FORM 160.54-O1
27
JOHNSON CONTROLS
Condenser Liquid Flow Switch (LED)
(Software version C.OPT.01.21.307 and later)
Displays the status of the ow switch in the standard
condenser tube bundle. Illuminates when liquid ow
is present. Otherwise, it is extinguished. Only appears
when the Heat Recovery is enabled.
Drop Leg Refrigerant Temperature
Displays the temperature of the refrigerant in the drop
leg between the condenser and evaporator shells, if the
sensor is present.
Sub-Cooling Temperature
Displays the difference between the Condenser Refrig-
erant temperature and the Drop Leg Refrigerant tem-
perature. The Condenser Refrigerant temperature will
be represented by the Condenser Saturation temperature.
If the Drop Leg sensor is not present, this temperature
is not displayed.
High Pressure Switch (Open / Closed)
Displays the present position of the high pressure
switch. This will indicate whether a High Pressure fault
is present.
Condenser Liquid Flow Switch
Indicates whether ow is present in the condenser.
Condenser Liquid Pump (Run / Stop)
Indicates whether Condenser liquid pump is oper-
ating.
Refrigerant Level Position
Displays the present position of the refrigerant level if
this function is enabled.
Refrigerant Level Setpoint
Displays the setpoint to which the refrigerant level is
being controlled.
Ramp Up Time Remaining
Displays the time remaining in the period in which the
Refrigerant Level setpoint is being ramped to a Refrig-
erant Level target setpoint. This is only displayed if the
Refrigerant Ramp is enabled and the value is nonzero.
Service Technicians refer to YORK Service Manual
160.54-M1.
PROGRAMMABLE
High Pressure Warning Threshold
Access Level Required: SERVICE
This value allows the user to dene the condenser pres-
sure at which the chiller will initiate a warning.
Drop Leg (Enabled / Disabled)
Access Level Required: SERVICE
When a Drop Leg Refrigerant Sensor has been installed
it must be enabled via this toggle before the system will
utilize the new, enhanced resolution input. Service Tech-
nicians refer to YORK Service Manual 160.54-M1.
FAULT ACKNOWLEDGE
(Software version C.MLM.01.11.xxx (and later) or
C.OPT.01.11.xxx (and later))
Access Level Required: SERVICE
This allows clearing of the High Condenser Pressure
Fault while Shutdown (“CONDENSER- HIGH PRES-
SURE STOPPED”). Service Technicians refer to Service
Manual 160.54-M1.
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Refrigerant Level Control
Access Level Required: SERVICE
Moves to the sub-screen allowing programming of the
refrigerant liquid level control setpoints.
Heat Recovery
(Software version C.OPT.01.21.307 and later)
Access Level Required: SERVICE
Moves to a sub screen allowing programming and view-
ing of the Heat Recovery setpoints and parameters. Only
appears when the Heat Recovery is enabled.
Head Pressure Control
(Software version C.OPT.01.21.307 and later)
Access Level Required: SERVICE
Moves to a sub screen allowing programming and
viewing of the Head Pressure Control setpoints and
parameters. Only appears when Head Pressure Control
is enabled and Heat Recovery is disabled.
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