Stimmen - 2, Durchschnittliche Bewertung: 3.5 ( )

Hersteller: Procom Dateigröße: 280.62 kb Dateiname: 4c70d047-7729-4f77-a1a7-2fdb7badf91a.pdf Unterrichtssprache:

Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconfined space. This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. * Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them. DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if you have a Confined or Unconfined Space* Use this worksheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms. 1. Determine the volume of the space (length.width.height). Length.Width.Height= cu.ft. (volume of space) Example: Space size20ft. (length).16ft. ( width).8ft. (ceiling height)=2560cu. ft. (volume of space) If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space. 2. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support. (volume of space).50 cu. ft.=(Maximum Btu/Hr the space can support) Example: 2560 cu. ft. (volume of space).50 cu.ft.=51.2 or 51.200(maximum Btu/Hr the space can support) WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANS Z223.1, Section 5.3 or applicable local codes. 4 3. Add the Btu/Hr of all fuel burning appliances in the space. Vent-free heater Btu/Hr Gas water heater* Btu/Hr Example: Gas furnace Btu/Hr Gas water heater 40,000 Btu/Hr Vented gas heater Btu/Hr Vent free heater + 20,000 Btu/Hr Gas Fireplace logs Btu/Hr Total = 60,000 Btu/Hr Other gas appliances* + Btu/Hr Total = Btu/Hr *Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors. 4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used. Btu/Hr (maximum the space can support) Btu/Hr (actual amount of Btu/Hr used) Example : 51,200 Btu/Hr(maximum the space can support) 60,000 Btu/Hr(actual amount of Btu/Hr used) The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support. You must provide additional fresh. Your options are as follows: A. Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation Air From inside Building, page 5. B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6 . C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined. If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no additional fresh air ventilation. VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two spaces (see options 1 and 2, Figure 2). You can also remove door into adjoining room (see option 3, Figure 2). Follow the National Fuel Gas Code NFPA 54/ANS Z223.1. Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts WARNING: Rework worksheet, adding the space of the adjoining unconfined space. The combined spaces must have enough fresh air to supply all appliances in both spaces. Figure 2 -Ventilation Air from Inside Building 5 Figure 3 -Ventilation Air from Outdoors INSTALLATION NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source. WARNING: A qualified service person must install heater. Follow all local codes. CHECK GAS TYPE Use only Propane/LP gas. If your gas supply is not Propane/LP, do not install heater. Call dealer where you bought heater for proper type heater. INSTALLATION NEEDS Before installing heater, make sure you have the items listed below. . piping (check local codes) sealant (resistant to Propane/LP gas) equipment shutoff valve* . ground joint union . test gauge connection* . sediment trap . tee joint . pipe wrench VENTILATION AIR Ventilation Air From Outdoors P...

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