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If manual control is desired, press the or key. One
of the following messages will be displayed:
L E A D / L A G
C O N T R O L
M A N U A L
S Y S
L E A D / L A G
C O N T R O L
M A N U A L
S Y S
System 1, 2, 3 or 4 can be selected as the lead by pressing
the or key. The ENTER key must be pressed to
save the selection in memory.
Automatic/Manual Power Failure Restart
P O W E R
F A I L
A U T O M A T I C
The chiller may be selected for "Automatic" or "Man-
ual" restart after a power failure. In most instances,
"Automatic Restart" is preferred to allow the chiller to
automatically restart when power is reapplied after a
power failure. When "Manual" is selected, the chiller
will not operate after re-application of power until the
ON / OFF Rocker Switch on the keypad is cycled OFF
and then ON.
In most applications, it is undesirable
to use Manual Reset on power failure
since chillers normally are required
to auto‑restart after a power failure.
8.3
PROGRAMMING "DEFAULT" VALUES
Programmable values may be individually programmed at
start-up or any time thereafter. For ease of programming,
once the type of refrigerant is programmed in under the
Program key, a "defaults password" may be programmed
to automatically program default values into memory.
This will preset all programmable values under the
Program key to values that will allow operation of the
chiller under most operating conditions. This allows
quick start-up programming for typical chilled water
applications.
To program the default values into memory, first press
the PROGRAM key followed by the ENTER key, to
program the "refrigerant type." Press the Program key
again, key in the numbers "6140", then press Enter. As
166
1
L E A D
2
L E A D
R E S T A R T
the code is being keyed in, the digits are not displayed
but are shown as "*" as shown:
P R O G R A M
M O D E
* * * *
When the Enter key is pressed, the following message
will appear:
D E F A U L T
S E T P O I N T S
1
=
Y E S ,
0
Key in a "1" for if default setpoints are required, or a "0"
for individually programmed values, then press Enter to
store the selection into memory.
If individual programming is selected, the display will
now return to the Status display. If a default setpoints
have been selected, the display will momentarily dis-
play the message shown below before returning to the
Status display:
P R O G R A M
O P T I O N S
T O
D E F A U L T
It is often easier to select Default
Setpoints and then reprogram a few
that require changing rather than
programming each individual value
from scratch.
A list of the default values entered into memory, if this
program option is selected, is shown below:
Programmable Value
Discharge Pressure Cutout
Low Ambient Cutout
High Ambient Temperature Cutout
Discharge Pressure Unload
High Motor Current Unload
Anti-Recycle Timer
Leaving Chilled Liquid Temp Cutout
Suction Pressure Cutout
?
=
N O,
1
S E T
V A L U E S
6140
Default
Setting
R22 399 PSIG (28 Bar)
Std. Amb.
25°F (-4°F)
Low Amb.
25°F (-4°F)
130°F (38°C)
R22 375 PSIG (26 Bar)
100%
600 sec.
36°F (2°C)
R22 44 PSIG (3 Bar)
JOHNSON CONTROLS
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