Assessments - 2, GPA: 4 ( )

Fabricante : Sears Arquivo Tamanho: 2.69 mb Arquivo Nome : Língua de Ensino:

In Canada, use the NSCNGPIC, appendix C, section 10. Corrugated metal vent systems installed with bends or offsets require additional reduction of 5% of the vent capacity for each bend up to 45° and 10% of the vent capacity for each bend from 45 ° up to 90 ° . NOTE: Two (2) 45 ° elbows are equivalent to one (1) 90 ° elbow. 6. Horizontal Venting Category I Furnaces With External Power Venters In order to maintain a Category ] classification of fan-assisted furnaces when vented horizontally with sidewall termination, a power venter is REQUIRED to maintain a negative pressure in the venting system. In the U.S.: Per the NFGC, a listed power venter may be used, when approved by the authority having jurisdiction. In Canada: Only power venters approved by the appliance manufacturer and where allowed by the authority having jurisdiction may be used Please consult the Fields Controls Co. or Tjernlund Products, Inc. for power venters certified for use with our furnaces. Combined Venting into a Masonry Chimney Venting into a masonry or concrete chimney is only permitted as outlined in the NFGC or NSCNGPIC venting tables. Follow all safe venting requirements. Note: See section "7. Masonry Chimney Venting". Vent Termination Venting Through a Non-Combustible and Combustible Wall Consult External Power Venter manufacturer instructions. Select the power venter to match the Btuh input of the furnace being vented. Follow all of the Power Venter manufacturer's installation requirements included with the power venter for: • venting installation, • vent terminal location, • preventing blockage by snow, • protecting building materials from degradation by flue gases, • see Figure 10 for required vent termination. NOTE: It is the responsibility of the installer to properly terminate the vent and provide adequate shielding. This is essential in order to avoid water/ice damage to building, shrubs and walkways. 441 01 2613 02 [_ Other than Direct Vent Termination Clearance iiiiiiiiiiiiiiiiiiiiiiiiiiiii i i! ii ii ! i ! !i ! ii i i i i i i i i i i i AREA WHERE TERMINAL IS NOT PERMITED IVIVENTTERMINAL AIRSUPPLVINLET Item Clearance Descriptions Canadian Installation (1) U.S. Installation (2) A Clearance above grade, veranda, porch, deck, balcony, or 12" (30cm) # 12" (30 cm) anticipated snow level B Clearance to a window or door that may be opened 6" (15 cm) for appliances _< 10,000 BTUH (3kW), 12" (30 4' (1.2 m) below or to the side of the opening. 1' (30 cm) cm) for appliances > 10,000 Btuh (3 kW) and _<100,000 Btuh above the opening. (30 kW), 36" (91 cm) for appliances > 100,000 Bluh (30 kW) C Clearance to a permanently closed window 9 Vertical clearance to a ventilated soffit located above the terminal within a horizontal distance of 2' (61cm) from the centedine of the terminal E Clearance to an unventilated soffit F Clearance to an outside corner G Clearance to an inside corner H Clearance to each side of the centedine extended above elec-3' (91 cm) within 15' (4.5 m) above the meter/regulator 3' (91 cm) within 15' (4.5 m) above the meter/regulator trical meter or gas service regulator assembly assembly assembly I Clearance to service regulator vent outlet 3' (91 cm) J Clearance to non-mechanical air supply inlet to building orthe 6" (15cm)forappliances_<10,000BTUH(3kW),12" (30 4' (1.2 m) below or to the side of opening: 1' (30 cm) above combustion air inlet to any other appliance cm)forappliances>10,000Btuh(3kW)and _<100,000Btuh opening, (30kW),36" (91cm)forappliances>100,000Btuh(30kW) K Clearanceto amechanicalair supplyinlet 6' (1.83m) 3' (91 cm) above if within 10' (3m) horizontally L Clearanceundera veranda,porch,deck,or balcony 12" (30cm) + M Clearance to each side of the centedine extended above or * below vent terminal of the furnace to a dryer or water heater vent, or other appliance's direct vent intake or exhaust. N Clearance from a plumbing vent stack 3' (91 cm) 3'(01cm) 0 Clearance above a paved sidewalk or paved driveway located 7' (2.13 m) 7'(2.13m) on public properly. (I.) InaccordancewiththecurrentCSAB149.1,NaturalGasandPropanelnstaHationCode (2.) In accordance with the current ANSI Z223.11NFPA 54, Nafional Fuel Gas Code # 18" (46 cm) above roof surface + Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor. For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, clearances shall be in accordance with local installation codes and the requirements of the gas supplier and the manufacture's installation instructions. A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings. Notes: 1. The vent for this appliance shall not terminate a. Over public walkways; or b. Near soffit vents or crawl space vents or other areas where condensate or vapor could create a nusiance or hazard or property damage; or c. Where condensate vapor could cause damage or could be detrimental ...

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