©2016 Johnson Controls | The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local
Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.
© 2016 AirFixture, LLC
2
FlexSys
Control Box
CB2
Model:
Installation / Operation Manual
V160811
HEATING
DEMAND
AIR VALVES
(DAMPERS)
PROPORTIONAL
WATER VALVE
(10-0V / NORMALLY OPEN /
REVERSE ACTING)
2-POSITION
WATER VALVE
(ON-OFF / NORMALLY OPEN)
2-POSITION
WATER VALVE
(ON-OFF / NORMALLY CLOSED)
0% – 17%
CLOSED
1
CLOSED (10V)
CLOSED (24VAC)
CLOSED (0VAC)
ON
OFF
OFF
OFF
10% – 28%
CLOSED
1
OPEN 20% (8V)
OPEN (0VAC)
OPEN (24VAC)
ON
1
OFF
OFF
21% – 41%
CLOSED
1
OPEN 40% (6V)
OPEN (0VAC)
OPEN (24VAC)
ON
2
OFF
OFF
34% – 54%
CLOSED
1
OPEN 60% (4V)
OPEN (0VAC)
OPEN (24VAC)
ON
3
OFF
OFF
47% – 67%
CLOSED
1
OPEN 80% (2V)
OPEN (0VAC)
OPEN (24VAC)
ON
4
OFF
OFF
60% – 80%
CLOSED
1
OPEN 100% (0V)
OPEN (0VAC)
OPEN (24VAC)
ON
ON
OFF
OFF
73% – 100%
OPEN
2
OPEN 100% (0V)
OPEN (0VAC)
OPEN (24VAC)
ON
ON
OFF
ON
COOLING
DEMAND
0%
CLOSED
1
CLOSED (0V)
CLOSED (24VAC)
CLOSED (0VAC)
ON
OFF
OFF
OFF
0% – 100%
0 – 100% OPEN
CLOSED (0V)
CLOSED (24VAC)
CLOSED (0VAC)
ON
OFF
ON
OFF
100%
OPEN
CLOSED (0V)
CLOSED (24VAC)
CLOSED (0VAC)
ON
OFF
ON
ON
POWER LED
HEA
T LED
COOL
LED
FAN LED
NOTES:
• Air Valve Min% Modulation (1) set by Adj2 Pot (R4 on right)
- Range: 0% (CCW) to 50% (CW)
- Factory set to 0% (Full CCW)
• Air Valve Heat% Modulation (2) set by Adj1 Pot (R8 on left)
- Range: Min% (CCW) to 100% (CW)
- Factory set to 100% (Full CW)
• There is a 7% Deadband in the Heating Demand input, which
gives the appearance of overlap in the ranges.
• Cool LED turns On when Cooling Demand exceeds 17%
• Fan LED turns On when Air Valve modulation exceeds 35%
• Heat LED blinks during lower Heat Demand until WV is fully open
STANDARD SEQUENCE OF OPERATION: