York International ZQ Series Installation Manual page 69

Table 58: Smart Equipment™ Economizer Board Details
Board Label Cover Label
EX VFD
COM
J4
24V~
ECON
COM
24V~
ACT-A
ACT-B
J3
COM
EX-FAN
COM
C COM
R HOT
R
24V~
IN3 OAH
C COM
R 24V~
IN4 SAH
C COM
R 24V~
IN5 IAQ
C COM
R
24V~
IN6
OAQ
C COM
R 24V~
IN7 FR AIR
C
COM
R 24V~
Description
ANALOG OUTPUTS Pin at center on upper edge of economizer board
2-10 VDC positive output for the modulating power
Exhaust fan Variable Frequency Drive/discharge damper
modulating power exhaust actuator
24 VAC common/0-10 VDC negative for the power exhaust
variable frequency drive/discharge damper modulating
power exhaust actuator
24 VAC hot supplied for the discharge damper modulating
power exhaust actuator and economizer actuator
2-10 VDC output for the Economizer actuator
24 VAC common/0-10 VDC negative for economizer
actuator
BINARY OUTPUTS Pin at right on upper edge of economizer board
24 VAC hot supplied for an incremental (floating control)
economizer actuator
24 VAC hot outputs to position an incremental (floating
control) economizer actuator
24 VAC return
24 VAC common for an incremental (floating control)
economizer actuator
24 VAC hot output to energize power exhaust fan
contactor coil/VFD enable relay coil
24 VAC common/0-10 VDC negative for economizer
actuator
24V~ IN Pin connections at right on upper edge of economizer board
24 VAC transformer Common referenced to cabinet
ground
24 VAC transformer HOT
ANALOG INPUTS Terminal on lower edge of economizer board
24 VAC hot supplied for the outdoor air humidity sensor
0-10 VDC positive input from the Outdoor Air Humidity
sensor
24 VAC common/0-10 VDC negative for the outdoor air
humidity sensor
24 VAC hot supplied for the supply air humidity sensor
0-10 VDC positive input from the Supply Air Humidity
sensor
24 VAC common/0-10 VDC negative for the supply air
humidity sensor
24 VAC hot supplied for the indoor air quality sensor
0-10 VDC positive input from the Indoor Air Quality sensor
24 VAC common/0-10 VDC negative for the indoor air
quality sensor
24 VAC hot supplied for the outdoor air quality sensor
0-10 VDC positive input from the Outdoor Air Quality
sensor
24 VAC common/0-10 VDC negative for the outdoor air
quality sensor
24 VAC hot supplied for the air monitoring station sensor
0-10 VDC positive input from the air monitoring station
sensor
24 VAC common/0-10 VDC negative for the air monitoring
station sensor
24 VAC hot supplied for the building pressure sensor
Johnson Controls Ducted Systems
ExFanVFD parameter reports output status (0-100%) when ExFType selection is
Variable Frequency Fan; EAD-O parameter reports output status (0-100%) when
ExFType selection is Modulating Damper. Used to ramp the power exhaust fan
VFD/position the discharge damper actuator.
Connects through circuit trace to 24V~ IN pin COM
Connects through circuit trace to 24V~ IN pin HOT
Econ parameter reports output status (0-100%). Used to position the
economizer actuator for minimum position, free cooling, demand ventilation,
cooling economizer loading and purge functions
Connects through circuit trace to 24V~ IN pin COM
Connects through circuit trace to 24V~ IN pin HOT
Unused in current control revision
Unused in current control revision
Connects through circuit trace to 24V~ IN pin COM
ExFan parameter reports output status (Off-On) when ExFType selection is Non-
Modulating, Modulating Damper or Variable Frequency Fan. Used to turn on/
enable the power exhaust fan motor.
Connects through circuit trace to 24V~ IN pin COM
24 VAC common connection to power the economizer board. Connects through
circuit traces to C/COM terminals and pins distributed on the economizer board.
24 VAC hot connection to power the economizer board. Connects through circuit
traces to R/24V~ terminals and pins distributed on the economizer board.
Connects through circuit trace to 24V~ IN pin HOT
OAH parameter reports input status (0-100%H). Used in outdoor air enthalpy
calculation for dual enthalpy economizer free cooling changeover.
Connects through circuit trace to 24V~ IN pin COM
Connects through circuit trace to 24V~ IN pin HOT
SAH parameter reports input status (0-100%H). Unused in current control
revision.
Connects through circuit trace to 24V~ IN pin COM
Connects through circuit trace to 24V~ IN pin HOT
IAQRange parameter sets the CO2 parts per million measured by the indoor
air quality sensor when it outputs 10 VDC; IAQ parameter reports input status
(0-5000ppm). Used for demand ventilation functions if the NetIAQ parameter
indicates ?Unrel.
Connects through circuit trace to 24V~ IN pin COM
Connects through circuit trace to 24V~ IN pin HOT
OAQRange parameter sets the CO2 parts per million measured by the outdoor
air quality sensor when it outputs 10 VDC; OAQ parameter reports input status
(0-5000ppm). Used for demand ventilation function when DVent-Mode selection
is Diff between IAQ and OAQ and the NetOAQ parameter indicates ?Unrel.
Connects through circuit trace to 24V~ IN pin COM
Connects through circuit trace to 24V~ IN pin HOT
MOA-Range parameter sets the cubic feet per minute/liters per second
measured by the air monitoring station sensor when it outputs 10 VDC; Fr Air
parameter reports input status (0-50000CFM/23595lps). Used for economizer
minimum position reset in speed-controlled indoor blower applications.
Connects through circuit trace to 24V~ IN pin COM
Connects through circuit trace to 24V~ IN pin HOT
INSTALLATION MANUAL ZQ SERIES 3 - 5 ton 60 Hertz R-410A
Function and Comments
69