Lamborghini Caloreclima GASTER N 51 AW Instrucciones De Uso, Instalación Y Mantenimiento página 76

3. SERVICE AND MAINTENANCE
3.1 Adjustments
All adjustment and conversion operations must be carried out by Qualified Personnel.
The manufacturer declines any responsibility for damage or physical injury caused by unqualified and
unauthorized persons tampering with the device.
Adjusting the burner gas pressure
The GASTER N AW boilers are made to burn natural or liquid gas. The pressure setting and test are
performed in the factory.
However, as there may be changes in supply pressure, at the time of the first ignition it will be neces-
sary to check and perhaps adjust the pressure at the nozzles, observing the values given in the technical
data chart in paragraph 4.3.
The operations for adjusting the pressure are performed with the boiler working, using the pressure
control on the 2-stage gas valves (see Fig. 14).
Preliminary operations:
1 Ignite the boiler and turn the control thermostat knob onto minimum.
2 Connect a pressure gauge to the pressure point on the gas manifold pipe of the burner assembly
(see part 15 in Fig. 24).
3 Take off the cover protecting the pressure regulator 4 (Fig. 14).
Adjusting the minimum power (1st stage)
1 Slowly turn the adjustment thermostat knob clockwise as far as the 1st click; the gas valve will thus
be supplied solely on connections A and B (see Fig. 14).
2 Turn the screw 6 (Fig. 14), checking that the pressure corresponds to the values of the technical data
chart in paragraph 4.3.
Adjusting the maximum power (2nd stage)
1 Turn the adjustment thermostat knob onto maximum; the gas valve will now be supplied on connec-
tions A, B and C (see Fig. 14).
2 Turn the screw 5 (Fig. 14), checking that the pressure corresponds to the values of the technical data
chart in paragraph 4.3.
For model 102 the adjustment operations must be performed uniformly on the two pressure regula-
tors.
The gas pressures measured at the burner gas manifold should be read at least 30 seconds after
making the adjustments, i.e. when the flame has stabilized.
On completing the adjustment operations, turn the burner on and off 2 - 3 times with the adjustment
thermostat and check that the pressure values are the ones you have just set; if this is not so, you need
to make another adjustment to bring the pressures to the right values.
Gas supply conversion
The unit can function with either Natural gas (G20-G25) or liquid gas (G30-G31) and is factory-set for
use with natural gas, as clearly shown on the packing and dataplate. Whenever the unit has to be used
with a different gas, a conversion kit will be required, proceeding as follows:
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cod. 3540P900 - Rev. 01 - 03/2018
GASTER N 51 ÷ 102 AW