YCCS System Manager and Zone Coordinator Installation Instructions
9
428546-YIM-C-1110
On a YCCS System bus or Zone bus, only one EOL
termination is required due to the fewer number of
devices on one bus and the shorter wiring length.
Specifically, the System bus must always have a
System Manager as the EOL device, and the Zone bus
must always have a Zone Coordinator as the EOL
device. Figure 9 shows a YCCS EOL wiring example.
Operation
For information on heating and cooling modes, zone
voting, and other Zone Coordinator and System
Manager functions, refer to the
York
Commercial
Comfort System (YCCS) Operation Overview Technical
Guide (643517)
.
For information on creating setpoints and configuring
operating modes, refer to the
York Commercial
Comfort System (YCCS) System Manager and Zone
Coordinator Userís Guide (428516)
.
Figure 9: System Manager and Zone Coordinator EOL Wiring
Input
Output
Module
24V
COM
COM
-
+
BI-1
COM
BI-2
COM
AI-3
COM
AI-4
Monitored Contact
To Temperature,
RH%, CO
2
Sensor,
Building Pressure,
Light Sensor,
Refrigerant Sensor
To 24VAC
BO-3
BO-2
BO-1
BO-4
COM
Monitored Contact
To Scheduled Item 1
To Scheduled Item 2
To Scheduled Item 3
To Scheduled Item 4
Non-
CCS
HVAC
System
Universal
CV Unit
Controller
24V
COM
Zone Sensor
COM
-
+
AI-1
COM
AI-2
1
2
3
4
BO-1
BO-2
BO-3
BO-4
BO-5
C
R
G
Y1
Y2
W1
W2
COM
AI-6
COM
AI-7
COM
AI-8
COM
AI-4
COM
AI-5
COM
BI-2
SAT Sensor
RAT Sensor
OAT Sensor
To Zone RH% Sensor
To Zone CO
2
Sensor
APS
Zone Sensor
COBP Zone Coordinator
System
Bus
CO
M
SB
-
SB
+
EOL
O
N
?
Zone
Bus
CO
M
ZB-
ZB+
EOL
O
N
?
COM
24V
LAN
To 24VAC
System Manager
System
Bus
COM
SB-
SB+
EOL
O
N
Zone
Bus
COM
ZB
-
ZB
+
EOL
O
N
COM
24V
Modem
LAN
To 24VAC
To Phone Line
To Ethernet Hub
VAV Zone Coordinator
System
Bus
COM
SB-
SB+
EOL
O
N
Zone
Bus
COM
ZB
-
ZB
+
EOL
O
N
COM
24V
LAN
To 24VAC
tape
off
CV Unit Controller
CO
M
-
+
Simplicity Board
Binary
&
ModBus
This end of the Drain Wire
connected to cabinet ground
Other System Bus Devices
AI-1
COM
AI-2
1
2
3
4
Other System Bus Devices
Other System Bus Devices
To COBP Zone
Bus Devices
To VAV Zone
Bus Devices
Zone Coordinator must be end of line for zone bus
System Manager must be end of line for system bus
FI
G
:SM
-Z
C
_EOL
Zone Coordinator must be end of line for zone bus
