VAV-Universal Retrofit-Set
Installation
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M4-VAV-Universal Retrofit Set • en • v1.1 • 04.2011 • Subject to changes
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Installation of the new pick-up device
Measured value recording
The installation position and the inflow of the pick-up device are of decisive importance for
measuring accuracy. If the measurement recording is positioned in an area of turbulence or if
no sufficiently wide-ranging flow takes place, then measurement inaccuracies could occur under
certain circumstances.
Placement
A
B
Installation position
D = 100 … 250
D = 280 … 400
D
B [mm]
280
220
315
247
355
279
400
314
1
1
4
3
2
4
D = 100 … 250
D = 280 … 400
Dismantling the existing VAV controller
Electrical connection
1. In the control cabinet, undo supply/signal
cable to the outgoing terminals
Caution
: Observe and note connection
sequence
2. Undo supply/signal cable to the VAV controller
Caution
: Observe and note connection
sequence
Mechanical components
1. Dismantling the existing pick-up device
2. Dismantling the controller
3. Dismantling the actuator
Note
Two pick-up devices are required for VAV boxes
from 280 to 400 mm.
For this purpose use the ZPD-RE2-SET.
A
Measurement site
B
Maximum hose length 3 m per
measurement line
1
Air duct
2
Bore hole for mounting pick-up device
3
Clearance between the pick-up devices
4
Air direction
