HAMWORTHY HEATING LTD
MILBORNE 500 SERIES
500001130/A
29
15.0 Commissioning
Hamworthy Heating Ltd strongly recommend that
the Milborne 500 series boiler is commissioned by
our engineers. This will ensure that the boiler is
operating correctly and efficiently. By using
Hamworthy Heating Ltd to commission the
appliance you will also benefit from the full parts and
labour warranty throughout the first twelve months
post commissioning.
Alternatively the Milborne 500 series boiler may be
commissioned by a competent engineer holding
CORGI registration. The warranty in these instances
will be restricted to parts only for the period of 24
months post delivery.
15.1 Pre-commissioning checks
Note:
Before commencing any operations ensure
that the boiler is isolated from both the electrical
supply and the gas supply.
Remove the front cover to gain access to the
internal boiler assemblies. The cover is secured with
2 screw on the underside at the left and right hand
sides. Once the screws have been removed the
cover may be lifted to disengage the retaining clips
at the top and removed. Store the front casing panel
carefully to prevent damage.
Note: Before starting the boiler commissioning
procedure verify the following
15.1.1 Ensure that all external time clock and
thermostatic controls are not demanding that the
boiler commences operation.
15.1.2 Make certain that the boiler is configured for
the type of gas being supplied. Parameter 36 must
be checked and set as necessary. When the boiler
arrives on site parameter 36 is configured for
Natural Gas supply with equivalent flue length less
than 15 metres. If using the boiler with a LPG Gas
supply or equivalent flue lengths greater than 15
metres, parameter 36 must first be modified in
accordance with the table below. Instructions
detailing the procedure for modifying parameters are
given in Section 19.0 of this manual.
15.1.3 Check that the heating system has been
flushed and refilled and that air has been purged
from all high points.
15.1.4 Ensure that the system isolating valves are
in the open position.
15.1.5 Ensure that the water pressure within the
heating system is correct. Minimum pressure
0.5barg.
15.1.6 Ensure that circulating pumps have been
installed correctly and that the pumps are available
for operation.
15.1.7 Ensure that the flue ducts are correctly fitted
and that they are free from obstruction. Check that
the inlet and outlet terminal are located correctly and
in accordance with regulations.
15.1.8 Ensure that the gas supply has been properly
purged and verified for gas soundness. A purge and
soundness certificate should be available from the
gas pipework installation contractor.
15.1.9 Turn on the mains gas supply. Check that
sufficient gas pressure is available at the boiler,
17.5mbar Natural Gas, 37.5mbar LPG. See section
15.2
Parameter 36
Description
Type of Gas
Range 1-7
Default 1
Specification 1=Natural Gas with equivalent
flue length <15m
2=Natural Gas with equivalent
flue length >15m
3=LPG with equivalent flue
length <15m
4=LPG with equivalent flue
length >15m
Gas valve
throttle screw
Gas inlet
pressure test
point
Gas outlet
pressure test
point
Gas Valve
offset
adjustment
Fig 15.1
15.1.10 Ensure that all electrical connections made
to the boiler are correctly sized and installed. Refer
to wiring diagrams in Section 11.0.
15.1.11 Check that the boiler controls wiring has not
been modified. Any modification could lead to boiler
failure.
