York 371-01200-010, Эксплуатация и техническое обслуживание, Страница: 12 / 60

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YORK INTERNATIONAL
DISPLAYING SYSTEM SETPOINTS
The currently programmed Setpoint values can be
viewed at any time (see page 22) in SERVICE, LO-
CAL 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 the appropriate Setpoint key,
then press and release the DISPLAY HOLD key.
The message 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 CHILLED LIQUID TEMP setpoint key as described
on page 10 to produce the following message:
LEAVING SETPOINT = XX.X °F
NOTE: The value displayed is the actual LCWT set-
point. For example, the value displayed in LO-
CAL or PROGRAM modes is that which is
operator programmed. The value displayed in
the REMOTE mode is that base setpoint with
added temperature reset by an Energy Man-
agement System, via remote LCWT setpoint
(PWM signal) if a remote reset signal was re-
ceived within 30 minutes.
To Display % CURRENT LIMIT Setpoint:
Use % CURRENT LIMIT setpoint key as described
above 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
access code is required.
To Display PULL DOWN DEMAND Setpoint:
Use PULL DOWN DEMAND setpoint key as described
on page 10 to produce the following message:
SETPOINT = XXX MIN @ XX % FLA XXX MIN LEFT
To Display CLOCK Setpoint (Time of Day):
Use CLOCK setpoint key as described above to pro-
duce the following message:
TODAY IS DAY XX:XX AM/PM 1/1/92
To Display DAILY SCHEDULE Setpoints:
• Press and hold the DAILY SCHEDULE setpoint key.
The chiller start and stop times for each day of the
week are sequentially displayed, beginning with
Sunday and ending with Holiday. The display will
continuously scroll until the DAILY SCHEDULE key
is released.
– or –
• Press and release the DAILY SCHEDULE setpoint
key. Then press and release the DISPLAY HOLD
key. The chiller start and stop times for each day of
the week are sequentially displayed beginning with
Sunday and ending with Holiday. The display will
continuously scroll until the DISPLAY HOLD key is
again pressed and released, or 10 minutes have
elapsed, whichever comes first.
The display message for DAILY SCHEDULE will scroll
in the following sequence:
SUN START = 08:30 AM STOP = 06:00 PM
MON START = 05:00 AM STOP = 07:00 PM
TUE START = 05:00 AM STOP = 07:00 PM
WED START = 05:00 AM STOP = 07:00 PM
THU START = 05:00 AM STOP = 07:00 PM