Home

Carrier 48AJ Air Conditioner User Manual

1. o Go Pasai ea 2 230 207 253 25 6 25 6 190 027 460 414 508 13 5 13 5 575 518 632 10 2 10 2 See Legend and Notes on page 28 o a 1 gt N N o o 68 1 80 149 80 7 90 33 76 9 90 ea 89 5 110 84 4 110 97 0 110 52 1 60 61 7 70 59 6 70 69 2 80 65 8 80 75 4 90 E E ak a o a oa a a a a a a a a oa a oa a 7 0 N N o 11 0 23 23 10 2 5 6 5 6 13 5 10 2 5 6 5 6 13 5 10 2 17 0 2 2 0 PI Ht Ht IH Ht Ht IH EH M A o w w a o 25 Table 8B Electrical Data 48AJ AK AW AY Units UNIT ko er COMPRESSOR 2 FAN MOTOR UNIT VOLTAGE RANGE Cir A Ne Cir A No 2 Cir B No 1 Cir B No 2 FAN MOTOR 48A 3 PH 60 Hz ofan nov na s 6 5 Bu 230 207 253 184 21 8 184 21 8 2 66 030 3 3 pL DERE 2 6 LL E 208 187 229 21 8 184 190 2 5 ea 230 207 253 21 8 184 190 2 6 6 035 3 3 pL T 2 6 LLL 208 187 229 21 8 184 190 4 5 ea 230 207 253 21 8 184 190 4 65 036 3 3 pL i 2 6 ALI EEE i See Legend and Notes on page 28 with Convenience Outlet cont EVAPORATOR POWER CONVENIENCE FAN MOTOR EXHAUST OUTLET FLA FLA total z gt
2. i 17221 02 l A adits 584302 401 72798 NS mt Se 33S 6 310N 339 H3NHOO ANY E 0728861 1 7051 1081NO NIVN ONIIVH3dO ALIAVHO 69 69 a 15 2 b 16 992 0121 0121 601 00706 00706 0006 11 91410 V330 090 LSOAV AV MV f V8r pue Apne Jo 191092 01 661 OSE 861 vog 852 96 212 516 26771 SLL 98 861 895 062 96 212 09v 0 2 dH 02 992 529 992 186 017 691 ZLE 516 v9 62 806 089 692 159 Sly 691 ZLE 09v 0 2 dH 07 922 vey 061 817 65 821 82 SIG 9 22 092 266 812 09 cct 821 82 097 052 dH 0 902 7 011 GLE SPL 61 601 Ove 516 S9 91 202 9 UU LLE 071 60 601 092 097 062 dH 42 Njl 4 2443 WJI 41 2343 WJI 4 2443 WAT 4 2411 NO INW3Hd HOTH WNIWAYd H9IH r L 3108 339 97 81 S N40 830 140 Z SIHO9I3M YOLOW AVA S1H9I3M YOLOW AD S62 159 1102 QNOD NIJ fl2 626 SZL ISMWHX4 uiMOd GOW 906 519 ISAVHX4 YIMOd GOW NON INJINHOVLIV JONVI4 702 0 91 V
3. l 141 7 175 p 230 207 184 25 6 190 M 025 Me e NI oojoo 50 9 60 64 1 70 58 2 70 70 8 80 67 0 80 79 6 100 43 1 50 52 8 60 48 5 50 58 1 60 56 0 70 65 6 80 116 1 125 139 7 150 131 5 150 155 1 175 150 8 175 174 4 200 114 8 125 138 4 150 128 2 150 151 8 175 145 7 175 169 3 200 59 1 70 71 7 80 65 6 70 78 2 90 74 4 90 87 0 100 46 6 50 52 7 60 50 9 60 57 0 60 58 4 70 64 5 80 135 3 150 158 9 175 154 6 200 178 2 200 171 1 225 194 7 250 132 0 150 155 6 175 149 5 175 173 1 200 164 5 200 188 1 225 A m BE 7 6 w ea 14 0 N EE eris WN o o OG oleo oo oo oojoo oo looloojloo ooj oojleonv oo oo oo oo oooo oo loo loo oo oojleon oo ooo oo o0 oo oo oo ea 17 0 o 16 7 a m c ea 0 8 113 46 2 N IN o o 5 28 0 eo LO N N o GO 42 0 Nx N 6 14 0 1 0 11 0 of gt 2 wmm 17 0 165 3 200 575 518 632 RB 10 2 208 187 229 25 6 um 0 8 a 25 6 190 46 2 20 9 4 o o a N N N je 9 o
4. 2 Pivot each damper assembly outward until edges of damper assembly rest against inside wall of unit 3 Secure each damper assembly to unit with 6 screws across top 3 screws provided and bottom 3 screws from Step 1 of damper 4 With screws saved from Step 1 install brackets on each side of damper assembly 5 Remove tape from damper blades ECONOMIZER OO LOCATION BAROMETRIC RELIEF OR POWER EXHAUST SIDE 2 ALTERNATE 42 56 12 94 l UNIT 1 J BOX PLENUM RATED CABLE FIELD SUPPLIED LOCATION END R A NOTE 020 050 SIZES SHOWN 2 POWER EXHAUST FANS SIZES 051 AND 060 HAVE 3 POWER EXHAUST FANS ALL UNIT SIZES HAVE THE SAME SIZE POWER EXHAUST Fig 31 Power Exhaust Relocated to Side Return Duct 42 58 12 00 12 00 9 31 0 90 0 19 DIA p 2 19 1025 23 24 10 25 A 7 k 0 312 0 500 i 38 10 19 12 00 12 00 10 19 NOTES 1 Unless otherwise specified all dimensions are to outside of part 2 Dimensions are in inches 3 On 48AW AY units accessory barometric relief or power exhaust must be mounted in the field supplied return ductwork Fig 32 Barometric Relief Damper and Power Exhaust Mounting Details Step 11 Route VAV Static Pressure Sensors VAV DUCT PRESSURE TRANSDUCER The VAV duct pressure transducer
5. dlavilvAv SI S NIN3dO LONG AHL Kouenbej4 GA E NORTE V3HV 3HILN3 SONIN3dO AlddNS 33HHl uun oA AVA 1 3108 335 5318055322 01140 TW NYNLAY 33tH1 ONIHJAOO HOdH AJANIN JOJOW ue4 J00pu WI 2 WOO3H SI NOLLO3NNOO YHOMLONG AlddNS ANY Nun d 3H 319NIS V SNOlIVOllddv NH lduH Aldd s 3GdlS HOS 6 uondo pejeisu A10 2 4 dol4 0v 9191 1V3H HDIH AV MV8t SIHONI NI SNOIS euJn OA JuUeISUOD AO NAWIC 11 StH313IITIIN NI 38V NI SNOISN3WIG 8 6958 9271 1V3H AV MV87 ONIHIM Q3 1VIDOSSV ANY H3On dsNvu L QN3911 GSA G4A HOLOW HOOQNI SGNTONI SLHOI3M HOLOW AYA 4 MV f V8t LHOIAM ONILIVH3dO woe vez vum sez ea L3H 090AV MVB WLOL S3IHOSS32OV ANY SdOld HOLOW NVd HOO G 1V3H HOIH 090 Y Y87 USEE 881 1V3H NI GGV LON SI HOLOW HOOQNI SGOOH HIV HOOGLNO ACNTIONI S1HOIH3M LINN ASVa 9 goe euz Leer zzz vell ozee 01 OL 01 1V3H 090 8 090 AHOSS3OOV INOA SV 530 8 SSOHO 1V3H 0903 8 31 0 SLONA AHL 1 QH3ON3WINOO3H SI LI 8006 181 1V3H AV MN8t ZOVNNNG NO GALNNOW SI LINN JI AHN AHOSS3O v 0 9 v2 1202 6 v2 1621 296 8 6 0 Y MAS 1 1V3H
6. 1 3018 dAl NO 123S 55082 BUNI 3008 03114405 01313 NOILVINSNI 41918 43114405 01313 41815 43114405 01313 1131 9813008 43114405 01313 ONIHSV1J Y3LNNOD 9812 HLIM 031 19915 06 13NSv9 53015 2 dAl 91 6 1911 NOI123S 55082 TIVE 15 8 iar 7 i 1911 4 061 Vid 8 1 N M 16 1 911 9 113171 7V1NOZINOH Ol LINN 10 3943 case 39NYH3101 9 13 37 LINN po ei st os Jee er 1211 NI 7930 NI 930 8 1 3155 9 7 119130 S3HONI ONY 5338930 m SNOISN3HIQ 8 Y T 02 qui rn 80552424402 97806 33513002 69 0180 4 uml 43530 07 691 NMOHS Sv O3HOlld 38 AINO NVO LINNA T 839NVH2X3 1V3H JHL NV NOII23S 800081 N FHL 30 NIVYQ JHL NI YJLVM ONIQNVIS MAS OY 114405 019 2 r vl 76011 91 1 38 019 S3HONI NI SNOIS NAWIG TY SH313NWITIIA NI NI SNOISN3WIG 714415 Q3ZINVATVO VD 38 OL S1Hvd Y ad 18WNassv 4 181 91 L SIG Q3ddlHS SI 00vso0gHriDdHHO AHOSSHOOV g8Hfl0 JOOH 1 dO ACISLNO OL 3HV SNOISN3WIG GaldlOd3dS 3SIMH3HIO SSSINN L S31ON G 0 020sV r
7. LSONV V8 ET OL Q3HOVLIV 38 OL GANDISAC SLONG PES S 1HVd3Q ONIH33NION3 NOLWOMddV H3lHHVO LOVLNOO 692 Loz Lez Sell esee 8 6 0L MIL Su IVIHMO OY SY 986 7901 1V3H 8 S3ONVHV31O TVNOLIVH3dO 3OIAH3S H3TIVWS 1V3H LSONV C V8 1109 HOIVHOdVA3 dO 7 8 Y 8 1126 veel 1V3H 8 WAOWAY zzSv 0 SI ACIS 553200 HALA ANYOD H2V3 IV Sui 3WI Tin NI 14 371 LINA 160 fezei AE SEE I1H9I3M 1 101 40 ALIAVH9 10 8 32 92 0 H3SN3QNOO L 3108 335 SIH9T3M LINN 3SV8 S3ONVHV31IO LINN ALIAVHD JO H31N304g H3dWva uiv HOOGLNO HO H3ZINONOO3 3Q TIONI S LHOIHM L SILON 12 UNIT 48AJ AK AW NOMINAL CAPACITY tons BASE UNIT OPERATING WEIGHT Ib COMPRESSOR Quantity Type Ckt 1 Ckt 2 Number of Refrigerant Circuits Oil oz Ckt 1 Ckt 2 REFRIGERANT TYPE Operating Charge Ib oz Circuit 1 Circuit 2 CONDENSER COIL Quantity Rows Fins in Total Face Area sq ft CONDENSER FAN Nominal Cfm Quantity Diameter in Motor Hp EVAPORATOR COIL Tube Size in Rows Fins in Total Face Area sq ft EVAPORATOR FAN Quantity Size in Type Drive Nominal Cfm Motor Hp Motor Frame Size Motor Bearing Type Maximum Allowable Rpm Motor Pulley Pitch Diameter in Nominal Motor Shaft Diameter in Fan Pulley Pitch Dia
8. O0 1 2 99 23 17 40 94 07 02 14 10 23 73 a 23 _ a 0 _ a oN 7 0 148 1 15 7 0 167 4 23 6 7 0 191 0 7 0 183 9 10 7 0 144 8 23 6 7 0 168 4 15 7 0 162 3 23 6 7 0 185 9 7 0 177 3 10 3 5 70 0 12 6 3 5 82 6 15 3 5 78 8 12 6 3 5 91 4 3 5 86 3 2 5 57 5 2 5 65 0 2 5 71 2 15 7 0 176 4 23 6 7 0 200 0 7 0 192 9 7 0 212 1 7 0 171 3 7 0 186 3 7 0 203 8 3 5 87 9 18 3 5 95 4 3 5 104 1 2 5 68 6 2 5 74 8 2 5 81 1 15 7 0 189 4 23 6 7 0 213 0 7 0 205 9 7 0 225 1 15 7 0 184 5 23 6 7 0 208 1 7 0 7 0 3 6 7 0 3 5 12 3 5 3 5 124 3 5 3 5 12 3 5 5 5 5 E 2 8 2 80 0 2 5 86 3 POWER SUPPLY Fuse or HACR Brkr 175 200 200 225 225 250 150 175 200 225 225 250 80 90 90 110 110 125 60 70 80 90 90 100 200 225 250 250 250 300 200 225 225 250 250 250 100 110 110 125 125 150 80 90 90 100 100 110 225 250 250 250 250 300 225 250 250 250 250 300 110 125 125 125 125 150 90 100 100 110 110 110 Table 8B Electrical Data 48AJ AK AW AY Units with Convenience Outlet cont COMPRESSOR Cir A No 2 No 2 EE E UNIT CONDENSER EVAPORATOR POWER VOLTAGE RANG FAN MOTOR FAN MOTOR EXHAUST SIZE PH 60 Hz RLA RLA LRA RLA RLA LRA Qty FLA FLA FLA total 208 2
9. Sizes 020 040 Circuit 1 uses the lower portion of condenser coil Circuit 2 uses the upper portion Sizes 041 060 Circuit 1 uses the left condenser coil Circuit 2 the right All units have intertwined evaporator coils TRollout switch is manual reset 14 UNIT 48AJ AK AW NOMINAL CAPACITY tons BASE UNIT OPERATING WEIGHT Ib COMPRESSOR Quantity Type Ckt 1 Ckt 2 Number of Refrigerant Circuits Oil oz Ckt 1 Ckt 2 REFRIGERANT TYPE Operating Charge Ib oz Circuit 1 Circuit 2 CONDENSER COIL Quantity Rows Fins in Total Face Area sq ft CONDENSER FAN Nominal Cfm Quantity Diameter in Motor Hp EVAPORATOR COIL Tube Size in Rows Fins in Total Face Area sq ft EVAPORATOR FAN Quantity Size in Type Drive Nominal Cfm Motor Hp Motor Frame Size Motor Bearing Type Maximum Allowable Rpm Motor Pulley Pitch Diameter in Nominal Motor Shaft Diameter in Fan Pulley Pitch Diameter in Nominal Fan Shaft Diameter in Belt Quantity Belt Type Belt Length in Pulley Center Line Distance in Factory Speed Setting rpm FURNACE SECTION Supply Line Pressure Range Rollout Switch Cutout Temp F t Burner Orifice Diameter in drill size Natural Gas Std Liquid Propane Alt Thermostat Heat Anticipator Setting Stage 1 amps Stage 2 amps Gas Input Btuh Stage 1 Low Heat High Heat Stage 2 Low Heat High Heat Efficiency Steady State Temperatu
10. A CAUTION Follow all safety codes Wear safety glasses and work gloves Use quenching cloth for unbrazing operations Have 1 All panels must be in place when rigging or damage fire extinguishers available for all brazing operations to unit may occur ANWARNING 2 Unit is not designed for handling by fork truck Before performing service or maintenance operations on unit turn off main power switch to unit Electrical shock could cause personal injury Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53480067 01 Printed in U S A Form 48 7 1 Pg 1 8 09 Replaces 48 5 1 ROOF CURB For vertical discharge units assemble or in stall accessory roof curb in accordance with instructions shipped with this accessory See Fig 1 3 Install insulation cant strips roofing and counter flashing as shown Ductwork can be installed to roof curb before unit is set in place Curb should be level This is necessary to permit unit drain to func tion properly Unit leveling tolerance is shown in Fig 1 3 Refer to Accessory Roof Curb Installation Instructions for additional information as required When accessory roof curb is used unit may be installed on class A B or C roof covering material IMPORTANT The gasketing of the unit to the roof curb is critical for a watertight seal Install gasket with the roof curb as s
