24 of 49
Commissioning
Flue gas quantities and adjustment
Flue gas measurement and
adjustment
Combustion settings need to be set
with the boiler in commissioning mode
(via Flue Cleaner button (8)), setting
the boiler at Maximum load / Minimum
load and making adjustments at the
gas valves Max Output and MinM
output as required. (Ref P24 & 25)
When in the commissioning mode the
3-way valve (Combi Only) is diverted
to heating mode, the temperature limit
values of the boiler are disabled and
only the maximum safety temperature
remains activated (Q5°C)
Whilst in commissioning mode to put
Boiler at max output turn Service
Water adjustment (11) fully clockwise,
to put boiler into minm output trun
service water adjustment (11) fully
anti-clockwise
If an HG model boiler (heating
operation only) is used with underfloor
heating, interrupt the operation of the
boiler if the temperature exceeds
45°C. Resume operation after the
boiler has cooled.
Access for Analyser Readings
First unscrew the locking screw (1)
between the flue gas test points.
The test point plugs (E= emission, A=
intake air) can be removed with a 90°
anti-clockwise turn (bayonet closure).
Place the analyser Sensor into the
appropriate Test point for measurment.
Flue gas measurement is carried out in
heat mode. Analyser sensor to go in
approx 75mm for Emission checking.
On a Combi If system load is difficult to
achieve, for example during the summer,
the hot water circuit can also be used as
follows:
With the aid of a screwdriver
disconnect the fixing clamps, 3, of
the motor, 4, of the 3-way valve.
Steady the motor with your hand
meanwhile detach the motor, open
one or more hot water taps to let off
the heat generated during the
measurement of the heating
appliance and carry out the
measurement.
When measuring is completed, shut the
taps again, attach the motor, push it
down and replace the fixing clamps.