Part number
550-143-015/1221
2
Multi-Boiler Wiring Kit Instructions
Figure 1
Removing Control Panel Cover
4. Remove two (2) Phillips head screws that hold control
tray cover plate in place. Lift and pull cover away from
tray. Set control tray cover to side.
Label wires before removing
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.
Mounting the Junction Box
1. Measure and mark the mounting location, using the
harness length as a reference. Ensure some slack to
avoid stressing the wiring.
2. Install the junction box to a nearby surface using the
four supplied screws through the holes in the junction
box sides.
3. For drywall installations, use the included drywall an-
chors for mounting the junction box.
Before proceeding:
1. Shut down the power to the boiler.
Shut off power to the boiler.
Failure to do so
can result in severe personal injury, death or
substantial property damage.
2. Remove door by disengaging the two (2) latches at the
sides of the front door.
3. Slightly lift and pull the door away from the boiler to
remove.
Installing Harness
1. Route the 5-pin side of the supplied harness through the
low voltage knockout on the bottom of the boiler cabinet,
indicated as “A” in Figure 3 on page 3.
2. The harness should route behind the control mounting
bracket, indicated as “B” in Figure 3 on page 3.
3. Route the harness through the large opening on the top
right of the control mounting bracket (“C” in Figure 3 on
page 3). Make connection to boiler control board “D”
in Figure 3 on page 3.
4. Press the mounting clip through the hole in the right side
of the control mounting bracket at approximate location
indicated by “B” in Figure 3 on page 3.
5. Firmly insert the grommet, supplied on the harness, into
the knockout in the bottom of the boiler cabinet.
6. Connect the Ethernet side of the harness into the circuit
board in the junction box. Firmly install the grommet.
Figure 2
Junction Box
Remove these two (2) screws
