3
2.4 System Connections
*Transformer must be sized to handle the VA requirements of all dampers and zone panels installed
Communicating
Communicating Indoor Unit
Communicating Outdoor Unit
Control
R
B
D
R
B
D
Communicating
Indoor Unit
Communicating
Outdoor Unit
Non-Communicating Zone Sensor(s)
(ZZSENSAL0400A)
Communicating Zone Sensor(s)
*ZONE940AC52ZA
Static Pressure
Transducer
(OPTIONAL)
Zone Panel
(Zones 1-4)
Damper(s)
Zone Panel
(Zones 5-8)
Field-Supplied 24V
Transformer
Return
(OPTIONAL)
Mixed
(OPTIONAL)
Temperature
Sensor(s)
Discharge
(REQUIRED)
CNT06430
24VAC 50/60Hz
1.5VA
18in-lb(2Nm)
60s
Made in Switzerland
Trane US, Inc.
MANUAL
GEAR
RELEASE
0 1
!
III
ZONES
1 - 4
5 - 8
Zone Dampers
Sensors
Reserved
Reserved
Reserved
Static Press
Gnd/Grn
Signal/Blk
+5V/Red
TemperatureNon Comm Zone Sensor
Discharge Air
Discharge Air
Return Air
Return Air
Mixed Air
Mixed Air
Zone 1 or 5
Zone 1 or 5
Zone 2 or 6
Zone 2 or 6
Zone 3 or 7
Zone 3 or 7
Zone 4 or 8
Zone 4 or 8
Zone
1 or 5
ZONES
1 - 4
5 - 8
Indoor/
Relay Panel
Comm
Outdoor
Comm Zone Sensor
2nd Zone Panel
24V
Trans.
Common
PO/Open
PC/Closed
Zone
2 or 6
Common
PO/Open
PC/Closed
Zone
3 or 7
Common
PO/Open
PC/Closed
Zone
4 or 8
Common
PO/Open
PC/Closed
Comm
R
BD B
B
R
BD D
TRANS.
ZONES
1 - 4
5 - 8
Zone Panel
ByPass
Zone Dampers
Sensors
Common
PO/Open
PC/Close
Static Press
Gnd/Grn
Signal/Blk
+5V/Red
Temperature
Remote Indoor
Discharge Air
Discharge Air
Return Air
Return Air
Mixed Air
Mixed Air
Zone 1 or 5
Zone 1 or 5
Zone 2 or 6
Zone 2 or 6
Zone 3 or 7
Zone 3 or 7
Zone 4 or 8
Zone 4 or 8
Zone
1 or 5
ZONES
1 - 4
5 - 8
Indoor/
Relay Panel
Outdoor
Zone Panel
(Only Use For
Zones 5-8)
24V
Trans.
Common
PO/Open
PC/Close
Zone
2 or 6
Common
PO/Open
PC/Close
Zone
3 or 7
Common
PO/Open
PC/Close
Zone
4 or 8
Common
PO/Open
PC/Close
Comm
R
BD B
B
R
BD D
R
B
B
D
D
RB D
Clamp-style Connectors