Specifications

75
JOHNSON CONTROLS
Form 201.28-NM1.EN.PED/CE (0211)
8
SETPOINTS KEY
Setpoints Key Operation
Cooling setpoints and ranges may be programmed by
pressing the SETPOINTS key. The first setpoint entry
screen will be displayed as shown below. The first line of
the display will show the chiller default (DEF), minimum
acceptable value (LO) and maximum acceptable value
(HI). The second line shows the actual programmed
value. The table below shows the allowable ranges for
the cooling setpoints and Control Ranges. Note that the
Imperial units are exact values while the Metric units are
only approximate.
SETPOINTS DEF LO HI
LOCAL COOLING SETPOINT = XX.X °F
Pressing the SETPOINTS key a second time or the ▼
(ARROW) key will display the leaving chilled liquid
Control Range, default, and low/high limits.
SETPOINTS DEF LO HI
LOCAL CONTROL RANGE = +/- X.X °F
Pressing the SETPOINTS key or the ▼ (ARROW) key
a third time will display the remote setpoint and cooling
range. This display automatically updates about every 2
seconds. This remote setpoint message is show below:
SETPOINTS REMOTE SETPOINT = XX.X °F
REMOTE CONTROL RANGE = +/- X.X °F
If there is no remote setpoint being utilized, the remote
setpoint value will be displayed as XXXXXX and the
remote Control Range will display XXX.
Pressing the SETPOINTS key or the Arrow key a fourth
time will bring up a screen that allows the Maximum
Remote Temperature Reset to be programmed. This
message is show below:
SETPOINTS DEF LO HI
MAXIMUM REMOTE TEMP RESET = XX °F
The values displayed under each of the key presses may
be changed by keying in new values and pressing the
 (ENTER) key to store the new value into memory.
Where more than one value may be keyed in on a
display, a portion of the data that does not need updating
may be skipped by pressing the  (ENTER) key. The 
(ENTER) key must also be pressed after the last value in
the display to store the data into memory.
The ▲ (ARROW) key allows scrolling back through the
setpoints displays.
The minimum, maximum, and default values allowed
under the SETPOINTS key are provided in the following
table.
TABLE 7 - SETPOINT LIMITS
PROGRAM VALUE MODE LOW LIMIT HIGH LIMIT DEFAULT
Leaving Chilled Liquid Setpoint
Water Cooling
40.0°F 60.0°F 44.0°F
4.4°C 15.6°C 6.7°C
Glycol Cooling
15.0°F 70.0°F 44.0°F
-9.4°C 15.6°C 6.7°C
Leaving Chilled Liquid Control Range -
1.5°F 2.5°F 2.0°F
0.8°C 1.4°C 1.1°C
Max. Remote Temperature Reset -
2°F 40°F 20°F
1°C 22°C 11°C