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Trane SCRH Air Conditioner User Manual

1. Hot water coil 3 amp 5 ton units iz PKG SVX14A EN SSSSSSSS 1 0 NPT Plenum dimensions amp weight in Ibs unit size A B weight 4 31 89 22 24 44 5 ton 36 41 24 01 54 7 5 ton 40 94 28 74 73 10 amp 12 ton 65 75 29 52 120 15 ton 80 31 29 52 146 0 75 0 75 SCWH SCRH Hot water coil dimensions amp weights amp 5 ton units in Ibs size A B c D E F G weight 3 ton 26 46 18 98 25 67 5 79 5 79 10 00 12 76 13 5 ton 30 98 23 50 30 20 7 040 7 040 1250 15 26 18 15 e TRANE Installation Hot water coil 35 51 28 03 7 5 ton units 0 43 591 MEL a mde 1 2 a F ts 1 t 2 8 p A HH L 1 Pd BE e 5 N 039 34 72 1 0 5 9 A 025 75 SCWH SCRH Hot water dime
2. 32 e TRANE Installation Midrange Model Number Description Following is a complete description of the midrange model number Each digit in the model number has a corresponding code that identifies specific unit options SCWH 07542 A0 1 1 0 12345678 9 1011 12 13 14 15 Digit 1 unit model S self contained Digit 2 unit type C commercial Digit 3 condenser medium R remote air cooled W water cooled Digit 4 development sequence H development series Digit 5 6 7 unit nominal capacity 030 2 3tons 050 5 tons 075 7 5 tons 100 10 tons 120 12 tons 150 15 tons Unit Airflow Configurations Digit 8 unit voltage 3 208 230 volt 60 hz 3 ph 4 460 volt 60 hz 3 ph 5 575 volt 60 hz 3 ph Digit 9 air flow configuration 2 vertical discharge front return 3 vertical discharge rear return Digit 10 11 design sequence AO design sequence Digit 12 air filter type 1 one inch fiberglass throwaway Digit 13 control 0 control interface Digit 14 unit finish 1 painted 2 corrosion resistant coating Digit 15 coil finish Cu Ni Condenser 0 none E evaporator coated SCRH J Cupronickel condenser amp Evaporator coated SCWH FRONT RETURN FIELD CONVERTIBLE STANDARD REAR RETURN horizontal CW z 5g ug E L lt 55 ae z amp EE 55 RI
3. sso 1 T ro 1 1 a L ss 5 5 _ een E SCH0503 somos 5 E 2 210 5 0753 s or 9 75 2 26 1 H0755 575V 60Hz 3Ph d 210 rr 2 5 8 80 13 70 62 1 5 618 1 4 94 940 665 90 13 70 708 90 EE ZO es 1 4 94 940 13 70 5 61 1 ozsV ieoHzisPn 85 540 12 5 5 5 5 5 1205 575V 60Hz 3Ph 208 230V 60Hz 3Ph 164 0 460V 60Hz 3Ph 100 0 2 N 5 SC H1503 s H1204 460V 60Hz 3Ph H1504 3 40 35 Notes 1 Voltage range Nominal voltage 208 230V acceptable range 187 253V Nominal voltage 460V acceptable range 414 506V Nominal voltage 575V acceptable range 518 633V A WARNING 2 Ampacity is calculated per UL formula ampacity 1 25 x compressor RLA sum of the second compressor RLA if used evaporator motor FLA Hazardous Voltage 3 Maximum fuse size is calculated per UL formula MFS 2 25 x compressor RLA sum of second compressor RLA if Di Il el used evaporator motor FLA isconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure power cannot be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury CAUTION Use Copper Conductors Only Unit terminals are not designed
4. COMMAND BOX J B S 5 S S Se Sls lt wS 5 mu 3 oe lt SIS hla d S S 3 BS T i aa v o Vu S hisses 1 N EE tHketehida IH T 1 t i I 2 4 4 EUM bn I 1 L lt u 1 yL L er 182 n ejji e e i A 1 1 l ls um aL x 8971 757 2251 287 s t ar tZ so S WATER INLET OUTLET CONNECTIONS BOTH SIDES 8197 R SCRH SCWH FORK LIFT SLOT SCWHSCRH weight Ibs operating shipping unit size 75 weight 657 weight 702 PKG SVX14A EN 12 Installation 10 12 amp 15 tons with top mounted fan configuration SCWH SCRH FAST LATCH ALLEN KEY SIZE vertical discharge 31 49 COIL ACCESSORY 2 67 HOT WATER STEAM 29 52 e TRANE horizontal discharge field converted DISCHARGE LIQUID CONNECTIONS B TH SIDES S DRAIN CONNECTION 1 m 0 3 4 BSP I M REAR RETURN OPENING UNIT MOUNTED 5
5. BL BL BL EVAPORATOR ALTERNATIVE EVAPORATOR MOTOR IOL TYPE a nae LINE VOLTAGE EVAPORATOR COMPRESSOR INSET 1 NOTES 1 DASHED LINES INDICATE RECOMMENDED 2 UNLESS OTHERWISE NOTED ALL FIELD WIRING BY OTHERS DASHED LINE SWITCHES ARE SHOWN AT 25 C 77 F ENCLOSURES AND OR DASHED DEVICE AT ATMOSPHERIC PRESSURE 50 OUTLINES INDICATE COMPONENTS RELATIVE HUMIDITY WITH ALL UTILITIES PROVIDED BY THE FIELD PHANTOM LINE TURNED OFF AND AFTER A NORMAL ENCLOSURES INDICATE ALTERNATE SHUTDOWN HAS OCURRED CIRCUITRY OR AVAILABLE SALES OPTIONS TYPICAL ROOM THERMOSTAT COOLT HEAT 2 HEAT OPTIONAL ACCESSORY PM FOR TRANSFORMER WIRING REFER TO INSET A A 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 AVERTISSEMENT VOLTAGE HASARDEUX DESCONNECTEZ LA SOURCE ELECTRIQUE AVANT D EFFECTUER ENTRETIEN FAUTE DE DECONNECTER LA SOURCE ELECTRIQUE AVANT D EFFECTUER L ENTRETIEN PEUT ENTRAINER DES BLESSURES CORPORELLES SEVERES OU LA MORT lt o REMOVE JUMPER TO CONNECT FIELD SUPPLIED WATER FLOW SWITCH REFER TO INSET C IMPORTANT USE COPPER CONDUCTORS O
6. QVOTU3AO O4 8 135 NI NMOHS NMOHS SNOLLOINNOD gt 30 A3S 3SnVO NYO ONIOIAN3S 30438 YBMOd 193NNOOSIQ OL IAMA SNOLI23NNO2 TVNH31X3 lt 38 AVW LINN OVOTM3AO IVNIWA31 ABOZ OL 123 02 WNIWYIL AOEZ NO ONIONS 340438 04 FAY NMOHS SY SNOLDNNOO YOLON gt SI SIDSNNOSSIT LONGE aM Od Ute EOSINNOSSIC MOTA vig ABOZ N3HM NMOHS SNOLLOINNOD 139 SnoQsvzvH VISOWM3HI WOOY TWOIdAL 10 60S80106 X 30109 135 OL 3444 YFIWAOASNVAL 803 gt 22 12 A LA GND f NI ne HM zv 101 YOLON MOLVMOdVA3 3AUVNH3IT amp b5 8 L t 10 1 a gt t SNOLLdO 537 5 FIEVIVAY YO AMLINDAID SOLON 20 SVH NMOGLNHS 3LVNM3ITV 31V2IGNI 53 05072 3 TvWUON v 3147 330 GINYNL INIT WOINVHd OTJH FHL TW ALIGINNH 3AUYTISJ SININOANOD 31V2IGNI SINITLNO 06 1v FANSSIAd OlsdHdSOWlv LY JONI
7. TNS GR GR po 24v 24v wH RD 1 GND GND RD FD o 230v 2522 r Yagi TNS RD A WARNING HAZARDOUS VOLTAGE DISCONNECT ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING RD EVAPORATOR ALTERNATIVE EVAPORATOR MOTOR IOL FOR TRANSFORMER WIRING REFER TO INSET A CONNECTIONS SHOWN ARE FOR 230V WHEN 208V OPERATION IS REQUIRED REMOVE RED WIRE FROM WH lt lt Ig T HEAT OPTIONAL ACCESSORY GND TYPICAL ROOM THERMOSTAT CRANKCASE HEATER GROWNDING TERMINAL MOTOR ANTISHORTCYCLE TIMER FIELD INSTALLED ACCESSORIES CONTROL POWER TRANSFORMER LOW PRESSURE CUT OUT INTERNAL OVERLOAD REV B PKG SVX14A EN lt EVAPORATOR MOTOR CONNECTIONS AS SHOWN ARE FOR LINE BREAK INTERNAL OVERLOAD 101 UNIT MAY BE SUPPLIED WITH EXTERNAL CONNECTIONS FOR IOL SHOWN IN INSET B FOR EXTERNAL OVERLOAD TYPE JUMPER BETWEEN LVT TERMINALS 1 AND G MUST BE REMOVED FAILURE TO DISCONNECT POWER BEFORE SERVICING CAN CAUSE SEVERE PERSONAL INJURY OR DEATH N AVERTISSEMENT VOLTAGE HASARDEUX DESCONNECTEZ LA SOURCE ELECTRIQUE CONNECTIONS St FOR 3801 CONNECTIONS SHOWN ARE FOR 380V HIGH PRESSURE CUT OUT CONNECTIONS SHOWN ARE FOR 575
8. 1 OPENING ACCESSORY H ly WATER OUTLET i i _ WATER i INLET N eu RM ISCHARGE d MATER INLET OUTLET 2 COMMAND lt CONNECTIONS BOTH SIDES FORK SLOT SCWH SCRH SCWHSCRH dimensions amp weight in lbs unit tons A B K M N 10 6675 8878 7 04 1807 57 28 7 48 5 8 8 30 12 65 75 9271 7 04 18 07 61 22 7 48 12 24 15 80 31 92 71 19 83 19 83 61 22 5 12 34 12 24 PKG SVX14A EN 13 e TRANE installation 10 12 amp 15 tons with side mounted fan configuration field converted SCWH SCRH 59 04 SCWHSCRH Dimensions unit tons A D E F G 10 6575 7 04 18 07 5728 66 93 25 79 12 6575 7 04 18 07 61 22 66 93 29 73 15 80 31 1983 19 83 61 22 8149 29 73 2 98 23 56 1 2 98 1 Base rail must be attached to the floor before converting unit to side mounted fan configuration 2 Coil or electric heater cannot be assembed inside the cabinet with the side mounted fan configuration Notes PKG SVX14A EN Plenum Installation 12 73
9. 5 SIYNSOTONT 4 44 9 SZ LY NMOHS IHY SIHOLIMS G3HSVG SHIHLO AG 9NIMIM 1313 Q31ON FSIMYFHLO SSIINN Z GIGNINNODIY 31vV9IONI SINIT GFHS C 1 SILON a t a E gt 39VLTOA INIT YOSSIYIWOD YOSSIADWOD A yowo i AINO suiotonaNog Tul addo ISN NIHO A T RNGO WD OL zox 1 lt gt E gt lt x 011 B 91 8 au T Q c c gt 2 14 7 1 g 011 61 18 a4 27002 ZIVJH IIV3H 117002 LVLSOWYFHL TVIIdAL 33 PKG SVX01A EN wiring ical diagram i p Maintenance uz y COMPRESSOR LINE VOLTAGE 1 L NOTES 1 DASHED FIELD WIRING BY OTHERS DASHED LINE ENCLOSURES AND OR DASHED DEVICE OUTLINES INDICATE COMPONENTS PROVIDED BY THE FIELD PHANTOM LINE ENCLOSURES INDICATE ALTERNATE SWIT ATMOSPHERIC PRESSURE RELATIVE HUMIDITY WITH ALL SHUTDOWN HAS OCURRED Finset ees INES INDICATE RECOMMENDED 2 UNLESS OTHERWISE NOTED ALL 5 ARE SHOWN AT 25 C 77 F 50 UTILITIES TURNED OFF AND AFTER A NORMAL
10. Installation Operation and Maintenance Midrange Self Contained Units Models SCWH SCRH 3 5 7 5 10 12 amp 15 tons AO and later design sequence October 2008 PKG SVX14A EN e TRANE About This Manual Literature Change History Use this manual for commercial self contained models SCWH and SCRH This is the original issue of this manual It provides specific installation owner maintenance and diagnostic troubleshooting instructions for AO and later design sequences Note The procedures discussed in this manual should only be performed by qualified experienced HVAC technicians Note This document is customer property and must be retained for use by maintenance personnel It is important to perform periodic maintenance to help ensure trouble free operation Should equipment failure occur contact a qualified Trane service organization for an experienced HVAC technician to properly diagnose and repair this equipment Warnings and Cautions Warnings and cautions appear at appropriate sections throughout this manual Read these carefully A WARNING Indicates a potentially hazardous situation which could result in death or serious injury if not avoided 2008 Trane All rights reserved A CAUTION Indicates a potentially hazardous situation which may result in minor or moderate injury if not avoided Also it may alert against unsafe practices CAUTION Indi
