Maintenance And Servicing; Maintenance Checklist; Millivolt And Systems Checks; Vent Pipe Maintenance - Lennox Elite Series Installation And Operation Manual

MAINTENANCE AND SERVICING

Turn off gas and electrical power to the fireplace
and allow it to cool before cleaning or servicing
the appliance.
CAUTION: Wear gloves and safety glasses for protection while
doing required maintenance.
Verify proper operation after servicing.
S'assurer que l'appareil fonctionne adéquatement une fois
l'entretien terminé.

Maintenance Checklist:

The following should only be performed by a qualified service
technician.
1. Annual inspection should be made and the following checks per-
formed:
o When unit is cool, open glass viewing door and inspect burner for
dirt, soot and lint accumulations and remove if necessary. If exces-
sive soot accumulation is present on burner, have a qualified service
technician adjust
o Clean inside of glass viewing door with gas fireplace glass cleaner.
NEVER attempt to open door or clean
hot.
o Check the hot air outlet vents for lint or other accumulations. Never
block or restrict vent openings or obstruct flow of ventilation air.
o Check that direct-vent pipe, air intake and flue are open and free of
soot, blockage, or debris.
o Check gaskets once a year. Gaskets must be tight. Replace if neces-
sary.
o Inspect the pilot system for proper flame. NEVER ADJUST THE
PILOT until after the gas pressure has been checked and supply
lines have been completely bled (this may take an hour or more when
bleeding through the pilot). All pilots are checked and burned at the
factory prior to shipment. The pilot adjustment screw is located to
the lower left of the flame height control knob.
.25 Adjust the pilot screw to properly size the flames. The flames
should completely surround the thermopile and thermocouple and
extend across the main burner tube ports. Be careful not to back
the screw out of its threads.
o Check that the area around the stove is kept clear and is free of
combustible materials, gasoline and other
and liquids.
o Check the millivolt system as per the table on this page.
24
WARNING
burner for proper combustion.
glass when unit is
flammable vapors
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
2. The viewing glass should be cleaned periodically (see Glass Door
Cleaning and Maintenance).
3. Should repairs or maintenance of the stove require the disassem-
bly of the vent/air intake system, the reassembly and resealing
should be completed by a qualified service technician and follow
the instructions on Page 12 of this manual.
Millivolt and System Checks
Check To
Test Test
A Complete
System
B Thermopile
Output
C System
Resistance
See Figure 33 - Wiring Terminals
Proper Pilot Flame Appearance
Figure 34

Vent Pipe Maintenance

Conduct an inspection of the venting system semiannually.
Recommended areas to inspect are as follows:
1. Check areas of the venting system which are exposed to
the elements for corrosion. These will appear as rust spots,
streaks, or, in extreme cases, holes. These components should
immediately be replaced.
2. Remove the cap and shine a flashlight down the vent. Remove
any bird nests or other foreign material.
3. Check for evidence of excessive condensate, such as water
droplets forming in the inner liner and subsequently dripping
out at joints. Continuous condensate can cause corrosion of
caps, pipe and fittings. It may be caused by having excessive
lateral runs, too many elbows, or exterior portions of the system
being exposed to cold weather.
4. Inspect joints to verify that no pipe sections or fittings have been
disturbed and consequently loosened. Also check mechanical
supports such as wall straps or plumbers' tape for rigidity.
Connect Thermostat Meter Read-
Meter Connects
Leads to Should Be
Terminals
2 & 3 Closed 100 MV
or More
1 & 2 Open Greater Than
325 MV
2 & 3 Closed 2.5 Ohms
ing