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Troubleshooting
A Class HP Installation a
nd User Instructions R02583
-6 09/15
Page
35
9.4 Cylinder Attainable Temperature
The heat pump heating system must be
commissioned by a trained installer. Ensuring
correct installation of the system will allow a
water temperature of 60°C to be obtained
inside the cylinder during DHW preparation.
This is true for all cases when ambient
conditions are between -2°C and +25°C. For
other operating conditions, i.e. -2°C < ambient
> 25°C, cylinder temperatures of approximately
55°C can be expected.
The A Class heat pump will be able to achieve
60°C without immersion back up in all of the A
Class cylinders, so long as the flow rate
specified in the instructions is met, the pipes
are insulated and the pipe runs from the heat
pump to the cylinder and back are less than
15m.
10 User Instructions
10.1 General
“This appliance can be used by children
aged from 8 years and above and
persons with reduced physical, sensory
or mental capabilities or lack of
experience and knowledge if they have
been given supervision or instruction
concerning use of the appliance in a
safe way and understand the hazards
involved. Children shall not play with
the appliance. Cleaning and user
maintenance shall not be made by
children without supervision.”
Please read the following statements
carefully as it affects your warranty:
Please ensure that the installer has fully
completed the Benchmark Checklist on the
inside back pages of this document 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 Part G3 (England and Wales), Part
P of Northern Ireland and Section 6 of Scotland.
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 annually 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 will be required in the
event of any warranty work.
10.2 Operation
Once the system has been fully commissioned,
no user intervention should be required to fully
enjoy the comfort and benefits of the unvented
hot water cylinder.
The hot water temperature can be set to
various requirements.
When turning on a hot tap for the first time
after a heat up period there might be a short
surge of water. This is normal in unvented
systems and does not constitute a fault.
Sometimes the water may appear milky – this
is due to very fine air bubbles in the water
which will clear quickly.
10.3 Water Temperature Direct Electric
Heating
The heat pump should be used for production of
DHW. However, if the desired water
temperature is not achieved the immersion
heater will activate.
Before removing the cover from the
immersion heater isolate appliance using
isolating switch! Danger of electrical
shock! Only use suitable electrically
insulated equipment when working inside
immersion housing.
The hot water temperature achieved by the
direct electric heating element can be adjusted
by removing the cover from the immersion
heater and adjusting the dial up or down as
indicated in Figure 18.
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