York ZV-06 Installation Manual page 72

5567611-BIM-B-1218
Smart Equipment™ UCB - temperature sensor connections (Continued)
Location Label
#2 refrigerant circuit Condenser Coil temperature
CC2+
sensor input from 10KΩ @ 77°F, Type III negative
temperature coefficient thermistor
D
#2 refrigerant circuit Evaporator Coil temperature
EC2+
sensor input from 10KΩ @ 77°F, Type III negative
temperature coefficient thermistor
Smart Equipment™ UCB - pinned connections
Location Label
Return Air Humidity input from 0-10 VDC @ 0-
RAH+
Supply Duct Pressure input from 0-5 VDC @ 0-5"
DCT PRS+
DFS
(upper pin) 24 VAC hot return from Dirty Filter Switch
DFS
(lower pin) 24 VAC hot out for Dirty Filter Switch
APS
(upper pin) 24 VAC hot return from Air Proving Switch
E
APS
(lower pin) 24 VAC hot out for Air Proving Switch
C
Common for the VFD output
2-10 VDC (0-100%) output for the indoor blower
VFD
Variable Frequency Drive
24 VAC hot input from the normally open VFD
VFDFLT
alarm contact
Smart Equipment™ UCB - USB connector
Location Label
F J10
Type A female Universal Serial Bus connector
J15
Factory wired SA Bus connector
Smart Equipment™ UCB - 24 V terminal
Location Label
G 24V FOR OUTPUTS
72
Description
Description
100% RH sensor
w.c. sensor
Description
Description
24 VAC hot for H1, H2, CN-FAN, AUX HGR,
FAN C1 and C2 output relay contact switching
Function and comments
Input required for 2-compressor heat pump units, not required for 2-
compressor A/C units, not active for 1-compressor units; 3.625 VDC
reading CC2+ to CC2– with open circuit. Used in heat pump demand
defrost calculation.
Input required for operation of 2-compressor units, not active for 1-
compressor units; 3.625 VDC reading EC2+ to EC2– with open circuit.
Used in suction line temperature safety.
Function and comments
Input required for reheat units, optional in all other units, may be a
communicated value. Used in return air enthalpy calculation,
temperature/humidity setpoint reset, reheat operation.
Input required for variable air volume units. Used in VAV indoor blower
operation.
Optional input; switch closure for greater than 15 seconds during
indoor blower operation initiates a notification alarm
Connects through circuit trace to the R terminal
When this optional input is enabled: the air proving switch must close
within 30 seconds of initiation of indoor blower operation and not open
for greater than 10 seconds during indoor blower operation to allow
heat/cool operation and prevent an "APS open" alarm; the air proving
switch must open within 30 seconds of termination of indoor blower
operation to prevent an "APS stuck closed" notification alarm
Connects through circuit trace to the R terminal
Negative of the VDC circuit for the VFD output
Output is active with indoor blower operation. For CV units: this output
provides stepped IntelliSpeed control of the indoor blower VFD based
on fan-only, cooling stage and heating stage outputs. For VAV units:
this output provides control of the indoor blower VFD based on supply
duct static pressure input and setpoint.
The VFD alarm contact switches from R within the unit wiring harness.
24 VAC input results in unit shutdown and a "VFD fault" alarm
Function and comments
Used for backup, restoration, & copying of board parameters as well as
board software updating through a flash drive
Output relay circuitry is isolated from other UCB components
and the 24 VAC hot source may be from a second
transformer in the unit
Function and comments
Johnson Controls Ducted Systems