(a)Except on a mobile food facility that only utilizes the water for handwashing purposes, a water heater or an instantaneous heater capable of heating water to a minimum of 120ºF, interconnected with a potable water supply, shall be provided and shall operate independently of the vehicle engine. On a mobile food facility that only utilizes the water for handwashing purposes, a water heater or an instantaneous water heater capable of heating water to a minimum of 100°F, interconnected with a potable water supply, shall be provided and shall operate independently of the vehicle engine.
(b)(1)Except as specified in paragraph (2), a water heater with a minimum capacity of three gallons shall be provided for mobile food facilities.
(2)A minimum water heater capacity of one-half gallon shall be provided for mobile food facilities approved for limited food preparation.