boiler repairs norbury

  • Instead of electricalresistance
    Instead of electricalresistance
    Added: 2018-06-15 | Category: boiler installations | Comments: 0

    Instead of electrical-resistance elements, gas-fired heaters have a burner that's fed gas through a control valve and a thermostat switch in an oil-fired heater, the burner is similar to that found on an oil-fired furnace in either case, the burner is usually situated to throw a flame under the tank the exhaust gases are vented either.


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