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Copyright 1999 Carrier Corporation

Form 48HJ-11PD

Carrier has designed the Weather-
master series based on customer 
needs and requests to be the most      
efficient and reliable rooftop unit ever 
made.

Features/Benefits

• Most efficient rooftop line for 

cooling using scroll compressor 
technology

• Most efficient rooftop line for 

heating using dimpled heat 
exchangers on all units

• High reliability — non-corrosive 

condensate pans, prepainted 
cabinets and primed interior 
panels, and all units are fully 
protected by internal safeties

• Quietest operation — all 

compressors mounted on 
independent vibration isolators. 
Standard, belt-driven evaporator 
fan motors on all units

• Ease of maintenance achieved by 

self diagnostics on the Integrated 
Gas Controller (IGC), optional 
direct digital controls, standard 
size filters, tool-less filter access, 
simple compressor access, 
permanently lubricated fan 
motors, optional disconnect 
switch, optional 115-v 
convenience outlet, and optional 
hinged access panels

• Exclusive MoistureMiser 

dehumidification package — a 
result of recent advances by 
Carrier in controlling comfort 
levels. This factory-installed 
option significantly improves the 
dehumidification capability of the 
rooftop unit and helps control 
humidity levels in the building.

48HJD/HJE/HJF

Single-Package Rooftop Units

High-Efficiency Electric Cooling/

Gas Heating

3 to 12

1

/

2

 Nominal Tons

Product
Data

48HJ004-007

48HJ008-014

Summary of Contents for 48HJD005

Page 1: ...Standard belt driven evaporator fan motors on all units Ease of maintenance achieved by self diagnostics on the Integrated Gas Controller IGC optional direct digital controls standard size filters to...

Page 2: ...s of charge switch high pressure switch freeze protection thermostat internal compressor overload exclusive Carrier Cycle LOC circuit board that provides anti compressor cycling refrigerant filter dri...

Page 3: ...izing roof penetrations to prevent water leaks Power gas and control connections are made on the same side of the unit to simplify installation The non corrosive sloped con densate drain pan is made i...

Page 4: ...rigeration system 5 Carrier s exclusive Acutrol meter ing device which precisely controls refrigerant flow preventing slug ging and floodback while maintain ing optimum unit performance by metering th...

Page 5: ...air conditioning systems that bring in minimal fresh air In 1989 IAQ concerns caused ASHRAE to recommend increased ventilation for all public buildings Sim ply introducing fresh air into a building h...

Page 6: ...v circuit breaker on 48HJ008 014 units allows room for error without replacing transform ers or fuses Single side utility connections provide easy access to perform any necessary service Color coded...

Page 7: ...tuh First Stage Second Stage OUTPUT CAPACITY Btuh TEMPERATURE RISE F AFUE STEADY STATE EFFICIENCY CALIFORNIA SEASONAL EFFICIENCY Single Phase Units First Stage Second Stage 3 Phase Units First Stage S...

Page 8: ...1 17 1 17 1 17 1 17 Total Face Area sq ft 3 9 3 9 3 9 3 9 EVAPORATOR FAN Centrifugal Type Belt Drive Quantity Size in 1 10 x 10 1 10 x 10 1 10 x 10 1 10 x 10 Nominal Cfm 1200 1600 2000 2400 Maximum C...

Page 9: ...Thermostat Heat Anticipator Setting amps 208 230 460 v First Stage 14 14 14 14 Second Stage 14 14 14 14 Gas Input Btuh First Stage 50 000 82 000 50 000 82 000 120 000 50 000 82 000 120 000 50 000 82 0...

Page 10: ...midification Package Rows Fins in 1 17 1 17 1 17 1 17 Total Face Area sq ft 6 3 6 3 8 4 8 4 EVAPORATOR FAN Centrifugal Size in 15 x 15 15 x 15 15 x 15 15 x 15 Type Drive Belt Belt Belt Belt Nominal Cf...

Page 11: ...00 90 000 120 000 180 000 120 000 180 000 200 000 180 000 200 000 Stage 2 125 000 180 000 224 000 125 000 180 000 224 000 180 000 224 000 250 000 224 000 250 000 Efficiency Steady State 82 82 82 82 82...

Page 12: ...cusensor II Enthalpy Control X Accusensor III Differential Enthalpy Sensor X Liquid Propane Conversion Kit X Condenser Coil Hail Guard X NOx Reduction Kit X Flue Discharge Deflector X Coil Guard Grill...

