Dantherm 352423, User Manual, Page: 7 / 92

5
060798
•
Ve
rs
ion
1.
4
•
22.01.2
01
9
en
Product description,
continued
Air flow The following describes and illustrates the air flow in a HCH 5 and HCH 8:
No. Description

Outside air (T1)
Outside air which enters the heat exchanger ready for
heating by the extract air from the house (

).

Supply air (T2)
The supply air is heated by the means of heat recircula-
tion from the extract air (

).

Extract air (T3)
”Polluted” and warm extract air is used to heat up the
outside air (

) by the means of heat exchange in the
heat exchanger.

Exhaust air (T4)
The heat of the extract air is used to heat up the cold
outside air (

). The exhaust air is led out of the house.



