Section 8. Control Board Test Points - Trane Zone Panel Installation Manual

Section 8. Control Board Test Points

SEE
TABLE 1
Terminals
Common & PO/Open
Common & PO/Open
Common & PC/Close
Common & PC/Close
Terminals
D & B
D & B
D & B
* Status LED (non-functional) may be present on early production models.
26
SEE
TABLE 2
1 - 4
1 - 4
5 - 8
5 - 8
D B
Reserved
Indoor/
Relay Panel
Reserved
Reserved
Common
PO/Open
PC/Closed
Common
PO/Open
PC/Closed
Common
PO/Open
PC/Closed
Common
PO/Open
PC/Closed
SEE TABLE 5
TABLE 2
System Connections
Communication
Volts (DC)
Status
12 Good Communication
16 No Communication
0 Grounded or no power
SEE
TABLE 3
D B D R B R B
Comm 24V
Comm Zone Sensor/
Outdoor
Trans.
2nd Zone Panel
Discharge Air
Discharge Air
Comm
Zone 4 or 8
* See Note
TABLE 1
Zone Dampers
Volts (AC)
24
0
24
0
Power from Transformer
Terminals
R & B
R & B
R & B
SEE
TABLE 4
Gnd/Grn
Signal/Blk
+5V/Red
SEE
Return Air
TABLE 6
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
Status
Damper drive open
Damper not being driven
Damper drive closed
Damper not being driven
TABLE 3
Volts (AC) Status
18 – 30 Good
< 18 Low voltage
0 No voltage
18-HD66D1-4