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Trane UNT-SVX07A-EN User's Manual

1. 4 UNIT LEVELING DEVICES 10 15 16 31 16 CONTROL WIRING OPTIONAL BOTTOM ONLY mte hr TI 47 16 ae I 1 I 181 1 0 1 4 II TA og 1 0 1 2 T A r lol 1 11 1 1 UNIT CONTROL TOP TOP OUTLET QUADRIFUSER OR BAR GRILLE So _ 2 7 8 POWER WIRING 71 2 7 8 j 7 8 91316 BE PIPING gt Z G sm DIAKEYSLOT 1 lI CONTROL I SIDE BOX il pH VIEW 1 3 16 3 BOTTOM OF 27A AIRY VV CONTROL BOX FLOW e M Y 1 211 16 I n VAA VA 12 9 16 5 Z1 V4 You v7 d 31 4 4 E FILTERS 6746 1 1 1516 FRONT INLET BAR GRILLE 11 5 16 m 11 5 16 4 l 1 2 1 2 MAIN DRAIN CONNECTION FOR 7 8 OD COPPER FRONT VIEW TUBE AND CLAMP LH PIPING EE SECONDARY DRAIN CONNECTION FOR COIL CONNECTIONS 3 8 ID TUBE 7 ooo AUXILIARY u 7 CONTROL 4
2. Unit Size 02 03 04 06 08 10 12 TOP VIEW A 2 8 1 6 3 1 3 11 4 7 6 2 The 7 8 KO B 1 9 5 6 2 2 6 2 11 Bhe 3 8 he 5 3 hse 4 5 8 DIA KEYSLOT POWER WIRING T 10 he 2 3 Bhe 3 1 he 3 9 he 5 4 Phe ONLY 132 13 4 D 1 5 She 1 10 67 2 7 Bh 3 4 he 4 115 6 1 75he 2 0 Ae 2 9 Bhe 3 6 5 6 5 1 5 6 operating weight 81 109 13 147 200 Sg shippingweight 68 96 123 131 182 U ropouner Notes 34 2 __ DUCT COLLAR __ 5 1 connections are always on the drain pan side and opposite the control D 227 2 Coil connections 5 8 O D sweat See pages 21 22 for locations 3 All duct collar dimensions to the outside of collar 2 1 3 32 4 Seefresh airopening dimensions on pages 23 24 CONTROL WIRING 15 BOTTOM ONLY B 3 4 3 4 4 5 8 DIA KEYSLOT 1 3 4 134 HANGER HOLES 101 16 1 DUCT COLLAR FRONT VIEW 1 SIDE RH PIPING I VIEW 0 1 7 2 lt CONTROL 2 2 1 4 ipee BOX P Se mses ua 225 FON 1 3 1 2 M 1 28 yt SECONDARY DRAIN 4
3. Table I ER 3 Decimal to fractional HP kW unit 115 volt 208 230 volt 277 480 volt T size hp kw hp KW RA hp kW H M conversion 02 11 07 05 0 6 07 05 05 07 05 1480 1110 865 Decimal Fraction 03 14 08 06 07 08 06 06 08 06 1400 1175 860 2 03 1 30 04 16 10 07 08 10 07 07 10 07 1475 1315 1070 07 115 06 26 16 12 12 16 12 10 16 1 1400 1070 855 03 14 125 08 34 24 18 14 24 18 24 18 1475 1285 975 05 120 10 16 10 07 08 10 07 07 10 07 1475 1315 1070 08 112 26 16 12 12 16 12 10 16 1 1400 1070 85 04 05 120 12 16 10 07 05 10 07 07 10 12 1475 1315 1240 06 116 34 24 18 09 24 18 11 24 1 1475 1285 95 10 110 13 1 8 06 07 1 15 12 18 Table I ER 6 Free discharge motors on units with three and four row coils 16 16 unit 115 volt 208 230 volt 277 480 volt rpm 24 1 4 size hp W hpP W nhp kW H M L 08 12 18 02 06 03 02 03 0802 02 03 02 980 840 655 13 03 08 05 04 05 05 04 05 04 1080 80 60 24 14 04 10 06 07 06 06 04 05 06 1080 80 60 10 110 06 14 12 0 09 12 09 06 12 09 100 80 60 11 08 17 13 10 10 i3 10 08 13 10 1080 80 600 ae 18 14 10 10 06 04 06 06 04 05 06 04 1080 80 _ 600 D 88 15 170718 14 12 09 09 12 09 06 12 09 1080 80 60 116 18 12 10 06 04 06 06 04 05 06 04 1080 80 600 ad 4 110 14 17 13 1
4. 1K11 LEGEND DEVICE DESIGNATION DESCRIPTION 1513 SWITCH 49 151 DISCONNECT SW 4 171 TRANSFORMER 31 1781 MAIN POWER TERMINAL BLOCK 5 603 CUSTOMER SUPPLIED 5 28 102 DAUGHTERBOARD 27 1K4 ELECTRIC HEAT CONTACTOR 33 212 DAMPER ACTUATOR 41 311 MAIN COIL VALVE 36 1K11 CHANGEOVER RELAY 32 1K10 ELECTRIC HEAT INTERLOCK 37 3512 ELEC HEAT AUTO LOCKOUT SW 37 3513 CHANGEOVER THERMOSTAT 32 481 MOTOR 22 SHR1 2 HEATING ELEMENT 12 555 6 LIMIT SWITCH 12 J CONNECTOR PLUG CONNECTOR DEVICE PREFIX LOCATION CODE AREA LOCATION 1 CONTROL PANEL 2 CONTROL END 3 PIPING END 4 SECTION 5 COIL_SECTION 6 CUSTOMER INSTALLED 7 FIELD SUPPLIED DEVICE i enm i o6 c cundi uie d 520 ti SUNT dono 2774 60 1 peg WARNING Mon ac HAZARDOUS VOLTAGE 1 DISCONNECT ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS 4 BEFORE SERVICING SPLICE FAILURE TO DISCONNECT POWER BEFORE SERVICING CAUSE 1AA BLK SRN SEVERE PERSONAL INJURY OR DEATH 1781 1 1781 2 GROUND AN CAUTION 5 je de USE COPPER CONDUCTORS ONLY D UNIT TERMINALS ARE NOT DESIGNED 5 5 Bx 8
5. _ 251346 39 16 ame m 5 2 218 6 T il 8 1 4 CONTROL X rr 13 4 T 3 5 8 E l 4 T I 21516 2 1 3 32 TEASE CONTROL WIRING 27 16 FRONT VIEW 90 TO BACK INLET LH PIPING 11 8 FULLY OPEN LOUVERS COIL BOTTOM ACCESS PANEL ALL UNITS CONNECTIONS AUXILIARY DRAIN PAN UNT SVX07A EN 13 e TRANE Installation dimensions amp weights Horizontal Recessed Model E Horizontal Recessed Unit Dimensions in bs unit TOP VIEW 81316 E 81316 BACK INLET DUCT COLLAR size 02 03 04 06 08 10 12 112 A 2 11 Ae 3 4 Phe 4 2 he 4 10 She 6 5 Bhe r 3 4 B 1 9 5 6 2 2 he 2 11 Bhe 3 8 5 6 5 3 As 4 5 8 DIA BOTTOM INLET LOUVERS 121013 2 3 Bhe 3 1 fe 3 9 Bhe 5 4 Dg KEYSLOT T 1 7 2 035 2 07 3 635 5 1 2 4 HANGER HOLES J ee E 1 6 JW 2 8 35347 50167 2 X4 JUNCTION F 2 8 he 3 1 he 3 10 She 4 7 he 6 2 he BOX POWER WIRING CONNECTHONIFOR Ann BIS ELA SLE 8 7 8
6. 31 2 DUCT 7 8 KO SIDE COLLAR POWER WIRING 13 134 VIEW 1 BOTTOM ONLY 4 5 8 DIA KEYSLOT HANGER HOLES 1 1 39 16 X 3716 vD 8 1 4 55 16 L Ho e 222 241 1 4 L 1 OUTLET ced DUCT COLLAR OPTIONAL 3 8 ID TUBE 2 1 3 32 KO S ray ks D 1 101 16 CONTROL WIRING BOTTOM ONLY MAIN DRAIN CONNECTION FOR FRONT VIEW 3 4 B 3 4 7 8 OD COPPER Y RH PIPING TUBE AND CLAMP 134 1 3 4 19 16 FILTERS ewe 57he NENT L pese i Vertical Recessed Unit Dimensions in Ibs T unit 1 i FRONT OUTLET LOUVERS m ned 28 8 1 T nit PANEL A 2 8 3 1 3 11 306 4 7 Me 6 2 6 CONROE 14 2121 Ji 1 OPENING B 1 9 fe 2 2 hs 2 11 Bhe 3 8 he 5 3 5 6 NS C 10 BAe 2 3 Bhce 3 l5Ae 3 9 Bhe 5 4 Bhe i TO I 1 5 1 105 6 2 7 Bhe 3 4 he 4 11 5 6 Tu E 3 11 4 3 5 3 5 5 10 7 5 1 NGS Ser 2 6 2 6 2 6 2 91p 2 9 1p Oe G 23 23 23 4 2 187 H 3 6 4 0 4 9 5 3 7 3 814 bg 7 2 2 1 22 221 2 3 2 3 0 1 i operatingweight 78 88 128 139 253 ar at Se II shipping weight 68 78 18 129 243 FRONT INLET LOUVERS
7. Horizontal Concealed Unit Dimensions in lbs unit size 02 03 04 06 08 10 12 A 2 8 1 6 3 1 he 3 11 6 4 7 Mhe 6 2 1 6 B 1 9 5 6 2 2 he 2 11 Bhe 3 8 he 5 3 he C 1 10 5 6 2 3 Bhe 3 154 3 0 Bhe 5 4 Bfe D 1 735 2 035 2 9 74 3 63 5 13 E 1 6 Ye 1 11 2 85 amp 3 5 Ye 5 0 1 7 546 2 0 56 2 9 Bho 3 6 5 6 5 1 She operatingweight 81 109 139 147 200 shippingweight 68 96 123 131 182 Notes 1 Coil connections are always on the drain pan side and opposite the control box 2 Coil connections O D sweat See pages 21 22 for locations 3 All duct collar dimensions are to the outside of the collar 4 See pages 23 24 for fresh air opening dimensions UNT SVXO7A EN e TRANE dimensions Installation amp weights Horizontal Cabinet Model D Horizontal Cabinet Unit Dimensions in Ibs TOP VIEW lt 3 i E 8 unit BACK INLET DUCT COLLAR size 02 03 04 06 08 10 12 J 2 9 She 3 2 he 3 113 6 4 8 5 6 6 3 5 6 BACK AND BOTTOM 4 5 8 DIA KEYSLOT B 1 9 5h 2 25 6 2 11 Bhe 3 8 5 6 5 3 56 INLET LOUVERS HANGER HOLES C 7 587 TR 8767 71 7 5 D 1 6 5507 2 6 5707
8. 1 5 14 1 10 2 73 3 4 4 11 1 4 3 8 ID TUBE 3 5 he 32105467 4 7 he 5 4 hs 611 She MAIN DRAIN G 8 5 8 18 9787 81 8 5 CONNECTION FOR 7 7 7 A A 7 7 8 H 1 1 10 2 3 A 4 10 5 TUBE AND CLAMP J 1 7 3 4 1 11 2 73 3 33 4 11 3 4 2 X 4 JUNCTION BOX POWER WIRING operatingweight 97 15 155 164 218 8 7 8 KO S shippingweight 84 12 139 148 200 OPTIONAL Notes HeoNIROR proce cg eg ay co 1 Coil connections are always on the drain pan side and opposite the control box 2 Coil connections 5 O D sweat See pages 21 22 for locations 3 4 3 All duct collar dimensions to the outside of the collar 4 See pages 23 24 for fresh air opening dimensions 3 4 o FRONT OUTLET 3 3 4 DUCT COLLAR OPTIONAL m G 2 1 H 2 1 B 6 i FRONT VIEW UNIT CONTROL 4 5 8 DIA KEYSLOT RH PIPING 2 HANGER HOLES 77 1 1 2 1 4 BOTTOM INLET 87 8 LOUVERS 75 16 1 DUCT 22 1 COLLAR see 1 FRONT OUTLET H QUADRIFUSER OR BAR GRILLE SIDE VIEW I 13 4 a D INLET AND OUTLET du OPTIONS 8 Lg i 7 i FR F OPTIONAL EXTENDED END POCKET L7 j me POWER DUCT COLLAR POWER WIRING 1 FRONT OUTLET BACK ONLY DUCT COLLAR
9. 35 41 498 518 BU Ik TA 657 GA 555 4558 UNIT CHASSIS ENO PROJECTION ae ms FINISHED WALL N FRONT VIEW REAR VIEW ISO 5 27 e TRANE WARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury Receiving and Handling Upon delivery inspect all components for possible shipping damage See the Receiving Checklist section for detailed instructions Trane recommends leaving units and accessories in their shipping packages skids for protection and ease of handling until installation Shipping Package UniTrane fan coil and Force Flo cabinet heaters ship in individual cartons for handling and storage ease Each carton has tagging information such as the model number sales order number serial number unit size pip
10. i 2 1 pg Ip I OG y me Y a eee 21 83 16 i ete M T FRONT INLET X 51 16 1 OPEN OR BAR GRILLE 1 1 kel 1 47 165 1 6 SECONDARY DRAIN I 10 16 3 8 ID TUBE D STs MAIN DRAIN ORG doi CONNECTION FOR 1 8 7 8 OD COPPER TUBE AND CLAMP F OPTIONAL EXTENDED END POCKET FRONT VIEW LH PIPING COIL CONNECTIONS y Vertical Cabinet Unit Dimensions in lbs unit E 1 size 02 03 04 06 08 10 12 DRAIN A 2 9 5 3 2 he 3 1136 4 8 5 6 6 3 5 6 I 11 8 CONTROL B 1 9 he 252 s 2211267 3 8 he 5 3 hs 4i Box C 75 T4 877 TR T 1 NX mpqtsemeleevtecIeseeee Ti D 1 6 2 2 g 3 6 57 07 1 7 546 2 0 2 9 Bhe 3 6 506 5 1 5 6 amp 1 3 5 5he 3 105he 4 7 346 5 4 5 6 6 11 5 6 operating weight 97 125 155 164 218 cee ee shipping weight 84 12 139 148 200 oo Notes 2 X 4 JUNCTION BOX POWER WIRING 8 7 8 KO S OPTIONAL 1 Coil connections are always on the drain pan side and opposite the control box 2 Coil connections are 5 sweat See pages 21 22 for locations 3 All duct collar dimensions are to the outside of the collar 4 See pages 23 24 for fresh air opening dimensions 11 e TRANE Installation dimensions amp weights Horizontal Co
11. 1 Notes L 6716 1 Coil connections always on the drain pan side and opposite the control 4 5 8 DIAKEYSLOT A HANGER HOLES 2 Coil connections are 6 sweat See pages 21 22 for locations 3 All duct collar dimensions are to the outside of the collar i PnHWALL OPENING 4 See pages 23 24 for fresh air opening dimensions 5 Dimension G refers to the required minimum distance between the finished eke floor and the bottom of the unit FRONT VIEW COIL CONNECTIONS 7 j 41516 LH PIPING es 22223 1 1 1 is i AUXILIARY 44 I 1 1 4 15 16 DRAIN PAN Ay CONTROL Ji n i 1 1 1 art Fg E 1 1 3 3 8 FRONT it CONTROL i EI ACCESS bg OPTIONAL i nol bad 2 4 ecc eI 2 X 4 JUNCTION BOX 17 41 WALL OPENING POWER WIRING 8 7 8 KO S 16 UNT SVXO7A EN e TRANE dimensions Installation amp weights Vertical Slope Top Model J 4 5 8 DIA KEYSLOT TOP VIEW HANGER HOLES 7 8 KO 658 6
12. 1 DUCT COLLAR 118 1 DUCT COLLAR se COIL CONNECTIONS H 6 1 8 e AUXILIARY ICONTROL DRAIN PAN BOX non LH PIPING FULL OPEN 118 quee ACCESS PANEL ALL UNITS rag BACK INLET DUCT COLLAR UNT SVX07A EN 14 e TRANE dimensions Installation amp weights Vertical Wall Hung Cabinet Model F TOP VIEW 4 5 8 DIA KEYSLOT 3916 POWER WIRING HANGER HOLES 22 BOTTOM ONLY 39 16 el 8 1 4 1 ol TOP OUTLET QUADRIFUSER 4 CONTROL OR BAR GRILLE 215 16 2 1 3 32 KO S D ud CONTROL WIRING 27 16 BOTTOM ONLY 6 B 6 lt 7 7 FRONT VIEW 4 5 8 DIA KEYSLOT SIDE TEHE RH PIPING HANGER HOLES VIEW 58 5 1 I F d d 11 FRONT OUTLET LOUVERS mi lt OPTIONAL n Z MIR CONTROL E v BOR 2220022 s 1 ili aot SSS I 2 2 13 16 pie V E 10 i 11 ex ul E pog Mode TOGO 17 pad FRONT INLET LOUVERS EU YS 2d H o qd 8 E a s 9 13 16 rg 8 9 16 E 171 I BOTTOM AND FRONT INLET AND OUTLET LOUVERS F 114 4 4 a BOTTOM INLET LOUVERS FRONT VIEW LH P
13. UniTrane Fan Coil amp Force Air Conditioners 200 to 1 200 cfm Models FC amp FF ZO and later design sequence Low vertical models FCKB amp FCLB SO and later design sequence April 2005 U NT SVXO7A EN e TRANE About This Manual Literature Change History Use this manual for UniTrane fan coils and Force Flo cabinet heaters This is the seventh revision of this manual It provides specific installation operation and maintenance instructions for 20 and later design sequences for all models except low vertical which are SO and later design sequences For previous design sequence information contact your local Trane representative Wamings and Cautions Warnings and cautions appear at appropriate sections throughout this manual Read these carefully WARNING Indicates a potentially hazardous situation which could result in death or serious injury if not avoided CAUTION Indicates a potentially hazardous situation which may result minor or moderate injury if not avoided Also it may alert against unsafe practices CAUTION Indicates a situation that may result in equipment or property damage only accidents 2005 American Standard Inc WARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow prope
14. Unit configuration The controller must be properly configured based on the actual installed end devices and application When the unit configuration does not match the actualend device the damper may not work correctly No power to the controller If the controller does not have power the fresh air damper does not operate For the controller to operate normally a 24 VAC input voltage must be applied When the green LED is off continuously the controller does not have sufficient power or has failed Unit wiring The wiring between the controller outputs and the fresh air damper must be present and correct for normal damper operation Refer to the typical unit wiringdiagrams in the Appendix of this manual UNT SVXO7A EN 63 1 gt 1 1 1 1 Resistance Dn mar BN Maintenance troubleshooting rn TD m H n Tempe she Deges F Figure M T 1 Resistance temperature curve for the zone sensor entering water temperature sensor and discharge air sensor Thermisitor 10 at 77 F LED indicates interface to power Note HAZARDOUS voltage in dashed area of board Figure 2 Relay board detail Troubleshooting the Relay Board The relay board serves as a common interface to all of the standard end devices and has an LED that indicates power to the board Factory switches are pre set and locked in place with lock
15. 28 30 32 33 35 36 7 38 39 40 42 43 45 48 47 49 50 51 52 53 5 55 56 57 58 Maintenance pical wiring diagram 480V 60 3 feu rot EE SPUCE 1 1 SPLICE iH GRN A n 4 235 ATTACH 1781 o9 9 9 GROUND B 81 2 5 we Jus ws ws wa 555 K4 liio _ SHR2 556 1K5 op 4 diee D 5 557 185 28 101 102 17 8 Moins hrv r lt r 171 J qd 7 2 L1 A 2 4 312 2044 J12 k 12 185 J6 7 J6 8 46 9 46 1 6 12 8 LEGEND DEVICE DESIGNATION DESCRIPTION 111 TRANSFORMER 31 1781 MAIN POWER TERMINAL BLOCK 5 101 MAIN BOARD 26 102 DAUGHTERBOARD 27 159 2 5 45 1 4 5 ELECTRIC HEAT CONTACTOR 33 212 DAMPER ACTUATOR 41 511 MAIN COIL VALVE 36 4RT4 OUTSIDE AIR SENSOR 45 AUTO CHANGE TEMP SENSOR 39 358 CONDENSATE OVERFLOW SW 40 3512 HEAT AUTO LOCKOUT SW 37 481 FAN MOTOR 22 482 MOTOR 22 SHR1 3 HEATING ELEMENT 12 555 7 SWITCH 12 692 ZONE SENSOR MO
16. All models except vertical cabinets Remove the front panel of the vertical recessed unit and open the bottom panel door of the horizontal cabinet and horizontal recessed unit to access the filter The front panel ofthe vertical cabinet unit does not require removal to change the filter Note Vertical recessed horizontal cabinet amp horizontal recessed units with a bottom return have filter guides to secure the filter in position Also if these unittypes have a fresh air opening they require an additional filter for the fresh air opening CAUTION Replace all panels and filters properly All unit panels and filters mustbe in place prior to unit startup Failure to have panels and filters in place may result in equipment damage Inspecting and Cleaning Drain Pans Clean the fan coil units main and auxiliary drain pans to ensure the unit drains condensate properly Check the condensate drain pan and drain line to assure the condensate drains properly at least every six months as dictated by operating experience If evidence of standing water or conden sate overflow exists immediately identify and remedy the cause Clean the drain pans of any moisture or debris Auxiliary Drain Pan 1 To remove the auxiliary drain pan loosen the hose clamp installer supplied around the drain connection collar and disconnect the drain line 2 Remove the overflow drain line to the auxiliary drain pan if it was instal
17. Ed 2320 S Si H 75 7 18 876 TW 7 5 8 1 6 2507 2 6 3 6 57 07 Wo FILTERS E E 1 7 2 0 6 2 9 Bhe 3 6 5 1 5he 3 5 5 6 3 10 34e 4 7 Phe 5 4 5 6 6 11 5 6 0 OBO operatingweight 97 125 155 164 218 puc S idis ecce d shipping weight 84 12 139 148 200 p Tg Notes 1 Li E 1 bg 1 Coil connections are always on the drain pan side and opposite the control box L Eos L J 2 Coil connections are 5 s O D sweat See pages 21 22 for locations 3 All duct collar dimensions are to the outside of the collar 2 X 4 JUNCTION BOX 4 See pages 23 24 for fresh air opening dimensions POWER WIRING 8 7 8 KO S UNT SVX07A EN OPTIONAL s e TRANE Installation dimensions amp weights Low Vertical Concealed Model K 2 5 8 DIA KEYSLOT HANGER HOLES TOP VIEW 2 7 8 KO POWER WIRING BOTTOM ONLY 2 3 8 L q Easy 6 1 4 1 0 1 4 1 0 1 2 TOP OUTLET DUCT COLLAR id T 29 16 33 8 FT 7 I 95 16 2 1 3 32 KO S CONTROL WIRING BOTTOM ONLY B 7 8 FRONT VIEW 2 5 8 DIA KEYSLO
18. t j J 5 5 5 sO WHT H Line Voltage FSS 410 2 H kA SPLICE IGRN ATTACH GROUND WARNING HAZARDOUS VOLTAGE DISCONNECT ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING FAILURE TO DISCONNECT POWER BEFORE SERVICING CAN CAUSE SEVERE PERSONAL INJURY OR DEATH N CAUTION USE COPPER CONDUCTORS ONLY UNIT TERMINALS ARE NOT DESIGNED TO ACCEPT OTHER TYPES OF CONDUCTORS FAILURE TO DO SO MAY CAUSE DAMAGE TO THE EQUIPMENT NOTES LEGEND DEVICE DESIGNATION DESCRIPTION 1513 SWITCH 41 TRANSFORMER 39 1781 MAIN POWER TERMINAL BLOCK 5 212 DAMPER ACTUATOR 46 202 FAN SWITCH 39 4B1 FAN MOTOR 22 482 MOTOR 22 2 PLUG CONNECTOR DEVICE PREFIX LOCATION CODE AREA LOCATION 1 PANEL 2 CONTROL END 3 PIPING END 4 FAN SECTION 5 COIL SECTION 6 CUSTOMER INSTALLED 7 SUPPLIED DEVICE UNLESS OTHERWISE NOTED ALL SWITCHES ARE SHOWN AT 25 C 77 F AT ATMOSPHERIC PRESSURE 50 RELATIVE HUMIDITY WITH ALL UTILITIES TURNED OFF AND AFTER A NORMAL SHUTDOWN HAS OCCURRED DASHED LINES INDICATE RECOMMENDED FIELD WIRING BY OTHERS DASHED LINE ENCLOSURES AND OR DASHED DEVICE OUTLINES INDICATE COMPONENTS PROVIDE
19. 5 3 8 ID TUBE G 2 10 6 3 3 he 4 0 Bhe 4 9 he 6 4 She OPTIONAL 2 5 7 8 H 1 7 9 4 1 113 2573 3 3 3 4113 ight 78 88 128 139 253 CONNECTION FOR operating weig 7 8 OD COPPER shippingweight 68 78 118 129 243 TUBE CLAMP 2 4 3 8 CEILING Notes 1 OPENING 1 Coil connections are always on the drain pan side and opposite the control 131 2 1 CONTROL box BOX 2 2 7 8 2 Coil connections are 5 O D sweat See pages 21 22 for locations I BOTTOM 3 duct collar dimensions are to the outside of the collar 4 See pages 23 24 for fresh air opening dimensions 1 3 5 16 5516 o I i 1 1 184 14 2 I rm 8 Le aia Mos 411 16 F ACCESS PANEL Uo 111 16 8 1 CEILING OPENING e 3 4 SIDE VIEW INLET OPTIONS A 7 8 KO POWER WIRING 101 2 12 1 2 BACK ONLY 111 16 11146 BACK INLET 3 1 2 4 5 8 DIA KEYSLOT 11 1 2 12 3 4 HANGER HOLES BOTTOM INLET S 27 16 Y gt 8 7 8 FRONT OUTLET 313 16 81 4 CONTROL DUCT COLLAR m 55 16 BOX TANS BOTTOM INLET p LOUVERS 2 1 3 32 KO S gt 316 CONTROL WIRING BACK DUCT COLLAR BACK ONLY EDUC UO D 33 16 2 2 3 16 BOTTOM INLET LOUVERS FRONT VIEW 1 7 16 1716 RH PIPING j 2316
20. CONDUCTORS FAILURE TO DO SO MAY CAUSE DAMAGE THE EQUIPMENT 10 SHRI 555 10 1K4 AKAM _ SHR2 556 13 14 15 1 16 7 18 19 20 STANDARD 277 ISOLATION REVERSIBLE CW u 22 23 24 l 26 27 14 w 195 FF f f 5141 a gl n Ss 2 S S 5 24V 12 5 30 44 7 8 B 97 1 3 GND J2 2 Lot hop 3 7000 244 42 1 ed IGH mm PN m 47 3 24v Y HIGH VOLTAGE SECTION fes enc 24V 47 4 24V B 2 33 Sing ae tet 249 1 4 5 piad 12 2 511 1K10 Sw2 35 I 6 7 24 Bux BLK 5 46 8 OpV1 583 36 51 46 11 24 8 584 sp 46 12 38 39 40 222 Low Fan Spd Sw iM 1P2 1 eds 3 1 2495 5 a ai WHT PLG amp CAP 38822245 011 3 8 43 IITIT 804404 449944 4 45 46 if Tstot has Fan 47 Output Disconnect wire XXX from back of Soeed 48 49 50 NOTES UNT SVXO7A EN Disconnect brown 1 wire from back of fan speed 1 switch if Tstat damper output is used 1 1 5 1 UNLESS OTHERWISE NOTED ALL SWITCHES ARE SHOWN AT 25 C 77 F AT ATMOSPHERIC PRESSURE AT 50 RELATIVE HUMIDITY WITH ALL UTILITIES TURNED OFF AND AFTER A NORMAL SHUTDOWN HAS OCCURRED 2 DASHED LINES INDIC WIR
21. 20 UNT SVXO7A EN Inverted Vertical Recessed Installation e TRANE dimensions amp weights Model N Inverted vertical recessed unit dimensions amp weights in Ibs c unit TOP VIEW TERT i3 2 02 03 04 06 08 10 12 2 3 fe 2 8 fs 3 6 4 2 fg 5 9 fe 31 2 4 5 8 DIA KEYSLOT HOLES B 1 9 56 2 2 96 2 11 Bhe 3 8 fe 5 3 She C 1 10 Ae 2 3 Bhe 3 1 6 3 9 Bhe 5 4 Bhe 8 916 D 2 2 236 4 18 4 Ya 3 11 4 3 5 3 5 5 ip 7 5 1 81 4 F 2 67 2 6 2 6 2 9 ip 2 9 G 2 2 1p 2 2 1 2 2 1p 2 3 1p 2 3 3 6 4 07 4 9 57 37 77 37 aie operating weight 78 88 128 139 253 sux POWER WIRING shipping weight 68 78 118 129 243 2 1 1 32 KO S Notes CONTROL WIRING 1 Coil connections are always on the side opposite the control box 2 Coil connections 5 O D sweat See pages 21 22 for locations 3 All duct collar dimensions areto the outside of the collar FRONT VIEW 3 4 rs B j pec 3 4 4 See pages 23 24 for fresh a
22. AS GENERIC 22 3 1 eP edu 2409 BN 52 5 WHT PLG amp 3 011 3 J2 1p S3F 459 BI 1 P UNLESS OTHERWISE NOTED ALL SWITCHES ARE FRZ STAT SHOWN 25 C 77 F AT ATMOSPHERIC PRESSURE AT 50 RELATIVE HUMIDITY WITH ALL UTILITIES TURNED OFF AND AFTER A NORMAL SHUTDOWN HAS OCCURRED DASHED LINES INDICATE RECOMMENDED FIELD WIRING BY OTHERS DASHED LINE ENCLOSURES AND OR DASHED DEVICE OUTLINES INDICATE 49 COMPONENTS PROVIDED BY THE FIELD SOLID LINES INDICATE WIRING BY TRANE CO lt 5 NUMBERS ALONG THE RIGHT SIDE OF THE SCHEMATIC DESIGNATE THE LOCATION lt CONTACTS BY LINE NUMBER ALL FIELD WIRING MUST BE IN ACCORDANCE WITH THE NATIONAL ELECTRIC CODE NEC STATE AND LOCAL REQUIREMENTS ALL FIELD WIRING MUST HAVE AN INSULATION VOLTAGE RATING THAT EQUALS OR EXCEEDS UNIT RATED VOLTAGE UNT SVXO7A EN 10175 GENERIC BINARY OUTPUT IS RATED 24VAC 12VA PILOT DUTY COMMUNICATION WIRE MUST BE TRANE PART NO 400 20 28 OR WINDY CITY OR CONNECT AIR LEVEL 4 CABLE MAXIMUM OF 4500 FOOT AGGREGATE RUN CAUTION DO NOT RUN POWER IN THE SAME CONDUIT OR WIRE BUNDLE WITH COMMUNICATION LINK FOR ADDITIONAL INFORMATION REFER TO 68 75 ZN520 with 2 stage electric heat 76 10 12 13 14 15 16 7 18 19 20 21 2 23 24 25 26 27 28
23. and 24 Operation e TRANE Table O SO 8 Local fan switch enabled Communicated Fan switch local Fan operation fan speed input off Ignored off Low Ignored Low Medium Ignored Medium High Ignored High Auto Low Medium High Auto Off Low Medium High Auto configured default determined by heat cool mode Table O SO 9 Fan operation in heating and cooling modes Heating Cooling Fanmode Occ Unocc off off off off off Low low off high low off high Medium med off high med off high High high off high high off high Auto default off high default fan sp fan sp Table 5 10 Local fan switch disabled or Table O SO 7 Fan configuration not present auto fan fan speed Communicated fan speed input __ operation operation default Off Of Heating continuous m medium Medium Medium high High High oe m Auto or not present Auto fan runs at medium the default speed high Table O SO 1L Relationship between outdoor temperature sensors and damper position Continuous Fan Operation During occupied and occupied standby modes the fan normally is on For multiple speed fan applications the fan normally operates at the selected or default speed off high medium or low When fan mode is auto the fan operates atthe default fan speed During unocc
