Doc: 70-00-0958A V1.0, 20221102 © Vector Controls GmbH, Switzerland Page 26-34
Subject to change without notice www.vectorcontrols.com
5.8.8 On/Off control for 4-pipe application heating and cooling mode
Valid values for given chart
6 (= 4-pipe heating and cooling)
Note that following condition must be met:
5.8.9 Modulating control for 4-pipe application heating and cooling mode
Valid values for given chart
6 (= 4-pipe heating and cooling)
Note: X
DZ
can be chosen smaller than for on/off valve, as the modulating control is more accurate.
W Set point
X
H
Switching span heating
X
C
Switching span cooling
X
DZ
Dead zone half between set point
and valve switch off
W Set point
X
H
Proportional band heating
X
C
Proportional band cooling
X
DZ
Dead zone half span