York MA User's Manual
Contents
1. em y img Up Flow Down Flow FIGURE 1 Typical Installation with MC or FC Evaporator Coil DOWNFLOW AND HORIZONTAL CONVERSION These air handler units are supplied ready to be installed in a upflow downflow and left or right hand horizontal position If the unit is to be installed with an evaporator coil refer to Figure 1 for unit positioning information TIE PLATE TOP PLATE UPFLOW amp HORIZONTAL APPLICATIONS DOWNFLOW APPLICATION AIR HANDLER FIGURE 2 Coil and Air Handler Attachment Details AIR HANDLER AND COIL UPFLOW AND HORIZONTAL INSTRUCTIONS 1 Apply neoprene gasket to top of coil 2 Position blower casing over coil opening NOTE Tie plate and screws are provided with coils 3 Attach tie plate to casings of air handler and coil using screws 4 Remove blower access panel 5 Fasten duct flanges of coil to duct flanges of air handler with screws See Figure 2 6 Secure base of air handler to top of coil using screws 7 Complete electrical and blower speed connections as outlined in other sections of this document 8 Reposition and replace blower access panel Unitary Products Group 262675 UIM A 0806 d Horizontal Right Horizontal Left AIR HANDLER AND COIL DOWNFLOW INSTRUCTIONS 1 Positi2. MODULAR NON VARIABLE SPEED AIR HANDLERS MODELS MA gt AS ee cul m n A ion 4 _ A A AA di Y E AA EM AA A A A d A A YA aA e A 0 M A A SS ZEE XA E y o b MEE NM 42M leat 1 M ll LO 4 I 83 1 hLA RG EZ 28 WA SA 4 Pai NHN 7 Y 3 2M EM Y A A OO GA OD AE A A Ul gt SN D N LEM A EMEN WEN ee RR WOE ARD IMEEM DX A ell OCC ClO SS N IM NM Y 5BE Z2 NM LEM 0 1L 10 1L 5D A DN LL LLL OL LLL A EC LN EM ww EA Z MY MOM MY AA LAW A y B0 ui 0 A WM AM DUM 1 0 A LA 11 IM 1 LOU LH EM 88 1 ll SA A A A El M EM w j L I 2 2202 Iup LL aO L Mu B I L3 Ul 428 0L le a SO IM M I A 1 wu E M Q 30 LEES e PoAoO 0 D m 42 m n 17D CC M 0 3 3xdwwm Ey ww A gu A MS UU EM MM 3 5 Otis I LIES 00 Lu GM eee T 1 A a GM A EE A LL L A A A gt A A NELLE A S P 8L UP nr ik 000 REGISTRA ISO 9001 Certified Quality Management System m C CZ pa LIST OF SECTIONS GENERAL oirr 02 veu as econo de da e ed E sewer ok 1 REQUIRED CONTROL SET UP 6 SARETY accio tesi eo feee EEr ben das 1 LINE POWER CONNECTIONS coco 7 UNIT INSTALLATION ooo 2 BLOWER SPEED CONNECTIONS 0 0c ee eee e eee eee 8 ELECTRIC HEATER INSTALLATION leeren 5 UNIT DATA cux a ERE ah nna rac CR RU een coe dcs
3. 2 Maintenance and servicing access minimum 36 from front of unit recommended for blower motor coil replacement 3 Condensate drain lines routed to clear filter and panel access Filter removal minimum 36 recommended 5 A combustible floor base accessory is available for downflow applications of this unit if required by local code LOCATION Location is usually predetermined Check with owner s or dealer s installation plans If location has not been decided consider the follow ing in choosing a suitable location 1 Select a location with adequate structural support space for ser vice access clearance for air return and supply duct connections 2 Use hanging brackets to wall mount unit as shown 3 Normal operating sound levels may be objectionable if the air han dler is placed directly over some rooms such as bedrooms study etc 4 Select a location that will permit installation of condensate line to an open drain or outdoors allowing condensate to drain away from structure 5 When an evaporator coil is installed in an attic or above a finished ceiling an auxiliary drain pan should be provided under the air handler as is specified by most local building codes 6 Proper electrical supply must be available NOTE In severe high humidity high temperature indoor unit environ ments seal completely with adequate fiberglass insulation using vapor barrier on the outside Unitary Products Group
4. 9 LOW VOLTAGE CONTROL CONNECTIONS 5 MAINTENANCE ocurra cra ete rete dan 15 LIST OF FIGURES Typical Installation with MC or FC Evaporator Coil 3 460V Line Power Connections 0000 eee eee eee 8 Coil and Air Handler Attachment Details 3 Blower Speed Connections 000 cece eee eee ees 8 Dimensions amp Duct Connection Dimensions 4 460V Blower Speed Connections 000 eee eee 8 Typical Horizontal Installation 00000 eee eee ee 5 Cooling Models with Electric Heat Wiring 15 Control Board ua i ddr zog E ar mo Ed ba 5 Two Stage Cooling Wiring 0 0 eee 15 Line Power Connections 0 00 c eee eee 8 LIST OF TABLES DIMENSIONS 4 Electrical Data For Single Source Power Supply Low Voltage Connections 2 0000 c cece eee 6 Copper Wire 1 208 230 1 60 0000 0 ee eee 11 Fault Codes 6 Electrical Data 3 208 230 3 60 o oooooooooooooooooo 11 Low Fan Control Inputs cece drm unite Gee ER RERO SCR e anos 7 Electrical Data For Multi Source Power Supply Blower Delays usu usurae di CR CER aed a ric eas al dca ees 7 Copper Wire 3 208 230 3 60 o ooooooooommmmmmmmmmooo 12 Heat GVA Sa oes eae aa ee EN 7 Electrical Data For Single Source Power Supply Physical
