Danfoss EPU 2370, Instructions Manual, Page: 35 / 48

BC-HM
VI.72.M4.02

Danfoss 11/97 35
- With normal and reduced
temperature, total stop function in
P1.2 has the following influence:
0 Reduced temperature: control
according to reduced setpoint
(P9.0).
Fan constantly cut in.
1 Normal temperature: valve closes
and pump stops if the following
two conditions are fulfilled.
- Room temperature 1 degree
higher than required
temperature.
- Water temperature limited to
minimum setting.
Reduced temperature: the valve
is closed and fan stopped until
room temperature has fallen to
the required temperature. The
valve is then opened and fan
started until the temperature has
risen 1 degree.
- Relay status for different operating
situations with this system is as
follows:
Operating
Relay 1 Relay 2
condition
Standby 0 1
P1.2 = 0 1 time switch*)
Reduced
P1.2 = 1 0 time switch*)
Normal 1 time switch*)
Frost 0 1
*
)
Relay contact R2 open with reduced
temperature.
0 = open relay contact
1 = closed relay contact