Page 13: ...estarting for at least 5 minutes after a shutdown Field installed accessory pre vents short cycling of compressor if thermostat is rapidly changed Time Guard II device mounts in the control compartmen...

Page 14: ...TAT ACCUSENSOR II ENTHALPY CONTROL Field installed wall mounted humidistat is used to control operation of the MoistureMiser dehumidification package The humid istat controls the occupied space humidi...

Page 15: ...coil located on the leaving air side of the evaporator coil The location of this coil in the indoor air stream enhances the latent capacity of the 48HJ units by as much as 40 The MoistureMiser package...

Page 16: ...ermits quick and simple compressor access COMPRESSOR HINGED PANEL OPTION 48HJ008 014 UNITS SHOWN EVAPORATOR FAN HINGED PANEL OPTION This is included as a factory installed option It per mits quick and...

Page 17: ...using accessory flue discharge deflector b Bottom of unit to combustible surfaces when not using curb 1 inch Bottom of base rail to combustible surfaces when not using curb 0 inches c Condenser coil...

Page 18: ...urb 0 inches c Condenser coil for proper airflow 36 in one side 12 in the other The side getting the greater clearance is optional d Overhead 60 in to assure proper condenser fan operation e Between u...

Page 19: ...TMPWR002A00 1 2 NPT CRBTMPWR003A00 ROOF CURBS NOTES 1 Roof curb accessory is shipped unassembled 2 Insulated panels 3 Dimensions in are in millimeters 4 Roof curb galvanized steel 5 Attach ductwork to...

Page 20: ...PT CRBTMPWR001A00 3 4 NPT 11 4 NPT 1 2 NPT CRBTMPWR002A00 3 4 NPT CRBTMPWR004A00 ROOF CURBS NOTES 1 Roof curb accessory is shipped unassembled 2 Insulated panels 3 Dimensions in are in millimeters 4 R...

Page 21: ...he simplified method below calculate the approximate mixed air temperature for the SRT evaporator coil Using the outdoor air entering cfm the room cfm and the room exhaust airflow with their respectiv...

Page 22: ...tep II 4 851 Btuh Optional Energy Recycler Supply Fan Motor Heat none Net Sensible Capacity 48 659 Btuh IX Determine the operating watts of the unit a Cooling with Energy Recycler in operation Rooftop...

Page 23: ...62AQ is sized for a minimum of 33 larger than the overcurrent protection device value i e 60 amps x 0 33 20 amps no further subfusing would be required If the overcurrent protection device is greater...

Page 24: ...Temp F Air Ent Condenser Edb Temp F Air Entering Evaporator Cfm BF 1200 0 17 1450 0 19 1600 0 21 2000 0 24 Temp F Air Entering Evaporator Ewb F 72 67 62 72 67 62 72 67 62 72 67 62 75 TC 54 0 50 7 44...

Page 25: ...62 2 56 8 53 5 SHC 30 0 37 2 43 1 31 7 40 4 46 2 33 3 43 4 48 9 36 4 48 9 53 4 kW 6 27 6 19 6 09 6 28 6 21 6 13 6 29 6 24 6 17 6 31 6 27 6 22 48HJ007 6 TONS Temp F Air Ent Condenser Edb Temp F Air En...

Page 26: ...Condenser Edb Temp F Air Entering Evaporator Cfm BF 2550 0 08 3000 0 09 3400 0 11 4250 0 13 Temp F Air Entering Evaporator Ewb 72 67 62 72 67 62 72 67 62 72 67 62 75 TC 119 5 105 7 94 8 123 1 109 1 9...

Page 27: ...5 0 87 3 65 8 85 1 96 0 72 5 96 9 104 8 kW 12 99 12 77 12 50 13 02 12 81 12 55 13 10 12 92 12 74 13 19 13 01 12 91 48HJ014 121 2 TONS Temp F Air Ent Condenser Edb Temp F Air Entering Evaporator Cfm BF...

Page 28: ...Temp F Air Ent Condenser Edb Temp F Air Entering Evaporator Cfm BF 1200 0 17 1450 0 19 1600 0 21 2000 0 24 Temp F Air Entering Evaporator Ewb 72 67 62 72 67 62 72 67 62 72 67 62 75 TC 52 9 47 5 41 5 5...

Page 29: ...56 9 49 2 45 9 SHC 10 9 19 6 28 0 12 5 22 2 31 5 13 5 24 0 34 0 16 5 28 0 38 8 kW 6 26 6 12 6 02 6 28 6 18 6 09 6 33 6 18 6 13 6 33 6 27 6 22 48HJ007 6 TONS Temp F Air Ent Condenser Edb Temp F Air En...

