Air Suply; Electricity Supply; Guide To System Requirements - Vaillant ECOmax VUW 236 EH Instructions For Installation And Servicing

3.5 Air supply
Detailed recommendations for air sup-
ply are given in BS 5440: Part 2.
It is not necessary to have an air vent
in the room or internal space in which
the boiler is installed.
3.5.1 Cupboard or compart-
ment air supply
ECOmax Room Sealed Condensing
Combination Boilers are very high
efficiency appliances. As a conse-
quence the heat loss from the
appliance casing during operation
is very low. For cupboard and
compartment installations it is there-
fore not necessary to provide any high
or low level permanent air vents for
cooling purposes.

3.6 Electricity supply

A 230 volts~ 50Hz single phase elec-
tricity supply fused to 3 amps must be
provided in accordance with the latest
edition of the I.E.E. Wiring Regulati-
ons and any other local regulations
that may apply.
THIS APPLIANCE MUST BE EARTHED.
The method of connection to the mains
electricity supply must provide a
means of completely isolating the boi-
ler and its ancillary controls. Isolation
is preferably by the use of a fused
three-pin plug and unswitched shut-
tered socket outlet, both complying
with the requirements of BS 1363.
Alternatively, a 3 Amp fused double-
pole switch with a 3mm contact sepa-
ration on both poles may be used.
3.7 Guide to system
requirements
3.7.1 Water circulation system
Detailed recommendations for the
water circulation system are given in
BS 6798 and BS 5449: Part 1 (for
small bore and micro bore central
heating systems).
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