11. MCA 1 25 x largest motor amps FLA or RLA the sum of the remaining motor amps Maximum fuse size MFS and maximum circuit breaker size MCB 2 25 x largest motor amps FLA or RLA the sum of the remaining motor amps Note If the rating value determined does not equal a standard current rating of over current protective device use the next lower standard rating for the marked maximum rating Voltage Range Voltages must be within 10 the nameplate voltage Ensure the unit voltage is balanced by measuring at the compressor terminals Voltage imbalance on three phase systems can cause motor overheating and premature failure Maximum allowable imbalance is 2 0 Voltage Imbalance Read the voltage at the compressor terminals to determine if it is balanced Voltage imbalance on three phase systems can cause motor overheating and premature failure The maximum allowable imbalance is 2 0 Voltage imbalance is defined as 100 times the sum of the deviation of the three voltages from the average without regard to sign divided by the average voltage For example if the three measured voltages are 221 230 and 227 the average voltage would be 221 230 227 226 volts 3 The percentage of voltage imbalance is then 100 226 221 2 2 226 In this example 2 2 imbalance is not acceptable Whenever a voltage imbalance of more than 2 0 exists check the voltage at the unit disconnect switch If the im
12. and repair any leaks A leak test is required on any repaired area Charge refrigerant into the equipment only after equipment does not leak or contain moisture Reference proper refrigerant charge requirements in the maintenance section of this manual to ensure efficient machine operation When charging is complete purge or drain charging lines into an approved refrigerant container Seal all used refrigerant containers with approved closure devices to prevent unused refrigerant from escaping to the atmo sphere Take extra care to properly maintain all service equipment directly supporting refrigerant service work such as gauges hoses vacuum pumps and recycling equipment When cleaning system components or parts avoid using CFC 11 R 11 or CFC 113 R 113 Use only cleaning solvents that do not have ozone depletion factors Properly dispose of used materials Refrigeration system cleanup methods using filters and driers are preferred Check for leaks when excessive purge operation is observed Keep abreast of unit enhancements conversion refrigerants compatible parts and manufacturer s recommenda tions that will reduce refrigerant emis sions and increase equipment operating efficiencies e TRANE Pre Installation Considerations Pre Installation Checklist Complete the following checklist before beginning unit installation Verify the unit size and tagging with the unit nameplate Make certain the fl
13. grille for proper airflow Figure HP 1 Plenum installation SOFT GASKET PROVIDED SELF DRILLING SCREW 1 4 x1 PROVIDED 21 e TRANE 22 Installation 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 Always read the entire section carefully to become familiar with the procedures A WARNING Hazardous Voltage Disconnect all electrical power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure power cannot be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Receiving unit and components for shipping damage File damage claims immediately with the delivering carrier Check nameplate unit data so that it matches the sales order requirements C Check unit for missing material Look for ship with accessories that are packaged separately and placed inside the access panel fan section or compressor section See the Receiving and Handling section Unit Location the unit location is adequate for unit dimensions ductwork piping and electrical connections access and maint
14. the unit nameplate 2 Reference the electrical data in Table ER 1 Protect the electrical service from over current and short circuit conditions in accordance with NEC requirements Size protection devices according to the electrical data on the unit nameplate 3 If using a field supplied disconnect install it at or near the unit in accordance with NEC Do not mounta field supplied disconnect on the unit Reference the electrical service entrance location on unit submittals 4 Complete the unit power wiring connections onto either the main terminal block or the field provided non fushed disconnect switch A WARNING Ground Wire All field installed wiring must be completed by qualified personnel All field installed wiring must comply with NEC and applicable local codes Failure to follow this instruction could result in death or serious injuries A WARNING Grounding Required Follow proper local and state elec trical code on requirements for grounding Failure to follow code could result in death or serious in jury 5 Provide proper unit grounding in accordance with local and national codes PKG SVX14A EN Installation e TRANE Electrical Data Calculations RLA rated load amps Compressor LRA locked rotor amps Fan motor LRA locked rotor amps N E C Table 430 151 FLA Full load amps N E C Table 430 150 Voltage utilization range is 10 Minimum circuit ampacity
15. Installation e TRANE Isolator Placement model Note Isolators are field provided 3 ton 5 ton 7 5 ton 10 ton 15 ton Table 1 Isolator load points units with a vertical discharge configuration Ibs L1 L2 L3 L4 L1 12 14 SCRB SIRB SCWB SIWB 99 105 120 127 105 133 118 124 115 122 157 166 129 165 166 165 154 203 227 221 177 234 230 231 208 266 273 253 263 334 293 300 243 332 359 356 315 388 382 375 Table 2 Isolator load points units with a horizontal discharge configuration Ibs model 7 5 ton 10 ton 15 ton L1 L2 L3 L4 L1 L2 L3 L4 SCRB SIRB SCWB SIWB 250 108 313 135 285 126 319 140 318 150 363 169 383 211 383 211 404 166 510 210 514 215 514 215 Table 3 Isolator load points amp types units with a horizontal discharge inverted L configuration lbs air cooled models water cooled models L1 12 L3 L4 L1 L2 13 L4 10 ton unit 318 150 363 169 383 211 383 211 spring red yellow red yellow red yelow red yellow rubber in shear green red green red green red green red 15 ton unit 404 166 510 210 514 215 514 215 spring purple yellow purple yellow purple yellow purple yellow rubber in shear gray red gray red gray red gray red Note Units ship with two different color isolators and should be placed as depicted in this chart to properly support the unit weight See Figures I PC 1 amp I PC 2 for correct isolator positions by unit size 3 5 amp 7 5
16. SIH 18 NMOYE MOWIE ania G3VO8 TVNIWe31 39VLTOA MOT 88v MO102 Add 10 90 g 38 AVW LIND AVISOWS3HI WOO SOIOVINOD Q3AOW38 ISnW GNV 3dAl GQVOTYIAO TVNH3IX3 804 SNOLLIINNOD TWNYFLXF HUM 03179915 S3iMOSS322V Q3TIVISNI 1313 FIOADLYOHSHNY 5 5 22 4377 15 01313 539915 N33W138 130 3 11 5 YIMOd 10 41 02 100 402 38055344 MOT QVOTM3AO IVNeT31NT 100 102 3NfnSS34d 0379915 LON ISNA FOVLIOA H9IH 3504 FOVLIOA MOT 0379915 LON HOLIMS 123NNOOSIG SNL 124 STVNIWASI IAT N33 ALS8 YFINN0 8 135 NI NMOHS 404 NMOHS SV SNOLLOFINNOD YOLOW YOLVAOdVAZ AYOSSIIOV 143 O3NOIS 5 YAL YO LISY ONITIVISNI N3HM AIAN VONIS LNANdINOS LN3A3Nd Ol AINO SYOLONGNOD 33dd05 ISN LYOW v1 S3s3A3S 5 5 5341553189 530 N3NIVMIN3 N3U3MHLN3 1 M30103443 0 LNVAV 3nOlHLO313 YSLOSNNOOIG 3inv4 N3LL3MIN3 M30103433 0 1 Z3193NNO9S30 XNAGHVSVH 39v110 INA3A3SSILH3AV V HIV3Q MO IWNOSH3d 3H3A3S 5 ONIDIAN3S 30438 H3MOd LOSNNOOSIC OL SYMTIVA HOLMS MOTI a31VM 5 1313 123 02 OL YIAWNAC MAONIY TWYNIWYJL AOS OL 1 123 02 ONY
17. if the air filter is dirty or has an airflow restriction and correct problem 4 Locate restriction by inspecting refrigerant lines for temperature changes Remove restriction evacuate and recharge 5 Replace if defective 6 Evacuate replace element recharge 7 Trace and firm up connection PKG SVX14A EN Problem Insufficient cooling Possible cause 1 Insufficient air flow due to a dirty evaporator b ice on evaporator coils indicates airflow restriction through evaporator c dirty filter d obstructed discharge air intake e fan motor not running f evaporator fan or fan wheel slipping on motor shaft 2 Heat gain or loss in room exceeds unit capacity 3 Defective compressor 4 Insufficient refrigerant charge indicated by a low wattage b condenser air outlet cold 5 Overcharge of refrigerant indicated by high wattage and sweating of the compressor return line 6 Thermostat not set for full cooling 7 Insufficient airflow through condenser due to a dirty condenser b loose belt c fan loose on shaft 8 Cutout on high pressure 9 Only one refrigerant circuit operational in 2 circuit units e TRANE Maintenance WARNING Hazardous voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in d