Page 30: ...Ent Condenser Edb Temp F Air Entering Evaporator Cfm BF 2550 0 08 3000 0 09 3400 0 11 4250 0 13 Temp F Air Entering Evaporator Ewb 72 67 62 72 67 62 72 67 62 72 67 62 75 TC 112 4 102 2 92 6 115 2 106...

Page 31: ...29 0 52 9 69 7 35 0 62 4 82 2 kW 12 35 12 15 11 94 12 38 12 13 11 92 12 48 12 27 12 25 12 53 12 30 12 28 48HJ014 121 2 TONS Temp F Air Ent Condenser Edb Temp F Air Entering Evaporator Cfm BF 3750 0 0...

Page 32: ...J004 3 TONS STANDARD MOTOR BELT DRIVE cont Airflow Cfm External Static Pressure in wg 0 7 0 8 0 9 1 0 1 1 1 2 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 900 957 0 39 988 0 43 1039 0 47 1061 0 51...

Page 33: ...Static Pressure in wg 0 9 1 0 1 1 1 2 1 4 1 6 1 8 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 1200 993 0 65 1028 0 69 1056 0 72 1083 0 74 1134 0 80 1185 0 88 1331 0 99 1300 1021 0 74 1058...

Page 34: ...0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 1500 771 0 37 828 0 44 935 0 58 1027 0 73 1107 0 88 1185 1 04 1257 1 20 1330 1 38 1411 1 59 1600...

Page 35: ...7 2 35 1710 2 54 2400 1174 1 37 1237 1 41 1292 1 55 1392 1 81 1460 1 90 1532 2 14 1584 2 28 1671 2 55 1756 2 70 2500 1201 1 48 1272 1 53 1335 1 71 1427 1 94 1518 2 16 1575 2 35 1633 2 53 1698 2 72 260...

Page 36: ...0 712 1 59 774 1 90 830 2 23 881 2 56 930 2 90 976 3 25 3600 729 1 71 790 2 03 845 2 37 895 2 71 943 3 05 988 3 41 3700 745 1 84 805 2 17 860 2 52 909 2 87 956 3 22 3750 754 1 91 813 2 24 868 2 59 917...

Page 37: ...6 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 2550 559 0 72 634 0 97 700 1 21 759 1 48 814 1 74 864 2 01 915 2 34 968 2 81 2600 567 0 75 641 1 00 706 1 25 764 1 52 819 1 79 869 2 0...

Page 38: ...0 830 2 23 881 2 56 930 2 90 3600 729 1 71 790 2 03 845 2 37 895 2 71 943 3 05 3700 745 1 84 805 2 17 860 2 52 909 2 87 956 3 22 3750 754 1 91 813 2 24 868 2 59 917 2 95 963 3 30 3800 762 1 98 821 2 3...

Page 39: ...6 820 1 80 875 2 01 928 2 29 979 2 55 1029 2 80 1079 3 07 1128 3 34 1173 3 60 1214 3 83 4000 777 1 67 836 1 92 889 2 14 941 2 40 991 2 68 1040 2 94 1089 3 22 1137 3 49 1183 3 76 1225 4 00 4100 793 1 7...

Page 40: ...58 48HJ004 3 TONS STANDARD MOTOR BELT DRIVE cont Airflow Cfm External Static Pressure in wg 0 7 0 8 0 9 1 0 1 1 1 2 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 900 924 0 32 953 0 35 989 0 38 1028...

Page 41: ...Pressure in wg 0 9 1 0 1 1 1 2 1 4 1 6 1 8 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 1200 987 0 64 1030 0 70 1068 0 79 1106 0 87 1134 0 98 1189 1 12 1245 1 21 1300 1006 0 71 1044 0 77 10...

Page 42: ...2 1 4 1 6 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Bhp Rpm Bhp Rpm Bhp Rpm 1500 741 0 38 798 0 43 895 0 54 990 0 67 1073 0 80 1154 0 95 1218 1 12 1295 1 36 1360 1 40 1600 783 0 45 838 0 51 933...

Page 43: ...1604 2 42 2500 1183 1 43 1201 1 50 1284 1 65 1338 1 75 1402 1 99 1469 2 04 1524 2 24 1585 2 42 1638 2 60 2600 1210 1 58 1243 1 67 1312 1 76 1366 1 96 1435 2 10 1494 2 19 1552 2 40 1616 2 63 1671 2 80...

