Installation Guide
32 Hydronic Air Handler Installaon and Operaon Manual
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.
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.
Table 2: Domestic Priority Configuration
Switch
Configuration
Required
Leads/Wires
Function
Generic Air
Handler
White/Black Normally Closed
External Pump
Connection 1
To Domestic
Priority Switch
PC Board Wiring for
the above
application example.
5.6.3.2 Wiring Instructions
5.6.3.3 Next Steps
Proceed to the next section: “5.6.4 Test the Switch After Installation.”
Boiler T/T1
Connected to Air
Handler T/T Terminal