Heating and Cooling Equipment
Baltimore City Code, Building Codes, Part X, Section 1411
in effectSection 1411. Heating and Cooling Equipment
1411.1 to 1411.2 {As in IRC}
1411.3 Condensate disposal. {As in IRC}
1411.3.1 Auxiliary and secondary drain systems. {As in IRC}
1411.3.2 Drain pipe materials and sizes.
Components of the condensate disposal system must be cast iron, galvanized steel, copper, polyethylene, ABS, CPVC, or PVC pipe or tubing. All components must be selected for the pressure and temperature rating of the installation. Condensate waste and drain line size may not be less than ¾- inch (19 mm) internal diameter and may 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 must be sized in accordance with an approved method. All horizontal sections of drain piping must be installed in uniform alignment at a uniform slope.
1411.3.3 Drain line maintenance. {As in IRC}
1411.3.4 Appliances, equipment, and insulation in pans. {As in IRC}
1411.4 to 1411.8 {As in IRC}
Source: City of Baltimore Department of Legislative Reference, City of Baltimore Law Library (codes.baltimorecity.gov; Open Law Library bulk XML)URL: https://codes.baltimorecity.gov/us/md/cities/baltimore/code/building-codes/X/1411Fetched: 10/25/2026