Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500227-01
Printed in U.S.A.
Form 50TC-17-30-02SM
Pg 1
1-21
Replaces: 50TC-17-30-01SM
Service and Maintenance Instructions
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2
UNIT ARRANGEMENT AND ACCESS . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 3
Seasonal Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 3
SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . . 4
Supply Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 4
STAGED AIR VOLUME (SAV) CONTROL: 2-SPEED
DRIVE (VFD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Staged Air Volume (SAV) Indoor Fan Speed
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . 6
MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Replacing the Motor . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Changing Fan Wheel Speed by Changing
Pulleys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
EVAPORATOR COILS . . . . . . . . . . . . . . . . . . . . . . . . . 9
Coil Maintenance and Cleaning Recommendation . 9
Refrigerant System Pressure Access Ports . . . . . . 10
HUMIDI-MIZER
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Humidi-MiZer System Components . . . . . . . . . . . . 11
Operating Sequences . . . . . . . . . . . . . . . . . . . . . . . . 11
Humidi-MiZer Modes . . . . . . . . . . . . . . . . . . . . . . . . . 12
THERMOSTATIC EXPANSION VALVE (TXV) . . . . . 16
TXV Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Refrigerant System Pressure Access Ports . . . . . . 17
PURON (R-410A) REFRIGERANT . . . . . . . . . . . . . . 18
Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Using the Cooling Charging Charts . . . . . . . . . . . . 18
COOLING CHARGING CHARTS . . . . . . . . . . . . . . . . 19
COMPRESSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Replacing the Compressor . . . . . . . . . . . . . . . . . . . 23
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . 23
Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Adjusting the Condenser-Fan . . . . . . . . . . . . . . . . . 23
TROUBLESHOOTING THE COOLING SYSTEM . . . 24
CONVENIENCE OUTLETS . . . . . . . . . . . . . . . . . . . . 25
Non-Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Unit-Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Wet in Use Convenience Outlet Cover . . . . . . . . . . .25
GFCI Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Fuse On Powered Type . . . . . . . . . . . . . . . . . . . . . . .26
Using Unit-Mounted Convenience Outlets . . . . . . .26
Installing a Weatherproof Cover . . . . . . . . . . . . . . . .26
SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . . .26
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Smoke Detector Locations . . . . . . . . . . . . . . . . . . . .27
FIOP Smoke Detector Wiring and Response . . . . .28
Sensor and Controller Tests . . . . . . . . . . . . . . . . . . .29
Detector Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . .30
INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Normal State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Alarm State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Resetting Alarm and Trouble Condition Trips . . . .32
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
PROTECTIVE DEVICES . . . . . . . . . . . . . . . . . . . . . . .32
Compressor Protection . . . . . . . . . . . . . . . . . . . . . . .32
SUPPLY (INDOOR) FAN MOTOR PROTECTION . . .32
Control Circuit, 24v . . . . . . . . . . . . . . . . . . . . . . . . . .33
. . . . . . . . . . . . . . . . . . . . . . . .33
RTU Open Control System . . . . . . . . . . . . . . . . . . . .33
ECONOMI$ER SYSTEMS . . . . . . . . . . . . . . . . . . . . . .33
EconoMi$er IV Standard Sensors . . . . . . . . . . . . . .37
EconoMi$er® X (Factory Option)
. . . . . . . . . . . . . . .42
PRE-START-UP/START-UP . . . . . . . . . . . . . . . . . . . .56
START-UP, GENERAL . . . . . . . . . . . . . . . . . . . . . . . .56
Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Additional Installation/Inspection . . . . . . . . . . . . . .56
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Outdoor-Air Inlet Screens . . . . . . . . . . . . . . . . . . . . .56
Compressor Mounting . . . . . . . . . . . . . . . . . . . . . . . .57
Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Refrigerant Service Ports . . . . . . . . . . . . . . . . . . . . .57
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . .57
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Ventilation (Continuous Fan) . . . . . . . . . . . . . . . . . .57
START-UP, PREMIERLINK CONTROLS . . . . . . . . . .57
START-UP, RTU-OPEN CONTROLS . . . . . . . . . . . . .57
FASTENER TORQUE VALUES . . . . . . . . . . . . . . . . .57
APPENDIX A
—
MODEL NUMBER
NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . .58
APPENDIX B
—
PHYSICAL DATA . . . . . . . . . . . . . . .60
APPENDIX C
—
FAN PERFORMANCE . . . . . . . . . . .69
APPENDIX D
—
WIRING DIAGRAMS . . . . . . . . . . . .79
APPENDIX E
—
MOTORMASTER SENSOR
LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . .CL-1
WeatherMaker
®
50TC**17-30
Single Package Rooftop Unit
with Electric Cooling and Optional Electric Heat
with Puron® (R-410A) Refrigerant
Содержание WeatherMaker 50TC 17-30 Series
Страница 34: ...34 Fig 48 RTU Open Overlay for Economizer Wiring ...
Страница 35: ...35 Fig 49 VFD Overlay for W2770 Controller Wiring ...
Страница 80: ...80 Fig C 50TC 17 28 Control Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Страница 81: ...81 Fig D 50TC 30 Control Wiring Diagram 208 230 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Страница 82: ...82 Fig E 50TC 30 Control Wiring Diagram 460 3 60 575 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Страница 83: ...83 Fig F 50TC 17 30 Power Wiring Diagram 208 230 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Страница 84: ...84 Fig G 50TC 17 30 Power Wiring Diagram 460 3 60 575 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Страница 85: ...85 Fig H 50TC 17 30 Control Wiring Diagram with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 87: ...87 Fig J 50TC 17 30 Power Wiring Diagram 460 3 60 Units with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 88: ...88 Fig K 50TC 17 30 Power Wiring Diagram 575 3 60 Units with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 89: ...89 Fig L 50TC PremierLink System Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Страница 90: ...90 Fig M 50TC RTU Open Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Страница 91: ...91 Fig N 50TC SAV VFD System Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Страница 93: ......