COMMISSIONING
6 720 804 532 (2012/09)
31
▶ Re-pressurise if necessary to 1bar.
▶ Set all controls to maximum.
▶ Record the date when the inhibitor was added to the system on the
warrantee card.
WATER TREATMENT PRODUCTS
Suitable water treatment products can be obtain from the following
manufacturers:
5.4
STARTING THE APPLIANCE
Fig. 64 Control panel
Switching the appliance on/off:
▶ Turn on mains power supply, the power on indicator (5) illuminates
BLUE.
▶ Turn on any external controls
▶ Set the thermostatic radiator controls to maximum temperature
▶ Set the clock/programmer to continuously ON and the room
thermostat to maximum temperature
Turn the boiler CH temperature control (1) to maximum. The burner on
indicator (2) illuminates GREEN when the burner has lit.
If the boiler fails to light, the BLUE power indicator (5) and reset button
(7) will flash.
To reset press and hold the reset button (7) for more than two seconds.
The boiler will be reset.
5.5
COMMISSIONING
Having checked:
▶ That the boiler has been installed in accordance with the installation
instructions.
▶ The integrity of the flue system and flue seals, as described in
section 6.3 of this manual.
▶ The integrity of the boiler combustion circuit and relevant seals.
5.5.1
CHECKING THE GAS INLET PRESSURE
The inlet pressure to the appliance must be checked using the following
procedure:
MEASURING THE INLET PRESSURE
Fig. 65 Inlet pressure test point
▶ Close gas isolation valve.
▶ Slacken the screw in the inlet pressure test point (1) and connect a
manometer.
▶ Open gas isolation valve.
▶ Measure the pressure with the boiler running at maximum.
– Press service button for more than ten seconds and set Central
Heating temperature to maximum.
– The service button will illuminate continually and the blue power
indicator will pulse five times.
▶ Check the gas supply working pressure at the gas valve conforms to
values shown in Fig. 66 or Fig. 67 .
NOTICE:
▶ The concentration of inhibitor in the system should be
checked every 12 months or sooner if content is lost.
▶ Normally the addition of sealing agents to the system
water is not permitted as this can cause problems
with deposits left in the heat exchanger.
▶ In cases where all attempts to find a micro leak have
failed, Worcester, Bosch Group supports the use of
Fernox F4 leak sealer.
FERNOX
0870 601 5000 - or - www.fernox.com
SENTINEL
0800 389 4670 - or - www.sentinel-solutions.net
CAUTION:
RUNNING THE APPLIANCE
▶ Never run the appliance when the appliance/system is
empty or partially filled.
1
Central heating temperature control
2
Burner indicator (Green)
3
Service button
4
Cover or optional Programmer
5
Power ON and fault indicator (Blue)
6
ECO button - Not used
7
Reset button
8
DHW temperature control
9
System pressure gauge
Table 18 Control panel legend
1
2
3
4
5
6
7
8
9
6720643895-52.2Wo
NOTICE:
RESET
▶ Do not press the blue power indicator (5) to reset the
boiler.
NOTICE:
The combustion settings on this gas-fired boiler
have been checked, adjusted and preset at the factory
for operation on the gas type defined on the data plate.
No measurement of the combustion values is necessary
provided there is a meter installed allowing the gas rate to
be checked.
DO NOT ADJUST THE AIR/GAS RATIO VALVE.
When running in the service mode, the boiler will operate
both the central heating and the domestic hot water
circuits. This is to allow sufficient time for this part of the
commissioning procedure. It will be necessary to run
water through the domestic hot water circuit to ensure
that the boiler will not cycle on low heating demands.
1