Pre-commissioning
Ensure that the system has been adequately flushed.
Purge gas supply of air and test for soundness.
Carry out final electrical tests to ensure the correct polarity
and earthing continuity.
DHW
Open the main cold feed valve.
Open all hot taps to purge DHW system.
Check for water soundness.
Check flow rate at the bath tap is set at 11 Itr/min for a 30°C
temperature rise.
Central Heating
u
Fig. 22
Allow pump to run for several minutes.
Open flow and return valves on the boiler.(l8 and 29 Fig
Isolate electrical supply.
22)
Drain boiler and check water filter for installation debris
Open the automatic air vent (6 Fig 23)
Replace filter and recharge system.
Fill system and vent radiators.
Set system pressure and remove filling loop.
Lighting the Boiler
Check for leaks.
Manually check pump is free to turn.
Connect gas pressure gauge to test point ( 43 Fig. 23).
Switch on electrical supply.
Turn on the gas supply and boiler gas tap ( 27 Fig. 22).
Turn selector switch ( 19 Fig 23) to Winter position
Ensure electrical supply is on.
( heating and hot water). ‘1111 c?
Ensure all external controls are calling for heat.
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