5. AWG as a at a wi s w 8 rasa mr ms p 5s a 9 9 mess zi eat 983 3 m AHKOGS0i808 x 4HKossorgms 37 420 484 45 39 8 8 LEER 33 as 98 589 9 9 3 se can ee 121 R 3r 488 88 4 8 8 1 O C P Over Current Protection device must be HACR type Circuit Breaker or Time Delay fuse 2 Heaters are 3 Phase TABLE 17 Electrical Data 460 3 60 Models Models Eee SEES ES KW MBH Wi Only W2 Only Wi WZ memes o9 Mei 38 32 88 88 38 e AHROSSOTO8 05 Med 88 32 88 95 98 3s az es ss 36 4HK06501046 0 5 Med 3 28 20DN41 4HK06501546 0 5 reses EEE RE LA LE INN TABLE 18 Electrical Data For Single Source Power Supply Copper Wire 3 460 3 60 Field Wiring MA Heater eni 1 Wire Size AWG Models Models Min Circuit Ampacity Max O C P Amps Type 480V 480V 480V 12BN44 4HK06501046 046 17 4 acu o INES LL K06501046 19 1 20041 4HK06501546 LU E CS IE A 8 1 OCP Over Current Protection device must be HACR type Circuit Breaker or Time Delay fuse 3 _ itary Products Group 262675 UIM A 0806 TABLE 19 Air Flow Data 60 Hz Models 230 460 Volt 230 460 Volt 60 Hz Models Models Blower Motor 1 MA MC Speed CFM O External Static Pressure IWC oe or o2 os o4 os OS NOT NOSE 57 964 en 17 0
6. C for air conditioners and HP for heat pumps 5 To change quantity of heat during HP defrost cycle Reverse connections at W1 amp W2 on Air Handler Control Board SECTION X MAINTENANCE LUBRICATION Filters must be cleaned or replaced when they become dirty Inspect at The bearings of the blower motor are permanently lubricated least once per month The frequency of cleaning depends upon the hours of operation and the local atmospheric conditions Clean filters keep unit efficiency high Unitary Products Group 15 NOTES Subject to change without notice Printed in U S A 262675 UIM A 0806 Copyright O by York International Corp 2006 All rights reserved Supersedes 170341 UIM C 0806 Unitary 5005 Norman Product York OK Group Drive 73069
7. Power Connections SECTION VIII BLOWER SPEED CONNECTIONS All air handlers contain 3 speed blower motors which are prewired to the control board FACTORY WIRED TO TRANSFORMER CAP FACTORY WIRED TO FAN MOTOR RELAY TERMINAL ON CONTROL BOARD Adjust blower motor speed to provide airflow within the minimum and maximum limits approved for evaporator coil electric heat and outdoor unit Speed tap adjustments are made at the motor terminal block See Figure 8 or 9 Airflow data is shown in Tables 19 amp 20 Connect motor wires to motor speed tap receptacle for speed desired See wiring label for motor wiring details 230 VOLT P O MED Y BLOWER MOTOR FIGURE 8 Blower Speed Connections ORG TAPE END amp CAP WITH WIRE NUT MEDIUM 460 VOLT BLOWER MOTOR FIGURE 9 460V Blower Speed Connections 8 Unitary Products Group 262675 UIM A 0806 SECTION IX UNIT DATA TABLE 7 Physical and Electrical Data Models MA 08B21 12B21 12B41 14D21 Blower Diameter x Wid 10 10 1 4 HP 3 4 HP 3 4 HP 1 2 HP Nominal RPM 1075 1075 1075 1075 2087230 2087230 2087230 Amps E DISPOSABLE OR PERMANENT Filter Size 16x20x1 16x20x1 16 x 20 x 1 22x20x 1 Permanent a Kit 1PF0601BK 1PF0601BK 1PF0601BK 1PFO603BK Filter Raek Al Rack 1FR0617 1FR0617 1FR0617 1FR0624 EE Uses Operating Weight Ibs 128 122 132 126 132 126 162 156 Models MA 16C21 16C41 20D21 20D41 Blower Diameter x Width 10x 10 10x 10 11 x 10 11
8. and Electrical Data 0 ccc eee eee 9 Copper Wire 3 208 230 3 60 0 cece eee 12 Electrical Data Cooling Only 60 Hz 208 230 9 Electrical Data 460 3 60 0 ee 12 Electrical Data Cooling Only 60 Hz 460 9 Electrical Data For Single Source Power Supply Conversi n Table suaves teenage bugs ad tee dda ee 9 Copper Wire 3 460 3 60 2 0020 12 Electrical Data 1 208 230 1 60 n nananana 10 Air Flow Data 60 Hz Models 230 amp 460 Volt 13 Electrical Data For Multi Source Power Supply Air Flow Data 60 Hz Models 208 Volt 14 Copper Wire 1 208 230 1 60 0 eee 10 SECTION I GENERAL This modular air handler provides the flexibility for installation in any upflow downflow or horizontal application These versatile models may be used for cooling or heat pump operation with or without electric heat A BRAND LABEL available from Distribution may be applied to the center of the blower access panel The unit can be positioned for bottom return air in the upflow position top return air in the downflow position and right or left return in the hor izontal position Top and side power wiring and control wiring accessible screw termi nals for control wiring and easy to install electric heaters all combine to make the installation easy and minimize installation cost SECTIO
9. side panel Refer to Figure 3 Unitary Products Group BLOWER RELAY P2 US O SPARE JUMPER Remove desired knockout and pierce foil faced insulation to allow wir ing to pass through Use as small of a hole as possible to minimize air leakage Install a 7 8 plastic bushing in the selected hole and keep low voltage wiring as short as possible inside the control box To further minimize air leakage seal the wiring entry point at the outside of the unit The field wiring is to be connected at the screw terminals of the control board Refer to Figures 10 amp 11 262675 UIM A 0806 NOTE All wiring must comply with local and national electrical code requirements Read and heed all unit caution labels NOTE It is possible to vary the amount of electric heat turned on during the defrost cycle of a heat pump Standard wiring will only bring on the first stage of electric heat during defrost See Heat Output and Limit Connections and Table 6 for additional information on heat during defrost cycle TABLE 2 Low Voltage Connections Terminal Signal Gmmew A 28 VA0 ponerse Continuous Fan operation Y Y2 Second or full stage compressor operation y1 First stage compressor Not used with outdoor units operation having one stage compressors W2 Second stage heat operation A W1 First stage heat operation DJ 24 VAC will be present at this terminal when the MODE jumper is in the AC position Thi
