External water heater mounted on the supply air side, bolt-on to the ventilation unit.
For systems up to 110°C and 1.0 MPa (10 bar).
The water heater is connected downstream the ventilation unit, its purpose is to increase the supply air temperature. Heater copper/aluminium with thick-walled copper pipes and pressed-on aluminium lamellas.
It contains copper headers and connection sockets with an outer thread according to DIN to achieve small air resistance.
