Gas And Electric Supply; Electricity Supply - Viessmann VITODENS 200-W Installation Instructions Manual

Vitoden 200-W installation

Gas and electric supply

Gas supply
• The Gas Supply should be checked
at the installation planning stage in
order to establish the availability of
an adequate supply of gas.
• A gas meter can only be connected by
the gas supplier or their contractor.
• An existing meter and / or pipework
should be of sufficient size to carry
the maximum boiler input plus the
demand of any other installed appliance.
(BS 6891: 1988).

Electricity supply

• Wiring external to the appliance must be
in accordance with BS 7671 (the current
I.E.E Wiring Regulations) for electrical
installation.
• The mains cable must be at least 0.75
mm 2 (24/0.2 mm) PVC insulated to
BS 6500 table 16.
• WARNING: THIS APPLIANCE MUST BE
EARTHED. (Failure to provide a
satisfactory earth connection would be
a safety hazard and may also result in
appliance malfunction).
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• The governor at the meter must give
• The gas supply line should be purged.
• The complete installation must be
• The method of connection to the
a constant outlet pressure of 21 mbar
+/- 1mbar when the appliance is
running.
WARNING: Before purging open all
doors and windows, also extinguish any
cigarettes, pipes and any other naked
lights.
tested for gas soundness.
mains supply must facilitate complete
electrical isolation of the appliance.
Either a 3A fused three pin plug and
unswitched shuttered socket outlet,
both complying with BS 1363, or a 3A
fused double pole switch having a 3mm
contact separation in both poles and
serving only the boiler (and its external
controls) may be used.
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