York Millennium YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 User Manual

YORK INTERNATIONAL 23
FORM 160.49-O2
Therefore:
(100%) (50% x 200) = 100A = Vanes stop open-
ing
(104%) (50% x 200) = 104A = Vanes driven to-
ward close position.
SYSTEM RUN – AUTO VANES
Displayed when the chiller is running, the MicroCom-
puter Control Center is in SERVICE mode, and the
vanes are operating in AUTO mode.
SYSTEM RUN – VANES OPENING
Displayed when the chiller is running, the MicroCom-
puter Control Center is in SERVICE mode with:
• The vanes operating in AUTO mode and opening to
maintain the leaving chilled water temperature
setpoint.
– or –
• The operator has pressed the vanes OPEN key on
the keypad.
SYSTEM RUN – VANES CLOSING
Displayed when the chiller is running, the MicroCom-
puter Control Center is in SERVICE mode with:
• The vanes operating in AUTO mode and closing to
maintain the leaving chilled water temperature
setpoint.
– or –
• The operator has pressed the vanes CLOSE key on
the keypad.
SYSTEM RUN - VANES HOLDING
Displayed when the chiller is running, the MicroCom-
puter Control Center is in SERVICE mode, and the
operator has pressed the vanes HOLD key.
SYS READY TO START – VANES OPENING
Displayed when the chiller is running and the operator
has pressed the vanes OPEN key on the keypad.
SYS READY TO START – VANES CLOSING
Displayed when the chiller is not running and the op-
erator has pressed the vanes CLOSE key on the key-
pad.
SYS READY TO START – VANES HOLDING
Displayed when the chiller is running and the operator
has pressed the vanes HOLD key on the keypad.
SYSTEM RUN – LEVEL VALVE OPENING
Displayed as a foreground message when manual re-
frigerant level control has been selected using the “Spe-
cial Setpoints Procedure” in Service manual, Form
160.49-M3 and operating in SERVICE mode. Indicates
an “OPEN” command is being output to the variable
orifice. Manual level control should be selected only by
a qualified service technician.
SYSTEM RUN – LEVEL VALVE CLOSING
Displayed as a foreground message when manual re-
frigerant level control has been selected using the “Spe-
cial Setpoints Procedure” in Service manual, Form
160.49-M3 and operating in SERVICE mode. Indicates
a “CLOSE” command is being output to the variable
orifice. Manual level control should be selected only by
a qualified service technician.
SYSTEM RUN – AUTO LEVEL CONTROL
Displayed as a foreground message when manual re-
frigerant level control has been selected using the “Spe-
cial Setpoints Procedure” in Service manual, Form
160.49-M3 and operating in SERVICE mode. Indicates
that neither a “CLOSE” nor “OPEN” command is being
output to the variable orifice but is in “AUTO” mode.
Manual level control should be selected only by a quali-
fied service technician.
SYSTEM RUN – LOW PRESSURE LIMIT IN EFFECT
Displayed when the chiller is running and the evapora-
tor pressure falls to 56.2 PSIG (R-22); 27 PSIG (R-
134a). Simultaneously, the pre-rotation vanes will be
prevented from further opening. This action maintains
chiller operation to prevent low-evaporator-pressure
shutdown at 54.3 PSIG (R-22); 25 PSIG (R-134a).
When the evaporator pressure rises to 57.5 PSIG (R-
22); 28 PSIG (R-134a), the vanes will be permitted to
open. Low pressure limit feature is not used when pro-
gram jumper (JP3) is cut (Brine application).
SYSTEM RUN – HIGH PRESSURE LIMIT IN EFFECT
Displayed when the chiller is running and the condenser
pressure rises to 246.3 PSIG (R-22); 162.5 PSIG (R-
134a). Simultaneously, the pre-rotation vanes will be
inhibited from further opening. This action occurs to
prevent system shutdown on high condenser pressure

York Millennium YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 Specifications

General

Brand	York
Model	Millennium YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4
Category	Chiller
Language	English