Battery Installation - Jøtul GF 373 BF Installation And Operation Instructions Manual

Commissioning

Battery Installation

The TESC valve requires three, AA alkaline batteries
be installed within the central battery compartment.
The batteries supplied were used to test the valve and
burner functions at the factory, however, these have
been removed before shipping. Note the proper battery
orientation as molded into the battery compartment.
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 plumbing assembly is equipped with outlets
(taps) for the testing of gas pressure. See figs. 12, 28, and
the identification list below.
• Supply Inlet A: For supply pressure to the valve (volume
of gas to the valve) see Technical Data, pg. 4. Access to
the tap is from the rear.
• Manifold Outlet B: Access is from the left side as you
face the stove. Test the gas pressure with the valve
flame regulator set to the highest level.
Loosen the screw in the tap 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 each
location with test fluid or a digital detector.
Required gas pressure from the vent (Outlet B) is
displayed in the table below. (Note that the installer is
required to operate the appliance for at least 20 minutes
before measuring the burner pressure.)
Supply Pressure
Gas Type
Natural Gas
G20
G20DG25
G25
G31
Burner Pressure
(Hot) mbar
mbar
(±1.0mbar)
20 9.4
20D25 9.4D11.8
25 11.8
LPG
37 25.3
Inspection of the Pilot Flame
The pilot assembly flame should have two flames as
shown in fig. 13. The rear flame should fully engulf the
thermo-element that controls gas flow through the valve.
The forward flame ignites the burner. Each flame should
project out approximately 30 mm and be unobstructed.
The flames should be stable and the colour mainly
blue. Call for service if any of these characteristics are
evident:
• weak, lifting, or wandering flame
• yellow or dirty flame
Adjust the Flame Picture
The air shutter has been factory-set in the position
appropriate for either propane or natural gas and
normally will not require any adjustment. The air volume,
however, may be tailored to accommodate variables
inherent in individual installations.
Any adjustment of the air shutter must be performed
only by a qualified gas technician.
Allow the burner to operate at the High power
setting (Level 7) for 15-20 minutes before proceeding with
any adjustment.
The shutter adjustment stem is located under the
firebox floor. See fig. 15. Loosen the wing nut to permit
the shutter stem to slide forward (toward yourself) or
backward.
Forward adjustment (to stove front) opens the
shutter for greater air/fuel mix and results in a lighter,
bluish flame picture.
Backward adjustment reduces air volume and results
in taller, more yellowish flames. Soot development on
logs or walls indicates poor combustion and the need to
increase the air supply.
Place a hash mark at the final location for future
reference and tighten the wing nut securely. Record this
adjustment in the Service Record section of this manual.
139807_R4 GF 373 BF CE 7/17
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