Un-wanted Gravity or Convection Circulation of Hot Water. If electrical power switch to a hot water heating boiler is in the on position and the room thermostat is set below the current room temperature, the heating system (hot water or steam) boiler or (warm air) furnace should not run.[1] If you need more help see ELECTRICAL POWER SWITCH FOR HEAT
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The water tube boilers are used for high-pressure boilers. Fuel is burned inside the furnace, creating hot gas which heats water in the steam-generating tubes. The GETABEC water tube Boiler is a natural circulation boiler without any forced water flow, designed under the license of ERK Eckrohrkessel GmbH, Germany.
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