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2
INSTRUCTIONS FOR USE
2.1
Warnings
Biasi Uk Ltd support the Benchmark
initiative. The Benchmark Checklist is
located at the back of this manual and
should be completed by the Installing/
Commissioning Engineer and handed
over to the User for future reference by
other visiting Engineers. Also included
is the Service Interval Record card that
should be completed by the Service
Engineer following the annual service
maintenance of the boiler and system.
All Gas Safe Registered Installers carry a
Gas Safe ID card, and have a registration
number. Both should be recorded in your
Benchmark Checklist. You can check
your Installer is registered by calling Gas
Safe direct on 0800 408 5500, or go on
line at www.GasSafeRegister.co.uk.
In order to guarantee safety and correct op-
eration, it is essential that all the tests are
carried out by a competent and responsible
service engineer before lighting up the boiler.
The tests are described in the installation
instructions in section 7 commissioning.
Ensure that the c.h. circuit is regularly filled
with water (even if the boiler is only used for
d.h.w. supply) checking that the pressure
indicated on pressure gauge 4 is not lower
than that shown in Fig. 2.2.
If the pressure reading on the pressure
gauge is below that shown in Fig. 2.2, then
the system will require topping up. A filling
loop is normally provided by the Installer for
this purpose.
If you are in any doubt regarding this
procedure you are advised to contact
your Installer or an Approved Engineer.
- 10 -
INSTRUCTIONS FOR USE
This appliance is provided with a built in
anti-freeze system that operates the boiler
when the temperature is below 5 °C.
Therefore, when the boiler is not lit or used
in cold weather, with consequent risk of
freezing do not switch off the boiler at the
fused spur isolation switch or close the
gas inlet cock.
When you do not expect to use the boiler
for a long period and the boiler is not to be
used for frost protection then follow the in-
structions given in section "Extinguishing"
to page 13.
2.2
Refilling procedure
• Isolate the boiler from the electrical sup-
ply at the fused spur. Reconnect the filling
loop as demonstrated in Fig. 2.1.
Supply pipe
(cold water
inlet)
C.h. return pipe
Fig. 2.1
• Open the valves of the filling loop and
watch the gauge until it reaches normal
filling pressure as shown in Fig. 2.2.
Fig. 2.2
Control
valve
Double
check valve
Temporary
connection
Control valve
4
Normal
filling
pressure
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