Carel Gas

In a gas humidifier, the production of humidity is obtained inside a boiler containing water that is heated to and then held at boiling temperature. The heat required to boil the water is provided by a heat exchanger heated by a type C pre-mix modulating room-sealed gas burner (standards compliant), which takes in air from and discharges the flue gas to the outside through suitable piping. This humidifier is therefore suitable for rooms where there is not sufficient fresh air.
The operation of the burner is completely automatic and does not use a pilot flame. All the operating phases of the burner are controlled by an electronic board, which also constantly checks the presence of the flame by ionisation. The output of the burner continuously responds to the request for heat, according to an ample modulation ratio (1:4). The variable speed fan, managed by the control board, together with the proportional gas valve, allows the output to be modulated (the flow-rate of gas is proportional to that of the air rd for combustion).
The water that evaporates over time is automatically replaced with water from the mains supply.

In stable operating conditions, the level of production required is automatically controlled by adjusting the thermal output of the burner. The salts introduced by the automatic refilling of the water are partly deposited as lime scale inside the boiler, contributing to the progressive depletion of the cylinder, and partly remain dissolved in the water. To avoid excessive accumulation of salts, a quantity of water is periodically and automatically drained and then replaced with fresh water.