Gas boilers are divided into two groups by type of ignition. The principle of operation of this installation is based on the supply of sparks to the firn, which should constantly burn. This spark is supplied by electronic or manual ignition, hence two varieties. Gas boilers are divided into functional capabilities into two main groups — single -circuit and double -circuit. The first group includes systems capable only to the simultaneous supply of heat or water supply. The second group includes systems that can simultaneously supply hot water and heat the room.
This spark
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