11. ER E a ao 020 574 003 9 S3HONI NI SHV SNOISN3WIG H3H1O Y TH T3N 3Z1S LINNA xs 4 Tiv SH313NITIIN NI 38v NI 9 AH bA 1H913M 434405 1 8340 ES iyi 2085300 NO SV S3ovHa 55050 Ag veoe evi vrg 116 II E 7656 SEOL N 3 2 qaidoddns SLONA 961 611 618 666 8 1 0l vtvG CEOS WO V VBP 30I NI 2 LI S SI 35vNNnd NO d3IN ON SI 1151 16 8801 5011 7INE 615 060 1 N 9 0 J004 AHOSS329V OL Q3HOVL CBE TIBI Biot RR UR trae L0 C TIVI CV HE ix uy IN M esi eeri 2501 9701 0 1 8 967 120 5787073 8000 55322 26 11 8 Voldav LOVINOD S3JONVUVIIO eefi 6001 1601 8 5 8 058 SZOL N 3 80553844402 TVNOLVH3dO ONY 3OIAHJS S 961 1161 266 9001 ZEE 0117 520 5 W awv rver voei S961 8101 0601 41 LLLY 0201178 3 3V C V8Y DA HOD HOIVHOdVA3 30 ogzi orei 8501 986 2 1 9 t 1697 020 CS 0 Y 0121 0121 192 303 870 0 0 3dIS 553999 HALT r tet NEI 81 0 0 2 1 01 6121 0 p AQIS IVAH g 371 LINN 69 07 9 3qIS H3ZIWONOO3 81 SIHO IM ONT 19390 V h 9176 2 kaklo iy OO HASNAONOS ON SLINN dO dOL NYNA 8 1 801 S3ONVHV31O LI
12. For variable air volume units that will use heat the variable air volume terminals should be interlocked with the unit at TB5 terminals 1 and 2 Demand Ventilation The unit can be equipped with a CO sensor for use in demand ventilation This can be factory supplied and will be mounted in the return duct It can also be field supplied and mounted in the return duct or in the space Connect the field installed 4 to 20 mA sensor to TB5 terminal 6 and 7 Do not remove the factory installed 182 ohm resistor If an outdoor air quality sensor is used then it should be wired to terminal 11 and 12 on TB6 This will require the use of the optional controls expansion module Remote IAQ Override If the control is being used with non Carrier building management system it supports the use of the remote IAQ override switch This should be connected to TB6 terminal 13 and 14 Use of this will require the optional controls expansion module Remote Economizer Position Control The ComfortLink controls will normally control the position of the economizer but it can also support field control of the economizer position through a 4 to 20 mA signal If this is used it should be con nected to TBS terminal 6 and 7 If the signal is a 4 to 20 mA signal then leave the 182 ohm resistor in place Remote Economizer Enable If the control is being used with other building management systems and the system will control the enabling and disabling of
13. 09011 hi 2E 1 0 Stine 26162 17 Sp 6111 uly n eor P NIUN TT 832180N023 di ME 4 aS zd NNOD 1 80 1dN S2 1 LINA HLIM Q30013N1 8000 322Y NOI123S 5 9 310H 13741 SYO 631141581 01313 0009 9011 HI 01313 TOA HOT A 0887 EAR EESIN iama ssi 815 2 1102 W3SN30NO dV ONIA 0 0 9 L 119455327 TOR 1081802 XQY dillld 11251 2661 26 51 6 8304 01313 LAN 1681 2 1 39V110A MOT LAN 61 y 8 5 21 V V 8 1 l 19881 rere 25152 16 ae 14405 414405 GINMIOA 318 JAHA A9N30041d4 38v ANY Gin 0A 318v 18v LS v HX3 SNL INGOW S7109 4010 HO0CINI 153941 S3Of DNI 9NIIVd3d0 3 1133 66111 SEO L N 3AV MV8 p GEOS N ONAY MYS y1t2 OEO LN 3AV MV8 Y 69 LEE 0 0 S W Q AV MVSF Hi 90 2 1200 N 3AV MV8 Y 799 Zz0 S W Q AV MVS9r HE BU 16211 91 ies 929 teon terg oes 109 var zcv 10901 tegai y m 93 s 371 LINA puram e SLATE SEO LN SAV MSP 9161 tez 8 1 01 6 GEOS eesi 2081 9601 18 4 OEO L N 3AV MV8 SAHONI NI SNOIS 16
14. 1 1 144 ve ne 7601 9133 A 91 1 6 1 1181 91 L 43114405 01313 NOILVINSNI 01913 9915 41313 43114405 01313 41815 LNW 43114405 01313 1131 9NI 3009 43114405 41314 ONIHSYT4 8 301 Z 41 NOI123S 55082 1 3Svg 1911 06 91 6 m S 8802 HLIM 43114405 137879 1061 A PUT vid 8 6 1 901 9811411 vel 2616 5 1211 26 12 2 WINOZIYOH OL LINN 30 3903 WOUi S 3oNVU1101 13A31 LINN er sr os et e 2 o 930 wu NI 8 Y S3HONI NV 5338930 SNOISNd3NIQ id 083 ana yossaud KOSSAN u3sN30NOD NMOHS SV 3H211d 38 AINO NVO LINN Su3ONVHOX3 lV3H 3Hl ONY NOI123S 30001 FHL 30 Nvd 1930 FHL NI u31VM ONIQNVIS IN3A3Ud OL 310N SIHONI 3HY SNOISN3IAIQ H3HLO TIY SH313NITIIN NI SNOISN3WIG SHHONVHg HO S440 AlddNS ANY OL LONG XlddNS AHL NO MOGTT3 06 V GATIVLSNI 38 LSAW 1 OIH LO3T3 SLINN 714415 Q3ZINVATVO V9 vL 38 OL S1Hvd guo dOOt TIV ad18Wa3ssvslia daddlHS SI 00vs008H 10HdHHO AHOSS3OOV 004 1Hvd 30 3GIS100 OL SNOISN3MWIQ TY 131410995 3SIMH3HIO SS3 TNR 0 S31ON SHUN 050 9 0x4 V IV8t qun jooy z 03114405 01313 NOILVINSNI 01913 43114405 01313 41815 LNW 43114405 01313 1133 9811008 4311440
15. 5VX530 2B5V86 1 9375 2 5VX530 1 oo o o o co co co co 1 B 1 B 1 B 1 B 1 B 1 B 1 B 1 B 1 B 1 2B5V86 B 1 9375 2 5VX500 9 2B5V86 U B 1 9375 2 5VX530 10 2B5V86 1 9375 2 5VX530 11 2B5V94 1 9375 2 5VX530 10 2B5V94 f B 1 9375 2 5VX550 11 2B5V110 11 B 1 9375 2 5VX590 11 2B5V94 i 1 9375 2 5VX530 10 2B5V94 1 9375 2 5VX550 11 2B5V110 11 B 1 9375 2 5VX590 11 B 1 B 1 B 1 B 1 B 1 B 1 B 1 B 1 B 1 B 1 B 1 B 1 B 1 B 1 B 1 co co cO cO 00 NNN 2B5V94 1 9375 5VX530 10 2B5V94 1 9375 5VX550 11 2B5V110 11 1 9375 2 5VX590 11 2B5V94 1 9375 2 5VX550 10 2B5V94 1 9375 2 5VX570 11 2B5V94 1 9375 2 5VX570 13 2B5V110 3B5V90 3B5V94 3B5V94 2B5V136 3B5V90 3B5V94 3B5V94 2B5V136 5 560 11 5VX530 12 5VX550 12 5VX570 14 5VX650 15 5VX530 12 5VX550 12 5VX570 14 5VX650 15 2 2 2 2 2 2 2 3 3 3 2 3 3 3 2 Moro L uoeonl2l ooo 2oo o O co co RETURN AIR SUPPLY AIR CONDENSATE DRAIN Fig 13 Air Distribution Thru the Side Step 5 Install Flue Hood 48AJ AK AW AY020 050 UNITS Flue hood is shipped inside gas section of unit To install secure flue hood
16. 88521 _ 9NILJIT 11 83 0 178021 91 iat 21 16 _ NOTLISOd 511311 186 Tova 3disw 46 178 t 901 9NILJIT NI 310H 96221 2 62 4 TIT WAG Ed HE ut 91 1 0011 61 186211 _ 2 9NIUIM 01313 28162 69 lg VIQ 91 602 101961 1188 p c L 1 67 Js39V1d dAl a 91 1 8 061 2 2 2 1091405 6 61 H 1881 1591 AYYITIXNY 5151 39V110A MOT 2079 169211 161011 15171 9115 62 VIQ ZZ 8 1 piti pce Een 91 11 8l i imi Sr te j 1 o pL 1091 YIY 114406 SLL MIB 26112 62 QL L SP n 26 61 62 i 16111 EE 310H 131NI S5 0N033 15811 1dN 1861 2 1 1 91 168011 8 S 27 ELE 3015 Jig 553924 039NIH YOOd S5322Y NNOD NIV 34019 40048 W NI E 4035384102 1081402 dvd 1109 83503 039NIH 8000 325V 011238 5 9 039NIH 3000 SS320Y 91 6 6 JOVLIOA MOT LAN 61 0 1081N02 831113 2 26 F 1 LIN HLIM 3001281 031191581 11313 5000 1 50008 YAZINONOD3 I 517 9L L 1261 78721 B S l 2612 16 ILLL 16661 xog 2 1 9 M MIA 91 14 AWMOAUIV 318VIHVA 3AIHO ANINDYA 318VIHVA ANY GWMOA HIV 318 VI VA 15 YIMOd 7081405 1 V V S1102 2 HOLONW HOOQNI 1539391 SAGNTONI LHOI3M 3 0 E EF 1 626 818 719 869 6811 eve 6506 050 1 N 0AV NV8V 118415 118405 216 718
17. 16 6101 8 6 0 0 5 AV MNVSF N3WIQ H3H O TY SH3L3NITIIN NI 3HV 6 eari Mim 180i 9 8 8 E ZZ0 UN JN3IW LHvd3d rori 0901 19 2 1206 WO AY MV8V 7 ONIH33NION3 td3ldtiVO LOVLNOO 8 5 8 oer zu S3ONVHV43 IO TIVNOLIVH3dO 39IAH3S H3TIVINS Q39NIH 100 HOIVHOdVA3 TH Her weet S 322V 30 WAOWSY 8708 0 0 AGIS SS3OOV HALTS E a ag age n ONE 05 211 01 40 9 81 LH91JM 838802 D ids 371 11 0 65 61211 0 H3SN3Q0NOO 9176 2 ON 5 dO dOL p ec V ISHONVHV31TO ALIAVHO JO H3IN30 S 16 H3ZINONOO3 SGNIONI SLHOISM L SALON 050 9 0A V MV8t suoisueuig yun eseg 8 Wig 9lddlug
18. 208 187 229 184 230 207 EH 184 030 B EEE 208 187 184 230 207 184 035 B EEE 208 187 184 230 207 184 036 i See Legend and Notes on page 24 25 6 25 6 13 5 10 2 25 6 25 6 COMPRESSOR Cir A No 2 Cir B No 1 Cir B No 2 18 184 73 190 190 95 75 190 190 rpg 11 5 6 5 6 13 5 10 2 5 6 5 6 13 5 10 2 EEE F EEE EEE Fr 3 3 ea 2 6 ea 6 5 ea 6 6 ea 3 3 ea 2 6 ea 6 5 ea 6 6 ea 3 3 ea 2 6 ea EJ 176 9 137 8 K3ETSEFONE De pro s Be ENE m Et CONDENSER EVAPORATOR POWER FAN MOTOR FAN MOTOR POWER SUPPLY in RLA RA PLA FLA Ti FLA FFA ia MCA MOCP 150 175 200 225 225 250 150 175 175 200 200 225 80 90 90 100 100 110 60 80 70 90 90 100 200 225 225 250 250 300 200 225 225 250 250 250 100 110 110 125 125 125 80 90 90 100 100 110 225 250 250 250 250 300 200 225 225 250 250 300 110 110 125 125 125 150 80 90 90 100 110 110 Table 8A Electrical Data 48AJ AK AW AY Units without Convenience Outlet cont VOLTAGE COMPRESSOR CONDENSER EVAPORATOR power SUPPLY RANGE Ci
19. 65 999 1811 7052 9862 OSO S W Q AV MYSP 7 1 99 668 eL 616 79 LULL GEEZ 69c LPOCL NDAV MVSP q 1 279 891 666 219 6911 0052 1812 Nun13U 178 261 996 559 6611 85 1082 8 1 6 L 1 058 121 175 729 1611 bre 8212 OPOS WO v NV8r Y 061 185 179 8212 SEOCI WHAV MVOP 62 x zu 29 019 80 2 5592 9E0 8 WAV MYS 2 91 61 21 68 y t H T Wh Wh by 211 6 31909 8 V HOJA 371 LINN 91173340 V 8702 081 rin BEGI W E OI 6 7 18 719 060 1 N 3JAY MV9F 5611 0161 1971 ell OL 8 7 9 869 060 A 681 0Ll 5121 9171 8 6 01 1 0629 N 3 AY MWV9F n 5581 691 eget 0 419 1 019 170 W OAVINVSE S3HONI NI SHV SNOISN3MI 1991 vIOL 6721 Stbl Vlll t FIE 6 eL 7119 OpOCL N 34V MV8V d 6281 091 9021 9161 48 1012 6 7 18 7109 070 5 n a v Mvgr Id HAHLO TIV SHSLESIATTIIN LI NI SNOISN3INIG S 1 6151 1821 8 1 OL 6 7 10 9 7109 9 0C1 N 3 AV MV8 INHIAJHVdHG aa H33NION3 NOLlVOllddv H3lHHVO lOVINOO S3ONV dsl HV3IO VNOLIVH3dO ANY 6 H3TIVWS Y H NI 13 1 13 81 Wr shes 1100 HOIVHOdVA3 JO 8 Y IH9I 3M 3ZIS LINN VAONW3t 8508 0 01 ACIS 553999 HAL 94113390 6121 0 3qIS 1v3H 6581 9 ACIS H3ZINONOO3 6121 0 7 09 H3SN3Q
20. 960 lo5 1eddoo 104 Dx 2 1 LSOSAV MV 87 TSOGAVIMWEP shun 090 pue 50 uodxe 10 992 1GOAV MVOS suun 060 960 uodxe 101 91 LS03 IV CV8t 9 05 SHUN GE0 0ZO 1100 1esuepuoo 1eddoo 10 001 q q q q q q LG0CIV T V8 sun 560 020 uodxe 104 zy ISOxV C VOS 0S03AV MV8V 0SOGQAV MV8V OSOAV MVOS OS03xv rv8v Osoqxv rvev 050 09 LvO3AV MV8V LYOQAV MY 87 LYOAV MYOS 8Y LvOQxV Cv8r LvOXV P VOS OVOGAV MV8V OVOAV MVOS OvO3XV Cv8V OvOQNV CV8r OvOxV CvOS 9 03AV MV8V 9 0GAV MV8t 9 0AV MVOS 9 0Qxv rv8v 9 604 08 560 8 SEOQAV MY 8 SEOAV MVOS SeoQxv rvar SE O V C VOS O 03AV MV8t O 0GAV MV8V O 0AV MVOS Oto3xv rv8v O 0QxV Cv8r 050 09 Zc03AV MV8V 2200 8 220 09 2203 AJlIAVHO 120QXV TV8V JO 120V C VOS H31N39 Sc03AV MN8V Sec0GAV MV8V SZOAW MWOS ScO3xV Pv8v Seoaxv rvav ScOXV CVOS g z a 5812 0c03AV MV8t e y OcOGAV MV8V 60 E 5212 OcOAV MVOS 173 Y 49 Oco3xv rvav 6 bebe OcOQMV CV8r ocv 60
21. Return Air Conversion Copyright 2009 Carrier Corporation Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53480067 01 Printed in U S A Form 48 7 1 Pg 36 8 09 Replaces 48 5 1
22. and where tem peratures drop below 32 F See the Motormaster accessory installation guide for instructions Step 13 Field Modifications DUCTWORK Bottom Return Units 48AJ and AK Field Modified for Side Return The 48AJ and AK units with bottom return air connections may be field modified to accommodate side return air connections IMPORTANT The following section is a guideline and not a comprehensive procedure to field modify the units The installing contractor must provide some design initiative Field conversion is complex and is not recommended Units with electric heat must not be converted because of potential heating mode operating problems Conversion to horizontal return requires that the bottom return openings of the unit must be sealed with airtight panels 35 capable of supporting the weight of a person The return ductwork connection locations on the side of the unit are higher than normal 31 in high Unit mounted power exhaust or barometric relief cannot be used because of return air ductwork will cover the power exhaust or barometric relief installation locations Power exhaust or barometric relief may be installed in the return air ductwork To convert the unit perform the following 1 Seal the bottom return openings of the unit with airtight panels capable of supporting the weight of a person 2 Remove the panels located below the economizer outdoor air dampers These openings will be used