10. 783 8394 9668 90 4HK16502006 105 00 4HK16501506 A IN 84 25 MES pw A E a3 4HKi65025006 100 n7 18425 1285 1860 1 1 O C P Over Current Protection device must be HACR type Circuit Breaker or Time Delay fuse May be 0 no breaker or 1 with breaker 14DN21 16CN21 20DN21 TABLE 14 Electrical Data 3 208 230 3 60 Total Total Heat KW Staging nwa renee id sped e T un 088 4HK06501025 72 6 26 eee 72 96 72 96 72 96 a wer ra ae mea i 9s T2 ae 72 08 CU MEIN Mes 72 08 008 es 72 se 72 os 72 08 4HKOG501525 Cass os vas re ar sr es ma vee ra ee a aooo 05 Wed Tz 98 ee e 2 os 72 ss 72 oe 186 Lewes o5 w es ara er ar es 2 ves ira ves e EN 295 72 08 72 95 AK o5 285 200 ua akez 0s Mai 380 260 S4 614 90 320 380 240 380 240 1 See conversion Table 10 Unitary Products Group A 262675 UIM A 0806 TABLE 15 Electrical Data For Multi Source Power Supply Copper Wire 3 208 230 3 60 Min Circuit ELI Max O C P Pepo 75 C Wire Size AWG ed Ls I mb p mw Dm om o m m 1 O C P Over Current Protection device must be HACR type Circuit Breaker or Time Delay fuse TABLE 16 Electrical Data For Single Source Power Supply Copper Wire 3 208 230 3 60 Heater Field Wiring Heat Kit 5 MA Three Phase ee Min Circuit Ampacity aa O C P XN Ax 5 C Wire Size
11. 88 780 ceo S68 447 386 a4 892 300 1199 1043 887 731 576 420 MC30B H ss 8889 70 738 128 oes eee ee Te ss 761 878 Sed 761 616 wr 926 Mo420 H T ee po pe pm pss Der s NNNM 370 MC48D H eee eee a 866 995 140 863 780 M048D H 17 84 z N Z WN gt ol ai gt oO 264 170 144 38 37 43 953 821 751 1033 13 EE NI ai gt oO co A ol N o gt 00 co O 127 87 67 52 726 O O O1 C1 NO O 19 1465 1406 7 NO 5 amp 6 4 N o Z Z a a gt gt gt gt eue gt gt 33 al O 00 03 92 A Z Z wo o gt gt 81 5 445 1328 1254 ae O High 200 MOOD 1499 1416 2326 2235 2192 2107 2027 1906 1786 1538 1469 1368 2326 2235 2192 2107 2027 PE 1295 MOBI 1558 1498 1369 1245 1 Includes return air filter coil and 10kW electric heater All MA series air handler units are UL Listed up to 0 50 w c external static pressure including air filter wet coil and largest KW size heater Unitary Products Group 262675 UIM A 0806 TABLE 20 Air Flow Data 60 Hz Models 208 Volt E gt O 1 Models Models Blower Motor Speed As MC18B H 08B 1039 MC24B H LE 1444 1101 MC30B H 12B Wed tow fe 1983 1529 1275 tow prm 1266 tow 8 High 1564
12. 92 258 28 378 88 75 56 Lee os War 72 08 208 325 oe 48 Tz 98 72 96 amemus os Wei Tos Wr oes aor 86 48 72 ee ros 14 ames os te S8 ae res Te S6 ae S5 48 oe 45 28 aonor oos os Med 72 8 248 328 38 48 72 8 72 98 iHKTGSUTSOS 05 Med 108 i44 388 491 38 48 72 98 Ws 142 or 33 a4 68 88 132 i78 Lacs os H ea 102 002 en oe as Ta 38 e 02 messe os to ae 4 T3 rea 55 48 ae as os 4 28 ecn amooo os Wei 72 8 248 328 38 48 72 98 72 98 iHKTGSUTSOS 05 Med 108 i144 388 491 38 48 72 98 Ws i4 or 33 44 68 88 132 175 Lacs os Wr 102 002 esr 00108 72 00 000 07 aKes 05 Lo 8 78 182 286 28 375 58 75 58 Lesson os o 72 58 25 3 8 55 48 72 95 72 98 aw Cao os Med i08 44 389 491 36 48 72 98 08 Tae iHKTGSUT0S 05 Mea 82 175 453 901 33 44 8 88 132 3 ss 386 48 72 98 i44 192 1 See conversion Table 10 May be 0 no breaker or 1 with breaker 12BN21 TABLE 12 Electrical Data For Multi Source Power Supply Copper Wire 1 208 230 1 60 Min Circuit Ampacity Max O C P Amps Type 75 C Wire Size AWG rds Heater Model Pivot Circuit Circuit Lee pss parere mires EN IICA pes uno o 4HKIGSOTSUS 4807530 zi77280 50 60 2828 8 6 10710 onai 4HKi6
13. ES position Mode Jumper The MODE jumper configures the control to operate properly with an air conditioner AC position or heat pump HP position With the jumper in the AC position the control will energize the O terminal with 24 VAC continually With the jumper in the HP position the O input signal is received from the room thermostat If the jumper is not present the control will operate as if the jumper is in the HP position SPARE Jumper The control includes a spare jumper that can be used if a jumper is lost The SPARE jumper does not have any effect on the operation of the control Status and Fault Codes The control includes an LED that displays status and fault codes These codes are shown in Table 3 The control will display the fault codes until power is removed from the control or the fault condition is no longer present TABLE 3 Fault Codes Flash Code No power to control FF Normal operation 2s ON 2s OFF Control in test mode Rapid Flash Control failure Limit Faults Limit switch currently open not in lockout Multiple limit openings with no call for heat Multiple limit openings during one call for heat Single long duration limit opening Multiple long duration limit openings Fan failure Wiring Related Faults Simultaneous call for heating and cooling Internal Control Faults Control recovered from internal event Fault or Status Condition Unitary Products Group External Relay Outputs The con
