Ordinance 531-78 - Laserfiche WebLink

• • 1 (c) Type B: No Type B gas vent shall terminate less than one foot (1') above the roof through which is passes, nor less than 2 four feet (4') from any portion of the building which extends at an angle of more than 45 degrees upward from the 3 horizontal. 4 (d) Type L: No Type L venting system shall terminate less than two feet (2') above the roof through which it passes, not less 5 than four feet (4') from any portion of the building which extends at an angle of more than 45 degrees upward from 6 the horizontal. 7 (e) Venting System: No venting system shall terminate less than four feet (4') below or four feet (4') horizontally from, 8 nor less than one foot (1') above any door, window, or gravity air inlet into any building. 9 (f) No venting system shall terminate less than three feet (3') 10 above any forced air inlet located within ten feet (10') or less than four feet (4') from any property line except a 11 public way. 12 Section 2318 - Area of Venting System 13 Every venting system shall have an internal cross-sectional area of not less than the area of the vent collar on the waterheater unless the venting 14 system has been designed in accordance with Section 2312 (d) in no case shall such area be less than 7 square inches, unless the venting system is 15 an integral part of a listed water heater. 16 Section 2319 - Multiple Appliance Venting 17 (a) Two or more oil or listed gas-burning appliances may be connected to one common gravity-type venting system 18 provided the appliances are equipped with an approved primary safety control capable of shutting off the burners 19 and the venting system is designed to conform with Section 2312 (d) of this Code or complies with the following 20 requirements: 21 1. Appliances which are connected to a common venting system shall be located within the same story of the 22 building, except engineered venting systems as provided in Section 2312 (d). 23 2. Two or more connectors shall not enter a common 24 venting system unless the inlets are offset in such a manner that no portion of any inlet is opposite the 25 other inlets. 26 3. Where two or more appliances are connected to one venting system, the venting system area shall be not 27 less than the area of the largest vent connector plus 50 per cent of the areas of the additional vent 28 connectors. An oval vent may be used provided its area is not less than the area of the round pipe for 29 which it is substituted. 30 4. Each vent connector of a multiple venting system shall have the greatest possible rise consistent with 31 the headroom available between the draft hood outlet, the barometric damper or the fuel collar and 32 the point of interconnection to a manifold, to a common vent or to a chimney. - 21 -