23. for the return air ductwork There are 2 panels on 48AJ AK020 050 units There are 3 panels on 48AJ AK051 and 060 and units These openings are normally used for power exhaust or barometric relief 3 Run the return air ductwork up to the openings One single duct is recommended to connect to the unit over the return air openings See Fig 34 The return duct must incorporate a minimum 3 4 flange for connection to the unit cabinet The unit does not have duct flanges for this conversion Side Supply and Return Units 48AW AY with Field Installed Power Exhaust in Return Duct Space must be available in the return duct to mount the power exhaust fan gravity relief modules Dimensions and suggested locations are shown in Fig 34 These instructions are a guideline and not a comprehensive procedure The design contractor must pro vide some design initiative The wiring harness that is provided with the power exhaust accessory is not long enough for the fan modules to be mount ed in the return air duct Field supplied wiring must be spliced into the harness Use a junction box at each splice The wiring may be run in the return duct or externally in conduit A ser vice access panel will be needed near each power exhaust fan PRESSURE TRANSDUCERS INSIDE OF PANEL Fig 33 Pressure Transducer Locations AUXILIARY CONTROL BOX 97 78 020 050 150 47 051 AND 060 INSIDE DIMENSION Fig 34 Side
24. simplify installation and checkout See Table 10 Table 10 Color Code Recommendations Poet Ground 2 Negative Cj 3 Ifa cable with a different color scheme is selected a similar color code should be adopted for the entire network At each system element the shields of the communication bus cables must be tied together If the communication bus is entirely within one building the resulting continuous shield must be connected to a ground at one point only If the communication bus cable exits from one building and enters another the shields must be connected to grounds at the lightning suppres sor in each building where the cable enters or exits the building one point per building only To connect the unit to the network 1 Turn off power to the control box 2 Cutthe CCN wire and strip the ends of the red 7 white ground and black conductors If a different net work color scheme is used substitute appropriate colors 3 Remove the 3 pin male plug from the base control board in the main control box and connect the wires as follows a Insert and secure the red wire to terminal 1 of the 3 pin plug b Insert and secure the white ground wire to termi nal 2 of the 3 pin plug 31 c Insert and secure the black wire to terminal 3 of the 3 pin plug 4 Insert the plug into the existing 3 pin mating connector on the base module in the main control box VAV Units with Heat
25. the economizer free cool ing this switch input can be connected to TB6 terminals 1 and 2 Note that the controls also support integrated economizer changeover using outdoor dry bulb differential dry bulb outdoor enthalpy and differential enthalpy Remote Occupancy Switch For interface to other building management systems the control also supports a switch input for remote occupancy signals This wiring should be connected to terminal TB6 terminal 1 and 3 Remote Economizer Minimum Position Control If the ComfortLink control is controlling the economizer but a remote minimum position is required then an external 100K potentiom eter can be connected to TBS terminal 6 and 7 Remove the factory installed 182 ohm resistor Smoke Sensor Interface The ComfortLink control includes an optional factory installed return air smoke detector Remote alarm circuits can be wired to 5 terminal 8 and 9 Fire Shutdown and Smoke Control The control supports interface to fire and smoke control systems and allows for the following system overrides from remote switch inputs Fire Shutdown Connect to TB6 terminals 8 and 9 Smoke Pressurization Connect to TB6 terminal 12 and 13 This requires the use of the optional controls expansion module Smoke Evacuation Connect to TB6 terminal 12 and 14 This requires the use of the optional controls expan sion module Smoke Purge Connect to TB6 terminal 12 and 15 Thi
26. 0 100 100 110 110 125 250 250 250 300 300 300 225 250 250 250 300 300 110 125 125 125 150 150 90 100 100 110 110 125 300 300 350 350 350 400 300 300 300 350 350 350 125 150 150 175 175 175 110 125 125 125 125 150 Table 8B Electrical Data 48AJ AK AW AY Units with Convenience Outlet cont COMPRESSOR Cir A No 2 No 2 Cir B No 1 No 1 UNIT SIZE VOLTAGE 28A 3 PH 60 Hz VOLTAGE RANGE EIS E 051 060 Hun LEGEND FLA Full Load Amps HACR Heating Air Conditioning and Refrigeration LRA Locked Rotor Amps MCA Minimum Circuit Amps NEC National Electrical Code RLA Rated Load Amps Fuse or HACR circuit breaker per NEC US NOTES LISTED 1 In compliance with NEC requirements for multimotor and combination load equipment refer to NEC Articles 430 and 440 the overcurrent protective device for the unit shall be fuse or HACR breaker The Canadian units may be fuse or circuit breaker 2 Unbalanced 3 Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2 Use the following formula to determine the percent of volt age imbalance Voltage imbalance 100 x max voltage deviation from average voltage average voltage 28 CONDENSER EVAPORATOR Es FAN ESTER MOTOR EXHAUST OUTLET POWER SUPPLY D 0 257 5 300 0
27. 0 24 4 5 20 24 4 5 20 24 4 5 20 24 4 8 16 25 2 4 20 x 25 x 2 Direct Drive Single Phase Motors Factory Wired for High Speed Operation Forward Curved Fan Wheels with Backdraft Dampers on Each Fan Housing 4 1 11x10 Sizes 020 040 Circuit 1 uses the lower portion of condenser coil Circuit 2 uses the upper portion Sizes 041 060 Circuit 1 uses the left condenser coil Circuit 2 the right All units have intertwined evaporator coils TRollout switch is manual reset 13 UNIT 48AJ AK AW NOMINAL CAPACITY tons BASE UNIT OPERATING WEIGHT Ib COMPRESSOR Quantity Type Ckt 1 Ckt 2 Number of Refrigerant Circuits Oil oz Ckt 1 Ckt 2 REFRIGERANT TYPE Operating Charge Ib oz Circuit 1 Circuit 2 CONDENSER COIL Quantity Rows Fins in Total Face Area sq ft CONDENSER FAN Nominal Cfm Quantity Diameter in Motor Hp EVAPORATOR COIL Tube Size in Rows Fins in Total Face Area sq ft EVAPORATOR FAN Quantity Size in Type Drive Nominal Cfm Motor Hp Motor Frame Size Motor Bearing Type Maximum Allowable Rpm Motor Pulley Pitch Diameter in Nominal Motor Shaft Diameter in Fan Pulley Pitch Diameter in Nominal Fan Shaft Diameter in Belt Quantity Belt Type Belt Length in Pulley Center Line Distance in Factory Speed Setting rpm FURNACE SECTION Supply Line Pressure Range Rollout Switch Cutout Temp F t Burner Orifice Diameter in dr
28. 00 16 000 16 000 15 20 25 15 20 25 15 20 25 15 20 25 254T 256T 284T 254T 256T 284T 254T 256T 284T 254T 256T 284T Ball Ball Ball Ball 1300 1300 1300 1300 5 1 5 7 6 2 5 3 5 7 7 5 5 3 5 7 7 5 5 3 5 7 7 5 15 g 15 8 17 8 15 8 15 8 17 8 15 8 15 8 17 8 15 8 15 8 17 8 8 7 8 7 8 7 9 5 9 5 11 1 9 5 9 5 11 1 9 5 9 5 11 1 115 16 115 16 115 46 115 16 2 2 2 2 2 2 2 2 2 2 2 2 5VX500 5VX530 5VX550 5VX530 5VX550 5VX590 5VX530 5VX550 5VX590 5VX530 5VX550 5VX590 50 53 55 53 55 59 53 55 59 53 55 59 15 0 17 9 15 0 17 9 15 0 17 9 15 0 17 9 15 0 17 9 14 6 17 6 15 0 17 9 15 0 17 9 14 6 17 6 15 0 17 9 15 0 17 9 14 6 17 6 1005 1147 1247 976 1050 1182 976 1050 1182 976 1050 1182 5 0 in wg min 13 5 in wg max 225 225 225 225 111 34 120 31 120 31 120 31 089 43 096 41 096 41 096 41 0 24 0 1 0 24 0 1 0 13 0 1 0 13 0 1 262 500 394 000 300 000 600 000 300 000 600 000 300 000 600 000 350 000 525 000 400 000 800 000 400 000 800 000 400 000 800 000 82 82 82 82 15 45 35 65 10 40 30 60 10 40 3 60 10 40 30 60 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 2 426 320 10 20x24x2 10 20 x 24 x 2 10 20 x 24 x 2 10 20 x 24 x 2 5 20 20 4 5 20 x 20 x 4 5 20x20x4 5 20 x 20 x 4 5 20 24 4 5 20 x 20 x 4 5 20 24 4 5 20 x 20 x 4 8 16 x 25 x 2 4 20 x 25x 2 Direct Drive Single Phase Motors Factory Wired for High Speed Operation Forward Curved Fan Wheels with Backdraft Dampers on Each Fan Housing 4 1 11x10
29. 0A 31018 800051 310H LIMNI 5 9 1 l X08 1081802 X0V 831113 0111 1 1 01313 SQOOH Tan SEND Wid 22 8 1 dN 9 2 1 026 61 31 25 2901 000H 83Z1N0N023 19261 1901 039N1H 331138 2113NO8V8 YO 15 H3NOd ON e 161 2y 1102 33SN30NO2 39V110A MOT LdN 61 F F 114405 91 1 09 er 8 6 1 4000 53997 Y Y MIIA ONINJdO 9NIN3dO 172 83MOd 01313 LdN 68 2 1 YOLOW NOOQNI Q3AON39 13NYd PSII 761 2611 6 91 1 0 I IE 1999 207 Ses F H 811 75 1181819 A T 26 Pss m 811 51 VANVd HLIM 318 VIS VA JAYA ADNANDAYS 318VIu VA ANY GWfTIOA 318VINVA 15 YIMOd SNLIVTIndOW 1081802 NIV 019 51102 WW ND HOLOW YOOGNI 1539831 SAGNTONI LHOI3M 9NI1Vt3dO I7 ATMs ve 816 e61 ese 1 LESZ GEE 6101 068 08 zit ver 911 5972 S 0 S W CMV 7 QOOH He 91 5 2h 797 999 919 6 006 89 11 96t2 0 0LL N3DV CV8r 18661 83 02 401 9 1 340 H3dhYQ 7 1 81 719 719 987 987 156111 612 O 0 S WO 26 12 61 127221 3A0N3H Q00H 019 259 91 60 891 1822 120CL N 313V TV8y I y 1 98 69 059 99 lt lt 55111 1522 LOLS W OJXV T Ver 79 129 esr 01 189111 0022 S20LL N 019 ceo 29 osr 967 56111 y912 S20 S W DV ITVS g 72 266 619 687 Loy 6781 1912 02001 N 3 3V CV8y
30. 1ON 090 pue lt 04 8 suoisueuig eseg 9 WIG 9NIddIHS ONII4I 11 8340 198621 00 76 980611 pzez q2 LI 40111804 __ 1041802 0 9 AYY TTL 1194 3Sv8 3QISNI 802 91 38 Wil amvaa asvg Eel 20 28 m 662 195211 17021 66621 665 4 508 59726 savad 41 0 039 NIV Aldans S91 NOT1d0 2 ONINIM 01313 901 9NI13II 12011 ITIN 000 431138 91 VI vf NI 3708 WIG th tr OIWL3NONYG 30 rise SLE 1 1S0VHX3 83004 9017 19 39V110A M01 029 99191 22 VIG 8 1 ror v2 ui E EB e mem 1SnvHx3 B 171 ZA 0p 62 aIv i 9 1023 SGY p Z 6711 16 l 16111 3 5 61701 118011 80 15811 80565384402 1041802 evel 3108 L3NI SVO NNOD NIVUO 96 39NIM 50000 SS399V 0311V1SNI 62015 H109 TINYd_S 399 14 9 0672 LdN 82 1 69 1 01313 110993530005 011235 LV3H dv ONIM 13NVd 9320V 039NIH 8000 55322 71911 43MO18 800001 039NIH 000 55322 10314052 Lig N N 0 038 16759 u3MOd 41314 148 681 OS JOVLIOA MOT LdN 61
