Each installation shall conform to the following:
A. The vent pipe or connection must not be smaller than the size indicated by the vent collar of a gas designed appliance.
B. On conversion burners, vent size and design shall comply with AGA specifications, paragraph 5.5, 1954 issue or the latest version thereof.
C. Downdraft diverters or draft hoods shall not be used on side arm or nonautomatic waterheaters.
D. Appliances, wherever possible, shall be connected directly to a flue. In cases where a flue is not available, vent must be carried to the outside over and above any point that would interfere with proper venting of appliance.
E. Where the appliance has more than one vent, the vent pipe must equal the combined area of the vents for which it acts as a common connection to the flue except where manufacturer's specifications do not provide, but do have AGA and Underwriter's approval.
F. The horizontal vent should be as short as possible and therefore, the appliance should be located as near the chimney as is practical.
G. The vent must maintain a pitch or rise from the appliance to the flue or chimney. On horizontal runs, pitch or rise of at least one-quarter inch to the foot must be maintained.
H. To avoid downdrafts on appliances with an automatic pilot, install a downdraft diverter or draft hood adjacent to the appliance. If conditions warrant, place an approved chimney top on top of the flue.
I. All vents passing through wooden walls or partitions shall be of Johns Mannville Transite or equivalent, fireproof, waterproof, noncorrosive material.
J. Radiant fires shall not be installed without a positive vent which must be carried to a safe distance above the roofline.
K. Water heaters shall not be installed in bathrooms, kitchens, or closets without positive vents which must be carried to a safe distance above the roofline.
L. Warm heater vents shall not be connected to stacks leading to flue, but must be always directly connected to flue with separate vent.
M. All gas designed boilers, water heaters and furnaces shall be equipped with draft hood adjacent to appliance.
N. All incinerator vents are to be installed below the vents of the other appliances.
O. Although no permit is required hereunder, all gas heated clothes dryers must be vented to outside of house.
P. All gas appliances and piping thereto, and venting thereof, shall be so installed as to permit the proper and safe operation of the appliance. No compressed gas or liquified gas shall be stored inside the fire limits.
(Prior code § 14.301(e)).