Benchmark; Operation; General - Heatrae Sadia 7037042 Installation, Operation And Maintenance Manual

WARNING
If the appliance is to be left unused
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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,
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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.
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8. Operation

8.1 General

WARNING
If water
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temperature/pressure relief valve 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
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valves fitted to the system. If a fault
is suspected contact a competent
installer.
DO NOT bypass the thermal cut-out in
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any circumstances.
The appliance stores water at the temperature set
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on the adjustable control knob. This can be set
to give temperatures in the range 10°C to 70°C.
The factory set temperature is set at 54°C and is
indicated by aligning the arrow on the adjustment
knob with the arrow on the cover. Turn the
adjustment knob towards the wider red band to set
hotter, towards the blue band to set cooler.
COLD
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
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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
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its optimum performance it should be periodically
maintained in accordance with the instructions
given under the section headed MAINTENANCE.
discharges from the
HOT
o
55 C can scald so