Maintenance; Optional Equipment - Jøtul GI 160 BF Installation And Operating Instructions Manual

ENglish
10.5 Thermocouple (fig. 8)
A thermocouple is in principle a thermal generator and consists
of a copper wire (copper-nickel alloy) and an iron wire twisted
together. These wires will generate 25 millivolt when exposed to
a temperature difference of 200°C. This voltage is sufficient to
make the gas valve function.
It is important to understand that even minor resistance (ohm)
will have great impact on such a small voltage. If resistance is too
great, the gas valve may not receive enough voltage to operate.
If there is too much resistance, the cause may be that the copper
wire conducting the voltage is too long, or there are too many
connections. If the copper wire comes in contact with metal, it
may increase resistance and consequently reduce the voltage.
10.6 When the pilot goes out – but the
gas supply is OK
This is the trouble-shooting procedure for the
thermocouple:
• Check the copper wire of the thermocouple for cracks or
damage.
• Check the gasket at the valve by loosening the nut that
holds the copper wire. Look for signs of damage, if the nut
has been tightened too hard. A damaged gasket involves a
lot of resistance at contact with metal and consequently the
voltage to the valve will be too small.
• Make sure the flame is centred at the thermocouple.
• Make sure the thermocouple is enveloped by the flame up to
at least 3 mm from the tip (fig. 8).
• Check the voltage generated by the thermocouple. Connect
the multimeter (fig.11-E) with plus to the ball point (fig. 11-D)
at the end of the copper wire. Connect minus to the copper
wire.
• Light the pilot (fig. 9) and hold in the control knob to prevent
the flame on the pilot burner from going out.
• At this point the multimeter should show 14-28 mV.
If it is the beginning of a new heating season and the gas insert
has not been used, a coating may appear on the tip of the
thermocouple. This coating can be removed with fine grinding
paper. Use a spanner when replacing the thermocouple. The
nut on the thermocouple must not be tightened too much, just
a half turn.
10.7 Problems with the flame pattern
The gas insert is factory pre-set. Should problems with the flame
pattern occur, the log set/coal set must be disassembled and
checked. Check if the air regulator is mounted correctly. (See the
instructions manual for the conversion set.)
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11.0 Maintenance

Owner/user is responsible for the complete gas installation. The
installation must be inspected annually and must be carried out
by proved qualified service personnel.
11.1 External maintenance
Painted products may change color after some years of usage. The
surface should be cleaned and brushed free of any loose particles
before new stove paint is applied.
Enamelled products must only be cleaned with a dry cloth. Do not
use water or soap. Stains can be removed with an appropriate
cleaning agent (oven cleaner etc.).

12.0 Optional equipment

Remote control
Soap stone surround
Installing optional equipment for the
flue vent Ø100/170 mm
The following vent accessories are available to order:
1. Cover plate around pipe against wall.
2. Wall shield adjustable for wall thickness of 200-350 mm.
3. Telescopic pipe length 400-700 mm.
4. Straight pipe length 750 mm
5. Straight pipe length 500 mm
6. 90° Bend
7. Locking
8. Wall bracket