Ambirad DR 120 Informazioni per l'utente, istruzioni per l'installazione e la manutenzione - Pagina 7

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PRE-COMMISSIONING CHECK

Inspect ceramic plaques to ensure that none have been damaged. If any cracks are detected, the heater must not
be commissioned until the affected burner unit has been replaced (See Servicing Section).
COMMISSIONING
1)
Ensure that service cock to heater is turned off.
2)
Purge air from gas supply and test for gas soundness in accordance with the relevant standards.
(see page 4)
3)
Check that all electrical connections are made to the heater and that the unit has a sound earth connection.
4)
Remove operating pressure test point screw (located on outlet of the gas valve.). Connect pressure gauge.
Connect pressure guage here to
check heater operating pressure
5)
Open the gas service cock.
6)
Switch on the power to the heater via remote electrical switch. After a purge period lasting a few seconds,
the solenoid valves will open and the heater will come into operation having been lit by the electrical spark.
7)
Check heater operating gas pressure. This should be:
15 mbar for natural gas or 25 mbar for propane.
The pressure governor on the gas valve has been factory pre-set to the correct operating pressure. If the
correct operating pressure is not measured then it may be necessary to re-adjust this. Please see page 12 for
details of how this is done.
When the correct pressure is measured, switch off the heater. Remove pressure guage. Replace and
tighten test point screw.
8)
Test supply between service cock and heater for gas soundness.
9)
Fit low level lighting instruction plate.
The heater is now ready for use.
Connect pressure guage
here to check inlet gas
pressure
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