York Sun Select YV28 - Smart Equipment Economizer Board

Smart Equipment
™
economizer board
Figure 64: SE-ECO1001-0 economizer controller
The following tables describe the details of the economizer board. See the previous figure for connection
locations.
Table 51: Smart Equipment
™
economizer board - analog inputs
Location Board label
Cover
label
Description Function and comments
C COM
24 VAC common/0-10 VDC negative for economizer
actuator position feedback
Connects through circuit trace to 24V~ IN pin COM
IN2 ECOFB
0-10 VDC positive input from economizer actuator position
feedback
The EconDampPos parameter reports input status (0-100%). Used to meet
California Title 24 requirements for economizer actuator position feedback.
R 24V~
24 VAC hot supplied for economizer actuator position
feedback
Connects through circuit trace to 24V~ IN pin HOT
C COM
A
IN1 MAT
Mixed air temperature sensor input from 10KΩ @ 77°F,
Type III negative temperature coefficient thermistor
The MAT parameter reports input status (°F/°C), 3.65 VDC reading MAT (+) to
COM (−) with open circuit. Read-only use in current control revision.
Installation Manual: YORK
®
Sun
™
Select YV28 to YV50
74
Johnson Controls Ducted Systems