31. 28161 62 i 0901 PESE GAUR 11611 ONO23 7 lt 01 310H 13 NI SVO 17191 N 4201 25162 59 15811 nuls b 9871 61 L Q39NIH SSS s 8011 em 8000 55322 876 2 111 PU LUN SONT 4004 55322 m i 38618 NDOQNI 5300 1081802 31113 TE 039NIH 58000 551224 01313 LINO HLIM 0300 12NI dv ONIM 0311V1SNI 01313 SQ00H 39V110A HOT 1dN 61 d ul a ss SENE REPE TNT RUE 131138 ouam 83004 OH ae ese X08 9712 18121 Y Y MATA 0191 8 2 1 1031402 NIVM NS NYNLIY 8 1 801 p 28 61 8 Ske si 91 6 6 152111 5071 J3NVd HLIM ER P ee 3WfY1OA ADN300384 4 18 ANY 15 H3AAOd ONILYINGOW 1 GOOH 91 1 6 4 1102 1V ND YOLOW 1539 1 S3OfT12NI LHOISM SNILVH34O v26 18 019 69 6811 HZH 0705 090 1 3 106 608 065 299 1811 0 2 8962 0S0 019 891 sis 669 Lii 682 TPO Wa 114405 414815 92 958 91 556 909 6911 0052 2912 170 0 xv rvgy d 178 121 96 169 6611 852 2812 OrOCL N 2 s aes 728 221 75 029 1611 vee 0112 0 0 0 xv rvgr AON38 H 781 ell 115 959 97 2 Olle 9 0 1 N 3 8 19L LOL 856 509 911 6072 1592 9E0 S N
32. 292 9 350 0 276 7 350 T 0 205 5 350 35 4 0 328 6 400 0 325 7 400 35 4 0 3611 450 NN 7 0 300 35 4 7 0 Eg 7 300 7 0 300 35 4 7 0 so 350 7 0 350 35 4 7 0 Ss 2 350 7 0 400 35 4 7 0 450 3 5 125 3 5 150 3 5 150 3 5 a 175 3 5 175 3 5 16 175 3 5 200 3 5 15 2 200 2 5 qd 110 14 4 2 5 125 2 5 1095 125 14 4 2 5 117 9 125 2 5 109 7 125 14 4 2 5 124 1 150 2 5 121 0 150 14 4 2 5 135 4 175 7 0 315 1 350 35 4 7 0 350 5 400 7 0 331 6 400 7 0 367 0 450 7 0 364 1 450 7 0 307 2 350 35 4 7 0 342 6 400 7 0 322 2 400 35 4 7 0 357 6 400 7 0 352 2 450 3 5 151 0 175 3 5 169 9 200 3 5 158 5 175 3 5 177 4 200 3 5 173 5 225 3 5 192 4 225 2 5 122 3 125 14 4 2 5 136 7 150 2 5 128 5 150 14 4 2 5 142 9 150 2 5 139 8 175 14 4 2 5 154 2 175 Example voltage is 460 3 60 AB 452v P C BCz464v AC 455v Average Voltage L0 1371 5773 457 Determine maximum deviation from average voltage AB 457 452 5v BC 464 457 2 7 v AC 457 455 2 Maximum deviation is 7 v Determine percent of voltage imbalance Voltage Imbalance 100 x 277 1 5396 This amount of phase imbalance is satisfactory as it is below the maximum allowable 2 IMPORTANT If the sup contact your local electri Itage phase imbalance is more than 2 y company immediately Routing Through Bottom of Unit If wi
33. 4 7 60 020 48 RLA LRA Qty FLA Hp FLA FLA total MOCP 104 5 125 1287 150 6 5 120 5 150 139 8 175 tesa 2 6 6 117 2 125 J 2165 1108 19 10 2 63 5 80 40 6 50 7 2 6 46 0 50 ey e o ss 53 5 70 vo s e m 109 1 125 6 5 1245 150 143 8 175 25 6 gt 25 6 190 s 23 23 10 2 5 6 A A 6 6 121 2 125 p 1 138 7 175 55 6 60 025 107 8 125 13 5 62 1 70 55 5 70 9 90 43 3 50 10 2 10 2 75 2 6 48 4 50 Ga o se 55 9 70 5 v se 88 m 128 3 150 N s 190 25 6 25 6 190 6 5 147 6 175 i713 a Em 164 1 200 187 7 125 0 150 1 190 25 6 25 6 190 6 6 142 5 175 LUE 157 5 200 64 6 70 208 230 460 575 208 230 460 575 208 230 460 75 95 13 5 13 5 95 73 4 90 80 9 100 49 6 60 See Legend and Notes on page 24 LRA 184 184 73 25 6 190 190 95 75 190 190 95 75 75 10 2 10 2 75 2 6 57 1 70 amp 63 3 80 B Min Max 21 Table 8A Electrical Data 48AJ AK AW AY Units without Convenience Outlet cont E SIZE VOLTAGE E SIZE 3 PH 60 Hz
34. 4 L18 0602 OcOMV PvOS S3HONI S3HONI S3H NI 1H9I3M LINA yooy yun jo do NIN 0881 Seuour JO eoueijsip WIN ZEEZ YOU 26 o peaids pue s lqe2 3 LON ONIDSIY NAHM 39V ld NI 38 LSNIN ST3NVd 11V Sd399l8 OL d3OLLON NOILNVO V I 199 086 ppV I Occ PPV 1889 PPV 1978 I L ALON 16 Table 2 Unit Operating Weights BASE UNIT WEIGHTS Ib UNIT 020 025 027 oso 035 036 041 050 051 060 48AJ AK Low Heat 7388 48AJ AK High Heat 7628 48AWIAY Low Heat 7428 48AW AY High Heat 7678 Table 3 Option and Accessory Weights OPTION ACCESSORY Barometric Relief Power Exhaust Mod Power Exhaust Cu Tubing Cu Fin Condenser Coil Outdoor Air Hood Crate and Packaging Less Hoods Weight Outdoor Air Hoods Filters Hail Guard Roof Curb 14 in Table 4 Constant Volume Fan Motor Weights CV MOTOR WEIGHTS Ib HIGH MOTOR UNIT HP VOLTAGE EFFICIENCY B 230 460 230 460 re 230 460 230 460 aic x 230 460 30 30 460 83 40 230 460 LEGEND Cu Copper CV Constant Volume FIOP Factory Installed Option HP Horsepower Indoor Fan Motor VAV Variable Air Volume VFD Variable Frequency Drive OPTION ACCESSORY WEIGHTS Ib 025 927 035 036 oso 051 4
35. 5 01313 ONTHSW14 8 9302 HLIM 43114405 137879 53018 dAL NO 123S 55082 8802 3008 53015 2 dAl 91 6 6 191 011215 55082 ivy 358 1911 1061 t 7 2 1 1 Url v WINOZINOH 01 LINN 30 3903 S39NV43101 9NI 13A31 LINN 1261 rel 7 ZARA 2 6 S 66 SL 06 e NI 7930 NI 7930 E 1211 26112 2 ni S3H2NI ONY 5338930 tyr SNOISN3NIQ 483 80552844402 ONY 815830802 p 80552344802 83583002 F 70751 6 212 1162 dAl 97 815 11 v e 1 NMOHS SV QiHOlld 38 A INO NVO LINN I 839NYH2X3 1V3H JHL ONY 8011235 NOOQNI JHL 30 NIVUO 3H NI YJLYM 9NIQNYIS IN3A3Nd OL dans T ALON e WAN S 176011 91 1 r 1133 019 e S3HONI SNOISNAWIG H3H IO TIY SH3 LL3IATTTIIA NI NI SNOISN3WIG SHHONVH8 HO S440 AlddNS ANY OL LONG T Y 1 AHL NO MOGT3 06 V GATIVLSNI 38 LSAW IWAH OIHLO3 T3 SLINN T 719315 Q3ZINVATVO 1 dd OL S1Hvd gu JOOH GAIEWASSVSIC qaddilHS SI 00vso0gunidHHO AHOSS3OOV JOOH 1HVvd 30 ACISLNO OL SNOISN3MWIG 03110945 3SIMH3H IO 593731 1181 SALON 91 1 6 Jant 090 pue LGOXV fV8r 9179
36. 5 6 265 4 3 265 2 65 59 4 i ea a e a 230 25 6 265 34 3 265 2 66 54 0 ea 040 3 3 2 6 mm gt HH d 208 25 6 265 34 3 265 4 5 i ea 230 25 6 265 34 3 265 4 6 6 54 0 041 23 6 E 3 3 2 6 mm EE d CEN 208 34 3 34 3 265 4 65 ea 23 6 CIE dh Bees 230 34 3 34 3 265 4 66 i ea 23 6 DFA 2 050 ER 3 3 DEORA 2 6 DENN 7 See Legend and Notes on page 28 27 CONVENIENCE OUTLET M 210 6 234 2 227 1 250 7 246 3 269 9 205 7 229 3 220 7 244 3 238 2 261 8 102 0 114 6 109 5 122 1 118 2 130 8 80 4 90 0 86 6 96 2 92 9 102 5 210 6 234 2 227 1 250 7 246 3 269 9 205 7 229 3 220 7 244 3 238 2 261 8 102 0 114 6 109 5 122 1 118 2 130 8 80 4 90 0 86 6 96 2 92 9 102 5 257 2 280 8 276 4 300 0 292 9 316 5 250 8 2744 268 3 291 9 283 3 306 9 120 9 133 5 129 6 142 2 137 1 149 7 97 7 107 3 NNINNINN NN oo oo oo oo NN oo aalaalanlaaloo NNINNINN SD S Sol ooc ocl oeo o AM oo aalaalaalooloo SNS SN N SN ooj oo ovo oo oo NN oo OG oi oo oojoo oo an an 25 104 0 2 5 113 6 25 110 2 2 5 119 8 POWER SUPPLY Fuse or CA Brkr 250 250 250 300 300 300 225 250 250 250 300 300 110 125 125 125 150 150 9
37. 50 5VX570 5VX570 5VX560 5VX530 5VX550 5VX570 5VX650 5VX530 5VX550 5VX570 5VX650 55 57 57 56 53 55 57 65 53 55 57 65 15 0 17 9 14 6 17 6 14 6 17 6 15 0 17 9 15 2 17 5 14 7 17 2 14 2 17 0 14 2 17 0 15 2 17 5 14 7 17 2 14 2 17 0 14 2 17 0 1061 1154 1249 930 1019 1086 1197 1214 1019 1086 1197 1214 5 0 in wg min 13 5 in wg max 225 225 225 120 81 120 31 120 81 096 41 096 41 096 41 0 24 0 1 0 36 0 13 0 1 0 13 300 000 600 000 582 000 873 000 582 000 873 000 400 000 800 000 776 000 1 164 000 776 000 1 164 000 82 82 82 10 40 30 60 10 40 30 60 10 40 30 60 3 5 3 3 3 3 8 5 3 3 3 3 2 3 3 426 426 426 320 320 320 10 20 24 2 16 20 x 24 x 2 16 20 x 24 x 2 5 20x20x4 8 20 x 20 x 4 8 20x20x4 5 20 24 4 8 20 x 24 x 4 8 20 x 24 x 4 8 16 x 25 x 2 12 16x 25 2 4 20 x 25 2 6 20 x 25 x 2 Direct Drive Single Phase Motors Factory Wired for High Speed Operation Forward Curved Fan Wheels with Backdraft Dampers on Each Fan Housing 4 1 6 1 11 10 11 10 15 Sizes 020 040 Circuit 1 uses the lower portion of condenser coil Circuit 2 uses the upper portion Sizes 041 060 Circuit 1 uses the left condenser coil Circuit 2 the right All units have intertwined evaporator coils TRollout switch is manual reset uoneunoju LI Bld 0903AV MV8t O900AV MV 8h OSOAV MVOS sun 090 pue 60 jesuepuoo 1eddoo 10 562 shun 050
38. 50 500 725 285 651 45 Packaging Only 146 410 060 450 675 255 219 585 Table 5 Variable Volume Fan Motor Weights VAV MOTOR WEIGHTS Ib EFFICIENCY MOTOR Be cle iy EFFICIENCY IFM IFM IFM 94 141 92 i 177 164 m 250 156 242 217 15 305 220 310 250 20 386 258 350 309 25 446 319 454 355 3n 552 359 494 415 680 410 625 LEGEND AND NOTES FOR TABLES 2 5 NOTES 1 Base unit weight includes outdoor air hoods Base unit weight does NOT include indoor fan motor ADD indoor fan motor FIOPs and accessories for TOTAL operating weight 2 The VAV motor weights include indoor fan motor and the VFD variable frequency drive VFD transducers and associated wiring 17 051 40 Prem 060 40 Prem NOTES 1 125 677 1 375 895 1 625 1096 1 125 677 1 375 962 1 625 1106 1 375 819 1 625 1096 1 625 1187 1 375 884 1 625 1096 1 625 1187 1 625 1005 1 625 1147 1 875 1247 1 625 976 1 625 1050 1 875 1182 1 625 976 1 625 1050 1 875 1182 1 625 976 1 625 1050 1 875 1182 1 625 1061 1 875 1154 1 875 1247 Table 6 Evaporator Fan Motor Data MOTOR SHEAVE BUSHING PITCH DIAMETER DIAMETER in in BK55 4 NONE 1 125 2BK50 i NONE 1 375 2B5V56 B 1 625 BK55 NONE 1 125 1B5V60 H 1 375 2B5V54 B 1 625 2BK50 NONE 1 375 2B5V56 B 1 625 2B5V58 B 1 625 5 8 1 4 7 9 4 7 9 2BK50 H 1 375 2B5V56 B 1 625 2B5
39. GL 80104 400481 CLIN 0300 ND 52 EGZIL 0311V1SNT 01313 SQ008 8617 18121 SGOOH H321N0NO23 06 291 i m 09 1 LESE 15071 02 61 3199 TTT 10 2 NER PEN 6 6l 172 431138 JIYLINOYYE YO LSMVHXI H3MOd ON 7 T cu3A0 dOl v2 92 9 8 M3IA SNIN340 114406 03A0N38 13NYd dm 1 d 1 9 Z lt 4 1 3NVd HLIM L A 6 6l 9NIN3dO 561 nana iff 1519 2216 ve Y u i a 1 1 1041402 797 000 HLIM gon 52791 9NIN3dO YIdNYG g g Q3AOWJY GOOH T cm _ 01 340914 335 ae 992 SLHOTIM YIANYOD 01211 01211 rozzi 60 OL 7 00708 0 00708 ONILVH3dO ALIAVYS 10 S831N32 301 S 0 020AV MV8t suoisueuiq eseg 14 SRL CN 1311 Viva m w matum ye 61 9 S 6 2 01313 YI 8 PREA VIO 1791 2 1 2 78021 3599 ity r 2 62 S9 26 1 29 2161 S35V1d v dAl STIVH 3SVH 3QISNI 2111237 112221 105211 8621 1911 91711 48 26 1 6 26 11 6 19181 1880 16921 02011 991 xog 26181 0 26162 11 211 67 2615 0 109102 op T ABV xov 18911
40. NN c ALIAVHD JOH3IN30 5 15 H3ZINONOO3 SGNTONI S1H9I3M L SALON 050 9E0x V I V8t suoisueuiiq eseg 614 ONIddlHs 19921 Cona TNWS3AO e 7252 NOTIISOd 2 16 7 6 901 9NILJIl NI 310H 15221 2 6 2 780 91 VIO S 8 8 1 0 JW 99 2 1 29 8521 532 14 7 dAl vty 35 8 3QISNI 115 26161 1 66 26 61 512 Uni o 1990 ELG 2 9NIUIM 01313 26162 6 1581 0 038 2 91 6 02 VIG 91 uf 15291 TTD Ti 0 2 0 114405 0138 NOIldO SQOOH 919 ce l be SLY 431138 OIUI3AONVS JOVLIOA MOT 2 1 6v 8 1 0f 26 61 6 i pour 1SnvHX3 43104 Y Ir E Ptr V 1 91 1 6
41. NOO ON 5 dOL S3ONVHV3IO LINN ALIAVHO JOH3IN3O 5 zZ 15 H3ZINONOO3 ANTONI SIH ISA 71 SILON 10 090 pue LGOAV MV8t suoisueuilg yun eseg 6 Pld NIG ONIddIHS 19790611 99621 HEIN _ ONILATI 188821 1502961 or 99 irl P NOL 04 ONIL411 06 16 M ec 3SV8 3QISNI 91 2 56221 012 4 7021 m 96 358 2566 0 8 0111 2 01913 95211 30Y1d V dAl Pu SEM 190171 1912 B iio av IATXQY mE 39V110A MOT 11553 n give 1221 VIO 8 1 al Wr m uly y j NU 1440 a in b 15691 Lie 11 116111 1701 E VENDENT N023 TTE L rsg 031WISNI 2L L a 01313 13 53599 3108 LIINI 5 9 NNOD NIVNQ 80565344402 1081NO2 9 2 ONIM 51015 8011235 IV3H LIN p9 0672 a 039NIH 58000 SS322V lang 553224 039NIH 3000 55322 039NIH NOOQ 55329 X08 TOYLNOD XhY S31114 eee Y3MOd 01313 LAN 68 05 p and ond 672 LINN HLIM Q30019N1 966 JOVLIOA MOT 1dN 61 SL G37 IVISNI 01313 0009 000H 8371808023 L0 LLL 180261 1 a 169 peer 9 21 ese 98 61 V V
