Supplied By www.heating spares.co Tel. 0161 620 6677
8
Optia FF - Installation & Servicing
GENERAL
containing a bath or shower. For Ireland reference should be
made to the current ETCI rules for electrical installations and
I.S.813:2002.
If the appliance is to be installed in a room containing a bath or
shower then, providing waterjets are not going to be used for
cleaning purposes (such as communal baths/showers), the
appliance can be installed in Zone 3, as detailed in BS.7671.
Where installation will be in an unusual location, special
procedures may be necessary and BS.6798 gives detailed
guidance on this aspect.
Compartment Installations
A compartment used to enclose the boiler MUST be designed
and constructed specially for this purpose.
An existing cupboard or compartment may be used, provided it
is modified for the purpose.
In both cases details of essential features of cupboards/
compartment design, including airing cupboard installation, are
to conform to the following :
!BS. 6798.
!The position selected for installation MUST allow adequate
space for servicing in front of the boiler and for air circulation
around the boiler. Refer to 'Air Supply'.
!For the minimum clearances required for safety and
subsequent service refer to the wall mounting diagram,
Frame 2. In addition, sufficient space may be required to allow
lifting access to the wall mounting plate.
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.
The boiler is to be installed only on a gas supply with a governed meter.
A gas meter can only be connected by the local gas supplier or by
a local regional contractor.
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 pressure of 20 mbar MUST be
available at the boiler inlet with the boiler operating.
Installation pipes MUST be fitted in accordance with BS. 6891. In
IE refer to I.S. 813:2002. Pipework from the meter to the boiler
MUST be of an adequate size. FF100 models should be piped in
22mm minimum. The final 1 metre may be run in 15mm if it is
visible.
The complete installation MUST be tested for gas soundness and
purged as described in the above code.
FLUE INSTALLATION
Pluming may occur at the terminal so terminal positions which
would cause a nuisance should be avoided.
The flue must be installed in accordance with the
recommendations of BS. 5440-1:2000. In IE refer to I.S. 813:2002.
The following notes are intended for general guidance:-
1. The boiler MUST be installed so that the terminal is exposed
to external air.
2. It is important that the position of the terminal allows the free
passage of air across it at all times.
3. Minimum acceptable spacing from the terminal to obstructions
and ventilation openings are specified in Table 3.
4. Where the lowest part of the terminal is fitted less than 2m
(6'6") 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 in Table 3,
Nos. 2,3, 4, 5 and 6 would be 75mm in order to allow a terminal
guard to be fitted.
Terminals guards are available from boiler suppliers - ask for
TFC Flue Guard, Model K1. In case of difficulty seek advice from:
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.
5. The flue assembly shall be so placed or shielded as to prevent
ignition or damage to any part of any building.
6. 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.
7. Where it is essential that the terminal wall plate is fitted, i.e. wall
thicknesses over 600mm (23 1/2") or with an inaccurately cut hole,
the minimum spacing in Table 3 Nos. 2,3, 4, 5 and 6 would be
60mm (2 1/2") in order to allow the terminal wall plate to be fitted.
IMPORTANT. It is absolutely ESSENTIAL 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
'unsafe' and corrective action taken.
TERMINAL
The terminal assembly can be adapted to accommodate various
wall thicknesses. Refer to Frame 10.
AIR SUPPLY
Detailed recommendations for air supply are given in BS.5440:2.
In IE refer to I.S. 813:2002.
The following notes are for general guidance:
1. It is NOT necessary to have a purpose provided air vent in the
room or internal space in which the boiler is installed.
Table 3 - Balanced flue terminal position
Approved Manufacturer’s Clearances
Terminal Position Minimum Spacing
1a. Directly BELOW an opening, air brick,
opening window, etc. 300 mm (12")
1b. Directly ABOVE an opening, air brick,
opening window, etc. 300 mm (12")
1c. HORIZONTALLY to an opening,
air brick, opening window, etc. 300 mm (12")
2. Below guttering, drain pipes or soil pipes 25 mm ( 1")
3. Below eaves 25 mm ( 1")
4. Below balconies or a car port roof 25 mm ( 1")
5. From vertical drain pipes or soil pipes 25 mm ( 1")
6. From an internal or external corner or
to a boundary alongside the terminal 25 mm ( 1")
7. Above adjacent ground, roof or
balcony level 300 mm (12")
8. From a surface or a boundary
facing the terminal 600 mm (24")
9. From a terminal facing a terminal 1200 mm (48")
10. From an opening in a car port
(e.g. door or window) into dwelling 1200 mm (48")
11. Vertically from a terminal on the
same wall 1500 mm (60")
12. Horizontally from a terminal on the wall 300 mm (12")
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