24. 1 Qe SHOWN AT 25 77 AT ATMOSPHERIC 2 PRESSURE AT 50 RELATIVE HUMIDITY WITH PEN WHT PLG amp CAP 3 ALL UTILITIES TURNED OFF AND AFTER A _____ ___ 7 3 ___ 4 11 3 NORMAL SHUTDOWN HAS OCCURRED 2 DASHED LINES INDICATE RECOMMENDED FIELD WIRING BY OTHERS DASHED LINE ENCLOSURES AND OR DASHED DEVICE OUTLINES INDICATE COMPONENTS PROVIDED BY THE FIELD 45 SOLID LINES INDICATE WIRING BY TRANE CO 3 NUMBERS ALONG THE RIGHT SIDE OF THE 46 SCHEMATIC DESIGNATE THE LOCATION OF CONTACTS BY LINE NUMBER 4 ALL FIELD WIRING MUST BE IN ACCORDANCE 72 WITH THE NATIONAL ELECTRIC CODE NEC STATE AND LOCAL REQUIREMENTS ALL FIELD WIRING MUST HAVE AN INSULATION VOLTAGE RATING THAT EQUALS OR EXCEEDS UNIT RATED VOLTAGE POWER AVAILABLE FOR FIELD SUPPLIED CONTROLLER IS 24VAC 40VA OUTPUTS MUST BE RATED AT 10VA OR BETTER UNT SVXO7A EN 22 23 24 25 26 2 28 28 30 32 33 34 35 36 7 47 1 12 Maintenance e pical wiring diagram 115 60 1 1AA BLK B D AK B G 17 2 L1 39 Tm i 32 3 24 Y lt J2 4 24 B 405 24V 42 43 44 Low Voltage 2 Pos Damper 45 212 46 WHT PLG amp CAP 47 UNT SVXO7A EN STANDARD SECOND MOTOR 23 3 8 5
25. 2 sr 8 N C N C 4 low COM 34 Sw2 1 FAN SW BLK BLK 2 5 TM 2 4 8 OpenDP OpenDP COMM d is ac L open 2 3 pem 203 2 7 2 6 5 8 2 2 E swa Ew COM 7 38 1 1 2 1 46 1 12 5 M 46 3 Bin In OR FIELD 71 4 1 BI 3 occ uNocc LO es 16 4 ANLG LINK 4_2 1 EWT GENER 22 J3 1 eP 11 1 240 9 BIN LINK 3 2 BI 2 COND WHT PLG amp CAP 3 011 3 UNLESS OTHERWISE NOTED ALL SWITCHES ARE 2c 1b SSE 4159 SHOWN 25 77 ATMOSPHERIC BI 1 5 PRESSURE 50 RELATIVE HUMIDITY WITH FRZ STAT UTILITIES TURNED OFF AND AFTER 2 2 NORMAL SHUTDOWN HAS OCCURRED DASHED LINES INDICATE RECOMMENDED FIELD WING BY OTHERS DASHED LINE ENCLOSURES AND OR DASHED DEVICE OUTLINES INDICATE COMPONENTS PROVIDED BY THE FIELD TOT GENERIC BINARY OUTPUT 18 RATED 2446 SOLID LINES INDICATE WIRING BY TRANE CO NUMBERS ALONG THE RIGHT SIDE THE SCHEMATIC DESIGNATE THE LOCATION OF CONTACTS BY LINE NUMBER ALL FIELD WIRING MUST BE IN ACCORDANCE WITH THE NATIONAL ELECTRIC CODE STATE LOCAL REQUIREMENTS ALL FIELD WIRING MUST HAVE INSULATION VOLTAGE RATING THAT EQUALS OR EXCEEDS UNIT RATED VOLTAGE lt COMMUNICATION WIRE MUST BE TRANE PART NO 400 20 28 OR WINDY CITY O
26. 2 position NO 28 psig C 2 way 2 position NC 30 psig D 3 way 2 position NC 20 psig 2 way 2 position NO 50 psig F 3 way 2 position NO 28 psig G 2 way 2 position NC 50 psig H 3 way 2 position NC 28 psig e TRANE J 2 way modulating 0 7 Cv 50 psig K 3 way modulating 0 7 Cv 50 psig 2 way modulating 1 1 Cv 60 psig M 3 way modulating 1 1 Cv 60 psig N 2 way modulating 2 3 Cv 60 psig P 3 way modulating 2 7 Cv 60 psig 2 way modulating 3 3 Cv 60 psig R 3 way modulating 3 8 Cv 60 psig X field supplied NO Y field supplied NC Z field supplied 3 wire modulating Digit 28 auxiliary control valve 0 2 way 2 position 30 psig 3 way 2 position NC 28 psig 2 2 position NC 30 psig D 3 way 2 position NC 20 psig E 2 way 2 position NO 50 psig F 3 way 2 position NO 28 psig G 2 way 2 position NC 50 psig H 3 way 2 position NC 28 psig J 2 way modulating 0 6 Cv 60 psig K 3 way modulating 0 6 Cv 60 psig 2 way modulating 1 1 Cv 60 psig M 3 way modulating 1 1 Cv 60 psig N 2 way modulating 2 3 Cv 60 psig P 3 way modulating 2 7 Cv 60 psig Q 2 way modulating 3 3 Cv 60 psig R 3 way modulating 3 8 Cv 60 psig X field supplied NO Y field supplied NC Z field supplied 3 wire modulating A basic ball valve S amp R B basic ball valve S man crkt
27. 60 70 80 208 23 30 38 45 53 60 12 115 30 230 30 40 50 60 70 80 100 277 30 40 50 60 70 80 100 208 23 30 38 45 53 60 Table 9 Electric heat kW low vertical fan coils unit size unit voltage kW kW kW kW 03 115 10 15 2 0 04 115 10 15 2 0 25 06 15 10 15 2 0 25 Low vertical units are only available with electric heat in combination with the two row cooling coil Minimum Circuit Ampacity MCA and Maximum Fuse Size MFS Calculations for Fan Coils with Single Phase Electric Heat Heater amps heater kW x 1000 heater voltage Note Use 120V heater voltage for 115V units Use 240V heater voltage for 230V units MCA 1 25 x heater amps all motor FLAs MFS or HACR type circuit breaker 2 25 x largest motor FLA second motor FLA heater amps if applicable HACR heating air conditioning and refrigeration type circuit breakers are required in the branch circuit wiring for all fan coils with electric heat Select a standard fuse size or HACR type circuit breaker equal to the MCA Use the next larger standard size if the MCA does not equal a standard size Standard fuse sizes are 15 20 25 30 35 40 45 50 60 amps Fan coil electric heat MBh heater kW 3 413 UNT SVXO7A EN Installation e TRANE Table I ER 10 Force Flo single stage max kW electric heat unit heater heater size volts hz phase wires kW amps ph 208 1 2 2 25 10 9 240 1 2 3 0 12 5 02 277 60 1 2 3 0 10 9 208 3 3 2 25 6
28. Automatic or manual air vent vacuum breaker if desired steam supply condensate return Figure MR 11 Main steam coil connection diagram 35 e TRANE Unit Wiring Diagrams Specific unit wiring diagrams are provided inside each unit and can be easily removed for reference Use these diagrams for connections or trouble analysis Wiring diagrams are attached on the inside of the front panel of vertical cabinet amp recessed models and on the fan and motor panel of vertical concealed amp all horizontal models Supply Power Wiring WARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failureto disconnect power and discharge capacitors before servicing could result in death or serious injury Refer to the unit nameplate to obtain the minimum circuit ampacity MCA and maximum fuse size MFS or maximum circuit breaker M CB to properly size field supply wiring and fuses or circuit breakers Ref
29. a variety of factory mounted piping packages Units with the three speed fan switch only are available with the switch mounted on the unit or shipped sepa rately to mounted in the occupied space The unit mounted three speed Factory installed and tested controls Removable noncorrosive positively sloped drain pan that s easy to clean Easy to remove fan assembly 16 gage steel construction Switch option can be ordered with a low voltage 24 volts AC transformer and three fan speed relays The ship seperate three speed switch option only comes with a low voltage 24 volt AC trans former and three fan speed relays The Tracer 21010 ZN510 and ZN520 controllers are included inside the units control box assembly These controllers utilize analog signals from a unit mounted control device or from a control device mounted in the occupied space The controls interface option includes a 24 volt AC transformer and an interface terminal board Controls provided by an external source can be tied into the interface terminal board utilizing 2 4 female spade connectors Smaller unit footprint Two three or four row coils Quiet operation cell insulation non Model Number Each UniTrane fan coil and Force Flo cabinet heater has a multiple character model number unique to that particular unit To determine a units specific options reference the model number on the unit nameplate on the fan scroll Th
30. and the discharge air temperature sensor are 10 thermistors Figure 26 provides the resistance temperature curve for these thermistors 2 Zone sensor Wall mounted sensors include a thermistor soldered to the sensor s circuit board Unit mounted sensors include a return air sensor in the 5 return air stream 3 Changeover units include an entering water temperature sensor Table O SO 5 Fan mode operation heating mode cooling mode fan mode occupied unoccupied occupied unoccupied off off off off off low low off high 3 low off high 3 medium medium off high 3 medium off high 3 high high off high 3 high off high 3 auto continuous heat default off high 3 cool default off high 3 cycling off heat default 3 off cool default off high 3 Notes 1 During the transition from off to any fan speed but high Tracer 21010 and ZN510 automatically starts the fan on high speed and runs for three seconds before transitioning to the selected speed if it is other than high This provides enough torque to start all fan motors from the off position 2 When the heating output is controlled off Tracer 2 010 and ZN510 automatically controls the fan on for an additional 30 seconds This delay allows the fan to dissipate any residual heat from the heating source such as electric heat 3 Whenever two states are listed for the fan The first state off applies when there is not a call for h
31. controller setpoints can be found in the previous Setpoint operation section Unoccupied Mode When the controller is in the unoccupied mode the controller attempts to maintain the space temperature at the stored unoccupied heating or cooling setpoint based on the measured space temperature the active setpoint and the control algorithm regardless of the presence of a hardwired or communicated setpoint Similar to other configuration properties of the controller the locally stored unoccupied setpoints can be modified using Rover service tool In unoccupied mode a simplified zone control algorithm is run During the cooling mode when the space tempera ture is above the cool setpoint the primary cooling capacity operates at 100 If more capacity is needed the supplementary cooling capacity turns on or opens to 100 During the heating mode when the space temperature is below the heat setpoint the primary heating capacity tums on All capacity is turned off when the space temperature is between the unoccupied cooling and heating setpoints Note that primary UNT SVXO7A EN Operation heating or cooling capacity is defined by unittype and whether heating or cooling is enabled or disabled For example if the economizer is enabled and possible it will be the primary cooling capacity If hydronic heating is possible it will be the primary heating capacity Occupied Standby Mode The controller can be placed
32. heat and cool to the controller When off is communicated to the controller the unitcontrols the fan to off The unit is not capable of heating or cooling when the controller is in this mode Diagnostic present A specific list of diagnostics effects fan operation For more information see the Diagnostics section No power to the controller If the controller does not have power the unit fan will not operate For the controller controller to operate normally it must have an input voltage of 24 VAC Whenthe green LED is off continuously the controller does not have sufficient power or the controller has failed Manual output test The controller includes a manual output test sequence to verify binary output operation and the associated wiring However based on the current step in the test sequence the unit fan may not be powered on Refer to the Manual Output Test section Unit wiring The wiring between the controller outputs and the fan relays and contacts must be present and correct for normal fan operation Refer to the typical unit wiringdiagrams in the Appendix of this manual Table M D 4 Valves Stay Closed Probable Cause Explanation Normal operation The controller opens and closes the valves to meet the unit capacity requirements Requested mode off It is possible to communicate the operating mode such as off heat and cool to the controller When off is comm
33. hydronic system Note The manual output test is not an automatic cycle You must press the TEST button to proceed through each step The controller observes all diagnostics that occur during the test sequence Although an automatic diagnostic reset sequence exists as part of the controller s normal operation the automatic diagnos tic reset feature is not active during the test sequence If leftin an individual test step the controller remains in test mode for 60 minutes and then exits to normal operation Many service calls are due to unit diagnostics The test sequence resets unit diagnostics and attempts to restore normal unit operation prior to testing the outputs If the diagnostics remain after a reset the STATUS LED indicates the diagnostic condition is still present two blinks Manual Output Test Procedure Follow the procedure below to test the Tracer 21010 ZN510 and 24520 controllers 1 Press and hold the TEST button for at least two seconds not exceeding 5 seconds and then release to start the test mode 2 Thetest sequence will turn off all outputs and then attempt to clear all diagnostics 3 Press the TEST button several more times no more than once per second to advance through the test sequence The outputs are not subject to minimum times during the test sequence However the test sequence only permits one step per second which limits minimum output time The green LED is turned of
34. input 4 Fan status Table O SO 13 Binary output configuration binary output configuration 111 fan high 11 2 fan medium 113 fan low 114 115 cool valve open 2 valve 11 6 cool valve close 1 19 heat valve open or 2 position valve 1 electric heat stage 1 1 10 heat valve close or 274 Electric heat stage 11 11 fresh air damper open 1 12 fresh air damper close 4 1 generic baseboard heat output TB42 24VAC Note For Tracer ZN520 units configured and applied 2 pipe hydronic heat cool changeover terminals J 1 5 1 6 are used to control the primary valve for both heating and cooling For Tracer ZN520 units configured and applied as 2 hydronic heat cool changeover with electric heat terminals J 1 5 andJ 1 6 are used to control the primary valve for both cooling and heating and terminals J 1 9 and J 1 10 are used only for the electric heat stage For those 2 pipe changeover units electric heat will not be energized while the hydronic supply is hot 5 or more above the space temperature UNT SVXO7A EN 57 e TRANE 58 Operation Table 50 14 Analog inputs description terminals function range zone TB31 space temperature input 5 to 122 F 15 to 50 C ground TB3 2 analog ground NA set TB33 setpoint input 40 to 115 F 4 4 to 46 1 C fan B34 fan switc
35. insulation on the interconnection wires back 0 25 inch and connectto 1 Screw down the terminal blocks 6 Replace the zone sensor cover and adjustment knob If installing a Tracer ZN510 or Tracer ZN520 zone sensor see the Tracer Summit Communication section for more information 416 X 3B 2X FRONT MEW UNT SVXO7A EN UNT SVXO7A EN Installation e TRANE Installation Checklist The following checklist is only abbreviated guide to the detailed installation procedures given in this manual Use this list to ensure all necessary procedures are complete For more detailed information refer to the appropriate sections in this manual WARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury 0 1 Inspect the unit for shipping damage 0 2 Level installation location to support the unit weight adequately Make all necessary wall or ceiling openings to allow adequate air flow and service clearances 3 Ensure the unit chassis is installed level CAUTION Unit Leveling The unit must be installed lev
36. normal diagnostic Nee 5 2 condensate overflow 1 normally closed normal diagnostic 5 BI3 occupancy normally open unoccupied occupied BI 3 generic binary input normally open normal 3 normale 4 fan status Not normally open normal diagnostic 4 Note During low temperature condensate overflow and fan status diagnostics the Tracer ZN520 control disables all normal unit operation of the fan valves and damper Nete2The occupancy binary input 5 for standalone unit controllers as an occupied unoccupied input However when the controller receives a communicated occupied unoccupied request the communicated request has priority over the hardwired input The generic binary input does not affect unit operation A building automation system reads this input as a generic binary input If the fan mode input is in the off position or the controller is in the unoccupied mode with the fan off the fan status input will be open A diagnostic will not be generated when the controller commands the fan off A diagnostic will only be generated if the fan status input does not close after one minute from energizing a fan output or any time the input is open for one minute The controller waits up to one minute after energizing a fan output to allow the differential pressure to build up across the fan Nete5 The table below shows the controller s response to low temperature detection condensate overflow and fan status diagnostics Binary
37. pan to the fanboard mounting screw gt Figure M MP 4 To remove the main drain pan on horizontal fan coil units peel the insulation from the edges of the pan s underside to access the mounting screws Maintenance maintenance procedures Coil Maintenance Keep coils clean to maintain maximum performance For operation at its highest efficiency clean the coil often during periods of high demand or when dirty conditions prevail Clean the coil a minimum of once a year to prevent dirt buildup in the coil fins where it may not be visible Remove large debris from the coils and straighten fins before cleaning Remove filters before cleaning Clean the coil fins using steam with detergent hot water spray and deter gent or a commercially available chemical coil cleaner Be sure to rinse coils thoroughly after cleaning WARNING Hazardous Chemicals Coil cleaning agents can be either acidic or highly alkaline Handle chemical carefully Proper handling should include goggles or face shield chemical resistant gloves boots apron or suit as required For personal safety refer to the cleaning agent manufacturer s Materials Safety Data Sheet and follow all recommended safe handling practices Failure to follow all safety instructions could result in death or serious injury Inspecting and Cleaning Coils Coils become externally fouled as a result of normal operation Dirt on the coil surface reduces i
38. panel C 2 5 projection panel D 3 projection panel E 23 5 projection panel F 24 projection panel G 4 5 projection panel H 5 projection panel J 5 5 projection panel K 6 projection panel 2 falseback M 3 falseback N 4 falseback P 5 falseback Q 6 falseback R 7 falseback 8 falseback Digit 40 autoflow 05 6 30 7 0 0 75 H 3 5 8 0 10 J 40 0 90 D 15 45 R 10 0 2 0 5 0 11 0 2 5 6 0 12 0 Digit 41 auxiliary autoflow gpm 0 5 2 5 L 5 0 0 75 3 0 6 0 10 3 5 N 7 0 15 40 80 20 45 Digit 42 subbase 0 none A 2 subbase D 5 subbase B 3 subbase 6 subbase 4 subbase F 7 subbase Digit 43 recessed flange 0 none recessed flange Digit 44 wall boxes 0 2 none A anodized wall box UNT SVXO7A EN Table 1 component data e TRANE Installation unit size 02 03 04 06 08 10 12 Coil Data Face Area Ft cm 0 8 743 0 8 743 1 1 1020 1 6 1490 2 1 1950 3 2 2970 3 2 2970 LxDxH In 2Row 15x1 7x8 15x1 7x8 20x1 7x8 29 5x1 7x8 38x1 7x8 57 17 8 57 17 8 38 4 20 38 4 20 51 4 20 75 4 20 97 4 20 145 4 20 145 4 20 3Row 15x2 6x8 15x2 6x8 20x2 6x8 29 5 2 6 8 38 2 6 8 57 2 6 8 57 2 6 8 38 7 20 38 7 20 51 7 2
39. r 47h6 HR r 43 8 HR P 43 8 HR HS ee HR 7 lt 27 lt gt x 2 1 11 3 8 2 a 1 2 He 25 Z2 WM A i pu 1101 nu VK 11 41 T2088 CNN n M 21 jl 1 35207 P d NS d Een v clo VERTICAL CONCEALED VERTICAL CABINET VERTICAL SLOPE VERTICAL WALL HUNG CABINET VERTICAL RECESSED RECESS PANEL NOT SHOWN Coil Connections Coil Connections Horizontal Units Inverted Units HORIZONTAL CONCEALED 1 HORIZONTAL RECESSED RECESS PANEL NOT SHOWN P 438 gargs HR HS HRS EE HS 2 Z 47 6 HS HR H 7 16 43 8 HR 1403 8 H8 1 1 2 I 5 5 16 HS 19 3 8 i INVERTED 7 rp E VERTICAL RECESSED 2 43 8 ia 7 ues 55 16 X 11 42 0 HS HRS 77 ON 1 o LLLA F gt 11 L 3 HS u LIN LN ow d 115 227 7 IN 2 HORIZONTAL CABINET HR Hot Water Return E HS Hot Water Supply E 3 13 16 2 13 16 HS HR UNT SVXO7A EN 23 e TRANE Inst
40. set C basic ball valve S amp R w auto crkt set D deluxe ball valve S amp R E deluxe ball valve S man crkt set R F deluxe ball valve S amp R w auto crkt set Digit 30 control type 0 fan speed switch E Tracer 24010 F Tracer 24510 Installation G Tracer ZN520 H CSTI Digit control option D unitmtd fan mode unit voltage K wall mtd fan mode V unit mtd fan sp w setpnt X unitmtd fan sp w wall mtd setpnt Y unit mtd fan sp amp wall mtd setpnt w comm Z unit mtd fan sp on cancel setpnt w comm 1 wall mtd on cancel w comm 2 wall mtd fan speed setpnt on cancel w comm 3 unit mtd fan speed switch low voltage 4 wall mtd digital zone sensor fan sp w setont on cancel comm 5 wall mtd digital zone sensor setpnt on cancel comm Digit 32 IAQ options 0 1 dehumidification 4 dehumidification w sensor Digit 33 cntrl function 1 0 w o exhaust fan damper or alarm Digit 34 cnt function 2 0 w o occupant call or IAQ status Digit 35 control function 8 0 1 occ unocc control 2 condensate overflow detection 3 occ unocc amp condensate overflow Digit 36 function 4 0 none 1 smoke input 2 low temperature detection 3 smoke input amp low limitsensor Digits 37 38 future cnt functions Digit 39 projection panel falseback 0 gt standard vertical recessed panel B 2 projection
41. the fan mode switch position When the fan mode switch is setto Off or when power is restored to the unit all Tracer ZN520 lockouts latching diagnos tics are manually reset The last diagnos tic to occur is retained until the unit power is disconnected Refer to Trane publica tion CNT SVXO4A EN Tracer ZN520 Installation Operation and Programming Guide for specific instructions regarding the procedure for running the Tracer ZN520 53 e TRANE Cooling Operation The heating and cooling setpoint high and low limits are always applied to the occupied and occupied standby setpoints During the cooling mode the Tracer ZN520 controller attempts to maintain the space temperature at the active cooling setpoint Based on the controller s occupancy mode the active cooling setpointis one of the following Occupied cooling setpoint Occupied standby cooling setpoint Unoccupied cooling setpoint The controller uses the measured space temperature the active cooling setpoint and discharge air temperature along with the control algorithm to determine the requested cooling capacity of the unit 0 100 The outputs are controlled based on the unit configuration and the required cooling capacity To maintain space temperature control the Tracer ZN520 cooling outputs modulating hydronic valve two position hydronic valve or outdoor air economizer damper are controlled based on the cooling capacity output The cooling output i
42. the trip point In addition the Tracer ZNO10 and 24510 control unit devices as listed below fan off valves dosed electric heat off Table O SO 2 Occupancy sensor state table occupancy sensor such as a binary Switch or a timeclock to detect occupancy The sensor can be either normally open or normally closed Reference Table O SO 2 Binary Outputs Reference Table O SO 3 for the Tracer ZNO10 245105 six binary outputs Table O SO 3 Binary outputs binary output X description pin 1 fan high speed 11 2 fan medium speed 12 fan low speed 11 4 main valve 115 5 auxiliary valve electric heat J 1 6 BOP6 2 position fresh air damper 11 7 Notes 1 Inafour pipe application BOP4 is used for cooling and BOP5 is used for heating 2 If no valves are ordered with the unit the factory default for the Tracer ZNO10 and ZN510 controller are BOP4 configured as normally closed BOP5 configured as normally open 3 If the fresh air damper option is not ordered on the unit BOP6 will be configured as sensor type sensor position _ unit occupancy mode normally open open occupied normally open closed unoccupied normally closed open unoccupied normally closed closed occupied 51 e TRANE Inputs Both Tracer ZN010 and ZN510 accept a maximum of five analog inputs Reference Table 5 4 Zone Sensors The zone sensors available
