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Fuel burning space heating and/or water heating equipment with a combined input rating greater than 150,000 Btu/hour shall be provided with air from outdoors for combustion and dilution using the methods described in Section 18-28-703.3.
(Amend Coun. J. 11-9-16, p. 36266, § 36)
Exception: Single-family and two-family dwellings (including townhouses) are not required to use outdoor air for combustion and dilution. Such dwellings shall be provided with air for combustion and dilution in accordance with Sections 18-28-702, 18-28-703.2, or 18-28-703.3.
Fuel burning heating and/or water heating equipment with a combined input rating less than or equal to 150,000 Btu/hr shall be provided with air for combustion and dilution in accordance with Sections 18-28-703.2 or 18-28-703.3. Fuel burning appliances typically used on an intermittent basis, such as clothes dryers, residential cooking equipment, and/or fireplaces shall be provided with air for combustion and dilution in accordance with Section 18-28-703.2.