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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500188-01
Printed in U.S.A.
Form 50HC-4-14-02SM Rev. A
Pg 1
4-19
Replaces: 50HC-4-14-01SM
Service and Maintenance Instructions
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 2
UNIT ARRANGEMENT AND ACCESS. . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 3
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . 4
Supply Fan (Direct-Drive) . . . . . . . . . . . . . . . . . . . . 4
Supply Fan (Belt-Drive) . . . . . . . . . . . . . . . . . . . . . . 6
STAGED AIR VOLUME CONTROL — 2 SPEED FAN
WITH VARIABLE FREQUENCY DRIVE (VFD) . . 8
Staged Air Volume (SAV™) Indoor Fan Speed
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
(VFD) INSTALLATION
AND TROUBLESHOOTING . . . . . . . . . . . . . . . . . 8
MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Replacing the Motor. . . . . . . . . . . . . . . . . . . . . . . . . 9
Changing Fan Wheel Speed . . . . . . . . . . . . . . . . . . 9
COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Condenser Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Condenser Coil Maintenance and Cleaning
Recommendation. . . . . . . . . . . . . . . . . . . . . . . . 12
Evaporator Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
THERMOSTATIC EXPANSION VALVE (TXV) . . . . 13
TXV Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Replacing TXV . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Refrigerant System Pressure Access Ports . . . . 14
PURON® (R-410A) REFRIGERANT. . . . . . . . . . . . 15
Refrigerant Charge. . . . . . . . . . . . . . . . . . . . . . . . . 15
COOLING CHARGING CHARTS . . . . . . . . . . . . . . 15
COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Replacing Compressor . . . . . . . . . . . . . . . . . . . . . 18
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . 18
Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Condenser-Fan Adjustment . . . . . . . . . . . . . . . . . 18
CONVENIENCE OUTLETS . . . . . . . . . . . . . . . . . . . 20
Convenience Outlets . . . . . . . . . . . . . . . . . . . . . . . 20
Installing Weatherproof Cover . . . . . . . . . . . . . . . 20
Non-Powered Type. . . . . . . . . . . . . . . . . . . . . . . . . 20
Unit-Powered Type. . . . . . . . . . . . . . . . . . . . . . . . . 20
Duty Cycle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Fuse on Powered Type . . . . . . . . . . . . . . . . . . . . . 21
ELECTRIC HEATERS . . . . . . . . . . . . . . . . . . . . . . . 21
Completing Heater Installation . . . . . . . . . . . . . . . 22
SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . 24
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Smoke Detector Sensor . . . . . . . . . . . . . . . . . . . . 24
Smoke Detector Locations. . . . . . . . . . . . . . . . . . 25
Completing Installation of Return Air Smoke
Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
FIOP Smoke Detector Wiring and Response . . . 26
SENSOR AND CONTROLLER TESTS . . . . . . . . . 26
Sensor Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . 26
Controller Alarm Test . . . . . . . . . . . . . . . . . . . . . . 26
Dirty Controller Test . . . . . . . . . . . . . . . . . . . . . . . 27
Dirty Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . 27
Changing the Dirty Sensor Test . . . . . . . . . . . . . 27
Remote Station Test . . . . . . . . . . . . . . . . . . . . . . . 28
SD-TRK4 Remote Alarm Test Procedure . . . . . . 28
Remote Test/Reset Station Dirty Sensor Test . . 28
Dirty Sensor Test Using an SD-TRK4 . . . . . . . . . 28
Detector Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . 28
Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 29
PROTECTIVE DEVICES . . . . . . . . . . . . . . . . . . . . 29
Compressor Protection . . . . . . . . . . . . . . . . . . . . 29
Relief Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Control Circuit, 24-V . . . . . . . . . . . . . . . . . . . . . . . 30
PremierLink™ Control . . . . . . . . . . . . . . . . . . . . . 30
RTU Open Control System. . . . . . . . . . . . . . . . . . 30
ECONOMIZER SYSTEMS . . . . . . . . . . . . . . . . . . . 30
EconoMi$er® IV Standard Sensors. . . . . . . . . . . 36
EconoMi$er IV Control Modes . . . . . . . . . . . . . . . 36
EconoMi$er IV Preparation . . . . . . . . . . . . . . . . . 40
Differential Enthalpy . . . . . . . . . . . . . . . . . . . . . . . 40
Single Enthalpy . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
DCV (Demand Controlled Ventilation) and Power
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
DCV Minimum and Maximum Position . . . . . . . . 40
Supply-Air Sensor Input. . . . . . . . . . . . . . . . . . . . 40
EconoMi$er IV Troubleshooting Completion . . . 40
EconoMi$er® X (Factory Option) . . . . . . . . . . . . 41
PRE-START-UP/START-UP . . . . . . . . . . . . . . . . . 55
START-UP, GENERAL . . . . . . . . . . . . . . . . . . . . . 55
Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Additional Installation/Inspection . . . . . . . . . . . . 55
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . 55
Outdoor-Air Inlet Screens . . . . . . . . . . . . . . . . . . 55
Compressor Mounting . . . . . . . . . . . . . . . . . . . . . 55
Internal Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Refrigerant Service Ports. . . . . . . . . . . . . . . . . . . 56
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . 56
Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
WeatherMaster
®
50HC04-14
Single Package Rooftop Electric Cooling Unit
with Puron
®
(R-410A) Refrigerant
Содержание WeatherMaster 50HC04
Страница 32: ...32 Fig 63 RTU Open Overlay for Economizer Wiring ...
