The Combustion Principle For Gas - Jøtul GF 100 BF2 Instrucciones Para Instalación

7.2 Adjusting high gas pressure
• Always test the high gas pressure with the control knob fully
open and the appliance burning on high.
• If pressure is to be adjusted firstly remove the cover of the
control valve. To do this, firstly undo screw on the top left
hand corner of the valve and unclip at the back.
• Located within the brass dome in the centre of the valve is a
small adjustment screw (fig. 7E).
• By turning this you will see the reading on your manometer
move accordingly and set to the desired pressure as per
instructions. Note adjustments for NG or LPG are different.
• Replace cover on gas valve.
Remember to tighten screw on test point once testing is
complete.
7.3 Setting Low Gas Pressure
• To adjust the low gas pressure have your manometer
connected to testpoint (fig. 7B).
• Turn the front control knob down until the flames are just
about to click off and read the pressure on the manometer
which should correspond to the pressure given in the required
pressure table.
• If the pressure is incorrect, adjust the screw (fig. 7F) on the
bottom of the valve (near the gas tube outlets) until it is as
specified in the table.
Note! The gas pressure differs if the stove is heated or cold.
7.4 Regulating the pilot flame
The pilot flame should have three flames as shown in fig. 8 The
thermocouple should be surrounded by flames (as shown in the
figure 8A). 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.
7.5 Annual service
Annual service of the stove includes the following check points.
• Lighting the pilot flame
• Cleaning the glass.
• The gasket around the glass must be inspected annually for
wear and replaced if necessary.
• Check if the ceramic coals or logs need to be replaced.
• Clean out any debris and soot from the firebox. Soot
could be a result of the ceramic logs/coals not being fitted
correctly in the firebox, or the air regulator has been adjusted
incorrectly.
• Check the gas pressure if other gas equipment is connected
to the gas supply.
• Look for signs of corrosion on the stove and the vent
system.
• Look for obstructions in the vent system (such as bird's nests,
or branches from bushes and trees).
8.0 The combustion
principle for gas
Combustion requires 3 main ingredients: Heat, fuel and oxygen. If
one of the main ingredients is altered, it may result in incomplete
combustion. This basic principle is important to remember in the
trouble-shooting process. Combustion is not possible if one of
the 3 ingredients is missing.
Oxygen blend:
Natural Gas: 10 m oxygen to 1 m
3
Propane/butane: 24 m oxygen to 1 m
3
8.1 Required heat during combustion
Constant flame heat during use of the stove is crucial for
complete combustion. The personnel installing and servicing
the stove must ensure that the ceramic logs are placed correctly
in the firebox and not allowed to drop on to burner holes for
example.
The customer must be made aware of this, if the customer
personally is going to remove and replace the logs/coals.
If the ceramic logs or coals are obstructing the flame too much,
they may attract heat from the flame and consequently lower
the temperature of the flame. This would result in incomplete
combustion, poor flame pattern and increasing values of
carbon monoxide (CO). A high production of CO could lead to
accumulation of soot on the ceramic logs, the glass and on the
exterior of the building.
(See if possible section under Trouble shooting - Problems with
the flame pattern)
8.2 Generation of sparks at the pilot
head
Jøtul GF 100 BF2 is equipped with a spark ignitor. This is a normal
spark ignitor, which is supplied with many current gas products.
The spark generator is operated when the control knob is pushed
in and turned by the ignition position. The spark is conducted
via an insulated wire to the pilot burner, where it is fastened
with ceramic insulation The hot spark jumps from the tip of the
ignitor, called the electrode, to the pilot head and returns to the
ground connection. The hot spark is sufficient to light natural
gas and propane.
The spark ignitor in a
gas stove generates:
Natural gas requires:
Propane/butane require:
ENglish
natural gas
3
propane/butane
3
920°C
620 °C
500-600°C
21