Page 44: ...942 2 89 989 3 26 1034 3 63 3400 684 1 41 747 1 70 807 2 04 857 2 35 882 2 51 907 2 66 954 3 02 1000 3 40 1044 3 79 3500 701 1 53 762 1 82 821 2 16 871 2 48 895 2 64 919 2 80 966 3 15 1011 3 55 1054...

Page 45: ...057 4 18 1098 4 60 4000 783 2 18 838 2 50 891 2 86 942 3 26 964 3 45 986 3 63 1028 3 99 1070 4 36 1110 4 78 4100 800 2 34 854 2 66 905 3 02 956 3 43 978 3 62 1000 3 81 1042 4 18 1082 4 56 1122 4 97 42...

Page 46: ...1102 3 20 1143 3 42 1174 3 59 4000 720 1 47 786 1 71 847 1 97 902 2 19 957 2 50 1011 2 79 1064 3 07 1112 3 34 1155 3 59 1190 3 80 4100 734 1 56 800 1 82 860 2 09 914 2 31 967 2 60 1021 2 91 1072 3 20...

Page 47: ...70 950 925 905 880 860 014 1260 1220 1185 1155 1130 1100 1075 1045 1015 990 960 930 900 HIGH STATIC MOTOR UNIT 48HJ MOTOR PULLEY TURNS OPEN 0 1 2 1 11 2 2 21 2 3 31 2 4 41 2 5 51 2 6 004 1455 1423 139...

Page 48: ...ee 2 90 2615 208 230 7 9 460 3 6 575 3 6 007 Three 2 90 2615 208 230 6 4 460 3 6 575 3 6 008 009 Three 4 20 3775 208 230 12 6 460 5 7 575 5 7 012 Three 5 25 4400 208 230 15 0 460 7 4 575 7 4 UNIT 48HJ...

Page 49: ...3 18 009 81 2 10 15 22 012 10 08 13 18 014 121 2 11 18 26 FIOP Factory Installed Option UNIT SIZE 48HJ EFFICIENCY 004 005 75 006 74 84 007 84 008 009 80 012 85 014 87 watts bhp 746 motor efficiency 0...

Page 50: ...7 000 35 44 35 43 8 000 36 44 36 44 9 000 37 45 37 44 10 000 38 46 38 45 11 000 39 47 39 45 12 000 40 47 40 46 13 000 41 48 41 47 14 000 42 48 42 47 Performance data cont FLOW cfm 0 0 1 0 2 0 3 0 4 0...

Page 51: ...45 45 216 216 208 230 3 60 187 254 17 3 123 0 1 5 5 8 57 28 9 28 9 35 35 28 28 168 168 460 3 60 414 508 9 0 62 0 0 8 2 6 30 14 7 20 14 84 575 3 60 518 632 7 1 50 0 0 8 2 6 30 11 6 15 11 67 48HJD HJE H...

Page 52: ...50 221 221 208 230 3 60 187 254 17 3 123 0 1 5 5 8 57 34 9 34 9 40 40 34 34 173 173 460 3 60 414 508 9 0 62 0 0 8 2 6 30 17 4 20 17 86 575 3 60 518 632 7 1 50 0 0 8 2 6 30 13 8 20 13 69 48HJD HJE HJF...

Page 53: ...2 6 0 3 9 7 15 9 57 48HJD HJE HJF006 208 230 3 60 187 254 17 3 123 0 1 5 7 5 0 6 30 6 35 30 187 460 3 60 414 508 9 0 62 0 0 8 3 4 0 3 15 5 20 15 94 575 3 60 518 632 7 1 50 0 0 8 3 4 0 3 12 2 15 12 76...

Page 54: ...8 15 11 59 48HJD HJE HJF006 208 230 3 60 187 254 17 3 123 0 1 5 7 5 0 6 36 6 40 36 192 460 3 60 414 508 9 0 62 0 0 8 3 4 0 3 18 2 20 18 96 575 3 60 518 632 7 1 50 0 0 8 3 4 0 3 14 4 20 14 77 48HJE HJF...

Page 55: ...55 Typical piping and wiring UNITS WITH MOISTUREMISER OPTION...

Page 56: ...56 Typical piping and wiring cont VERTICAL DISCHARGE HORIZONTAL DISCHARGE...

Page 57: ...osition will be determined by the supply air temperature When the first stage of cooling is satisfied the IFM shuts off after a 30 second delay The damper then moves to fully closed position Cooling u...

