Monessen Hearth 36CDVXTRN Testing for Leaks, Pilot Flame Adjustment, Reassembly

Pilot Hood
Pilot
Bracket
	CO105a
Fig. 72	Remove pilot hood.

Index Tab	Allen Wrench
Snap Ring
CO106a

Fig. 73 Remove pilot orifice and replace with conversion orifice.

Valve Regulator Conversion

SIT 820 NOVA Gas Control Valve (Fig. 74)

1.Using a Torx T20 or slotted screwdriver, remove and save the three pressure regulator mounting screws (A), pressure regulator tower (B) and diaphragm (C).

2.Ensure the rubber gasket (D) is properly positioned and install the new HI/LO pressure regulator to the valve using the new screws (E) supplied with the kit. Tighten screws securely. (Reference torque - 25 in.LB)

CDVX Series Direct Vent Gas Fireplace

3.Install the enclosed identification label (F) to the valve body where it can be easily seen.

Testing for Leaks

1.Apply gas to the system and light the pilot.

2.With a soapy solution check for leaks around the pilot assembly where the tube enters the pilot assembly. Tighten fitting if necessary.

3.Light the main burner and check for leaks around the new pressure regulator assembly. Tighten screws if necessary.

4.With the main burner “ON” rotate the Hi/Lo knob and verify the proper burner operation.

Pilot Flame Adjustment

Typically, the top 3/8” or 1/2” of the thermopile should be engulfed in the pilot flame. (Fig. 75)

To adjust pilot burner:

1.Remove pilot adjustment cap located on valve.

2.Adjust pilot screw to provide properly sized flame.

3.Replace pilot adjustment cap.

3/8” - 1/2” (10 - 13 mm)

FP1541

Fig. 75 Correct pilot flame appearance.

Reassembly

1.	Turn the fireplace off.
2.	Reverse Steps 3-6 in ‘Burner Orifice Conversion’ to
	reassemble fireplace.
3.	Reinstall glass door.

A

B

C

	OFF
	P
	I
O	TO

E

	OFF
	P
	I
O	TO

F

D

FC107/108

4. Conversion of the fireplace is complete.

Fig. 74 Nova SIT820 Gas Valve.

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