Technical information

16. Gas Supply
The boiler is set for use with either natural
gas or LPG.
16.1 Gas Supply
Pipe-work from the meter to the boiler
MUST
be of an adequate size.
DO NOT
use pipes of smaller size than the
boiler inlet gas connection.
The gas supply to the boiler must be
capable of maintaining a minimum pressure
of 20 mbar measured at the inlet to the
boiler, with all other gas appliances working.
The installer should install a pressure test
point adjacent to the gas inlet connection.
16.2 LPG Gas Supply
For LPG the gas supply to the boiler must
be capable of maintaining a minimum
pressure of 37 mbar measured at the inlet
to the boiler, with all other gas appliances
working.

The complete installation MUST be
tested for soundness and purged in
accordance with C.P. 331.3

The gas valve fitted to the boiler is not
designed to withstand pressures in excess
of 60 mbar.
When carrying out the pressure test on the
service pipe-work it is essential that the gas
cock fitted to the boiler is in the closed
position, failure to do so will result in serious
damage to the boiler.
All gas service pipe-work from the meter to
the boiler should be either mild steel pipe or
copper.
17. Air Supply
17.1 Concentric Flue
If installed with a concentric flue and as a
room sealed appliance the boiler does not
require that room or internal space to have
a permanent air supply.
17.2 Conventionally Flue
Safe, efficient and trouble-free operation of
conventionally flued gas boilers is vitally
dependant on the provision of an adequate
supply of fresh air to the room in which the
appliance is installed. Ventilation by grilles
communicating directly with the outside air
or a ventilated adjacent room is required.
Where the combustion air is being taken
from an adjoining room the room itself must
be ventilated to satisfy the combustion air
requirement of the appliance. Where the
appliance is to be installed as a
conventionally flued appliance sufficient
combustion air should also be allowed. To
calculate the amount of free combustion air
required for the appliance table 12 should
be used. Permanent openings are based
on the total maximum rated input.
Page 28
ECO HOMETEC
(
UK
)
LTD
.