14. MoBi0 H Mei f i303 1434 MC36B H MC42C H 16C MC48C H MC48D H 14D MC60D H o SaS S ho EHE MEE pa S e s ri 38 1099 1099 D 8 N N N N A 1619 1355 1239 1747 1363 1185 1448 1225 1112 1463 1207 1126 1455 1225 s fe CAES SESE DENE KE PERE E 3 388 208 Volt 60 Hz CFM External Static Pressure IWC 37 N 85 57 a 1435 1233 1125 1511 1197 1059 1325 1115 1337 1101 1336 1117 A LA 08 s 4 3 apa aa NE NEUE soe MK NK rs EESE 817 gt 1257 1028 1213 1005 1275 1031 Co Co N o Y P 8 Y 1115 40 1154 eee AU ME MM EN DE JE NM F A A ESR EN s e 7 Wi NUWECNEE GNE GM MES E MEE X a EA EI MEME app KW EE RE RUNE NEM rier es s W SEXE X W NK NW ZR AE FE GE EISE EE ON T ms m eS resis DE ELAES E AEE EA NE 1204 1161 1104 1060 1001 870 745 554 532 Low 1204 161 1104 1060 1000 mans MC48D H 1953 1956 1905 1858 1755 1649 1528 1440 1355 1245 aw m m see is 10 ao tne ee S oer 20D MC60D H 1987 1945 1926 1887 1836 1761 1643 MOS1DH 1959 1945 1913 1862 1766 1661 1513 1420 1088 Includes return air filter coil and 10kW electric heater All MA series air handler units are UL Listed up to 0 50 w c external static pressure including air filter wet coil and largest KW size he
15. N Il SAFETY This is a safety alert symbol When you see this symbol on A labels or in manuals be alert to the potential for personal injury Understand and pay particular attention to the signal words DANGER WARNING or CAUTION DANGER indicates an imminently hazardous situation which if not avoided will result in death or serious injury WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury It is also used to alert against unsafe practices and hazards involving only property dam Improper installation may create a condition where the operation of the product could cause personal injury or property damage Improper installation adjustment alteration service or mainte nance can cause injury or property damage Refer to this manual for assistance or for additional information consult a qualified con tractor installer or service agency A CAUTION This product must be installed in strict compliance with the installa tion instructions and any applicable local state and national codes including but not limited to building electrical and mechanical codes 262675 UIM A 0806 262675 UIM A 0806 FIRE OR ELECTRICAL HAZARD Failure to follow the safety warnings exactly could result in serious inju
16. SUTBDS 4237488 3971488 48 80 40780 8 8 8 8 4HKTG502006 4607530 4837500 80760 48780 8 6 8 8 4HKiG50T506 4787580 2177250 90 60 2828 8 6 0730 6cN2 AMKISO18OS 4427508 3977458 80 80 40780 8 6 8 8 4HKiG502006 4787550 4837500 80760 4880 8 6 8 8 4HKiG50T506 4837565 2177250 50 60 2828 8 6 10 10 ono 48Kf 80iB0s 4577823 3977458 S080 40 80 8 6 8 8 4HKTG502006 4837565 4837500 S060 asso 8 6 8 8 1 O C P Over Current Protection device must be HACR type Circuit Breaker or Time Delay fuse 10 Unitary Products Group 262675 UIM A 0806 TABLE 13 Electrical Data For Single Source Power Supply Copper Wire 1 208 230 1 60 Models Heat Kit Single eater 4HKG500806 104 1808 1488 e 15 d 4 wo APO 255 542 58 8 a 8 0 4HKG500806 313 3560 4100 34 4 8 8 4HKes00506 200 35 8 2938 30 30 39 39 akeo 313 37 99 45 4 4 8 9 ECGISOMMNC NL NEM ee RUNE iHKT sNiSUS 600 5918 7938 70 4HK 6501006 53 00 akeo 600 6768 7800 70 w 4HKiesoi806 783 8207 9469 30 4HK16502006 103 00 4HK 6501006 55 00 4HKi6500500 600 6950 8000 70 w 4HKi6500800
17. ables 8 amp 9 for cooling only or Tables 12 amp 13 for single phase or Tables 15 amp 16 for three phase or Table 18 for 460V 262675 UIM A 0806 TYPICAL WIRING WITHOUT ELECTRIC HEAT GND HI LUG GND LUG SUPPLY 1 PHASE ELECTRIC HEAT WITH CIRCUIT BREAKER amp BREAKER BAR REMOVED MULTI SOURCE 15 25 KW 25 KW SHOWN LUG GND LUG T o VOIE poe nd er s D SUPPLY 14 SI POWER SUPPLY 2 POWER SUPPLY 3 MAY BE 1 2 OR 3 CIRCUIT BREAKERS FIGURE 6 Line Power Connections ELECTRIC HEAT WITHOUT CIRCUIT BREAKER 3 PHASE 10 15 KW GND Ed LUG gt TERMINAL BLOCK GND LUG POWER SUPPLY ELECTRIC HEAT WITHOUT CIRCUIT BREAKER SINGLE SOURCE 2 5 10 KW GND LUG B DS E POWER Es SUPPLY L TERMINAL BLOCK CONNECT LEADS WITH WIRE NUTS TYPICAL ALL HEAT KITS 1 PHASE ELECTRIC HEAT WITH CIRCUIT BREAKER AS SHIPPED FROM FACTORY SINGLE SOURCE 2 5 25 KW 25 KW SHOWN GND LUG HI tus ZH SUPPLY JUMPER BAR POWER E MAY BE 1 2 OR 3 CIRCUIT BREAKERS POWER WIRING 208 230 1 60 NOTE USE ONLY COPPER CONDUCTORS 3 PHASE ELECTRIC HEAT WITH CIRCUIT BREAKER MULTI SOURCE 25 KW ELECTRIC HEAT WITHOUT CIRCUIT BREAKER 3 PHASE 10 15 KW GND LUG LUG SUPPLY 1 SUPPLY 2 S S TERMINAL 2 3 PHASE BLOCK BREAKERS CONNECT TRANSFORMER LEADS WITH WIRE NUTS TYPICAL ALL HEAT KITS FIGURE 7 460V Line