42. O 8 i i y 2 T WN Wh by 013 3 IM W3NHO2 8 Y IHOIJM 3ZIS LINN Nun138 72 9NT1V8 340 S3HONI NI SNOISN3WIQ H3HIO 9502 2611 981 6251 0b av 8 gt l 019 OGO L N3AV TV8Y 2 TV SH313WITIIN NI NI SNOISNANIQ 9 666l 7811 2081 6571 2 101 w e 9 759 060 S W OWV nv8r L 2 l2 G61 1881 691 1921 6071 8 8 OL 8 0529 0 1 6781 2891 veel er L E 0609 170 3 W OWV r var 3579 NOO3H SI LI SSVNNNG NO GALNNOW SI 681 091 iret 6871 vrtit wit 6 E19 OVO 1 30ISNI 0711 2 1 S dl GND AHOSS3OOV OL d3HOVL tigi zest 1951 0r orte 7165 1 SIOnd WOLIOS S 6211 6951 ezet 071 8 1 OL 1 0 8 7165 9 01 IN3IW1HVd3G ONIHSSNION3 NOLL 1691 8561 0521 seet v 6 17 6 01 1 v186 9 0 S WO VOrlddv HalHHVO LOVLNOO SSONVYVS1O 7 i 1 13 1 13 81 VNOl VH3dO ANY 3OIAH3S H3TIVWS Hy MAE EA N V lt 5419340 V V 6 21 0 p 3qlS 1V3H 6581 9 3dIS HAZINONOOA 6151 0 7 09 H3SN3QNOO SLINr 01 S3ONVHV31TO LINN ALIAVHD JOH3IN3O a1s H3ZIINONOO3 3Qf11ONI S1H9I3M L S3
43. ON W1 and W2 ON 020 050 0 13 051 060 0 13 Settings may be changed slightly to provide a greater degree of comfort for a particular installation Staged Gas Control Option Thermistors If the unit is FIELD SUPPLIED THERMOSTAT equipped with the staged gas heat option supply air ther LIGHT mistors must be installed Three supply air thermistors are O shipped with staged gas units and are inside the heating sec Rid fyi va wa G C X tion The supply air thermistors should be located in the supply duct with the following criteria Downstream of the heat exchanger cells R Yi a wa G x Equally spaced as far as possible from the heat 1 2 3 4 5 6 exchanger cells TB4 In a duct location where none of the supply air ther Fig 20 Field Control Thermostat Wiring mistors are within sight of the heat exchanger cells na duct location with good mixed supply air portion of the unit T55 SPT T56 SPT SPT Space Temperature Sensor For constant volume ap plications the ComfortLink controls can also be used with T55 and T56 space temperature sensors that use a 10K ther mistor The T56 sensor also has the capability for a config urable temperature set point offset For variable air volume ap plications only the T55 sensor can be used Install sensor according to the installation instr
44. OR POWER SIZE RANGE Cir A No 1 Cir A No 2 Cir B No 1 Cir B No 2 FAN MOTOR FAN MOTOR EXHAUST POWER SUPPLY ABA Min Max RLA LRA RLA LRA FLA ERA LA s SLA oral MOCP 250 5 300 6 5 354 305 1 350 208 34 3 265 34 3 265 34 3 265 34 3 265 ea 2862 350 321 6 400 318 7 400 354 354 1 450 244 3 250 5 sa 2 39 6 6 2 34 3 2 4 4 3 2 4 3 2 30 3 265 34 3 34 3 265 34 3 265 276 8 350 35 4 312 2 350 306 8 400 20 27 117 6 125 18 9 136 5 150 126 3 150 ea 30 40 133 8 150 18 9 152 7 175 148 8 200 94 7 110 101 0 125 ea 32 107 2 125 14 4 121 6 150 118 5 150 132 9 150 308 1 350 343 5 400 a 324 6 400 357 1 450 300 2 350 35 4 335 6 350 55 315 2 350 345 2 400 147 5 175 166 4 175 155 0 175 170 0 200 18 9 188 9 225 119 8 125 18 9 138 7 150 126 0 150 137 3 175 LEGEND Example Supply voltage is 460 3 60 FLA Full Load Amps AB 452v Heating Air Conditioning and Refrigeration BC 464 v LRA Locked Rotor Amps AC 455v 452 464 455 MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection E Average Voltage 3 NEC National Electrical Code n 1371 RLA Rated Load Amps c US 8 Lis reet 457 Fuse or HACR circuit breaker per NEC 221 NOTES Determine maximum deviation from average voltage 1 In compliance with NEC requirements for multimotor an
45. PT coupling for field power wiring and 3 4 in NPT coupling for 24 v control wiring are provided in basepan In the side post there are two 21 2 48A020 035 or 3 in 48A036 060 knockouts for the field power wiring See Fig 4 9 If control wiring is to be brought in through the side of unit a 7 g in diameter hole is provided in the condenser side post next to the control box Do not route control wiring in the same conduit as power wiring If disconnect box is mounted to corner post be careful not to drill or screw into the condenser coil TB1 FIELD SUPPLIED DISCONNECT PER NEC EQUIP GND FIELD INSTALLED DISCONNECT OPTIONAL FACTORY INSTALLED DISCONNECT 5 11 21 12 22 FIELD POWER WIRING 13 23 1 FACTORY INSTALLED DISCONNECT LEGEND GND Ground NEC National Electrical Code TB Terminal Block Fig 19 Field Power Wiring Connections Table 8A Electrical Data 48AJ AK Units without Convenience Outlet UNIT VOLTAGE COMPRESSOR CONDENSER EVAPORATOR POWER power suPPLY SIZE co Hz RANGE Cir A No 1 Cir A No 2 Cir No 1 Cir B No 2 FAN MOTOR MOTOR EXHAUST 103 2 125 134 7 175 47 4 50 5
46. V58 1 625 2B5V50 i B 1 625 2B5V56 B 1 625 2B5V62 B 1 875 Naaj 6 aan 2B5V58 3B5V52 3B5V58 3B5V64 2B5V94 3B5V52 3B5V58 3B5V64 2B5V94 9 9 3 5 5 3 5 1 1 1 1 1 1 1 1 1 2 2 1 1 2 2 O O1O1 9 5 1 Motor shaft speed is 1750 rpm fan shaft diameter is 115 1 inches 2 All indoor fan motors meet the minimum efficiency requirements as established by the Energy Policy Act of 1992 EPACT effective October 24 1997 RETURN AIR SUPPLY AIR CONDENSATE DRAIN Fig 12 Air Distribution Thru the Bottom 18 1 1 7 2 2B5V52 3 B 1 625 2B5V56 27 B 1 625 2B5V74 5 B 1 875 2B5V52 3 B 1 625 2B5V56 7 B 1 625 2B5V74 5 B 1 875 2B5V52 3 B 1 625 2B5V56 T B 1 625 2B5V74 5 1 875 2B5V56 7 B 1 625 2B5V62 2 B 1 875 2B5V66 1 875 ECONOMIZER AIR FAN SHEAVE BUSHING BELT BELT PITCH DIAMETER Quantity TENSION DIAMETER in P N Ib at 25 in in 1B5V124 124 1 9375 BX56 8 2B5V86 8 6 B 1 9375 BX50 8 2B5V90 B 1 9375 2 5VX530 9 1B5V124 12 1 9375 BX56 8 1B5V110 11 1 9375 5VX570 11 2B5V86 1 9375 2 5VX530 9 8 0 1 8 9 1 gt 2B5V94 1 9375 2 BX50 2B5V90 f 1 9375 2 5VX530 1 2B5V86 1 9375 2 5VX530 1 2B5V94 1 9375 2 BX50 2B5V90 1 9375 2
47. V8t suoisueuig eseg t WIG 9NIddlHS mM 9N11311 11 83 0 0262 901 9NI1311 NI 110H 18911 Ceri ONIYIM 01313 VIO 66 8 8 211 16 50004 431138 21813NONVO 2511 06 J 8 S S vid 991 22 12 25162 69 0 15 83404 66 spy 534 3 35 6 26 62 eI e 691 8621 532 14 7 d 178021 2161 12221 06211 m 2 11 6y 991 9191 26 1 29 26 111 22 91 11 18 2 1 6 991 8 1 0 2 61 r S118 3SV8 301541 m 6921 10201 prm s is ns p 26 18 69 2 5 0h V 1 1 1 1 I 109011 e LT JP 967 SLY Ls LSAWHX4 68166 17 26164 11 91 11 81 gt p 3 6711 L i 1081N02 91 1 9 031YVISNI 01313 i AUNA ADN 16111 109 H uv dv NIM LI FECI 26 12 lt 2 2 1681 8 1 lt 1 TINVd 553122 N NOI123S SVO 4 ZEN iN TE liNVd S 322V 13NVd 55322 039NIH 4000 SS122V NOI123S SV9 S 3ov11
48. VAV inverter pressure transducer is locat ed behind the filter access door on the lower inner panel See Fig 33 A section of field supplied 4 in plastic tubing must be run from the high pressure tap on the differential pressure switch and connected to a field supplied tap in the supply air duct The tap is usually located 2 3 of the way out on the main supply duct Remove plug button in panel to route tubing VAV BUILDING PRESSURE TRANSDUCER The VAV building pressure transducer modulating power exhaust pres sure transducer is located behind the filter access door on the 34 lower inner panel See Fig 33 A section of field supplied 4 in plastic tubing must be run from the high pressure tap on the differential pressure switch to the conditioned space The pressure tube must be terminated in the conditioned space where a constant pressure is required This location 1s usually in an entrance lobby so that the building exterior doors will open and close properly Remove plug button in panel to route tubing The low pressure tap is factory routed to the atmosphere For a positive pressure building route the high tap to building air and low tap to atmosphere For a negative pressure building route the high tap to atmosphere and the low tap to building air Step 12 Install All Accessories After all the factory installed options have been adjusted install all field installed accessories Refer to the accessory installa
49. WEATHERMAKER 48AJ AK AW AY020 060 Single Package Rooftop Units Electric Cooling Gas Heating with Scroll Compressor and COMFORTLINK Controls CONTENTS ace A WARNING SAFETY CONSIDERATIONS 1 INSTALLATION 1 36 1 Improper installation adjustment alteration service Step 1 Provide Unit 1 or maintenance can cause property damage personal ROOF CURB injury or loss of life Refer to the User s Information ALTERNATE UNIT SUPPORT Manual provided with this unit for more details Step 2 Rig and Place Unit 2 Do not store or use gasoline or other flammable va POSITIONING pors and liquids in the vicinity of this or any other ROOF MOUNT appliance tep 3 Field Fabricate Ductwork 2 Step 4 Make Unit Duct Connections 2 What to do if you smell gas Step 5 Install Flue Hood 19 DO NOT try to light any appliance Step 6 Trap Condensate Drain 19 DO NOT touch any electrical switch or use any Step 7 Install Gas Piping nem 19 phone in your building pmi cedo ctrical Connections 20 IMMEDIATELY call your gas supplier from a neigh FIELD POWER SUPPLY bor s phone Follow the gas supplier s instructions FIELD CONTROL WIRING If you cannot reach your gas supplier call the fire Step 9 Make Outdoor Air Inlet depa
50. ab Mount Shown Step 7 Install Gas Piping Unit is equipped for use with natural gas Installation must conform with local building codes or in the absence of local codes with the Na tional Fuel Gas Code ANSI Z223 1 Install manual gas shutoff valve with a s in NPT pressure tap for test gage connection at unit Field gas piping must in clude sediment trap and union See Fig 18 An g in NPT is also located on the gas manifold adjacent to the gas valve ANWARNING Do not pressure test gas supply while connected to unit Always disconnect union before servicing Serious injury could result MANUAL SHUTOFF GAS 4 SUPPLY PRESSURE TAP 1 8 NPT PLUG TO UNIT SEDIMENT TRAP Fig 18 Field Gas Piping IMPORTANT Natural gas pressure at unit gas connection must not be less than 5 in wg or greater than 13 5 in wg Size gas supply piping for 0 5 in wg maximum pressure drop Do not use supply pipe smaller than unit gas connection OPTIONAL STAGED GAS UNITS See Table 7 for staged gas information Staging pattern is selected during controls start up For complete information and service instructions for Staged Gas Control Units see Control Operation and Trouble shooting literature Table 7 48A Series Staged Gas Control MODEL NUMBER POSITION NUMBER OF 5 staces HEAT SIE S Low 5 stages T High 020 T 053 7 stages High 030 T 051 060 High s 051 060 Low Step 8 Make Ele
