24Kw Wall Hung Gas Fired Combi Boiler Stainless Steel Wall Hung Gas Boiler
Function of expansion tank: It is used to absorb and compensate the expansion and shrinkage of water in the system, also used as system water supply.
The role of the fan: The exhaust gas produced during combustion is discharged outdoors, and the fresh air outside is pumped into the combustion chamber, so that the combustion chamber is kept in a state of micro negative pressure and the flue gas is prevented from spreading indoors.