Carrier 50HJ008-014 Installation, Start-Up And Service Instructions Manual Download Page 6

UNIT
50HJ

STD UNIT

WEIGHT

DURABLADE

ECONOMIZER

WEIGHT

PARABLADE

ECONOMIZER

WEIGHT

CORNER

WEIGHT

(A)

CORNER

WEIGHT

(B)

CORNER

WEIGHT

(C)

CORNER

WEIGHT

(D)

‘‘H’’

‘‘J’’

‘‘K’’

lb

kg

lb

kg

lb

kg

lb

kg

lb

kg

lb

kg

lb

kg

ft-in.

mm

ft-in.

mm

ft-in.

mm

008

755

342

44

20

62

28

164

74

140

64

208

94

243

110

2

8

-0

7

8

9

632

3

8

-5

5

16

9

1050

2

8

-9

11

16

9

856

009

760

345

44

20

62

28

165

75

141

64

209

94

245

111

1

8

-2

7

8

9

378

3

8

-5

5

16

9

1050

2

8

-9

11

16

9

856

012

915

415

44

20

62

28

199

90

170

77

252

114

294

134

2

8

-10

7

8

9

885

4

8

-1

5

16

9

1253

3

8

-0

3

8

9

924

014

930

422

44

20

62

28

202

92

172

78

256

116

300

136

1

8

-2

7

8

9

378

4

8

-1

5

16

9

1253

3

8

-0

3

8

9

924

CONNECTION SIZES

A

1

3

8

9

Dia. [35] Field Power Supply Hole

B

2

1

2

9

Dia. [64] Power Supply Knockout

C

1

3

4

9

Dia. [44] Charging Port Hole

D

7

8

9

Dia. [22] Field Control Wiring Hole

E

3

4

9

—14 NPT Condensate Drain

F

2

9

Dia. [51] Power Supply Knockout

NOTES:
1. Dimensions in [

]

are in millimeters.

2.

Center of gravity.

3.

Direction of airflow.

4. Ductwork to be attached to accessory roof curb only.
5. Minimum clearance (local codes or jurisdiction may prevail):

a. Bottom to combustible surfaces (when not using curb) 0 in. on horizontal

discharge units with electric heat 1 in. clearance to ductwork for 1 ft.

b. Condenser coil, for proper airflow, 36 in. one side, 12 in. the other. The

side getting the greater clearance is optional.

c. Overhead, 60 in. to assure proper condenser fan operation.
d. Between units, control box side, 42 in. per NEC (National Electrical Code).
e. Between unit and ungrounded surfaces, control box side, 36 in. per NEC.

f. Between unit and block or concrete walls and other grounded surfaces,

control box side, 42 in. per NEC.

g. Horizontal supply and return end, 0 inches.

6. With the exception of the clearance for the condenser coil as stated in Note

5b, a removable fence or barricade requires no clearance.

7. Units may be installed on combustible floors made from wood or Class A,

B, or C roof covering material.

8. The vertical center of gravity is 1

8

-7

1

2

9

[495] for 008 and 009, 2

8

-0

9

[610] for

012 and 014 up from the bottom of the base rail.

Fig. 6 — Base Unit Dimensions

6

Summary of Contents for 50HJ008-014

Page 1: ...curb in accordance with instructions shipped with curb See Fig 1 Install insulation cant strips roofing felt and counter flash ing as shown Ductwork must be attached to curb If electric or control pow...

Page 2: ...ttom UNIT SIZE 50HJ A ROOF CURB ACCESSORY 008 014 18 29 356 CRRFCURB003A00 28 09 610 CRRFCURB004A00 NOTES 1 Roof curb accessory is shipped unassembled 2 Insulated panels 3 Dimensions in are in millime...

Page 3: ...of run Do not use a pipe size smaller than the unit connection Step 4 Rig and Place Unit Inspect unit for trans portation damage File any claim with transportation agency Keep unit upright and do not...

Page 4: ...ng to prevent rigging straps from damaging unit 3 Unit weights do not include economizer See Table 1 for econo mizer weights All panels must be in place when rigging 50HJ MAX WEIGHT A B C lb kg in mm...

Page 5: ...20 Motor Frame 56 56 56 56 Fan Rpm Range Std 840 1085 840 1085 860 1080 900 1260 Alt 860 1080 Motor Bearing Type Ball Ball Ball Ball Maximum Fan Rpm 2100 2100 2100 2100 Motor Pulley Pitch Diameter A...