18. alling the kit mark the air handler nameplate to designate the heater kit that was installed If no heater is installed mark the name plate appropriately to indicate that no heat kit is installed The HEAT ENABLE jumper See Figure 5 must be moved to the HEAT position to enable operation of the heater Use only 4HK heater kits as listed on Air Handler name plate and in these Instructions Use data from Tables 11 through 18 for information on required minimum motor speed tap to be used for heating operation maximum over current protection device required and minimum electri cal supply wiring size required for listed combination of Air Handler and Heater Kit For Upflow Downflow and Horizontal right hand applications the kits can be installed without modification Field modification is required for Horizontal left hand airflow application only Follow instructions with heater for modification HUM OUT EAC RELAY OUTPUT RELAY OUTPUT MODE JUMPER u i Na HUM STAT JUMPER ua y gt a FIGURE 5 Control Board SECTION V LOW VOLTAGE CONTROL CONNECTIONS The 24 volt power supply is provided by an internally wired low voltage transformer which is standard on all models However if the unit is con nected to a 208 volt power supply the low voltage transformer must be rewired to the 208 volt tap See the unit wiring label Field supplied low voltage wiring can exit the unit on the top right hand corner or the right hand
19. ater Unitary Products Group 262675 UIM A 0806 MA SERIES Air Handler Control Wiring MA SERIES Air Handler Control Wiring Typical A C Cooling only Applications Typical A C with Electric Heat Applications AIR HANDLER AIR HANDLER THERMOSTAT BOARD 1 STAGE THERMOSTAT BOARD 1 STAGE AIR CONDITIONING AIR CONDITIONING FIGURE 10 Cooling Models with Electric Heat Wiring 1 Y Terminal on Air Handler Control Board must be connected for full CFM and applications requiring 60 second blower off delay for SEER enhancement 2 Optional humidity switch contacts open on humidity rise 3 Remove HUM STAT Jumper on AH Control Board 4 MODE Jumper on AH control board should be set to A C for air conditioners and HP for heat pumps 5 To change quantity of heat during HP defrost cycle Reverse connections at W1 amp W2 on Air Handler Control Board CONTROL WIRING MA Series Air Handler amp New UPG HP Systems Two Stage H P with York Guard VI Board amp Copeland Ultra Tech Conventional Application Not Hot Heat Pump AIR HANDLER 2 STAGE SCROLL THERMOSTAT BOARD HEAT PUMP FIGURE 11 Two Stage Cooling Wiring 1 Y Terminal on Air Handler Control Board must be connected for full CFM and applications requiring 60 second blower off delay for SEER enhancement 2 Optional humidity switch contacts open on humidity rise 3 Remove HUM STAT Jumper on AH Control Board 4 MODE Jumper on AH control board should be set to A
20. bricated and installed in accordance with local and or national codes This includes the standards of the National Fire Protection Association for Installation of Air Conditioning and Ventilat ing Systems NFPA No 90B AIR FILTERS Air filters and filter racks must be field supplied A CAUTION Equipment should never be operated without filters SUSPENSION KITS A suspension kit is available Models 1BH0601 unit size 018 060 is designed specifically for the units contained in this instruction upflow application only For installation of these accessory kits see the instructions packed with the kit Unitary Products Group HORIZONTAL SUSPENSION For suspension of these units in horizontal applications it is recom mended to use angle steel support brackets with threaded rods sup porting the units from the bottom at the locations shown in Figure 4 SUSPENSION SUPPORT LOCATIONS FOR HORIZONTAL APPLICATIONS MIN 3 8 THREADED ROD MIN 1 1 2 x 1 1 2 Angle Recommended length 26 minimum with 2 clearance on both sides of Air Handler Units Dimension Nominal Tons YY EA 12 5 Ton NEA FIGURE 4 Typical Horizontal Installation HEAT ENABLE JUMPER LOW FAN RELAY OUTPUT 262675 UIM A 0806 SECTION IV ELECTRIC HEATER INSTALLATION If the air handler requires electric heat install the electric heat kit according to the installation instructions included with the kit After inst
21. connections The vast majority of problems encountered with combination heating and cooling systems can be linked to improperly designed or installed duct systems It is therefore highly important to the success of an instal lation that the duct system be properly designed and installed Use flexible duct collars to minimize the transmission of vibration noise into the conditioned space If electric heat is used non flammable material must be used Where return air duct is short or where sound may be a problem sound absorbing glass fiber should be used inside the duct Insulation of duct work is a must where it runs through an unheated space during the heating season or through an uncooled space during the cooling season The use of a vapor barrier is recommended to prevent absorp tion of moisture from the surrounding air into the insulation 20D 24 1 2 xi 21 19 32 TOP OUTLET DIMENSIONS CIRCUIT BREAKER PANEL BOTTOM INLET DIMENSIONS Knockouts ome ee 14 19 32 14 19 32 16 1 2 7 8 1 2 1 3 8 1 1 23 32 1 1 4 7 8 1 2 18 3 32 The supply air duct should be properly sized by use of a transition to match unit opening All ducts should be suspended using flexible hang ers and never fastened directly to the structure This unit is not designed for non ducted freeblow applications Size outlet plenum or transition to discharge opening sizes shown in Figure 3 Duct work should be fa
