Bathrooms
This range of appliances is rated IP 1XB.
The boiler may be installed in any room or internal space, although particular attention is drawn to the requirements of the current I.E.E. (BS.7671) Wiring Regulations and, in Scotland, the electrical provisions of the building regulations applicable in Scotland with respect to the installation of the boiler in a room or internal space 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 :
zBS. 6798.
zThe 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'.
zFor 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.
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.
Terminals guards are available from boiler suppliers - ask for TFC Flue Guard, Model No. K6-round, plastic coated. 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.
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.
Table 3 - Balanced Flue Terminal Position
Flue Terminal Positions | | Min. Spacing* |
| | | |
1. | Directly below or alongside an opening | | |
| window, air vent or other ventilation opening. | 300mm (12") | |
2. | Below guttering, drain pipes or soil pipes. | 25mm ( 1")* |
| | BS5440-1 2000 | 75mm (3") |
3. | Below eaves. | | 25mm (1")* |
| | BS5440-1 2000 | 200mm (8") |
4. | Below balconies or a car port roof. | 25mm (1")* |
| | BS5440-1 2000 | 200mm (8") | |
5. | From vertical drain pipes or soil pipes. | 25mm (1")* |
| | BS5440-1 2000 | 150mm (6") | |
6. | From an internal or external corner or to a | 25mm (1")* |
| boundary along side the terminal. | BS5440-1 2000 | 300mm (12") | |
7. | Above adjacent ground, roof or balcony level. | 300mm (12") | |
8. | From a surface or a boundary facing the terminal. | 600mm (24") | |
9. | From a terminal facing a terminal. | | 1,200mm (48") |
10. | From an opening in a car port | | | |
| (e.g. door or window) into dwelling. | 1,200mm (48") | |
11. | Vertically from a terminal on the same wall. | 1,500mm (60") | |
12. | Horizontally from a terminal on the wall. | 300mm (12") |
| Vertical Terminals | | |
13. | Above the roof pitch with roof slope of all angles. | 300mm (12") | |
| Above flat roof. | | 300mm (12") | |
14. | From a single wall face. | | 600mm (24") |
| From corner walls. | | 1000mm (40") |
| Twin Flue Applications | | |
15. | Centre distance between air inlet and flue | | |
| outlet ducts. | | 120mm (5") |
*Only one reduction down to 25mm is allowable per installation otherwise BS5440-1 2000 dimensions must be followed.
