BURNER ORIFICE REMOVAL / REPLACEMENT
Important: Use only factory authorized replacement parts. If you lack the necessary skills to properly perform the installation, you should not proceed, but get help from a qualified service technician.
Tools required: 3/4”
Figure 102.
HOTTER 
COOLER
Electronic Control Display
Removing the Inner Door/Manifold/Burner Assembly:
1.Set the gas control valve/thermostat to its lowest setting by pressing the “COOLER” and “HOTTER” buttons together at the same time holding for 1 second. Then press the “COOLER” button to the lowest setting (Figure 102).
2.Turn gas control switch to the “OFF” position (located right side of the gas control valve/ thermostat) and turn off the gas supply to the unit (Figure 103).
3.Disconnect the electric connection by unplugging the transformer from the wall outlet (Figure 103).
4.Remove the manifold cover/outer door from the unit by depressing on the lower portion and pulling outward.
5.Unplug all the electrical connections from the bottom of the gas control valve/thermostat (Figure 104).
6.Disconnect the electrical flag terminals and air pressure tubing to the pressure switch (Figure 105).
7.Using a 3/4” open end wrench or a crescent wrench remove the manifold tube from the gas control valve/thermostat (turning counterclockwise
8.Use a 1/4” nut driver or 1/4” socket & ratchet to loosen the 2 hex head screws on the inner door so the inner door/manifold/burner assembly can be removed (Figure 106).
9.Remove inner door/manifold/burner assembly by grasping the manifold and pulling straight back. Care should be taken when inner door and burner assembly passes through jacket opening that it does not damage any of the electrical wiring or the air pressure hose (Figure 107).
Figure 103.
ON
OFF
ON/OFF
SWITCH
UNPLUGGED
Figure 104.
IMPORTANT: |
|
|
WHEN BRUSHING ON AN |
| GAS CONTROL |
APPROVED NONCORROSIVE |
| |
LEAK DETECTION SOLUTION, |
| VALVE/THERMOSTAT |
DO NOT SPLASH SOLUTION |
|
|
ONTO ELECTRICAL CON- |
|
|
NECTIONS. |
|
|
|
| PRESSURE |
MANIFOLD TUBE |
| SWITCH/FAN, |
| FV SENSOR | |
POWER SUPPLY | IGNITER/ | CONNECTOR |
| ||
TRANSFORMER | FLAME |
|
CONNECTOR | SENSE | DISPLAY, ANODE |
| CONNECTOR | ROD CONNECTOR |
Figure 105.
PRESSURE
SWITCH
MANIFOLD
TUBE
47