22. either configuration the control will energize three heating ele ments HT1 HT2 4 HT3 when it receives a first and second stage heat input from the thermostat Limit Switch and Lockout Operation Limit Switch Operation If the HEAT ENABLE jumper is in the HEAT position and the limit switch opens fault code 1 the control will immediately de energize all electric heat relay outputs and energize the blower if it wasn t already ener gized When the limit switch closes the control will re energize electric heat according to the thermostat inputs using normal timings Fan On Lock Condition If the limit switch opens multiple times during a single call for electric heat fault code 3 or if the limit switch opens for a long duration fault code 4 the control will energize the blower until power is removed from the control The control will cycle the heat outputs on and off as the limit re closes and opens The constant fan operation will signal the home owner that a problem has occurred and a service call is required Soft Lockout If the limit switch opens for a second long duration period during a sin gle call for heat fault code 5 the control will keep the blower locked on and lock out the heat outputs for one hour The control will only reset this one hour lockout when the power is removed from the control After the one hour period has passed the control will re energize electric heat according to the thermostat inputs using no
23. f installa tion to insure proper system operation 1 Consult system wiring diagram to determine proper thermostat wiring for your system 2 f heat kit is installed change HEAT ENABLE jumper from NO HEAT to HEAT position 3 Ifa humidstat is installed change HUM STAT jumper from NO to YES 4 Set the MODE jumper to A C Air Conditioner or HP Heat Pump position depending on the outdoor unit included with the system FUNCTIONALITY AND OPERATION Jumper Positions Heat Enable Jumper The HEAT ENABLE jumper configures the control for heat kit operation The jumper must be in the HEAT position if a heat kit is installed with the air handler With the jumper in the NO HEAT position the control will not energize the heat relay outputs or sense the limit switch input If the jumper is not present the control will operate as if the jumper is in the HEAT position If the jumper is not present and a heat kit is not present the control will sense an open limit condition and the blower will run continuously Hum Stat Jumper The HUM STAT jumper configures the control to monitor the humidity switch input With the jumper in the NO position the control will ener gize the HUM terminal with 24 VAC continually With the jumper in the YES position the control will monitor the HUM input to control the HUM OUT output to control an external humidifier If the jumper is not present the control will operate as if the jumper is in the Y
24. ion g g Blower Delays The control includes the following blower delays TABLE 5 Blower Delays Condition Following call for cooling Blower Delay 60 seconds 30 seconds 10 seconds Following call for heat pump heating Following call for electric heat heating Heat Output and Limit Connections The control is connected to the heater relays and limit switch using the 6 pin connector The relay outputs and the limit switch signal are 24 VDC The control energizes the heat relays and senses the limit switch input as shown in Table 6 when the HEAT ENABLE jumper is in the HEAT position TABLE 6 Heat Relays W1 HT1 W2 HT1 and HT2 W1 and W2 HT1 and HT2 and HT3 The control energizes the first stage of electric heat immediately the second stage 10 seconds after the call for second stage heat and the third stage 20 seconds after the call for third stage heat Unitary Products Group 262675 UIM A 0806 Depending on the heat kit installed in the air handler the control pro vides the flexibility to configure the amount of heat delivered with the first stage heating call As an example when the control s W1 input is connected to the room thermostat s first stage heat signal a call for first stage heat will energize one heating element HT1 If the control s W2 input is connected to the room thermostat s first stage heat signal a call for first stage heat will energize two heating elements HT1 amp HT2 With
25. n INSPECTION As soon as a unit is received it should be inspected for possible dam age during transit If damage is evident the extent of the damage should be noted on the carrier s freight bill A separate request for inspection by the carrier s agent should be made in writing Also before installation the unit should be checked for screws or bolts which may have loosened in transit There are no shipping or spacer brackets which need to be removed Also check to be sure all accessories such as heater kits suspension kits and coils are available Installation of these accessories or field conversion of the unit should be accomplished before setting the unit in place or connecting any wiring electric heat ducts or piping LIMITATIONS These units must be wired and installed in accordance with all national and local safety codes Voltage limits are as follows Normal Operating Voltage Range 208 230 1 60 21 187 253 460 60 32 504 1 Rated in accordance with ARI Standard 110 utilization range A Air Handler Voltage Voltage code Airflow must be within the minimum and maximum limits approved for electric heat evaporator coils and outdoor units Entering Air Temperature Limits Wet Bulb Temp F Dry Bulb Temp a P E SECTION lll UNIT INSTALLATION CLEARANCES Clearances must be taken into consideration and provided for as fol lows 1 Refrigerant piping and connections minimum 12 recommended