18. in a coastal or corrosive environment Annual Maintenance Check and tighten all set screws bolts locking collars and sheaves 1 Inspect clean and tighten all electrical connections 2 Visually inspect the entire unit casing for chips or corrosion Remove rust or corrosion and repaint surfaces 3 Visually check for leaks in refrigerant piping 4 Inspect fan motor and control contacts Replace badly worn or eroded contacts 3 3d D TP SCRH SIRH SCWH SIWH 030 050 075 17 SCRH SIRH SCWH SIWH 100 120 150 5 THE M10 NUTS PROPERLY 1 USING 17mm END WRENCH LOOSEN THE BOTH TOP AND BOTTOM M10 NUT 2 TO INCREASE THE BELT TENSION MOVE DOWN THE MOTOR BRACKET J TO DECREASE THE BELT TENSION MOVE UP THE MOTOR BRACKET 4 MAKE SURE THAT THE BOTH SIDE OF MOTOR BRACKET ARE ALIGNED WITH THE BASE SEE VIEW 5 Inspect the thermal expansion valve sensing bulbs for cleanliness good contact with the suction line and adequate insulation from ambient air WARNING Live Electrical Components During installation testing servicing andtroubleshooting this equipment it may be necessary to work with live electrical components Have a qualified licensed electrician or other individual who is properly trained handling live electrical
19. reduced due to the release of CFC fully halogenated compounds Trane urges all HVAC service personnel to make every effort to prevent any refrigerant emissions while installing operating or servicing equipment Always conserve refrigerants for continued use PKG SVX14A EN PKG SVX14A EN e TRANE Cross reference to related publications information Midrange Self Contained catalog PKG PRC012 EN Installation 2 general information 2 pre installation considerations ee A err rere c dimensions amp weights 11 mechanical requirements 17 electrical requirements 19 installation procedure 21 pre startup requirements 22 Start D au M Operation Rx re RA o 24 sequence of operation 24 Maintenance 25 general information 25 maintenance procedures 26 periodic Checklists 29 troubleshooting 80 typical wiring diagrams
20. should melt the rod 8 Continue to apply heat around the joint circumference until the brazing material is drawn into the joint by capillary action making a mechanically sound and gas tight connection 9 Visually inspect the connection after brazing to locate any pin holes or crevices in the joint Use a mirror to inspect connections that are difficult to see Electrical Requirements Follow these guidelines referring to unit wiring diagrams and supply power dimensional information to ensure correct electrical requirements at the installation site Reference supply power wiring locations on unit submittals orin the Dimensions and Weights section Specific unit wiring diagrams are provided on each unit Use these diagrams for connections or trouble analysis Unit Wiring Diagrams Specific unit wiring diagrams are provided on the inside of the control panel door Use these diagrams for connections or trouble analysis Expansion Valve Liquid Line Condenser Connections Figure I MR 1 Air cooled unit refrigerant piping PKG SVX14A EN Supply Power Wiring It is the installer s responsibility to provide power supply wiring to the unit terminal block or the non fused disconnect switch option Wiring should conform to NEC and all applicable code requirements 1 Verify the power supply available is compatible with the unit nameplate ratings The supply power must be within 10 of the rated voltage listed on
21. to accept other type conductors Failure to use copper conductors may result in equipment damage 20 PKG SVX14A EN Installation Checklist Reference the checklist below to verify all steps required to successfully install a deluxe self contained unit are complete This checklist is intended to acquaint the installing personnel with what is required in the installation process It does not replace the detailed instructions detailed in the applicable sections of this manual A WARNING Hazardous voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury General Unit Requirements Olnstall and secure the ductwork to the unit OCheck unit for shipping damage and material shortage Refer to the Receiving Checklist Electrical Requirements LlVerify that the electrical power supply characteristics comply with the unit nameplate specifications all control components tighten any loose connections properly sized and protected power supply wiring to a field supplied installed disconnect and unit power terminal block or to the optional unit mounted disconnect switch LIProperly ground the unit PKG SVX14A EN Installation e TRANE Field Installed Control Wirin
22. ton units bottom view of unit 17 8 7 dia hole under all 4 corners 1 fs Figure 1 Isolator mounting hole locations on 3 5 amp 7 5 ton units PKG SVX14A EN 10 amp 15 ton units bottom view of unit dia hole under all 4 corners 3 3 4 Figure 2 Isolator mounting hole locations 10 amp 15 ton units e TRANE Installation WARNING Proper Lifting Procedure 2 Using slings attach through the circular Li Follow these instructions and reference holes provided on the unit base Protect Spies didi rid Figure I PC 3 the unit from damage by rigging Test lift unit approximately 24 inches high to verify the proper center of gravity lift point To avoid dropping the unit reposition the lifting point if the unit is not level Failure to properly lift the unit could result in death serious injury or possible equipment property only damage 1 Slide a fork lift into the opening equipment provided on the unit base Move the fork lift carefully VV SLOT FOR FORK LIFT FORK LIFT Figure I PC 3 Proper unit lifting procedure 10 PKG SVX14A EN e TRANE Installation amp 5 tons SCWH SCRH vertical discharge horizontal discharge field
23. with the demand for heating or cooling The system switch may have two or more positions For example using a cooling only thermostat the system switch can be set in the Off or the Cool position The Off position disconnects power from the thermostat contacts that control the condensing unit This prevents the condensing unit from running regardless of the thermostat tempera ture setting The evaporator fan may circulate air if the fan switch is in the On position With the switch in the Cool position the condensing unit and evapo rator will operate on a signal from the thermostat calling for cooling With the fan switch set to Auto and the system switch set to Cool the following sequence takes place On a rise in room temperature t he thermostat contacts close to provide power to the evaporator fan contactor t he condensing unit fan contactor a nd the condensingunit compressor contactors As the room temperature reaches setpoing the thermostat contacts open to de energize all contactors a nd the system cycles off This system will remain off until additional cooling is required and the cycle repeats PKG SVX14A EN PKG SVX14A EN Maintenance e TRANE Table M GI 1 Midrange maintenance general data dimensions in Ibs height length depth weight shipping net cooling performance net cooling capacity btu h EER nominal air flow cfm system power kW Copeland scroll compressor quantity model in
24. LIGINNH SAUVTTH 238 XOS LV 30155359 OlM3HdSOWLv IV TION SOIWNOdVA3 z 1 0553 02 0553 02 IDVLIOA INIT a MOLVMOdVAT m mi 18 2 2 ig D xg gz 08 S3ION 35 PKG SVX01A EN e TRANE Www trane com For more information contact your local Trane office or e mail us at comfort Literature Order Number PKG SVX14A EN Date October 2008 Supersedes PKG SVX14A EN September 2007 Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice
25. M SNILO3NN00231NI 335 JSVHd den SOLON 53140553029 GITIVISNI 01313 VAOZ APZ 0330 3 Ol ION YINYOASNVAL H3HLO Ld390V Ol Q3N9IS3O LON STWNINYAL LINN SNIMIM WOIKAL HOLIMS MOTI MV 54 SAU FIOADLYOHSILNY LISV JOMINOD NO 0 01 TeNM31X3 2242 81 39VAVG LN3AdInO3 IN3A3Nd OL AINO SHOLONGNOD Y3ddOd ISN DNIGNMOSO ONG 5314055322 G3TIVISNI 01313 AGLV3H 3SVOXNVMO HOO 539915 N334138 1 0 YAL 055322 ANVLYOdNI 0553 02 N 3503 FOVLTO YAL YO LISY SNITIVISNI N3HM JAOWIY 130W nO S3H3A3S YOLOVINOD 2 LON ASNA HAIR dd S3Tl3HOdNOO 534065318 530 YSNIVYLNA LN3d N3lL33LN3 1 3 7 ISNA 39 1704 MOT 124 HOLIMS MOTI 10313 5 N3193NNOO3Q0 3inv4 5 7 01315 123NNO2 f 3 N3IL3MLN3 H301034433 0 LNVAV INO 1ND dH 031798015 LON HOLIMS 123 0290 SA 03 19905 01313 123 02 OL AIAN 3A0W33 AM3WHOJSNVMI YIMOd TOYLNOD SNL 100 102 FINSSPAd MOT d 9 OL 123NNO2 ASLS iXQ3ONVSVH 39V110 G4VOH vNIWH3I FOVLIOA MOT LAT 32018 TWNINYFL FOVLIOA HOIH LAH NOX SI A09r N3HM 7545 NMOHS SNOLLO3NNOO IN3A3SSIL33AV V 38 15 9 1 57 IAT N33M138
