Maritime Geothermal WH-Series, Installation And Service Manual

Page: 73 / 77

1-Oct-2015 Page 73 002028MAN-01
TABLE 23 - Control Board Connector Descriptions (Bottom)
Name Description
A BACNet MS/TP RS-485
B BACNet MS/TP RS-485
GND BACNet MS/TP Ground for shield if required
STAGE1 Compressor Stage 1 Starts / stops the compressor
STAGE2 Compressor Stage 2 Turns on/off the compressor Stage 2 solenoid
RV_#1 Reversing Valve#1 Off in heating mode, on in cooling mode
RV_#2 Reversing Valve#2 Unused
SOL#1 Solenoid#1 Unused
SOL#2 Solenoid#2 Unused
24VAC Power supply for board 24VAC power for control board
COM Power supply for board GND for control board
AI_5 Analog In Channel 5 0 to 10VCD or 4-20mA user settable with board jumper
AI_4 Analog In Channel 4 0 to 10VCD or 4-20mA user settable with board jumper
AI_3 Analog In Channel 3 0 to 10VCD or 4-20mA user settable with board jumper
AI_2 Analog In Channel 2 0 to 10VCD or 4-20mA user settable with board jumper
AI_1 Analog In Channel 1 0 to 10VCD or 4-20mA user settable with board jumper
AI_0 Analog In Channel 0 0 to 10VCD or 4-20mA user settable with board jumper
GND Ground pin Ground for analog sensors.
GND Ground pin Ground for analog sensors.
5VDC Power for analog sensors Provides 5VDC power supply for sensors.
12VDC Power for analog sensors Provides 12VDC power supplu for sensors.
24VDC Power for analog sensors Provides 24VDC power supply for sensors.
A MODBUS RS-485
B MODBUS RS-485
GND MODBUS Ground for shield if required