Glow-worm Inset BBU50 - Manual (Page 3)

3 221723B
1 General
References in these instructions to British Standards, Statutory
Regulations and Requirements apply only to the United Kingdom.
For Ireland the rules in force must be used.
The instructions consist of three parts, Installation and Servicing
Instructions for the Back Boiler Unit, Installation and Servicing
Instructions for the specified Fire Front and Instructions for Use
and 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.
The Glow-worm Inset 50 Back Boiler Unit, GC No. 44 047 02 is
for use only with the Glow-worm Inset Fire Fronts.
1 General Notes and Information
IMPORTANT NOTICE
This boiler is for use only on G20 gas.
The back boiler unit is fitted with a flue blockage safety device
which will shut it down if there is a lack of oxygen resulting from
a build up of combustion products, the flame on the pilot light will
become unstable and lift up off the thermocouple. This will
deactivate the mag unit in the gas control valve, cutting off the
gas supply.
If the back boiler unit shuts down frequently for no apparent
reason the first things to check are the chimney and air inlets
into the room. Any problems found must be put right, by a
competent person, and a full operational test carried out before
the fire is used again.
The flue blockage safety device incorporates the electrode,
thermocouple and pilot assemblies.
The flue blockage safety device MUST NOT be adjusted or
disconnected. It must be serviced strictly in accordance
with the instructions in this book. Any unauthorised
interference could result in the device failing to operate,
creating a potentially dangerous situation. If replacing, use
only the correct and approved parts.
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.
This boiler, together with its fire can be used on a precast flue,
see Section 3.4.
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 General
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, Bye-laws 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 Standard codes of practice,
BS1251, BS5440 Part 1 and 2, BS5449, BS5546, BS5871,
BS6798, BS6891, BS7593, BS7671.
Manufacturer’s notes must not be taken as overriding statutory
obligations.
1.2 Data BBU 50
Gas connection Rc 1 /
2
( 1 /
2
inBSPT)
Water connection Supplied in fittings pack
Electrical supply 230V~50Hz fused 3A
Weight, about 40kg
(81.6lb)
Water content 3.11Litres
(0.68gall)
Injector 3.5mm
Dimensions, except as noted, shown on diagrams are in
millimetres.
Data Label: On the base of the boiler next to the electrical
control box.
The Seasonal Efficiency Domestic Boilers UK (SEDBUK)
is 76.8%.
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 must be in accordance with the current
issue of BS6891.
The supply from the governed gas 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 for soundness using the
pressure drop method and suitable leak detection fluid, purge
in accordance with the above standard.
1.4 Electrical Supply
WARNING. This 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 boiler and system controls to the mains
supply should be through a common isolator , a double pole
isolating switch, fused 3A, should be used, having a minimum
contact separation of 3mm in both poles.
Alternatively, a fused 3A 3pin plug and unswitched shuttered
socket both to the current issue of BS1363 may be used.
Wiring to the boiler must be PVC (85 o C) insulated type to the
current issue of BS6500 Table 9, not less than 0.75mm 2 (24/
0.20mm).