York ZKT06 Installation Manual page 36

5121835-TIM-J-1118
Smart Equipment™ economizer board - analog inputs (continued)
Board Cover
Location
label label
C COM
R 24V~
IN5 IAQ
C COM
R 24V~
IN6 OAQ
H
C COM
R 24V~
IN7 FR AIR
C COM
R 24V~
BLDG
IN8
PRES
C COM
Smart Equipment™ economizer board - LED details
Board Cover
Location
label label
POWER POWER Green UCB power indicator
FAULT FAULT
B
SA BUS SA BUS
36
Description
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
0-5 VDC positive input from the Building
Pressure sensor
24 VAC common/0-5 VDC negative for the
building pressure sensor
Description
Red networking error and firmware error
indicator
Green UCB SA bus communication
transmission indicator
Function and comments
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
BldgPres parameter reports input status (-.250-.250"/w/-.062-
.062kPa). Used for modulating power exhaust functions when
ExFType selection is Modulating Damper or Variable Frequency
Fan.
Connects through circuit trace to 24V~ IN pin COM
Function and comments
Lit indicates 24 VAC is present at 24V~ IN COM and HOT pins
1/10th second on/off flashing indicates a networking error
(polarity, addressing, etc.) or a firmware error (likely correctable
with re-loading from USB flash drive)
Lit/flickering indicates UCB-to-economizer board SA bus
communication is currently active, off indicates the economizer
board is awaiting SA bus communication
Johnson Controls Ducted Systems