York OPTIVIEW YK, Service Instructions Manual

Page: 84 / 390

84
FORM 160.54-M1
ISSUE DATE: 10/25/2019
SECTION 5 - MICROBOARD 031-03630-001
JCI COMPANY CONFIDENTIAL JOHNSON CONTROLS
CONFIGURATION AND SETUP
The following functions are entered as setpoints on the
SETUP Screen. See entry instructions in SECTION
33 - SYSTEM CALIBRATION, SERVICE SETPOINTS,
AND RESET PROCEDURES
of this manual.
Chilled Liquid Pump Operation –
Determines
Chilled Liquid Pump control contacts (I/O Board TB2-
44/45) operation when chiller shuts down on cycling
shutdowns. Selections are:
1. Standard – Contacts open at completion of System
Coastdown after all shutdowns except LEAVING
CHILLED LIQUID – LOW TEMPERATURE.
On this shutdown, they remain closed, causing
the pump to continue to run while the chiller is
shutdown.
2. Enhanced – Contacts open at completion of Sys-
tem Coastdown after all shutdowns except LEAV-
ING CHILLED LIQUID – LOW TEMPERA-
TURE, MULTI-UNIT CYCLING- CONTACTS
OPEN and SYSTEM CYCLING – CONTACTS
OPEN. On these shutdowns, they remain closed,
causing the pumps to continue to run while the
chiller is shutdown.
Motor Drive Type – Configures the program for the
applicable compressor motor drive type. Selections
are:
1.
EM –
Electromechanical Starter
2.
SSS-Mod A –
Style A Solid State Starter
3.
SSS-Mod B –
Style B Solid State Starter
4.
VSD-60Hz –
Variable Speed Drive, 60Hz
5.
VSD-50Hz –
Variable Speed Drive, 50Hz
6. MVVSD-60Hz – Medium Voltage VSD, 60 Hz
7. MVVSD-50Hz – Medium Voltage VSD, 50 Hz
8. MVSSS – Medium Voltage Solid State Starter
Anti-recycle – Enables or Disables the Anti-recycle
timer. Selections are:
1. Enabled – Enables the anti-recycle timer. Solid
State Starters and electromechanical starter appli-
cations cannot be started at intervals shorter than
once every 30 minutes. VSD applications can be
started at the completion of System Coastdown
up to 5 times. On the 5th shutdown, a 10-minute
timer is started and restart is inhibited until the
timer has elapsed.
2. Disabled – Disables the anti-recycle timer. Chill-
er can be started at the completion of System
Coastdown, regardless of how long the chiller had
been running.
The Anti-recycle timer must never be
disabled unless advised by YORK factory.
Power Failure Restart – Determines the course of ac-
tion required to restart the chiller, if a power failure
occurs while the chiller is running. Selections are:
1. Manual – Requires a manual reset after power is
restored. The chiller cannot be started until the
operator moves the keypad Start-Run-Stop/Reset
rocker switch to the stop/reset position.
2. Auto – Chiller will automatically restart when
power is restored.
Coastdown – Determines the “Coastdown” duration
(oil pump run duration after shutdown) and whether
the “Motor Controller – Loss of Current” check and
anti-recycle function is performed while the chiller is
running. Selections are:
1. Standard – Electric motor applications. When
STANDARD is selected, the Coastdown Time
setpoint appears. (See Coastdown Time on page
85 ). This setpoint is used to set the duration
over the range of 240 (default) to 900 seconds or
150 (default) to 900 seconds as determined by the
selection made for the Chiller Style/Compressor
setpoint (on the OPERATIONS Screen).
2. Enhanced – “Coastdown” is 15 minutes in dura-
tion. Steam Turbine applications. “Motor Con-
troller - Loss of Current” check and anti-recycle
function is not performed since there is no motor
current.
Pre-run – Determines the duration of the “System Pre-
lube” period. Selections are:
1. Standard – “System Pre-lube” is 50 seconds in
duration.
2. Extended – “System Pre-lube” is 180 seconds in
duration.
Oil Pump Package – Configures the program for
either Variable Speed Drive Oil Pump or Fixed Speed