Variable air volume controllers
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Versions, compatibilities
This document describes the function and handling of the new ZTH-GEN V4.xx.
The ZTH-GEN V4.xx contains the functionality of all previous versions of ZTH-GEN and
ZTH-VAV, in addition to those of the new VAV-Compact D3.
Previous ZTH versions can be upgraded to a ZTH-GEN V4.xx by means of a simple firmware
download.
Contact your Belimo representative or consult
for information.
ZEV
The adjustment tool ZEV (1992 to 2007) is replaced by the ZTH-GEN V4.xx
ZTH-VAV
Will be replaced by the new ZTH-GEN V4.xx
ZTH-GEN V2.xx / V3.xx
Will be replaced by the new ZTH-GEN V4.xx
Current information regarding
• Upgrade ZTH-VAV → ZTH-GEN
• Firmware upgrade to V4.xx
• Version overview, documentation
see
Recommendation
Wire the PP connection (U5) to the
floor distributor/control cabinet.
This means there is no need for direct access
to the device.
Connection in the MP bus system
Correct
Wrong
OK
ZTH-GEN BELIMO
OK
ZTH-GEN BELIMO
MP-Master
MP6
MP1
MP4
MP2
MP3
MP5
MP8
MP7
MP-Master
MP6
MP1
MP4
MP2
MP3
MP5
MP8
MP7
OK
ZTH-GEN BELIMO
OK
ZTH-GEN BELIMO
MP-Master
MP6
MP1
MP4
MP2
MP3
MP5
MP8
MP7
MP-Master
MP6
MP1
MP4
MP2
MP3
MP5
MP8
MP7
Direct connection to the MP bus or MP master is not possible with the ZTH-GEN.
Solution: Use the service socket on the actuator/VAV controller or temporarily disconnect
the MP connection of the MP device from the MP bus and connect the ZTH-GEN to the MP
connection.
white
blue
green
Connection
Connection and supply
The ZTH-GEN is supplied via the actuator/VAV controller. The connection is set up
• directly at the Service socket of the actuator/VAV controller or
• via the PP/MP connection (U5) e.g. connection socket, in the control cabinet, room
controller CR24
Local connection to service socket
Connection to
Cable type
Connection
VAV: ..-D2-MP / LON ZK1-GEN (enclosed)
Direction connection to Service
socket
- plug in the plug
- set up contact with clockwise
rotation
VAV: ..-D3-MP / LON
..-MF / MP / LON
EPIV: P6..W..-C24E
VAV: VRP-M
1)
ZK4-GEN (Accessories)
24 V
~
/+
ZK4-GEN
ZTH-GEN
BKN..MP
VRP-M
F/S: BKN230-24MP (BF-
Top)
VAV: VRD3
ZK6-GEN (Accessories)
VAV: ..MV-D2M
1)
ZK1-VAV (Accessories)
VAV via CR24-..
1)
ZTH-GEN connection in MP bus system: The MP connection should be separated from the
MP bus while the ZTH-GEN is operating.
Direction connection to terminals
Connection to
Cable type
Connection
VAV: ..-D2-MP / LON ZK2-GEN (Accessories)
1
2
GND
MP/PP
~
/+
ZTH-GEN
VAV: ..-D3-MP / LON
VAV: ..MV-D2M
VAV via CR24-..
..-MF / MP / LON
EPIV: P6..W..-C24E
VAV: VRP-M
VAV: VRD3
F/S: BKN230-24MP (BF-
Top)
