hot water coil 1.Heating of the air supplied to the ... the air after the dehumidification process Used if a heating water system is available (local boiler or municipal heating system) ... 21÷650 1/2Collector diameter: VSDNMaterialConnection10,1520brassthread R3/4"2130,40 (≤4R)25brassthread R1"30,4055,75 (≤4R)100,120,150 ... reduction of the heating capacity by between 10 and 20% Water Heater/hot water coil