Water Treatment; Starting The Appliance; Switching The Appliance On/Off - Worcester Greenstar FS 30CDi Installation, Commissioning And Servicing Instructions

5.3

Water treatment

NOTICE: Debris from the system can damage the boiler
and reduce efficiency. Failure to comply with the
guidelines for the use of water treatment with the
appliance will invalidate the appliance warranty.
NOTICE:
ARTIFICIALLY SOFTENED WATER MUST NOT BE
USED TO FILL THE CENTRAL HEATING SYSTEM.
ENSURE THAT THE SYSTEM HAS BEEN CLEANED AS ON PAGE 10 OF
THESE INSTRUCTIONS.
FLUSHING (Central Heating):
Switch off the boiler.
Open all radiator valves/drain cocks and drain the system while the
appliance is hot.
Close drain cocks.
Add a suitable flushing agent and refill the system at the correct
strength for the system condition in accordance with the
manufacturer's instructions.
Run the boiler/system at normal operating temperature for the time
stated by the flushing agent manufacturer.
Drain and thoroughly flush the system to remove the flushing agent
and debris.
INHIBITOR (Central Heating):
Check drain cocks are closed and all radiator valves are open before
adding a suitable inhibitor compatible with aluminium (or combined
inhibitor/anti-freeze if the system is exposed to freezing conditions)
to the heating system water in accordance with the manufacturers
instructions.
The pH value of the system water must be less than 8 or
the appliance warranty will be invalidated.
Open vented systems only:
– Turn on the water to the system header tank and allow the system
to fill.
Sealed systems only:
– Fill the system between 1 and 1.5 bar via a WRAS approved filling
loop.
Vent the boiler and all radiators, retighten vents when complete.
Record the date when the inhibitor was added to the system on the
guarantee card.
NOTICE:
The concentration of inhibitor in the system should
be checked every 12 months or sooner if system
content is lost.
The addition of sealing agents to the system water is
not recommended 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.
ErP
Greenstar FS CDi 6720818079 (2016/04)
5.4

Starting the appliance

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Fig. 30 Fascia guide
[1] Master switch for ON/OFF
[2] Display
[3] Fault reset button
[4] Not used
[5] Not used
[6] 230V mains ON/OFF indicator + fault diagnostic light (blue)
[7] Temperature control
[8] Service engineer button
[9] Service menu button
[10] Burner ON indicator light (green)
NOTICE: Never run the appliance when the appliance or
system is empty or unpressurised.
5.4.1

Switching the appliance on/off:

Turn on mains power supply.
Fig. 31 3 Amp fused double pole isolator
Turn on any external controls.
Set the TRV controls to maximum.
Set the clock/programmer to continuously ON and the room
thermostat to maximum temperature.
Press button [1] and the power on indicator [6] illuminates blue.
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3 4
5
2
1 6
max
Fig. 32 Turning on the appliance
Turn the temperature control [7] to maximum. The burner on
indicator [10] illuminates green when the burner has lit.
COMMISSIONING
reset
eco
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6720818979-03.1Wo
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reset
eco
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25