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Carrier 50HJ008, Инструкция по установке, запуску и обслуживанию

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Carrier 50HJ008 Скачать руководство пользователя страница 52

52

TROUBLESHOOTING

Unit Troubleshooting —

Refer to Tables 31-33.

Table 31 — Humidi-MiZer™ Adaptive Dehumidification System Subcooling Mode Service Analysis

Table 32 — Humidi-MiZer Adaptive Dehumidification System Hot Gas Reheat Mode Service Analysis

PROBLEM

CAUSE

REMEDY

Subcooling Mode (Liquid Reheat)
Will Not Energize.

No power to control transformer from
evaporator-fan motor.

Check power source and evaporator-fan relay. Ensure all
wire connections are tight.

No power from control transformer to liquid line
solenoid valve.

1. Fuse open; check fuse. Ensure continuity of wiring.
2. Low-pressure switch open. Cycle unit off and allow low-

pressure switch to reset. Replace switch if it will not
close.

3. Transformer bad; check transformer.

Liquid line solenoid valve will not operate.

1. Solenoid coil defective; replace.
2. Solenoid valve stuck open; replace.

Liquid line solenoid valve will not open.

Valve is stuck closed; replace valve.

Low System Capacity.

Low refrigerant charge or frosted evaporator coil.

1. Check charge amount. Charge per Fig. 60-62.
2. Evaporator coil frosted; check and replace low-

pressure switch if necessary.

Loss of Compressor Superheat
Conditions with Subcooling/Reheat
Dehumidification Coil Energized.

Thermostatic expansion valve (TXV).

1. Check TXV bulb mounting, and secure tightly to suc-

tion line.

2. Replace TXV if stuck open or closed.

PROBLEM

CAUSE

REMEDY

Reheat Mode Will Not Energize.

No power to control transformer from
evaporator-fan motor.

Check power source and evaporator-fan relay. Ensure all
wire connections are tight.

No power from control transformer to hot gas
line solenoid valve.

1. Fuse open; check fuse. Ensure continuity of wiring.
2. Low-pressure switch open. Cycle unit off and allow low-

pressure switch to reset. Replace switch if it will not
close.

3. Transformer bad; check transformer.

Hot gas line solenoid valve will not operate.

1. Solenoid coil defective; replace.
2. Solenoid valve stuck closed; replace.

Low refrigerant charge or frosted evaporator coil.

1. Check charge amount. Charge per Fig. 60-62.
2. Evaporator coil frosted; check and replace low-

pressure switch if necessary.

Loss of Compressor Superheat
Conditions with Subcooling/Reheat
Dehumidification Coil Energized.

Thermostatic expansion valve (TXV).

1. Check TXV bulb mounting, and secure tightly to suc-

tion line.

2. Replace TXV if stuck open or closed.

Excessive Superheat.

Liquid line solenoid valve will not operate.

Valve is stuck; replace valve.

Hot gas line solenoid valve will not close.

Valve is stuck; replace valve.

Содержание 50HJ008

Страница 1: ...pped in the vertical configuration To convert to horizontal configuration remove side duct opening covers Us ing the same screws install covers on vertical duct openings with the insulation side down...

Страница 2: ...wg without economizer Step 3 Install Condensate Drain Line and External Trap Condensate drain connections are locat ed at the bottom and end of the unit Unit discharge connec tions do not determine th...

Страница 3: ...mbled 2 Insulated panels 1 in thick polyurethane foam 13 4 lb density 3 Dimensions in are in millimeters 4 Roof curb 16 gage steel 5 Attach ductwork to curb flanges of duct rest on curb 6 Service clea...

Страница 4: ...contaminated air Although unit is weatherproof guard against water from higher level runoff and overhangs After unit is in position remove polyethylene shipping wrapper and rigging skid NOTES 1 Dimens...

Страница 5: ...5 Fig 7 Base Unit Dimensions...

Страница 6: ...15 15 x 15 Nominal Cfm Standard 3000 3400 4000 5000 Maximum Continuous Bhp Standard 2 90 2 90 3 70 5 25 High Static 4 20 4 20 5 25 Motor Frame 56 56 56 56 Fan Rpm Range Standard 840 1085 840 1085 860...

Страница 7: ...ust be within range indicated on unit nameplate see Table 2 On 3 phase units voltages between phases must be balanced with in 2 and the current within 10 Use the formula shown in Table 2 Note 2 on pag...

