Boiler Mounting Surface; Clearances Around The Boiler; Ventilation; Balanced Flue Terminal - Potterton Flamingo RS40 Installation And Service Manual

DATA SECTION – Page 4

BOILER MOUNTING SURFACE

The appliance must be mounted on a flat wall of noncom-bustible material which will not reverberate and is
sufficiently robust to take the weight of the boiler. Local Authority and Building Regulations must be observed.

CLEARANCES AROUND THE BOILER

Any position selected for the boiler must give the following minimum clearances for installation and maintenance:
610mm (2ft.) at the front
50mm (2in.) at the top - except where the optional pump casing is to be fitted, when 178mm (7in.) must be allowed.
150mm (6in.) at the bottom
5mm (1/5in.) at each side.
All pipes can be run behind the boiler within its casing width. All connections should be pre-piped with short lengths
of pipe, long enough to clear the extremities of the boiler casing. On the RS4O boiler the flow connection(s) can be
made from above, below or from the left-hand side when viewed from the front: return connection(s) can be made
from above, below or from the right. Connections on the RS5OS boiler can be made from either side to both flow and
return ports, equally connections can be made from above and below the appliance. Pipe-work cannot be run from
left to right behind the boiler, although it can run from one side to the other immediately above or below the air duct,
where in most cases it would be hidden.

VENTILATION

If the boiler is to be installed in a confined space such as a cupboard, the space will need ventilating. Openings should
be provided at the top and bottom of the cupboard, each having a free area of RS5OS 175 sq.cm. (27 sq.in.) RS4O
138 sq.cm. (21 sq.ins.). Where the openings draw air direct from outside the building the size of the free areas can be
halved. Purpose designed, permanent air vents are not required in the room in which the boiler is installed, whether or
not it is in a cupboard. Refer to BS.5376 Part 2 for further information.
Any internal surface of the cupboard that is made of a combustible material and is nearer to the boiler than 75mm
(3ins.) should be insulated as described in British Gas publication Material and Installation Specification for
Domestic Central Heating and Hot Water.

BALANCED FLUE TERMINAL

The correct positioning of the balanced flue terminal on the outside wall of the building is important. It should not be
near any obstruction such as a balcony, drain or stack pipe and it must not be sited near the corner of a building.
Where the terminal has to be positioned near an obstruction, it is advisable to extend the terminal within its limits so
that its grille clears the line of the obstruction: when this is necessary, a false wall should be built around the terminal
box. The terminal must not be located where its discharge could enter an open door or window, on cause a nuisance
in a public right of way. It is advisable to have a minimum of 600mm (2ft.) of flat wall space all around the terminal.
If the terminal discharges at a low level, a terminal guard, supplied, as an optional extra, should be fitted. All
installations should conform with the Local Authority and Building Regulations and British Standard Code of
Practice. BS.5440 Part 1.
ELECTRICAL SUPPLY
A 240 volts A.C., 50Hz single phase electricity supply fused to 3 amperes must be provided in accordance with the
latest edition of the Institute of Electrical Engineers Regulations for the Electrical Equipment and Local Authorities
and British Gas Requirements.
The current rating of the wiring to the boiler must exceed 3 amperes, in accordance with BS.6500 1975 and having a
cross sectional area of at least 0.75 sq. mm. The supply to the boiler and its associated equipment should be
controlled by an unswitched plug and socket or a double pole switch, so that complete isolation from the supply can
be achieved to enable maintenance work to be carried out in safety.
GAS SUPPLY
The gas meter and supply pipe should be checked to ensure that they are large enough for the boiler and any other
appliance already installed; the local Gas Regional Office will assist in this matter. The recommendations of CP. 331
Parts 2 and 3 should be observed.
SAFETY VALVE
If the Local Authorities Regulations stipulate that a safety valve should be fitted, this should be installed in the flow
pipework as close to the boiler as possible.
SERVICING
Servicing is a simple matter as once the casing has been removed all parts that are likely to require servicing are
easily accessible.
SETTING UP
Each boiler has to be adjusted once it is installed and this is a skilled job which should only be undertaken by suitably
qualified Engineers. Potterton International offer this service on a changeable basis.