Exv Board Works:
Electronic Expansion Valve (EXV) Board — The 30XA080,082 unit has one EXV board. The 30XA090- 500 units have one EXV board per circuit. See Fig. 10. The board is responsible for monitoring the suction gas temperature and economizer gas temperature thermistors. The board also signals the main EXV and economizer EXV (ECEXV) motors to open or close. The electronic expansion valve board responds to commands from the MBB and sends the MBB the results of the channels it monitors via the LEN (Local Equipment Network). See below for DIP switch information. See Tables 6 and 7 for EXV inputs and outputs.
CPM-A DIP Switch 1 2 3 4 Address: OFF OFF OFF OFF
CPM-B DIP Switch 1 2 3 4 Address: OFF OFF ON OFF
CPM-C DIP Switch 1 2 3 4 Address: OFF OFF OFF ON
EXV BOARD A (080-500) DIP SWITCH 123456 7 8 Address: ON ON ON ON ON ON OFF ON EXV BOARD B (090-500) DIP SWITCH 1 23456 7 8 Address: OFF ON ON ON ON ON OFF ON EXV BOARD C (400-500) DIP SWITCH 1 2 3456 7 8 Address: ON OFF ON ON ON ON OFF ON
Electronic Expansion Valve (EXV) Board — The 30XA080,082 unit has one EXV board. The 30XA090- 500 units have one EXV board per circuit. See Fig. 10. The board is responsible for monitoring the suction gas temperature and economizer gas temperature thermistors. The board also signals the main EXV and economizer EXV (ECEXV) motors to open or close. The electronic expansion valve board responds to commands from the MBB and sends the MBB the results of the channels it monitors via the LEN (Local Equipment Network). See below for DIP switch information. See Tables 6 and 7 for EXV inputs and outputs.
CPM-A DIP Switch 1 2 3 4 Address: OFF OFF OFF OFF
CPM-B DIP Switch 1 2 3 4 Address: OFF OFF ON OFF
CPM-C DIP Switch 1 2 3 4 Address: OFF OFF OFF ON
EXV BOARD A (080-500) DIP SWITCH 123456 7 8 Address: ON ON ON ON ON ON OFF ON EXV BOARD B (090-500) DIP SWITCH 1 23456 7 8 Address: OFF ON ON ON ON ON OFF ON EXV BOARD C (400-500) DIP SWITCH 1 2 3456 7 8 Address: ON OFF ON ON ON ON OFF ON
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