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WARNING
If the appliance is to be left unused
`
following installation and commissioning
e.g. unocupied properties, the appliance
should be drained or regularly flushed
through with fresh mains water once a
week.
When placing the appliance into service,
`
the procedure for filling the appliance
and the system checks detailed above
should be carried out.
7.4 Benchmark
The appliance is covered by the Benchmark Scheme
which aims to improve the standards of installation
and commissioning of domestic heating and hot water
systems in the UK and to encourage regular servicing
to optimise safety, efficiency and performance.
Benchmark is managed and promoted by the Heating
and Hotwater Industry Council. For more information
visit www.centralheating.co.uk.
Please ensure that the installer has fully completed the
Benchmark Checklist (see page 34) of this manual and
that you have signed it to say that you have received a
full and clear explanation of its operation. The installer is
legally required to complete a commissioning checklist
as a means of complying with the appropriate Building
Regulations (England & Wales).
All installations must be notified to Local Area Building
Control either directly or through a Competent
Persons Scheme. A Building Regulations Compliance
Certificate will then be issued to the customer who
should, on receipt, write the Notification Number on the
Benchmark Checklist.
This product should be serviced regularly to optimise
its safety, efficiency and performance. The service
engineer should complete the relevant Service Record
on the Benchmark Checklist after each service. The
Benchmark Checklist may be required in the event of
any warranty work.
16
8. Operation
8.1 General
WARNING
If
water
`
Temperature/Pressure
on the appliance, turn the appliance
off. DO NOT turn off any water supply.
Contact a competent installer for
unvented water heaters to check the
system.
DO NOT tamper with any of the safety
`
valves fitted to the system. If a fault
is suspected contact a competent
installer.
DO NOT bypass the thermal cut-out in
`
any circumstances.
The appliance stores water at the temperature set
`
on the internal adjustable thermostat. This can be
set to give temperatures in the range 10°C to 70°C.
The factory set temperature is set at 54°C.
The temperature control is underneath the cover,
`
please see figure 10, page 18 on how to remove.
Turn the adjustment knob clockwise to set hotter,
`
or counterclockwise to set cooler.
Figure 8: Temperature control
In hard water areas it is advised that the maximum
`
temperature is restricted to prevent build up of
scale.
Temperatures
above
`
consideration should be given to blending at the
point of use to a safe user temperature.
To avoid risk of freezing when the heater is not
`
in use for long periods during the winter months,
do not switch off the electrical supply and set the
thermostat to its minimum position. N.B. This will
not protect other system pipework.
The indicator light will be illuminated when the
`
appliance is heating.
To ensure the appliance continues to operate at
`
its optimum performance it should be periodically
maintained in accordance with the instructions
given under the section headed MAINTENANCE.
discharges
from
the
Relief
valve
o
55
C
can
scald
so
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