Page 6: ...ow 4 Ductwork to be attached to accessory roof curb only 5 Minimum clearance local codes or jurisdiction may prevail a Bottom to combustible surfaces when not using curb 0 in on horizontal discharge u...

Page 7: ...ing units provide a disconnect per the NEC All field wiring must comply with the NEC and local re quirements In Canada electrical connections must be made in accordance with CSA Canadian Standards Ass...

Page 8: ...0 21 7 25 0 33 3 38 5 66 6 77 0 88 4 102 0 104 4 120 3 55 9 55 9 55 9 55 9 55 9 61 4 96 6 109 5 123 7 140 8 143 5 133 5 60 60 60 60 70 70 100 110 125 150 150 150 59 59 59 59 59 59 89 101 114 129 132...

Page 9: ...0 21 7 25 0 33 3 38 5 66 6 77 0 88 4 102 0 104 4 120 3 61 9 61 9 61 9 61 9 61 9 66 4 101 5 114 5 128 7 145 8 148 5 138 5 70 70 70 70 70 70 110 125 150 150 150 150 64 64 64 64 64 64 94 106 119 135 138...

Page 10: ...n Table 3 FLA Full Load Amps HACR Heating Air Conditioning and Refrigeration IFM Indoor Evaporator Fan Motor LRA Locked Rotor Amps MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection NEC Nati...

Page 11: ...with the air hood package If unit is to be used for vertical dis charge application discard this plate Assembly 1 Determine if ventilation air is required in building If so determine the minimum amoun...

Page 12: ...lenoid Valve S LPS Low Pressure Switch Subcooler only TRAN Transformer Factory Wiring Accessory or Optional Wiring Fig 11 Typical MoistureMiser Dehumidification Package Humidistat Wiring 208 230 V Uni...

Page 13: ...s 9 Remove tape from outdoor air thermostat OAT Fas ten OAT to inside of hood using screws and speed clips provided See Fig 21 Make sure OAT terminals are po sitioned up 10 Replace outdoor air opening...

Page 14: ...Put aside screen retainer and retainer screw for later as sembly Do not attach hood to unit at this time 4 On 012 and 014 units install vertical discharge block off plate over duct openings See Fig 1...

Page 15: ...N 3 1 T P P1 T1 4 2 5 S S O D C TR B REV B 1 9 8 8 1 8 A H U M I D I T Y 90 70 60 30 10 D C B A 60 65 70 75 55 50 85 80 DAMPER DAMPER CLOSED OPEN OUTDOOR TEMP F REV 97 3672 CW SETPOINTS CCW CONTACTS S...

Page 16: ...s provided and in stall bottom stop 11 Slide outdoor air inlet screens into screen track on hood side plate While holding screens in place fasten screen retainer to hood using screws provided See Fig...

Page 17: ...pulley hub and tighten setscrew See Table 1 for speed change for each full turn of pulley flange To align fan and motor pulleys 1 Loosen fan pulley setscrews 2 Slide fan pulley along fan shaft 3 Make...

Page 18: ...12 1 88 862 2 15 911 2 46 3100 646 1 15 709 1 39 772 1 70 825 1 99 875 2 28 923 2 58 3200 662 1 25 724 1 50 785 1 80 840 2 11 887 2 41 934 2 71 3300 679 1 35 740 1 61 798 1 91 854 2 24 900 2 54 946 2...

Page 19: ...813 2 39 867 2 74 915 3 06 960 3 40 4200 830 2 55 883 2 91 931 3 24 4250 839 2 63 892 3 00 939 3 34 AIRFLOW Cfm EXTERNAL STATIC PRESSURE in wg 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 2550 908...

Page 20: ...3000 886 1 73 943 1 88 988 1 91 995 1 95 3100 892 1 78 947 2 00 995 2 05 1008 2 07 3200 899 1 85 951 2 06 1000 2 17 1021 2 20 3300 907 1 93 959 2 10 1004 2 33 1036 2 36 3400 915 2 01 966 2 17 1009 2...

Page 21: ...2 3800 959 2 38 1001 2 58 1040 2 78 1075 2 96 3900 969 2 50 1010 2 70 1049 2 91 1085 3 11 4000 979 2 62 1020 2 83 1059 3 04 1095 3 25 4100 989 2 74 1029 2 96 1068 3 18 1105 3 39 4200 1000 2 86 1039 3...

