Water Heater User Manual
35
Replacing the Wiring Harness:
13. Locate the male to female electrical connection 
with close pin lock on wiring harness (located on 
the right side of fan) (Figure 62). 
14. To separate the electrical connection of the fan 
and wiring harness: press down on the back 
portion of the close pin lock of the electrical 
connection while pulling the connection in the 
opposite directions.
15. The wire harness goes through the rubber wire 
protector in the back of the air intake chamber box 
(Figure 62).
16. Reach inside the air intake chamber box and push 
on the center of the rubber wire protector pushing 
it and the wiring harness wires to the outside of 
the air intake chamber box (Figure 62).
17.  Remove the wiring harness from the wire 
channeling in the back center of the air intake 
chamber box (Figure 63).
18. The old wiring harness can now be discarded.
Installing the New Wiring Harness:
19. Route the multi-lead portion of the new wiring 
harness through the opening at the bottom of the 
water heater’s jacket (Figure 64).
20. Insert the fan wiring harness wire through the 
back and into the fan box compartment by 
threading the connector through the opening and 
insert in approximately 6 inches of wiring (up to 
the rubber wire protector) (Figure 62).
21. Push the rubber wire protector into place in the 
back of the air intake chamber box (Note: The 
rubber wire protector must be positioned properly 
and locked into place around both sides of the air 
intake chamber box) (Figure 63).
22. Position the wiring harness wire in the wiring 
channeling molded down the back center of the air 
intake chamber box (Figure 63).
23. Plug the electrical connections of the fan into the 
wiring harness: Align the electrical connections in 
such a position as to ensure the locking portions 
of the connections are on the same side. Gently 
push the electrical connectors together until the 
snap lock on the wiring harness engages the 
angular lock on the fan connector. Do Not use 
undue force in pushing these connectors together 
(Figure 62). (Note: Connectors are designed in 
such a manner if the connection is not properly 
aligned they will not lock together).
24. Route the wiring inside the fan box to the outer 
edge of the fan in such a manner to ensure it will 
not be pinched or damaged upon installation of 
the air intake screen (Figure 62).
Figure 61.
AIR INTAKE
CHAMBER BOX
REMOVAL
CHAMBER GASKET
ROTATE FROM 
LEFT TO RIGHT
 AND
PULL OUTWARD
REMOVE SCREWS
RUBBER WIRE 
PROTECTOR
Figure 62.
AIR INTAKE
CHAMBER SCREEN.
ELECTRICAL
CONNECTION
Figure 64.
ROUTE WIRING HARNESS 
THROUGH OPENING AT 
BOTTOM OF JACKET.
Figure 63.
RUBBER WIRE
PROTECTOR
WIRE HARNESS INSIDE 
WIRE CHANNELING
AIR PRESSURE TUBING
CONNECTION
REAR SIDE OF
THE AIR INTAKE
CHAMBER BOX










