
FORM 160.54-O1
ISSUE DATE: 9/10/2014
JOHNSON CONTROLS
102
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
Delta P/P
The value calculated by the Condenser and Evaporator
pressures as reported by the Adaptive Capacity Control.
For fields requiring access level of SER
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VICE. Service Technicians refer to the
OptiView Control Center - Service Instruc
-
tions (Form 160.54-M1) for operation
instructions and explanation of all pro-
grammable setpoints and displayed values.
PROGRAMMABLE
Local Motor Current Limit
Allows the user to specify the maximum allowed mo-
tor current (as a percentage of FLA). When the motor
current reaches this value, the Pre-rotation Vanes will
not be permitted to open further. If the motor current
rises above this value, the Pre-rotation Vanes will close
to reduce the current to this value.
Pulldown Demand Limit
Allows the user to specify the current limit value (as a
percentage of FLA) to which the chiller will be limited
during the specified pulldown limit time. This value
will override the Motor Current Limit value during this
time period. This function is used to provide energy
savings following chiller start-up.
Pulldown Demand Time
Allows the user to set a period of time for which the
pulldown demand limit will be in effect after the chiller
starts.
Surge Sensitivity
Allows the user to define the surge detection sensitivity
of the ACC Surge Detection.
Surge Margin Adjust
When the ACC maps a surge point, it will begin to
adjust the chiller Command Frequency and vane con-
trols at a certain Margin from the mapped point. This
programmable value allows the Service Technician to
modify the Margin at which these adjustments will be-
gin to take place.
Manual Surge Point
This key will force the ACC to map a surge detection
at the present operating conditions. Mapping a point at
these conditions will cause the ACC to make adjust-
ments to the Command Frequency in the future in or-
der to prevent the chiller from operating at the condi-
tions mapped.
USE WITH CAUTION
.
ACC Auto Map Print (Enabled / Disabled)
The chiller monitors the ACC communications and
when a surge point is mapped, a short report of system
parameters is printed. When this function is active, all
other printing capability is disabled.
ACC Map Report
The chiller requests the entire surge map from the
ACC. As the map is received, the parameters for each
point are printed.
Surge Map Clear
This key instructs the ACC to clear all of the surge
points presently mapped. This key will require confir-
mation of its selection by entry of a special password.
USE WITH CAUTION
.
NAVIGATION
Home
Access Level Required: VIEW
Returns user to HOME Screen.
VSD
Access Level Required: VIEW
Returns user to VSD Screen.