51. ctrical Connections POWER WIRING Units are factory wired for the voltage shown on the unit nameplate Provide a unit safety disconnect switch in the main power supply to each unit see Fig 19 Select switch size and mount ing location in accordance with applicable local codes or National Electrical Code NEC If combining the functions of safety disconnect with maximum overcurrent protection MOCP fuses fused disconnect coordinate safety switch size with MOCP size data as marked on unit informative plate Unit may be equipped with optional factory installed non fused disconnect switch see Fig 19 Provide maximum overcurrent protection devices fuses or HACR breakers per 20 local codes in branch circuit wiring remote from unit Observe requirements of NEC Article 440 Install service switch upstream of remote fuses if required The main power terminal block is suitable for use with aluminum or copper wire See Fig 19 Units have circuit breakers for compressors fan motors and control circuit The unit must be electrically grounded in accordance with local codes or in absence of local codes with NEC ANSI CI latest year FIELD POWER SUPPLY Unit is factory wired for volt age shown on unit nameplate See Tables 8A and 8B for elec trical data Field wiring can be brought into the unit from bottom through basepan and roof curb or through side of unit corner post next to control box 3 N
52. d be attached to the roof curb Supply and return duct dimensions are shown in Fig 4 6 Air distribution is shown in Fig 12 Refer to installation instructions shipped with roof curb for more information 48AW AND AY UNITS Remove shipping covers from supply and return air openings Attach field supplied ductwork to unit Connect to the unit with a single duct for all supply openings and with a single duct for all return openings Splitting of the airflow into branch ducts should not be done at the unit Sufficient duct length should be used prior to branch ing to ensure the air temperatures are well mixed within the ductwork See Fig 7 9 for duct opening dimensions Secure all ducts to building structure Air distribution is shown in Fig 7 9 and Fig 13 Install accessory barometric relief or power exhaust in the field fabricated return ductwork Refer to Step 10 Position Power Exhaust Barometric Relief Damper Hood section on page 33 for more information Instructions continued on page 19 SHUN S 0 020s V rV8t q1n2 joog 614 1 MV13Q0 335 91 1 32S 8402 1004 Z y LA S3QIS v dAl NO 123S 55082 8802 3004 91 SU3NUOD v dAL 19561 8 1 31995 vl Z 117130 28 rr t g F 9217 91 1 291 re 11621 8 G vII j 7261 786 dil bv 09 v 8
53. d combination 2425 ay load equipment refer to NEC Articles 430 and 440 the overcurrent AC 457 455 22 protective device for the unit shall be fuse or HACR breaker The Canadian units may be fuse or circuit breaker UH Maximum deviation is 7 v 2 Unbalanced 3 Phase Supply Voltage Determine percent of voltage imbalance Voltage Imbalance 100 1 53 This amount of phase imbalance is satisfactory as it is below the max imum allowable 2 Never operate a motor where a phase imbalance in supply voltage is greater than 2 Use the following formula to determine the percent of voltage imbalance Voltage imbalance max voltage deviation from average voltage 100 average voltage 24 Table 8B Electrical Data 48AJ AK AW AY Units with Convenience Outlet VOLTAGE COMPRESSOR CONDENSER EVAPORATOR POWER POWER SUPPLY RANGE Cir A No 1 Cir A No 2 Cir B No 1 Cir B No 2 FAN MOTOR FAN MOTOR EXHAUST OUTLET Min tax LA marna ay FLA He tA MCA m 23 184 23 184 10 2 2 2 2 2 VOLTAGE 3 PH 60 Hz NINN INN oojoo 16 7 111 5 125 23 6 135 2 150 208 187 229 23 18 5 6 5 127 5 150 e me 1 230 207 253 184 F EE P 146 8 175 110 2 125 460 414 508 575 518 632 BB 73 208 187 184 25 6 190 m kna HEH is De Ee Lm L8 i
54. d gas heat Building and duct static pressure control Fire shutdown and smoke control Diagnostics and monitoring For constant volume applications a thermostat T Stat or space temperature sensor SPT will be required T STAT Conventional Thermostat Unit can be con trolled with a Carrier approved accessory electro mechanical or electronic thermostat that has two stages of cooling two stages of heating control and an output for indoor fan control It may also include time of day scheduling or use the scheduling routines built into the ComfortLink controls Install thermostat according to the installation instructions included with accessory thermostat and the unit wiring dia grams Locate thermostat assembly on a solid interior wall in the conditioned space to sense average temperature Route thermostat cable or equivalent single leads of colored wire from subbase terminals through conduit into unit to low voltage connection in the main control box For thermostat TB4 connections see Fig 20 NOTE For wire runs up to 50 ft use no 18 AWG American Wire Gage insulated wire 35 C minimum For 50 to 75 ft use no 16 AWG insulated wire 35 C minimum For over 75 ft use no 14 AWG insulated wire 35 C Minimum All wire larger than no 18 AWG cannot be directly connected at the thermostat and will require a junction box and splice at the thermostat Set heat anticipator settings as follows SIZE STAGE 1 STAGE 2 W1
55. ding Foam Strip to Cross Member BLOCKOFF BAFFLE GRAY FOAM STRIP Fig 28 Adding Seal Strip to Block Off Baffle 33 MOUNTING ANGLE FILTER TRACK ASSEMBLY Fig 29 Mounting Angle Attached to Filter Track Assembly BLACK SEAL STRIP CENTERED FILTER COVER Fig 30 Attaching Seal Strip to Filter Cover Step 10 Position Power Exhaust Barometric Relief Damper Hood All units are shipped with the hoods folded inside the unit in a shipping position For 48AJ and AK units the hood must be tilted out once the unit is in stalled On 48AW AY units designed for horizontal supply and return the assemblies will have to be relocated to return ductwork See Fig 31 for dimensions and details All electrical connections have been made and adjusted at the factory The power exhaust blowers and barometric relief dampers are shipped assembled and tilted back into the unit for shipping Brackets and extra screws are shipped in shrink wrap around the dampers If ordered each unit will have 4 48AJ AK AW AY 020 050 units or 6 48AJ AK AW AY051 and 060 units power exhaust blowers and motors or baromet ric relief dampers 1 Remove 9 screws holding each damper assembly in place See Fig 32 Each damper assembly is secured with 3 screws on each side and 3 screws along the bottom Save screws A CAUTION Be careful when tilting blower assembly Hoods and blow ers are heavy and can cause injury 1f dropped
56. ed in the field Wiring consists of shielded 3 conductor cable with drain wire The system elements are connected to the communication bus in a daisy chain arrangement The positive pin of each system element communication connector must be wired to the positive pins of the system element on either side of it the negative pins must be wired to the negative pins and the signal pins must be wired to signal ground pins Wiring connections for CCN should be made at the TB3 terminal block using the screw terminals The TB3 board also contains an RJ14 CCN plug that can be used to connect a field service computer or other CCN device tempo rarily There is also an RJ14 LEN local equipment network connection that is used to connect a Navigator device or download software Conductors and drain wire must be 20 AWG minimum stranded tinned copper Individual conductors must be insulat ed with PVC PVC nylon vinyl Teflon or polyethylene An aluminum polyester 10096 foil shield and an outer jacket of PVC PVC nylon chrome vinyl or Teflon with a minimum operating temperature range of 20 C to 60 C 4 F to 140 F is required Table 9 lists cables that meet the requirements Table 9 CCN Connection Approved Shield Cable MANUFACTURER CABLE PART NO Alpha 2413 or 5463 American A22503 Belden 8772 Columbia 02525 IMPORTANT When connecting to CCN communi cation bus to system elements use color coding system for the entire network to
57. ernally Enhanced Copper Tubes Aluminum Plate Fins with Intertwined Circuits 3 g 8 3 8 3 8 3 15 3 15 4 15 4 15 31 7 31 7 31 7 31 7 Centrifugal Type 2 20X15 2 20X15 2 20 X 15 2 20X15 Belt Belt Belt Belt 8 000 10 000 11 000 12 000 5 10 15 5 10 15 10 15 20 10 15 20 184T 215T 254T 184T 215T 254T 215T 254T 256T 215T 254T 256T Ball Ball Ball Ball 1200 1200 1200 1200 4 8 4 4 5 7 4 8 6 1 5 5 4 4 4 9 5 9 4 4 5 7 5 9 11 8 13 8 15 8 118 13 8 15 8 13 8 15 8 15 8 13 8 15 8 15 4 12 4 8 6 9 1 12 4 11 1 8 7 9 4 8 1 8 7 9 5 9 1 8 7 115 16 115 16 115 46 115 16 1 1 2 1 1 2 2 2 2 2 2 2 BX56 BX50 5VX530 BX56 5VX570 5VX530 BX50 5VX530 5VX530 BX50 5VX530 5VX530 56 63 53 56 57 53 50 50 53 50 53 53 16 0 18 7 15 6 18 4 15 0 17 9 15 6 18 4 15 6 18 4 15 0 17 9 15 6 18 4 15 0 17 9 15 0 17 9 15 6 18 4 15 0 17 9 15 0 17 9 677 895 1096 677 962 1106 819 1096 1187 884 1096 1187 5 0 in wg min 13 5 in wg max 225 225 225 225 111 34 111 34 11 34 1111 34 089 43 089 43 089 43 089 43 0 24 0 24 0 24 0 24 0 13 0 13 0 13 0 13 262 500 394 000 262 500 394 000 262 500 394 000 262 500 394 000 350 000 525 000 350 000 525 000 350 000 525 000 350 000 525 000 82 82 82 82 15 45 35 65 15 45 35 65 15 45 35 65 15 45 35 65 3 5 3 5 3 5 3 5 3 5 3 5 3 5 3 5 2 2 2 2 426 426 426 426 320 320 320 320 10 20 24 2 10 20 x 24 x 2 10 20x24x2 10 20 x 24 x 2 5 20 20 4 5 20 20 4 5 20 20 4 5 20 20 4 5 2
58. f the filter track See Fig 29 12 Attach 9 green speed clips provided to hood side panels Engagement section of clip faces up and towards the out side of the hood side panels 13 Attach remaining mounting angle to other end of the filter track with no 10 screws provided 14 Place filter track assembly in bottom of hood by attaching to hood with speed clips and gasketed screws provided NOTE Be sure the filters are installed with the airflow in the correct direction 15 Attach black seal strip provided to filter cover Seal strip should be applied centered over the holes of the one flange making sure to fully cover holes and centered over the other large flange See Fig 30 16 Slide two 20 x 25 in filters into cross members of hood assembly Attach filter cover over filters with screws and speed clips provided FLANGE SEAL HOOD SIDE Fig 23 Adding Seal Strip to Top of Hood Sides FILTER HOOD SIDE 2 COVER HOOD TOP SPEED CLIPS MOUNTING C us ANGLE SIDE CROSSMEMBER FILTER TRACK BLOCKOFF ASSEMBLY BAFFLE WITH SCREWS Fig 24 Economizer Hood Assembly Right Side Center Economizer Hood Shown MOUNTING FLANGE HOOD SIDE Fig 25 Adding Seal Strip to Sides of Hood Top Mounting Flange HOOD TOP HOOD SIDE Fig 26 Adding Seal Strip to Back of Hood Top Mounting Flange GRAY FOAM STRIP CROSS MEMBER lt Fig 27 Ad
