Monessen Hearth 36CDVXTRN User Manual

34

1.  Disconnect power to the unit and shut off the gas sup-

ply.

2.  Remove window frame assembly.
3.  Remove the lava rock and ember material. (Fig. 67)

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REMOVE

Front Log

Lava Rock

Ember 

Material

CO134

Fig. 67  Remove lava rock and ember material.

4.  Push the log support towards the back of the fireplace 

and lift out the front log mounting assembly. (Fig. 68)

5.  Remove the two (2) screws securing the rear log to 

the back of the firebox. Remove the three (3) screws 
securing the rear log support to the back of the fire-
box. (Fig. 69)

#/
REMOVE

Remove 

Screws

Log Support & Front Log

CO135

Fig. 68  Remove rear log and log support and front log.

&#
REMOVE

Rear Log 
Support

Remove 

Screws

Burner Tube

Remove Screws

Pilot Assembly

FC114

Fig. 69  Remove burner tube and rear log support.

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BRASS

Orifice

Brass Elbow

FC111

Fig. 70  Remove orifice from brass elbow.

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AIR

Air Shutter Adjustment 

Screw

LP: Fully Open
NG: 1/8” Open

FC112

Fig. 71  Adjust air shutter.

8.  Install the new conversion orifice.
9.  Loosen the adjusting screw that holds the air shutter 

to the burner tube. Adjust air shutter to:

  LP - fully open; NG - 1/8” open.  (Fig. 71)
10. Install the burner tube and secure with the two (2) 

screws removed earlier.

11.  Burner orifice installation complete.
Pilot Conversion
NOTE: It is not necessary to remove the pilot tube for 
conversion.
1.  Remove pilot hood by lifting up. (Fig. 72)
2.  Remove pilot orifice with the appropriate size Allen 

wrench. (Fig. 73)

3.  Install conversion pilot orifice.
4.  Reinstall pilot hood. Be sure to align pilot hood with 

index tab.

Pilot conversion installation is complete.

6.  Remove the two (2) screws securing the burner tube 

to the burner pan. (Fig. 69)

7.  Remove the orifice from the brass elbow. Use a 9/16” 

open end wrench to hold the elbow while using the 
1/2” wrench to remove the orifice. (Fig. 70)