Maintenance; General; Cleaning - Montigo L42DF Installation & Maintenance Manual

L42DF* Indoor Gas Fireplace
Lighting Instructions
See pages 21 to 23.

General

Have the fireplace and installation inspected yearly.
The inspection must include, but is not limited to, the
following:
• A visual check of the entire vent system and termination.
• An inspection of the explosion relief flappers and the door gaskets
to ensure a proper seal.
• An inspection of the burner, vent run, and primary air openings.
• An inspection of the gas valve, gas components, and pilot flame.
For your convenience a 1/8" manifold pressure tap is supplied
on the gas valve for a test gauge connection.
• Ensure proper log placement as per this manual.
• Inspection of all optional equipment; fans, thermostats, etc.
■ 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 pressure
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 vapors and
liquids.
■ Do not use this appliance if any part has been under water.
Immediately 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 smoke and a
visible film may be left on the glass. This is a normal condition, and is
the result of burning of protective coatings on new metal.
■ Glass must be cleaned periodically to remove any film (which is
a normal by-product of combustion) which may be visible. Film
can easily be removed by removing the door, as shown on Page
19. Handle the door carefully, and clean it with non-abrasive glass
cleaners. 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 using normal household
products.
■ Use a vacuum cleaner or whisk broom to keep the control
compartment, burner, and firebox free from dust and lint.
■ Logs may be cleaned periodically with a vacuum to remove soot
or other contaminates.
Page 24

Maintenance

Hi-Lo Burner Adjustment: (SIT Nova 820).
The L42DF* is equipped with an adjustable burner, allowing you to raise
or lower the flames. To adjust the flames, locate the black knob marked
'Hi-Lo', in the centre of the gas control valve (See Figure 32).
■ To raise the flame height, turn the black knob (located behind
the lower trim) counter-clockwise.
■ To lower the flame height, turn clockwise.
'Hi-Lo' Adjustment Knob
Gas Control Knob
(Shown in "Pilot" position)
Figure 32. 'Hi-Lo' Adjustment on the L42DF* s gas valve,
Pilot Burner Adjustment:
1. Locate Pilot Adjustment Screw. (See figure 33.)
2. Adjust pilot screw to provide properly sized flame as shown.
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.
Inlet Pressure
Figure 33. 'Pilot' Adjustment on the L42DF* s gas valve.
(SIT Nova 820).
Pilot Adjustment Screw
Manifold Pressure
Test Connection
Models
L42DFN
L42DFL
Power
Generator
Wall Switch
XG0181 - 112811