14
18-HD66D1-4
Mount the Zone Panel 24V Power Supply
12
A separate, field-supplied 24 volt transformer is required
to power the Zone Panel, communicating sensors
and dampers. VA sizing of the transformer will be
dependant on the total VA of all installed zone panels,
communicating sensors and zone dampers. Connect this
dedicated 24 volt source to the R and B terminals.
NOTE:
To prevent possible communication errors,
connect the B/common of the field-supplied Zone Panel
transformer to the indoor unit B/common or equipment
ground.
EXAMPLE:
*Add the VA of each communicating sensor
Power Supply Connections
Terminal
Name
Description
Color Used:
R
24V Hot
B
Common
Transformer Sizing Example (8 Zone System, 1 Damper per Zone)
Component
Qty
VA (ea)
Total VA
Zone Panel
2
2
4
Zone Dampers*
8
1.5
12
Communicating
Sensor
4
2
8
Minimum Transformer VA Required
24
Zone Dampers
Sensor
s
Reserved
Reserved
Reserved
Static Press
Gnd/Grn
Signal/Blk
+5V/Red
Temperatur
e
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
Zone 1 or
5
ZO
NE
S
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
B
D
B
B R B
D
D
Connect the Dampers
13
The dampers will have the same terminal
designation as the Zone Panel.
For each damper:
•
Connect Common from the damper to
Common on the Zone Panel.
•
Connect PO/Open from the damper to
PO/Open on the Zone Panel.
•
Connect PC/Close from the damper to
PC/Close on the Zone panel.
Repeat this for each damper installed (see
the damper installer’s guide).
Zone Dampers
Terminal Name
Description
Color Used:
Reserved
Common
Reserved
Power Open
Reserved
Power Close
Zone 1
or 5*
Common
Common
PO/Open
Power Open
PC/Close
Power Close
Zone 2
or 6*
Common
Common
PO/Open
Power Open
PC/Close
Power Close
Zone 3
or 7*
Common
Common
PO/Open
Power Open
PC/Close
Power Close
Zone 4
of 8*
Common
Common
PO/Open
Power Open
PC/Close
Power Close
* Zones 5–8 are only when a second zone panel is used.
NOTES:
•
60 second drive dampers are the default. 15-60 second dampers
can be used, timing must be set at the 950/1050 Control.
•
Up to 4 dampers may be used per zone (6 VA Max.).
•
Mixing dampers from multiple manufacturers in the same zone is
not permitted.
Zone Dampers
Sensor
s
Reserved
Reserved
Reserved
Static Press
Gnd/Grn
Signal/Blk
+5V/Red
Temperatur
e
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
Zone 1 or
5
ZO
NE
S
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
B
D
B
B R B
D
D
