BM 
(ECM)
SW1 |
SW2 |
SW3 |
SW4
SW5
SW6
SW7
SW8
SW9
OFF ON
ECM
INTERFACE
BOARD
17
LEGEND
AL | — Alarm Relay Contacts | P1 | — Field Wiring Terminal Block | |||||||||
ASTAT | — Aquastat | RVS | — Reversing Valve Solenoid | |||||||||
BM | — Blower Motor | TRANS | — Transformer | |||||||||
CB | — Circuit Breaker |
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| Field Line Voltage Wiring |
CC | — Compressor Contactor |
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| Field Low Voltage Wiring |
CO | — Sensor, Condensate Overflow |
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| Printed Circuit Trace | ||
COMPR | — Compressor |
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DDC | — Direct Digital Control |
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| Relay/Contactor Coil |
DTS | — Discharge Temp Switch |
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ECM | — Electronically Commutated Motor |
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| Condensate Pan |
FP1 | — Sensor, Water Coil Freeze Protection |
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FP2 | — Sensor, Air Coil Freeze Protection |
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| Solenoid Coil |
HP | — |
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HWG | — Hot Water Generator |
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| Thermistor |
JW1 | — Jumper, Alarm |
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NSB | — Digital Night Setback |
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| Ground |
LOC | — Loss of Charge Pressure Switch |
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| Wire Nut |
MV | — Motorized Valve |
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NEC | — National Electrical Code |
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BM (ECM) 
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| J1 |
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| Y |
W | R | S1 |
| CFM | |
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| SW1 |
O |
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| SW2 |
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G |
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| SW3 |
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| SW4 |
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| SW5 |
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Y2 | G |
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| SW6 |
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| SW7 |
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| SW8 |
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Y1 | G |
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| SW9 |
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| OFF | ON | ||
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G | G | TB1 |
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| G | DEHUM | |
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R | C | Y2 Y1 G | O | W | C | R DH AL1 A | A | AL1 |
NOTES:
1.Compressor and blower motor thermally protected internally.
2.All wiring to the unit must comply with NEC and local codes.
3.Transformer for 208/230 v will be connected for 208 v operation. For 230 v operation, dis- connect RED lead at L1 and attach ORN lead to L1. Insulate open end of RED lead. Trans- former for 220/240 v will be connected for 220 v operation. For 240 v operation, disconnect RED lead at L1 and attach ORN lead to L1. Transformer is energy limiting or may have cir- cuit breaker.
4.FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.
5.Typical Aquazone™ thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage.
6.
7.Transformer secondary ground via Deluxe D board standoffs and screws to control box. (Ground available from top two standoffs as shown.)
8.Aquastat is
9.Place jumpers on 2 and 3, ECM board, when dehumidification mode is used.
Fig. 18 — Wiring of
