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If the setting is lower than the ambient temperature, the burner will extinguish. At a setting higher
EN
than the ambient temperature, the burner should ignite.
4.4 Check the pre-pressure
The gas pre-pressure must be measured at the gas unit when the appliance is in operation. The pre-
pressure is indicated on the appliance's type plate. To check, the volume of gas consumed [3] can be
measured via the gas meter (temporarily switch off all other appliances that consume gas).
4.5 Check appliance operation.
Finally, check that the operation of the appliance cannot be influenced by other appliances close to
it, localised air flows or corrosive or explosive vapours, etc.
4.6 Set the gas control unit [6]
Before being packed, each appliance is fully tested for safety and correct operation. The correct
combustion values are set during this procedure. If checks indicate that the CO
value is different
2
from that in table [3], adjustments may be made (difference of more than 0.2%). Never adjust set
screws without the correct measuring equipment.
Legend [6]
1 Measuring point for gas pre-pressure
2 Measuring point for offset
3 Offset adjustment screw
4 Throttle adjustment screw
Step 1
Set the appliance to run at full operational load by pressing and holding the reset button of the unit
for at least 5 seconds. The fault lamp in the reset button flashes at a high frequency. If the appliance
will not fire up, you can try sealing the air opening in the gas mixer during ignition using your thumb
and index finger. This makes the mixture richer and easier to ignite. Check the CO
when the
2
appliance is operating at high output. If the CO
is too high, turn the throttle adjuster to the right
2
(less gas). If the CO
is too low, turn the screw to the left (more gas). The correct CO
value is
2
2
shown in table [3] (D1).
Step 2
Set the appliance to minimum load by shortly pressing the reset button of the unit. The fault lamp
against the value in table [3] (D2). If
in the reset button flashes at a low frequency. Check the CO
2
different, correct by turning the offset adjuster under the cap. To the left for lower CO
, to the right
2
for higher CO
.
2
After setting the gas control unit press the reset button again (the light goes out).
4.7 Shutting down the heater
For short periods of time:
– Set the room thermostat to the minimum temperature.
– Do not switch off the electricity supply at the main switch as this may damage the maximum
temperature and safety thermostat.
For longer periods of time:
– Set the room thermostat to the minimum temperature.
– After ± 5 minutes, the electrical power may be switched off.
5.0 Maintenance
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