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0 • <br /> TERMINATION CLEARANCES SIDEWALL DIRECT VENT <br /> DIRECT VENT <br /> (using outdoor air for combustion) <br /> EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION <br /> Inside <br /> corner detail \ <br /> G Iiii <br /> / <br /> D / . " <br /> i <br /> E <br /> 4i <br /> �L eti\ B 1 <br /> I.---8,033.+.'�4'1 5----i� <br /> .�Gr'" I.— ° Rxed IJ f <br /> � 0 F �F>aa t <br /> able <br /> Closed 1 ,n M <br /> osed S Et <br /> dP� <br /> A <br /> -rgr` <br /> L! Regulator <br /> Slnd: <br /> vent oi.rirr <br /> ® =Vent terminal ( =Air supply inlet Q =Area where terminal is not permitted <br /> Figure 52 <br /> Vent terminal clearances for"Direct Vent" installations. Direct Vent configurations use outdoor air for combustion. <br /> CANADIAN INSTALLATIONS 1 US INSTALLATIONS 2 CANADIAN INSTALLATIONS 1 US INSTALLATIONS 2 <br /> Clearance to each side Clearance in accordance <br /> Clearance above grade, of center line extended Clearance in accordance with with local installation codes <br /> A veranda,porch,deck or 12 inches(30 cm) 12 inches(30 cm) I above meter/regulator local installation codes and the and the requirements of the <br /> balcony requirements of the gas supplier. <br /> assembly gas supplier. <br /> 6 in(15 cm)for <br /> 6 in(15 cm)for appliances appliances 510,000 <br /> Btuh(3 kW),9 in(23 Above a regulator within 3 ft(91 <br /> 5 10,000 Btuh(3 kW),12 in Clearance in accordance <br /> cm)for appliances cm)horizontally of the vertical <br /> B Clearance to window or (30 cm)for appliances>10,000 >10,000 Btuh(3 kW) Clearance to service center line of the regulator vent with local installation codes <br /> door that may be opened Btuh(3 kW)and 5 100,000 Btuh and 5 50,000 Btuh(15 regulator vent outlet outlet to a maximum vertical <br /> cm) and the requirements of the <br /> (30 kW),36 in(91 for gas supplier <br /> appliances>100,000Btuh(30 kW) kW),12 in(30 cm)for distance of 15 ft(4.5 m) <br /> appliances>50,000 <br /> Btuh(15 kW) <br /> 6 in(15 cm)for appliances 6 in(15 cm)for appliances <br /> Clearance to a non 5 10,000 Btuh(3 kW),9 in <br /> 510,000 Btuh(3 kW),12 in <br /> Clearance to mechanical air supply (30 cm)for appliances>10000 (23 cm)for appliances <br /> C permanently closed 6 inches(15 cm)' 6 inches(15 cm)' ,J inlet Into building or >10,000 Btuh(3 kW)and <br /> window combustion air inlet to Btuh(3 kW)and s 100,000,Btuh 5 50,000 Btuh(15 kW),12 in <br /> any other appliance (30 kW),36 in(91 cm)for appliances (30 cm)for appliances <br /> >100,000 Btuh(30 kW) >50,000 Btuh(15 kW) <br /> Vertical clearance to <br /> ventilated soffit located Clearance to a <br /> D above the terminal within 12 inches(30 cm)' 12 inches(30 cm)' K mechanical air supply 6 feet(1.83 m) 3 feet(91 cm)above if within <br /> a horizontal distance ofinlet 10 feet(3 m)horizontally <br /> 2 feet(61 cm)from the <br /> center line of the terminal <br /> Clearance above <br /> E Clearance to unventilated 12 inches(30 cm)' 12 inches(30 cm)' L paved sidewalk or 7 feet(2.13 m)t 7 feet(2.13 m)t' <br /> soffit paved driveway located <br /> on public property <br /> Clearance to outside Clearance under <br /> F corner 2 feet(60 cm)' 2 feet(60 cm)' M veranda,porch,deck, 12 inches(30 cm)1: 12 inches(30 cm)t' <br /> or balcony <br /> Clearance to inside 18 inches(45 cm)' 18 inches(45 cm)' <br /> corner <br /> 1 In accordance with the current CSA B149.1,Natural Gas and Propane Installation Code. <br /> 2 In accordance with the current ANSI Z223.1/NFPA 54,National Fuel Gas Code. <br /> t A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings. <br /> Where it may cause hazardous frost or ice accumulations on adjacent property surfaces. <br /> $Permitted only if veranda,porch,deck,or balcony is fully open on a minimum of two sides beneath the floor. <br /> *Clearance in accordance with local installation codes and the requirements of the gas supplier and the r-r facturer's installation instructions. <br />