26. on blower casing over duct connection and secure such that the supply air end of the blower is down 2 Apply neoprene gasket to return air side of air handler 3 Place coil casing over blower return opening NOTE Tie plate and screws are provided with coils 4 Attach tie plate to casings of air handler and coil using screws 5 Remove blower access panel and coil filter door 6 Fasten duct flanges of coil to base of air handler with screws See Figure 2 7 Secure base of air handler to base of coil using screws 8 Complete electrical and blower speed connections as outlined in other sections of this document 9 Reposition and replace blower access panel A CAUTION Blowers with an electric heater kit may require a non combustible floor base if installing on a combustible floor See instructions for 1FB1817 1FB1821 amp 1FB1824 and local codes 262675 UIM A 0806 FIGURE 3 Dimensions amp Duct Connection Dimensions TABLE 1 Dimensions MA MODELS 08B 12B 14D 24 1 2 23 1 2 21 19 32 16C 1 Actual size Conduit size DUCT CONNECTORS AWARNING Use 1 2 screws to connect ductwork to bottom of unit Longer screws will pierce the drain pan and cause leakage If pilot holes are drilled drill only though field duct and unit bottom flange Air supply and return may be handled in one of several ways best suited to the installation See Figure 3 for dimensions for duct inlet and outlet
27. rmal timings The blower will remain locked on from the first long duration limit opening Hard Lockout The control has a hard lockout condition during which the control will keep all heat outputs de energized until power is removed from the con trol The control de energizes the blower five minutes after entering the hard lockout condition If the limit switch closes and re opens during the one hour soft lockout period the control will enter a hard lockout condition and continue to indicate a fault code 5 If the limit switch opens twice when no call for electric heat is present fault code 2 the control will enter a hard lockout condition If the limit switch opens multiple times soon after a soft lockout reset fault code 6 the control will enter a hard lockout condition Wiring Related Faults If the control receives a simultaneous call for heating and cooling fault code 7 the control will perform both heating and cooling operations SECTION VII LINE POWER CONNECTIONS Power may be brought into the unit through the supply air end of the unit top when unit is vertical or the left side panel Use the hole appro priate to the unit s orientation in each installation to bring conduit from the disconnect The power lead conduit should be terminated at the electrical control box To minimize air leakage seal the wiring entry point at the outside of the unit See Figure 3 Refer to Tables to determine proper wire sizing T
28. ry death or property damage A fire or electrical hazard may result causing property damage per sonal injury or loss of life 1 Install this air handler only in a location and position as specified in SECTION III of these instructions 2 Always install the air handler to operate within the air handler s intended maximum outlet air temperature Only connect the air handler to a duct system which has an external static pressure within the allowable range as specified on the air handler rating plate 3 When an air handler is installed so that supply ducts carry air cir culated by the air handler to areas outside the space containing the air handler the return air shall also be handled by duct s sealed to the air handler casing and terminating outside the space containing the air handler 4 The air handler is not to be used for temporary heating of buildings or structures under construction 5 The size of the unit should be based on an acceptable heat loss or gain calculation for the structure ACCA Manual J or other approved methods may be used SAFETY REQUIREMENTS 1 This air handler should be installed in accordance with all national and local building safety codes and requirements local plumbing or wastewater codes and other applicable codes 2 Refer to the unit rating plate for the air handler model number and then see the dimensions page of this instruction for supply air ple num dimensions in Figure 3 The plen
