Specifications

FORM 150.72-NM1 (908)
109
JOHNSON CONTROLS
6
 4. Put the unit into Service Mode (as described under
the Control Service and Troubleshooting section)
and cycle each condenser fan to ensure proper
rotation.
 5. Prior to this step, turn system 2 off (if applicable
–refer to Option 2 under “Unit Keys” section for
more information on system switches). Connect a
manifold gauge to system 1 suction and discharge
service valves.
Place the Unit Switch in the control panel to the
“ON” position. As each compressor cycles on,
ensure that the discharge pressure rises and the
suction pressure decreases. If this does not oc-
cur, the compressor being tested is operating in
the reverse direction and must be corrected. After
verifying proper compressor rotation, turn the
Unit Switch to “OFF.”

     

    
-


 6. Turn system 1 “OFF” and system 2 “ON” (refer
to Option 2 under “UNIT KEYS” section for more
information on system switches).
Place the Unit Switch in the control panel to the
“ON” position. As each compressor cycles “ON”,
ensure that the discharge pressure rises and the
suction pressure decreases. If this does not oc-
cur, the compressor being tested is operating in
the reverse direction and must be corrected. After
verifying proper compressor rotation, turn the
Unit Switch to “OFF”.
 

on
OPTIONS
Display Language
Sys 1 Switch
Sys 2 Switch
Chilled Liquid
* Ambient Control
Local/Remote Mode
Control Mode
Display Units
* Lead/Lag Control
* Fan Control
Manual Override
Current Feedback
** Soft Start
** Unit Type
** Refrigerant Type
** Expansion Valve Type
COOLING SETPOINTS
Cooling Setpoint
Range
EMS-PWM Max. Setpoint
PROGRAM
Discharge Pressure Cutout
Suct. Pressure Cutout
Low Amb. Temp. Cutout
Leaving Liquid Temp. Cutout
Anti-Recycle Time
Fan Control On Pressure
Fan Differential Off Pressure
Total # of Compressors
* Number of Fans/System
* Unit/Sys Voltage
Unit ID
* NOT ON ALL MODELS
** VIEWABLE ONLY
TABLE 7 – SETPOINTS ENTRY LIST