26. NLY TO PREVENT EQUIPMENT DAMAGE UNIT TERMINALS ARE NOT DESIGNED TO ACCEPT ANY OTHER WIRING CONNECTIONS SHOWN ARE FOR 230V WHEN 208V OPERATION IS REQUIRED REMOVE RED WIRE FROM CONNECTIONS SHOWN ARE FOR 380V CONNECTIONS SHOWN ARE FOR 575V WHEN 460V OPERATION IS REQUIRED REMOVE RED WIRE FROM REMOVE JUMPER WHEN INSTALLING ASCT ACCESSORY 230V TERMINAL AND CONNECT IT TO 208V TERMINAL 575V TERMINAL AND CONNECT IT TO 460V TERMINAL ya LINE BREAK INTERNAL OVERLOAD IOL UNIT MAY BE EVAPORATOR MOTOR CONNECTIONS 5 SHOWN ARE FOR SUPPLIED WITH EXTERNAL CONNECTIONS FOR IOL SHOWN IN INSET B FOR EXTERNAL OVERLOAD JUMPER BETWEEN LVT TERMINALS 1 AND G MUST BE REMOVED TYPICAL ROOM THERMOSTAT COLOR ABBR COLOR ABBR BLUE BL WHITE WH BLACK BK YELLOW YL BROWN BR GREEN GR RED RD LOW VOLTAGE TERMINAL BOARD HIGH VOLTAGE TERMINAL BLOCK CONTACTOR COMPRESSOR DISCONNECT SWITCH NOT SUPPLIED LOW VOLTAGE FUSE HIGH VOLTAGE FUSE NOT SUPPLIED W ANTISHORTCYCLE TIMER FIELD INSTALLED ACCESSORIES HIGH PRESSURE CUT OUT INTERNAL OVERLOAD LOW PRESSURE CUT OUT CONTROL POWER TRANSFORMER GROWNDING TERMINAL MOTOR WATER FLOW SWITCH TRANE NOT SUPPLIED 39010505 01 REV C TYPICAL WIRING SCWH SIWH 030 050 075 THREE PHASE PKG SVX14A EN 32 TRANE JSVH 34H 061 061 001 HMIS HM2S X008 ONIMI
27. PKG SVX14A EN UNIT MOUNTED T STAT OPENING BOTH SIDES POWER ENTRY BOTH SIDES CONTROL ENTRY BOTH SIDES 26 SERVICE CLEARANCE LEFT SIDE 26 SERVICE CLEARANCE RIGHT SIDE 18 SERVICE CLEARANCE REAR REAR RETURN e TRANE Installation Service Access 10 through 15 ton SCRH SCWH LATCH THIS PANEL GOES TO TOP ON NJHORIZONTAL AIR DISCHARGE CONFIGURATION WATER CONNECTION HEATER COIL THIS PANEL IS DISPOSED IF COMPLETE FRONT RETURN 15 DESIRED AIR FILTER TXV ACCESS ol 7 S HEATER ACCESS ol UNIT MOUNTED T STAT OPENING ACCESSORY HANDLE SS COMMAND BOX ACCESS REFRIGERANT WATER CONNECTIONS THIS PANEL GOES TO REAR RETURN OPENING IN CASE OF COMPLETE FRONT RETURN IS DESIRED OR IT IS DISPOSED IF 50 50 RETURN IS DESIRED REAR RETURN OPENING REFRIGERANT COMPONENTS SHIPPED w o PANEL ACCESS POWER CONTROL 10 12 amp 15 ton SCWH SRCH with side mounted fan configura tion field converted TXV ACCESS RIGHT SIDE UNIT MOUNTED T STAT OPENING ACCESSORY BOTH SIDES FRONT RETURN CONTROL BOX AND RIGHT SIDE CONDENSER FAN ACCESS REAR RETURN DRAIN CONNECTION BOTH SIDES AIR FILTER ACCESS BOTH SIDES SIGHT GLASS FILTER DRIER ACCESS RIGHT SIDE COMPRESSOR ACCESS 8 PKG SVX14A EN
28. RH Installation Receiving Checklist Complete the following checklist immediately after receiving unit shipment to detect possible shipping damage O Inspect individual cartons before accepting Check for rattles bent carton corners or other visible indications of shipping damage If a unit appears damaged inspect it immediately before accepting the shipment Make specific notations concerning the damage on the freight bill Do not refuse delivery Inspect the unit for concealed damage before it is 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 the receiving location It is the receiver s responsibility to provide reasonable evidence that concealed damage did not occur after delivery L1 Do not continue unpacking the shipment if it appears damaged Retain all internal packing cartons and crate Take photos of damaged material if possible 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 representative of the damage and arrange for repair Have the carrier inspect the damage before making any repairs to the unit Unit Storage Take precautions to prevent condensate from forming inside the ele
29. S a 58 REAR RETURN eit STANDARD em ea model 030 050 750 model 100 120 150 unit size discharge fanlocation comments 030 050 075 vertical CCW top standard horizontal CW top field converted 100 120 150 vertical CCW top standard vertical CW top field converted 9 horizontal CW top vertical CW rear horizontal CCW PKG SVX14A EN General The midrange models SCWH SCRH is a high efficiency vertical air condioner units have either front or top discharge configuration options and easy service access Unit construction is heavy gage steel with a baked enamel finish Available unit voltages are 208 3 60 230 3 60 460 3 60 and 575 3 60 Refrigeration Circuits Units are configured in single or double refrigeration circuits Each circuit consists of high efficiency scroll compressor mounted on rubber isolation grommets evaporator coils designed for optimum performance and efficiency with lanced fins and rifled tubing filter drier Evaporator Section The evaporator fan section consists of one or two forward curved centrifugal fans powered by a premium efficiency motor through an adjustable motor sheave and fixed diameter blower pulley Controls The standard control panel consists of a high voltage terminal block overload relays for each fan motor transformer 3 pole 24 volt contactors for eachmotor and compressor and a 5 second delay timer Remote thermostat cont
30. V WHEN 460V ESAS SECM WUG OPERATION IS REQUIRED REMOVE RED WIRE FROM 575V TERMINAL AND CONNECT IT TO 460V TERMINAL 230V TERMINAL AND CONNECT IT TO 208V TERMINAL LVT LOW VOLTAGE TERMINAL BOARD AVANT D EFFECTUER L ENTRETIEN FAUTE DE DECONNECTER LA SOURCE ELECTRIQUE AVANT D EFFECTUER L ENTRETIEN PEUT ENTRAINER DES BLESSURES CORPORELLES SEVERES OU LA MORT IMPORTANT USE COPPER CONDUCTORS ONLY TO PREVENT EQUIPMENT DAMAGE UNIT TERMINALS ARE NOT DESIGNED TO ACCEPT ANY OTHER WIRING lt REMOVE JUMPER AIR FLOW SWITCH TO CONNECT FIELD SUPPLIED REMOVE JUMPER WHEN INSTALLING ASCT ACCESSORY C1 T MAXIMUM EXTERNAL NOT TO EXCEED 24V 20VA TRANSFORME LOAD ON CONTROL SEE INTERCONNECTING WIRING BOOK HVT HIGH VOLTAGE TERMINAL BLOCK C CONTACTOR CPR COMPRESSOR DS DISCONNECT SWITCH NOT SUPPLIED FC LOW VOLTAGE FUSE FP HIGH COLOR ABBR COLOR ABBR BLUE BL WHITE WH BLACK YELLOW Yt BROWN BR GREEN GR RED RD VOLTAGE FUSE NOT SUPPLIED SCRH SIRH 030 050 075 X39010508 01 TYPICAL WIRING THREE PHASE 34 Q c c gt JSVHd JJYH1 2 1 061 041 001 HMIS HMOS 5 LON HOLIMS MOTI s31VM SNIONMOSO 405533900 OLOGEX ay ES g MIOTE TVNIWH31 FOVLTIOA NI349
31. WNIWYIL ASZS WOMJ JAOWIY OIYNOIY SI NOMVAIdO 409 ASZS HOF NMOHS SNOII93NN02 HOF JAV NMOHS SNOLO3NNOO gt 802 OL LOINNOD ONY WNIWYIL A0 Z 5 330438 WO SI NOLLYAIIO SLO3NNOOSIQ 31OW3N ONIGMONI 83MOd 21410313 TIY LOSNNOOSIG ABOZ N3HM A0 Z HO NMOHS SNOL23NNO2 E gt I39V130 5 2 SNIN IVM V V 5 OL 53330 YFINHOASNVAL 803 gt 10 ry 8 iml 09 0553226 TVNOIldO 1V3H CLVJH L1V3H LVLISOWYFHL TvOldAL i SNL SNL E M PIT SoS SNL 3dAL TO HOLOW MOlVHOdVA3 3AUVNS3LTY WOO VelOdvA3 4802 D E ke kwl lef Nd m ASZSC gt auf gt V 13SN SNOLdO 531 FIGVIVAY 3LVNM3LTV FLVOIGNI 53405012 3 INIT 1 FHL AG SINJNOdWOO 31VOIGNI SAINITLNO YO GNY SFANSOTONF 4 24 2 92 1V NMOHS S3HOIIWS G3HSVG SH3HIO 1314 FSIMYIHLO SSIINN Z SINIT Q3HSVO 1 20 SVH NMOGLNHS 14 440 GINYNL E TW HUM A
32. aintenance program Always disconnect electrical power to the unit before performing these procedures and heed all warnings and cautions A 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 A WARNING Hazardous Voltage Disconnect all electrical power including remote disconnects before servicing unit Follow proper lockout tagout procedures to ensure power cannot be inadvertently energized Failure to disconnect power before servicing can result in death or serious injury Periodic Maintenance Checklist L1 Inspect coil surface for cleanliness Clean as required referring to the Coil Cleaning section Annual Maintenance Checklist Perform all monthly maintenance inspections Perform seasonal startup checks Leak test refrigerant circuits Inspect contacts of fan motor contactors and relays Replace all worn contacts Clean and repaint any corroded surface Maintenance Note the following coil cleaning proce dures apply only to the outdoor condens ers Do not use these procedures for the reheat or evaporator coils Cleaning the Conde
33. balance at the unit disconnect switch does not exceed 2 0 faulty unit wiring is causing the imbalance Conduct a thorough inspection of the unit electrical wiring connections to locate the fault and make any repairs necessary A 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 safety precautions when exposed to live electrical components could result in death or serious injury A WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure power cannot be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury 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 19 e TRANE Installation Table 1 Model SCWH SCRHelectrical data evaporator standard motor evaporator oversized motor fan motor min circui in circuit MFS modei aie MES MCB min crt 5 Se 8 ampacit ampacity
