York YCAJ44HE8, Installation, Operation And Maintenance Manual

Page: 28 / 92

28 YORK INTERNATIONAL
SWITCH 1
OPEN:
The chilled liquid temperature setpoint can only be pro-
grammed from 40-70°F.*
CLOSED:
The chilled liquid temperature setpoint can be pro-
grammed from 15-70°F. *
SWITCH 2
OPEN:
The low ambient cut-out is fixed at 25°F.
CLOSED:
The low ambient cut-out is programmable from 0-50°F. A
low ambient kit MUST be installed if the switch is placed
in this position.
SWITCH 3
OPEN:
DO NOT USE this mode at present.
CLOSED:
This should be selected in all applications, otherwise
printer communication problems may result. This mode
will also be necessary to allow operation of options to be
developed in the future.
SWITCH 4
OPEN:
Chiller control will be from return water temperature.
CLOSED:
Chiller control will be from leaving water temperature.
SWITCH 5
OPEN:
Display messages will show units of measure in English
units (°F, PSI, etc.)
CLOSED:
Display messages will show units of measure in Metric
units (°C, kPa, etc.)
SWITCH 6
OPEN:
This MUST be selected for chillers with “4” or more
fans where each refrigerant system will have fans
of its own.
CLOSED:
This must be selected for “2” fan chillers where
fans are shared by both refrigerant circuits.
C O M F O R T
C O O L I N G
B R I N E & P R O C E S S
D U T Y
S T A N D A R D
A M B I E N T
L O W A M B I E N T
C O N T R O L
L O C A L C O N T R O L
M O D E
R E M O T E C O N T R O L
M O D E
R E T U R N W A T E R
C O N T R O L
L E A V I N G W A T E R
C O N T R O L
E N G L I S H U N I T S
R E A D O U T
M E T R I C U N I T S
R E A D O U T
S T A N D A R D C O N D E N S E R
F A N C O N T R O L
S H A R E D C O N D E N S E R
F A N C O N T R O L
* Positioning of this switch also affects the range of adjustments on the Suction Pressure Cut-out (page 37) and the Low Leaving Water Temp
Cut-out (page 36).