§ 8-178. Vents and flues.

(a)

Diameter of flue. Where more than one gas burning appliance is connected with the same flue, the diameter of such flue must be at least equal to the combined diameter of the vent outlets of such appliances.

(b)

Gas furnaces, water heaters. Gas furnaces and gas fired water heaters must be provided with vent and flue connections having a diameter at least as large as the vent connections on the appliance, and such vent must extend to open air at least two feet above the roof, and terminate with a cap, preferably screened.

(c)

Manner of installation of vents. All vents to gas burning appliances shall be installed in the manner required by the American Insurance Association, successor to the National Board of Fire Underwriters.

(d)

Down-draft devices required. All gas burning appliances having pilot burners must be provided with down-draft devices between the fixture and the vent.

(e)

Protection against back flow. When air or oxygen under pressure is used in connection with gas supply, effective means shall be provided to prevent the air or oxygen from going back into the gas piping.

(Code 1968, § 9-48; Ord. No. 198, § 9(a)—(d), (f), 6-7-1949)