York YLUA0248 Series, Installation Operation & Maintenance

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JOHNSON CONTROLS
110
FORM 150.73-NM2
ISSUE DATE: 09/07/2020
SECTION 7 – UNIT CONTROLS
ENTRY KEYS
00068VIP
The Entry Keys allows the user to view, change pro-
grammed values. The ENTRY keys consist of an ↑ (UP)
arrow key, ↓ (DOWN) arrow key, and an ENTER/ADV
key.
Up and Down Arrow Keys
Used in conjunction with the OPER DATA, HISTORY,
COOLING SETPOINTS, SCHEDULE/ADVANCE
DAY, OPTIONS and CLOCK keys, the ↑ (UP) and ↓
(DOWN) arrow keys allow the user to scroll through
the various data screens. Refer to the section on “DIS-
PLAY/PRINT” keys for specific information on the
displayed information and specific use of the ↑ (UP)
and ↓ (DOWN) arrow keys.
The ↑ (UP) arrow key and ↓ (DOWN) arrow key are
also used for programming the control panel such as
changing numerical or text values when programming
cooling setpoints, setting the daily schedule, changing
safety setpoints, unit options, and setting the clock.
Enter/adv Key
The ENTER/ADV key must be pushed after any change
is made to the cooling setpoints, daily schedule, safety
setpoints, chiller options, and the clock. Pressing this
key “enters” the new values into memory. If the EN-
TER/ADV key is not pressed after a value is changed,
the changes will not be “entered” and the original val-
ues will be used to control the chiller.
Programming and a description on the use of the ↑ (UP)
arrow key, and ↓ (DOWN) arrow, and ENTER/ADV
keys are covered in detail under the SETPOINTS, and
UNIT keys.