JOHNSON CONTROLS
6
FORM 145.05-SU2 (1207)
ALL UNITS
ON / OFF – MANUAL SWITCH
To turn the unit ON turn the ON/AUTO/OFF toggle
switch, located below the User Interface, from the OFF
to ON position.
Field Wiring
None required.
Programming
None required.
ON / OFF – INTERNAL CLOCK
To turn the unit ON, turn the ON/AUTO/OFF toggle
switch (located below the User Interface) from the OFF
to AUTO position. The unit will then be switched to
ON based on the ON/OFF schedule programmed in the
User Interface.
Field Wiring
None required.
Programming
Go to the
“Daily Sched”
section of the User Interface.
Change the
“Daily Schedule Status”
to ON. Program
the
“Start”
and
“Stop”
times for each day of the
week.
ON / OFF – COMMUNICATED
To turn the unit ON, turn the ON/AUTO/OFF toggle
switch (located below the User Interface) from the OFF
to AUTO position. The unit will then be switched to
ON based on a communicated input from the BAS
system.
Field Wiring
Connect the (+) wire of a shielded twisted pair to the
(+) terminal of the Network Port. Connect the (-) wire
of a shielded twisted pair to the (-) terminal of the
Network Port.
Programming
Go to the
“Daily Sched”
section of the User Interface.
Change the
“Daily Schedule Status”
to OFF.
CONDENSER WATER VALVE MINIMUM POSITION
This parameter establishes the minimum position of
the condenser water valve any time the unit is in the
ON mode.
Field Wiring
None required.
Programming
The following item must be programmed through the
“
Setpoints
” section of the User Interface:
•
“ Cond Valve Min”
– This parameter can be
set between 0 and 100%. The default value is
15%.
COMMUNICATED VFD FAN SPEED CONTROL
This feature can be ordered from the factory for units
that will be twinned together and share a common
supply duct. The feature allows a front end BAS system
to monitor the VFD fan speed of the lead unit and
communicate a VFD fan speed to the second unit.
Field Wiring
Connect the (+) wire of a shielded twisted pair to the
(+) terminal of the Network Port. Connect the (-) wire
of a shielded twisted pair to the (-) terminal of the
Network Port.
Programming
The following item must be programmed through the
“
Setpoints
” section of the User Interface:
•
“Fan Sp BAS En”
– To use this feature this pa-
rameter must be set to ON.
