1 general – Glow-worm Hideaway 40CF User Manual
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221807B
1 General
1.4 B.S.I. Certification
This boiler is certificated by B.S.I. for safety and performance.
It is, therefore, important that no alteration is made to the boiler
unless approved, in writing, by Hepworth Heating Ltd.
Any alteration not approved by Hepworth Heating Ltd., could
invalidate the B.S.I. certification, boiler warranty and could also
infringe the statutory requirements.
1.5 Gas Supply
The gas installation shall be in accordance with the current
issue of BS6891.
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.
On completion test the gas installation using the pressure drop
method and suitable leak detection fluid, purge in accordance
with the current issue of BS6891.
1.6 Electrical
Warning. This boiler must be earthed.
The electrical installation must be carried out by a competent
person. All external components must be of the approved type
and must be connected in accordance with the current issue of
BS7671 and any local regulations which may apply.
Connection of the boiler and any system controls to the mains
supply should be through a 3A fused double pole isolating
switch, having a minimum double pole contact separation of
3mm, serving only the boiler and system controls.
Heat resistant flexible cable of at least 0.75mm
2
, to the current
issue of BS6500 Table 16 must be used for all connections
within the boiler casing.
1.7 Boiler Location
The boiler must not be installed in a room used or intended to
be used as sleeping accommodation or a room containing a
bath or shower.
This boiler is not suitable for installation out of doors.
The boiler must stand on a level floor, conforming with local
authority requirements and building regulations. The base
temperature is within the requirements of the current issue of
BS5258. The boiler may be stood on a wooden floor but a metal
plate is required to protect plastic tiles and similar floor coverings.
Suitable clearance needs to be available at the sides of the
boiler to ease connection of pipework. The actual clearances
will vary according to site conditions.
When the boiler is to be installed level with work surfaces,
minimum clearances to fixtures, walls and the like should be
provided, see diagram 1.2.
To ease minimum clearances it may be necessary to modify
units or fixtures.
A front access clearance should be provided as shown in
diagram 1.3.
The minimum gap behind the top casing is dimension “G” in
diagram1.1. The boiler can be sited further away from the wall
if required to align with kitchen units.
Combustible wall material must be 25mm (1in) away from flue
components.
A special top casing, part number 424858 can be bought, to
enable boiler casings to be arranged flush with 600mm (23
5
/
8
in)
deep worktops.
Where the installation of the boiler will be in an unusual location,
special procedures may be necessary, the current issue of
BS6798 gives detailed guidance on this aspect.
A compartment used to enclose the boiler must be designed
and constructed specifically for this purpose. An existing
cupboard or compartment modified for the purpose may be
used. Details of essential features of cupboard and compartment
design are given in the current issue of BS6798.
Make sure that nothing will obstruct the side clearances or side
grilles. If installing the boiler in a compartment make sure that
openings and vents are not obstructed.
1.8 Heating System Controls
The heating system should have installed: a programmer and
room thermostat controlling the boiler.
Thermostatic radiator valves may be installed in addition to the
room thermostat.
Note: For further information, see The Building Regulations
1991 - Conservation of fuel and power, 1995 edition - Appendix
G, table 4b.
TOP & SIDE CLEARANCES
Diagram 1.2
Diagram 1.3
FRONT CLEARANCE
530 (21in.)
WALL OR
FIXTURE
0911
BOILER
1020
6
(
1/
4
in.)
6
(
1/
4
in.)
254
(10 in.)
20 (
3/
4
in.)
CUPBOARD
CUPBOARD
BOILER
20 (
3/
4
in.)
WORKTOP
WORKTOP