43. the unit Winterizing the Coil Make provisions to drain coils that are not in use especially when subjected to freezing temperatures To drain the coil blow the coil out with compressed air Next fill and drain the tubes with full strength ethylene glycol several times Drain the coil as com pletely as possible CAUTION Coil Freeze up Damage Failure to properly drain and vent coils when use during freezing temperatures may result in coil freeze up damage UNT SVXO7A EN UNT SVXO7A EN Maintenance e TRANE Fan Board Assembly Removal Follow the procedure below when replacing the coil or making repairs to the fan or motor WARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could resultin death or serious injury Vertical Units 1 Remove the front panel of cabinet and recessed units 2 Pull the main and overflow drain hoses of the main d
44. to observe polarity for LonTalk communication links The controller provides six 0 25 inch quick connect terminals for the LonTalk communication link connections as follows Two terminals for communication to the board Two terminals for communication from the board to the next unit daisy chain Two terminals for a connection from the zone sensor backto the controller Table O SO 16 Zone sensor wiring connections 1 description space temperature common setpoint fan mode communications communications juu N 59 e TRANE Maintenance Diagnostics Table 1 Tracer ZN520 Diagnostics Diagnostic Fan Other Outputs Note 1 Condensate overflow off Valves Closed Fresh air damper Closed electric heat Off Baseboard heat Off Low temperature detection off Valves Open Fresh air damper Closed electric heat Off Baseboard heat Off Low air flow fan failure off Valves Closed Fresh air damper Closed electric heat Off Baseboard heat Off Space temperature failure off Valves Closed Fresh air damper Closed electric heat Off Baseboard heat Off Entering water temp failure On Valves Enabled Note 2 Fresh air damper Enabled Note 2 electric heat Enabled Note 2 Baseboard heat Off Discharge air temp low limit off Valves Open Fresh air damper Closed electric heat Off Baseboard he
45. x EE DRAIN BOX Low Vertical Cabinet Unit Dimensions in Ibs 1 unit size 03 04 06 E A 3 10 5 6 4 8 he 5 4 She L B 2 21 2 13 3 8 Ya 11 he 1 1 5 6 11 he D 577 2 6 3 6 E 2 0 Ya 2 9 3 4 3 6 1 operating weight 125 155 164 shipping weight 12 139 148 Notes 1 Coil connections are always on the drain pan side and opposite the control box 2 Coil connections are 5 s O D sweat 3 All duct collar dimensions to the outside of the collar 4 See pages 23 24 for fresh air opening dimensions UNT SVXO7A EN 19 e TRANE dimensions Installation amp weights Inverted Vertical Cabinet Model M HANGER HOLES 1 7 8 VIEW 4 5 8 KEYSLOT 39 16 POWER WIRING T UNIT CONTROL OUTLET QUADRIFUSER TOP OR BAR GRILLE 215 18 2 4 3 32 mi D CONTROL WIRING I 27 16 FRONT INLET AND OUTLET LOUVERS FRONT VIEW E _ RH PIPING H sial a SIDE VIEW E s INLET OUTLET giie DUCT COLLAR OPTIONAL OPTI
46. 0 75 7 20 97 7 20 145 7 20 145 7 20 4 Row 15x3 5x8 15x3 5x8 20x3 5x8 29 5x3 5x8 38x3 5x8 57x3 5x8 57x3 5x8 38x9x20 38x9x20 51x9x20 75x9x20 97x9x20 145x9x20 145x9x20 Volume Gal Liters 1 Row Heat 06 23 06 23 08 30 11 42 114 53 21 79 21 79 2 Row 12 45 12 45 15 57 22 83 28 1 06 42 1 59 42 1 59 3Row 18 68 18 68 23 87 33 1 25 42 1 59 62 2 35 62 2 35 4Row 24 91 24 91 30 1 14 1 67 56 2 12 83 314 83 3 14 Fins Ft 2 144 4 7 144 4 7 144 4 7 144 4 7 144 4 7 144 4 7 144 4 7 3Row 144 4 7 144 4 7 144 4 7 144 4 7 144 4 7 144 4 7 144 4 7 4Row 144 4 7 144 4 7 144 4 7 144 4 7 144 4 7 144 4 7 144 4 7 Reheat Coil Data 1 Row Hot Water or Steam Face Area Ft cm 0 6 0 6 08 12 16 24 24 557 557 743 1120 1490 2230 2230 LxDxH In cm 15 1 5 6 15 1 5 6 20 1 5 6 29 5 1 5 6 38 1 5 6 57 1 5 6 57x1 5x6 38 4 15 38 4 15 51 4 15 75 4 15 97 4 15 145 4 15 145 4 15 Volume Gal Liters 12 45 12 45 15 57 22 83 28 1 06 42 1 59 42 1 59 Fins Ft cm 48 1 6 48 1 6 48 1 6 48 1 6 48 1 6 48 1 6 48 1 6 Fan Motor Data Fan Quantity T 1 1 2 2 3 3 Size Dia x Width cm 6 31x4 6 31x6 5 6 31x7 5 6 31x6 5 6 31x7 5 1 6 31x7 5 6 31x7 5 16x10 16x17 16x19 16x17 16x19 16x19 16x19 Size D
47. 0 10 13 10 08 13 10 1080 80 60 13 24 1 8 03 130 Table 7 High static motors on units with three and four row coils NOS unit 115 volt 208 230 volt 277 480 volt rpm Values for fractional HP s KW s are approximate values and size RA hp kW hp kW FLA hp KW H M L not necessarily the actual HP kW 02 11 07 05 06 07 05 05 07 05 1480 1110 865 03 08 06 07 08 06 05 08 06 1500 1355 1110 04 21 i3 10 09 130 07 3 10 1580 13 5 1240 06 34 24 18 14 24 18 11 24 18 1475 1285 975 08 34 24 18 14 24 18 11 24 18 1475 1285 975 10 21 13 10 09 13 10 07 180 1580 1375 1240 34 24 18 14 24 18 11 24 18 1475 1285 975 12 21 113 10 09 130 07 13 10 1580 1375 1240 34 24 18 14 24 18 11 24 18 1475 1285 975 Note Actual rpm will vary with application and configuration Size 10 amp 12 units have two motors UNT SVXO7A EN 37 e TRANE 38 Installation Table I ER 8 Fan coil electric heat kW UnitSize UnitVoltage kW kW kw kW kW kW kW kW kW kW kw 02 15 10 15 20 230 10 15 20 277 10 15 20 208 08 11 15 19 03 115 10 15 20 2 5 230 10 15 20 2 5 277 10 15 20 2 5 208 08 11 15 19 23 04 115 2 0 25 30 230 2 0 25 3 0 277 2 0 25 3 0 208 1 5 19 23 30 06 115 2 0 30 230 2 0 30 40 50 60 277 2 0 30 40 50 60 208 15 23 30 38 45 5 3 08 115 20 30 230 2 0 30 40 50 60 7 0 277 2 0 30 40 50 60 70 208 15 23 30 38 45 53 60 10 115 30 230 30 40 50 60 70 80 277 30 40 50
48. 0 20x 3 50 MOUNTING BOLT SEE NOTE 25 20x 50 IN RETAINING SCREW PARTS LIST TRIM RING ASSEMBLY 1 INSTALLATION DRAWING 1 1 UNT SE ___ 02 06 08 12 SAFETY CHAIN ASSEMBLY 4 25 20 2 00 IN BOLT TINNERMAN CLIP OPPOSITE SIDE EXPANSION COLLAR ASSY SEE NOTE 2 BOTTOM PANEL DOOR Note The trim ring assembly cannot accomodate unlevel ceilings Note On sizes 8 10 amp 12 center installa tion position and use 2 or 3 5 inch bolts whichever is best suited for installation Also install two safety chains assemblies on these sizes Note Expansion collar is furnished with fan coil with bottom retum only The collar is not necessary for Force Flo units Figure 1 Installing the trim ring assembly on horizontal recessed units 5 e TRANE installation Installation procedure Wall Mounted Control Options D adi Figure HP 2 Zone sensor with off auto high low fan speeds setpoint knob on cancel and comm jack Figure HP 3 Zone sensor with on cancel and iach Figure HP 5 Zone sensor only UNT SVXO7A EN 43 e TRANE Installing Wall Mounted Controls Reference the wall mounted zone sensor dimensions in Figure I IP 6 Position the controller on an inside wall three to five feet above the floor and at least 18 inches from the nearest outside wall Installing the co
49. 1 1 3 8 ID TUBE 1 1 10 1 16 FRONT INLET 7 MAIN DRAIN OPEN CONNECTION FOR 7 8 OD COPPER TUBE AND CLAMP 47 16 9 16 19 16 eisie I E e4 67 16 FRONT VIEW LH PIPING 1 COIL CONNECTIONS 11 8 2 CONTROL ndn sain BOX FILTERS 9 X AUXILIARY DRAIN PAN 2 X 4 JUNCTION BOX POWER WIRING 8 7 8 KO S OPTIONAL 10 UNT SVXO7A EN Installation e TRANE dimensions amp weights Vertical Cabinet Model B 4 5 8 DIA KEYSLOT TOP VIEW HANGER HOLES Jie KD 658 65 8 9 16 POWER WIRING 4 UNIT LEVELING DEVICES BOTTOM ONLY 39 16 6 1 2 814 OUTLET QUADRIFUSER aoe CONTROL OR BAR GRILLE I 215 16 2 1 3 32 KO S 6 wl G s CONTROL WIRING 2716 7 70M ONLY 6 B 6 FRONT VIEW 4 5 8 DIA KEYSLOT SIDE RH PIPING HANGER HOLES VIEW 552422 an MD i E T 1 0 1 Ei B i i rn bg 2 1 3 16 CONTROL BOX T4 i MEET SE 111 i i licer 1 3 1 2 L ipts
50. 212 DAMPER ACTUATOR 41 N CAUTION ile 202 SWITCH 34 USE COPPER CONDUCTORS ONLY MAIN COIL VALVE UNIT TERMINALS ARE DESIGNED TO ACCEPT OTHER TYPES OF BLK HEATING COIL VALVE 37 CONDUCTORS 3RTI AUTO CHANGE TEMP SENSOR 39 FAILURE TO DO SO MAY CAUSE 3512 ELEC HEAT AUTO LOCKOUT SW 40 DAMAGECTOSIHECEQUIRMENT 358 CONDENSATE OVERFLOW SW 37 481 FAN MOTOR 22 4RT2 RETURN AIR SENSOR 23 akam SHRI 555 10AB A 4 L j SHR1 2 HEATING ELEMENT 12 555 6 LIMIT SWITCH 12 _ SHR2 602 ZONE SENSOR MODULE 26 J CONNECTOR 4 PLUG CONNECTOR DEVICE PREFIX LOCATION CODE AREA LOCATION 1 CONTROL PANEL 2 CONTROL END 3 PIPING END 4 SECTION 5 SECTION STANDARD 277 ISOLATION REVERSIBLE CW 6 CUSTOMER INSTALLED 7 FELD SUPPLIED DEVICE 4RT2 1 2 2 1 2 2 5 E WHT PLUG amp 0 8 3 28 1 248 2 3 w ZONE TB3 1 I 512 GND 783 6 55 5 5 5 5 5 5 ___ GND 2 5 22 lt 2 i 1 SET T83 3 5 8 7 010 2 GND 2 1 FAN TB3 4 107 1 312 5 8 av 22 2 1 1 24V at ae ioo el GND J2 3 1 2 POWER 2 6 1 45 comm Low 24 VOLTAGE SECTION J COMM 7 4 7 4 244 B VNX10 JZNX10 2 5 1 414 COMM Hi 24 High High 412 1 244 m 1 Med 1 4 202 1K4 1 7 2
51. 3 240 3 3 3 0 73 480 3 4 3 0 3 7 208 1 2 45 217 240 1 2 60 25 0 03 277 60 1 2 60 217 28 3 3 45 12 6 240 3 3 60 145 480 3 4 6 0 7 3 208 1 2 5 7 27 5 240 1 2 7 5 31 3 04 277 60 1 2 75 271 208 3 3 5 7 15 9 240 7 5 181 480 3 4 75 9 1 208 1 2 79 38 0 240 1 2 10 5 438 06 277 60 1 2 10 5 38 0 208 3 3 79 219 240 3 3 10 5 253 480 3 4 10 5 127 Note All data based on individual units Electric heat will operate only with fan at high speed Table 11 Force Flo single stage low kW electric heat unit size voltage wires kW amps ph kW amps ph kw amps ph 02 208 60 1 2 0 75 3 7 15 7 3 240 60 1 2 1 0 4 2 2 0 8 4 277 60 1 2 1 0 3 7 2 0 7 3 03 208 60 1 2 2 25 10 9 240 60 1 2 3 0 12 5 277 60 1 2 30 109 208 60 3 3 2 25 63 240 60 3 3 3 0 73 480 60 3 4 3 0 3 7 04 208 60 1 2 2 25 109 240 60 1 2 30 12 5 277 60 1 2 30 109 208 60 3 3 2 25 63 240 60 3 3 3 0 73 480 60 3 4 3 0 37 06 08 60 2 2 25 109 33 159 240 60 1 2 30 125 45 188 277 60 1 2 30 109 45 16 3 208 60 3 3 2 25 6 3 3 3 9 2 240 60 3 3 3 0 73 45 10 9 480 60 3 4 3 0 3 7 45 55 08 08 60 1 2 2 25 10 9 33 159 45 217 240 60 1 2 3 0 125 45 18 8 6 0 25 0 277 60 1 2 3 0 10 9 45 16 3 60 217 208 60 3 3 2 25 63 33 9 2 45 12 5 240 60 3 3 3 0 73 45 10 9 60 14 5 480 60 3 4 30 37 45 5 5 60 7 3 10 208 60 1 2 2 25 10 9 33 15 9 5 7 27 5 240 60 1 2 30 125 45 188 75 313 277 60 1 2 30 109 45 16 3 75 271 208 60 3 3 2 25 63 33 9 2 5 7 15 9 240 60 3 3 3 0 73 45 10 9 7
52. 36 FAILURE TO DO SO MAY CAUSE 8 DAMAGE THE EQUIPMENT 1K11 CHANGEOVER RELAY 52 j 3512 ELEC HEAT AUTO LOCKOUT SW 37 3513 CHANGEOVER THERMOSTAT 32 481 22 T A L SHR1 2 HEATING ELEMENT 12 12 555 6 LIMIT SWITCH 12 13 1 4 2 CONNECTOR 15 PLUG CONNECTOR 16 DEVICE PREFIX LOCATION CODE LOCATION jo 1 CONTROL PANEL 2 CONTROL END dnm 3 PIPING END 4 SECTION gs 5 SECTION STANDARD 277 ISOLATION REVERSIBLE 6 CUSTOMER INSTALLED 21 7 FIELD SUPPLIED DEVICE 2 23 24 25 26 27 1 2 2 3 5 2 t r PI 5 a Z z g ura E z E F Mains i 24 42 3 I 47 1 12 5 3 GND J2 2 GI UL 24V 12 15 Ka E 47 3 24V Y HIGH VOLTAGE SECTION 2 47 4 24 1 1 33 412 1 24V m 1K4 23 4 J12 2 ST1 sn w a am 2222222222 592 ae Openvi 4 Openv1 5 M 55 BLK 46 7 24 5 883 Heat 4 2 B e 9546 8 5 36 OpenDP pe U 351 46 11 2 22 22 4 eni A WARNING Customer Controller must NOT allow electric heat actuation without 39 the fon being energized 40 NOTES Aus 1 UNLESS OTHERWISE NOTED ALL SWITCHES ARE 7 1 11
53. 3is athree position slide switch that actuates high speed interlock to operate with specific electric heat coils Position 1 default position and for low vertical units with electric heat Position 2 single stage electric heat model number digit 18 N Position 3 two stage electric Switch SW4 Electric Heat Lockout SW4 allows the unit to use the electric heat lockout function when hydronic heat is in operation Electric heat lockout prevents electric heat from enabling when hydronic heating is available This feature is on models with both hydronic and electric heat Low vertical models with electric heat switch SW4 to position 2 UNT SVXO7A EN Maintenance e TRANE troubleshooting Troubleshooting Tracer 2010 ZN510 amp ZN520 UNT SVX07A EN Yellow COMM LED communication is Red SERVICE LED service is needed Figure 1 The Tracer 2 010 board Red SERVICE LED During normal operation the LED is off continuously when power is applied to the controller If the LED is on continuously even when power is applied to the controller means that someone 15 pressing the SERVICE button or that the controller has failed If the LED flashes once every second use Rover 5 service tool to restore the unit to normal operation Refer to the Rover product literature for more information Note If the Service button is held down for more than 15 seconds on the Tracer ZN520 con
54. 5 18 1 480 60 3 4 3 0 3 7 45 5 5 7 5 91 12 208 60 1 2 2 25 109 33 15 9 66 31 8 240 60 1 2 3 0 12 5 45 188 90 37 5 277 60 1 2 30 109 45 16 3 90 32 5 208 60 3 3 2 25 63 33 92 6 6 184 240 60 3 3 3 0 73 45 10 9 90 217 480 60 3 4 3 0 3 7 45 5 5 9 0 10 9 Note All data based on individual units Electric heat will operate only with fan at high speed UNT SVXO7A EN 39 TRANE Installation Table ER 12 Force 2 stage electric heat unit 15 stage total total size volts hz phase wires kW kw amps ph 208 1 2 0 75 2 25 10 9 240 1 2 10 3 0 12 5 02 277 60 1 2 10 3 0 10 9 208 3 3 0 75 2 25 63 240 3 3 10 3 0 73 480 3 4 10 3 0 37 208 1 2 15 45 21 7 240 1 2 20 60 25 0 03 277 60 1 2 20 60 217 28 3 3 15 45 12 6 240 20 60 145 480 3 4 2 0 6 0 7 3 208 1 2 19 57 275 240 1 2 25 7 5 313 04 277 60 1 2 25 75 271 208 3 3 19 5 7 15 9 240 3 3 25 75 18 1 480 3 4 25 75 9 1 208 1 2 34 79 38 0 240 1 2 45 105 43 8 06 277 60 1 2 45 105 38 0 28 3 3 34 79 219 240 3 3 45 10 5 25 3 480 3 4 45 10 5 12 7 208 1 2 45 10 1 48 8 240 1 2 60 135 56 3 08 277 60 1 2 60 135 488 28 3 3 45 10 1 28 2 240 3 3 60 135 32 5 480 3 4 6 0 13 5 16 3 208 1 2 60 135 65 0 240 1 2 80 18 0 75 0 10 277 60 1 2 80 180 65 0 208 3 3 60 135 37 6 240 3 3 8 0 18 0 43 3 480 3 4 8 0 18 0 217 28 1 2 68 15 0 72 3 240 1 2 90 20 0 834 12 277 60 1 2 90 20 0 72 3 208 3 3 68 15 0 417 240 3 3 9 0 20 0 48 2 480 3 4 9 0 20 0 24 1 Note When both st
55. 5 8 39 16 POWER WIRING 4 UNIT LEVELING DEVICES BOTTON ONS OPTIONAL I 1 T 35 8 Pere 61 2 9 1 85 16 u n0 0 OUTLET 7 CONTHOE QUADRIFUSER OR BAR GRILLE 2 15 16 2 1 3 32 KO S p CONTROL WIRING BOTTOM ONLY 6 6 FRONT VIEW 4 5 8 DIA KEYSLOT 10 RH PIPING HANGER HOLES eee SIDE VIEW FC dh 1 N 6 1 1 i l l x I 1 7 2 4 1 2 SNS OZAR CONTROL png BON o oe s eru ri 1 1 3 1 2 3 2078 ono gt V T 1 i y 1 1 I 5 n 21 K 27 e Mij z z l ES 8 3 16 E i 61576 0 FRONT INLET i l 51 16 OPEN OR BAR GRILLE I 11 1 1 Y Y amne l SECONDARY DRAIN _ la is 3 8 ID TUBE IE om 7 57 16 L MAIN DRAIN CONNECTION FOR __ _ 8 7 8 OD COPPER TUBE AND CLAMP F OPTIONAL EXTENDED END POCKET FRONT VIEW COIL CONNECTIONS LH PIPING es 19 Vertical Slope Top Unit Dimensions in Ibs H 1 AUXILIARY NH unit DRAIN PAN H size 02 03 04 06 08 10 12 U Hik e 2 9 he 3 25h 3211546 458947 _ 6 3 ho Wee Ai BOX 1 9 2 2 06 2 1 Bhe 3 8 hse 5 3 5 6
56. AILURE DO SO MAY CAUSE DAMAGE TO THE EQUIPMENT 481 FAN MOTOR 22 4RT2 RETURN AIR SENSOR 23 602 ZONE SENSOR MODULE 26 CONNECTOR PLUG CONNECTOR DEVICE PREFIX LOCATION CODE AREA LOCATION 1 CONTROL PANEL 2 CONTROL END 3 PIPING END 4 FAN SECTION 5 SECTION STANDARD 277 ISOLATION REVERSIBLE CW 6 CUSTOMER INSTALLED 7 FIELD SUPPLIED DEVICE 2 1 2 2 8 1 2P8 2 2 WHT PLUG amp 2 248 1 208 2 aus 366 438 502 ZONE T83 1p 98 1 L Ji zone 402 GND T83 6 2 1 55 5 5 s 5 5 2222 GND 183 2 Re amp bw SET T83 3 45 555 ZNO1O on joins 5 GND J2 1 TB3 4 97 42 1 2 24 2 2 1 1 24V TW mena eMC 11 GND J2 3 1 2 POWER T82 6p 4 4 45 COMM Low 47 3 24V Y HIGH VOLTAGE SECTION COMM T82 5p 4 4 COMM zi 47 4 24V B igh Med 202 El 1e low je 43 1 OpenV1 gt d 10 2 2 10 TB2 4 p 47y 10 1 FAN SW s 081 m 4 46 11 24 3 ERK 916 12 2 8 3L3 3871 46 1 46 2 An In 258 16 3 Bin In disi uis OCC UNOCC ion FIELD RECONFIGURED 16 4 Bin n ANLG LINK 12 1 EWT
57. D BY THE FIELD SOLID LINES INDICATE WIRING BY TRANE CO NUMBERS ALONG THE RIGHT SIDE OF THE SCHEMATIC DESIGNATE THE LOCATION OF CONTACTS BY LINE NUMBER ALL FIELD WIRING MUST BE IN ACCORDANCE WITH THE NATIONAL ELECTRIC CODE NEC STATE AND LOCAL REQUIREMENTS ALL FIELD WIRING MUST HAVE AN INSULATION VOLTAGE RATING THAT EQUALS OR EXCEEDS UNIT RATED VOLTAGE 73 Tracer ZNO10 with electric heat 20 21 22 23 24 25 26 27 28 29 30 32 33 34 35 36 7 38 39 40 41 42 43 44 45 46 48 49 74 5 Maintenance pical wiring diagram LEGEND DEVICE BESIT ON DESCRIPTION AX WARNING HAZARDOUS VOLTAGE LC un TRANSFORMER A DISCONNECT ALL ELECTRIC POWER TED 1781 MAIN POWER TERMINAL BLOCK 5 INCLUDING REMOTE DISCONNECTS SPLICE 101 MAIN BOARD 26 BEFORE SERVICING 1U2 DAUGHTERBOARD 27 FAILURE DISCONNECT POWER 1AA BLK GRN 159 FREEZE STAT BEFORE SERVICING CAN CAUSE ATTACH 45 SEVERE PERSONAL INJURY OR DEATH amis Ab 1K4 ELECTRIC HEAT CONTACTOR 33 a
58. DULE 26 J JACK CAP CONNECTOR P PLUG CONNECTOR DEVICE PREFIX LOCATION CODE AREA LOCATION CONTROL PANEL CONTROL END PIPING END FAN SECTION COIL SECTION CUSTOMER INSTALLED ov FIELD SUPPLIED DEVICE 602 ZONE TB3 1 ZONE TEMP GND TB3 6 5 5 5 5 5 5 GND 4182 2 SENSOR GND tk ee 2 Y 3 Z m Rm SET 183 3 TB2 3 SETPOINT 2258 gt FAN TB3 4 I 24v 206 94181 1 24 3 e GND J2 3P 4T81 2 POWER 24 Y HIGH VOLTAGE SECTION ZNS2OERE 24v B COMM High 1 24V Med 24V GNDe 4 1 2 24V GND 2 sr 5 5 3 572 24V ACe dTB1 1 24V 24 5 1 244 3 XN 46 1 Ann 46 2 258 46 3 Bin In 46 4 Bin In J3 1 7 144 1 1 24V BN aya 182 344 11 2 5 COW 1P7 344 11 3 OP 8 _ 197 44 5 11 4 CL 4874 51E 4915 17 4J15 1 WHT PLUG BLU CAP 52E 4P15 274J15 2 NOTES 1 UNLESS OTHERWISE NOTED ALL SWITCHES ARE A WARNING SHOWN 25 77 F AT ATMOSPHERIC PRESSURE AT 50 RELATIVE HUMIDITY WITH E ESTNE BOWER ALL UTILITIES TURNED OFF AND AFTER DISCONNECT ALL ELECTRIC POWER NORMAL SHUTD
59. ED 25 16 HR VERTICAL SLOPE RECESS PANEL NOT SHOWN DIMENSIONSABE VERTICAL CABINET TYPICAL TO VERTICAL RHS T UNIT STYLES RHS gt 1 CS gt RHR GRA 1 RHR RO or P 4 1 HR SS d S s 1 9 13 16 cs 1 11 1 4 RHS fre CNN 1 8 13 16 fier Sy d Y I d azasaet EN MU Ho RHR VR 1 8 1 2 2220 uf 7 HR 1 6 11 16 7 HS 1 I in Fan Coil BOTTOM OF VERTICAL UNITS Coil Connections 7 hoo Horizontal Units SHR 5 I HORIZONTAL CONCEALED ON HS 1 2255 N mE ON Ly N HORIZONTAL RECESSED I CR Woy RECESS PANEL NOT SHOWN F o L oe UO s ay if 7 11 44 1 4 DIMENSIONS ARE TYPICAL TO HORIZONTAL UNIT STYLES 1038 C8 _ 1 9 3 8 1 9 1 16 1957 5 16 59 55 16 47 8 2 5 16 ius 4 3 8 CR As dus 3 83 16 I OMS VC t RHR 2 Nu 7 1 Stee RHR UJ HORIZONTAL CABINET 1 8 9 16 1 11 7 8 RHS IIIY 22 UNT SVXO7A EN e TRANE dimensions Installation amp weights 53 8 HS 5 5 16 HS 5 5 16 HS Vertical Units mel 55 16 5
60. ING BY OTHERS AND OR DASHED DE COMPONENTS PROVI SOLID LINES 3 NUMBERS ALONG SCHEMATIC DESIGNA CONTACTS BY LINE 4 ALL FIELD WIRING MUST BE IN ACCORDANCE WITH THE NATIONAL ELECTRIC CODE NEC STATE AND LOCAL REQUIREMENTS ALL FIELD WIRING MUST HAVE AN INSULATION VOLTAGE RATING THAT EQUALS OR EXCEEDS UNIT RATED VOLTAGE POWER AVAILABLE FOR FIELD SUPPLIED CONTROLLER IS 24VAC 40VA OUTPUTS MUST BE RATED AT 10VA OR BETTER 71 CSTI Non Fan Speed Switch Maintenance pical wiring diagram LEGEND DEVICE 1 DESCRIPTION DESIGNATION A WARNING 277 60 1 2 HAZARDOUS VOLTAGE L1 N Fd DISCONNECT ALL ELECTRIC POWER i 151 DISCONNECT SW 4 INCLUDING REMOTE DISCONNECTS l 171 TRANSFORMER 31 PORER 151 1TB1 POWER TERMINAL BLOCK 5 4 BEFORE SERVICING CAN CAUSE SPLICE 6U3 CUSTOMER SUPPLIED 28 SEVERE PERSONAL INJURY OR DEATH 102 DAUGHTERBOARD 27 AX CAUTION pru ELECTRIC HEAT CONTACTOR 33 6 USE COPPER CONDUCTORS ONLY 212 DAMPER ACTUATOR 41 UNIT TERMINALS ARE NOT DESIGNED ACCEPT OTHER TYPES OF G CONDUCTORS L COIL VALVE
61. IPING COIL CONNECTIONS E ERUIT Vertical wall hung cabinet unit dimensions amp weights in Ibs eS size 02 03 04 06 08 10 12 815 2 9 5 6 2 2 Fhe 3 11 5 6 4 8 5 6 6 3 56 m 1 05 2 2 2 11 Bhe 3 8 5 3 She pe jowal D m E E E E 1 79 2 05 2 9 Bhe 3 6 h 5 1 As F 1 735 1 1 2734 3 33 431135 operating weight 97 15 155 164 218 shipping weight 84 12 139 148 200 Notes 1 Coil connections are always on the side opposite the control box 2 Coil connections are O D sweat See pages 21 22 for locations 3 All duct collar dimensions are to the outside of the collar 4 See pages 23 24 for fresh air opening dimensions 2 X 4 JUNCTION BOX POWER WIRING 8 7 8 5 OPTIONAL UNT SVXO7A EN 15 e TRANE dimensions Installation amp weights Vertical Recessed Model H TOP VIEW 5 8 93 4
62. N a 3 4 SIDE VIEW OUTSIDE OPENING BOTTOM 1 1 1 2 3 11 16 OUTSIDE AIR OPENING BOTTOM Fresh Air Opening Dimensions Vertical Units Unit Size 02 03 04 06 08 10 12 1 2 8 3 5 5707 B 1956 2 25 2 11 Bhe 3 8 he 5 3 hs 3 OUTSIDE AIR OPENING BACK 3 OUTSIDE AIR OPENING BACK 25 e TRANE Installation Wall Box CONTINUOUS Wall Box Dimensions MORTAR RIBS Unit Size Dimensions Internal TOP AND Ref Only AxB Supports BOTTOM 02 03 243 X4 3h 1 04 243 7 1 06 33 7 2 1 8 08 37 71 Yo 4 10 12 58 1 4 x 77 1 n 14 Ur 21 U i 4 WOVEN ALUMINUM INSECT SCREEN _ CLEARANCE FOR DRAINAGE ADDITIONAL INTERNAL 5j a CONTINUOUS DRIP LIP SUPPORTS EQUALLY SPACED TOP AND BOTTOM NOT TO EXCEED 12 26 5 e TRANE Installation Projection Panel Projection Panel Dimensions Unit Size 02 03 04 06 08 10 12 A 3 11 4 3 5 3 5 5 1 7 5 1 2 6 2 6 2 6 2 91 2 9 1 UNIT TO WALL TOP VIEW Projection Panel All Unit Sizes y uy 3 F 5 6 D lig 19 218 2
63. Normally these inputs are factory configured for the following functions Binary input 1 Low temperature detection freezestat Binary input 2 Condensate overflow Binary input 3 Occupancy Generic Operation e TRANE Note The generic binary input can be used with a Tracer Summit building automation system only Each binary input default configuration including normally open closed is set at the factory However you can configure each of the four binary inputs as normally open or normally closed The controller will be set properly for each factory supplied binary input end device When no device is connected to the input configure the controller s input as not used Table O SO 12 Binary input configurations Binary Outputs Binary outputs are configured to support thefollowing Three fan stages when one or two fan stages are present medium fan speed can be configured as exhaust fan One hydronic cooling stage One hydronic heating stage dehumidification requires this to be in the reheat position One DX cooling stage One or two stage electric heat dehumidification requires this to be in the reheat position Face and bypass damper Modulating outdoor air damper baseboard heat stage For more information see Table O SO 13 binary controller operation input description configuration contactclosed contactopen BI 1 low temperature detection 1 normally closed
64. ONS cA 4 pe na L r E 4 5 8 DIA pag kel KEYSLOT HANGER 1 8 7 8 T HOLES sss Se See 111 2E ORO Y VT H ts 111 11 11 11 11 CONTROL Dg BOX ns oaa ec ss S ccr 2 4 3 4 2 2 13 16 i H 1 3 1 2 E FRONT OUTLET LOUVERS ui ia 0 J lt i 1 ir N N gt uis NO 1 1 4 BOTTOM OUTLET DUCT COLLAR OPTIONAL i 71 8 1 vw 258 6 6 BOTTOM OUTLET DUCT COLLAR A FRONT VIEW 2 X 4 JUNCTION BOX LH PIPING POWER WIRING 8 7 8 KO S OPTIONAL Inverted vertical cabinet unit dimensions weights in Ibs unit size 02 03 04 06 08 10 12 A 2 9 5 6 3 25he amp 3 1 Bhe 4 85he 6 3 1 9 5 6 2 2 5 6 2 11 Ae 3 8 he 5 3 She C 7 5 7 Mg 8 ls 71 7 5 1 6 250 2 6 376 5 0 E 1 7 250 2 91 3 6 5717 1 7 5 4 1 11 5 4 2 7 3 4 3 33 4 1 90 G 8 5g 8 187 9 7 8 e 8 5 H TG 1 10 2747 374 27107 operating weight 97 15 155 164 218 shipping weight 84 12 139 148 200 Notes 1 Coil connections are always on the side opposite the control box 2 Coil connections 5 O D sweat See pages 21 22 for locations 3 All duct collar dimensions are to the outside of the collar 4 See pages 23 24 for fresh air opening dimensions COIL CONNECTIONS I 11 8
