Glow-worm 56/3 Back Boiler - Manual (Page 2)

2 221724B
The instructions consist of three parts, Installation and
Servicing Instructions for the Back Boiler Unit, Installation
and Servicing Instructions for the Fire Front and Instructions
for Use, which includes the Guarantee Registration Card.
The instructions are an integral part of the appliance and
must, to comply with the current issue of the Gas Safety
(Installation and Use) Regulations, be handed to the user on
completion of the installation.
This boiler is for use only with a specially designed Glow-
worm Gas Fire Front, see Table 1.
This boiler is NOT suitable for fitting to a precast flues.
The boiler is delivered in one pack which contains all the
parts necessary for the installation.
If installing the back boiler unit and fire front at the same time
please read both sets of instructions before starting.
1 General Notes and Information
IMPORTANT NOTICE
The back boiler is fitted with a safety device which will shut it
down if there is a lack of oxygen. If the back boiler shuts
down frequently for no apparent reason. The first things to
be checked are the chimney and air inlets into the room.
Any problems found must be put right, by a competent
person, before the back boiler is used again.
This back boiler is for use only on G20 gas.
Wherever possible, all materials, appliances and
components to be used shall comply with the requirements
of applicable British Standards.
Where no British Standard exists, materials and equipment
should be fit for their purpose and of suitable quality and
workmanship.
Sheet Metal Parts
WARNING. When installing or servicing this back boiler care
should be taken when handling the edges of sheet metal
parts to avoid any possibility of personal injury.
1.1 Statutory Requirements
The installation of this back boiler unit must be carried out by
a competent person in accordance with the current issue and
relevant requirements of:
Manufacturer’s instructions, supplied.
The Gas Safety (Installation and Use) Regulations, The
Building Regulations, The Building Standards (Scotland)
Regulations (applicable in Scotland), Local Gas
Undertaking, Byelaws of the Local Water Company, The
Health and Safety at Work Act, Control of Substances
Hazardous to Health, The Electricity at Work Regulations
and any applicable local regulations.
Detailed recommendations are contained in the current issue
of the following British Standards and Codes of Practice,
BS6891, BS5449, BS5546, BS6700, BS5871, BS5440 Part 1
and 2, BS6798, BS1251, BS7478, BS7593, BS7671.
Manufacturer’s notes must not be taken as overriding
statutory requirements.
1 General
1.2 Data
Gas connection Rc 1 /
2
( 1 /
2
inBSPT)
Water connection Supplied in fittings pack
Electrical supply 230V~50Hz fused 3A
Weight, about 35kg
Water content 3.11Litres
Injector 3.6mm
Dimensions are given in millimetres (except as noted).
Data Label: Front, centre on base.
The Seasonal Efficiency Domestic Boilers UK (SEDBUK)
is 74.6%.
The value is used in the UK Government’s Standard
Assessment Procedure (SAP) for energy rating of dwellings.
The test data from which it has been calculated have been
certified by B.S.I.
1.3 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 back 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.
1.4 Electrical Supply
WARNING. This back boiler must be earthed.
All system components shall be of an approved type and
shall be connected in accordance with the current issue of
BS7671 and any applicable local regulations.
Connection of the back boiler and system controls to the
mains supply should be through a double pole isolating
switch, fused 3A having a minimum contact separation of
3mm in both poles.
Alternatively, a fused 3A 3 pin plug and unswitched socket
outlet to the current issue of BS1363 may be used.
Wiring to the back boiler must be PVC (85 o C) insulated type
to the current issue of BS6500 Table 16, not less than
0.75mm
2 (24/0.20mm).
1.5 Site Requirements
Refer to diagram 1.1 for dimensions appropriate to the back
boiler.
For all types of installation a standard sized builder’s
opening is required, see diagram 1.2.
It is important that the opening is cleared of debris and
mortar.
It is recommended that the access hole for pipework into the
fireplace or builder’s opening is either at the left hand or right
hand side of the chimney breast. If access is required at
both sides then it may be necessary to prepare some of the
connections before fitting the back boiler into the builder’s
opening.
The prepared base for the back boiler must be level.
NOTE: For wider openings corner infills may be required
when fitting some fire fronts. The infills are for cosmetic
reasons only, see diagram 1.3.
Refer to Table 2 for dimensions of fire front fixing wall face
which must be true.