Specifications

YORK INTERNATIONAL 11
FORM 160.48-O1
press and release the “DISPLAY HOLD” key. The mes-
sage will be displayed until the “DISPLAY HOLD” key
is again pressed and released, or 10 minutes have
elapsed, whichever comes first.
To Display CHILLED LIQUID TEMP Setpoint:
Use the “CHILLED LIQUID TEMP” setpoint key as de-
scribed on page 8 to produce the following message:
LEAVING SETPOINT = XX.X °F
NOTE: The value displayed is the actual LCWT setpoint.
For example, the value displayed in “LOCAL” or
“PROGRAM” modes is that which is operator
programmed. The value displayed in the “RE-
MOTE” mode is that base setpoint with added
temperature reset by an Energy Management
System, via remote LCWT setpoint (PWM sig-
nal) if a remote reset signal was received within
30 minutes.
To Display % CURRENT LIMIT Setpoint:
Use “% CURRENT LIMIT” setpoint key as described on
page 8 to produce the following message:
CURRENT LIMIT = XXX ° FLA
NOTE: The value displayed is the actual % current limit
setpoint. For example; the value displayed in
“LOCAL” or “PROGRAM” mode is that which is
operator programmed. The value displayed in
the “REMOTE ” mode is that which has been pro-
grammed by the Energy Management System
via the remote current limit setpoint input.
If chiller is equipped with a YORK Solid State Starter,
the message is:
CURRENT LIMIT = XXX % FLA; *MTR CUR = 000 FLA
NOTE: On Solid State Starter applications, this value is
programmed at the YORK factory. A special ac-
cess code is required.
To Display PULL DOWN DEMAND Setpoint:
Use “PULL DOWN DEMAND” setpoint key as described
on page 8 to produce the following message:
SETPOINT = XX MIN @ XX% LOAD, XX MIN LEFT
To Display CLOCK Setpoint (Time of Day):
Use “CLOCK” setpoint key as described on page 10 to
MON XX:XX AM HIGH LINE VOLTAGE
is displayed. The high line voltage check is disabled along
with the low line voltage check if desired. Refer to the
following chart for thresholds.
For security reasons, a special access code is required
to program the supply voltage range. The supply volt-
age range is programmed at the factory and should only
be changed by a service technician.
LOW/HIGH VOLTAGE TRIP/RESET VALUES
low line voltage high line voltage
compressor motor
operating point operating point
supply voltage
cutout-(V) cutin-(V) cutout-(V) cutin-(V)
range - (V)
(on fall) (on rise) (on risei) (on fall)
200-208 160 174 227 220
220-240 185 200 262 254
380 305 331 415 402
400 320 349 436 423
415 335 362 454 440
440-480 370 400 524 508
550-600 460 502 655 635
Supply voltage
range disabled
None 0 None 0
PURGE - There is one programmable purge setpoint:
“EXCESS PURGE THRESHOLD”.
The EXCESS PURGE THRESHOLD is the number of
purge exhausts that are allowed to occur in 1 hour of chiller
operating time before an excess purge warning message
is displayed. If the number of purge exhausts exceed this
value, “WARNING - EXCESS PURGE” is displayed on
the keypad display (Refer to description of this message
in “DISPLAY MESSAGES” section of this book). The DIS-
PLAY DATA key is used to program this setpoint. It is pro-
grammable from 10 to 30 purge exhausts per hour by op-
erating personnel. The default value is 20 purge ex-
hausts per hour. Field service personnel can program this
setpoint over a wider range (Refer to service manual Form
160.48-M2, Section 13). The typical value would be the
default value 20/hour. However, the number can be low-
ered to detect small leaks.
DISPLAYING SYSTEM SETPOINTS
The currently programmed setpoint values can be
viewed at any time (see page 20) in “SERVICE”,
“LOCAL” or “REMOTE” operating mode as follows:
• Press and release the appropriate “Setpoint” key - the
message will be displayed for 2 seconds.
- or -
• Press and hold the appropriate “Setpoint” key - the
message will be displayed as long as the key is
pressed.
- or -
• Press and release appropriate “Setpoint” key, then