York ZV-06 Installation Manual page 74

5567611-BIM-B-1218
Smart Equipment™ UCB - refrigerant circuit safety switch and indoor blower overload connections (Continued)
Location Label
LPS2
24 VAC hot out for refrigerant circuit 2 Low
(right pin)
Pressure Switch
LPS2
24 VAC hot return from refrigerant circuit 2 Low
(left pin)
Pressure Switch
J
FAN OVR
24 VAC hot out for indoor blower FAN Overload
(right pin)
relay contact/motor protector switch
FAN OVR
24 VAC hot return from indoor blower FAN
(left pin)
Overload relay contact/motor protector switch
Smart Equipment™ UCB - SA BUS
Location Label
PWR
Power for SA ("Sensor-Actuator") BUS devices
Common for SA BUS power and communication
C
circuits
K
–
Communication for SA BUS devices
+
Communication for SA BUS devices
L J8
6-pin phone jack connector
1. When wiring unit and other devices using the SA Bus and FC Bus, see Table 32.
Smart Equipment™ UCB - user interface
Location Label
Display
On-board, 2-line x 8-character back-lit display
ENTER
Button for display menu acknowledgment and navigation
M
Button for display menu navigation and zeroing of active
CANCEL
compressor ASCD timer
JOY
4-way Joystick for display menu navigation
74
Description
1
connections
Description
Description
Function and comments
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.
Function and comments
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 to 3.5 volts
reading to C; at least 0.25 volts lower than +) SA BUS communication
circuit to optional economizer board, 4-stage board, fault detection &
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 to 3.5 volts
reading to C; at least 0.25 volts higher than –) SA BUS communication
circuit to optional economizer board, 4-stage board, fault detection &
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
Function and comments
On-board display, buttons and joystick allow access to UCB,
economizer, 4-stage and FDD board parameters
Johnson Controls Ducted Systems