Polar Air SWC-EC Series Service manual

HIGHWALL SWC-EC

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T ble of Contents
A. Technic l D t ................................................................................................................................................................... 4
General Description..................................................................................................................................................... 4
General Specifications ................................................................................................................................................. 5
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Coil Data ..................................................................................................................................................................... 7
Dimensional Drawings ................................................................................................................................................ 7
Sound power data ....................................................................................................................................................... 9
Drain Pump and Installation Fixture Optional) .......................................................................................................... 13
B. Inst ll tion ....................................................................................................................................................................... 14
Safety Precautions..................................................................................................................................................... 14
Before Installation ..................................................................................................................................................... 15
Mounting Plate Dimensions ....................................................................................................................................... 16
Mounting Plate Installation ....................................................................................................................................... 17
Condensate Drainage Hole Drilling ............................................................................................................................ 17
Hydronic Unit Installation .......................................................................................................................................... 18
Drainage Piping Works .............................................................................................................................................. 18
Pipe Connections with Valve ...................................................................................................................................... 19
C. M inten nce .................................................................................................................................................................... 20
Opening and Closing of Lift-Up Grille Cover ................................................................................................................ 20
Front Cover Assembly Removal .................................................................................................................................. 20
Air Vent and Water Purge Valves ............................................................................................................................... 20
Wiring Connections ................................................................................................................................................... 20
D. Control Specific tions: Intelligent Control (I TYPE) .......................................................................................................... 21
I/O Port Definitions ................................................................................................................................................... 21
Wiring Diagrams ....................................................................................................................................................... 22
Control Logics For 2-Pipe System ............................................................................................................................... 23
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Sleep Mode ............................................................................................................................................................... 28
Louver ...................................................................................................................................................................... 28
Buzzer ....................................................................................................................................................................... 28
Auto Restart ............................................................................................................................................................. 28
On/Off Switch ........................................................................................................................................................... 28

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Drain Pump ............................................................................................................................................................... 28
Float Switch ............................................................................................................................................................ 28
Electric Heater Safety Switch ................................................................................................................................... 29
Low Temperature Protection of Indoor Coil in Winter............................................................................................... 29
Network Setup ........................................................................................................................................................ 30
Open Modbus Protocol ............................................................................................................................................ 32
LED Display and Error Description ............................................................................................................................ 36
E. Control Specific tion: Flexible Function PCB – W Type Control........................................................................................ 38
I/O Port Definitions .................................................................................................................................................... 38
Wiring diagram ......................................................................................................................................................... 39
Onboard configuration .............................................................................................................................................. 40
Control Logics ............................................................................................................................................................ 41
LED Display and Error Description .............................................................................................................................. 41
F. Users Interf ce ................................................................................................................................................................. 42
Remote Control Handset ............................................................................................................................................ 42
G. Wired W ll P d Controller Oper tion Guide .................................................................................................................... 43
LED display ............................................................................................................................................................... 43
Dimensions and installation ...................................................................................................................................... 44
Operation guide ........................................................................................................................................................ 45
Error codes ............................................................................................................................................................... 49
H. Sensor Resist nce R-T Conversion T ble .......................................................................................................................... 50
I. Troubleshooting ................................................................................................................................................................ 52

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CAUTIONS
Before any service or maintenance operations turn off the mains electrical
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DO NOT turn OFF the main power supply when the unit is operating. Turn off the
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8
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