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FORM 160.72-O1 (810)
figure 17 -
SETPOINTS SCREEN
hgvraT – hot gas Bypass ratio
The percent the Hot Gas valve will open for each per-
cent the PRV's goes below the Hot Gas Ratio Calcula-
tion
Tsp3 - hot gas Bypass Temperature Controller
Degrees below the Leaving Chilled Liquid Temperature
Setpoint that the Hot Gas Valve will begin to open.
rrsp2 – hot gas ramp rate
Rate in Percent per second the Hot Gas valve will
open.
demand limit Mode
Current / Power
Determines the source of motor limit control
Current – By CT's on the motor leads
Power - KW meter
pre-rotation vane Minimum startup position
The minimum position for the vanes at startup
JOHNSON CONTROLS
seTpoinTs sCreen
rrsp8 – prv ramp rate
Rate in Percent per second the PRV's will open.
override off delay
Displays the time delay required for pressure overrides
to clear
Minimum evaporator pressure for Tempera-
ture
This setpoint defines the minimum evaporator pressure
required at startup before the leaving chilled liquid is
considered valid for temperature control of the Pre Ro-
tation Vanes (PRV's)
Temperature Controller auto Mode Tempera-
ture
Displays the temperature difference between the leav-
ing chilled liquid setpoint and the leaving chilled liquid
temperature required to begin automatic control of the
Pre Rotation Vanes (PRV's) to maintain setpoint.
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