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Maintenance And Service
4. Remove the pilot cover from the pilot
assembly (see Figure 26).
5. Convert the existing pilot orifice using
a 7/16 inch wrench. Loosen the pilot
head, rotate counter clockwise and fully
remove. Remove the existing orifice and
replace with the one supplied in the kit
(Figure 27). Re-install the pilot head
and tighten back to its original position
(Figure 28).
6. Convert the gas valve:
a) Remove the existing stepper motor
using a T-20 screwdriver.
b) Remove the rubber diaphragm and
spring within; do not reuse.
c) Install the new stepper motor with
integrated diaphragm assembly using
longer hardware.
d) Plug new motor into existing wiring harness.
7. Adjust the burner shutter cap to the proper setting (see section
M
s
aIntenance anD
erVIce
page 13).
8. Reinstall burners, log grate, burner media, logs, and glass door
(see M
aIntenance anD
9. Purge any air from gas line and reconnect to unit.
10. Use a small brush and apply a warm soapy water solution to
all gas connections. If a gas leak is present, bubbling will occur. Gas
leaks can be repaired by using a gas approved pipe thread sealant.
WARNING: NEVER USE AN OPEN FLAME WHEN TESTING FOR
GAS LEAKS.
11. Reconnect electrical power to the unit.
12. Light the pilot and recheck for leaks in the aluminum pilot line. If a
leak is evident, contact your Urbana dealer for a pilot line replacement.
WARNING: DO NOT ATTEMPT TO FIX THIS LINE, IT MUST
BE REPLACED IF DAMAGED. The pilot should properly cover the
thermocouple. If adjustment is necessary, turn the adjustment screw in
the valve (see Figure 75) clockwise to decrease and counter-clockwise
to increase until the correct flame is achieved.
13. Start the main burner and verify full range of adjustment using the UP/
DOWN key. Confirm the inlet and manifold gas pressures are within the
acceptable range using a manometer (see I
l
c
Ine
onnectIon anD
altitude higher than 2000ft (610m) it is required to de-rate the unit
accordingly.
18
- B
s
c
urner
hutter
aP
s
section of Owner's Manual).
erVIce
nItIal
t
). If this unit has been installed at an
estInG
Figure 25: Orifice Location
a
on
DjustMent
I
- G
nstallatIon
as
Figure 26: Pilot Shield Removal
Figure 27: Pilot Orifice
Figure 28: Correct Pilot Position
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