York YMC2 User Manual

JOHNSON CONTROLS
52
FORM 160.84-OM1
ISSUE DATE: 9/21/2017
SECTION 3 - OPTIVIEW™ CONTROL CENTER FUNCTIONS AND NAVIGATION
OVERVIEW
This screen displays the pertinent parameters associat-
ed with capacity control in relation to Leaving Chilled
Liquid temperature, current and pressure overrides, and
anti-surge control. This screen also provides a means
for a Service Technician to control VGD, Speed, and
Optional Hot Gas Bypass Valve manually for mainte-
nance or service.
DISPLAY ONLY
Evaporator Pressure
Displays the pressure in the evaporator.
[Evaporator Pressure] Override Threshold
Displays the evaporator pressure setpoint below which
the low evaporator pressure capacity control override
takes effect.
Condenser Pressure
Displays the pressure in the condenser.
[Condenser Pressure] Override Threshold
Displays the condenser pressure setpoint above which
the high condenser pressure capacity control override
takes effect.
Input Current % FLA
Displays the percent of useful job full load current
presently supplied to the chiller, determined from the
highest of the three phase Input Currents/(Input Job
FLA setting/0.9).
[Input Current % FLA] Override Threshold
Displays the active input current percent limit, which
is the minimum of Local Input Current Limit, Remote
Input Current Limit, and Pulldown Current Limit or
BAS (ISN) current limit.
Motor Current % FLA
Displays the percentage of maximum motor current
delivered to the motor, determined from the highest of
the three phase Motor Currents/Maximum Motor Cur-
rent Limit.
[Motor Current % FLA] Override Threshold
Displays the active motor current percent limit, which
is a percentage of the minimum of VSD and motor
maximum current limits.
Entering Chilled Liquid
Displays the temperature of the chilled liquid as it en-
ters the evaporator.
CAPACITY CONTROL SCREEN
LD17931a
FIGURE 16 - CAPACITY CONTROLS SCREEN

York YMC2 Specifications

General

Brand	York
Model	YMC2
Category	Chiller
Language	English