Viadrus GRAND G 36, Manual For Operation And Installation

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10.2 Commissioning
The boiler equipped only with network module or an indoor thermostat (working without a superior
regulation):
1. Open the gas closure and the water “closures“ in the heating system.
2. Switch the main switch
3. In case everything is in a good order the lighting burner is lit. The ignition electrode on the lighting burner
in a standard case sparks for 50 sec. By means of the lighting burner there is started a lower output
which max. within 5 seconds is automatically increased to the rated output. If the ignition cycle has run
and the burner hasn’t been lit there lights up the failure signalling on the network module. If repeatedly
the ignition fails it is necessary to switch off the main switch, detect and eliminate the failure and then
repeat the whole process.
4. Check the gas escape.
5. Adjust and regulate the boiler heat output.
6. Stoking test.
Boiler equipped with some of A1 - A4 regulations:
1. Open the gas closure and water “closures” in heating system.
2. Switch on the main switch on boiler panel. Connection of boiler to the electric network is signalled by the
green light.
3. Bring the main switch to the position I (automatic operation).
4. If everything is all right the reduced output is automatically ignited and in case of a superior regulation to
a higher temperature the rated output is ignited. If the ignition cycle has run up without lighting the burner
then the failure signalisation lights up on the automatics. If repeatedly the main burner hasn’t been lit then
the main switch must be switched off, the failure must be found out and eliminated (see chap. no. 15) and
then repeat the whole procedure.
5. Check the gas escape.
6. Adjust and regulate the boiler heat output according to chap. no. 11. For the stoking test bring the
regulator into "chimney sweeper’s" operation. In this regime the boiler is operated with rated output
regardless the regulator setting.
7. Stoking test.
Output adjustment procedure at the boiler designated for natural gas combustion and
equipped with SINGLE STAGE GAS VALVE:
1. Put the boiler into operation.
2. Measure the gas inlet pressure.
3. Connect the manometer (U-tube) to the gas outlet overpressure measuring point on the compact
electromagnetic valve.
4. By using the internal regulation screw adjust the necessary gas overpressure on valve gas pressure
regulator. By turning clockwise the gas overpressure is growing and vice-versa is dropping. The output
can be set according to the customer ´s requirement to the value stated in table no. 2 (every size can be
set within the range between the reduced and rated output).
5. If the adjusted values do not comply with required values repeat the whole procedure.