65. OWN HAS OCCURRED DE 2 DASHED LINES INDICATE RECOMMENDED FIELD St n cg WIRING BY OTHERS DASHED LINE ENCLOSURES BEFORE SERVICING CAN CAUSE x SEVERE PERSONAL INJURY OR DEATH AND OR DASHED DEVICE OUTLINES INDICATE COMPONENTS PROVIDED BY THE FIELD A CAUTION SOLID LINES INDICATE WIRING BY TRANE CO USE COPPER CONDUCTORS ONLY 3 NUMBERS ALONG THE RIGHT SIDE OF THE UNIT TERMINALS ARE NOT DESIGNED SCHEMATIC DESIGNATE THE LOCATION OF TO ACCEPT OTHER TYPES OF CONTACTS BY LINE NUMBER CONDUCTORS FAILURE TO DO SO MAY CAUSE DAMAGE TO THE EQUIPMENT 4 FIELD WIRING MUST IN ACCORDANCE 59 60 WITH THE NATIONAL ELECTRIC CODE NEC STATE AND LOCAL REQUIREMENTS ALL FIELD WIRING MUST HAVE AN INSULATION VOLTAGE RATING THAT EQUALS OR EXCEEDS UNIT RATED VOLTAGE OR FIELD RECONFIGURED Occ UNOCC 38 GENERIC 2 BI 2 COND aaj 8 1 nes FRZ STAT 1 AI 3 10175 GENERIC BINARY OUTPUT IS RATED 24 12 PILOT DUTY COMMUNICATION WIRE MUST TRANE PART 400 20 28 OR WINDY CITY OR CONNECT AIR LEVEL 4 CABLE AGGREGATE RUN CAUTION MAXIMUM OF 4500 FOOT DO NOT RUN POWER IN THE SAME CONDUIT OR WIRE BUNDLE WITH COMMUNICATION LINK 68 FOR ADDITIONAL INFORMATION REFER UNT SVXO7A EN e TRANE a business of American Standard Inc www trane com For more information co
66. R CONNECT AIR LEVEL 4 CABLE MAXIMUM OF 4500 FOOT AGGREGATE RUN CAUTION DO NOT RUN POWER IN THE SAME CONDUIT OR WIRE BUNDLE WITH COMMUNICATION LINK FOR ADDITIONAL INFORMATION REFER TO 68 UNT SVXO7A EN 20 21 22 23 24 25 26 27 28 29 30 32 33 34 35 36 7 38 39 40 41 42 43 44 NOTES 45 46 47 48 Maintenance e pical wiring diagram Eg Tracer ZN510 with main and auxilliary valves LEGEND DEVICE u 277 60 1 DESIGNATION DESCRIPTION ass 1 1 A WARNIN 1 TRANSFORMER 31 HAZARDOUS VOLTAGE 1 1 MAIN POWER TERMINAL BLOCK 5 702 DAUGHTERBOARD E BEFORE SERVICING 1AA BLK ERN 159 FREEZE STAT 3 FAILURE DISCONNECT POWER ATTACH LL BEFORE SERVICING CAN CAUSE GROUND SEVERE PERSONAL INJURY OR DEATH 212 DAMPER ACTUATOR 41 CAUTION o 202 SWITCH 34 31 COIL VALVE 36 USE COPPER CONDUCTORS ONLY L3 HEATING COIL VALVE E ACCEPT OTHER TYPES OF U 3RTI AUTO CHANGE TEMP SENSOR 39 CONDUCTORS 358 CONDENSATE OVERFLOW SW 40 F
67. SSURE INCHES WATER LLL 1 2 ACCU FLO aia 4 4 0 1 4 4 14144 10 19 95 51 2 3 4 5 67891 2 3 4 5 6 7 8 910 FLOW GALLONS MINUTE Chart 1 Manual circuit setter valve differential pressure vs flow 34 UNT SVXO7A EN Steam Piping CAUTION Coil Damage In all steam coil installations the condensate return connections must be at the low point of the coil to ensure condensate flows freely from the coil at all times Failure to do so may cause physical coil damage from water hammer unequal thermal stresses freeze up and or corrosion 1 Make piping connections to the steam coil as shown in Figure 11 Cap the unused connection 2 The coil is already pitched within the unit to provide proper pitch to drain condensate out of the coil Verify that the unit has been properly leveled 3 Install a 15 degree swing check vacuum breaker in the unused condensate return tapping as close as possible to the coil 4 Vent the vacuum breaker line to atmosphere or connect it into the return main at the discharge side of the steam trap 5 Pitch all steam supply and retum mains down minimum of one inch per ten feet in the direction of flow 6 Do not drain the steam mains or take off
68. T 1 13 16 113 16 RH PIPING HANGER HOLES 1 0 9 16 CONTROL F Box FRONT INLET OPEN 215 1 1 1 4 211 16 US 3 E 10 11 16 E 6 7 16 m A FRONT VIEW LH PIPING usse 1 COIL CONNECTIONS CONTROL BOX AUXILIARY DRAINPAN 6 18 Low Vertical Concealed Unit Dimensions in Ibs unit size 03 04 06 3 5 he 4 25 4 11 B 2 2 Ya 2 134 3 8 1 C 2 3 3 0 Bho 3 9 She D 1 1054 7 2 7 Bhe 3 4 56 2 0 14 2 934 3 6 1 4 operating weight 109 139 147 shipping weight 96 123 131 Notes 1 Coil connections are always on the drain pan side and opposite the control box 2 Coil connections are 5 O D sweat 3 All duct collar dimensions are to the outside of the collar 4 See pages 23 24 for fresh air opening dimensions SIDE VIEW 1 2 1 2 5 8 DUCT COLLAR 1 3 1 8 1 2 9 16 115 16 MAIN DRAIN CONNECTION FOR 7 8 OD COPPER TUBE AND CLAMP SECONDARY DRAIN CONNECTION FOR 3 8 ID TUBE UNT SVXO7A EN e TRANE dimensions Installation amp weights Low Vertical Cabinet Model L 2 5 8 DIA KEYSLOT HANGER HOLES 2 1 3 32 KO S TOP VIEW 10 15 16
69. Unit diagnostics can affect the Tracer ZN520 controller operation causing unit operation to be defined as abnormal Refer to the Troubleshooting section for more information about abnormal unit operation The heating output is controlled based on the heating capacity At 0 capacity the heating output is off continuously Between 0 and 100 capacity the heating output 5 controlled according to modulating valve logic modulating valves or cycled on two position valves As the load increases modulat ing outputs open further and binary outputs are energized longer At 10096 capacity the heating valve is fully open modulating valves or on continuously two position valves The Tracer ZN520 fan output s normally run continuously during the occupied and occupied standby modes but cycle between high and off speeds with heating cooling during the unoccupied mode When in the occupied mode or occupied standby mode and the fan speed is set at the high medium or low position the fan runs continuously at the selected speed Refer to the Trouble shooting section for more information on abnormal fan operation When the units supply fan is set to auto the controller s configuration determines the fan speed when in the occupied mode or occupied standby mode The fan runs continuously at the configured heating fan speed or cooling fan speed For all fan speed selections except off the fan cycles off during unoccupied mode T
70. able O SO 1 UNT SVXO7A EN Operation e TRANE Table O SO L Unit mode as related to water temperature unit type EWT sensor required coil water temperature 2 pipe changeover yes COOLS if space temp EWT gt 5 F HEATS if EWT space temp gt 5 F 4 pipe changeover yes COOLS if space temp EWT gt 5 F HEATS if EWT space 5 F 2 pipe heating only no hot water assumed 2 pipe cooling only no cold water assumed 4 pipe heat cool no cold water assumed in main coil hot water assumed in aux coil Binary Inputs BIP3 Occupancy Sensor I Binary input 8 on Tracer ZNO1O Low Temperature Detection and 24510 5 available for field wiring an on The factory hard wires the low temperature detection sensor to binary input 1 BIP1 on the Tracer 21010 and 2510 The sensor defaults normally closed N C and will trip off the unit ona low temperature diagnostic when detecting low temperature In addition the Tracer 21010 and 24510 control unit devices as listed below fan off valves open electric heat off damper closed Note See the Diagnostics section for more information BIP2 Condensate Overflow Detection ion The factory hard wires the condensate overflow sensor to binary input 2 2 on the Tracer 24010 24510 The sensor defaults normally closed and will trip off the unit on a condensate overflow diagnostic if condensate reaches
71. ages are on the electric heat will operate only when fan is in high speed All data based on individual units UNT SVXO7A EN installing the Unit Follow the procedures below to install the unit properly Reference the Dimensions and Weights section for specific unit dimensions and mounting hole locations Vertical Units CAUTION Electrical Wiring Do not allow electrical wire to fall between the unit and installation surface Failure to comply may result in electrical shorts or difficulty accessing wires Install vertical units in an upright position using the s inch diameter double key slot hanger holes located on the back of unit The hanger holes allow maximum shank size of amp inch diameter threaded rods or lag screws installer provides 1 Prepare wall openings for recessed units Reference unit submittal for each unit size dimensions When installing vertical units consideration should be given for units with an outside air intake 2 If the unit has leveling legs adjust them correctly to level unit 3 Mark the position of the keyslot hanger holes on the wall according to the dimensions given in the Dimensions amp Weights section for each unit model and size Align the hole locations evenly 4 Insert the threaded rods or lag screws in the wall before setting the unit in place 5 Remove the front panel cabinet unit only by lifting it upward 6 Position the hanger holes located on t
72. aintenance Table M D 3 Fan outputs do not energize Probable Cause Explanation Random start After power up the controller always observes a random start that varies observed between 0 and 25 seconds The controller remains off until the random start time expires Power up control wait When power up control wait is enabled non zero time the controller remains off until one of two conditions occurs 1 The controller exits power up control wait once it receives communicated information 2 The controller exits power up control wait once the power up control wait time expires Cycling fan operation When the fan mode switch is in the auto postion the unit fan cycles off when there is no call for heating or cooling The heating cooling sources cycle on oroff periodically with the unit fan to match the capacity according to pulse width modulation PWM logic Unoccupied operation The fan cycles with capacity when the unit is in unoccupied mode This occurs even if the unit is in continuous fan operation While unoccupied the fan cycleson or off with heating cooling to provide varying amounts of heating or cooling to the space to match the capacity according to pulse width modulation PWM logic Fan mode off When using the local fan mode switch to determine the fan operation the off position controls the unit fan to off Requested mode off Itis possible to communicate the operating mode such as off
73. allation Fresh Air Opening Locations Horizontal Units Models C D and E B OUTSIDE AIR 15 8 OPENING BACK 15 8 HORIZONTAL CONCEALED AND RECESSED OUTSIDE AIR OUTSIDE AIR OPENING TOP r 215 16 OPENING TOP SIDE VIEW KEYSLOT HANGER HOLES TOP VIEW SIDE VIEW B 2 HORIZONTAL 15 8 OUTSIDEAIR 15 8 CABINET OPENING BACK OUTSIDE AIR 2 15 16 OUTSIDE AIR OPENING TOP OPENING TOP KEYSLOT HANGER HOLES Fresh Air Opening Dimensions Horizontal Units Unit Size 02 03 04 06 08 10 12 1 6 7 2 85 35 5707 15936 2 2 2 11 Bhe 3 8 A 5 3 he 24 1 5 8 OUTSIDE AIR OPENING BACK 11 16 gi r Lo OUTSIDE AIR OPENING BACK 11 16 3 UNT SVXO7A EN Fresh Air Opening Locations Vertical Units Models A B F amp J OUTSIDE AIR OPENING BACK 15 8 Installation VERTICAL CONCEALED AND RECESSED KEYSLOT HANGER HOLES OUTSIDE AIR OPENING BACK A OUTSIDE AIR OPENING BOTTOM B A OUTSIDE AIR OPENING BACK 1 5 8 OUTSIDE AIR OPENING BACK 2 15 16 FRONT VIEW VERTICAL CABINET AND SLOPE TOP 15 8 WALL HUNG KEYSLOT HANGER HOLES 2 15 16 A OUTSIDE AIR OPENING BOTTOM UNT SVXO7A E
74. allation of Air Conditioning and Ventilating Systems NFPA 90A and 90B Install all air ducts according to the National Fire Protection Association standards for the Installation of Air Conditioning and Ventilation Systems other than Residence Type NFPA 90A and Residence Type Warm Air Heating and Air Conditioning Systems NFPA 90B WARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury units airflow configuration varies dependent on the model and options ordered A one inch duct collar is provided on units with a ducted return and or discharge to attach ductwork to the unit Trane recommends using galvanized sheet metal ductwork with fan coil and cabinet heater units Slide the sheetmetal duct over the duct collar flange of the unit seal the joint and fasten with sheetmetal screws 30 Installation Note Do not run scr
75. at Off Discharge air temp failure off Valves Closed Fresh air damper Closed electric heat Off Baseboard heat Off Fresh air temp failure On Valves Enabled Fresh air damper Minimum position electric heat Enabled Baseboard heat Enabled Relative humidity failure On Valves Enabled Fresh air damper Enabled electric heat Enabled Baseboard heat Enabl Generic 4 20ma failure On Valves Enabled Fresh air damper Enabled electric heat Enabled Baseboard heat Enabled CO Input failure On Valves Enabled Fresh air damper Enabled electric heat Enabled Baseboard heat Enabled Maintenance required On Valves Enabled Fresh air damper Enabled electric heat Enabled Baseboard heat Enabled Local fan mode failure On Valves Enabled Fresh air damper Enabled Electric Heat Enabled Baseboard heat Enabled Local setpoint failure On Valves Enabled Fresh air damper Enabled electric heat Enabled Baseboard heat Enabled Invalid unit configuration off Valves Disabled Fresh air damper Disabled electric heat Disabled Baseboard heat Disabled Normal power up On Valves Enabled Fresh air damper Enabled Electric heat Enabled Note 1 The generic binary output TB4 1 4 2 state is unaffected by all unit diagnostics Note 2 When the entering water temperature is required but not present the Tracer ZN520 controller generates a diagnostic to indicate the sensor loss condition The controller automatically clears the diagnostic once a valid entering water
76. ater temperature 40 to 212 F 40 to 100 C 13 2 analog ground NA analog input 2 133 discharge air temperature 40 to 212 F 40 to 100 C 13 4 Analog ground NA analog input 3 135 fresh air temp generic temp 40 to 212 F 40 to 100 C 13 6 Analog ground NA analog input 4 3 7 universal input 0 100 generic 4 20ma 0 100 humidity 0 2000ppm 138 analog ground NA ground 13 9 analog ground NA Notes 1 The zone sensor entering water temperature sensor discharge air sensor and the outside air temperature sensor are 10KW thermistors 2 Zone sensor Wall mounted sensors include a thermistor soldered to the 5 circuit board Unit mounted sensors include a return air sensor in the units return air stream 3 Changeover units include an entering water temperature sensor UNT SVXO7A EN Zone Sensor The Tracer ZN520 controller accepts the following zone sensor module inputs Space temperature measurement thermistor Local setpoint either internal or external on the zone sensor module Fan switch Timed override On and Cancel timed override Communication jack Space Temperature Measurement Trane zone sensors use 10kW thermistor to measure the space temperature Typically zone sensors are wall mounted in the room and indude a space temperature thermistor As an option the zone sensor can be unit mounted with a separate space temperature thermistor located in the unit
77. be a mechanical connection that allows easy removal of the auxiliary drain pan when servicing the piping end pocket UNT SVXO7A EN Installation a D 3 Slidethe copper pipe over the drain pan nipple and tighten the collar on the pipe with a hose clamp installer supplied Maintain a continuous drain line pitch of one inch per ten feet of drain line run to provide adequate condensate drainage Extend the drain line straight from the drain pan a minimum distance of six inches before making any turns The installer must provide proper support for the drain line to prevent undue stress on the auxiliary drain pan Install a secondary overflow drain line if necessary by punching out the overflow drain nipple on the auxiliary drain pan Next place a 3 inside diameter flexible plastic tube over the nipple and secure with a field supplied hose clamp Note The installer is responsible for adequately insulating field piping See the External Insulating Requirements section for more information Condensate Overflow Detection Device The condensate overflow detection device is an option on fan coil units with either a Tracer 7 010 ZN510 ZN520 the customer supplied control interface The float switch mounting bracket and coiled leads ship attached inside the piping end pocket of the unit Install tne switch by placing the hole or slot in the bracket over the condensate overflow drain of the auxiliar
78. ble through Trane BAS Buying Group Accessories catalog Note Communication link wiring is a shielded twisted pair of wire and must comply with applicable electrical codes Follow these general guidelines when installing communication wiring on units with a Tracer ZN510 or ZN520 controller Maintain a maximum 5000 ft aggregate run Install all communication wiring in accordance with the NEC and all local codes Solder the conductors and insulate tape the joint sufficiently when splicing communication wire Do not use wire nuts to make the splice Do not pass communication wiring between buildings because the unit will assume different ground potentials Do notrun power in the same conduit or wire bundle with communication link wiring Note You do not need to observe polarity for LonTalk communication links Device Addressing LonTalk devices are given a unique address by the manufacturer This address is called a Neuron ID Each Tracer ZN510 and ZN520 controller can be identified by its unique Neuron ID which is printed on a label on the controller s logic board The Neuron ID is also displayed when communication is established using Tracer Summit or Rover service tool The Neuron ID format is 00 01 64 1C 2B 00 Wire Characteristics Controller communication4link wiring must be low capacitance 18 gage shielded twisted pair with stranded tinned copper conductors For daisy chain configurations limi
79. closed failed open to occupied minimum position open to occuied standby minimum position closed present and economizing feasible economizing minimum postion to 100 economizing between occupied standby open amp economizing when minimum position to 10096 unit is operating closed otherwise present amp economizing not feasible open to occupied minimum position open to occupied standby minimum position closed UNT SVXO7A EN 55 e TRANE Fan Start on High Speed On a transition from off to any other fan speed the Tracer ZN520 controller automatically starts the fan on high speed and runs the fan at high speed for 0 5 seconds This provides the ample torque required to start all fan motors from the off position Entering Water Temperature Sampling Function Only units using the main hydronic coil for both heating and cooling 2 pipe changeover and 4 pipe changeover units use the entering water temperature sampling function Two pipe changeover and 4 pipe changeover applications allow the main coil to be used for heating and for cooling therefore these applications require an entering water temperature sensor When three way valves are ordered with a Tracer ZN520 control the controller is factory configured to disable the entering water temperature sampling function and the entering water sensor is mounted in the proper location Disabling entering water temperature sampling eliminates unnecessary water flow through the
80. e familiar with the procedures WARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could resultin death or serious injury Receiving Inspect unit and components for shipping damage File damage claims immediately with the delivering carrier Check unit for missing material Look for ship with options and sensors that may be packaged separately from the main unit See the Receiving and Handling section Check nameplate unit data so that it matches the sales order requirements Unit Location 1 Ensure the unit location is adequate for unit dimensions ductwork piping and electrical connections 2 Ensure access and maintenance clearances around the unit are adequate Unit Mounting 1 Ensure unit is installed level Component Overview 1 Ensure the fan rotates freely in the correct direction 2 Ensure all unit access panels and air grilles a
81. e operating instructions UNT SVXO7A EN e TRANE mechanical Installation requirements 5 Adjust the circuit setter valve by turning the valve stem until the appropriate pressure drop is achieved 6 After achieving the proper setting slightly loosen the two socket head cap screws and rotate the memory stop around until it touches the back side of the indicator Then tighten the screws to securely set the open memory position The memory stop indicates the last set open position 7 If using a three way valve close the control valve to the coil with the differential pressure meter still connected This will divert flow to the bypass side of a three way valve Adjust the balancing fitting to obtain the same pressure drop across the circuit setter valve as in step two when the control valve was open to the coil gt Figure HMR 9 Automatic circuit setter valve Figure MR 10 Automatic circuit setter valve Figure MR 8 Manual circuit setter valve 33 e TRANE Installation Note Instructions for using this chart are on the previous page For the manual circuit setter provided with the fan coil or Force Flo use the line for reference 60 45 30 15 M 600 500 DIFFERENTIAL PRE
82. e unit nameplate also identifies the serial number sales order number and installation and operating specifications Following is a complete description of the fan coil model number Each digit in the model number has a corresponding code that identifies specific unit options Factory assembled installed and tested piping package with IAQ drain pan to collect condensate fiberglass Easy filter access without front panel removal Figure 1 UniTrane fan coil unit components Vertical cabinet model is shown 4 Damper allows up to 100 fresh air UNT SVXO7A EN Installation e TRANE 2 0000 1000 A A 000 0000400 Model Number Desaiption FC B B 0200 1 C 1 0 1 5 10 15 Digits 1 2 unit type FC fan coil FF force flo Digit 3 cabinet type A vertical concealed B vertical cabinet horizontal concealed horizontal cabinet horizontal recessed F vertical wall hung H vertical recessed J vertical cabinet slope top K low vertical concealed L low vertical cabinet M inverted vertical cabinet N inverted vertical recessed Digit 4 development sequence Digits 5 6 7 unit size 020 040 080 030 060 100 120 Digit 8 1 115 60 1 4 230 60 1 2 208 60 1 9 220 501 3 277 60 1 Digit 9 piping system placement A no piping RH w o aux pan B no piping LH w o aux pan C no piping RH w aux pan D no
83. eating or cooling The second state varies applies when there is a call for heating or cooling The heat default is factory configured for low fan speed and the cool default is medium Table O SO 6 Valid operating range and factory default setpoints setpoint parameter default setting valid operating range unoccupied cooling setpoint 85 F 40 to 115 F occupied cooling setpoint 74 F 40 to 115 F occupied heating setpoint 71 F 40to 115 F unoccupied heating setpoint 60 F 40to 115 F cooling setpoint high limit 110 F 40to 115 cooling setpoint low limit 40 F 40to 115 heating setpoint high limit 105 F 40to 115 F heating setpoint low limit 40 F 40to 115 F power up control wait 0 sec Oto 240 sec UNT SVXO7A EN Tracer 2520 Sequence of Operation The Tracer ZN520 operates the fan in the following modes 1 occupied 2 unoccupied 3 occupied standby 4 occupied bypass 5 Tracer Summit with supply fan contro Occupied When the controller is in the occupied mode the unit attempts to maintain the space temperature at the active occupied heating or cooling setpoint based on the measured space temperature the discharge air temperature the active setpoint and the proportional integral control algorithm The modulating control algorithm used when occupied or in occupied standby is described in the following sections Additional information related to the handling of the
