2.7Ventilation requirements in the UK are as shown in the table below:
A) Traditionally Built Homes
—Where the leakage is greater than 5m3/hour/m2.
—Ventilation normally required = 550mm2 per kW output over 5kW
Output (kw) |
| 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
|
|
|
|
|
|
|
|
|
|
|
| mm2 | None | None | 550 | 1100 | 1650 | 2200 | 2750 |
A | Additional | cm2 | None | None | 5.50 | 11.0 | 16.5 | 22.0 | 27.5 |
ventilation |
|
|
|
|
|
|
|
| |
|
| in2 | None | None | 0.89 | 1.77 | 2.66 | 3.55 | 4.40 |
B) Modern Construction Homes
—Where the leakage is less than 5m3/hour/m2.
—Ventilation normally required = 550mm2 per kW
Output (kw) |
| 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
|
|
|
|
|
|
|
|
|
|
|
| mm2 | 2200 | 2750 | 3300 | 3850 | 4400 | 4950 | 5500 |
B | Additional |
|
|
|
|
|
|
|
|
cm2 | 22.0 | 27.5 | 33.0 | 38.5 | 44.0 | 49.5 | 55.0 | ||
ventilation |
|
|
|
|
|
|
|
| |
|
| in2 | 3.55 | 4.40 | 5.32 | 6.21 | 7.10 | 7.99 | 8.87 |
2.8Permanent air vents should be
2.9If vents open into adjoining rooms or spaces there must be an air vent of at least the same size direct to the outside.
2.10Site the vents where cold draught is unlikely to cause discomfort. This can be avoided by placing vents near ceilings or close to the appliance, see diagram below.
2.11Extractor fans or cooker hoods must not be placed in the same room or space as this can cause the appliance to emit fumes into the room.
2.12Increase air supply provisions where a room contains multiple appliances.
2.13If any checks reveal problems do not proceed with the fitting of the appliance until they have been rectified.
3. Fitting Appliances on A boat
3.1If an appliance is to be fitted in a boat it must be done in accordance with the latest edition of BS 8511 (Code of Practice for the Installation of Solid Fuel Heating Appliances on Boats). The Code covers the design, installation
and operation of solid fuel heating appliances that are suitable for fitting into inland waterway boats, and gives guidance on product selection, design considerations, installation requirements, inspection and testing, as well as maintenance and safe use tips.
3.2Consideration should also be given to the requirements of the Boat Safety Scheme (BSS) to ensure the boat's insurance remains valid.
3.3The appliance should only be installed by a competent person with experience of the latest edition of BS 8511 and the Boat Safety Scheme (BSS).
3.4Secure the product to a suitably constructed non- combustible hearth.
3.5All open flued appliances can be affected by temporary atmospheric conditions which may allow fumes to enter the boat. An electronic carbon monoxide detector conforming to the latest edition of BSEN50292 must be fitted and maintained.
3.6Failure to safely install the appliance could endanger the boat and persons on board.
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