York YK-EP B Operation & Maintenance Manual page 120

SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
Present Date
Access Level Required: OPERATOR
Allows the user to specify the present date. This value
is critical to logging system shutdowns accurately and
for utilizing the scheduling capabilities. When prompt-
ed to enter a date value, the user must enter the day,
month, and four-digit year (using leading zeroes as
necessary). If within range, the value will be accepted.
If out of range, the user is prompted for the information
again. At this point the user may retry the date entry, or
cancel the programming attempt.
12/24 Hr
Access Level Required: OPERATOR
Allows the user to specify the format in which the time
will be presented to the user. This setpoint will affect
the display of the time on the chiller panel and on all
reports generated. 12-hour time format will include the
AM and PM modifiers and show the range of time be-
tween 1:00 and 12:59, while the 24-hour time format
will show the range of time between 0:00 and 23:59.
Change Settings
Access Level Required: OPERATOR or higher
Used to enter the following setpoints. Pressing this key
places a green selection box around the first changeable
setpoint. The access level determines which setpoints
can be changed. Use the ▲ and ▼ keys to place the
selection box around the desired setpoint. With the
setpoint selected, press the ENTER () key. A dialog
box appears with the range of settings.
Chilled Liquid Pump Operation
Access Level Required: SERVICE
Allows a Service Technician to select Chilled Liquid
Pump control contacts (I/O Board TB2-44/45) opera-
tion as either standard or enhanced.
PRV Position
Access Level Required: SERVICE
This setpoint allows the software to be used in all
YK-EP chillers, whether equipped with the potentiom-
eter or not. The PRV position will be shown on respec-
tive screens when Enabled.
• Enabled – Automatically set to this setting if Hot
Gas Bypass or Variable Geometry Diffuser (VGD)
is enabled on the OPERATIONS Screen or Motor
Drive Type Setpoint is set to VSD or MVVSD. It
is connected to the Microboard J7.
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• Disabled – Set to this position when not equipped
with a PRV potentiometer. If equipped with a VSD,
MVVSD or the Hot Gas Bypass, or Variable Ge-
ometry Diffuser is enabled; this setpoint is auto-
matically enabled and cannot be set to disabled.
Motor Drive Type
Access Level Required: SERVICE
Allows a Service Technician to enter the applied com-
pressor motor type as either Electro-Mechanical (EM),
Solid State Starter (SSS-Mod A), Solid State starter
(SSS – Mod B), Variable Speed Drive-60 Hz Variable
Speed Drive-50 Hz, MVVSD or MVSSS.
Anti-Recycle
Access Level Required: SERVICE
Allows a Service Technician to enable or disable the
anti-recycle timer for test purposes only.
Head Pressure Control
Access Level Required: SERVICE
Allows the Service Technician to enable or disable the
Head Pressure Control feature.
Heat Recovery
Access Level Required: SERVICE
Allows the Service Technician to enable or disable the
Heat Recovery feature.
Power Failure Restart
Access Level Required: OPERATOR
Allows the user to select Manual or Automatic restart
after power failure.
Coastdown
Access Level Required: SERVICE
Allows a Service Technician to select either Standard
(electric motor) or Enhanced (15 minutes–Steam Tur-
bine applications). When Standard is selected, the
duration is programmable using the Coastdown Time
Setpoint between 240 and 900 seconds.
Motor Monitoring
Access Level Required: SERVICE
Allows the Service Technician to enable or disable the
Motor Monitoring feature.
Pre-Run
Access Level Required: SERVICE
Allows Service Technician to select either Standard
(30 seconds) or Extended (180 seconds).
FORM 160.87-OM1
ISSUE DATE: 8/24/2018
JOHNSON CONTROLS