York MILLENNIUM, Operating Instructions Manual

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YORK INTERNATIONAL
FORM 150.62-NM3
Daily Schedule / Holiday
The Daily Schedule can be programmed to control the
start and stop time of the chiller. To set the schedule,
proceed as follows: press the SET SCHEDULE / HOLI-
DAY key. The display will show the following mes-
sage:
The line under the 0 is the cursor. If the start time is
wrong, it may changed by using the UP and DOWN
arrow keys. Once the correct hour is shown, press the
ENTER key. The cursor will then move to the minute
selection. Once the correct minute is shown, press the
ENTER key. The cursor will then move to the AM/PM
selection. This value may be chosen by the UP and
DOWN arrow keys and entered by pressing ENTER.
This process may be followed until the hour, minutes,
and meridian of both the START and STOP points are
set. Once a schedule is entered, the schedule for the
next day will appear. The start and stop time of each
day may beprogrammed differently. If you want to view
the schedule without making a change, simply press
the SET SCHEDULE / HOLIDAY key until the day
you wish to view appears.
If the time is ever changed for Mon-
day, all the other days will change to
the new Monday schedule. This means
if the Monday times are not applicable
for the whole week then the excep-
tional days would need to be repro-
grammed to the desired schedule.
After SUN (Sunday) schedule appears on the display a
subsequent press of the SET SCHEDULE / HOLIDAY
key will display the Holiday schedule. This is a two
part display. The first reads:
The times may be set using the same procedure as de-
scribed above for the days of the week. Pressing the
SET SCHEDULE / HOLIDAY key a second time, the
display will read:
The line below the empty space next to the S is the
cursor and will move to the next empty space when the
ENTER/ADV key is pressed. To set the Holiday, the
cursor is moved to the space following the day of the
week of the holiday and the UP arrow key is pressed.
An * will appear in the space signifying that day as a
holiday. The * can be removed by pressing the DOWN
arrow key.
The Holiday schedule must be programmed weekly –
once the holiday schedule runs, it will revert to the nor-
mal daily schedule.
Load Limiting
The LOAD LIMIT key is used to load limit the unit.
This function modifies Load Limit setpoint found on
the unit. The message displayed when the LOAD LIMIT
key is pressed follows.
Load Limiting can be programmed from 0 to 2 using
the arrow keys. The unit will operate on either this load
limit setpoint or its local value, whichever is lower.
Load Limit 0 = no load limit
Load Limit 1 = 50% load limit - 2/4 compressor units.
Load Limit 1 = 66% load limit - 3/6 compressor units.
Load Limit 2 = 33 % - 3/6 compressor units only.
Refer to chiller unit manual for a detailed explanation
on Load Limiting.
Remote Unit Run
• ON Key
When the ON key is pressed, the unit will be given a
remote run permissive from the RCC. Assuming all
other run permissives are met, the unit will be allowed
to run. The following message will be displayed for a
few seconds after the ON key is pressed. The chiller
must be programmed for Remote mode to use this func-
tion.
When the OFF key is pressed, the unit remote run per-
missive from the RCC will be turned off. The unit will
not be allowed to run in this state. The following mes-
sage will be displayed for a few seconds after the OFF
key is pressed.
M O N S T A R T = 0 6 : 0 0 A M
S T O P = 1 0 : 0 0 P M
H O L S T A R T = 0 6 : 0 0 A M
S T O P = 1 0 : 0 0 P M
S_ M T W T F S
H O L I D A Y N O T E D B Y
*
L O A D L I M I T S T A G E
X
R E M O T E U N I T R U N
I S O N
R E M O T E U N I T R U N
I S O F F
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