84. eel hub During re assembly make certain the fan wheel s is are properly centered in the fan housing to preventthe fan wheel from contacting the housing on either side After the unit has been re as sembled verify that no unusual noise or vibration is present at startup Control Device Replacement To order control components such as relays contactors transformers low temperature detection devices condensate overflow detection devices differential pressure switches sensors control valves and actuators contact the local Trane Service Parts Center To order the Trane parts center will need the unit model number which can be found on the unit nameplate the serial number and the part name or ID 69 e TRANE 70 Maintenance Periodic Maintenance Checklists Monthly Checklist The following check list provides the recommended maintenance schedule to keep the unit running efficiently WARNING Live Electrical Components During installation testing servicing and troubleshooting this equipment it may be necessary to work with live electrical components Have a qualified licensed electrician or other individual who is properly trained in handling live electrical components perform these tasks Failure to follow all electrical components could result in death or serious injury WARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and disc
85. el zero tolerance in both horizontal axis for proper operation Do not use the coil or drain pan as the reference point because the coil may be pitched and the drain pan has an inherent positive slope to provide proper drainage 4 Verify that wall and ceiling openins are properly cut per the unit submittals 0 5 Verify that installation of horizontal concealed units meets the national Fire Protection Association Standard 90A or 90B concerning the use of concealed ceiling spaces as return air plenums Verify correct ceiling opening dimensions on unit submittals Secure the unit and any accessory items properly to the wall or ceiling support rods 6 Complete all piping connections correctly 7 Check field sweat connections for leaks and tighten the valve stem packing and piping pkg unions if necessary 0 8 Install the auxiliary drain pan properly under piping package on fan coil units 9 Complete condensate drain line connections on fan coil units 10 Pitch condensate drain line away from fan coil one inch drop per ten feet of pipe 11 Install automatic changeover sensor option on the supply water line if applicable L1 12 Install automatic electric heat lockout switch option on the supply water line if applicable 013 Install condensate overflow switch option correctly on the auxiliary drain pan if applicable L1 14 Ensure the low temperature detection device option is co
86. entative of the damage and arrange for repair Have the carrier inspect the damage before making any repairs to the unit Compare the electrical data on the unit nameplate with the ordering and shipping information to verify the correct unit is received J obsite Storage This unit is intended for indoor use only Store the unit indoors to protect the unit from damage due to the elements If indoor storage is not possible make the following provisions for outdoor storage 1 Placethe unit s on a dry surface or raised off the ground to assure adequate air circulation beneath unit and to assure that no portion of the unit contacts standing water at any time 2 Cover the entire unit with a canvas tarp only Do not use clear black or plastic tarps as they may cause excessive moisture condensation and equipment damage Installation Preparation Before installing the unit consider the following unit location recommendations to ensure proper unit operation 1 Clearances Allow adequate service and code clearances as recommended in Service Access section Position the unit and skid assembly in its final location 2 Structural support Ensure the structural support is strong enough to adequately supportthe unit The installer is responsible for supply support rods for installation of ceiling units 3 Level Verify the floor or foundation is level Shim or repair as necessary To ensure proper unit operation install the un
87. er to the unit operating voltage listed on the unit wiring schematic submittal or nameplate Reference the wiring sche matic for specific wiring connections CAUTION Use Copper Conductors Only Unit terminals are not designed to accept other type conductors Failure to use copper conductors may result in equipment damage 36 Installation Note All field wiring should conform to NEC and all applicable state and local code requirements The control pane box is always on the end opposite the piping connections Access the control box by removing the two screws that secure the front cover This will allow the panel to be removed to provide access to the electrical components WARNING Hazardous Electrical Shorts Insulate all power wire from sheet metal ground Failure to do so may cause electrical shorts that could resultin death or serious injury If the unit does not have a disconnect switch the power leads and capped ground wire are inside the control panel If the unit has a disconnect switch the power leads are wired to the junction box switch on the control panel Pull the capped ground wire into the junction box Electrical Grounding Restrictions All sensor and input circuits are normally at or near ground common potential When wiring sensors and other input devices to the Tracer controller avoid creating ground loops with grounded conductors extemal to the unit control circuit Gr
88. es and application When the unit configuration does not match the actual end device the electric heat may not work properly No power to the controller If the controller does not have power electric heat does not operate For the controller to operate normally 24VAC input voltage must be applied Whenthe green LED is off continuously the controller does not have sufficient power or has failed Unit Wiring The wiring between the controller outputs and the electric heat contacts must be present and correct for normal electric heat operation Refer to the typicalunit wiring diagrams in the Appendix of this manual Table M D 7 Fresh Air Damper Stays Open Probable Cause Explanation Normal operation The controller opens and closes the fresh air damper based on the controller s occupancy mode and fan status Normally the fresh air damper is open during moccupied mode when the fan is running and closed during unoccupied mode Manual output test The controller includes a manual output test sequence that verifies analog and binary output operation and associated output wiring However based on thecurrent step in the test sequence the fresh air damper may not be open Refer to the Manual Output Test section Unit configuration The controller must be properly configured based on the actual installed end devices and application When the unit configuration does not match the actualend device t
89. es not have sufficient poweror the controller has failed Unit wiring The wiring between the controller outputs and the valve s must be present and correct for normal valve operation Refer to the typical unit wiring diagrams in the Appendix of this manual Table M D 5 Valves Stay Open Probable Cause Explanation Normal operation The controller opens and closes the valves to meet the unit capacity requirements Valve override The controller can communicate a valve override request to affect the valve operation Manual output test The controller includes a manual output test sequence that verifies analog and binary output operation and the associated wiring However based thecurrent step in the test sequence the valves may be open Refer to the M anual Output Test section Diagnostic present A specific list of diagnostics affects valve operation For more information see the Diagnostics section Sampling logic The controller includes entering water temperature sampling logic that automatically invokes during 2 pipe or 4 pipe changeover to determine if the entering water temperature is correct for the unit operating mode Refer to the Entering Water Temperature Sampling section Unit configuration The controller must be properly configured based on the actual installed end devices and application When the unit configuration does not match the actual end device the va
90. ess of the control valve position Note The maximum length of the automatic changeover wire cannot exceed ten feet from the control panel If the sensor extends beyond the unit chassis use shielded conductors to eliminate radio frequency interference RFI Figure MR 2 Condensate float switch installed in vertical auxilliary drain pan 31 Figure I MR 3 Attach the changeover sensor to the entering water pipe as shown for changeover to work properly Figure MR 4 Close up view of the changeover sensor Figure F MR 5 Manual coil air vent with set screw Figure I MR 6 Manual air vent with Shrader fitting 32 Installation mechanical requirements Automatic Electric Heat Lockout Switch Two pipe fan coil units with auxiliary electric heat have an automatic electric heat lockout switch that disengages the electric heat when hydronic heat enables If the unit has a factory piping package and electric heat the factory attaches the switch to the supply water pipe When the lockout switch detects the supply water temperature above 95 F it disengages the electric heat This eliminates electric heat and hydronic heat working simultaneously If the fan coil unit does not have a factory piping package the switch and coiled lead wires ship inside the piping side end panel The installer should position the lockout switch on the supply water line of the unit by sliding its spring connecto
91. ews through the removable front panel on concealed units Ductwork Recommendations Follow the general recommendations listed below when installing ductwork for the unit 1 Discharge ductwork should run in a straight line unchanged in size or direction for minimum equivalent distance of three fan diameters from the unit approximately 20 inches 2 When making duct turns and transitions avoid sharp turns and use proportional splits tuming vanes and air scoops when necessary 3 When possible construct and orient supply ductwork tums in the same direction as the fan rotation Piping Considerations Hydronic Coil Piping Before installing field piping to the coil consider the following coil connections inch or inch nominal female copper connections The supply and retum piping should not interfere with the auxiliary drain pan or condensate line See Connecting the Condensate Drain section for more detailed information The installer must provide adequate piping system filtration and water treatment Exterior condensate may be an issue fan coils only if field piping does not have a control valve Refer to the supply and retum header locations in the Dimensions and Weights section Note When using a field supplied piping package in a fan coil unit allow sufficient room to install the auxiliary drain pan In addition piping package must not extend over edges of aux
92. f Operation Tracer ZNO10 and ZN510 Note this section applies only to units with a Tracer ZNO10 ZN510 controller Power Up Sequence When 24 VAC power is initially applied to the Tracer 24010 or 24510 the following sequence occurs 1 All outputs are controlled off 2 Tracer 24010 and 24510 reads all input values to detemine initial values 3 The random start time 0 25 seconds expires 4 Normal operation begins Entering Water Temperature Sampling Function Both Tracer ZN010 and ZN510 use an entering water temperature sampling function to testfor the correct water temperature for the unit operating mode For all applications not involving changeover the water temperature does not affect unit operation The entering water temperature sam pling function opens the main hydronic valve waits no more than three minutes to allow the water temperature to stabilize then measures the entering water temperature to see if the correct water temperature is available The entering water must be five degrees or more above the space temperature to allow hydronic heating and five degrees or more below the space temperature to allow hydronic cooling If the correct water temperature is available the unit begins normal heating or cooling operation If the measured entering water temperature is too low or high the controller closes the valve and waits 60 minutes before attempting to sample the entering water Reference T
93. f when the TEST button is pressed To begin the manual output test mode press and hold the TEST button turning off the green LED for at least two seconds The green LED will begin to blink indicating the controller is in test mode Table M T L Test sequence for 1 heat 1 cool configurations steps fan cool output heat output damper 1 3 1 5 1 off off off off closed 2 fan High high off off closed 3 fan medium medium off off closed 4 fan low low off off closed 5 cool high on off closed 6 heat high off on closed 7 fresh air high off off open damper 3 8 exit 2 Notes 1 At the beginning of step 2 the controller attempts to clear all diagnostics 2 For all 1 heat 1 cool applications including 2 pipe changeover BOP4 energizes in the cooling test stage and BOP5 energizes in the heat test stage This occurs even though during normal 2 pipe changeover operation BOP4 controls the unit valve for both cooling and heating 2 After the Fresh Air Damper step the test sequence performs the Exit step This initiates a reset and attempts to return the controller to normal operation 3 The fresh air damper BOP6 only energizes during this step if binary output 6 has been configured as afresh air damper UNT SVXO7A EN Maintenance Procedures Perform the following maintenance procedures to ensure proper unit operation WARNING Live Electrical Com
94. fter an automatic diagnostic reset the controller must be manually reset Other possible methods of resetting diagnostics are described in the sections that follow Manual Output Test To verify proper end device operation press the controller s Test button This exercise will verify all outputs in predefined sequence the first of which will attempt to reset the controller diagnostics if any are present Cyding Power to the Controller After removing and reapplying the 24 VAC power from the board the unit cycles through a power up sequence By default the controller attempts to reset all diagnostics present at power up Diagnostics present at power up and those that occur after power up are handled according to Table M D 2 Using Trane s Service Tool Rover Rover Trane s service tool can reset diagnostics present in the controller and troubleshoot the unit For more information refer to the Trane publication EMTX SVXOID EN Rover Installation Operation and Programming Guide Diagnostic Reset Any device that can communicate the network variable nviRequest enumeration clear alarm can reset diagnostics in the Tracer ZN520 controller The controller also attempts to reset diagnostics whenever power is Cyding the Fan Switch Cycle the fan speed switch from Off to any speed and the controller resets all diagnostics Diagnostics may recur immediately if the problem still exists 61 e TRANE M
95. h input 4821 to 4919 W off 2297 to 2342 W auto 10593 to 10807 W low 13177 to 13443 W medium 15137 to 16463 W high ground 6 analog ground NA analog input 1 3 1 entering water temperature 40 to 212 F 40 to 100 C 13 2 analog ground NA analog input 2 3 3 discharge air temperature 40 to 212 F 40 to 100 C 134 Analog ground NA analog input 3 135 fresh air temp generic temp 40 to 212 F 40 to 100 C 13 6 Analog ground NA analog input 4 3 7 universal input 0 100 generic 4 20ma 0 100 humidity 0 2000ppm 138 analog ground NA ground 139 analog ground NA Notes 1 The zone sensor entering water temperature sensor discharge air sensor and the outside air temperature sensor are 10KQ thermistors 2 Zone sensor Wall mounted sensors include a thermistor soldered to the sensor s circuit board Unit mounted sensors include a return air sensor in the units return air stream 3 Changeover units include an entering water temperature sensor Table O SO 15 Analog inputs description terminals function range zone TB31 space temperature input 5 to 122 F 15 to 50 C ground TB3 2 analog ground NA set TB33 setpoint input 40 to 115 F 4 4 to 46 1 C fan B34 fan switch input 4821 to 4919 W off 2297 to 2342 W auto 10593 to 10807 W low 13177 to 13443 W medium 15137 to 16463 W high ground 6 analog ground NA analog input 1 3 1 entering w
96. harge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury Monthly Maintenance Inspect unit air filters Clean or replace if airflow is blocked or if filters are dirty 2 Check the main and auxiliary drain pans on fan coil units to be sure the pans are clean and do not impede the condensate flow through the drain line Annual Maintenance Check and tighten all set screws bolts locking collars and sheaves 1 Inspect the unit cabinetry for chips or corrosion Clean or repair to provide unit protection 2 Inspect the fan wheel and housing for damage Rotate the fan wheel manually to be sure movement iS not blocked by obstructions 3 Inspect the coil fins for excessive dirt or damage Remove dirt and straighten fins 4 Clean and tighten all electrical connections 5 Inspect the strainer option for debris trapped in the filter screen UNT SVXO7A EN Fan Speed Switch Maintenance e TRANE pical wiring diagram
97. he back of the unit over the rod or lag screw heads pushing the unit downward to properly position 7 Complete piping and wiring connections in addition to any necessary ductwork to the unit as instructed in the following sections Ensure that the auxiliary drain pan is in position on fan coil units 8 Install the front panel before starting the unit On cabinet units replace the front panel by aligning the bottom tabs on the unit with the respective slots on the panel UNT SVXO7A EN Installation bottom Slide the front panel down onto thetabs while holding the panel close as possible to the cabinet While the bottom tabs are engaged slide the front panel upward enough to allow the top engaging edge of the front panel to lap over the engaging edge of the unit This should allow the panel to drop down and lock into position On recessed units install the front panel by aligning and locking together the interlocking support channel of the panel and unit While holding the panel against the unit tighten the screws atthe top of the panel until itfits tight against the unit s front Do not over tighten the screws CAUTION Motor Overload All unit panels and filters must be in place prior to unit startup Failure to have panels and filters in place may cause motor overload Horizontal Units Install horizontal units suspended from the ceiling using the four 5 s inch diameter double key slot hanger holes loca
98. he damper may not work correctly Unit wiring The wiring between the controller outputs and the fresh air damper must be present and correct for normal damper operation Refer to the typical unit wiringdiagrams in the Appendix of this manual Table M D 8 Fresh Air Damper Stays Closed Probable Cause Explanation Normal operation The controller opens and closes the fresh air damper based on the controller s occupancy mode and fan status Normally the fresh air damper is open during moccupied mode when the fan is running and closed during unoccupied mode Warmup and cooldown The controller includes both a warmup and cooldown sequence to keep the fresh air damper closed during the transition from unoccupied to occupied This is an attempt to bring the space under control as quickly as possible Requested mode off It is possible to communicate the operating mode such as off heat cool to the controller When off is communicated to the controller the unit closes the fresh air damper Manual output test The controller includes a manual output test sequence that verifies analog and binary output operation and associated output wiring However based on thecurrent step in the test sequence the fresh air damper may not be open Refer to the Manual Output Test section Diagnostic present A specific list of diagnostics effects fresh air damper operation For more information see the Diagnostics section
99. he economizer outdoor air damper is never used as a source of heating Instead the economizer damper when present is only used for ventilation therefore the damper is at the occupied minimum position in the occupied mode The damper control is primarily associ ated with occupied fan operation UNT SVXO7A EN Fan Mode Operation For multiple fan speed applications the Tracer ZN520 controller offers additional fan configuration flexibility Separate default fan speeds for heating and cooling modes can be configured The fan runs continuously for requested speeds off high medium or low When the fan mode switch is in the Auto position ora hardwired fan mode input does not exist the fan operates at the default configured speed See Table 21 for default fan configuration for heat and cool mode During unoccupied mode the fan cycles between high speed and off with heating and cooling fan modes If the requested speed is off the fan always remains off During dehumidification when the fan is on Auto the fan speed can switch depending on the error Fan speed increases as the space temperature rises above the active cooling setpoint Additional flexibility built into the control ler allows you to enable or disable the local fan switch input The fan mode request can be either hardwired or communicated to the controller When both are present the communicated request has priority over the hardwired input See Tables 22 23
100. hes are pre set and locked in place with lock tight The switch settings can be broken if field modifications are needed However switches must be properly set for the unit to operate safely and properly See Figure O GI 1 Manual Fan Mode Switch The manual fan mode switch is available with a four position switch off hi med lo allows manual fan mode selection and is available unit or wall mounted See Figure O GI 2 UNT SVXO7A EN e TRANE general information Operation The unit mounted option operates on line voltage The wall mounted option is low voltage and has three 24 volt relays using a factory wired transformer and relays to control the fan motor Tracer ZNO10 amp ZN510 Tracer ZNO10 is a stand alone device that controls fan coils and cabinet heaters Tracer ZN510 can be stand alone or use peer to peer communications The controller is easily accessible in the control end panel for service The control end panel is on the end of the unit opposite the piping Reference Figure O GI 3 Figure Tracer ZNO10 board 49 e TRANE 50 Operation Fan Mode Switch Operation off Fan is turned off two position damper option spring retums closed Hi Med Lo Fan runs continuously at the selected speed The two position damper option opens to an adjustable mechanical stop position Tracer ZN010 amp 234510 Operation off Fan is off control valves and fresh air damper opti