34. cates a situation that may result in equipment or property damage only accidents Example Warnings and Cautions A WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure power cannot be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury 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 Common HVAC Acronyms For convenience a number of acronyms and abbreviations are used throughout this manual These acronyms are alphabetically listed and defined below CFM Cubic feet per minute CKT Circuit CV Constant volume CW Clockwise CCW Counterclockwise E A Exhaust air F A Fresh air HGBP Hot gas bypass HVAC Heating ventilation and air conditioning IGV Inlet guide vanes Inputs outputs Installation operation maintenance manual LH Left hand O A Outside air psig Pounds per square inch gauge pressure R A Return air RH Right hand RPM Revolutions per minute S A Supply air SZ Single zone unit airflow VAV Variable air volume w c Water column Special Note on Refrigeration Emissions World environmental scientists have concluded that ozone in our upper atmosphere is being
35. components perform these tasks Failure to follow all electrical components could result in death or serious injury BELT TENSION ADJUSTMENT TO INCREASE THE TENSION BELT M10 BOLT MIO NUT MOTOR BRACKET MOTOR BRACKET ALIGNMENT SEE NOTE 4 6 CHECK THE BELT TENSION THE BELT CAN BE DEPRESSED APPROXIMATELY 1 2 INCH WITH ONE FINGER BETWEEN THE FAN AND MOTOR PULLEY 0511 2659 29 e TRANE A WARNING Hazardous voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Troubleshooting Maintenance Use the following steps and procedures to help correct these common problems Problem The entire unit does not operate Possible cause 1 Power interruption 2 Thermostat not operating 3 Electrical panel a 24 volt transformer defective b loose wire Remedy 1 Check for blown fuses or tripped circuit breakers Replace or reset if necessary 2 Setting may be too high check unit and reset Thermostat may be out of calibration or otherwise defective replace 3 Correct as required Problem Fan runs but compressor does not start Possible cause 1 Low voltage 2 Remote thermostat 3 Compressor contactor open or burned 4 High pressure contr
36. converted 1 N 1 HANDLE HOT WATER STEAM 1 COIL ACCESSORY H s 9 pt ALUMINUM GRILL lt a 4 DISCHARGE LIQUID CONNECTIONS DRAIN CONNECTION BOTH SIDES m 0 3 4 BSP ee UNIT MOUNTED T STAT n OPENING ACCESSORY DISCHARGE REAR RETURN 7 OPENING p FTA WATER OUTLET POWER ENTRY 1 WATER INLET x FAST LATCH ALLEN KEY SIZE M6 76 COMMAND BOX 2 FORK LIFT SLOT WATER INLET OUTLET CONNECTIONS BOTH SIDES SCWH SCWHSCRH dimensions amp weight in Ibs unit shipping operating size B F G J K L M N R s weight weight 3 3189 6417 2224 565 1193 1431 1063 18 00 7 80 7 80 1560 15 63 2020 6 28 433 858 437 494 459 5 3641 7598 2401 773 1303 1565 1161 2031 1232 866 2098 1858 2420 710 543 638 7 1 592 555 PKG SVX14A EN 11 e TRANE Installation 7 5 tons horizontal discharge field converted vertical discharge SCWH SCRH 28 74 FAST LATCH ALLEN KEY SIZE M6 DISCHARGE LIQUID CONNECTIONS BOTH SIDES 10 63 4d 267 40 94 54 N
37. could result in a violent explosion which could result in death or serious Charging the Refrigerant System To completely charge the system charge gaseous refrigerant into the suction line shrader valve with the unit running However make sure that some refrigerant is present in each circuit before starting the compressors CAUTION Compressor Damage Do not allow liquid refrigerant to enter the suction line Excessive liquid accumulation in the liquid lines may result in compressor damage CAUTION Compressor Damage Never manually or automatically pump down below 7 psig This may cause the compressor to operate in a vacuum and result in compresor damage injury Table M MP 1 Normal operation condition mr high pressure 280 to 430 psig 320 to 570 psig 100 to 160 psig 5 10 10 F Table 2 Controls adjustment Control high pressure control air cooled amp 12 ton water cooled 624 17 5 psig 464 29 psig 275 5F 198 5 208 230 194 5F 135 12 15 208 230 221 5F 142 12 15 575 unit ton voltage motor windings thermostat standard motor only 28 PKG SVX14A EN Periodic Checklists Monthly Checklist The following checklist provides the recommended maintenance schedule to keep the unit running efficiently A WARNING Hazardous Voltage Disconnect all electrical power including remote disconnects before servicing unit Follow proper lockout tagout procedur
38. ctrical compartments and motors if the unit is stored before it is installed Service Access Maintain adequate clearances around and above the unit to ensure proper unit operationa nd allow sufficient service accesss Trane recommends 36 inches service access on all sides fo the unit Service access locations are shown in figures on pages 8 through 9 A WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure power cannot be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Installation Preparation Before installing the unit perform the following procedures to ensure proper unit operation 1 Verify the floor or foundation is level Shim or repair as necessary To ensure proper unit operation install the unit level in both horizontal axes 2 Allow adequate service and code clearances as recommended in Service Access section Position the unit and skid assembly in its final location Test lift the unit to determine exact unit balance and stability before hoisting it to the installation location See the Proper Lifting Procedure section for proper rigging procedures and cautions 3 Remove the skids from under the unit If you find internal damage file a claim immediately to the delivering carrier 4 Remove the protective shipping covers from the uni
39. d dryers are recommended Do not use solvents that have ozone depletion factors Properly dispose of used materials Take extra care to properly maintain all service equipment directly supporting refrigerant service work such as gauges hoses vacuum pumps and recycling equipment e Stay aware of unit enhancements conversion refrigerants compatible parts and manufacturer s recommendations that reduce refrigerant emissions and increase equipment operating efficiencies Follow specific manufacturer s guidelines for conversion of existing systems PKG SVX14A EN Maintenance e TRANE assist in reducing power generation emissions always attempt to improve equipment performance with improved maintenance and operations that will help conserve energy resources WARNING Confined Space Hazards Do not work confined spaces where sufficient quantities of refrigerant or other hazardous toxic or flammable gas may be leaking Refrigerant or other gases could displace available oxygen to breathe causing possible asphyxiation or other serious health risks Some gases may be flammable and or explosive Evacuate the area immediately and contactthe proper rescue or response authority Failure to take appropriate precautions or to react properly to a potential hazard could result in death or serious injury A WARNING Hazard of Explosion Use only dry nitrogen with a pressure regulator to pressurize
40. door coil 3 8 tube size face area sq ft rows fpf water condenser tube amp tube water connection in indoor fan belt driven quantity diameter x width motor motor frame size air filter 1 throwaway size quantity in refrigerant R 410A TXV control refrigerant charge Ckt 1 2 Ibs hot water coil 2 row 108 fpf 1 2 tubes face area sq ft Notes SCWH050 78 74 36 41 24 01 592 555 65290 12 28 2000 5 3 1 ZP57 4 98 41144 3 4 10 10 1 1 0 56 14 x 20 1 20 x 20 1 5 4 2 08 SCWH075 78 94 40 94 28 74 702 657 87570 11 6 3000 7 6 1 ZP83 7 13 3 168 3 4 NPT 9x9 1 2 0 56 18 x 24 2 7 8 3 27 SCWH100 5 120 SCWH150 91 54 95 47 95 47 65 75 65 75 80 31 29 52 29 52 29 52 1094 1027 1133 1063 1249 1172 116986 138204 167303 11 5 11 1 11 3 4000 4800 6000 10 2 12 5 14 8 2 2 2 ZP57 ZP67 ZP83 12 12 12 12 14 56 21168 21168 3 168 14 4NPT 1 1 4 11 4NPT 2 2 2 12 x 12 12 x 12 12 x 12 1120 1 3 0 1 3 0 56 56 56 18 x 24 3 12x24 1 24x24 2 oy oy 5 1 5 2 6 5 6 3 7 2 7 2 6 2 6 2 7 78 1 Net cooling capacity is rated at 95 F ambient 80 F entering dry bulb and 67 F entering wet bulb SCFM air condition 2 EER is rated at ARI condition 25 e TRANE Maintenance Procedures This section describes specific maintenance procedures that must be preformed as a part of the normal m
41. eath or serious injury Remedy 1 Correct as follows a clean b defrost using fan operation only c clean or replace filter d remove obstruction e check electrical system f adjust fan position Tighten set screw on fan wheel 2 Refer to original load calculations Recalculate heat gain or loss 3 Replace if necessary 4 Check refrigerant charge pressure with gauges If refrigerant is low recharge system 5 Reclaim excess refrigerant 6 Refer to thermostat operating instructions 7 Correct as follows a clean coil b verify drive is adjusted correctly c tighten fan on shaft 8 See that air is flowing and that damper is set properly 9 Reset high pressure cutout on inoperative circuit Check contactor in inoperative circuit Problem Unit short cycles Possible cause 1 Remote thermostat 2 Loose connection in electrical unit 3 Thermostat contacts fluttering 4 Air flow to evaporator is restricted 5 Insufficient charge Remedy 1 Repair or replace 2 Trace and repair 3 Repair or replace 4 Flush or blow dirt out of coil 5 Reclaim evacuate recharge per nameplate Problem Compressor starts and runs but fan does not run Possible cause 1 Faulty switch 2 Open fan motor coil circuit 3 Fan binding on shroud or venturi ring PKG SVX14A EN Remedy 1 Replace 2 Replace 3 Adjust fan mounting 31 BL BL