59. hown in Fig 1 3 Improperly applied gasket can also result in air leaks and poor unit performance ALTERNATE UNIT SUPPORT When the preferred curb or slab mount cannot be used support unit with sleepers on pe rimeter using unit curb support area If sleepers cannot be used support long sides of unit refer to Fig 4 10 with a mini mum number of 4 in x 4 in pads spaced as follows 48AJ AK AW AY020 035 units require 3 pads on each side 48AJ AK AW AY036 050 units require 4 pads on each side 48AJ AK AW AY051 and 060 units require 6 pads on each side Unit may sag if supported by corners only Step 2 Rig and Place Unit Inspect unit for transportation damage See Tables 1 6 for physical data and specifications File any claim with transportation agency Do not drop unit keep upright Use spreader bars over unit to prevent sling or cable damage This unit must be handled with a crane and can not be handled by a fork truck Level by using unit frame as a reference leveling tolerance is shown in Fig 1 3 See Fig 10 for additional information Unit operating weight is shown in Table 2 NOTE On retrofit jobs ductwork may be attached to the old unit instead of a roof curb Be careful not to damage ductwork when removing old unit Attach existing ductwork to roof curb instead of unit Four lifting lugs are provided on the unit base rails as shown in Fig 4 10 Refer to rigging instructions on unit POSITIONING Mainta
60. ill size Natural Gas Std Liquid Propane Alt Thermostat Heat Anticipator Setting Stage 1 amps Stage 2 amps Gas Input Btuh Stage 1 Low Heat High Heat Stage 2 Low Heat High Heat Efficiency Steady State Temperature Rise Range Manifold Pressure wg Natural Gas Liquid Propane Gas Valve Quantity HIGH PRESSURE SWITCH psig Cutout Reset Auto MIXED AIR FILTERS Quantity Size in Standard Pleated Std Alt OUTDOOR AIR FILTERS Quantity Size in POWER EXHAUST Motor Quantity Hp Fan Diameter Width in LEGEND Al Aluminum Cu Copper Table 1 Physical Data 48AJ AK AW AY Units cont 05 0 See Operating Weights Table 041 40 1 SR 812AT 1 SR 812AT 1 SR 942AT 2 SR 942AT 1 SR 942AT 2 SR 942AT 2 SR 942AT 2 SM125 2 SR 942AT 2 SM125 2 2 2 2 Precharged Precharged Precharged Precharged R 22 33 0 36 0 36 0 47 0 38 0 58 0 47 0 47 0 Internally Enhanced 3 8 Copper Tubes Aluminum Lanced Aluminum Pre Coated or Copper Plate Fins 1 2 2 2 4215 2 15 4 15 2 15 4 15 4 15 4 15 33 3 66 7 66 7 66 7 Propeller 14 500 30 000 30 000 30 000 2 30 4 30 4 30 4 30 1 1 1 1 Internally Enhanced Copper Tubes Aluminum Plate Fins with Intertwined Circuits 1 2 1 2 1 2 1 2 6 16 4 17 4 16 4 17 31 3 31 3 31 3 31 3 Centrifugal Type 2 20X15 2 20X 15 2 20X15 2 20 X 15 Belt Belt Belt Belt 14 000 14 0
61. in clearance per Fig 4 10 around and above unit to provide minimum distance from combustible materials proper airflow and service access Do not install unit in an indoor location Do not locate unit air inlets near exhaust vents or other sources of contaminated air For proper unit operation adequate combustion and venti lation air must be provided in accordance with Section 5 3 Air for Combustion and Ventilation of the National Fuel Gas Code ANSI 7223 1 American National Standards Institute Although unit is weatherproof guard against water from higher level runoff and overhangs Locate mechanical draft system flue assembly at least 4 ft from any opening through which combustion products could enter the building and at least 4 ft from any adjacent building When unit is located adjacent to public walkways flue assem bly must be at least 7 ft above grade ROOF MOUNT Check building codes for weight distribu tion requirements See Fig 11 Unit operating weight is shown in Table 2 Step 3 Field Fabricate Ductwork Secure all ducts to building structure Use flexible duct connectors be tween unit and ducts as required Insulate and weatherproof all external ductwork joints and roof openings with counter flashing and mastic in accordance with applicable codes NOTE Due to width of the horizontal supply and return duct work provisions should be made for servicing of the outdoor air filters 1 catwalk ove
62. m of unit control box After wiring is in control box make connection to proper terminals on terminal blocks see Field Control Wiring section below IMPORTANT The VAV variable air volume units use variable frequency drives which generate and can radiate radio frequency energy If units are not installed and used in accordance with these instructions they may cause radio interference They have been tested and found to comply with limits of a Class A computing device as defined by FCC Federal Communications Commission regulations Subpart J of Part 15 which are designed to provide reason able protection against such interference when operated in a commercial environment ANWARNING The unit must be electrically grounded in accordance with local codes and NEC ANSI NFPA 70 National Fire Protection Association Electrical shock could cause per sonal injury Affix crankcase heater sticker located in the installers packet to unit disconnect switch Voltage to compressor terminals during compressor operation must be within the voltage range indicated on the unit name plate Phases must be balanced within 295 Use the formula in Tables 8A and 8B to determine the per centage of voltage imbalance IMPORTANT If the supply voltage phase imbalance is more than 2 contact your local electric utility company immediately Unit failure as a result of operation on improper line voltage or excessive phase imbalance co
63. meter in Nominal Fan Shaft Diameter in Belt Quantity Belt Type Belt Length in Pulley Center Line Distance in Factory Speed Setting rpm FURNACE SECTION Supply Line Pressure Range Rollout Switch Cutout Temp F t Burner Orifice Diameter in drill size Natural Gas Std Liquid Propane Alt Thermostat Heat Anticipator Setting Stage 1 amps Stage 2 amps Gas Input Btuh Stage 1 Low Heat High Heat Stage 2 Low Heat High Heat Efficiency Steady State Temperature Rise Range Manifold Pressure in wg Natural Gas Liquid Propane Gas Valve Quantity HIGH PRESSURE SWITCH psig Cutout Reset Auto MIXED AIR FILTERS Quantity Size in Standard Pleated Std Alt OUTDOOR AIR FILTERS Quantity Size in POWER EXHAUST Motor Quantity Hp Fan Diameter Width in LEGEND Al Aluminum Cu Copper Table 1 Physical Data 48AJ AK AW AY Units 020 025 2 027 030 30 See Operating Weights Table 1 SR 812AT 1 SR 942AT 2 SR 782AT 1 SR 782AE 2 SR 942AT 1 SR 942AE 2 SR 782AT 2 SR 812AT 1 SR 942AE 2 2 2 2 Precharged Precharged Precharged Precharged R 22 26 8 33 8 35 8 29 0 14 0 17 8 20 0 30 8 Internally Enhanced 3 8 Copper Tubes Aluminum Lanced Aluminum Pre Coated or Copper Plate Fins 1 1 1 1 2 15 3 15 3 15 4 15 33 3 33 3 33 3 33 3 Propeller 17 200 15 850 15 850 14 500 2 30 2 30 2 30 2 30 1 1 1 1 Int
64. nstitutes abuse and may cause damage to electrical components 29 IMPORTANT On 208 230 v units transformers 1 5 are wired for 230 v If 208 230 v unit is to be run with 208 v power supply the transformers must be rewired as follows For transformer 1 move the black wires connected to termi nal H2 and connect it to terminal H3 For transformers 2 4 that are used for the 24 volt control circuits connect as follows 1 Remove cap from red 208 v wire 2 Remove cap from spliced orange 230 v wire Discon nect orange wire from black unit power wire 3 Caporange wire Splice red wire and black unit power wire Cap wires If the unit is equipped with the optional convenience outlet connect the yellow wire to H2 on transformer 5 IMPORTANT BE CERTAIN UNUSED WIRES ARE CAPPED Failure to do so may damage the transformers FIELD CONTROL WIRING The 48A Series units sup port a large number of control options that can impact the field control wiring The control options that the unit can provide relate to the following parameters CV constant volume VAV variable air volume VVT variable volume variable temperature or Carrier TEMP system control operation Stand alone with a thermostat CV or with a space sen sor CV and VAV Network application with CCN Carrier Comfort Network or other networks Demand ventilation with CO sensor Economizer and economizer with changeover control Stage
65. r A No 1 FAN MOTOR FAN MOTOR EXHAUST RLA UNIT SIZE VOLTAGE 48A 3 PH 60 Hz Min RLA LRA RLA LRA RLA LRA RLA LRA Qty FLA Hp FLA FLA tota MCA MOCP 2 208 187 229 25 6 190 25 6 190 34 3 265 34 3 265 4 eu 20 286 230 207 253 25 6 190 25 6 190 34 3 265 34 3 265 54 0 236 520 259 12 6 125 40 414 508 13 5 95 135 95 16 120 16 120 en 27 0 ia 340 12 6 150 17 0 100 575 518 632 10 2 75 10 2 75 12 9 12 9 ee 22 0 14 27 0 125 2 208 187 229 25 6 190 25 6 190 34 3 265 34 3 265 59 4 Sen z 230 207 253 25 6 190 25 6 190 34 3 265 34 3 265 4 es 54 0 551 E 460 414 508 13 5 95 13 5 95 16 120 16 120 4 27 0 te 575 518 632 10 2 75 10 2 75 12 9 12 9 eo 22 0 E CNET mo me E 208 187 229 34 3 265 34 3 265 34 3 265 47 380 74 8 256 350 gt 23 6 300 230 207 253 34 3 265 34 3 265 34 3 265 47 380 4 68 0 BER Bod 23 6 360 Z E 460 414 508 16 120 16 120 16 120 22 4 175 Ra 34 0 575 518 632 12 9 12 9 12 9 18 6 140 4 d 27 0 128 See Legend and Notes on page 24 Table 8A Electrical Data 48AJ AK Units without Convenience Outlet cont UNIT COMPRESSOR CONDENSER EVAPORAT
66. r ductwork Ducts passing through an unconditioned space must be in sulated and covered with a vapor barrier Outlet grilles must not lie directly below unit discharge The return duct must have a 90 degree elbow before opening into the building space if the unit is equipped with power exhaust To attach ductwork to roof curb insert duct approximately 10 to 11 in up into roof curb Connect ductwork to 14 gage roof curb material with sheet metal screws driven from inside the duct Follow AMCA Air Movement and Control Association guidelines relating to ductwork connections to the unit These guidelines recommend a minimum 2 2 equivalent duct diame ters of straight duct connected to supply air inlet and outlet openings before any transitions fittings dampers etc Failure to adhere to these guidelines may result in system effects which can impact the unit s ability to achieve published performance ANWARNING For vertical supply and return units tools or parts could drop into ductwork and cause an injury Install a 90 degree elbow turn in the supply and return ductwork between the unit and the conditioned space If a 90 degree elbow cannot be installed then a grille of sufficient strength and density should be installed to prevent objects from falling into the conditioned space Step 4 Make Unit Duct Connections 48AJ AND AK UNITS Unit is shipped for thru the bottom duct connections Field fabricated ductwork shoul
