York DM036 Installation Manual page 57

Table 30: Simplicity SE UCB Details (Continued)
HPS2
(left pin)
LPS2
(right pin)
LPS2
(left pin)
FAN OVR
(right pin)
FAN OVR
(left pin)
PWR
C
–
+
J8
Display
ENTER
CANCEL
JOY
Johnson Controls Unitary Products
Description
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
Terminal SA BUS 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
Function & Comments
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 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
On-board display, buttons and joystick allow access to UCB,
economizer, 4-stage and FDD board parameters
5011492-XIM-B-0815
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