Commissioning Procedure; De-Aeration Function; Gas Settings; Check The Operational (Working Gas Inlet Pressure And Gas Rate) - Baxi Assure Combi 36 LPG Installation And Service Manual

7 Commissioning
7.3

Commissioning procedure

Fig.41 Setting de-aeration
Reset
x 2
7.4

Gas settings

Fig.42 Gas meter to valve
17-21 mbar
48
R
2
1
3
0 4
bar
R
R
PN-0000360
A
18-22 mbar
19-23 mbar
PN-0000361
7.3.1

De-Aeration function

Before turning on the power to the boiler, rotate the CH control knob (
fully anticlockwise.
The purpose of the function is to remove as much air as possible from the
heating system. To assist this it is essential that all precautions are taken
to remove air manually before enabling the function. Ensure that all radia­
tors are fully bled, starting on the lowest floor in properties of more than
one storey. Any high points in the system should be fitted with a suitable
venting device. On the boiler's first power up de-aeration lasts approxi­
mately 7 minutes. The boiler will not operate during this process.
1. Turn on the power to the boiler. The display shows "000" .
2. Turn the CH control knob (
sion (within 2 seconds).
3. Display shows "312" while de-aeration is taking place (approximately
7 minutes).
4. When de-aeration has completed, the display will show the primary
flow temperature and both the CH (
Important
If during the first commissioning process the power to the boiler is
interrupted the de-aeration function will re-start automatically at
the point which it stopped once power is restored.
Caution
If the system is drained in the future (even partly, when replacing
a radiator for example) the de-aeration function must be repeated.
Also the inhibitor concentration must be checked and replenished
if necessary.
7.4.1 Check the operational (working gas inlet pressure and
gas rate)
Note
If the pressure drops are greater than shown in the diagram oppo­
site, a problem with the pipework or connections is indicated. Per­
missible pressure drop across system pipework ≤ 1mbar. Carry
out chimney sweep.
See
Checking combustion - chimney sweep mode, page 49.
1
) / turn clockwise twice in quick succes­
4
) and DHW ( ) symbols.
)