BENSON OLYMPIC WH - Flue Installation; Gas Installation;Connection; Electrical Installation;Connection; Air Distribution Installation

3.5 Flue Installation
An integral flue spigot is fitted to all Cabinet Heaters thereby allowing the flue to connect
directly to the heater. The design of the flue must ensure that it can be disconnected to allow for
cleaning and servicing, furthermore, all of the flue section joint sockets mu st face upwards , and the
seal between the sections achieved through mechanical joints or through the use of approved
caulking string and grout. It is strongly advised that BS 5854 and BS 5440 parts 1 and 2 are referred
to,
see also figs 2 - 12.
Where condensation is likely to be a problem provision should be made preferably at the design
stage (see section 2.5).
3.6 Gas Installation/connection
Service pipework must terminate at an approved gas cock, and be adjacent to the pcsition of the
heater.
The connection to the heater can be made by way of either an approved flexible coupling,
or rigid connection. Threaded connections must comply with ISO 228/1 or ISO 7/ 1, further
information concerning the accepted practice in European countries is detailed in the June 1995
version
of prEN 1020 Annex A7.
The diameter of the pipework from the cock to the burner connection must not be less than the
diameter of the burner connection inlet. (See section 8). The installation must be pur g ed and tested
for soundness prior to commissioning.
3.7 Electrical Installation/connection
The various models are available either for 415C 50Hz 3PH or 230V 50Hz 1PH supplies and
reference should be made to the wiring diagrams contained later in thi s manual prior to
installation or connection to the supply. The electrical supply must be as specified and suitable for
the heater,
and must be run within conduit to a point adjacent to the heater , and be terminated to
provide an isolation point that will prevent remote or inadvertent activation. Cables, conduit, and
fittings that are used to make the connection between the isolator and the heater must conform to
the
appropriate lEE regulation s. All heaters are supplied fused and pre-wired, all must be earthed .
Final
connections for any additional external controls must be completed on site, and must be
carried out according to lEE regulations. The installer is strongly advised to consult the wiring
diagrams contained within this manual prior to undertaking any electrical work.
Separate user information is provided for the time control unit and the burner, and forms part
of the product information pack which accompanies every heater when dispatched (see section B) .
Warning
Always isolate from the electrical supply before commencing work on the heater.
3.8 Air Distribution Installation
The materials selected must be of low heat capacity, and it is preferable that all warm air
ductwork is thermally insulated . Where ducting may be subject to deterioration from exposure to
moisture or high humidity material selection and insulation are prime consideration s. Joints and
seams must be air tight and fastened securely and designed to remain so, even when operating at
high temperatures. Adequate support must be designed into the layout of the ductwork to en s ure
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