Water Heater User Manual
33
Figure 53.
SECURE WITH 
SCREWS REMOVED 
EARLIER
25. Install the air intake chamber box by rotating 
the top of the air intake chamber box from left to 
right (only a few inches in both directions) while 
pressing on the bottom portion of the air intake 
chamber box. When properly installed the air 
intake chamber box will be in place against the 
water heater’s side aligning with the screw holes. 
26. Secure the air intake chamber box to the water 
heater’s side by reusing the 4 screws removed in 
step 13 (Figure 53).
Installing the Fan in the Air Intake Chamber Box:
27. 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 54). (Note: Connectors are designed in 
such a manner if the connection is not properly 
aligned they will not lock together).
28. Replace the fan inside the air intake chamber 
box. It is imperative that the square portion of the 
fan air outlet be placed inside the raised square 
portion of the air intake chamber fan compartment 
(Figure 55). 
29. Ensuring the fan is properly aligned in the air 
intake chamber, secure the fan in place using the 
2 screws removed in step 9 (Figure 55).
30. 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 55).
31. Install the air intake chamber screen, ensuring that 
the prongs of the lower portion of the air intake 
chamber screen are in place in the holding slots. 
Using the 2 screws removed in step 6, secure the 
air intake chamber screen (Figure 56). 
32. Reattach the 3-wire wiring harness connector to 
the gas control valve (Figure 47).
33. Check the air hose tubing connection to the 
pressure switch to ensure the tubing has not 
loosen up or pulled off.
34. Turn on the electrical and the gas supplies to the 
water heater. Plug in the electric connection from 
the transformer to the electric outlet (Figure 46).
35. Restart the water heater by following the 
directions on the “Lighting and Operating 
Instructions” label located on the front of the water 
heater.
36. Upon verifying proper operation of the water 
heater, replace the manifold cover/outer door.
Figure 54.
GENTLY PUSH THE ELECTRICAL 
CONNECTORS TOGETHER UNTIL 
IT IS SNAP LOCKED. 
FAN
Figure 55.
INSTALL THE FAN USING THE 
TWO SCREWS REMOVED 
EARLIER.
FAN
Figure 56.
INSTALL THE AIR INTAKE 
CHAMBER SCREEN.










