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Instructions GSW, Modèle JW317

Fabricant : GSW
Taille : 338.9 kb
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Langue d'enseignement: en

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Air Supply CAUTIO. IF AN ALL-HOUSE VENTILATION FAN IS USED, A SEPARATE OUTSIDE AIR DUCT MUST BE USED AND DUCTED TO THE FURNACE ROOM AND/OR ROOM WHERE THE WATER HEATER IS LOCATED. In Canada: If the water heater is installed in a house built to the requirements of the .National Building Code of Canada, 1985., or a subsequent edition, the space shall be provided with a air inlets as outlined below, or have a mechanical air-supply system of sufficient equivalent capacity. If a mechanical air- supply system is used, it shall be interlocked to the appliance or equipment. NOTE: In unconfined spaces in buildings of conventional frame, brick, or stone construction built prior to the requirements of the .National Building Code of Canada, 1985., and not subsequently significantly air-tightened, infiltration is normally adequate to provide air for combustion and some ventilation; however, there may be notable exceptions. Houses built in accordance with the .National Building Code of Canada, 1985. (or subsequent edition), with exten sive exterior stucco coating, or with a sealed vapour barrier or other similar air sealing technique, will often be sufficiently airtight so that there is not sufficient air for both combustion and venting the products of combustion of an oil-fired appliance, or for replacing the air vented by other exhaust devices within the house. Outdoor Combustion & Ventilation Air (Unconfined space) If the water heater is installed in an unconfined space in a building having insufficient infiltration, additional air for combustion and ventilation shall be obtained from outdoors or from spaces freely communicating with the outdoors. Under these conditions, permanent opening(s) shall be provided so that the total air received through these openings will be at least as much as would be admitted by openings having a total free area of 4.5 cm2/kWh (1 in2/5000 Btu/h) of the total input rating of all oil-fired appliances. Outdoor Combustion & Ventilation Air (Confined space) A heater installed in a confined space that obtains all of its air for combustion and ventilation from outside the building shall be provided with two permanent openings, one near the top of the enclosure and another near the bottom. Each opening shall communicate directly or by means of ducts with the outdoors or to such spaces (such as a crawl space) that freely communicate with the outdoors, and shall be sized in accordance with .Air Duct Sizing.. Outdoor Combustion Air & Indoor Ventilation Air (Confined space) An appliance located in a confined space that obtains its combustion air from outdoors and ventilation air from within the conditioned space of the building shall be provided with two permanent openings for ventilation. One located near the top of the enclosure and another near the bottom. Each opening shall have a free area of not less than 19.5 cm2/kWh (1 in2/1000 Btu/h) of the total input rating of all . 6. appliances in the enclosure, freely communicating with interior areas that have in turn adequate infiltration from the outside. It shall also have a combustion air supply opening so that the total air received through the opening will be at least as much as would be admitted by openings having a total free area of 4.5 cm2/kWh (1 in2/5000 Btu/h) of the total input rating of all oil-fired appliances in the enclosure. Indoor Combustion & Ventilation Air (Confined space) A heater installed in a confined space and that obtains all of its air for combustion and ventilation from within the conditioned space of the building shall be provided with two permanent openings, one near the top of the enclosure and another near the bottom. Each opening shall have a free area of not less than 19.5 cm2/kWh (1 in2/1000 Btu/h) of the total input rating of all appliances in the enclosure, freely communicating with interior areas that have in turn adequate infiltration from the outside. Air Duct Sizing The air duct requirements shall be met by one of the following methods: 1. vertical duct(s) with a free area of not less than 5.5 cm2/kWh (1 in2/4000 Btu/h) of the total input rating of all appliances in the enclosure; 2. horizontal duct(s), with an equivalent length of less than 15 m (50 ft), having a free area of not less than 11 cm2/kWh (1 in2/2000 Btu/h) of the total input of all appliances in the enclosure; and 3. air openings that communicate directly with the outdoors, having a free area of not less than 5.5 cm2/kWh (1 in2/4000 Btu/h) of the total input rating of all appliances in the enclosure. NOTE: Duct runs that are primarily horizontal and that have an equivalent length greater than 15 m (50 ft) should be sized accordingly larger to provide the same air flow as would be provided by the requirements of method (3) above. In USA. Refer to .Standard for the Installation of Oil-Burning Equipment (NFPA 31). Vent and Exhaust Connection. General chimney requirements For a burner designed for natural draft connect the vent to a vertical chimney...

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