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This appliance must be installed by a competent person in
accordance with and defined by, the Standard Specification
(Domestic Gas Installations) Declaration (I.S. 813).
4A.1 RELATED DOCUMENTS
The installation of this boiler must be in accordance with the
relevant requirements of the local building regulations, the current
ETCI National Rules for Electrical Installations, and the bylaws of
the local water undertaking. It should be in accordance also with
any relevant requirements of the local and/or district authority.
ATTENTION
The use of PPE (Personal Protective Equipment) such as but not
limited to gloves, mask, safety glasses, etc. is strongly recom-
mended whenever carrying out the installation, repair, or mainte-
nance of this appliance – please pay particular attention to:
• Sharp edges that may be encountered when:- handling or
lifting the appliance, removing parts, etc. during installation
and maintenance
•
Airborne particles that may be released and/or disturbed when
cleaning or removing components during maintenance
• Water treatment chemicals that could have been added to
the system water may spill from the appliance and or com-
ponents during maintenance
Please refer to an appropriate Health and Safety document
such as HSE L23 (UK) or S.I. 299 (Ireland), for more detailed
advice on safe working practices and procedures.
4A.2 LOCATION OF APPLIANCE
The appliance may be installed in any room or internal space,
although particular attention is drawn to the requirements of
the current ETCI National Rules for Electrical Installations, and
I.S. 813, Annex K. When an appliance is installed in a room
or internal space containing a bath or shower, the appliance
or any control pertaining to it must not be within reach of a
person using the bath or shower. The location chosen for the
appliance must permit the provision of a safe and satisfactory
flue and termination. The location must also permit an adequate
air supply for combustion purposes and an adequate space for
servicing and air circulation around the appliance. Where the
installation of the appliance will be in an unusual location special
procedures may be necessary, refer to I.S. 813 for detailed
guidance on this aspect. A compartment used to enclose the
appliance must be designed and constructed specifically for this
purpose. An existing compartment/cupboard may be utilised
provided that it is modified to suit
.
This appliance is not configured for external installation
.
4A.3 GAS SUPPLY
The gas meter – as supplied by the gas supplier – must be
checked to ensure that it is of adequate size to deal with
the maximum rated input of all the appliances that it serves.
Installation pipes must be fitted in accordance with I.S. 813
.
Pipe work from the meter to the appliance must be of adequate
size. Pipes of a smaller size than the appliance gas inlet
connection must not be used. The installation must be tested
for soundness in accordance with I.S. 813.
If the gas supply serves more than one appliance, it must
be ensured that an adequate supply is maintained to each
appliance when they are in use at the same time.
NOTE:
It is recognised that ‘pressure loss’ through the
gas cock and gas valve may result in a pressure drop of
approximately 2mbar between the gas meter and gas valve
inlet test point; this will not impair the performance of the
appliance, provided that a dynamic pressure of 18mbar is
available at the appliance inlet.
4A.4 FLUE SYSTEM
The terminal should be located where the dispersal of combustion
products is not impeded and with due regard for the damage
and discoloration that may occur to building products located
nearby. The terminal must not be located in a place where it is
likely to cause a nuisance (see I.S. 813).
In cold and/or humid weather, water vapour will condense
on leaving the terminal; the effect of such pluming must be
considered.
If installed less than 2m above a pavement or platform to
which people have access (including balconies or flat roofs)
the terminal must be protected by a guard of durable material.
The guard must be fitted centrally over the terminal. Refer to
I.S. 813, when the terminal is 0.5 metres (or less) below plastic
guttering or 1 metre (or less) below painted eaves.
4A. SECTION - GENERAL REQUIREMENTS (EIRE)
4A.5 AIR SUPPLY
The following notes are intended for general guidance only.
This appliance is a room-sealed, fan-flued boiler, consequently it
does not require a permanent air vent for combustion air supply.
When installed in a cupboard or compartment, ventilation for
cooling purposes is also not required.
4A.6 WATER CIRCULATION
Specific recommendations are given in I.S. 813. The following
notes are for general guidance only.
4A.6.1 PIPEWORK
It is recommended that copper tubing be used in conjunction
with soldered capillary joints. Where possible pipes should
have a gradient to ensure air is carried naturally to air release
points and that water flows naturally to drain cocks
. Except
where providing useful heat, pipes should be insulated to avoid
heat loss and in particular to avoid the possibility of freezing.
Particular attention should be paid to pipes passing through
ventilated areas such as under floors, loft space, and void areas
.
4A.6.2 AUTOMATIC BY-PASS
The appliance has a built-in automatic by-pass, consequently there
is no requirement for an external by-pass, however the design
of the system should be such that it prevents boiler ‘cycling’.
4A.6.3 DRAIN COCKS
These must be located in accessible positions to facilitate
draining of the appliance and all water pipes connected to the
appliance.
4A.6.4 AIR RELEASE POINTS
These must be positioned at the highest points in the system
where air is likely to be trapped. They should be used to expel
trapped air and allow complete filling of the system
.
4A.6.5 EXPANSION VESSEL
The appliance has an integral expansion vessel to accommodate
the increased volume of water when the system is heated.
Refer to the specification table for more detailed information
.
4A.6.6 FILLING POINT
A method for initial filling of the system and replacing water lost
during servicing etc. is provided (see fig. 6). You should ensure this
method of filling complies with the local water authority regulations
.
4A.6.7 LOW PRESSURE SEALED SYSTEM
An alternative method of filling the system would be from an
independent make-up vessel or tank mounted in a position
at least 1 metre above the highest point in the system and at
least 5 metres above the boiler (see fig. 7
). The cold feed from
the make-up vessel or tank must be fitted with an approved
non-return valve and stopcock for isolation purposes. The feed
pipe should be connected to the return pipe as close to the
boiler as possible.
4A.6.8 FREQUENT FILLING
Frequent filling or venting of the system may be indicative
of a leak. Care should be taken during the installation of the
appliance to ensure all aspects of the system are capable of
withstanding pressures up to at least 3 bar.
4A.7 ELECTRICAL SUPPLY
The appliance is supplied for operation on 230V @ 50Hz electrical
supply; it must be protected with a 3-amp fuse (supplied). The
method of connection to the mains electricity supply must allow
for complete isolation from the supply. The preferred method is
by using a double-pole switch with a contact separation of at
least 3mm. The switch must only supply the appliance and its
corresponding controls, i.e. time clock, room thermostat, etc.
Alternatively an un-switched shuttered socket with a fused 3-pin
plug both complying with BS 1363 is acceptable.
Warning!
This appliance must be earthed.
4A.8 MOUNTING ON A COMBUSTIBLE SURFACE
The appliance can be mounted on a wall of combustible material
without any requirement to fit any additional protective (fire-
resistant) material.
4A.9 TIMBER FRAMED BUILDINGS
I
f the appliance is to be fitted in a timber framed building, it
should be fitted in accordance with I.S. 813 and local Building
Regulations. The Institute of Gas Engineers publication (IGE/
UP/7) ‘Guide for Gas Installations in Timber Frame Buildings’
gives specific advice on this type of installation
.
