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CHAPTER 5 WATER CHEATERS 501.0 General. (1) Fuel-burning water heaters shall be permitted to be 501.1 Applicability. The regulations of this chapter shall installed in a closet located in the bedroom or bathroom govern the construction, location, and installation of fuel- provided the closet is equipped with a listed, gasketed burning and other types of water heaters heating potable door assembly and a listed self-closing device.The self- water, together with chimneys, vents, and their connectors. closing door assembly shall meet the requirements of The minimum capacity for storage water heaters shall be in Section 504.1.1. The door assembly shall be installed accordance with the first hour rating listed in Table 501.1(1). with a threshold and bottom door seal and shall meet the No water heater shall be hereinafter installed that does not requirements of Section 504.1.2.Combustion air for such comply with the manufacturer's installation instructions and installations shall be obtained from the outdoors in accor- the type and model of each size thereof approved by the dance with Section 506.4. The closet shall be for the Authority Having Jurisdiction.A list of accepted water heater exclusive use of the water heater. appliance standards are referenced in Table 501.1(2). Listed (2) Water heater shall be of the direct vent type. [NFPA appliances shall be installed in accordance with the manu- 54:10.28.1(2)] facturer's installation instructions. Unlisted water heaters 504.1.1 Self-Closing Doors. Self-closing doors shall shall be permitted in accordance with Section 504.3.2. swing easily and freely,and shall be equipped with a self- closing device to cause the door to close and latch each 502.0 Permits. time it is opened.The closing mechanism shall not have a hold-open feature. 502.1 General. It shall be unlawful for a person to install, 504.1.2 Gasketing. Gasketing on gasketed doors or remove, or replace or cause to be installed, removed, or frames shall be furnished in accordance with the pub- replaced a water heater without first obtaining a permit from lished listings of the door, frame, or gasketing material the Authority Having Jurisdiction to do so. manufacturer. Exception: Where acceptable to the Authority Having 503.0 Inspection. Jurisdiction, gasketing of non-combustible or limited- 503.1 Inspection of Chimneys or Vents. This inspec- combustible material shall be permitted to be applied to tion shall be made after chimneys, vents, or parts thereof, the frame,provided closing and latching of the door are authorized by the permit,have been installed and before such not inhibited. vent or part thereof has been covered or concealed. 504.2 Vent. Water heaters of other than the direct-vent type 503.2 Final Water Heater Inspection. This inspection shall be located as close as practical to the chimney or gas vent shall be made after work authorized by the permit has been 504.3 Clearance. The clearance requirements for water installed.The Authority Having Jurisdiction will make such heaters shall comply with Section 504.3.1 or Section 504.3.2. inspection as deemed necessary to be assured that the work 504.3.1 Listed Water Heaters. The clearances shall has been installed in accordance with the intent of this code. not be such as to interfere with combustion air,draft hood No appliance or part thereof shall be covered or concealed clearance and relief,and accessibility for servicing.Listed until the same has been inspected and approved by the water heaters shall be installed in accordance with their Authority Having Jurisdiction. listings and the manufacturer's installation instructions. 504.3.2 Unlisted Water Heaters. Unlisted water 504.0 Water Heater Requirements. heaters shall be installed with a clearance of 12 inches 504.1 Location.Water heater installations in bedrooms and (305 mm)on all sides and rear.Combustible floors under bathrooms shall be in accordance with one of the following unlisted water heaters shall be protected in an approved [NFPA 54:10.28.1]: manner. [NFPA 54:10.28.2.2] TABLE 501.1(1) FIRST HOUR RATING1 Number of Bathrooms 1 to 1.5 2 to 2.5 3 to 3.5 Number of Bedrooms 1 2 3 2 3 4 5 3 4 5 6 First Hour Rating,2 Gallons 42 54 54 54 67 67 80 67 80 80 80 For SI units:1 gallon=3.785 L Notes: 1 The first hour rating is found on the"Energy Guide"label. 2 Solar water heaters shall be sized to meet the appropriate first hour rating as shown in the table. 2015 UNIFORM PLUMBING CODE