101. ia x Width cm 2 6 31x6 5 16x6 5 Motor Quantity 1 1 1 1 1 2 2 Filter Data 1 TA and Pl Media Quantity 1 1 1 1 1 1 1 Size In cm 87 s x 19 8 878 x 19 8 87 a x 2418 87 2 x 335 87 8 4218 878 x 6118 878 6118 23 49 23 49 23 61 23 85 23 107 23 155 23 155 T Fresh Air Filter only on cabinet styles D and H with bottom retum and fresh opening Quantity 1 1 1 1 1 1 1 Size In 51b 19 8 51 19 8 54 22 54 335 8 51 4218 51b x 61 8 51b x 61 8 14 x 49 14 x 49 14 x 61 14 x 85 14 x 107 14x 156 14 x 156 Table 2 Low vertical fan coil component data unit size 03 04 06 Coil Data Face Area Ft cm 1 1 1020 1 6 1490 2 1 1950 LxDxH In cm 2 Row 20x1 7x8 51x4x20 29 5x1 7x8 75x4x20 38x1 7x8 97x4x20 3Row 20x2 6x8 51x7x20 29 5x2 6x8 75x7x20 38x2 6x8 97x7x20 Volume Gal Liters 1 Row Heat 08 30 11 42 114 53 2 Row 15 57 22 83 28 1 06 3Row 23 87 33 1 25 42 1 59 Fins Ft 2 Row 144 4 7 144 4 7 144 4 7 3Row 144 4 7 144 4 7 144 4 7 Motor Data Fan Quantity 1 1 1 Size Dia x Width cm 5x23 13x59 5x32 13x83 5x41 13x105 Motor Quantity 1 1 1 Filter Data T 25cm Quantity 1 1 1 Size 87 247 23x61 87 ex33 s 23x85 87 421 23x107 UNT SVXO7A EN Installation model B vertical cabinet
102. iliary drain pan Connecting field piping to coil 1 Remove the auxiliary drain pan if it is in place to prevent exposureto dripping solder or excessive temperatures 2 Slide inch sweat connection coupling installer provided onto the coil headers Note For vertical fan coil units push the main condensate drain hose and overflow condensate drain hose through the inside of the chassis end panel to prevent them from getting bumed when making sweat connections Be sure to pull the hoses back through and route to the auxiliary drain pan when the end panel has cooled 3 Solder the joint using bridgit lead free solder ASTM B32 89 to provide watertight connection Avoid overheating factory soldered joints when soldering field connections to the coil to prevent leakage from occurring 4 Insulate all piping to coil connections as necessary after connections are complete Note Maintain a minimum distance of one foot between the reduction fitting for the 1 inch diameter line and the fan coil unit piping connections 5 Install the optional auxiliary drain pan which ships in the accessory packet UNT SVXO7A EN Water Piping Connections to Factory Installed Piping Package Before installing water piping supply and return lines to factory piping package note the following items All piping connections are 5 4 nominal female copper connections eThe fan coil supply and ret
103. ing connections and unit style to help properly locate the unit in the floor plan If specified the unit will ship with tagging designated by the customer Receiving Checklist Complete the following checklist immediately after receiving unit shipment to detect possible shipping damage Inspect individual cartons before accepting Check for rattles bent carton corners or other visible indications of shipping damage 28 Installation If a unit appears damaged inspect it immediately before accepting the shipment Manually rotate the fan wheel to ensure it turns freely Make specific notations concerning the damage on the freight bill Do not refuse delivery Inspect the unit for concealed damage before itis stored and as soon as possible after delivery Report concealed damage to the freight line within the allotted time after delivery Check with the carrier for their allotted time to submit a claim Do not move damaged material from thereceiving location It is the receiver s responsibility to provide reasonable evidence that concealed damage did not occur after delivery Do not continue unpacking the shipment if it appears damaged Retain all internal packing cartons and crate Take photos of damaged material L1 Notify the carrier s terminal of the damage immediately by phone and mail Request an immediate joint inspection of the damage by the carrier and consignee L1 Notify your Trane repres
104. ing panel B keylock access door C locking panel amp keylockaccess door D leveling feet F locking panel w leveling feet G keylock panel keylock access door w leveling feet Digit 17 motor A free discharge B high static Digit 18 coil A 2row cooling heating B 3row cooling heating C 4row cooling heating D 2row cooling 1 row heating 2row cooling 2 row heating F 3row cooling 1row heating G 2row cooling only H 3row cooling only J cooling only K 2row cooling heating w elec heat 35 40 44 3row cooling heating w elec heat M 4row cooling heating w elec heat P 2row cooling heating w 1 row heat 2row cooling heating w 2 row heat 3row cooling heating w 1 row heat Digit 19 coil series 2 144 FPF Digit 20 air vent automatic air vent M manual air vent Digits 21 22 23 electric heat 208V derate 100 10 0 kW Digit 24 reheat 0 hot water coil A steam coil Digit 25 disconnect switch 0 D disconnect switch Digit 26 filter 0 1 1 throwaway filter 2 1 throwaway pleated media filter 3 1 throwaway qty 2 4 1 throwaway pltd media qty 2 5 1 throwaway qty 6 1 throwaway media qty 7 1 throwaway qty 4 8 1 throwaway pltd media qty 4 Digit 27 main control valve 0 none A 2 way 2 position NO 30 psig B 3 way
105. into the occupied standby mode when a communicated occupancy request is combined with the local hardwired binary input signal When the communicated occupancy request is unoccupied the occupancy binary input if present does not affect the controller s occupancy When the communicated occupancy request is occupied the controller uses the local occupancy binary inputto switch between the occupied and occupied standby modes During occupied standby mode the controller s economizer damper position goes to the economizer standby mini mum position The economizer standby minimum position can be changed using Rover service tool In the occupied standby mode the controller uses the occupied standby cooling and heating setpoints Because the occupied standby setpoints typically cover a wider range than the occupied setpoints the Tracer ZN520 controller reduces the demand for heating and cooling the space Also the outdoor air economizer damper uses the econo mizer standby minimum position to reduce the heating and cooling demands When no occupancy request is commu nicated the occupancy binary input switches the controller s operating mode between occupied and unoccupied When no communicated occupancy request exists the unit cannot switch to occupied standby mode Mode The controller can be placed in occupied bypass mode by either communicating an occupancy request of Bypass to the controller or by usi
106. ir opening dimensions RH PIPING 184 19 4 65 8 5 8 9 3 4 258 22 22 du s 1 1 SIDE VIEW S Nos eee FRONT pem i m PANEL 11 30 lt 7 I WALL TT TUN ON i I OPENING 12 1 i CONTROL eons BOX s 3 1 2 S I i le AR 1 I s FLOW lt 1 x FRONT OUTLET LOUVERS D II 61516 4 5 8 DIA m A l KEYSLOT HANGER HOLES WA OPENING Dimension D refers to the required E FRONT PANEL minimum distance between the finished floor and the bottom of the unit FRONT VIEW 2 X 4 JUNCTION BOX LH PIPING POWER WIRING 8 7 8 KO S OPTIONAL 415 16 i 1 E I I 415 16 E 5 1 11 I COIL CONNECTIONS pg ke 5 1 E 842 IS cwn a ANS RD ACC pg 1 3 3 8 i I FRONT SI 1 CONTROL n ACCESS 1 OPTIONAL e L 118 50 9 21 e TRANE Fan Coil Coil Connections Vertical Units Installation dimensions amp weights 83 16 RHR 55 16 5 47 8 RHS 43 8 CR VERTICAL CONCEALED VERTICAL RECESS
107. it level zero tolerance in both horizontal axes Failure to level the unit properly can result in condensate management problems such as standing water inside the unit 4 Condensate line amp piping Consider coil piping and condensate drain requirements Verify condensate line is continuously pitched 1 inch per 10 feet of condensate line run to adequately drain condensate 5 Wall amp ceiling openings Vertical recessed concealed units require wall ceiling openings Refer to submittal for specific dimensions before attempting to install Horizontal recessed concealed units must meet requirements of the National Fire Protection Association NFPA Standard 90A or 90B conceming the use of concealed ceiling spaces as return air plenums Refer to the submittal for specific dimensions of ceiling openings 6 Exterior Touch up painted panels if necessary If panels need paint sanding is not necessary However clean the surface of any oil grease or dirt residue so the paint will adhere Purchase factory approved touch up epoxy paint from your local Trane Service Parts Center and apply UNT SVXO7A EN Service Access Service access is available from the front on vertical units and from the bottom on horizontal units Cabinet and recessed units have removable front or bottom panels to allow access into the unit See Figure I PC 1 for recommended service and operating clearances Units have either right or left hand pipi
108. led 3 Remove the condensate overflow switch option from the auxiliary drain pan 4 Slide the pan horizontally towards the end ofthe large groove of the mounting slots in the chassis end panel and remove pan from unit See Figure M 2 Main Drai Figure M MP L When replacing the fan coil s main drain pan install it correctly under the z bar Main Drain Pan See Figure M MP 1 to replace main drain correctly Vertical Units To remove the main drain pan on vertical fan coil units disconnectthe dips holding the pan to the fanboard Disconnect the main and overflow drain hoses and slide pan forward to remove See Figure M MP 3 Horizontal Units To remove the main drain on horizontal fan coil unit peel the insulation from the edges of the pan s underside to access the mounting screws Remove the screws and lower the end of the drain pan closest to the control box Remove the drain spout by pulling itfrom the hole in the chassis end panel See Figure M 4 Note Do not operate the fan coil unit without the main and auxiliary drain pans in place to prevent condensate leakage aux drain pan attaches to these slots Figure M MP 2 Insert the auxiliary drain pan tabs into these slots in the fan coil s chassis end panel A horizontal unit shown 67 TRANE clips hold drain pan in place Figure M MP 3 To remove the main drain pan on vertical fan coil units disconnect the clips holding the
109. led disabled disabled disabled configuration failure low temp yes off open off closed detection maintenance yes enabled noaction no action required setpoint no enabled action noaction no action zone temp failure no off closed off closed Notes Priority Level Diagnostics are listed in order from highestto lowest priority The controller senses and records each diagnostic independently of other diagnostics It is possible to have multiple diagnostics present simultaneously The diagnostics affect unit operation according to priority level Latching A latching diagnostic requires a manual reset of the controller while a non latching diagnostic automatically resets when the input is present and valid Enabled End device is allowed to run if there is a call for it to run Disabled End device is notallowed to run even if there is a call for itto run No Action The diagnostic has no affect on the end device After the controller detects the first special diagnostic the unit waits 30 minutes before invoking the automatic diagnostic reset function The automatic diagnostic reset function clears the special diagnostic and attempts to restore the controller to normal operation The controller resumes normal operation until another diagnostic occurs Note The automatic diagnostic reset function does not operate during the manual output test sequence If a special diagnostic occurs within 24 hours a
110. lves may not work correctly Unit wiring The wiring between the controller outputs and the valve s must be present and correct for normal valve operation Refer to the typical unit wiring diagrams inthe Appendix of this manual 62 UNT SVXO7A EN e TRANE Maintenance Table M D 6 Electric Heat Not Operating Probable Cause Explanation Normal operation The controller cycles electric heat on and off to meet the unit capacity requirements Requested mode off Itis possible to communicate the operating mode such as off heat cool to the controller When off is communicated to the controller the units shuts off the electric heat Communicated disable Numerous communicated requests may disable electric heat including an auxiliary heat enable input and the heat cool mode input Depending on the state of the communicated request the unit may disable electric heat Manual output test The controller includes a manual output test sequence that verifies analog and binary output operation and associated output wiring However based on the current step in the test sequence the electric heat may not be on Refer to the Manual Output Test section Diagnostic present A specific list of diagnostics affects electric heat operation For more information see the Diagnostics section Unit configuration The controller must be properly configured based on the actual installed end devic
111. main coil when three way valves are used The controller invokes entering water temperature sampling only when the measured entering water temperature is too cool to heat or too warm to cool Entering water is cold enough to cool when it is five degrees below the mea sured space temperature Entering water 15 warm enough to heat when it is five degrees above the measured space temperature When the controller invokes the entering water temperature sampling function the unit opens the main hydronic valve for no more than three minutes before consid ering the measured entering water temperature An initial stabilization period is allowed to flush the coil This period is equal to 30 seconds plus gt valve stroke time Once this temperature Stabilization period has expired the controller compares the entering water temperature against the effective space temperature either hardwired or communicated to determine whether the entering water can be used for the desired heating or cooling If the water 56 Operation temperature is not usable for the desired mode the controller continues to com pare the entering water temperature against the effective space temperature for amaximum of three minutes The controller automatically disables the entering water temperature sampling and closes the main hydronic valve when the measured entering water exceeds the high entering water temperature limit 110 F When the e
112. model E horizontal recessed model K low vertical cabinet model J slope top cabinet model M inverted vertical cabinet Force Flo only 8 Bee Bee Be r model F wall hung cabinet model N inverted vertical recessed Force Flo only UNT SVXO7A EN e TRANE Installation Factory Installed Piping Packages Digits 27 28 Digit 29 Main Aux Basic A Circuit Setter B Control Valve BASIC SETTER VALVE None CONNECTION CONNECTION 0 Y CONNECTION PLY CONNECTION BALL VALVE BALL VALVE TYPICAL COL TYPICAL 2 OR AUXRIARY WATER VALVE 2 Way A C E G J L N O 3 Way B D F H K M P R DELUXE D None id ACTU 0 CONNECTION 2 Way A C E G J L N Q Es 3 OR AUXILLARY WATER VALVE BALL VALVE 3 Way B D F H K M P R Note This figure shows piping package components and basic arrangement It is not an accurate pictorial of what factory installed piping packages look like 5 9 e TRANE dimensions Installation amp weights Vertical Concealed Model A Vertical Concealed Unit Dimensions amp weights in Ibs
113. n and route the wires as shown in the wiring diagram Refer to the typical wiring diagram or to the unit specific diagram on the unit 3 Position the fan mode switch over the junction box with the two screws supplied Zone Sensor Installation Follow the procedure below to install the zone sensor module 1 Note the position of the setpoint adjustment knob and gently pry the adjustment knob from the cover using the blade of a small screwdriver 2 Insert the screwdriver blade behind the cover at the top of the module and carefully pry the cover away from the base SIDE VIEW BACK VIEW Figure 6 Wall mounted zone sensor dimensions 44 3 To install the zone sensor module without a junction box directly to the wall a Using the module base as a template mark the the rectangular cutout for the control wiring and module installation holes Ensure the base is level b Setthe base aside and make the cutout Then drill two 2 6 diameter holes approximately one inch deep Insert and fully seat the plastic anchors Pull the control wires through the cutout and attach the moduleto the wall using the screws provided 4 To install the zone sensor module to a standard junction box a Level and install a 2 x 4 junction box installer supplied vertically on the wall b Pull the control wires through the cutout Attach the module to the wall using the screws provided 5 Strip the
114. ncealed Model C BOX_ 2516 j 2 5 16 BACK INLET DUCT COLLAR 9 16 9 16 I 3 1 4 4 5 8 DIA KEYSLOT HANGER HOLES 2 JUNCTION BOX POWER WIRING SECONDARY DRAIN 8 7 8 5 CONNECTION FOR OPTIONA ____ ___________________ 3 8 ID TUBE seob J MAIN DRAIN CONNECTION FOR 7 8 OD COPPER TUBE AND CLAMP 1 DUCT COLLAR E 5 8 1 3 1 2 CONTROL fee BOX d 6 1 8 1213 4 SIDE VIEW INLET OPTIONS 1 2 1 8 3 3 4 23 16 2 FILTER DOOR USED M 1 3 4 134 WITH BACK DUCT 2777 24 COLLAR ONLY BACK INLET DUCT COLLAR 3 4 1 B 3 4 FRONT VIEW 2 3 3 16 RH PIPING BACK DUCT COLLAR Tem T T 2 2 3 6 6 15 16 D 6 3 8 BOTTOM TOE SPACE 11176 11116 41 5 8 4 5 8 DIA KEYSLOT 1 DUCT COLLAR HANGER HOLES 7 27 16 Su ire O I 87 8 P d 8 1 4 5 5 16 1 Ji ias 1916 que CONTROL I 1 7 8 POWER WIRING BACK ONLY 2 1 3 32 5 CONTROL WIRING BACK ONLY FRONT VIEW LH PIPING 1 1 8 COIL CONNECTIONS AUXILIARY DRAIN PAN CONTROL BOX 7 12 BOTTOM INLET 47 8 X F
115. nel with the fasteners provided Do not overtighten the fasteners Recessed units Reference the Dimensions amp Weights section for mounting locations and unit weights Follow the procedure below and reference Figure I IP 1 1 Insert the mounting bolts through the panel brackets of the trim ring and secure to the hanger holes on the unit Tighten the mounting bolts to pull the trim ring snug against the finished ceiling 2 Install the bottom panel by placing the hinged end on the trim ring hinged end always at the unit s return end 3 Adjust the expansion collar s inner duct only on fan coil units with a bottom return to ensure a tight fit against the insulation located on the perimeter of the bottom panel s retum louver 4 Close the s hook on each end of safety chain assembly Insert s hooks through holes in unit and door Close s hook on door 5 Insert retaining screws through bottom panel door and place retaining rings on screws 6 Swing the bottom panel upward into position Hook the safety chain to the bottom pane and the unit Tighten the panel to the unit with the fasteners provided 41 e TRANE CAUTION Unit Leveling All unit panels and filters must be in place prior to unit start up Failure to have panels and filters in place may cause motor overload 42 Installation HORIZONTAL RECESSED UNIT Cine DISCHARGE UNIT SHOWN TRIM RING ASSEMBLY 25
116. ng Reference piping locations by facing the front of the unit airflow discharges from the front The control panel is always on the end opposite the piping The fan board assembly and main drain pan are easily removable for cleaning See the Maintenance section for more details on servicing Pre installation Checklist Complete the following checklist before beginning unit installation Verify the unit size and tagging with the unit nameplate Make certain the floor or foundation is level solid and sufficient to support the unit and accessory weights See the Dimensions and Weights section Level or repair the floor before positioning the unit if necessary L1 Allow minimum recommended clearances for routine maintenance and service Refer to unit submittals for dimensions Allow one one half fan diameters above the unit before the discharge ductwork makes any turns UNT SVXO7A EN Installation considerations 24 12 both sides i model vertical concealed model B vertical cabinet model K low vertical concealed model L low vertical cabinet model H vertical recessed 12 both sides model C horizontal concealed model D horizontal cabinet model E horizontal recessed Figure 1 Recommended service clearances 29 e TRANE Duct Connections Install all air ducts according to National Fire Protection Association standards for the Inst
117. ng the timed override On button on the Trane zone sensor When the controller is in unoccupied mode you can press the On button on the zone sensor to place the controller into occupied bypass modefor the duration of the bypass time typically 120 minutes Occupancy Sources There are four ways to control the controller s occupancy Communicated request usually provided by the building automation system or peer device By pressing the zone sensor s timed override On button Occupancy binary input Default operation of the controller occupied mode A communicated request from a building automation system or another peer controller can change the controller s occupancy However if communication is lost the controller reverts to the default operating mode occupied after 15 minutes configurable specified by the receive heartbeat time if no local hardwired occupancy signal exists A communicated request can be pro vided to control the occupancy of the controller Typically the occupancy of the controller is determined by using time of day scheduling of the building automation system The result of the time of day schedule can then be communicated to the unit controller Tracer Summit with Supply Fan Control If the unitis communicating with Tracer Summit and the supply fan control programming point is configured for Tracer the factory configures as local Tracer Summit will control the fan regardless of
118. ntact your local office or e mail us at comfort trane com lt UL us Literature Order Number UNT SVXO7A EN File Number PL TD UNT SVXO7A EN 0405 Supersedes UNT IOM 6 04 00 Stocking Location LaCrosse Inland Trane has a policy of continuous product improvement and reserves the right to change design and specifications without notice Only qualified technicians should install and service equipment
119. ntering water temperature is warmer than 110 F the controller assumes the entering water temperature is hot because it is unlikely the coil would drift to a high temperature unless the actual loop temperature was very high If the entering water temperature is unusable too cool to heat or too warm to cool the controller closes the hydronic valve and waits 60 minutes before initializing another sampling If the controller determines the entering water temperature is valid for heating or cooling it resumes normal heating cooling control and effectively disables entering water temperature sampling until itis required Electric Heat Operation The Tracer ZN520 controller supports one or two stage electric heat operation for heating To control the space temperature electric heat is cycled to control the discharge air temperature The rate of cycling is dependent upon the load in the space and the temperature of the incoming fresh air from the economizer if any Two pipe changeover units with electric heat use the electric heat only when hot water is not available Manual Fresh Air Damper Units with the manual fresh air damper option ship with the damper in the closed position which is adjustable from zero to 10096 in 2596 increments To adjustthe position first remove the air filter to expose the damper stop screw on the control panel end Relocate the stop screw to the appropriate position Then loosen the stop scre
