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▶ Appliance not in use
– If the appliance is not going to be used immediately and may be
exposed to freezing conditions, advise the customer of the
precautions necessary to prevent damage to the appliance,
system and building.
– If the appliance is unused and exposed to freezing conditions,
safely isolate all the mains supplies and drain the system and
appliance, label accordingly.
▶ Show the customer the location of the condensate pipe run in
unheated or external areas that may be at risk of freezing during
prolonged cold spells.
▶ User recommendation:
– Advise the user to have the appliance and heating system
thoroughly serviced annually by a competent, registered gas
engineer, such as a Gas Safe registered engineer or British Gas
engineer. In the Republic of Ireland servicing work must be carried
out by a Registered Gas Installer (RGII).
– Present, where relevant, maintenance aids and reminders within
the appliance menus.
– Arrange an inspection/maintenance contract with an approved
heating contractor.
Handover tool
To assist your customer with the handover of the
boiler, including how to use its key features,
please scan this QR code.
QR code scanning apps are available for free on
all platforms.
CH control set point temperature set above the factory default of
65 °C.
If the factory default CH temperature has been adjusted.
▶ Note the change of temperature in the Benchmark Gas Boiler
Commissioning Checklist.
▶ Inform the customer that the factory default CH temperature has
been adjusted above 65 °C and if a thermostatic mixing valve (TMV)
at the point of use (e.g. before the bath hot tap or shower) to protect
vulnerable people from scalding has been fitted.
6.11.2 Appliance/product guarantee
This appliance/product has a guarantee against faulty materials or
workmanship for a period from the date of installation subject to the
terms and conditions.
For full terms and conditions, please visit:
www.worcester-bosch.co.uk/guarantee-terms-and-conditions
Guarantee registration
Your appliance/product carries a guarantee against faulty material or
manufacture subject to Terms and Conditions.
To read the full Terms & Conditions please visit us on-line at
www.worcester-bosch.co.uk/guarantee.
Your statutory rights are not affected by the manufacturer's guarantee
48
7
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7.1
Setting frost protection
NOTICE
Risk of damage to the system from frost!
The heating system can freeze up after a prolonged period (e.g. during a
power failure, switching off the power supply, faulty fuel supply, fault
etc.).
▶ Ensure that the heating system is in constant use (particularly when
there is a risk of frost).
Frost protection for the heating system:
Always follow the latest advice in BS7593 for system frost protection.
Frost protection for the heating system is only ensured if the pump is
operational and is pumping heating water through the entire system.
▶ Leave the heating switched on.
▶ Set the time control to constant ON and set the room thermostat to
12 °C.
-or- If you want to leave the appliance switched off:
▶ Mix Worcester-approved anti-freeze into the heating water (
"Water treatment products", page 31) and drain the DHW circuit.
For further information, see the heating controller operating
instructions.
Appliance frost protection:
The appliance frost protection function switches the burner and heating
pump on when the appliance temperature falls below 5 °C. This prevents
the appliance from freezing.
7.2
Anti-seize protection
This function prevents the pump and the diverter valve seizing up
following long periods of inactivity.
The anti-seizing function remains active during standby mode.
The pump is briefly activated automatically after 24 hours of inactivity.
Greenstar 1000 – 6721835943 (2023/08)
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