SERVICE PROCEDURES
Continued
Changing Burner Orifice
1.Shut off gas supply to heater.
2.Remove lower front access panel on heater.
3.Disconnect burner tube from orifice holder (see Figure 25).
4.Remove orifice holder from burner (see Figure 25).
5.Use socket or
6.Clean and replace orifice, or replace with new orifice.
7.Turn on gas to heater and check for gas leaks. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.
8.Replace lower front access panel.
BLOWER
WIRING
DIAGRAM
(For Models With
Burner
Orifice
Burner
Tube
Orifice
Holder
Figure 25 - Orifice Location (35,000 BTU/Hr Burner Shown)
Figure 26 - Orifice
Fan Switch
(Off/On/Auto)
Auto
Off
On
Blower Assembly)
Red
Fan
34
Black Blue
110/115 V.A.C.
Black
White
Green
Switch (N.O.)
Black
Blower
Motor
Red
White
100792
