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24VF Gas Fireplace
Part No. XG0138
Horizon
Maintenance
Gas Control Valve
Figure 11.
SIT NOVA 630.570 for LP
.
Pilot Burner Adjustment
1.
Locate Pilot Adjustment Screw.
(See figure 11.)
2.
Adjust pilot screw to provide properly sized flame as shown in
figure 12).
3.
After installing or servicing, leak test with a soap solution with
main burner on. Coat pipe and tubing joints, gasket etc. with soap
solution. Bubbles indicate leaks. Tighten any areas where the
bubbles appear until the bubbling stops completely.
Figure 12.
Pilot Burner
WARNING:
Do not use a blower insert or heat exchanger insert, it is
not approved for use with this fireplace.
Avoid any drafts
that alter burner flame patterns.
Do not use accessories not approved for use with this heater.
Cleaning the Oxygen
Depletion Sensor (ODS)
The most common problem with the vent-free fireplace is a dirty
ODS.The symptoms of a dirty ODS can be any of the following:
A. Pilot will not stay lit.
B. Stove runs for a little while and goes out completely, including
pilot.
The cleaning process is a very simple procedure. You will need
a can of compressed air (as used for cleaning computers). This
is available at hardware and computer stores, and is sometimes
labelled as a "duster". Do NOT use an air compressor, as the air
from a compressor usually contains oil. The correct product usu
-
ally has a small straw that connects to the can to aim the air.
Cleaning the ODS Sensor
(Must be performed by a certified gas technician):
1. Locate the pilot assembly on your stove.
2. Turn on the gas valve on the stove to the off position and let the
stove cool down.
3. Locate the ODS intake hole (as shown below) and blow the hole
out. Use several blasts of the air to get all the dust. (Note: the as
-
sembly shown below is an LP assembly. The natural gas version
has some minor differences)
4. Your stove should now operate normally.
5. If it does not, in some extreme cases, the ODS can be so clogged
that it is necessary to disconnect the gas supply leading to the
pilot tube. You must use one 7/16" wrench to hold the ODS and
another to remove the nut. (see below) Blow into the tube from
the nut end. If you are required to do this, you must leak test the
nut after reconnecting by using a 50/50 solution of dish soap and
water around the nut area. If you see bubbles when holding the
pilot button depressed, tighten the nut.
6.
NEVER insert any objects into either the flame hole or intake
hole.
The ODS is a precision instrument and if damaged, will not
