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
PC
PO
COM
!
III
Z
ONES
1 - 4
5 - 8
Z
one Dam
pers
S
ensors
Reserved
Reserved
Reserved
S
ta
tic
P
res
s
Gnd/Grn
Signal/Blk
+5V/Red
Tem
pe
ra
tu
re
Non 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
Z
one
1 or 5
Z
ONES
1 - 4
5 - 8
Indoor/
Relay Panel
Comm
Outdoor
Comm Zone Sensor
2nd Zone Panel
24V
Trans.
Common
PO/Open
PC/Closed
Z
one
2 or 6
Common
PO/Open
PC/Closed
Z
one
3 or 7
Common
PO/Open
PC/Closed
Z
one
4 or 8
Common
PO/Open
PC/Closed
Comm
R
B
D
B
B
R B
D
D
TRANS.
Z
ONES
1 - 4
5 - 8
Zone Panel
B
yP
ass
Z
one Dam
pers
S
ensors
Common
PO/Open
PC/Close
S
ta
tic
P
res
s
Gnd/Grn
Signal/Blk
+5V/Red
Tem
pe
ra
tu
re
Remo
te
Ind
oor
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
Z
one
1 or 5
Z
ONES
1 - 4
5 - 8
Indoor/
Relay Panel
Outdoor
Zone Panel
(Only Use For
Zones 5-8)
24V
Trans.
Common
PO/Open
PC/Close
Z
one
2 or 6
Common
PO/Open
PC/Close
Z
one
3 or 7
Common
PO/Open
PC/Close
Z
one
4 or 8
Common
PO/Open
PC/Close
Comm
R
B
D
B
B
R B
D
D
R
B
B
D
D
R
B D
Clamp-style Connectors