Page 22: ...2300 816 1 65 859 1 94 888 2 24 903 2 55 911 2 85 2400 824 1 72 872 2 01 909 2 32 931 2 64 935 2 96 2500 832 1 79 882 2 09 925 2 40 955 2 72 972 3 06 2550 836 1 83 887 2 13 931 2 45 964 2 77 986 3 11...

Page 23: ...SSURE in wg 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 2550 836 1 83 887 2 13 931 2 45 964 2 77 986 3 11 2660 839 1 87 891 2 17 936 2 49 973 2 82 999 3 16 2700 846 1 95 898 2 26 946 2...

Page 24: ...7 2 10 988 2 05 995 2 20 3400 853 1 71 899 1 93 951 2 17 995 2 17 1008 2 32 3500 862 1 78 907 2 01 959 2 24 1000 2 33 1021 2 47 3600 871 1 86 915 2 09 965 2 32 1005 2 46 1036 2 59 3700 879 1 95 927 2...

Page 25: ...3 03 1058 3 29 1100 3 53 4400 945 2 68 988 2 89 1028 3 14 1066 3 41 1106 3 67 4500 955 2 82 996 3 02 1037 3 25 1074 3 54 1113 3 81 4600 967 2 96 1005 3 16 1046 3 38 1084 3 66 1121 3 95 4700 980 3 11 1...

Page 26: ...es a re frigerant leak Leak test all refrigerant tubing connec tions using electronic leak detector halide torch or liquid soap solution c Inspect all field and factory wiring connections Be sure that...

Page 27: ...emperature is below the OAT set ting and the thermostat calls for Y1 and G the economizer damper moves to the minimum position when the indoor evaporator fan starts The first stage of cooling is provi...

Page 28: ...witch has closed and a new call for cooling exists The crankcase heaters on the scroll compressors provide additional protec tion for the compressors due to the additional refrigerant charge in the su...

Page 29: ...Fig 33 MoistureMiser Option Operation 29...

Page 30: ...ting dur ing charging procedure NO CHARGE Use standard evacuating techniques After evacuating system weigh in the specified amount of refrigerant refer to Table 1 LOW CHARGE COOLING Use Cooling Chargi...

Page 31: ...harts Fig 38 41 for units with MoistureMiser option and DO NOT use Fig 42 45 for standard units TO USE COOLING CHARGING CHARTS STANDARD UNITS Take the outdoor ambient temperature and read the suction...

Page 32: ...Fig 39 Cooling Charging Chart Standard 50HJ009 Fig 40 Cooling Charging Charts Standard 50HJ012 32...

Page 33: ...harging Charts Standard 50HJ014 Fig 42 Cooling Charging Chart 50HJ008 with Optional MoistureMiser Dehumidification Package Fig 43 Cooling Charging Chart 50HJ009 with Optional MoistureMiser Dehumidific...

Page 34: ...quid line solenoid valve will not operate 1 Solenoid coil defective replace 2 Solenoid valve stuck open replace Subcooler will not deenergize Liquid line solenoid valve will not open Valve is stuck cl...

Page 35: ...Locate restriction and remove Compressor s operates continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size Thermostat set too low Reset thermostat Lo...

Page 36: ...nomizer control board wiring are correct check to ensure that the 24 vac terminal of the SAT has 24 vac white wire If OAT EC and control board are functioning and wired properly and no 24 vac exists c...

Page 37: ...hese actions do not occur replace economizer control module 4 Disconnect 1 2 Kohm checkout resistor before resuming operation Damper does not close No power to economizer 1 Disconnect power at TR and...

Page 38: ...programs include a video cassette and or slides and a companion booklet Use these for self teaching or to conduct full training sessions For a free Service Training Material Catalog STM call 1 800 96...

Page 39: ......

Page 40: ...LTAGE L1 L2 L2 L3 L3 L1 CIRCUIT 1 COMPRESSOR AMPS L1 L2 L3 CIRCUIT 2 COMPRESSOR AMPS L1 L2 L3 EVAPORATOR FAN AMPS L1 L2 L3 TEMPERATURES OUTDOOR AIR TEMPERATURE DB RETURN AIR TEMPERATURE DB WB COOLING...

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