Malvern tentwenty Installation & Service Instructions Manual Download Page 4

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IMPORTANT.

It is important that no external

control devices are directly connected to this appli-
ance - unless covered by these ‘Installation and
Servicing Instructions’ or otherwise recommended
by the manufacturer. If in doubt, please enquire.

Any direct connection of a control device not
recommended by the manufacturer could infringe
the Gas Safety (Installation & Use) Regulations, the
above regulations and the normal appliance war-
ranty.

Manufacturer’s notes must NOT be taken, in any
way, as overriding statutory obligations.

Location of Boiler

The boiler MUST be installed on a flat and vertical
non-combustible wall, capable of adequately sup-
porting the weight of the boiler and any ancillary
equipment.

THE BOILER IS NOT SUITABLE FOR
EXTERNAL INSTALLATION.

IMPORTANT NOTICE.

If the boiler is to be fitted in a timber framed building
it should be fitted in accordance with the British Gas
publication ‘Guide for Gas Installations in Timber
Frame Housing’, reference DM2. If in doubt, advice
must be sought from the Local Gas Region of British
Gas.

The boiler may be installed in any room or internal
space. Particular attention is drawn to the require-
ments of the current I.E.E Wiring regulations and, in
Scotland, the electrical provisions of the Building
Regulations applicable to Scotland with respect to
the installation of the boiler in a room or internal
space containing a bath or shower.

Where a room sealed appliance is installed in a
room containing a bath or shower then the appli-
ance 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 connection to the condensate drain.

Gas Supply

An existing meter (NG) and pipework should be
checked, preferably by the Gas region, to ensure
that they are adequate to deal with the rate of gas
supply required.
Supply pipes should be sized to suit installation and
obtain a working pressure of 20 mbar (NG) and 37
mbar (Propane). Installation pipes should be fitted in
accordance with BS.6891.
A Natural Gas appliance must be connected to a
governed meter.

Conversion

The appliance can be converted from NG to LPG or
vice versa by change of the Burner, Main and Pilot
Injectors and re-setting the Gas Valve. Contact your
supplier for the necessary parts.

Flueing

Only flue components provided by the Manufacturer
should be used with these appliances. 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 upwards, left, right or to

the rear of the appliance.

3. The boiler is supplied separate to the chosen flue

set. It can be supplied with Twin or Concentric

flues. The flue components for the Twin

Pipe

application must be chosen from the

separate

Flue Application Guide. There

are two lengths of