Installation Guide

Hydronic Air Handler Installaon and Operaon Manual 29
1. Attach the harness plug from the Domestic
Priority Switch (black, white, and red) as
described in Table 1 (located on next page).
2. Install the hydronic air handler per the
instructions in the “S-BMS/Air Handler Switch
Installation Instructions.” Follow steps for a
“Generic Air Handler.”
WARNING
Adjust only the parameter settings listed
below. Do not adjust any other parameter
settings unless specifically instructed to do so.
3. Press the (Up) button until 0 6 A appears
on the display.
4. Press the On/Off button to change the
selection between 0 6 A for BMS and 0 6
for Air Handler (AH).
5. Selecting the primary water heater is
complete. Press the A button to exit.
1. Locate the two push buttons (A and B) on
the PC Board.
A
B
2. Press the A button for 1 second. 0 1 A
appears on the controller display.
0 1 A
WARNING
Ensure the power supply to the water heater
and hydronic air handler is disconnected before
starting installation. Removing the front cover
will expose live mains voltage connections.
1. Power OFF the tankless water heater or
boiler by unplugging the power cord or
turning off the circuit breaker. The controller
on the water heater or boiler does not
control the electrical power.
2. Remove the front panel of the water heater
or boiler.
3. Locate the wiring bundle and find the wiring
tagged “Air-H.” Temporarily remove the
cable tie and separate this connector from
the main bundle. Fasten the cable tie
around the remaining bundle.
4. Attach the switch circuit board using the
mounting screw provided (A in image
below). If required, adjust the position of the
main wiring bundle to provide enough room.
5. Attach the harness plug labeled “Air-H” to
the matching socket on the Domestic
Priority Switch (C in image below).
5.6.1.2 Wiring Instructions
5.6.1.3 Set Parameter Instructions
5.6.1.4 Next Steps
5.6.2.1 Install Switch Circuit Board
A
B
C
Proceed to section “5.6.4 Test the Switch After
Installation.”