Function
|
VAV Compact D3
|
VAV Compact D2
|
Application
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Pressure-independent control of CAV/VAV units in the comfort zone
|
Control function
|
VAV and CAV units
|
Control characteristics
|
PI control
|
Sensor
|
Integrated dynamic differential pressure sensor
|
-Sensor type
|
D3 sensor, calorimeter
|
D2 sensor, thermo-anemometer
|
-Measurement range
|
~0.5…600Pa
|
2…300Pa
|
-Warm-up time of sensor element
|
~10s
|
> 15min
|
-Pressure display
|
ZTH-GEN / PC-Tool
|
None
|
-Adjustment to V'nom parameter
|
Δp@V'nom [Pa] / V'nom [m3/h / l/s / cfm]
|
Calibration value [1500…7000] V'nom [m3/h / l/s / cfm]
|
VAV / CAV control signal
-VAV: Mode 0…10V
|
V'min…V'max
|
Mode 2…10V
|
0V = closed / V'min…V'max
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0V = closed / V'min…V'max
|
Shut-off level (2…10V)
|
0.1 (default) / 0.5V selectable
|
0.1V fixed
|
-CAV: Input w (3)
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CLOSED / V'min / V'max / OPEN V'mid fixed 50%
|
CLOSED / V'min / V'max / OPEN V'mid adjustable
|
-U5 feedback signal
|
0…100% of
V flow / damper position / Δp
|
0…100% of
V flow / damper position
|
Operating volumetric flow
-V'min range
|
0…100% V'max
|
-V'max range
|
20…100% V'nom
|
30…100% V'nom
|
Adjustment tools
-ZTH-VAV
|
"same" as Compact D2 (no Δp display)
|
V1.x full support
|
-ZTH-GEN (starting V4.xx)
|
full support
|
full support
|
-PC-Tools
|
full support starting V3.6
|
full support starting V3.1
|
Wiring connection
|
"same" as Compact D2
|
full support
|
Accuracy
|
Δp -20…+20Pa à +/-1Pa
Δp +20…500Pa à +/-5%
|
~+/-10% (approx.)
|
Dimensions
|
"same" as Compact D2
|
full support
|