Страница 8: ...71 4 80 66 136 575 3 60 STD NO 518 632 4 8 34 0 4 8 34 0 2 0 7 3 4 14 6 20 15 94 17 0 16 4 23 8 20 22 95 34 0 32 7 44 3 45 41 95 YES 518 632 4 8 34 0 4 8 34 0 2 0 7 3 4 16 8 20 17 96 17 0 16 4 26 5 2...

Страница 9: ...50 2 68 7 70 63 171 50 0 60 1 66 1 80 75 171 YES 414 508 8 3 62 5 8 3 62 5 2 0 7 4 8 27 6 20 29 172 13 9 16 7 30 3 35 29 173 16 5 19 8 33 5 35 31 173 33 0 39 7 58 3 60 54 173 41 7 50 2 71 4 80 66 173...

Страница 10: ...and Refrigeration IFM Indoor Evaporator Fan Motor LRA Locked Rotor Amps MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection NEC National Electrical Code OFM Outdoor Condenser Fan Motor RLA R...

Страница 11: ...nit see connection D in Connection Sizes table in Fig 7 4 Feed wire through the raceway built into the corner post to the 24 v barrier located on the left side of the control box See Fig 10 The racewa...

Страница 12: ...ermidistat cable through the hole provided in unit corner post 2 Feed the wires through the raceway built into the corner post to the 24 v barrier located on the left side of the con trol box See Fig...

Страница 13: ...h LSV Liquid Solenoid Valve LTLO Low Temperature Lockout TB Terminal Block Fig 13 Typical Humidi MiZer Adaptive Dehumidification System Humidistat Wiring 208 230 v Unit Shown TRAN Transformer Field Sp...

Страница 14: ...he damper blade Slide blade vertically until it is in the appropriate position determined by Fig 18 Tighten screws 9 Remove and save screws currently on sides of hood In sert screen Secure screen to h...

Страница 15: ...des Drill or punch a 1 2 in hole in the flange or duct Use two field supplied self drilling screws to secure the sensor probe in a horizontal orientation NOTE The sensor must be mounted in the dischar...

Страница 16: ...Opens at 67 F closes at 52 F not adjustable Mixed Air Sensor HH97AZ001 PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT and Outdoor Air Temperature Sensor HH79NZ017 Compressor Lo...

Страница 17: ...terminal 2 on enthalpy sensor NOTE If installing in a Carrier rooftop use the two gray wires provided from the control section to the economizer to connect PremierLink controller to terminals 2 and 3...

Страница 18: ...t be used and must be discarded Save the aluminum filter for use in the power exhaust hood assembly BRACKET C7400A1004 Fig 23 Differential Enthalpy Control Sensor and Mounting Plate 33AMKITENT006 HH57...

Страница 19: ...used to measure the outdoor air temperature The outdoor air temperature is used to determine when the EconoMi er IV can be used for free cooling The sensor is factory installed on the EconoMi er IV i...

Страница 20: ...ransformer grounded 3 For field installed remote minimum position POT remove black wire jumper between P and P1 and set control minimum position POT to the minimum position Fig 31 EconoMi er IV Wiring...

Страница 21: ...The scale on the potentiometer is A B C and D See Fig 38 for the corresponding temperature changeover values Differential Dry Bulb Control For differential dry bulb control the standard outdoor dry bu...

Страница 22: ...r Adjust the DCV potentiome ters to correspond to the DCV voltage output of the indoor air quality sensor at the user determined set point See Fig 42 If a separate field supplied transformer is used t...

Страница 23: ...75 24 80 27 80 27 85 29 90 32 95 35 100 38 APPROXIMATE DRY BULB TEMPERATURE F C A A B B C C D D R E L A T I V E H U M I D I T Y HIGH LIMIT CURVE TR1 24 Vac COM TR 24 Vac HOT 1 2 3 4 5 EF EF1 _ P1 T1...

Страница 24: ...tional anticipatory strategy should be taken with the following conditions a zone with a large area varied occu pancy and equipment that cannot exceed the required ventila tion rate at design conditio...

Страница 25: ...ulley settings or standard and high static motors Tables 12 and 13 show evaporator fan motor data See Tables 14 and 15 and Fig 43 for accessory and option static pressure drops Refer to Tables 16 29 t...

