Lennox Hearth ELITE VISN-25/35 - Manuel (Page 26)

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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Fuel Conversion
Converting the stove between natural gas (NG) and propane (LP) can be
accomplished by either changing the cassette (valve and pilot assembly)
or installing a conversion kit (regulator, burner orifice and repositioning
the slide orifice of the pilot). Only a qualified service technician should
perform the conversion.
Conversion Kit:
Please see instructions provided with conversion kit.
Cassette Removal
CAUTION: Label all wires prior to disconnection when servic-
ing 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 peuvent entraîner un fonctionnement inadéquat
et dangereux.
1. Be sure the gas supply is shut off. The electrical supply for the blower
should be shut off at the electrical panel before beginning the conver­
sion. Disconnect the gas supply from the stove, being careful not to
apply pressure to the valve in the process.
2. Remove the log set (see “Log Installation”).
3. Remove the two phillips head screws from the back of the burner.
4. Lift the right end of the burner and slide if off the orifice and shutter
tube. Remove the burner from the firebox.
5. Remove the labeled cover through which the valve control knobs
protrude by removing the two screws securing it and slide it off the
valve knobs.
6. Mark and disconnect wires on valve terminals #1 and #3 connected to
the burner on/off switch, thermostat, or remote control. Disconnect
the igniter wire from the control panel.
7. From inside the firebox, remove the two allen head screws that fasten
the log support in and remove the log support piece.
8. From inside the firebox, remove all three of the allen head screws (see
Figures 29 and 30) fastening the cassette to the firebox.
9. Grasp the cassette assembly from below the firebox and lower the
front edge away from the firebox.
10.Install the new, converted, or serviced cassette in the reverse order
of removal. All surfaces of the cassette must be sealed to the firebox
to ensure an air tight seal. Replace damaged gasket.
11.All parts and wires must be correctly reinstalled to ensure safe and
proper operation of the unit.
Figure 29
Figure 30