Johnson Controls ZL Series Installation Manual page 59

Table 37: Smart Equipment™ ucb details (continued)
HPS1(left pin)
LPS1(right pin)
LPS1(left pin)
HPS2(right pin)
HPS2(left pin)
LPS2(right pin)
LPS2(left pin)
FAN OVR(right pin)
FAN OVR(left pin)
PWR
C
–
+
J8
Display
ENTER
CANCEL
JOY
J10
J15
FC+
FC–
COM
Description
24 VAC hot return from refrigerant
circuit 1 High Pressure Switch
24 VAC hot out for refrigerant circuit 1 Low Pressure Switch
24 VAC hot return from refrigerant
circuit 1 Low Pressure Switch
24 VAC hot out for refrigerant circuit 2 High Pressure Switch
24 VAC hot return from refrigerant
circuit 2 High Pressure Switch
24 VAC hot out for refrigerant circuit 2 Low Pressure Switch
24 VAC hot return from refrigerant
circuit 2 Low Pressure Switch
24 VAC hot out for indoor blower FAN
Overload relay contact/motor protector switch
24 VAC hot return from indoor blower FAN
Overload relay contact/motor protector switch
1
Terminal SA BUS 1 connections on at left on lower edge and center of UCB
Power for SA (Sensor-Actuator) BUS devices
Common for SA BUS power and communication circuits
Communication for SA BUS devices
Communication for SA BUS devices
6-pin phone jack connector
Item Integrated user interface at lower left corner of UCB
On-board, 2-line x 8-character back-lit display
Button for display menu acknowledgment and navigation
Button for display menu navigation and
zeroing of active compressor ASCD timer
4-way Joystick for display menu navigation
Item USB connector at right of UCB
Type A female Universal Serial Bus connector
Factory wired SA Bus connector
Optional communication sub-board at center of UCB
Terminal FC BUS connections on left edge of the communication board
1
FC (Field Connected) BUS BACnet MSTP communication
FC (Field Connected) BUS BACnet MSTP communication
Common for the FC (Field Connected)
BUS BACnet MSTP communication circuit
Johnson Controls Ducted Systems
Input is only considered if C1 output is needed; input must be present
to allow C1 output. Three HPS1 trips in a two hour period cause a
High Pressure Switch 1 Lockout and C1 output is then prevented until
alarm reset. Connects through circuit trace to the right LPS1 pin.
Connects through circuit trace to the left HSP1 pin
Input is only considered after 30 seconds of C1 output;
afterwards, input must be present to allow C1 output. Three
LPS1 trips in a one hour period cause a Low Pressure Switch
1 Lockout and C1 output is then prevented until alarm reset.
Not effective for one stage compressor UCBs.
Connects through circuit trace to the R terminal
Not effective for one stage compressor UCBs. Input is only
considered if C2 output is needed; input must be present to allow
C1 output. Three HPS2 trips in a two hour period cause a High
Pressure Switch 1 Lockout and C2 output is then prevented until
alarm reset. Connects through circuit trace to the right LPS2 pin.
Not effective for one stage compressor UCBs.
Connects through circuit trace to the left HSP2 pin
Not effective for one stage compressor UCBs. Input is only considered
after 30 seconds of C2 output; afterwards, input must be present to allow
C2 output. Three LPS2 trips in a one hour period cause a Low Pressure
Switch 2 Lockout and C2 output is then prevented until alarm reset.
Connects through circuit trace to the R terminal
Input is only considered if FAN output is needed; input must be present
to allow FAN output and unit operation. One FAN OVR trip lasting longer
than 5 minutes or three FAN OVR trips in a two hour period cause a Fan
Overload Lockout and unit operation is then prevented until alarm reset.
Also incorporated in the J8 6-pin phone jack connector at the left-
center of the board. Positive of the 15 VDC (reading to C) circuit
for powering an optional netstat and/or Multi Touch gateway
Also incorporated in the J8 6-pin phone jack connector at
the left-center of the board. Negative of the SA BUS circuits
Also incorporated in the J8 6-pin phone jack connector at the left-
center of the board. Positive of the VDC (typically, a fluctuating
1.5 V to 3.5 V reading to C; at least 0.25 V lower than +) SA BUS
communication circuit to optional economizer board, 4-stage board, fault
detection and diagnostics board, netstat and/or Multi Touch gateway
Also incorporated in the J8 6-pin phone jack connector at the left-
center of the board. Positive of the VDC (typically, a fluctuating
1.5 V to 3.5 V reading to C; at least 0.25 V higher than –) SA BUS
communication circuit to optional economizer board, 4-stage board, fault
detection and diagnostics board, netstat and/or Multi Touch gateway
Incorporates the SA BUS terminals for convenience/
alternate connection of SA BUS devices, primarily used for
temporary service connection of the Multi Touch gateway
On-board display, buttons and joystick allow access to
UCB, economizer, 4-stage and FDD board parameters
Used for backup, restoration, and copying of board parameters
as well as board software updating through a flash drive
Positive of the VDC (typically, a fluctuating 1.5 V to 3.5 V reading to COM;
at least 0.25 V higher than –) FC bus BACnet MSTP communication circuit
Positive of the VDC (typically, a fluctuating 1.5 V to 3.5 V reading to COM;
at least 0.25 V lower than +) FC bus BACnet MSTP communication circuit
Negative of the VDC FC bus BACnet MSTP communication circuit
Installation Manual ZL Series 7.5- 12.5 Ton 60 Hertz R-410A
Function and comments
59