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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.
Check that the appliance is suitable for the proposed gas supply.
A working gas pressure of 20 mbar MUST be available at the
boiler inlet.
Installation pipes MUST be fitted in accordance with BS. 6891.
Pipework from the meter to FF80 boilers MUST be of an
adequate size, i.e. not less than 22mm O.D. copper or
" BSP iron.
3/4
Do not use pipes of smaller size than the boiler inlet gas
connection.
The complete installation MUST be tested for gas soundness
and purged as described in the above code.
FLUE INSTALLATION
The flue must be installed in accordance with the
recommendations of BS. 5440: Part 1.
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 5.
Note (Positions 2-6) : Due to the terminal design, installation is
possible with clearances less than those specified in BS 5440,
Part 1.
Table 5 - Balanced flue terminal position
Terminal Position
1.
Directly below or alongside an
openable window, air vent or other
ventilation opening
2.
Below guttering, drain pipes or soil
pipes
3.
Below eaves
4.
Below balconies or a car port roof
5.
From vertical drain pipes or soil pipes
6.
From internal or external corners
7.
Above adjacent ground, roof or
balcony level
8.
From a surface facing the terminal
9.
From a terminal facing a terminal
10. From an opening in a car port
(e.g. door or window) into dwelling
11. Vertically from a terminal on the
same wall
12. Horizontally from a terminal on the wall
Response FF80
- Installation
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
Tower Flue Guard, Model K1 . In case of difficulty seek
advice from:
Ensure that the guard is fitted centrally.
5. Where the terminal is fitted within 850mm (34") of a plastic
or painted gutter or 450mm (18") of painted eaves then an
aluminium shield at least 750mm (30") long should be fitted
to the underside of the gutter or painted surface.
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: 1990.
7. Where it is essential that the terminal wall plate is fitted, i.e.
wall thicknesses over 610mm (24") or with an inaccurately
cut hole, the minimum spacing in Table 3, Nos. 2, 3, 4, 5 and
6 would be 60mm (2.4") in order to allow the terminal wall
plate to be fitted.
IMPORTANT
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.
FLUE LENGTHS
The flue assembly can be adapted to accommodate flue lengths
up to 3 metres. Refer to Frame 10.
WATER CIRCULATION SYSTEM
Minimum Spacing
The boilers are designed for connection to pressurised, fully
pumped, sealed water central heating systems ONLY. The
domestic hot water (DHW) calorifier is incorporated within the
300 mm (12")
heat exchanger and only requires connection to the mains water
supply.
25 mm ( 1")
25 mm ( 1")
IMPORTANT. Ensure that the mains water supply pressure is
adequate to provide the required DHW flow rate. Refer to Table
25 mm ( 1")
1 on page 3.
25 mm ( 1")
25 mm ( 1")
The central heating system should be in accordance with
BS. 6798 and, in addition, for smallbore and microbore systems
BS. 5449.
300 mm (12")
600 mm (24")
The domestic hot water system should be in accordance with
BS. 5546 and BS. 6700.
1200 mm (48")
Copper tubing to BS 2871:1 is recommended for water carrying
1200 mm (48")
pipework and MUST be used for pipework carrying potable
water.
1500 mm (60")
Any soldered joints on potable water pipework MUST NOT be
300 mm (12")
made with solder containing lead.
Tower Flue Components Ltd.,
Vale Rise, Tonbridge, Kent TN9 1TB
Telephone No. 01732 351 555
. It is absolutely ESSENTIAL to ensure, in
GENERAL
9
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