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36
11 Commissioning
11.1 Filling the System
Refer to diagram 11.1
1. Ensure that the fi lling loop is connected to the fi lling con-
nections on the heating system.
2. Open the Central Heating Flow and Return cocks marked
‘1’ and ‘2’ - knob in line with the axis of the cock (shown
open in diagram).
3. The gauge ‘4’ shows the system pressure.
4. Open the fi lling loop to fi ll the heating system to a pressure
of 1.0bar, then close it.
5. Vent all air from the system - repeat step 4 as neccessary
until the system is full and all the air has been removed.
6. After fi lling is complete set the Central Heating temperature
and the Domestic Hot Water temperature to the desired
level. Refer to “Instructions for Use” manual for details.
7. Disconnect the fi lling loop in compliance with the water
regulations.
11.2 Filling Domestic Water Circuit
1. Fully open any valves in the domestic water supply to the
boiler.
2. Open the domestic water isolation valve marked ‘3’ in Dia-
gram 11.1 - knob in line with the axis of the cock (shown
open in diagram).
3. Open all hot water taps in turn and close them when water
fl ows. Check for water soundness of the complete domes-
tic water system.
11.3 Re-pressurising System
1. Ensure that the fi lling loop is connected to the fi lling con-
nections on the heating system.
2. The gauge ‘4’ shows the system pressure. Open the fi lling
loop to fi ll the heating system to a pressure of 1.0bar, then
close it.
3. Vent all air from the system - repeat step 2 as neccessary
until the system is full and all the air has been removed.
4. Disconnect the fi lling loop in compliance with the water
regulations.
11.4 Water fl ow rate
The water fl ow rate is restricted by a restrictor factory fi tted to
the boiler.
Diagram 11.1
1 2 3
4
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