Condensing Boiler
4
7/5/99
Where a room sealed appliance is installed in
a room containing a bath or shower then the
appliance and any electrical switch or
appliance control, utilising mains electricity
should be so situated that it cannot be touched
by a person using the bath or shower.
Where installation will be in an unusual
location then special procedures may be
necessary and BS.6798 gives detailed
guidance on this aspect.
A compartment used to enclose the boiler
MUST be designed and constructed specially
for this purpose. An existing cupboard, or
compartment, may be used provided it is
modified for the purpose. Details of essential
features of cupboard compartment design,
including airing cupboard installations are
given in BS.6798.
In siting the boiler, the following limitations
MUST be observed:
1. The position selected for installation MUST
allow adequate space for servicing in front of
the boiler and for air circulation around the
boiler.
2. This position MUST also permit the provision
of a satisfactory balanced flue termination.
3. This position MUST also permit the provision
of a satisfactory connections to the condensate
drain.
GAS SUPPLY
The Local Gas Region should be consulted, at
the installation planning stage, in order to
establish the availability of an adequate supply
of gas.
An existing service pipe must NOT be used
without prior consultation with the Local Gas
Region, or by a local Gas region contractor. An
existing meter should be checked preferably by
the Gas region, to ensure that the meter is
adequate to deal with the rate of gas supply
required.
Installation pipes should be fitted in
accordance with BS.6891: 1988.
Do NOT use pipes of a smaller size than the
boiler inlet gas connection.
FLUEING
Detailed recommendations for flueing are given
in BS.5440: 1.
The following notes are intended for general
guidance.
1. Be aware of the plume from the flue and the
wetting effect it has to adjacent property.
2. The flue can be taken to the left, right or rear
of the appliance.
3. The boiler is provided with standard flue kit
that will reach 500mm (20 in). An extended flue
kit is available which enables the flue to be
extended straight to 2000mm (79 in), Part No
7721). The air duct must be supported every
700mm (30 in) with the clips provided.
4. The boiler MUST be installed so that the
terminal is exposed to external air.
5. It is important that the terminal allows the
free passage of air across it at all times.
6. The acceptable spacing from the terminal to
obstructions and ventilation openings are
specified in Table 1.
7. Where the lowest part of the terminal is
fitted less than 2m (6.6ft.) above a balcony,
above ground, or above a flat roof to which
people have access then the terminal MUST
be protected by a purpose designed guard.
Terminal guard Model K3 6.5 x 11 (plastic
coated) (GC No 393554) is available from:-
Tower Flue Components Ltd.
Tower House.
Vale Rise.
Tonbridge
KENT
TN9 1TB
0732 351555