Page 58: ...2 and 24 vac terminals and between the T1 and 24 vac terminals This causes the economizer damper to remain in an intermediate open position If the supply air temperature falls below 52 F a switch on t...

Page 59: ...is desired a field installed wall mounted humidistat is required If the MoistureMiser humidistat is installed and calls for the MoistureMiser subcooler coil to operate the humidistat internal switch...

Page 60: ...t food chains schools and hotels a TEMP System is a cost effective way to maintain comfortable building envi ronments See Typical TEMP System on page 62 Variable Volume Variable Temperature VVT system...

Page 61: ...S LPS Low Pressure Switch Subcooler Only TRAN Transformer Factory Wiring Accessory or Optional Wiring TYPICAL MOISTUREMISER DEHUMIDIFICATION PACKAGE HUMIDISTAT WIRING 48HJ008 014 208 230 V UNIT SHOWN...

Page 62: ...MONITOR THERMOSTAT WITH TIMECLOCK ZONE DAMPER ZONE DAMPER ZONE DAMPER ZONE CONTROLLER ZONE CONTROLLER ZONE CONTROLLER ROOFTOP UNIT WITH APOLLO COMMUNICATING CONTROL RETURN SUPPLY BYPASS DAMPER MIXED...

Page 63: ...EGEND C Contactor NOTE Refer to Product Support Bulletin No 93 005 or contact your local Carrier representative for shielded wire applications when wiring the thermostat to the Apollo control and for...

Page 64: ...08 014 LEGEND C Contactor CHAS Ground CLO Compressor Lockout COM Common DX Direct Expansion ECON Economizer GND Ground HT Heat IAQ Indoor Air Quality NC Normally Closed NO Normally Open OAT Outdoor Ai...

Page 65: ...and the notes following each Fan Performance table can be utilized with extreme confidence Using Carrier motors to the values listed in the Physical Data Fan Performance and Evaporator Fan Motor Data...

Page 66: ...the unit latent capacity is increased The refrigerant cycle follows the same path from point no 1 to point no 2 as the stan dard refrigerant cycle without a subcooler see the pressure enthalpy curve...

Page 67: ...o low suction pres sure conditions The MoistureMiser dehumidification package contains a low pressure switch that deactivates the MoistureMiser under low suction pressure condi tions without deactivat...

Page 68: ...68 Application data cont PRESSURE ENTHALPY CURVE NOTE Numbers 1 through 4 indicate point numbers referred to in MoistureMiser Dehumidification Package Design Effects section...

Page 69: ...CHROMETRIC CHART 48HJ006 SHOWN Point 1 Entering Air F 80 db 67 wb Point 2 Leaving Air F 58 9 db 56 4 wb Without Subcooler Point 3 Leaving Air F 63 0 db 56 8 wb With Subcooler LEGEND db Dry Bulb wb Wet...

Page 70: ...pical wiring schematic 008 014 460 3 60 shown CIRCUIT BREAKER VOLTS MFG PT NO MUST TRIP AMPS CB 24 V POTTER BRUMFIELD 3 2 W2BX 1024 3 2 CB1 014 Std 460 3 60 Heinemann Airpax 8 5 CF3 Z228 41 219 3 2600...

Page 71: ...t Ground ER Economizer Relay FPT Freeze Protection Thermostat FS Flame Sensor FSS Filter Status Switch FU Fuse GV Gas Valve GVR Gas Valve Relay HPS High Pressure Switch HS Hall Effect Sensor HV High V...

Page 72: ...interior surfaces on all panels 2 Evaporator fan cabinet interior shall be insu lated with a minimum 1 2 in thick flexible fiber glass insulation coated on the air side Aluminum foil faced fiberglass...

Page 73: ...tch 3 Freeze protection thermostat evapora tor coil 4 High pressure switch The lockout protection shall be easily discon nected at the control board if necessary b Heating section shall be provided wi...

Page 74: ...s d Equipped with barometric relief damper 7 Solid State Enthalpy Control Capable of sensing outdoor air enthalpy con tent temperature and humidity and control ling economizer cut in point to have min...

Page 75: ...shall contain all the necessary hard ware and instructions to convert a standard nat ural gas unit for use with liquid propane 25 NOx Reduction Kit Package shall contain all necessary hardware and ins...

Page 76: ...t any time specifications or designs without notice and without incurring obligations New Pg 76 Catalog No 524 894 Printed in U S A PC 111 Form 48HJ 11PD Replaces 48HJ 10PD Book 1 4 Tab 1a 6a Carrier...

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