4
221138C
1 G e n e r a l
2267
5
5
5
DIMENSIONS
IN MILLIMETRES
5
Diagram 2.1
5
800
INCREASE TO 25MM CLEARANCE
FROM COMBUSTIBLE MATERIAL
150
150
2 B o i l e r P o s i t i o n
1.7 Gas Supply
The gas installation shall be in accordance with the rules
in force in the countries of destination.
The supply from the governed meter must be of adequate
size to provide a steady inlet working pressure of
20mbar (8in wg) at the boiler.
1.8 Electrical Supply
WARNING. This boiler must be earthed.
All system components shall be of an approved type.
The electrical installation shall be in accordance with the
rules in force in the countries of destination.
Connection of the whole electrical system of the boiler
and any heating system controls to the electrical supply,
must be through one common isolator.
Isolation should be by a double pole switched fused spur
box, having a minimum contact separation of 3mm in
each pole. The fused spur box should be readily
accessible and preferably adjacent to the appliance.
It should be identified as to its use.
Alternatively, a fused 3A 3pin plug and unswitched
socket may be used, provided they are not used in a
room containing a bath or shower.
The mains supply cable and other cables connected to
the boiler must be the PVC flexible type of at least
0.75mm
2
(24/0.20mm) .
2.1 Location
This boiler must be installed in accordance with the rules
in force in the countries of destination.
This boiler is not suitable for fitting outside.
Any electrical switch must be positioned so that it cannot
be touched by a person using the bath or shower.
The boiler must be mounted on a flat wall which is
sufficiently robust to take its weight, refer to
Section 1, “Data”.
If the location of the boiler or any part of the system is
subject to severe cold weather conditions, it is
recommended that a frost thermostat is fitted. Any part
of the system that may be vulnerable to freezing must
be protected.
If the boiler is to be fitted into a cupboard, compartment
or unusual location, special procedures are necessary.
Make sure that the cupboard or compartment air vents
are positioned to be clear of obstructions at all times,
refer to Section 3, Cupboard/Compartment Ventilation.
2.2 Clearances
The boiler should be positioned so that at least the
minimum operational and servicing clearances are
provided, see diagram 2.1. Additional clearances may
be required around the boiler for installation.