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5. Attach the air handler/OPU circuit board to the PC Board via double-sided tape. Ensure the circuit
board does not make contact with the heat exchanger.
5.6.3.2 Wiring Instructions
1. Attach the harness plug from the Domestic
Priority Switch (black, white, and red) as
described in Table 2.
2. Check all wiring and reattach the front
cover.
3. Reconnect power.
PC Board Wiring for
the above
application example.
5.6.3.3 Next Steps
Proceed to the next section: "5.6.4 Test the Switch After Installation."
32
Table 2: Domestic Priority Configuration
Switch
Required
Configuration
Leads/Wires
Generic Air
White/Black
Handler
External Pump
Connection 1
Hydronic Air Handler Installation and Operation Manual
Function
Normally Closed
To Domestic
Priority Switch
Boiler T/T1
Connected to Air
Handler T/T Terminal
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