Lennox Hearth E42ODGNE-H Electronic Appliances, Refer to on, ELECtrONIC PILOt Pilot Sensor

Electronic Appliances

Step 4. Dexen Electronic Valves - See Figure

20and the instructions provided with the kit. Remove and discard the two pressure regulator mounting screws. Remove the pressure regula- tor and diaphragm. Discard all removed compo- nents. Ensure the rubber gasket installed on the back of the replacement pressure regulator is properly positioned. Install the new pressure regulator using the new screws supplied with the kit. Tighten screws to 25 In. lb. torque.

Note: Natural gas regulators are identified with a blue dot. Propane regulators have a red dot.

Pilot Stage terminal

Ground (tP)

tP

Gas Outlet to Burner

Pressure-tap	Pilot Gas
(Inlet)	Outlet

IN
tH tP
LO HI	PILOt		Supply
tH			Gas
Out		IN	Inlet
VENt

Step 5. See Figure 21 and replace the pilot orifice as follows: Remove pilot hood assembly by grasping the hood and pulling the assembly straight up. Under the hood is the pilot orifice. With caution and using a magnetic screwdriver, undo the pilot orifice and remove it from the

Burner Stage	regulator	Pressure-tap
terminal	Mounting Screw	(Manifold)

Figure 20

assembly. Carefully replace the orifice with the one provided with the kit. Press the pilot hood back over the assembly. The orientation should be aligned as shown in Figure 21. Exercise extreme care to prevent damage to or break- age of the ignitor assembly.

Note: Propane pilot orifices are identified with a countersink in the head. Natural gas orifices do not have this countersink. See Figure 21.

Step 6. (Refer to Figure 19 on page 15 )

A. Remove the orifice from the manifold with a 1/2" deep throat socket. See the following table for orifice sizes for natural and propane models. Figure 22 illustrates the orifice. Use pipe joint compound or Teflon tape on all pipe fittings before installing (ensure propane resistant compounds are used in propane ap- plications, do not use pipe joint compounds on flare fittings).

B. Retrieve the burner and slide the venturi tube over the orifice. Secure the burner in place with the clip shown in Figure 19.

Step 7. Reassemble the remaining components by reversing the procedures outlined in the preceding steps.

ELECtrONIC PILOt
	Pilot
Sensor	Hood
Ignitor

PrOPANE NAturAL

Note: If the ignitor is damaged, a replace- ment kit is available, order Catalog Number 87L54.

Figure 21

Model No.	Orifice size
	Natural	Propane
E36ODG	#28	#47
	(0.1405)	(0.0785)
E42ODG	#28	#47
	(0.1405)	(0.0785)

Figure 22

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

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