Flue Installation - IDEAL imax W45 Installation And Servicing Manual

LOCATION OF BOILER
The boiler must be installed on a flat and vertical wall, capable
of adequately supporting the weight of the boiler and any
ancillary equipment or on a boiler frame supplied in kit form by
Caradon Ideal Limited.
The boiler must not be fitted outside.
GAS SUPPLY
The local gas supplier should be consulted, at the installation
planning stage, in order to establish the availability of an
adequate supply of gas. An existing service pipe must NOT be
used without prior consultation with the local gas supplier.
A gas meter can only be connected by the local gas supplier or
by a registered CORGI engineer or in IE by a competent person.
An existing meter should be checked, preferably by the gas
supplier, to ensure that the meter is adequate to deal with the
rate of gas supply required. A minimum working gas pressure
of 17.5mbar MUST be available at the boiler inlet for Natural gas
and 37mbar for Propane.
Do not use pipes of smaller size than the boiler inlet gas
connection.
The complete installation MUST be tested for gas soundness
and purged in accordance with the appropriate standards listed
on page 4.

FLUE INSTALLATION

The flue kits are suitable for use with the
These kits and the associated options are suitable for both roof
and wall mounting applications.
The roof flue kits are suitable for both flat and pitched roof
termination, using either concentric or flue only terminals.
Connection to the top of the boiler is made using a separately
supplied vertical connector in concentric, twin pipe and open flue
configurations (supplied in our optional extra kits).
Additional information covering the selection and installation can
be found with this booklet.
Weather Proofing
Where the flue passes through the roof line an adequate seal
must be made. This can be achieved by using either:
• Flat weather collar
• Pitched weather collar
Flue duct extension kits are available for concentric flue
configuration. These packs contain additional 1 metre ducts
and may be cut to the desired length.
Flue duct extension kits are available for twin pipe and open flue
configurations. These packs contain 2 x 1 metre ducts and may
be cut to the desired length.
If obstructions prevent direct flue routing then both 90º and 45º
elbows can be provided to offset the flue system.
Terminal Position
Due to the high efficiency of the boilers pluming will occur. For
this reason, vertical termination is recommended, and in any
case, terminal positions which could cause problems should
where possible be avoided. Particular care should be taken in
the case of large multiple boiler installations, and complying
with the requirements of the Clean Air Act.
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Installation & Servicing
GENERAL
IMPORTANT
It is the responsibility of the installer to ensure, in practice, that
products of combustion discharging from the terminal cannot re-
enter the building or any other adjacent building through
ventilators, windows, doors, other sources of natural air
infiltration, or forced ventilation / air conditioning.
If this should occur the appliance MUST be turned OFF, labelled
as 'unsafe' and corrective action taken.
Where the lowest part of the terminal is fitted less than 2m (80")
above a balcony, above ground or above a flat roof to which
people have access then the terminal MUST be protected by a
purpose designed guard. The minimum spacing between the
balcony and the terminal should be 75mm, in order to allow a
terminal guard to be fitted.
Terminal guards are available from boiler suppliers - for all
requirements contact:
Grasslin (UK) Ltd., Tower House, Vale Rise,
Tonbridge, Kent TN9 1TB.
Tel: +44 (0) 1732 359 888. Fax: +44 (0) 1732 354 445
www.tfc-group.co.uk
Ensure that the guard is fitted centrally.
The air inlet/products outlet duct and the terminal of the boiler
MUST NOT be closer than 25mm (1") to combustible material.
Detailed recommendations on the protection of combustible
material are given in BS. 5440-1: 2000. In IE refer to I.S.813:2002.
The flue must be installed in accordance with Building
boiler only.
Regulations and the recommendations of BS. 5440-1:2000 for
inputs up to 70kW nett. For larger installation BS. 6644 should
be complied with. In IE refer to I.S.820:2000.
WATER CIRCULATION SYSTEM
The system pump MUST be connected to the boiler, see below.
The boiler must NOT be used for direct hot water supply. The
hot water storage cylinder MUST be of the indirect type.
Single feed, indirect cylinders are not recommended and MUST
NOT be used on sealed systems.
The appliances are NOT suitable for gravity central heating nor
are they suitable for the provision of gravity domestic hot water.
The hot water cylinder and ancillary pipework, not forming part of
the useful heating surface, should be lagged to prevent heat
loss and any possible freezing - particularly where pipes run
through roof spaces and ventilated underfloor spaces.
The boiler must be vented.
Draining taps MUST be located in accessible positions, which
permit the draining of the whole system - including the boiler
and hot water storage vessel. They should be at least 1/2" BSP
nominal size and be in accordance with BS. 2879.
The central heating system should be in accordance with the
relevant standards listed on page 4.
Due to the compact nature of the boiler the heat stored within the
castings at the point of shutdown of the burner must be
dissipated into the water circuit in order to avoid overheating. In
order to allow pump operation after burner shutdown the boiler
control box incorporates a 5 minute pump overrun facility. In
order to make use of this, the pump must be supplied from the
terminals inside the boiler. Note: for pumps requiring greater
than 1.0 amp current, they must be connected via a relay.
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