Maintenance - Montigo M40DV-CR Installation Operation & Maintenance

WARNING!
Do not attempt to clean glass when hot.
Do not clean glass with abrasive materials as any glass etch-
ing may cause premature glass failure.
General
Have the fireplace installation inspected yearly, including a visual

check of the vent system, the burner and the pilot flame. For con-
venience a 1/8" manifold pressure tap is supplied on the gas valve
for a test gauge connection. See Figure 25.
For Natural Gas this appliance requires a minimum inlet pressure

of 5.5" W.C. and a manifold pressure of 3.5" W.C.
For Propane Gas this appliance requires a minimum inlet pres-

sure of 11" W.C. and a manifold pressure of 10" W.C.
Always keep the fireplace area clear and free of combustible

materials, as well as gasoline and other flammable vapours and
liquids.
Do not use this appliance if any part has been under water. Imme-

diately call a qualified service technician to inspect the appliance
and to replace any part of the control system and any gas control
which has been under water.
Cleaning
When the fireplace is first activated, there may be some smoking and
a visible film may be left on the glass. This is a normal condition, and
is the result of burning the protective coatings on new metal.
Glass must be cleaned periodically to remove any film (a normal

bi-product of combustion) which may be visible. Film can easily
be removed by removing the door, as shown on page 9. Handle
the door carefully, and clean it with an approved glass cleaner.
One of the most effective products is Kel Kem.
Silicone seals on inner door during initial firing will "off gas",

leaving a visual deposit of a white substance on combustion
chamber walls. This can easily be removed by following the steps
described below.
 Use a vacuum cleaner or soft bristle brush to keep the control
compartment, burner, and firebox free from dust and lint.
CAUTION!
Cautions:
DO NOT OPERATE THIS FIREPLACE WITH-
OUT THE GLASS DOOR OR WITH A BROKEN
GLASS DOOR.
P/N XG0206

Maintenance

Pilot Adjustment Screw
Inlet
Pressure
Figure 25. Sit Nova 820 gas valve.
Pilot Burner Adjustment
1. Locate Pilot Adjustment Screw. (See figure 25.)
2. Adjust pilot key to provide properly sized flame. (See figure 26).
3. After installing or servicing, leak test with a soap solution with
main burner on. Coat pipe and tubing joints, gasket etc. with soap
solution. Bubbles indicate leaks. Tighten any areas where the
bubbles appear until the bubbling stops completely.
Figure 26. Pilot Burner
Fireplace gas control must be in the "OFF" position and pilot

and main burners extinguished when cleaning appliance with
a vacuum.
Doors can get very hot. Handle only when cool.

M40DV-CR/CL Corner Gas Fireplace
Gas Control Valve
Manifold Pressure
Test Connection
CAUTION!
Power
Generator
Wall Switch
Page 19