42. enance clearances around the unit are adequate See the Service Access section Unit Mounting shipping brackets on the compressor assembly and supply fan Component Overview the fan and motor sheaves aligned OCheck the belt tension for proper adjustment the fan rotates freely OTighten locking screws bearing set screws and sheaves bearing locking collars do not wobble when rotated all air filters are properly installed with consideration of size and air flow CiManually rotate the evaporator fan to ensure free movement Verify that all of the fan mounting hardware is tight Ductwork OWVerify that all ductwork conforms to NFPA 90A or 90B and all applicable local codes PKG SVX14A EN PKG SVX14A EN Installation e TRANE Unit Startup Procedures 1 Check all electrical connections for tightness 2 Be sure all unit accessories are properly set and installed 3 Model SCWH Verify condenser water piping is properly connected supply and return 4 Model SCRH Verify refrigerant piping is properly connected hot gas and liquid 5 Inspect all ductwork and duct connections 6 Check for proper belt tension 7 Check fan drive sheaves pulleys and bearings Unit Startup Checklist 1 Turn the thermostat to the OFF position 2 Engage power supply by closing power disconnect 3 Switch thermostat to fa
43. er and seek immediate medical attention Direct contact with liquid refrigerant may cause minor or moderate injury PKG SVX14A EN Refrigerant System Special Note on Refrigerant Emissions Follow the Trane recommended procedures on operation maintenance and service to ensure refrigerant conservation and emission reduction Also pay specific attention to the following Whenever removing refrigerant from equipment recover for reuse recycle reprocess reclaim or properly destroy it Always determine possible refrigerant recycling or reclaiming requirements before beginning recovery Ouestions about recovered refrigerants and acceptable refrigerant quality standards are addressed in ARI Standard 700 Use approved containment vessels and safety standards Comply with all applicable transportation standards when shipping refrigerant containers To minimize emissions while recovering refrigerant use recycling equipment Always attempt to use methods that pull the lowest possible system vacuum while recovering and condensing refrigerant into containment When leak checking with trace refrigerant and nitrogen use HCFC22 R22 rather than CFC12 R12 or any other fully halogenated refrigerants Be aware of any new leak test methods that eliminate refrigerant as a trace gas When cleaning system components or parts do not use CFC11 R11 or CFC113 R113 Refrigeration system clean up methods using filters an
44. er lockout tagout procedures to ensure the power can not be inadvertently en ergized When necessary to work with live electrical components have a qualified licensed electri cian or other individual who has been trained in handling live elec trical components perform these tasks Failure to follow all of the recommended safety warnings provided could result in death or serious injury A WARNING Rotating Components During installation testing servicing and troubleshooting of this product it may be necessary to measure the speed of rotating components Have a qualified or licensed service individual who has been properly trained in handling exposed rotating components perform these tasks Failure to follow all safety precautions when exposed to rotating components could result in death or serious injury 8 Check systems for proper operation and performance Observe unit in operation and check for unusual noise vibration belt and fan clearances e TRANE 24 Operation Sequence of Operation The thermostat controls the unit operation It has both manual and automatic switches so the thermostat maintains desired comfort levels The fan switch allows manual selection of the fan speed using the On or Auto setting With the switch set in the On position the evaporator fan runs continously independent from the thermostat temperature setting The Auto position cycles the evaporator fan on and off
45. es to ensure power cannot be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury 1 Inspect unit air filters Clean or replace if airflow is blocked or if filters are dirty 2 Inspect coils for icing Icing on the coils may indicate low airflow supply restricted airflow from dirty fins 3 Check the fan belt condition and tension Adjust tension if belt is floppy or squeals continually 4 Check and record operating pressures Semi Annual Maintenance 1 Verify the fan motor is properly aligned and bolted tight to the motor frame 2 Lubricate fan bearings 3 With power disconnected manually rotate the fan wheel to check for obstructions in the housing or A WARNING Rotating Components During installation testing servicing and troubleshooting of this product it may be necessary to measure the speed of rotating components Have a qualified or licensed service individual who has been properly trained in handling exposed rotating components perform these tasks Failure to follow all safety precautions when exposed to rotating components could result in death or serious injury PKG SVX14A EN Maintenance interference with fan blades Remove obstructions and debris Center the fan wheel if necessary 4 Check the fan assembly sheave alignment Tighten set screws to their proper torques Note Perform this procedure monthly if the unit is
46. g Optional OComplete the field wiring connections Note All field installed wiring must comply with NEC and applicable local codes Fan Discharge Conversion Complete the steps below to convert the fan discharge from vertical to horizontal 1 Remove all mid and top fan section panels 2 Loosen the brackets inside the unit that clamp the mid and fan sections together 3 Remove the control box cover and disconnect the motor power wires Feed wires up through the unit and secure out of the way until rotation is complete 4 Rotate the fan section to desired position 5 Re route the motor power wires back to the control box Ensure all wiring is free and not routed over any sharp edges 6 Reconnect the motor power wires per the unit wiring diagram 7 Bolt and or clamp all brackets back into place 8 Replace control box cover and all exterior panels 9 Verify the fan rotation and motor amp draw Plenum Installation 1 Uncrate the plenum and accessory bag 2 Rotate the evaporator blower to the vertical discharge configuration 3 Apply the soft gasket provided around the aluminum frame on top of the unit as shown in Figure 1 4 Using a screwdriver tighten the self drilling screws as shown in Figure 1 Be sure to tighten all screws on the rear right and left sides through the pilot holes on the plenum panels 5 When installation is complete adjust the motor pulley and the discharge
47. itrogen Before installing unit piping momentarily depress either the suction or discharge line access valve to verify that the holding charge has not been lost If nitrogen does not escape when depressing the access valve leak test the entire refrigerant system to determine the source of loss The charge is contained by a continuous loop of both hot gas and liquid lines You must cut the loop for connection to discharge and liquid lines See Figure l MR 1 AN WARNING Hazard of Explosion and Deadly Gases Never solder braze or weld on refrigerant lines or any unit com ponents that are above atmo spheric pressure or where refrigerant may be present Always remove refrigerant by fol lowing the guidelines estab lished by the EPA Federal Clean Air Act or other state or local codes as appropriate After refrig erant removal use dry nitrogen to bring system back to atmospheric pressure before opening system for repairs Mixtures of refriger ants and air under pressure may become combustible in the pres ence of an ignition source leading to an explosion Excessive heat from soldering brazing or weld ing with refrigerant vapors present can form highly toxic gases and extremely corrosive acids Failure to follow all proper safe refrigerant handling prac tices could result in death or seri ous injury Installation Brazing Procedures Proper brazing techniques are essential when installing refrigerant piping Kee
