Gas Connection / Electrical Connection - Potterton Eurocondense Plus Installation Manual

GAS CONNECTION / ELECTRICAL CONNECTION

Boiler siting and base
Gas supply
Adjustment by the factory
Supply pressure
CO content
2
6
A level non-combustible floor capable of supporting the weight of the
boiler filled with water, see Table 11, together with any additional weight
bearing down on the base from connections, etc. must be provided. This
will typically be a 50mm concrete plinth with an area equal to that plan of
the boiler.
It is not recommended to install commercial boilers in kitchens or living
areas.
Where there is an existing primary gas meter, the appropriate gas
supplier/undertaking must be consulted to ensure that the service/meter
supply capacity is adequate for the proposed installation.
The burner gas connection sizes are given in Fig. 1.
The gas supply pipe should be sized to allow the minimum operating
pressure to be available at the burner inlet under full running conditions.
The pipe should be sized to prevent excessive pressure drops under full
running conditions.
Where gas boosters are required attention is drawn to the Gas Act 1986,
Schedule 5, Part II, paragraph 8 (4). Guidance is given in IM/16 "Guidance
Notes on the Installation of Gas Pipework, Boosters and Compressors in
Customers Premises" published by British Gas Plc. The gas booster should
be electrically interlocked to the burner.
The boiler is adjusted by the factory to a maximum nominal heat load and
for use with natural gas (G20) or with LPG (G31). See boiler data badge
for details.
The supply pressure of natural gas must be between the following:
– Natural gas (G20): min 17.5 / max 25 mbar
– LPG (G31): min 42.5 / max 57.5 mbar
The supply pressure is measured on the gas valve inlet (see Fig 13).
If the supply pressures are outside this range, the boiler must not be put
into operation. The gas utility company must be informed.
When commissioning and during regular servicing of the boiler as well as
after any conversion work on the boiler or the flue system, the CO
flue must be checked.
When running on natural gas, the CO
and 8.5%.
When running on LPG (propane), the CO
9.5 and 10.0% (EC PLUS 90, 120)
9.0 and 9.5% (EC PLUS 160, 200, 250).
Too low CO values may cause ignition problems. Too high CO
2
can lead to incorrect combustion (high CO values) and damage to the
burner. The CO value is adjusted by setting the gas pressure on the gas
2
valve (see Page 10–12). The air volume set at the factory must not be
changed.
content must be between 8%
2
content must be between
2
in the
2
values
2