Annual Service - Jøtul GF 373 BF Installation And Operation Instructions Manual

139478_Rev_02 _GF 373 BF
Commissioning
Testing Gas Pressure
Correct gas pressure is important for the safe use of gas in
the appliance. It is important that the correct gas pressure
is set during the installation of the appliance.
The gas valve is equipped with outlets (taps) for the
testing of gas pressure. The outlets are located at the
front of the valve below the ON/OFF/Pilot knob. The out-
lets are marked as shown in fig. 17.
• Outlet D: For gas pressure to the valve (volume of gas
to the valve) See technical data.
• Outlet E: For gas pressure from the valve (volume of
gas coming out of the valve to the burner).
• Regulator - Always test the gas pressure with the valve
regulator knob on High (Hi).
Loosen the screw in the outlet and attach the tube from
the manometer to the outlet. Remember to tighten the
screw when the testing is completed and test for leaks at
the outlets with test fluid.
Required gas pressure from the vent (Outlet E) is displayed
in the table below. (Note that the installer is required to
operate the appliance for at least 20 minutes before mea-
suring the burner pressure.)
GAS TYPE
Natural Gas (G20)
Propane (G37)
Inspection of the Pilot Flame
The pilot flame should have three flames as shown in fig.
18. The center pilot should align with the carry-over ports
on the burner without ember stone interference.
The two thermo-elements should be fully engulfed by the
two other flames as shown in fig. 19.
The flames should be stable and the colour mainly
blue. If you detect a deviation from this, turn off the pilot
flame and call for service.

Annual Service

Annual service of the appliance includes the following
check points.
1. Lighting and inspection of the pilot flame (see the
section - Inspection of the Pilot Flame above);
2. Cleaning the glass;
3. The gasket around the glass must be inspected
annually for wear and replaced if necessary;
4. Check if the textured embers need to be replaced;
14
ON
OFF
STAT
Burner Pressure (Hot), mbar
9.20 mbar
26.7 mbar
Fig. 17. Valve Pressure Tap locations.
ON
D E
Figure 18.
Proper pilot flame /
carry-over
alignment.
Figure 19.
The thermocouple
and thermopile
should be full
engulfed by the
pilot flames.
5. Look for soot. It could be a result of the ceramic logs
not being centred in the stove and completely pushed
onto the metal plate, or the air regulator has been
adjusted incorrectly. (see section xx : Adjusting the
burner);
6. Check the gas pressure if other gas equipment is
connected to the gas supply;
7. Look for signs of corrosion on the appliance and the
vent system;
8. Look for obstructions in the vent system (such as
bird's nests, or branches from bushes and trees).
Regulator