Device Control; Heater Control; Chiller Control - Rehau NEA SMART 2.0 Service Manual

9.5

Device control

9.5.1

Heater control

To find in App:
Home  More  Settings  Installer  Device  Heating Unit
Key Text in parameter menu Comment
DH1 Minimum demand time
heating device
HE2 Position of mixing valve for
heating demand
HE3 Hysteresis of mixing valve
position for heating
demand signal
DH4 Delay time heater demand
signal
DH5 Heater blocking time
before restart
Tab. 9-7 Parameter heater control
9.5.2

Chiller control

To find in App:
Home  More  Settings  Installer  Device  Cooling Unit
Key Text in parameter menu Comment
DC1 Minimum demand time for
chiller
DC2 Position of mixing valve for
cooling demand
DC3 Hysteresis of mixing valve
position for cooling
demand signal
DC4 Delay time for chiller
demand signal
DC5 Chiller blocking time
before restart
Tab. 9-8 Parameter chiller control
Minimum time the heating device gets started for in
minutes
The opening of mixing valve of mixed circuit has to
exceed this value before the heating device is deman-
ded. See also HE3
Symmetric hysteresis layed around the value HE2 for
start and stop of demand signal
Pause time before demand signal for heating device
After end of operation of heating device the next de-
mand signal will be soonest after this delay time
Minimum duration for the chiller demand signal
The opening of mixing valve of mixed circuit has to
exceed this value before the chiller is demanded.
See also DC3
Symmetric hysteresis layed around the value DC2 for
start and stop of demand signal
Pause time before demand signal for chiller
After end of operation of chiller the next demand sig-
nal will be soonest after this delay time
Min Max Base
value
0 20 3
0 100 50
0 25 5
0 10 1
0 15 3
Min Max Base
value
0 20 3
0 100 50
0 25 5
0 10 1
0 15 3
Unit
min
%
K
min
min
Unit
min
%
K
min
min
99