• DUCT PRESS CNTRL = HIGH, LOW, AVER-
AGE, DUCT PRESSURE 1 ONLY.
Date / Time Key
Enter Correct Date and Time.
FLEXSYS HEATING
Field Wiring
Connect the FlexSys Slab Temp Sensor wiring to ter-
minals 15 and 16 of terminal block CTB1 located in-
side the control panel
(see Appendix 1).
Miscellaneous Connections
All units provided with a VFD include a factory mount-
ed static pressure sensor (SPS1). The unit can also
have an optional second static pressure sensor, (SPS2).
The second static pressure transducer would be used
if the main supply duct split into two main branches.
The control can be programmed to maintain the low-
est input, highest input or the average of the two. The
sensor is factory wired and requires field installation
of 1/4” ID sensor tubing to the selected duct location.
A field supplied static pressure probe and tubing must
be installed in the field prior to unit start-up.
Refer to the unit IOM Form 145.05-NOM3 for details
on how to install the static pressure probe and tubing.
Programming
Options Key – Heating Subsection
• HEATING SYS TYPE = NONE, ELECTRIC,
HOT WATER/STEAM.
• ELEC HEAT CAPACITY = 11 KW, 17 KW, 34
KW, 68 KW.
Setpoints Key – Heating Subsection
• HEATING SAT = 80.0 – 115.0
0
F.
• UNOCC ZONE HEATING SETPOINT = 45.0 –
99.0
0
F.
• HEAT LIMIT TEMPERATURE = 100.0 – 150.0
0
F.
• RAT HEATING SETPOINT = 55
0
F - RAT
COOLING SETPOINT -2.0
0
F.
Program Key - Heating Subsection
• HEATING SYSTEM = USER ENABLED
• NIGHT SET BACK = USER ENABLED, USER
DISABLED.
• HW VALVE ACTION = DIRECT, REVERSE.
Only used with Hot Water and Steam
Heat options.
CONDENSER WATER CONTROL
Field Wiring
No additional connections required.
Miscellaneous Connections
No additional connections required.
Programming
Options Key – Condenser Subsection
• CONDENSER TYPE = WATER COOLED.
• CONDENSER VALVES INSTALL = NONE,
COND ONLY, COND W/BYPASS.
• WATER FLOW SWITCH = NOT INSTALLED,
INSTALLED.
Setpoints Key – Condenser Subsection
• COND VALVE MIN POS = 0.0% TO 100%.
• COND BYPASS MAX POS= 0.0% TO 100%.
• DISC PRESSURE SP MIN = 0 PSIG TO 650
PSIG.
• DISC PRESSURE SP MAX = 0 PSIG TO 650
PSIG.
Program Key - Condenser Subsection
• COND WATER CONTROL = USER DIS-
ABLED, USER ENABLED.
JOHNSON CONTROLS
18
FORM 145.05-SU3 (611)
ISSUE DATE 6/01/2011
SECTION 5 - FLEXSYS UNITS