Gas-fired batch booster water heater apparatus

A gas-fired batch booster water heater apparatus for supplying sanitizing water to a dish washing machine, the gas-fired batch booster water heater comprising:

• a chamber member capable of holding water having an inlet, an outlet, an inner heat radiating surface and an outer heat receiving surface;
• a gas fired burner positioned in close proximity to the chamber member, the gas fired burner capable of supplying heating the heat receiving surface of the chamber and, in turn, the water;
• a first circuit associated with the inlet and the outlet, the first circuit including means for circulating the water within the chamber member;
• a second circuit associated with the first circuit, the second circuit being capable of introducing water into the chamber member for heating and removing water from the chamber member to a dish washing machine upon heating of the water;
• a check valve associated with the first circuit and the second circuit;
• means for sensing the flow of water through the second circuit;
• and
• means associated with the sensing means for controlling the check valve, to, in turn, control the flow of water through either of the first and the second circuits.