Form No. 43539470
Oct 2019 A
–25–
15.7)
REMOVAL OF SPARK ELECTRODE AND HOT SURFACE IGNITER – DSI MODELS
Replacement procedure:
1.
Rotate the latching knob and open the large size door at the burner/gas valve compartment.
2.
Disconnect the wire lead wire from the spark electrode.
3.
Remove the (1) sheet metal screw holding the electrode and remove it.
4.
Replace this in reverse order. Note: Refer to the wiring connection diagrams in Section 9.0.
15.8)
REMOVAL OF GAS VALVE AND BURNER ORIFICE – DSI MODELS
Replacement procedure:
1.
Rotate the latching knob and open the large size door at the burner/gas valve compartment.
2.
Remove the (1) sheet metal screw from the gas valve cover panel and remove it.
3.
Disconnect the gas piping from the inlet side of the gas valve.
4.
Disconnect the wiring from the gas valve terminals.
5.
Remove the machine screw and washer from the bottom of the heater that is securing the main burner
and orifice holder block. Remove the complete gas valve assembly from the heater.
6.
Remove the main burner orifice from the orifice holder block.
7.
Remove gas valve from the assembly.
8.
Replace the orifice and gas valve in reverse order. The gas valve must be aligned straight with the orifice
holder block to allow proper installation into the heater. Note: After replacing the gas valve, check the gas
pressures and perform a gas leak test in accordance with Section 8.0.