Страница 26: ...014 Slide motor mounting plate downward to tighten belt tension Secure motor mounting plate nuts See Fig 45 Use 1 2 in deflection with 10 lb of force 3 Adjust bolt and nut on mounting plate to secure...

Страница 27: ...not be affected UNIT 50HJ MOTOR PULLEY TURNS OPEN 0 1 2 1 11 2 2 21 2 3 31 2 4 41 2 5 51 2 6 008 009 1085 1060 1035 1010 985 960 935 910 890 865 840 012 1080 1060 1035 1015 990 970 950 925 905 880 860...

Страница 28: ...result in nuisance tripping or premature motor failure Unit warranty will not be affected For additional information on motor performance refer to Evaporator Fan Motor Data Tables 12 and 13 2 Values i...

Страница 29: ...15 2004 3100 646 1 15 1071 711 1 41 1313 770 1 68 1568 824 1 97 1835 875 2 27 2114 3200 663 1 25 1162 726 1 51 1411 784 1 79 1672 837 2 09 1944 888 2 39 2229 3300 679 1 35 1259 741 1 62 1514 798 1 91...

Страница 30: ...1 86 1737 827 2 16 2017 878 2 48 2308 926 2 80 2610 3600 729 1 70 1583 787 1 99 1857 841 2 30 2144 892 2 62 2441 939 2 95 2749 3700 746 1 83 1703 803 2 13 1985 856 2 44 2277 906 2 77 2580 953 3 10 289...

Страница 31: ...00 697 1 37 1281 753 1 58 1474 804 1 79 1666 852 1 99 1857 897 2 20 2048 4100 712 1 47 1370 766 1 68 1567 817 1 89 1764 864 2 10 1960 909 2 31 2155 4200 726 1 57 1462 780 1 79 1665 830 2 00 1866 876 2...

Страница 32: ...67 817 1 89 1764 864 2 10 1960 909 2 31 2155 4200 726 1 57 1462 780 1 79 1665 830 2 00 1866 876 2 22 2067 920 2 43 2268 4300 741 1 67 1559 794 1 89 1767 843 2 12 1973 889 2 34 2179 932 2 56 2384 AIRFL...

Страница 33: ...9 882 2 49 2320 926 2 72 2541 968 2 96 2760 4700 800 2 14 1991 849 2 38 2219 895 2 62 2445 939 2 86 2670 980 3 10 2895 4800 815 2 26 2111 863 2 51 2344 909 2 76 2575 952 3 01 2805 993 3 25 3034 4900 8...

Страница 34: ...2 76 2575 952 3 01 2805 993 3 25 3034 4900 829 2 40 2235 877 2 65 2473 922 2 91 2709 965 3 16 2944 1005 3 41 3178 5000 844 2 54 2365 891 2 80 2608 936 3 06 2849 978 3 31 3089 1018 3 57 3328 AIRFLOW CF...

Страница 35: ...53 977 3 78 3525 1018 4 07 3796 1057 4 36 4066 1094 4 65 4335 5700 950 3 67 3421 992 3 97 3698 1032 4 26 3974 1070 4 56 4249 1107 4 85 4522 5800 965 3 85 3594 1006 4 16 3876 1046 4 46 4157 1084 4 76 4...

Страница 36: ...8 660 1 23 1151 727 1 53 1422 787 1 82 1702 841 2 13 1991 3300 596 1 03 957 672 1 32 1228 738 1 61 1506 797 1 92 1792 851 2 24 2088 3400 609 1 10 1030 684 1 40 1308 749 1 71 1593 808 2 02 1887 861 2 3...

Страница 37: ...2 2 46 2294 3600 635 1 27 1187 708 1 59 1481 771 1 91 1781 829 2 24 2088 882 2 58 2403 3700 649 1 36 1272 720 1 69 1573 783 2 02 1881 840 2 35 2195 892 2 70 2517 3750 655 1 41 1316 726 1 74 1621 789 2...

Страница 38: ...09 1 42 1322 761 1 61 1506 812 1 82 1695 860 2 03 1890 4100 668 1 31 1223 722 1 51 1405 773 1 71 1593 822 1 92 1786 870 2 13 1984 4200 682 1 40 1305 734 1 60 1492 784 1 80 1683 833 2 02 1880 880 2 23...

