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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VRD3-RE2 setting with VAV adjustment tool ZTH-VAV
(continued)
Connection
Connection to
Cable type and order designation
VRD3-RE2, RJ «Service» socket
ZK-GEN
Accessories
PP connection (terminal 4), e.g. control
cabinet terminals
ZK2-GEN
Accessories
white
blue
turquoise
GND
PP
1
2
4
3
~ / +
ZTH-VAV
▲ ▼ – + OK
1
4
2
VRD2
VRD3
Power
Ser
vice
Actuator
min
%
nom
max
%
nom
Too
l
Tool
ZK6-GEN
ZK2-GEN
white
blue
turquoise
For detailed documentation concerning the handling and function of the ZTH-VAV, see ZTH-VAV instruction
manual at www.belimo.eu
Carry out adaption
An angle of rotation adaption of the damper actuator is recommended at the time of initial
commissioning. An angle of rotation adaption must however be carried out after the adjustment
of the angle of rotation limitations.
Procedure:
– Switch on the 24 V supply on the VRD3-RE2
– Press the «Adaption» pressure switch on the damper actuator (actuator travels
CLOSED … OPEN … setpoint position)
Performance check
A performance check is recommended after the installation of the VAV controller and the
completion of the adaption.
– Set the VAV controller with the ZTH-VAV to maximum and then afterwards to minimum air
volume («
max
»/«
min
»).
→ Check whether the required amounts of air have been attained.
Note
Additional optimisation options can be achieved
together with the single room controllers CR24.
Information concerning these options can be
found on the Belimo web site www.belimo.com