120. ntroller at a lower height may give the advantage of monitoring the temperature closer to the zone but it also exposes the controller to airflow obstructions Ensure that air flows freely over the controller Before beginning installation follow the wiring instructions below Also refer to the unit wiring schematic for specific wiring details and point connections Wiring Instructions Avoid mounting the controller in an area subject to the following conditions Dead spots such as behind doors or in corners that do not allow free air circulation Air drafts from stairwells outside doors or unsectioned hollow walls Radiant heat from the sun fireplaces appliances etc Airflow from adjacent zones or other units Unheated or uncooled spaces behind the controller such as outside walls or unoccupied spaces VIEW WITH COVER REMOVED NOT TO SCALE Installation Concealed pipes air ducts or chimneys in partition spaces behind the controller Fan Mode Switch Installation The fan mode switch ships loose inside the unit accessory bag Follow the steps below to install the fan mode switch Items needed 2 x 4electrical junction box 1 Remove the brown wire if not using a field supplied damper Remove the terminals cut and strip wires as required for installation 2 Level and position a 2 x 4 electrical junction box Follow the instructions given in the Interconnection Wiring sectio
121. on close Low air temperature detection option is still active Auto Fan Cyding Fan and fresh air damper cycle with control valve option to maintain setpoint temperature In cooling mode the fan cycles from off to medium and in heating mode it cycles from off to low When no heating or cooling is required the fan is off and the fresh air damper option closes Low Med High Continuous Fan Fan operates continuously while control valve option cycles to maintain setpoint temperature Fresh air damper option is open Tracer ZN520 Operation off Fan is off control valve options and fresh air damper options close The low air temperature detection option is still active Auto Fan speed control in the auto setting allows the modulating 3 wire floating point or 2 position control valve option and three speed fan to work cooperatively to meet precise capacity requirement while minimizing fan speed motor energy acoustics and valve position pump energy chilled water reset As the capacity requirement increases at low fan speed the water valve opens When the low fan speed capacity switch point is reached the fan switches to medium speed and the water valve repositions to maintain an equivalent capacity The reverse sequence takes place with a decrease in required capacity Low Med High Thefan runs continuously at the selected speed and the valve option will cycle to meet setpoint UNT SVXO7A EN Sequence o
122. ontroller CNT IOP 1 e Tracer ZN520 Unit Controller CN T SVXO4A EN eUniTrane Fan Coil Catalog UN T PRCOO1 EN Force Flo Cabinet Heater Catalog CAB PRCOO1 EN general information 00 01 4 2 dimensions amp weights 2 2 10 pre installation considerations 28 mechanical requirements 30 electrical requirements 36 installation procedure 41 pre startup requirements 46 general information seen nnn 49 sequence of operation 50 Maintenance 60 60 troubleshooting 2 20 64 maintenance procedures 2 67 typical wiring diagrams 71 e TRANE General UniTrane fan coil and Force Flo units are intended for single zone applications These units have load capabilities of 200 to 1200 cfm See Figure I GI 1for unit components Fan coil units are available as two pipe with or without electric heat one hydronic circuit or four pipe two hydronic circuits Force Flo units feature two pipe hydronic electric heat only or steam only Also these units feature
123. ound loops can affect the measurement accuracy of the controller CAUTION Equipment Damage Unit transformer IT1 provides power to fan coil unit only Field connections to the transformer IT1 may create immediate or premature unit component failure All input output circuits except isolated relay contacts and optically isolated inputs assume a grounded source either a ground wire atthe supply transformer to control panel chassis or an installer supplied ground Wall Mounted Control Interconnection Wiring installer must provide interconnec tion wiring to connect wall mounted devices such as a fan mode switch or zone sensor module Refer to the unit wiring schematic specific wiring details and point to point wiring connections Dashed lines indicate field wiring on the unit wiring schematics All interconnection wiring must conform to NEC Class 2 wiring requirements and any state and local requirements Refer to Table I ER 1 for the wire size range and maximum wiring distance for each device Recommendation Do not bundle or run interconnection wiring in parallel with or in the same conduit with any high voltage wires 110V or greater Exposure of interconnection wiring to high voltage wiring inductive loads or RF transmitters may cause radio frequency interference In addition improper separation may cause electrical noise problems Therefore use shielded wire Beldon 83559 83562 o
124. perature falls below the discharge air temperature control low limit all cooling capacity is at minimum and the discharge control loop deter mines a need to raise the discharge air temperature The controller then pro vides heating capacity to raise the discharge air temperature to its low limit Discharge Air Tempering The discharge air tempering function enables when cold outdoor air is brought in through the outdoor air damper causing the discharge air to fall below the discharge air temperature control low limit The controller exits the discharge air tempering function when heat capacity has been at 0 for five minutes Heating Operation During heating mode the TracerZN520 controller attempts to maintain the space temperature at the active heating setpoint Based on the occupancy mode of the controller the active heating setpoint 5 one of the following Occupied heating Occupied standby heating Unoccupied heating During dehumidification in the heating mode the controller adjusts the heating setpoint up to the cooling setpoint This reduces the relative humidity in the space with a minimum of energy usage The controller uses the measured space temperature the active heating setpoint and discharge air temperature along with the control algorithm to determine the requested heating capacity of the unit 0 100960 The outputs are controlled based on unit configuration and the required heating capacity
125. piping LH w aux pan E no piping RH w o aux pan extended end pocket F piping LH w o aux dm pan extended end pocket no piping RH w aux pan extended end pocket H no piping LH w aux pan extended end pocket J piping package RH K piping package LH piping package RH extd end pkt piping package LH extd end pkt Digits 10 11 design sequence Digit 12 inlets A front toe space frontbar grille C front stamped louver D bottom stamped louver E bottom toe space F backductcollar UNT SVXO7A EN 20 25 30 G backopen return H backstamped louver 5 ji 1 1 none manual bottom opening manual backopening manual top openin auto 2 position bottom opening auto 2 position backopening auto 2 position top opening auto economizer bottom opening auto economizer back opening auto economizer top opening no damper bottom opening no damper back opening no damper top opening Digit 14 outlets A frontduct collar B frontbar grille C frontstamped louver D front quad grille G top quad grille H top bar grille J top ductcollar gt Digit 15 color 0 nopaint concealedunits only 1 deluxebeige 4 driftwood grey 2 5 stone grey 3 cameowhite 6 rose mauve Digit 16 tamperproof locks leveling feet 0 none A lock
126. ponents During installation testing servicing and troubleshooting this equipment it may be necessary to work with live electrical components Have a qualified licensed electrician or other individual who is properly trained in handling live electrical components perform these tasks Failure to follow all electrical components could result in death or serious injury WARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury Air Filters Change or clean air filters at least twice a year Filters require more frequent care under high load or dirty air conditions since a clogged filter reduces airflow Table M A 1 lists filter size and quantity by unit size Throwaway and pleated media filters are available for all units Follow the instructions below to replace the disposable filters UNT SVXO7A EN Maintenance e TRANE maintenance
127. r over the pipe See I MR 7 Venting the Hydronic Coil The hydronic coil contains a vent either manual or automatic to release air from theunit This vent is not sufficient for venting the water piping system in the building The coil air ventis on the piping side abovethe coil connections on the unit See Figure I MR 5 and I MR 6 Perform the following steps to vent the coil after installing the unit 1 Pressurize the building piping system with water and vent any trapped air at system vents 2 Forunits with manual air vents back the set screw outto expel air from the unit and then re tighten the set screw The automatic air vent should require no adjustment for the coil to vent However ifthe coil does not vent immediately unscrew the outer portion of the fitting to expel air from the port If debris has become trapped in the vent completely remove the outer portion of the fitting and clean Figure 7 Electric heat lock out switch installed Extemal Insulating Requirements Insulate and vapor seal surfaces colder than surrounding air dew point a to prevent unplanned condensation Trane recommends field insulation of the following areas to prevent potential condensate problems 1 Supply and retum water piping connections 2 Condensate drain lines and connections 3 Fresh air intake duct connections 4 Discharge duct connections 5 Wall boxes UNT SVXO7A EN Balancing The Manual Circuit Se
128. r equivalent in applica tions that require a high degree of noise immunity Connect the shield to the chassis ground and tape at the other end Table HER L Maximum wiring distances for low voltage controls ft device wire size range fan speed switch 14 22AWG 500 zone sensor 16 22 AWG 200 Note Do not connect any sensor or input circuit to an external ground connection UNT SVXO7A EN e TRANE Installation Table FER 2 Low vertical free discharge Table I ER 4 Free discharge motors on units with two row electric or steam coils motors 115 volt unit 115 volt 208 230 volt 277 480 volt rpm sz HP kW RPM size hp kw hp kW hp kw H M L 03 07 03 0 1090 02 06 03 02 03 03 02 02 03 02 980 840 65 770 03 07 04 02 04 04 02 03 04 02 980 780 580 L 560 04 09 05 04 05 05 04 04 05 04 1050 70 50 04 08 03 0 1090 06 12 07 05 O6 07 05 05 07 05 1030 780 580 M 750 08 14 12 09 09 12 09 06 172 09 1080 90 60 L 560 10 09 05 04 05 05 04 04 05 04 1050 70 50 06 11 03 0 H 1115 12 07 05 06 07 05 05 07 05 1030 70 58 M 760 12 09 05 04 05 05 04 04 05 04 1050 70 50 L 560 14 12 09 09 12 09 06 12 09 108 90 60 Actual rpm will vary with application and configuration Table I ER 5 High static motors on units with two row electric or steam coils
129. r lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could resultin death or serious injury CAUTION Use Copper Conductors Only Unitterminals are not designed to accept other type conductors Failure to use copper conductors may result in equipment damage Common HVAC Acronyms For convenience a number of acronyms and abbreviations are used throughout this manual These acronyms are alphabetically listed and defined below BAS Building automation systems cfm Cubic feet per minute ewt entering water temperature F A Fresh air HVAC Heating ventilation and air conditioning Inputs outputs Installation operation and maintenace manual LH Left hand O A Outside air R A Return air RH Right hand rpm Revolutions per minute S A Supply air w c Water column ZSM Zone sensor module UNT SVXO7A EN UNT SVXO7A EN e TRANE Cross reference to related publications information for UniTrane fan coil amp Force equi Rover Installation Operation and Programming Guide EM TX SVXO1D EN Tracer ZN510 Unit C
130. r resorts to its stored configuration default fan speeds for heating and cooling unless the controller receives a communicated fan input When the fan switch is in the off position the controller does not control any unit capacity The unit remains powered and all outputs drive to the closed position Upon 1055 of signal the fan speed input the controller reports a diagnostic and reverts to using the default fan speed Cancel Buttons Momentarily pressing the on button during unoccupied mode places the controller in occupied bypass mode for 120 minutes You can adjustthe number of minutes in the unit controller configuration using Rover service tool The controller remains in occupied bypass mode until the override time expires or until you press the Cancel button Usethe RJ 11 communication as the connection point from Rover service tool to the communication link when the communication jackis wired to the communication link at the controller By accessing the communication jack via Rover you can access any controller link Communications Tracer ZN520 controller communicates via Trane s LonTalk protocol Typically a communication link is applied between unit controllers and a building automation system Communication also is possible via Rover Trane s service tool Peer to peer communication across controllers is possible even when a building automation system is not present You do not need
131. rain pan into the inside of the fan coil chassis end panel 3 Remove the two fanboard mounting screws 4 Slide the fanboard out horizontally to remove Horizontal Units 1 Open the bottom panel of cabinet and recessed models 2 Remove the main drain pan following the instructions given under the drain pan section above for horizontal fan coil units 3 While supporting the fanboard in place remove the two fanboard mounting screws which secure the fanboard to the unit A CAUTION Heavy Object Supportthefanboard when removing itfrom the unit Failure to properly support fanboard may result in minor to moderate personal injury Replacing the Motor The capacitor for all unit motors can be replaced should itfail Contact the local Trane service department to replace the motor capacitor in the event it fails However the motor itself cannot be repaired or rewound If the motor fails record the model number from the unit nameplate and present to the local Trane Service Parts Center to purchase a replacement The motor bearings are permanently lubricated and do not require any further oiling After removing the fanboard assembly from the unit disconnectthe fan wheel wheels from the motor shaft by loosening the Allen head setscrew on the fan wheel hub collar Next remove the mounting bolts holding the fan motor plate to the mounting bracket of the fanboard Then remove the motor by sliding the fan shaft from the fan wh
132. re in place 3 Verify that a clean air filter is in place 4 Properly set the damper position to meet the fresh air requirement Unit Piping 1 Properly vent the hydronic coil to allow water flow through the unit 2 Units with deluxe piping package Tighten unions adequately 3 Set water flow to the unit properly if unit piping has the circuit setter valve 4 Check strainers if supplied for debris after apply system water 5 Install the auxiliary drain pan and route the main drain pan hoses to the auxiliary drain pan on vertical fan coil units 6 Verify the condensate drain piping is complete for the unit drain pan 7 Ensure the drain pan and condensate line are not obstructed Remove any foreign matter that may have fallen into the drain pan during installation Electrical Check all electrical connections for tightness Note Some circumstances may require the unit to run before building construc tion is complete These operating conditions may be beyond the design parameters of the unit and may ad versely affect the unit 47 e TRANE Installation Tracer ZN510 amp ZN520 Unit Startup Refer to the Trane publication CNT IOP 1 Installation Operation and Programming Guidefor Tracer ZN510 and CNT SVXOAA EN for Tracer ZN520 The factory pre programs the Tracer ZN510 and ZN520 with default values to control the temperature and unit airflow Use Tracer Summit building automation system or Ro
133. rrectly installed 015 Complete all necessary duct connections 016 Complete all interconnection wiring forthe wall mounted fan mode switch or zone sensor per the wiring schematic and guidelines established in the Wall Mounted Control Interconnection Wiring section L1 17 Install the wall mounted fan mode Switch or zone sensor module options properly 018 Connect electrical supply power according to the NEC and unit wiring diagrams L1 19 Remove any miscellaneous debris such as sheetrock dust that may have infiltrated the unit during construction L1 20 Replace the air filter as required 45 e TRANE Installation Communication Wiring Units with Tracer ZN510 and ZN520 Only Communications Tracer ZN510 and ZN520 controllers are LonTalk devices that interface with the Trane Tracer Summit building management system Reference the unit wiring diagram or submittals Ground shields at each Tracer ZN510 and ZN520 taping the opposite end of each shield to prevent any connection be tween the shield and anther ground Refer to Trane publication CNT SVX04A EN Installation Operation and Program ming Guide for the communication wiring diagram Communication wire must conform to the following specification 1 Shielded twisted pair 18 AWG 2 Capacitance 23 21 25 picofarads pF per foot 3 Listing Rating 300V 150C NEC 725 2 b Class 2 Type CL2P 4 Trane Part No 400 20 28 or equivalent availa
134. s controlled based on the cooling capacity At 0 capacity all cooling capacities are off and the damper is at minimum position Between and 100 capacity the cooling outputs are controlled according to modulating valve logic modulating valves or cycled on 2 position valves As the load increases modulating outputs open further and binary outputs are energized longer At 100 capacity the cooling valve or damper is fully open modulat ing valves or on continuously and 2 position valves Unit diagnostics can affect fan operation causing occupied and occupied standby fan operation to be defined as abnormal Refer to the Troubleshooting section for more information about abnormal fan operation The Tracer 24520 controller operates the supply fan continuously when the controller is in the occupied and occupied standby modes for either heating or cooling The controller only cycles the fan off with heating and cooling capacity in the unoccupied mode Operation The economizer is used for cooling purposes whenever the outdoor tem perature is below the economizer enable setpoint and there is a need for cooling The economizer is used first to meet the space demand and other forms of cooling are used if the economizer cannot meet the demand alone See modulating outdoor air damper operation for additional information Cascade cooling control initiates a discharge air tempering function if the discharge air tem
135. s return air stream If both a hardwired and communicated space temperature value exist the controller ignores the hardwired space temperature input and uses the communicated value Extemal Setpoint Adjustment Zone sensors with an external setpoint adjustment 1kQ provide the Tracer ZN520 controller with a local setpoint 50 to 85 F or 1010 29 4 C The external setpoint is exposed on the zone sensor s front cover When the hardwired setpoint adjustment is used to determine the setpoints all unit setpoints are calculated based on the hardwired setpoint value the configured setpoints and the active mode of the controller The hardwired setpoint is used with the controller s occupancy mode occupied occupied standby or unoccu pied the heating or cooling mode the temperature deadband values and the heating and cooling setpoints high and low limits to determine the controller s active setpoint When a building automation system or other controller communicates a setpoint to the controller the controller ignores the hardwired setpoint input and uses the communicated value The exception is the unoccupied mode when the controller always uses the stored default unoccupied setpoints After the controller completes all setpoint calculations based on the requested setpoint the occupancy UNT SVXO7A EN Operation mode the heating and cooling mode and other factors the calculated setpoint is validated against
136. s the relative humidity offset The controller uses the cooling and reheat capacities simultaneously to dehumidify the space While dehumidify ing the discharge air temperature is controlled to maintain the space tem perature at the current setpoint A typical scenario involves high humidity and high temperature load of the space The controller sets the cooling capacity to 100 and uses the reheat capacity to warm the discharge air to maintain space temperature control Dehumidification may be disabled via Tracer or configuration UNT SVXO7A EN Note If the unit is in the unoccupied mode the dehumidification routine will not operate Data Sharing Because this controller utilizes LonWorks technology the controller can send or receive data Setpoint heat cool mode fan request space temperature etc to and from other controllers on the communication link with or without the existence of a building automation system This applies to applications where multiple unit controllers share a single space temperature sensor for rooms with multiple units but only one zone sensor for both standalone with communication wiring between units and building automation system applications For this application you will need to use the Rover service tool For more information on setup refer to the Trane publication EMTX IOP 2 Binary Inputs The Tracer ZN520 controller has four available binary inputs See Table O SO 12
