Millivolt Wiring Diagram; Maintenance And Servicing; Maintenance Checklist; Glass Maintenance - Lennox FIRESTAR MERIT GC3 Installation And Operation Manual

Millivolt Wiring Diagram

CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper and dangerous operation.
ATTENTION: Au moment de l'entretien des
commandes, étiquetez tous les fils avant de
les débrancher. Des erreurs de cáblage peu-
vent entraîner un fonctionnement inadéquat et
dangereux.
Pilot Hood
Thermopile
Spark Electrode
Pilot Tube
Thermopile Wire (Brown)
Connect to Terminals 1 & 2
On Gas Valve
Figure 19

MAINTENANCE AND SERVICING

WARNING
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.
Gas Valve
Terminal Snap Switch
Wire (Black SS1)
Inlet Pressure
Tap
Spark Electrode Wire
(Black) connect to
Piezo Igniter
Burner Orifice
On/Off Switch Wire
(Black) 001 Connect
Terminal 1 Gas Valve
Valve Terminals
Valve Snap Switch
Wire (Black) SS2
Inlet Elbow
Piezo Igniter
Vent Safety Snap
Switch
Off/On/Pilot
Manifold
Pressure Tap
Flame Adjustment
On/Off
Switch
(White) TH2
On/Off Switch Wire (Black) 002 - Connect Terminal 3 Gas Valve

Maintenance Checklist

Should Only Be Performed by a Qualified Service Technician.
1. Annual inspection should be made and the following checks per-
formed:
a) With unit cool, remove glass and inspect burner for dirt, soot
and lint accumulations and remove if necessary. If excessive soot
accumulation is present on burner, have a qualified serviceman
adjust burner for proper combustion.
b) Clean any deposits from inside glass with gas fireplace glass cleaner.
NEVER attempt to remove or clean glass when the unit is hot.
c) Check that chimney and its outlet are open and free from soot,
blockage, or debris.
d) Inspect the pilot system for proper flame. See instructions on Page
18.
e) Check the Millivolt system as per Table 4 on Page 18.
f) The appliance area must be kept clear and free of combustible
materials, gasoline and other flammable vapors and liquids.
g) Check glass gaskets once a year. Gaskets must be tight. Replace
if necessary.
2. The viewing glass should be cleaned periodically (see Glass Main-
tenance).
TH
TH
TP
Terminal 1
Terminal 3
TH/TP
TH
Terminal 2
TP
70 80
60
50 90
50 60 70 80 90
OPTIONAL
Thermostat
Thermostat
Thermostat
Wire
Wire
(Red) TH1
19