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Carrier 50HJ008-014, Инструкция по установке, запуску и обслуживанию, Страница: 26 / 40

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Table 14 — Accessory/FIOP Economizer and

Electric Heaters Static Pressure Drop (in. wg)

COMPO-

NENT

CFM

2200 2500 3000 3500 4000 4500 5000 5500 6000

1 Heater*

Module

.02

.03

.05

.065

.08

.10

.12

.14

.155

2 Heater*

Modules

.03

.05

.07

.09

.12

.14

.16

.19

.21

Durablade
Economizer

.02

.02

.03

.04

.05

.06

.07

.08

.09

Parablade
Economizer

.21

.25

.35

.49

.61

.77

—

—

—

FIOP — Factory-Installed Option
*Refer to unit price pages to determine if 1 or 2 heater modules are

required.

Table 15 — FIOP MoistureMiser Dehumidification

Package Static Pressure Drop (in. wg)

UNIT SIZE

50HJ

UNIT

NOMINAL

TONS

CFM PER TON

300

400

500

008

7

1

⁄

2

.08

.13

.18

009

8

1

⁄

2

.10

.15

.22

012

10

.08

.13

.18

014

12

1

⁄

2

.11

.18

.26

PRE-START-UP

Failure to observe the following warnings could result
in serious personal injury:
1. Follow recognized safety practices and wear protec-

tive goggles when checking or servicing refrigerant
system.

2. Do not operate compressor or provide any electric

power to unit unless compressor terminal cover is in
place and secured.

3. Do not remove compressor terminal cover until all

electrical sources are disconnected.

4. Relieve all pressure from system before touching or

disturbing anything inside terminal box if refrigerant
leak is suspected around compressor terminals. Use
accepted methods to recover refrigerant.

5. Never attempt to repair soldered connection while re-

frigerant system is under pressure.

6. Do not use torch to remove any component. System

contains oil and refrigerant under pressure. To re-
move a component, wear protective goggles and pro-
ceed as follows:
a. Shut off electrical power to unit.
b. Relieve all pressure from system using both high-

and low-pressure ports. Use accepted methods to
recover refrigerant.

c. Cut component connection tubing with tubing cut-

ter and remove component from unit.

d. Carefully unsweat remaining tubing stubs when nec-

essary. Oil can ignite when exposed to torch flame.

Proceed as follows to inspect and prepare the unit for ini-

tial start-up:

1. Remove all access panels.

2. Read and follow instructions on all WARNING, CAU-

TION, and INFORMATION labels attached to or shipped
with unit.

3. Make the following inspections:

a. Inspect for shipping and handling damages such as bro-

ken lines, loose parts, or disconnected wires.

b. Inspect for oil at all refrigerant tubing connections and

on unit base. Detecting oil generally indicates 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 connections are completed and tight.

d. Inspect coil fins. If damaged during shipping and han-

dling, carefully straighten fins with a fin comb.

4. Verify the following conditions:

a. Make sure that condenser-fan blades are correctly po-

sitioned in fan orifice. Refer to Condenser-Fan Ad-
justment section on page 30 for more details.

b. Make sure that air filters are in place.
c. Make sure that condensate drain trap is filled with wa-

ter to ensure proper drainage.

d. Make sure that all tools and miscellaneous loose parts

have been removed.

e. Make sure that the start-up checklist has been per-

formed and filled out.

START-UP

Unit Preparation —

Make sure that unit has been in-

stalled in accordance with these installation instructions and
applicable codes.

Return-Air Filters —

Make sure correct filters are in-

stalled in unit (see Table 1). Do not operate unit without return-
air filters.

Outdoor-Air Inlet Screens —

Outdoor-air inlet

screens must be in place before operating unit.

Compressor Mounting —

Compressors are inter-

nally spring mounted. Do not loosen or remove compressor
holddown bolts.

Internal Wiring —

Check all electrical connections in

unit control boxes; tighten as required.

Refrigerant Service Ports —

Each refrigerant sys-

tem has 4 Schrader-type service gage ports: one on the
suction line, one on the liquid line, and 2 on the compressor
discharge line. Be sure that caps on the ports are tight.

Compressor Rotation —

On 3-phase units, it is im-

portant to be certain the scroll compressor is rotating in the
proper direction. To determine whether or not compressor is
rotating in the proper direction:
1. Connect service gages to suction and discharge pressure

fittings.

2. Energize the compressor.
3. The suction pressure should drop and the discharge pres-

sure should rise, as is normal on any start-up.

If the suction pressure does not drop and the discharge

pressure does not rise to normal levels:
1. Note that the evaporator fan is probably also rotating in

the wrong direction.

2. Turn off power to the unit.
3. Reverse any two of the unit power leads.
4. Turn on power to the compressor.

The suction and discharge pressure levels should now move

to their normal start-up levels.
NOTE: When the compressor is rotating in the wrong di-
rection, the unit makes an elevated level of noise and does
not provide heating or cooling.

26

Содержание 50HJ008-014

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 39: ......

Страница 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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