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5.6.1.2 Wiring Instructions
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."
5.6.1.3 Set Parameter Instructions
WARNING
Adjust only the parameter settings listed
below. Do not adjust any other parameter
settings unless specifically instructed to do so.
1. Locate the two push buttons (A and B) on
the PC Board.
2. Press the A button for 1 second.
appears on the controller display.
0 1 A
3. Press the
(Up) button until
on the display.
4. Press the On/Off button to change the
0 6A
selection between
for Air Handler (AH).
5. Selecting the primary water heater is
complete. Press the A button to exit.
5.6.1.4 Next Steps
Proceed to section "5.6.4 Test the Switch After
Installation."
Hydronic Air Handler Installation and Operation Manual
A
B
0 1A
06 A
appears
0 6
for BMS and
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.
5.6.2.1 Install Switch Circuit Board
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).
C
B
A
29
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