TRA-F12x-A
C
ONFIGURATION
Doc: 70-00-0792B V1.3, 20220830
© Vector Controls GmbH, Switzerland
Page 26-34
Subject to change without notice
www.vectorcontrols.com
V
ECTOR
5.8.7
Fan control in automatic mode (on/off control)
Note:
•
Fan is off only if the valve (or electric heater) is turned off.
•
This chart shows the fan control for 2-pipe and 4-pipe heating or cooling applications (P200 = 0 to 5).
For 4-pipe heating and cooling application (P200 = 6), the dead zone between heating and cooling switch point is
not depicted.
•
This chart assumes P213 (Minimum fan speed in auto mode) is set to 0 = Fan off (default).
Fan speed 1 is aligned with on/off valve (or electric heater). If the valve (or electric heater) switches ON for
heating/cooling then the fan speed 1 is switched ON. If the valve (or electric heater) switches OFF then the fan speed is
switched OFF (in case P213 minimum fan speed in auto mode is 0)
X
H
/ X
C
[°C]
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
X
fanH
/ X
fanC
[°C]
2
3
4
5
6
7
8
9
10
For the remaining
X
H
/ X
C
: X
fanH =
X
H
*2+1 and
X
fanC =
X
C
* 2+1
5.8.8
Fan control in automatic mode (3-position control)
ON
OFF
Legend
W
Set point
X
H
Switching span heating
X
C
Switching span cooling
X
fanH
Switching span for fan heating
X
fanC
Switching span for fan cooling
DO4/DO5 (Valve or heater)
X
fanH
X
fanC
W
Fan
speed
3
2
1
Heating mode
Cooling mode
X
H
X
C
X
pH
Legend
X
pH
Proportional band heating
X
pC
Proportional band cooling
W
Set point
X
pC
Heating mode
Cooling mode
T [°C]
W
Fan
speed
3
2
1
0
