A return flow sensor (immersion sleeve or strap-on sensor) must be installed for frost protection of PWW-
NHR. The heating circuit of the supply air re-heating exchanger may also be operated with antifreeze.
The fans will stop when a frost alarm triggers.
A return flow sensor (immersion sleeve or strap-on sensor) must be installed for frost protection of PWW-
NHR. The heating circuit of the supply air re-heating exchanger may also be operated with antifreeze.
The fans will stop when a frost alarm triggers.
With room temperature control configured, the room temperature controller determines a set point supply air
temperature based on the difference between set point temperature and actual temperature, which is then
regulated by a downstream supply air temperature controller. With supply air temperature control configured,
the higher level room temperature control falls away and the supply air temperature is regulated directly via a
set point supply air temperature.
Primary parameters:
PWW NHR 1
El. NHR 2
O P E R A T I N G A N D I N S T A L L A T I O N I N S T R U C T I O N S L G
7 5 0 - L G 6 0 0 0
P A G E
1 5
