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; ; ;
B
; ; ; ; ;
A
P
D
E
SIDE ELEVATION
A
B
C
70
300
63
Important Notice
This boiler is for use only on natural gas (G20).
This boiler can be used on open vented or sealed water
systems.
When used on an open vented system domestic hot water can
be provided by gravity or pumped circulation.
Wherever possible, all materials, appliances and components
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 boiler care should
be taken when handling sheet metal parts, to avoid any possibility
of personal injury.
1.1 Statutory Requirements
The installation of the boiler must be carried out by a competent
person in accordance with the relevant requirements of the
current issue of:-
The manufacturer's instructions, supplied.
The Gas Safety (Installation and Use) Regulations, The Building
Regulations, The Building Standards (Scotland) Regulations
(applicable in Scotland), Local Water Company Bye-laws,
The Health and Safety at Work Act, Control of Substances
Hazardous to Health, The Electricity at Work Regulations and
any local regulations which may apply.
1 General Data
C
WATER CONNECTIONS
22mm COPPER PIPE
GAS CONNECTIONS
RC
1
/
All dimensions are given in millimetres
(except as noted)
D
E
F
146
78
360
139
(
1
/
in. BSPT)
2
2
G
H
J
87
700
574
Detailed recommendations are contained in the current issue of
the following British Standards and Codes of Practice:-
BS4814, BS6798, BS5440 Part 1 and 2, BS5546 Part 1, BS5449,
BS6891, BS6700, BS7074 Part 1 and 2, BS7593, BS7671.
Manufacturer's instructions must not be taken as overriding
statutory requirements.
1.2 Data
See Table 1 and diagram 1.1
All dimensions are given in millimetres (except as noted).
The Seasonal Efficiency Domestic Boilers UK (SEDBUK)
is 79.9%.
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 Range Rating
This boiler is range rated and may be adjusted to suit individual
system requirements.
See diagram 1.2 for the ratings and settings.
1.4 Testing and Certification
This boiler is tested and certificated for safety and performance.
It is, therefore, important that no alteration is made to this boiler
unless approved, in writing, by Hepworth Heating Ltd.
Any alteration not approved by Hepworth Heating Ltd., could
invalidate certification, boiler warranty and could also infringe
the statutory requirements.
5
F
G
G
H
H
C L
L
J
N
FRONT ELEVATION
K
L
M
N
14
60
130
Diagram 1.1
D
K
M
P
38
221656D
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