Default Settings; Min And V Max; Setting Constant Volume Flow Control; Setting Variable Volume Flow Control - Trox Control component Easy Installation And Commissioning Instructions

Commissioning and operation
Setting the Easy controller > Setting variable volume flow control
6.1.4 Default settings V
Default settings of the volume flow controllers with Easy
controller:
V : 40%

min
V : 80%

max
During commissioning, the settings can be adjusted
according to the requirements.

6.1.5 Setting constant volume flow control

The setpoint value for a constant volume flow rate is set
on the V potentiometer.
min
The position of the V potentiometer should be set to
max
0%.
For the constant volume flow control, no control signal is
required at terminal w.

6.1.6 Setting variable volume flow control

24
and V
min max
Control component Easy for VAV terminal units
In the case of a variable volume flow control, the vari-
able volume flow rate operating range is set via the
potentiometers V and V
min
control signal at terminal w.
The following points should be noted for the control
input signal:
Usable control range of the VAV terminal unit

Ä Chapter 6.1.1 'Control ranges of VAV terminal
units' on page 22
V = nominal volume flow rate at control signal (w)

min
with 0 V DC (not less than 10 or 20%)
V = set volume flow rate at control signal (w) with

max
10 V DC
In order to achieve a higher resolution of the assign-
ment of 0–10 V voltage signals to the volume flow rate
setpoint values, the operating range can be restricted.
If the value for V is set higher than V
min
V is interpreted as a fixed setpoint value. The setpoint
min
signal (w) is ignored here.
6.1.6.1 Setting the entire control range for the
control input signal of the central building
management system
If the volume flow rate is to be specified by the central
GLT [BMS] over the entire control range, set the V
potentiometer to 0% and the V
100%.
The following points should be noted for the control
input signal:
Usable control range of the VAV terminal unit

Ä Chapter 6.1.1 'Control ranges of VAV terminal
units' on page 22
The usable control range is available from a 1 V DC
or 2 V DC control signal, depending on the VAV ter-
minal unit type.
If the control signal drops below 0.5 V DC, the

damper blade moves to the shut-off position.
Compliance with a control signal ≤ 0.5 V DC is not
always given due to interference voltages on the
supply lines. Therefore, the positive circuit should
always be preferred for a safe shut-off
control on/off' on page 20.
, which is controlled via the
max
, the setting of
max
min
potentiometer to
max
Ä 'Override