67. re Rise Range Manifold Pressure in wg Natural Gas Liquid Propane Gas Valve Quantity HIGH PRESSURE SWITCH psig Cutout Reset Auto MIXED AIR FILTERS Quantity Size in Standard Pleated Std Alt OUTDOOR AIR FILTERS Quantity Size in POWER EXHAUST Motor Quantity Hp Fan Diameter Width in LEGEND Al Aluminum Cu Copper Table 1 Physical Data 48AJ AK AW AY Units cont pos 060 60 See Operating Weights Table 2 5 125 1 5 125 1 SM160 1 SM175 1 SM175 1 8M160 1 5M175 2 2 2 Precharged Precharged Precharged R 22 64 4 98 0 81 0 58 8 98 0 81 0 Internally Enhanced 3 8 Copper Tubes Aluminum Lanced Aluminum Pre Coated or Copper Plate Fins 2 2 4 15 4 15 4 15 66 7 100 100 Propeller 25 600 38 400 38 400 4 30 6 30 6 30 1 1 1 Internally Enhanced Copper Tubes Aluminum Plate Fins with Intertwined Circuits 1 2 1 2 1 2 6 16 4 17 4 17 31 3 48 1 48 1 Centrifugal Type 2 20 15 3 20 X 15 3 20X15 Belt Belt Belt 20 000 20 000 24 000 40 40 40 40 20 25 30 20 25 30 High Eff Prem Eft 25 30 High Eff Prem 256T 284T 286T 256T 284T 286T 324T 324T 284T 286T 324T 324T Ball Ball all 1300 1200 1200 5 7 62 6 7 5 9 5 3 5 9 6 5 9 5 5 3 5 9 6 5 9 5 15 8 17 8 17 8 15 8 17 8 17 8 21 8 21 8 17 8 17 8 21 8 21 8 9 5 9 5 9 5 11 1 9 1 9 5 9 5 18 7 9 1 9 5 9 5 13 7 115 46 115 46 115 16 2 2 2 2 3 3 3 2 3 3 3 2 5VX5
68. ring is brought in through bottom of unit use field supplied watertight conduit to route power wiring through the 3 2 in diameter hole provided in the unit basepan Install conduit connector in unit basepan as shown in Fig 4 9 Route power and ground lines through connector to terminal connections in unit control box as shown on unit wiring diagram and Fig 19 Use strain relief going into control box through 35 s in diameter hole provided After wires are in unit control box connect to power terminal block see Power Wiring section on page 20 Low voltage wiring must be run in watertight conduit from the basepan to control box and through 7 s in diameter hole provided in bottom of unit control box Field supplied strain relief must be used going into the box After wiring is in control box make connections to proper terminals on terminal blocks see Field Control Wiring section on this page Routing Through Side of Unit Route power wiring in field supplied watertight conduit into unit through 2 2 in siz es 020 035 or 3 in sizes 036 060 hole Use field supplied strain relief going into control box through 35 s in diameter hole provided After wires in unit control box connect to power terminal block see Power Wir ing section on page 20 Bring low voltage control wiring through the 7 s in diame ter hole provided in the condenser section side post Use strain relief going into 7 g in diameter hole in botto
69. rtment Adjustments 32 ECONOMIZER AND FIXED OUTDOOR AIR DAMPER Step 10 Position Power Exhaust Barometric A WARNING Relief Damper Hood 33 Step 11 Route VAV Static Pressure Sensor 34 Disconnect gas piping from unit when pressure testing at Step 12 Install All Accessories 35 pressure greater than 0 5 psig Pressures greater than Step 13 Field Modifications 35 0 5 psig will cause gas valve damage resulting in hazardous condition If gas valve is subjected to pressure greater than SAFETY CONSIDERATIONS 0 5 psig it must be replaced before use When pressure testing field supplied gas piping at pressures of 0 5 psig or Installation and servicing of air conditioning equipment can less a unit connected to such piping must be isolated by be hazardous due to system pressure and electrical compo closing the manual gas valve s nents Only trained and qualified service personnel should in stall repair or service air conditioning equipment Untrained personnel can perform the basic maintenance functions of cleaning coils and filters and replacing filters All INSTALLATION other operations should be performed by trained service per sonnel When working on air conditioning equipment observe Step 1 Provide Unit Support precautions in the literature tags and labels attached to the unit and other safety precautions that may apply
70. s flush with the economizer assembly flanges Perform the following procedure to assemble the economizer hood 1 Apply black seal strip provided to outside top edge of hood sides Wrap seal strip over edge to cover top flange 6 hood sides Make sure seal strip covers screw holes Allow strip to overhang s in past the end opposite the mounting flange See Fig 23 2 Assemble hood sides top and cross member with gasketed screws provided See Fig 24 Attach 15 green speed clips provided to hood top 4 Apply black seal strip provided to mounting flanges of hood sides being sure to cover mounting holes See Fig 25 5 Apply black seal strip provided to back of hood top mounting flange Seal strip of hood top mounting flange must press tightly against seal strip of hood side mount ing flanges See Fig 26 6 Add gray foam strip provided to cross members on bot tom tray See Fig 27 7 Attach gray foam strip provided to block off baffle on outer face of flange See Fig 28 8 Remove the screws on each end and along top of damper assembly of unit Remove top 4 screws on each side of filter panel under damper assembly Set hood assembly in place and attach to unit using these screws 9 Remove screws along bottom of damper assembly Locate and mount block off baffle using these screws 10 Assemble 2 filter tracks side by side with the assembled ends together 11 Attach one mounting angle to the assembled end o
71. s requires the use of the optional controls expansion module Demand Limiting The control can also be used with demand limiting control from remote building management systems If a two stage system is going to be used with Redline Limiting where the machine is not allowed to increase load and Load Shed where the load is decreased to a configurable limit in capacity then these can be connected to TB6 terminals 4 and 5 and 5 and 6 This requires use of the controls expansion module Step 9 Make Outdoor Air Inlet Adjustments ECONOMIZER AND FIXED OUTDOOR AIR DAMPER Hoods are used on all units with economizer or adjustable self closing fixed outdoor air damper NOTE If accessory power exhaust or barometric relief pack ages are being added to the unit install power exhaust or baro metric relief before installing economizer hoods Economizer Hood Assembly The economizer hood is shipped in a package secured to the outside of the unit The hood assemblies must be field assembled The 48AW AY units are side supply and side return The return duct limits access to economizer filters from below The 48AJ AK AW AY020 050 units have two hoods on ev ery unit The 48AJ AK AW AY051 and 060 units have 3 hoods on every unit NOTE Before assembly of the economizer hood check along the outer edges of the economizer assembly for any seal strip protruding past the flanges Trim the excess seal strip so that it i
72. tion instruc tions included with each accessory The 48A Series units have a large number of factory installed options which were previously available only as accessories Some of the available options can also be installed in the field if needed In most cases the units have been pre wired so that the accessories can be easily installed Instructions are shipped with each accessory Configuration of the controls for these accessories as well as the factory installed options can be found in the Controls Start Up Operation Service and Troubleshooting Book The following is a list of some of the common accessories Thermostats and space temperature sensors LP liquid propane conversion kit Accessory barometric relief damper Accessory power exhaust Non modulating to modulating power exhaust Condenser coil hail guards Outdoor humidity sensor used for economizer enthalpy changeover Return air humidity sensors used for economizer differential enthalpy changeover Return air smoke detector Controls expansion module used for interface to build ing management systems not typically needed on system with the Carrier Comfort Network CCN sys tem Plugged filter sensor Motormaster amp V low ambient head pressure control IMPORTANT Carrier recommends the installation of field fabricated wind baffles on all vertically oriented condenser coils when operating in environments with prevailing winds of more than 5 MPH
73. to access panel See Fig 14 48AJ AK AW AY0S1 AND 060 UNITS Flue hood and wind baffle are shipped inside gas section of unit To install se cure flue hood to access panel Install the two pieces of the wind baffle over the flue hood See Fig 15 NOTE When properly installed flue hood will line up with combustion fan housing See Fig 16 GAS SECTION ACCESS PANEL Fig 14 Flue Hood Location 48AJ AK AW AY020 050 Units GAS SECTION ACCESS PANEL FLUE HOOD WIND BAFFLE SIDE VIEW TOP VIEW Fig 15 Flue Hood Location 48AJ AK AW AY051 and 060 Units 19 FLUE HOOD SHIPPING LOCATION COMBUSTION FAN HOUSING Fig 16 Combustion Fan Housing Location 48AJ AK AW AY020 050 Shown Step 6 Trap Condensate Drain See Fig 4 9 for drain location Condensate drain is open to atmosphere and must be trapped Install a trapped drain at the drain location One 1 coupling is provided inside the unit evaporator section for condensate drain connection A trap at least 4 in deep must be used See Fig 17 Trap must be installed to pre vent freeze up Condensate pans are sloped so that water will completely drain from the condensate pan to comply with indoor air quali ty guidelines The condensate drain pans are not insulated 1 kA d Fig 17 Condensate Drain Trap Piping Details Typical Roof Curb or Sl
74. uctions included with accessory sensor Locate sensor assembly on a 1 solid interior wall in the conditioned space to sense average UNIT temperature TB5 gt Run wiring to the space sensor as shown in Fig 21 Note that when the remote sensor is used the red jumper wires provided must be connected from TB4 terminal 4 to 5 ie aud TB4 terminal 5 to 1 Fig 21 Space Temperature Sensor Wiring Both the T55 and T56 have a CCN communications port and this should be wired to the CCN Communications TB3 board if it is desired to have access to the CCN through the sensor If more than one T 55 sensor is being used and averaged sensors must be wired in multiples of 4 or 9 as shown in Fig 22 SENSOR 1 SENSOR 2 SENSOR 3 SENSOR4 SPACE TEMPERATURE AVERAGING 4 SENSOR APPLICATION m SENSOR 4 SENSOR 5 SENSOR 6 SENSOR 7 SENSOR 8 SENSOR 9 SPACE TEMPERATURE AVERAGING 9 SENSOR APPLICATION NOTE Use T55 sensor only Fig 22 Space Temperature Averaging Wiring 30 T58 Communicating Thermostat Carrier also has a fully communicating thermostat which if used will be wired to the CCN communication connections on TB3 as described in the Carrier Comfort Network Interface section below Carrier Comfort Network Interface The rooftop units can be connected to the CCN system The communication bus wiring is supplied and install

Carrier 48AJ Air Conditioner User Manual

Contents

Download Pdf Manuals

Related Search

Related Contents