REQUIREMENTS DUE TO LOCATION
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 Section 502.2 Water heaters installed in garages.
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Water heaters having an ignition source shall be elevated such that the source of ignition is not less than 18 inches (457mm) above the floor. |
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| Section 502.4 Prohibited location.
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| Gas-fired water heaters shall not be installed in a sleeping room, bathroom or a closet accessed through a sleeping room or bathroom. EXCEPTION: Direct vent water heater. |
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| Section 502.5 Water heaters installed in attics.
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| Attics containing a water heater shall be provided with an opening and unobstructed passageway large enough to allow removal of the water heater. The passageway shall not be less than 30 inches (762mm) high and 22 inches (559mm) wide and not more than 20 feet (6096mm) in length when measured along the centerline of the passageway from the opening to the water heater. The passageway shall have continuous solid flooring not less than 24 inches (610mm) wide. A level service space at least 30 inches (762mm) deep and 30 inches (762mm) wide shall be present at the front or service side of the water heater. The clear access opening dimensions shall be a minimum of 20 inches by 30 inches (508mm by 762mm) where such dimensions are large enough to allow removal of the water heater. |
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| Section 504.7 Required Pan.
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| Where water heaters or hot water storage tanks are installed in locations where leakage of the tanks or connections will cause damage, the tank or water heater shall be installed in a galvanized steel pan having a minimum thickness of 24 gage, or other pans approved for such use. |
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| Section 504.7.1 Pan size and drain.
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| The pan shall not be less than 1.5 inches (38mm) deep and shall be of sufficient size and shape to receive all dripping or condensate from the tank or water heater. The pan shall be drained by an indirect waste pipe having a minimum diameter of 3/4 inch (19mm). |
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| Section 504.7.2 Pan drain termination.
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| The pan drain shall extend full size and terminate over a suitably located indirect waste receptor or floor drain or extend to the exterior of the building and terminate not less than 6 inches (152mm) and not more than 24 inches (610mm) above the adjacent ground surface. |
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REQUIREMENTS FOR ALL WATER HEATERS
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| Section 607.3 Thermal expansion control.
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A means of controlling increased pressure caused by thermal expansion shall be provided where required in accordance with Sections 607.3.1 and 607.3.2.
NOTE FROM US: THERMAL EXPANSION DEVICE-Thermal expansion of heated water may occur wherever potable water is heated in a closed system (when the potable water is isolated from the public water supply by one-way valve: Pressure Reducing Valve, Backflow Preventer, Check Valve, etc.). Thermal Expansion tanks are designed to absorb thermal expansion and to maintain a balanced pressure throughout the potable water supply system. They are used to prevent plumbing system and/or water heater damage and unnecessary relief valve discharge caused by excessive pressure from thermal expansion.
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| Section 607.3.1 Pressure reducing valve.
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| For water service system sizes up to and including 2 inches (51mm), a device for controlling pressure shall be installed where, because of thermal expansion, the pressure on the downstream side of a pressure-reducing valve exceeds the main supply pressure. A pressure-reducing valve with an integral bypass check valve or other device shall be installed to satisfy this requirement. |
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| Section 607.3.2 Backflow prevention device or check valve.
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| Where a backflow prevention device, check valve or other device is installed on a water supply system utilizing storage water heating equipment such that thermal expansion causes an increase in pressure, a device for controlling pressure shall be installed. |
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PLUMBING FIXTURES
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| Section 604.4 Maximum flow and water consumption.
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The maximum water consumption flow rates and quantities for all plumbing fixtures and fixture fittings shall be in accordance with code.
Water closet/Toilet has a maximum flow rate of 1.6 gallons per flushing cycle. Shower head has a maximum flow rate of 2.5 gpm at 60psi. Lavatory/Sink (private) has a maximum flow rate of 2.2 gpm at 60psi. Sink faucet has a maximum flow rate of 2.2 gpm at 60psi.
ALL NEW PLUMBING FIXTURES HAD FLOW RESTRICTIONS PASSED BY CONGRESS IN 1992. IF YOU ARE REPLACING FIXTURES OLDER THAN 1992, YOU WILL NOW HAVE A REDUCED VOLUME OF WATER SUPPLIED BY THE NEW FIXTURE. |
