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Liquid combustion byproducts of fuel-burning condensing appliances shall be collected and discharged to a plumbing fixture or disposal area in accordance with the manufacturer's instructions and Section 18-29-803. Condensate piping shall be of corrosion-resistant material and shall not be smaller than the drain connection on the appliance. Such piping shall maintain a horizontal slope in the direction of discharge of not less than one-eighth unit vertical in 12 units horizontal (1-percent slope).
(Added Coun. J. 10-14-21, p. 37722, Art. III, § 24)
Condensate drain systems shall be provided for equipment and appliances containing evaporators or cooling coils. Condensate drain systems shall be designed, constructed and installed in accordance with Sections 18-29-314.2.1 through 18-29-314.2.5.
(Added Coun. J. 10-14-21, p. 37722, Art. III, § 24)
Condensate from all cooling coils and evaporators shall be conveyed from the drain pan outlet to an appropriate place of disposal. Such piping shall maintain a horizontal slope in the direction of discharge of not less than one-eighth unit vertical in 12 units horizontal (1-percent slope). Condensate shall not discharge into a street, alley or other area so as to cause a nuisance.
(Added Coun. J. 10-14-21, p. 37722, Art. III, § 24)
Components of the condensate disposal system shall be cast iron, galvanized steel, copper and copper alloy, cross-linked polyethylene, polyethylene, CPVC, PVC or polypropylene pipe or tubing. Components shall be selected for the pressure and temperature rating of the installation. Joints and connections shall be made in accordance with the applicable provisions of Chapter 7 relative to the material type. Condensate waste and drain line size shall be not less than 3/4-inch (19.1 mm) internal diameter and shall not decrease in size from the drain pan connection to the place of condensate disposal. Where the drain pipes from more than one unit are manifolded together for condensate drainage, the pipe or tubing shall be sized in accordance with Table 18-29-314.2.2.
EQUIPMENT CAPACITY | MINIMUM CONDENSATE PIPE DIAMETER |
Up to 20 tons of refrigeration | 3/4 inch |
Over 20 tons to 40 tons of refrigeration | 1 inch |
Over 40 tons to 90 tons of refrigeration | 1 1/4 inch |
Over 90 tons to 125 tons of refrigeration | 1 1/2 inch |
Over 125 tons to 250 tons of refrigeration | 2 inch |
For SI: 1 inch = 25.4 mm, 1 ton of capacity = 3.517 kW.
(Added Coun. J. 10-14-21, p. 37722, Art. III, § 24)
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