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- Tue Dec 17, 2019 7:38 pm
- Forum: Help and Advice
- Topic: Upgrading from ABS-OR-3 question
- Replies: 1
- Views: 7924
Upgrading from ABS-OR-3 question
I'm planning to upgrade both my zone dampers and control board for a 2 zone gas furnace & AC system. I believe the appropriate board is a NCM-300. The wiring looks straightforward, once I eliminate my selector switch wires from the old system. I currently use a thermostat that has a built in ...