Страница 39: ...73 1 71 1593 822 1 92 1786 870 2 13 1984 4200 682 1 40 1305 734 1 60 1492 784 1 80 1683 833 2 02 1880 880 2 23 2082 4300 696 1 49 1392 747 1 70 1582 796 1 91 1777 844 2 12 1979 890 2 34 2184 AIRFLOW C...

Страница 40: ...751 1 91 1778 798 2 13 1984 844 2 35 2195 889 2 59 2412 932 2 82 2633 4800 765 2 02 1885 812 2 25 2095 856 2 48 2310 900 2 71 2531 942 2 95 2756 4900 779 2 14 1996 825 2 37 2210 869 2 61 2430 912 2 85...

Страница 41: ...856 2 48 2310 900 2 71 2531 942 2 95 2756 4900 779 2 14 1996 825 2 37 2210 869 2 61 2430 912 2 85 2654 953 3 09 2883 5000 793 2 26 2112 838 2 50 2330 881 2 74 2554 923 2 98 2782 965 3 23 3014 AIRFLOW...

Страница 42: ...3 99 3716 1021 4 26 3976 1057 4 55 4240 5900 921 3 61 3370 959 3 89 3626 997 4 17 3885 1033 4 45 4149 1069 4 74 4416 6000 935 3 79 3536 973 4 07 3795 1010 4 35 4059 1046 4 64 4326 1082 4 93 4598 6100...

Страница 43: ...eakage could occur Compressor Rotation On 3 phase units it is impor tant to be certain the scroll compressor is rotating in the proper direction To determine whether or not compressor is rotating in t...

Страница 44: ...r temperature the dampers will maintain at the minimum open position Below 45 F the dampers will be completely shut As the supply air temperature rises the damp ers will come back open to the minimum...

Страница 45: ...t available Economizer position is NOT forced When free cooling is available the outdoor air damper is positioned through the use of a Proportional Integral PID control process to provide a calculated...

Страница 46: ...idification coil it is exposed to the cold supply airflow coming through the evaporator coil The liquid is fur ther subcooled to a temperature approaching the evaporator leaving air temperature The li...

Страница 47: ...See Fig 52 To hold top panel open place coil corner post between top panel and center post See Fig 53 4 Remove device holding coil sections together at return end of condenser coil Carefully separate...

Страница 48: ...nt the temperature sensing device on the suc tion line and insulate it so that outdoor ambient temperature does not affect the reading Indoor air cfm must be within the normal operating range of the u...

Страница 49: ...E DEHUMIDIFICA TION SYSTEM Refer to the charts Fig 60 62 to deter mine the proper leaving condenser pressure and temperature EXAMPLE Fig 60 Circuit 1 Leaving Condenser Pressure 300 psig Leaving Conden...

Страница 50: ...50 Fig 58 Cooling Charging Charts Standard 50HJ012 Fig 59 Cooling Charging Charts Standard 50HJ014...

Страница 51: ...ne solenoid valve be energized The subcooling reheat dehumidification coil liquid line solenoid valve MUST be energized to use the charging charts and the outdoor motor speed controller jumpered to ru...

Страница 52: ...tions with Subcooling Reheat Dehumidification Coil Energized Thermostatic expansion valve TXV 1 Check TXV bulb mounting and secure tightly to suc tion line 2 Replace TXV if stuck open or closed PROBLE...

Страница 53: ...ate 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 Low r...

Страница 54: ...tween 90 and 95 open 4 Turn the Exhaust potentiometer CW until the Exhaust LED turns off The LED should turn off when the potentiometer is approximately 90 The actuator should remain in position 5 Tur...

Страница 55: ...s based on the greater of DCV and supply air sen sor signals between closed and either maximum position DCV or fully open supply air signal INPUTS OUTPUTS Demand Control Ventilation DCV Enthalpy Y1 Y2...

Страница 56: ...rizontal units 1 2 Humidi MiZer adaptive dehumidification system 12 26 46 47 52 Humidistat 12 Indoor air quality sensor 15 22 Low pressure switch 6 Manual outdoor air damper 14 Mounting Compressor 43...

Страница 57: ......

Страница 58: ...ed in this manual including Unit Familiarization Maintenance Installation Overview Operating Sequence A large selection of product theory and skills programs are available using popular video based fo...

Страница 59: ......

Страница 60: ...NNECTIONS AND TERMINALS ARE TIGHT CHECK THAT RETURN INDOOR SECTION AIR FILTERS ARE CLEAN AND IN PLACE VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING AND O...

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