Technical data

77..00 SSIITTEE RREEQQUUIIRREEMMEENNTTSS
77..33 VVEENNTTIILLAATTIIOONN OOFF CCOOMMPPAARRTTMMEENNTTSS
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
2
System 30 = 159cm
2
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 le
vel 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.
1144
© Dimple
x Boiler
s 2008
77..44 GGAASS SSUUPPPPLLYY
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.
NNOOTTEE::
The comple
ted installation should always be tested
for gas tightness
77..55 EELLEECCTTRRIICCAALL SSUUPPPPLLYY
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 t
o the cur
r
en
t
edition of the ET
GI rules.
2. The mains supply is 230V - 50H
z
fused at 3A
NNOOTTEE::
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 sy
s
t
em con
t
rols only.
Any additional mains cable should comply fully with the
current I.E.E. wiring regulations.
FFiigg.. 1133
Gas Serv
ice
Cock