Lennox Hearth EPIC40 - Manual (Page 26)

6 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
servicing controls. Wiring errors can cause improper
and dangerous operation. Verify proper operation after
servicing.
1. Be sure the gas supply is shut off. The electrical supply for
the blower should be unplugged from both the wall and
the Epic™ gas stove before beginning the conversion.
2. Disconnect back of pedestal by removing the four button
head cap screws securing it, slide back far enough to label
and disconnect wires from the AC inlet plug. Remove the
white remote thermostat plug. Completely remove back
of pedestal from the Epic gas stove.
3. Disconnect the gas supply from the stove, being careful
not to apply pressure to the valve in the process.
4. Remove socket head cap screw securing the bottom of
the right side door, open, label and remove the wires
leading to the snap switch.
5. Remove the control panel containing the On/Off switch
by removing the four socket head cap screws securing
it. Pull the control panel out far enough to remove the
orange piezo igniter wire. Detach the two black wires
from the back of the On/Off switch, disconnect the fan
control wires and completely remove the control panel.
Remove the knob extensions from the valve controls.
6. Remove the log set and brick panels (see Brick Panel,
Log Set and Ember Installation).
7. Remove the two screws from the back of the burner. Lift
the left end of the burner and slide if off the orifice and
shutter tube. Remove the burner from the firebox.
8. From inside the firebox, remove the right side burner
support. Then remove the seven socket head cap screws
holding the cassette in place.
9. From inside the pedestal remove the four 3/8” nuts hold-
ing the back of the control panel.
Cassette Screws
Blower Removal
10. Mark and unplug the remaining fan wire. Remove the
three screws securing the fan and set aside.
11. Remove the cassette assembly by carefully pulling the
top cassette plate downward, guiding the pilot assembly
out of the firebox, down into the pedestal area. Once
the pilot assembly is clear of the firebox, remove the
cassette from the pedestal.
12. 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.
The old gasket must be replaced with a new gasket.
13. All parts and wires must be correctly reinstalled to
ensure safe and proper operation of the unit.
Figure 36
Figure 37