137. t s ability to transfer heat that can result in comfort problems increased airflow resistance and thus increased operating energy costs If the coil surface dirt becomes wet which commonly occurs with cooling coils microbial growth mold may result causing unpleasant odors and serious health related indoor air quality problems Inspect coils at least every six months or more frequently as dictated by operating experience Cleaning frequently is dependent upon system operating hours filter maintenance and efficiency and dirt load Follow the suggested methods in the following paragraphs Steam and Hydronic Coil Cleaning Procedure 1 Disconnect all electrical power to the unit 2 Don the appropriate personal protective equipment PPE 3 Access both sides of the coil 4 Use a soft brush to remove loose debris from both sides of the coil 5 Use a steam cleaning machine starting from the top of the coil and working downward Clean the leaving air side of the coil first then the entering air side Use a block off to prevent steam from blowing through the coil and into a dry section of the unit 6 Repeat step five as necessary Confirm thatthe drain line is open following completion of the cleaning process 7 Allow the unitto dry thoroughly before putting the system back into service 8 Straighten any coil fins that may be damaged with a fin rake 9 Replace all panels and parts and restore electrical power to
138. t the wire run length to 5 000 ft Truck and branch configurations are significantly shorter LonTalk wire length limitations can be extended through the use of a link repeater Recommended Communication Wiring Practices The following guidelines should be followed while installing communication wire LonTalkis not polarity sensitive Trane recommends that the installer keep polarity consistent throughout the site Only strip away two inches maximum of the outer conductor of shielded cable sure that the 24VAC power supplies are consistent in how they are grounded Avoid sharing 24VAC between LonTalk UCMs Avoid over tightening cable ties and other forms of cable wraps A tighttie or wrap could damage the wires inside the cable not run LonTalk cable alongside or in the same conduit as 24VAC power eIn an open plenum avoid lighting ballasts especially those using 277VAC Do not use a trunk and branch configuration if possible Trunk and branch configurations shorten the distance cable can be run UNT SVXO7A EN Installation e TRANE Pre Startup Checklist Complete this checklist after installing the unit to verify all recommended installation procedures are complete before unit startup This does not replace the detailed instructions in the appropriate sections of this manual Disconnect electrical power before performing this checklist Always read the entire section carefully to becom
139. ted on the top of the unit The hanger holes allow a maximum shank size of c inch diameter threaded rods or lag screws installer provided Follow the installation procedure below Note Follow the requirements of National Fire Protection Association NFPA Standard 90A or 90B concerning the use of concealed ceiling spaces as return air plenums 1 Prepare the ceiling opening for recessed units Reference the unit submittals for dimensions 2 Position and install the suspension rods or a suspension device supplied by installer according to the unit model and size in the Dimensions amp Weights section 3 On cabinet units remove the bottom panel by using 2 inch Allen wrench to unscrew fasteners Swing the panel down and lift outward 4 Level the unit by referencing the chassis end panels Adjust the suspension device 5 Complete piping and wiring connections necessary ductwork as instructed in the following sections Ensure that the auxiliary drain pan is in position on fan coil units 6 Install the bottom panel before starting the unit 7 Ensure condensate drain line is pitched one inch per ten feet of pipe away from the fan coil unit Cabinet units Install the bottom panel by placing the hinged end on the units hinged end always at the return end of the unit Reference the Dimensions amp Weights section for keyslot hanger hole locations Swing the panel upward into position Secure the pa
140. temperature failure Discharge air low limit 1 Nondatching diagnostics automatically reset when the input is present and valid Resetting Diagnostics There are a number of ways in which diagnostics are reset 1 Automatic reset by the controller 2 initiating a manual output test at the controller 3 By cyding power to the controller 4 Through Rover Trane s service tool 5 Tracer ZN520 by using any other communicating device ab le to access the controller s diagnostic reset input 6 Tracer ZN520 by cyding the fan switch from Off to any speed setting Automatic Reset by the Controller The controller includes an automatic diagnostic reset function that attempts to automatically restore the unit when a low temperature diagnostic occurs Note The controller implements the automatic diagnostic reset function only once every 24 hours For the controller to increment the 24 hour timer you must maintain power to the controller Cycling power resets all timers and counters UNT SVXO7A EN Maintenance e TRANE Table M D 2 Tracer ZN510 controller diagnostics diagnostic latching fan valves elecheat damper auxiliary no enabled noaction action temp failure condensate yes off closed off closed overflow detection entering no enabled enabled enabled enabled water temp failure fan mode no enabled enabled enabled enabled failure invalid unit yes disab
141. temperature value is present non latching diagnostic When the entering water temperature sensor fails the controller prohibits all hydronic cooling operation but allows the delivery of heat when heating is required In the Cool mode all cooling is locked out but normal fan and outdoor air damper operation is permitted Note 3 When the outdoor air temperature sensor has failed or is not present the Tracer ZN520 controller generates a diagnostic to indicate the sensor loss condition The controller automatically clears the diagnostic once a valid outdoor air temperature value is present non latching diagnostic When the outdoor air temperature sensor fails or is not present the controller prohibits economizer operation 60 UNT SVXO7A EN Translating Multiple Diagnostics The controller senses and records each diagnostic independently of other diagnostics It is possible to have multiple diagnostics present simultaneously The diagnostics are reported in the order they occur Possible diagnostics include Low temperature detection Condensate overflow Low airflow fan status Discharge air temp limit Space temperature failure Entering water temp failure Discharge air temp failure Outdoor air temp failure Local setpoint failure Local fan mode failure sensor failure Generic AIP failure Humidity input failure Defrosting compressor lockout Maintenance required Invalid unit configuration Generic
142. the following setpoint limits Heating setpoint high limit Heating setpoint low limit Cooling setpoint high limit Cooling setpointlow limit These setpoint limits only apply to the occupied and occupied standby heating and cooling setpoints These setpoint limits do notapply to the unoccupied heating and cooling setpoints stored in the controller s configuration When the controller is in unoccupied mode italways uses the stored unoccu pied heating and cooling setpoints The unit can also be configured to enable or disable the local hardwired setpoint This parameter provides additional flexibility to allow you to apply communi cated hardwired or default setpoints without making physical changes to the unit Similar to hardwired setpoints the effective setpoint value for a communi cated setpoint is determined based on the stored default setpoints which determines the occupied and occupied standby temperature deadbands and the controller s occupancy mode Fan Switch The zone sensor fan switch provides the controller with an occupied and occupied standby fan request signal Off Low Medium High Auto If the fan control request is communicated to the controller the controller ignores the hardwired fan switch input and uses the communicated value The zone sensor fan switch input can be enabled or disabled through configuration using the Rover service tool If the zone sensor switch is disabled the controlle
143. through the coils Drain the mains ahead ofthe coils through a steam trap to the retum line 7 Overhead returns require one psig of pressure at the steam trap discharge for each two feet elevation to ensure continuous condensate removal 8 Proper steam trap selection and installation is necessary for satisfactory coil performance and service life For installation use the following steps a Position the steam trap discharge at least 12 inches below the condensate retum connection This provides sufficient hydrostatic head pressure to overcome trap losses and ensure complete condensate removal UNT SVXO7A EN Installation STEAM TRAP CONNECTION Figure MR 2 Typical Piping for Steam Coils b Trane recommends using flat and thermostatic traps because of gravity drain and continuous discharge Operation c Use float and thermostatic traps with atmospheric pressure gravity condensate return with automatic controls or where the possibility of low pressure supply steam exists d Always install strainers as close as possible to the trap inlet side Reference Figure I MR 10 for an example of a properly piped steam coil FULL SIZE OF COIL CONNECTION Code of System Components in Piping Di FT Float and thermostatic steam trap BT Bucketsteam trap GV Gate valve OV Automatic two position on off control valve TV Automatic three way control valve VB Vacuum breaker CV Check valve ST Strainer AV
144. tight However these seals can be broken if field modifications are needed Tracer ZN controller configuration switches factory pre set connection to valve amp piping sensor crossover harness Do not adjust these switch positions because it may result in a safety hazard If the board needs replacement the switches on the new board must be field set in the same positions as the old board as shown in the unit wiring diagram Note SW3 and SW4 affect safety functionality and they are factory secured When replacing a board with SW3 and SW4 be sure to affix the switch positions with 3M 3764Q or equivalent Board switches are factory set based on unit control options Figure M T 2 shows a relay board detail Additional information on switch settings follows Switch SWI Controller Type SW1 determines the unit control type Position 1 indicates one of the following e generic field controller low voltage fan speed switch Tracer 21010 e Tracer 24510 Position 2 indicates Tracer ZN520 Switch SW2 Electric Heat SW2 determines if the unit has electric heat Switch SW3 High Speed Interlock SW3 determines if the unit will have a safety mandated high speed interlock with electric heat High speed interlock ensures heat dissipates in a manner that keeps the unit in a safe operating condition SW3 configures the unit to actuate high speed interlock if the first or second stage is on SW
145. troller it will uninstall itself from the ICS communication network and shut down all unit operation Green STATUS LED During normal operation the LED is on continuously If the LED blinks once the controller is in Manual output test mode If the LED blinks twice the controller is in Manual output test mode with one or more diagnostics present Green STATUS LED indicates whether the controller is powered on 24 VAC supplied If the LED blinks second second off for 10 seconds the controller is in the Wink mode Note The wink feature allows the identification of a particular controller When sending a request from a device such as Rover the controller will wink to indicate it received the signal If the LED is off either the power is off an abnormal condition is present or the TEST button is pressed Yellow COMM LED If the LED is off continuously the controller is not detecting any communication This is normal for units in standalone applications If the LED blinks the controller detects communication Ifthe LED is on continuously this indicates an abnormal condition Manual Output Test The purpose of the manual output test sequence is to verify output and end device operation Use the manual output testto 65 e TRANE Maintenance Verify output wiring and operation without using Rover service tool Force the water valve to open and balance the
146. tter Valve The manual circuit setter valve is an optional end valve supplied on the return pipe of the factory piping package The valve allows the operator to regulate water flow through the hydronic coil balance the water flow through the unit with other units in the piping system and serves as a shutoff or end valve See Figure I MR 8 Follow the procedure below to set maximum water flow through the coil 1 Establish water flow through the coil Perform an open override of the valve if the control valve is closed to the coil either manually or by Tracer If the piping package has two position normally closed valves Drive open the valve using a 24V signal If the piping package has two position normally open valves Manually drive open the valve by removing power to the valve If the piping package has modulating valves To manually drive the valve open depress the button stem on top of the valve and push the lever located on the side of the valve to the full open position 2 For presetting use the appropriate valve curve shown in Chart I MR 1 on page 34 determine which setting is necessary to achieve the appropriate pressure drop The M line is the appropriate line 3 Carefully remove the Schrader pressure port connection caps on the manual circuit setter since they will be atthe same temperature as the pipeline 4 Bleed all air from the hoses and meter before reading the pressure drop Refer to the gaug
147. um piping should not interfere with the auxiliary drain pan or condensate line See Connecting the Condensate Drain section for more information The installer must provide adequate piping system filtration and water treatment If the unit has a factory deluxe piping package the piping includes a strainer with a 20 mesh size screen which allows minimal protection from debris Therefore clean the strainer regularly Note Maintain a minimum distance of onefoot between the reduction fitting for the inch diameter line and fan coil piping connections 1 The factory piping package ships with brackets to adequately support the piping during shipment Remove these brackets before connecting water piping to the unit 2 Closethe piping end valves to the fully open position to prevent damage to the valve seat during brazing 3 Remove the auxiliary drain pan if it is in place to prevent exposure to dripping solder or excessive temperatures 4 Solder water piping connections to supply and retum end connedions Avoid overheating factory soldered joints to prevent the possibility of leakage 5 Insulate fan coil piping to auxiliary drain pan connections and any piping thatis not abovethe auxiliary drain pan Condensate Drain 1 De burr the pipe end before making the connedion to the drain pan 2 Connect a inch O D copper pipe or tube with a 0 20 inch wall thickness to the auxiliary drain pan This should
148. unicated to the controller the unitcontrols the fan to off The unit is not capable of heating or cooling when the controller is in this mode Valve override The controller can communicate a valve override request This request effects the valve operation Manual output test The controller includes a manual output test sequence to verify analog and binary output operation and the associated wiring However based on thecurrent step in the test sequence the valves may not be open Refer to the Manual Output Test section Diagnostic present A specific list of diagnostics affects valve operation For more information see the Diagnostics section Sampling logic The controller includes entering water temperature sampling logic that automatically invokes during 2 pipe or 4 pipe changeover It determines whenthe entering water temperature is either too cool or too hot for the desired heating or cooling mode Refer to the Entering Water section Unit configuration The controller must be properly configured based on the actual installed end devices and application When the unit configuration does not match the actualend device the valves may not work correctly No power to the If the controller does not have power the valves do not operate For the controller controller to operate normally it must have an input voltage of 24 VAC When the green LED is off continuously the controller do
149. upied mode the controller controls the fan off While unoccupied the controller heats and cools to maintain the unoccupied heating and cooling setpoints In unoccupied mode the fan is controlled on high speed only with heating or cooling The unit fan is always off during occupied occupied standby and unoccupied modes when the unitis off due to a diagnostic or when the unit is in the off mode due to the local zone sensor module a communi cated request or the default fan speed off If both a zone sensor module and communicated request exist the commu nicated request has priority Fan Cyding Operation TracerZN520 does not support fan cyding in occupied mode The fan cycles between high speed and off in the unoccupied mode only The controller s cascade control algorithm requires continuous fan operation in the occupied mode Fan Off Delay When a heating outputis controlled off the Tracer ZN520 controller automatically holds the fan on for an additional 30 seconds This 30 second delay gives the fan time to blow off any residual heat from the heating source such as a steam coil When the unit is heating the fan off delay is normally applied to control the fan otherwise the fan off delay does not apply Outdoor Air Temp Modulating Outdoor Air Damper occupied or occupied bypass occupied standby unoccupied none or invalid open to occupied minimum position open to occupied standby minimum position
150. ver software to change the default values Follow the procedure below to operate the Tracer 24510 ZN520 in a stand alone operation 1 Turn power on atthe disconnect switch option 2 Position the fan mode switch to either high medium low or the auto position 3 Rotate the setpoint dial on the zone sensor module to 55 F for cooling or 85 F for heating The appropriate control valve will actuate assuming the following conditions 1 Room temperature should be greater than 55 F and less than 85 F 2 For a 2 pipe fan coil unit with an automatic changeover sensor the water temperature input is appropriate for the demand placed on the unit For example cooling operation is requested and cold water 5 lower than room temperature flows into the unit 3 Select the correct temperature setpoint Note Select and enable zone sensor temperature settings to prevent freeze damage to unit UNT SVXO7A EN General Information Relay Board The relay board is anew component on all models except those with a unit mounted line voltage fan speed switch that replaces all the loose wires in the control box It consolidates many control components onto one board therefore making it easy to troubleshoot in the field There is an LED on the board that indicates when power is supplied to the board All connections are made to match up only with the applicable component to thus prevent miswiring Factory switc
151. w wingnut and adjust the linkage Economizer Damper Option With a valid outdoor air temperature either hardwired or communicated Tracer ZN520 uses the modulating economizer damper as the highest priority source of cooling Economizer operation is only possible through the use of a modulating damper Economizing is possible during the occupied occupied standby unoccupied and occupied bypass modes The controller initiates the economizer function if the outdoor air temperature is cold enough to be used as free cooling capacity If the outdoor air temperature is less than the economizer enable setpoint absolute dry bulb the controller modulates the outdoor air damper between the active minimum damper position and 10096 to control the amount of outdoor air cooling capacity When the outdoor air temperature rises 5 F above the economizer enable point the control ler disables economizing and moves the outdoor air damper back to its predeter mined minimum position based on the current occupancy mode or communi cated minimum damper position Dehumidification Dehumidification is possible when mechanical cooling is available the heating capacity is located in the reheat position and the space relative humidity setpointis valid The controller starts dehumidifying the space when the space humidity exceeds the humidity setpoint The controller continues to dehumidify until the sensed humidity falls below the setpoint minu
152. with the Tracer ZN010 and ZN510 provide up to three different inputs 1 Space temperature measurement 10KQ thermistor 2 Local setpoint 3 Fan mode switch Wall mounted zone sensors include a thermistor as a component of the internal printed circuit board Unit mounted zone sensors use a sensor placed in the units return air stream Each zone sensor is equipped with a thumbwheel for setpoint adjustment Fan Mode Switch The zone sensor may be equipped with a fan mode switch The fan mode switch offers selections of off low medium high or auto Supply Fan Operation Reference Table O SO 5 for fan mode operation Reference Table O SO 5 for fan mode operation Tracer 24010 and ZN510 will operate in either continuous fan or fan cycling mode The fan cycles when the fan mode switch is placed in auto The fan runs continuous when placed in the high medium or low position Use Rover Trane s installation and service tool to change auto defaults 52 Operation Table O SO 4 Analog inputs analog input description application zone space temperature space temperature detection set local setpoint thumbwheel setpoint fan fan mode input zone sensor fan switch analog input 1 analog input 2 12 entering water temperature discharge air temperature entering water temperature detection discharge air temperature detection Notes 1 The zone sensor entering water temperature sensor
153. y drain pan with the switch float extending over the pan Secure the drain pan by attaching the pan s bracket with the factory provided clip See Figures I MR 1 and l 2 Figure 1 Condensate float switch installed in horizontal auxilliary drain pan Automatic Changeover Sensor Two pipe changeover units with either the Tracer ZNO10 ZN510 and ZN520 controls have an automatic changeover sensor that determines heating or cooling mode based on the supply water temperature On units with a factory piping package the factory straps the changeover sensor to the piping supply water pipe See Figure I MR 3 and I MR 4 If the unit does not have a factory piping package the factory attaches the sensor and coiled lead wires to the piping side end panel The installer should attach the sensor parallel to and in direct contact with the supply water pipe Note The installer is responsible to ensure the changeover sensor is installed in a location that can sense active water temperature Otherwise the unit may fail to sense the correct operating mode and disable temperature control When using field supplied three way valves install the changeover sensor upstream of the valve on the supply water pipe When using field supplied two way control valves install the changeover sensor in a location that will detect active water temperature The unit must always be able to sense the correct system water temperature regardl

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