48. n position and adjust temperature setting below room temperature Evaporator fan should start 4 Check evaporator section for proper operation 5 Switch thermostat to cool position and adjust temperature setting to below room temperature The evaporator fan and compressor s should start Note These units are equipped with high efficiency scroll compressors Check for proper scroll rotation prior to operating unit WARNING Hazardous voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury 6 Check the evaporator fan for proper rotation If fan rotation is incorrect switch thermostat to Off position and disconnect power Reverse two phase leads at disconnect and return back to Step 1 of startup 7 Allow unit to run until all system temperatures and pressures stabilize A WARNING Hazardous Service Procedures The maintenance and trouble shooting procedures recom mended in this section of the manual could result in exposure to electrical mechanical or other po tential safety hazards Always refer to the safety warnings provided throughout this manual concerning these procedures When possible disconnect all electrical power in cluding remote disconnects before servicing Follow prop
49. nect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure power cannot be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury PKG SVX14A EN Installation e TRANE Water Piping Condenser Connections Note To prevent water damage install piping drain and vent plugs Condenser water piping knockouts are in the lower left end panel If necessary remove insulation to gain access All field installed piping must conform to applicable local state and federal codes To complete condenser water connections follow the procedure below 1 Remove back panel to access the water connection fittings 2 Attach the water supply line to the inlet connection and the return line to the outlet connection The water connection fittings are copper so exercise extreme care when connecting steel piping to copper fittings 3 Ensure that water piping is aligned to the unit connection fittings Failure to align piping could cause stripped threads leakage and possible unit failure 4 Connection to the unit water piping requires a backing wrench to prevent distortion of connecting tubing Apply backing wrench to water connection points on unit Condensate Drain Connections Install a water regulating valve in the water supply line to maintainhead pressure when operating with city water of varying temperat
50. nser Coils Clean the coil at least once each year or more frequently if located in a dirty environment to help maintain proper unit operating efficiency High discharge pressures are a good indication that the coil needs cleaning Follow the detergent manufacturer instructions as closely as possible to avoid potential coil damage A 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 protective 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 To clean the refrigerant coil use a soft brush and sprayer such as a garden pump up or high pressure type In addition use a quality detergent like SPREX AC OAKITE 161 or OAKITE 166 and COILOX Note If detergent is strongly alkaline i e has a pH value greater that 8 5 after mixing you must add an aluminum corrosion inhibitor WARNING Hazardous Voltage Disconnect all electrical power including remote disconnects before servicing unit Follow proper lockout tagout procedures to ensure power cannot be inadvertently energized Failure to disconnect power before servicing can result in death or serio
51. nsions amp weights in Ibs size A B C D weight 7 5 ton 24 10 ton 58 72 50 98 6 95 59 51 49 12 ton 58 72 50 98 6 95 59 51 49 Hot water coil 15 ton 73 29 63 98 8 52 74 07 55 10 thru 15 ton units 0 39 PA 2 8 1518 g e igi 0 43 BLOCKOFF 5 5 DISASSEMBLED 5 90 PKG SVX14A EN Duct Connections 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 Make duct connections to the unit with a flexible material such as heavy canvas a fire hazard exists Trane recommends using Flexweave 1000 type FW30 or equivalent canvas Use three inches for the return duct and three inches for the discharge duct Keep the material loose to absorb fan vibration Run the ductwork straight from the opening for a minimum ofthree fan diameters Do not make abrupt turns or transitions near the unit due to increased noise and excessive static losses Use elbows with splitters or turning vanes to minimize static losses Poorly constructed turning vanes may cause airflow generated noise Check total external static pressures against fan characteristics to be sure the required airflow is available throughout the ductwork A WARNING Hazardous Voltage Discon
52. ol cutting out unit 5 Refrigerant leak no gas 6 Loose or defective wires 7 Compressor shorted open or burned 8 Defective compressor Remedy 1 Check power supply for voltage outside the acceptable voltage range 2 Check the control unit for loose wires Firm any loose connections 3 Replace 4 Check for loose wire connection broken or burned contacts If defective replace 5 Locate leak and repair Recharge unit 6 Tug on wires to see if they will separate from connections Replace terminals if necessary 7 Check for shorts opens and grounded Remove and replace compressor 8 Remove and replace Problem Unit held off by safety Possible cause 1 Unit cutout on high pressure control set at 385 psig 2 Refrigerant leak 3 Air restriction dirty coils 4 Partial restriction in refrigerant system 5 High pressure control 6 TXV power element charge loss 7 Loose connection in electrical unit Remedy 1 Adjust tubes by bending slightly to firm position without touching other unit parts 2 Level unit base Fully support base 3 Check and tighten loose screws 4 Tighten screws on fan wheel shaft 5 Adjust wheel position on motor shaft 6 Replace fan motor 7 Replace fan bearing Problem Noisy operation Possible cause 1 Copper tubing vibrating 2 Machine vibrating out of level 30 Remedy 2 See if unit is low on refrigerant charge Repair leak and recharge unit 3 Verify
53. oor or foundation is level solid and sufficient to support the unit and accessory weights Level or repair the floor before positioning the unit if neccesary Allow minimum recommended clearances for routine maintenance and service Refer to unit submittals for dimensions Allow three fan diameters above the unit for the discharge ductwork Return air enters the rear of the unit and conditioned supply air discharges through the top Electrical connection knockouts are on the top left side of the unit Allow adequate space for piping access and panel removal Condenser water piping refrigerant piping and condensate drain connections are on the lower left end panel L Electrical supply power must meet specific balance and voltage requirements as described in the Electrical Requirements section Water cooled units only The installer is responsible for providing a condenser main standby water pump cooling tower pressure gauges strainers and all components for waterside piping See the Water Piping section for general waterside recommendations Air cooled units only The installer is responsible for providing and installing the remote air cooled condenser and refrigerant piping including filter driers Receiving and Handling Shipping Package Midrange units ship assembled on skids Units ship assembled piped and charged with either R410a model SCWH or a dry nitrogen charge model SC
54. p the following factors in mind when making sweat connections 1 When heating copper in the presence of air copper oxide forms To prevent copper oxide from forming inside the tubing during brazing sweep an inert gas such as dry nitrogen through the tubing Nitrogen displaces air in the tubing and prevents oxidation of interior surfaces A nitrogen flow of one to three cubic feet per minute is sufficient to displace the air Use a pressure regulating valve or flow meter to control the flow 2 Ensure tubing surfaces that require brazing are clean and the ends of the tubes are carefully reamed to remove any burrs 3 Make sure the inner and outer tubes of the joint are symmetrical and have a close clearance providing an easy slip fit If the joint is too loose the tensile strength of the connection will be significantly reduced Make the overlap distance equal to the inner tube diameter 4 Wrap the body of each refrigerant line component with a wet cloth to keep it cool during brazing Excessive heat can damage the components 5 If using flux apply it sparingly to the joint Excess flux will contaminate the refrigerant system 6 Apply heat evenly over the length and circumference of the joint making sure the entire joint becomes hot enough to melt the brazing material Compressor Discharge TE 7 Begin brazing when the joint is hot enough to melt the brazing rod The hot copper tubing not the flame
55. rols are field installed Field Installed Accesories These items ship separately for field installation steam coil hot water coil plenum oversized motors remote thermostat Note Application of the above options and or accessories may require field adjustment of fan speeds to ensure proper airflow and performance Unit Nameplate The unit nameplate identifies the unit model number appropriate service literature and wiring diagrm numbers It is mounted on the control panel door Reference this information when making inquires or ordering parts or literature PKG SVX14A EN Installation e TRANE Refrigerant Handling Procedures Environmental Accountability Policy Trane urges that all HVAC servicers to make every effort to eliminate if possible or vigorously reduce the emission of CFC HCFC and HFC refrigerants to the atmosphere Always act in a responsible manner to conserve refrigerants for continued usage even when acceptable alternatives are available Recover and Recycle Refrigerants Never release refrigerant to the atmosphere Always recover and or recycle refrigerant for reuse reprocessing reclaimed or properly dispose if removing from equipment Always determine the recycle or reclaim requirements of the refrigerant before beginning the recovery procedure Obtain a chemical analysis of the refrigerant if necessary Questions about recovered refrigerant and acceptable refrigerant q
