Dimplex System 18 Installation And Servicing Instructions page 14

7 7 . . 0 0 S S I I T T E E R R E E Q Q U U I I R R E E M M E E N N T T S S
7 7 . . 3 3 V V E E N N T T I I L L A A T T I I O O N N O O F F C C O O M M P P A A R R T T M M E E N N T T S S
1. Where the appliance is installed in a cupboard or
compartment, no air vents are required.
Where an open flued system is used - Flue kit E (B23
classification) then an air vent communicating directly with
outside air must be provided in the same room or internal
space of the flue duct air inlet. Minimum free area:
System 18 = 88cm
System 30 = 159cm
In addition if an open flued system is used - Flue kit (B23
classification) and the boiler is fitted in a compartment, then
high and low level ventilation is required.
BS 5440-2:2000 gives guidance on compartmental ventilation.
2. When the boiler is installed in a cupboard or compartment
and either flue kit A, B, C, D or F (Classification C13, C33, C53)
is used, then no compartmental ventilation is required.
7 7 . . 4 4 G G A A S S S S U U P P P P L L Y Y
1. The gas installation should be in accordance with the
relevant standards. In GB this is BS 6891. In IE this is the
current edition of I.S. 813 "Domestic Gas Installations".
2. The connection to the appliance is a 22mm copper tail
located at the rear of the gas service cock (Fig. 13).
3. Ensure that the pipework from the meter to the appliance is
of adequate size, and the demands of any other gas appliance
in the property are taken into consideration. Do not use pipes
of a smaller diameter than the boiler gas connection (22mm).
4. For boilers connected to use LPG (propane), the inlet
pressure must be 37mbar.
N N O O T T E E : : The completed installation should always be tested
for gas tightness
7 7 . . 5 5 E E L L E E C C T T R R I I C C A A L L S S U U P P P P L L Y Y
1. External wiring must be correctly earthed, polarised and in
accordance with relevant regulations/rules. In GB this is the
current I.E.E. Wiring Regulations. In IE reference should be
made to the current edition of the ETGI rules.
2. The mains supply is 230V - 50H z fused at 3A
N N O O T T E E : : The mains supply connection must allow complete
electrical isolation of the appliance and system controls
only.
Connection may be via a fused double-pole isolator with a
contact separation of at least 3mm in all poles and servicing
the boiler and system controls only.
Any additional mains cable should comply fully with the
current I.E.E. wiring regulations.
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2
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F F i i g g . . 1 1 3 3
Gas Service
Cock
© Dimplex Boilers 2008