29. s is normal 24 VAC will be present at this H terminal when the HUM STAT jumper is in the NO position This is normal This terminal is a connection X C Humidity switch input E Reversing valve operation L Connection point Tof point only and does not affect heat pump fault indicator air handler control operation M U 24 VRC common The low voltage connections may be connected to the screw terminals or the quick connect terminals The screw terminals and the quick con nect terminals are physically connected on the control board HUMIDITY SWITCH INPUT The air handler control is designed to work with a humidity control that closes when the humidity is below the set point The control is open when the humidity is above the set point This humidity control may be referred to as a humidistat or a dehumidistat The humidity switch controls both humidification and de humidification operation of the control The control provides humidification using the HUM OUT relay output and de humidification by lowering the blower speed This is accomplished using the LOW FAN output and a field installed two speed fan relay kit for non variable speed models and the de humidification input of the motor for variable speed models The humidity switch should be connected to the R and HUM terminals of the control See Figures 10 amp 11 SECTION VI REQUIRED CONTROL SET UP IMPORTANT The following steps must be taken at the time o
30. trol includes three outputs to drive external relays having 24 VAC coils The outputs have a maximum rating of 1 0 Amp pilot duty at 24 VAC HUM OUT The HUM OUT output can be used to drive an external relay or solenoid 24 VAC coil to control a humidifier The output is energized when the HUM input is energized the HUM STAT is in the YES position and the control has a thermostat call for heating heat pump or electric heat EAC The EAC output can be used to drive an external relay 24 VAC coil to control an electronic air cleaner The output is energized whenever the blower relay on the control is energized Models having a high effi ciency non variable speed motor use the EAC output as an input to the motor The EAC output can also be used to drive an electronic air cleaner relay as long as the load of the EAC relay does not exceed 1 0 Amp An additional connection to the EAC terminals must be made using a piggyback terminal or similar device LOW FAN The LOW FAN output can be used to drive an external relay 24 VAC coil that switches the power input to the motor to a lower speed tap An accessory kit is available for this application The LOW FAN output is energized when the control has the following inputs TABLE 4 Low Fan Control Inputs Operational Mode Continuous Fan operation Y1 or Y1 and O First stage compressor operation Pte and meee energized WIth 1 psnumidificationduring coolin HUM STAT jumper in YES posit
31. um must be installed accord ing to the instructions 3 Provide clearances from combustible materials as listed under Clearances to Combustibles 4 Provide clearances for servicing ensuring that service access is allowed for electric heaters and blower 5 Failure to carefully read and follow all instructions in this manual can result in air handler malfunction death personal injury and or property damage 6 Check the rating plate and power supply to be sure that the electri cal characteristics match 7 Air handler shall be installed so the electrical components are pro tected from water 8 Installing and servicing heating cooling equipment can be hazard ous due to the electrical components Only trained and qualified personnel should install repair or service heating cooling equip ment Untrained service personnel can perform basic maintenance functions such as cleaning and replacing the air filters When working on heating cooling equipment observe precautions in the manuals and on the labels attached to the unit and other safety precautions that may apply 9 These instructions cover minimum requirements and conform to existing national standards and safety codes In some instances these instructions exceed certain local codes and ordinances especially those who have not kept up with changing residential and non HUD modular home construction practices These instructions are required as a minimum for a safe installatio
32. x 10 Motor Nominal RPM 1075 1075 1075 1075 valiage 2087230 2087230 Ams E Type DISPOSABLE OR PERMANENT p Filter 20 x 20 x 1 20 x 20 x 1 22x 20x 1 22x 20x 1 Permanent Type Kit 1PF0602BK 1PF0602BK 1PFO603BK 1PFO603BK Filter Rack 1FRO621 1FR0621 1FR0624 1FR0624 Shipping Operating Weight Ibs 139 133 139 133 162 156 162 156 1 Field Supplied Motor TABLE 8 Electrical Data Cooling Only 60 Hz 208 230 Total Motor Amps Minimum Circuit Ampacity Models Max O C P 1 Minimum Wire MA Amps Type Size A W G 208V 230V 208V 230V OBBNZ i 128N2 i TaN TGON2 2 48 74 88 88 38 3 1 OCP Over Current Protection device must be HACR type Circuit Breaker or Time Delay fuse TABLE 9 Electrical Data Cooling Only 60 Hz 460 Models Total Motor Amps Minimum Circuit Ampacity Max O C P Minimum Wire T2BNAT TOCNA 2000 1 OCP Over Current Protection device must be HACR type Circuit Breaker or Time Delay fuse TABLE 10 Conversion Table KW 8 MBH Conversions for Total Power Input Requirement 208V FOR 230V OPERATION MULTIPLY 240V TABULATED KW amp MBH BY Unitary Products Group 9 262675 UIM A 0806 TABLE 11 Electrical Data 1 208 230 1 60 Total Total Heat KW Staging Models Heat Kit Single MA Phase ae KW ae W1 Only W2 Only W1 W2 ita 088N21 ane s 2 E E2828 3L 28 RELRR RR CHR ieee beet erator O E E EEE IR iHK 6500808 08 Med 56 75 1
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