(A) Permits. A permit must be obtained for the installation of any mechanical work.
Exceptions: Any portable equipment, minor repairs, self-contained refrigeration systems, range hoods or ductwork less than 30' length.
(B) Licenses. All mechanical contractors engaged in the performance of HVAC work shall be licensed per the Illinois Municipal Code 11-32-1.
(C) Alteration of equipment. It shall be unlawful for any person to alter, disturb or change any equipment or to permit any equipment to be altered, disturbed, or changed unless done in conformity with the regulations in this code.
(D) Exhaust systems.
(1) Every bathroom containing a shower shall be ventilated by a mechanical ventilation system directly to the outside atmosphere. All exhaust vent(s) shall terminate in an approved fitting at the exterior of the building in order to help locate the termination point.
(2) Clothes dryer vents shall be a minimum .016" thick rigid metal duct and shall be sealed with approved metallic tape (not duct tape or screws). A flexible vent connector shall not be installed in walls or lengths greater than 6 feet.
(3) All ductwork in an unconditioned space shall be insulated ductwork.
(E) Equipment installation.
(1) HVAC equipment shall not be installed in attic or crawl space areas unless listed and labeled for installation in such spaces.
(2) Attic: Where equipment is installed in an attic, a permanent stairway or an approved pull down stair assembly shall be installed along with a walkway to the equipment. All walkways to the equipment shall be a minimum of 24 inches wide.
(3) Crawl space: All equipment located in a crawl space shall be raised at least eight inches above the slab. Any equipment suspended from the floor above shall have a ground clearance of at least eight inches.
(4) Interior installations: All interior installations other than in crawl spaces (see item (3) above) shall be raised a minimum of three inches above the adjoining floor.
Exception: Downflow furnaces.
(F) HVAC Amendments.
(1) All buildings shall have a readily accessible, visible external shutoff valve located on the building for liquid or vapor fuels.
(2) All vents for combustible fuel appliances shall terminate a minimum of 35 inches above final grade.
(3) High efficient furnace and water heaters with sealed combustion chambers shall take combustion air from the outside.
(4) Flexible gas line connectors shall not be permitted for furnace and water heater installations.
(5) Corrugated stainless steel tubing shall not be permitted in any application.
(Ord. 21-102, passed 8-19-2021)