fotograf ślubny gdańsk


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Added: 2018-06-21
Category: boilers
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Instead of electricalresistance elements gasfired

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 through a hollow core at the center of the tank or around the tank sides because fuel-fired heaters.

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