Страница 33: ...33 Fig 64 VFD Overlay for W2770 Controller Wiring ...
Страница 85: ...85 Fig B 50HC A04 A06 PAC Control Diagram 208 1 60 208 230 3 60 460 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 86: ...86 Fig C 50HC A07 PAC Control Diagram 208 230 3 60 460 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 89: ...89 Fig F 50HC D08 D09 PAC Control Diagram 208 230 3 60 460 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 90: ...90 Fig G 50HC D11 PAC Control Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 91: ...91 Fig H 50HC D12 PAC Control Diagram 208 230 3 60 460 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 92: ...92 Fig I 50HC D14 PAC Control Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 93: ...93 Fig J 50HC A04 A06 PAC Power Diagram 208 230 1 60 APPENDIX D WIRING DIAGRAMS ...
Страница 94: ...94 Fig K 50HC A04 A06 PAC Power Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 95: ...95 Fig L 50HC A07 PAC Power Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 98: ...98 Fig O 50HC D07 PAC Power Diagram 575 3 60 6 Ton 2 Stage with Dehumidification APPENDIX D WIRING DIAGRAMS ...
Страница 99: ...99 Fig P 50HC D08 D09 PAC Power Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 100: ...100 Fig Q 50HC D11 PAC Power Diagram 208 230 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 101: ...101 Fig R 50HC D11 PAC Power Diagram 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 102: ...102 Fig S 50HC D12 PAC Power Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 103: ...103 Fig T 50HC D14 PAC Power Diagram 208 230 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 104: ...104 Fig U 50HC D14 PAC Power Diagram 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 109: ...109 Fig Z 50HC D12 PAC Control Diagram 230 460 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 110: ...110 Fig AA 50HC D14 PAC Control Diagram 230 460 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 111: ...111 Fig AB 50HC A04 A06 PAC Power Diagram 208 230 1 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 112: ...112 Fig AC 50HC A04 A06 PAC Power Diagram 208 230 460 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 113: ...113 Fig AD 50HC A04 A06 PAC Power Diagram 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 114: ...114 Fig AE 50HC A07 PAC Power Diagram 208 230 460 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 115: ...115 Fig AF 50HC A07 PAC Power Diagram 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 116: ...116 Fig AG 50HC D08 D09 PAC Power Diagram 208 230 460 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 117: ...117 Fig AH 50HC D08 D09 PAC Power Diagram 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 118: ...118 Fig AI 50HC D11 PAC Power Diagram 208 230 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 119: ...119 Fig AJ 50HC D11 PAC Power Diagram 460 3 60 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 121: ...121 Fig AL 50HC D14 PAC Power Diagram 208 230 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 122: ...122 Fig AM 50HC D14 PAC Power Diagram 460 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 123: ...123 Fig AN 50HC D14 PAC Power Diagram 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 124: ...124 Fig AO PremierLink System A04 A06 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Страница 125: ...125 Fig AP RTU Open System Control A04 A06 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Страница 126: ...126 Fig AQ PremierLink System A07 D14 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Страница 127: ...127 Fig AR RTU Open A07 D14 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...