56. t 5 Verify the compressor isolator shipping brackets are removed and the isolators are properly tightened for operation PKG SVX14A EN Installation Service Access 3 through 7 5 ton SCRH SCWH LATCH THIS PANEL GOES TO TOP ON HORIZONTAL AIR DISCHARGE CONFIGURATION WATER CONNECTION HEATER COIL HEATER d ACCESS PROVIDED DISASSEMBLED FOR FIELD INSTALLED REAR RETURN P AIR FILTER TXV HANDLE ACCESS _ UNIT MOUNTED 5 OPENING ACCESSORY lt 2 REFRIGERANT WATER S CONNECTIONS ALUMINUM GRILL STANDARD REAR RETURN OPENING SHIPPED W PANEL THIS PANEL GOES TO FRONT RETURN OPENING IN CASE OF COMPLETE REAR RETURN IS DESIRED OR IT IS DISPOSED IF 50 50 RETURN IS DESIRED REFRIGERANT COMPONENTS ACCESS POWER CONTROL ENTRY COMMAND BOX ACCESS 10 through 15 ton SCWH SRCH with top mounted fan configuration FAN ACCESS COIL ELECTRIC HEATER ACCESS FRONT RETURN MOTOR DRIVE ACCESS RIGHT SIDE CESS B3 TXV ACCESS AT RIGHT SIDE 9 9 CONTROL amp AIR FILTER ACCESS BOTH SIDES 26 SERVICE CLEARANCE RIGHT SIDE DRAIN CONNECTION BOTH SIDES 42 SERVICE CLEARANCE FRONT 26 SERVICE CLEARANCI COMPRESSOR ACCESS LEFT SIDE SIGHT GLASS FILTER DRIER ACCESS RIGHT SIDE
57. the unit Do not use acetylene oxygen compressed air or mixtures containing them Do not use mixtures of a hydrogen containing refrigerant and air above atmospheric pressure for pressure testing as they may become flammable and could result in an explosion Refrigerant when used as a trace gas should only be mixed with dry nitrogen for pressurizing units Failure to follow these recommendations could result in death serious injury equipment or property only damage A WARNING Leak Testing Do not exceed 200 psig when leak testing system Failure to follow these instructions could result in an explosion causing death or serious injury In the event of required system repair leak test the liquid line evaporator coil and suction line at pressures dictated by local codes and using the following guidelines 1 Charge enough refrigerant and dry nitrogen into the system to raise the pressure to 100 psig 2 Use a halogen leak detector halide torch or soap bubbles to check for leaks Check interconnecting piping joints the evaporator coil connections and all accessory connections 3 If a leak is detected release the test pressure break the connections and reassemble it as a new joint using proper brazing techniques 4 If no leak is detected use nitrogen to increase the test pressure to 150 psig and repeat the leak test Also use soap bubbles to check for leaks when nitrogen is added 5 Retest the s
58. uality standards are addressed in ARI Standard 700 Refrigerant Handling and Safety Consult the manufacturer s material safety data sheet MSDS for information on refrigerant handling to fully understand health safety storage handling and disposal requirements Use the approved containment vessels and refer to appropriate safety standards Comply with all applicable transportation standards when shipping refrigerant containers Service Equipment and Procedures To minimize refrigerant emissions while recovering refrigerant use the manufacturer s recommended recycling equipment per the MSDS Use equipment and methods which will pull the lowest possible system vacuum while recovering and condensing refrigerant Equipment capable of pulling a vacuum of less than 1 000 microns of mercury is recommended Do not open the unit to the atmosphere for service work until refrigerant is fully removed recovered When leak testing with trace refrigerant and nitrogen use HCFC 22 R 22 rather than CFC 12 R 12 or any other fully halogenated refrigerant Be aware of any new leak test methods which may eliminate refrigerants as a trace gas Perform evacuation prior to charging with a vacuum pump capable of pulling a vacuum of 1 000 microns of mercury or less Let the unit stand for 12 hours and with the vacuum not rising above 2 500 microns of mercury A rise above 2 500 microns of mercury indicates a leak test is required to locate
59. ure These units require a minimum water pressure of 15 psig and will operate at a maximum of 400 psig Provide safeguards against cold weather drain line freeze Cooling Tower Piping Cooling tower control affects the unit cycle rates Condenser water temperature swings from 10 15 F may cause excessive compressor water valve and unit cycling Be sure to set the tower controls to minimize compressor unit cycling The cooling tower system requires a separate drain in the water supply line for service and repair Water Temperature Requirements Install a water regulating valve in the water supply line to maintain head pressure when operating with water of varying temperature The valve modulates condenser water flow to control condensing pressure The valve opens or closes in response to compressor discharge pressure as sensed by its capillary line connection iin the liquid line shrader valve When the valve is properly installed water flow automatically decreases as discharge pressure falls and increases as discharge pressure rises Field installation of the water regulating valve assembly requires one valve for each refrigeration circuit 17 e TRANE Refrigerant Piping Air Cooled Units Only Reference industry recommendations for air cooled unit refrigerant piping If suspending piping from the building use isolation hangers to prevent vibration transmission Air cooled units ship with a holding charge of n
60. us injury Coil Cleaning Procedure 1 Disconnect power to the unit 2 Remove panels from the unit to gain access to the coil 3 Use a soft brush to remove loose dirt and debris form both sides of the coil 4 Straighten coil fins with fin comb as required 5 Mix the detergent with water according to the manufacturers instructions Observe all recommendations of the cleanser manufacturer The coil cleanser manufacturer s recommendations warnings and cautions will at all times take precedence to these instructions 1 Place solution in the sprayer Be sure to follow these guidelines if using a high pressure sprayer a Keep minimum nozzle spray angle 15 b Spray solution at a 90 angle to the coil face c Keep sprayer nozzle at least six inches from the coil d Sprayer pressure must not exceed 600 psi 2 Spray leaving air side of the coil first then spray the entering air side of the coil Allow the detergent and water solution to stand on the coil for five minutes 3 Rinse both sides of the coil with cool clean water 4 Inspect the coil If it still appears dirty repeat the cleaning procedure 5 Reinstall all unit components and panels and restore electrical power and gas supply to the unit A CAUTION Freezing Temperatures Do not allow liquid refrigerant to come into contact with the skin If it does treat the injury similar to frostbite Slowly warm the ffected area with lukewarm wat
61. ystem to make sure new connections are solid 6 If a leak is suspected after the system has been fully charged with refrigerant use a halogen leak detector halide torch or soap bubbles to check for leaks Refrigerant Evacuation For field evacuation use a rotary style vacuum pump capable of pulling a vacuum of 100 microns or less When connecting the vacuum pump to a refrigeration system it is important to manifold the pump to both the high and low side of the system Follow the pump manufacturer s directions A WARNING Use of Pressure Regulator Valves Gauges Always use pressure regulators valves and gauges to control drum and line pressures when pressure testing equipment Failure to follow these instructions could result in an explosion causing death serious injury or equipment damage 27 e TRANE Maintenance CAUTION Motor Winding Damage Do not use a megohm meter or apply greater than 50 VDC to a compressor motor winding while it is under a deep vacuum Voltage sparkover may cause damage to the motor windings A WARNING Hazardous Pressures If a heat source is required to raise the tank pressure during removal of refrigerant from cylinders use only warm water or heat blankets to raise the tank temperature Do not exceed a temperature of 150 F Do not under any circumstances apply direct flame to any portion of the cylinder Failure to follow these safety precautions

Trane SCRH Air Conditioner User Manual

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