Trane CVGF-SVU02B-E4 Operation And Maintenance Manual page 52

52
Control System
Components
B) Refrigerant Differential Pressure
Indication Output:
A 2 to 10 Vdc analog output is
provided instead of the previous
condenser pressure output
signal. This 2 signal corresponds
to a predetermined minimum
and maximum pressure settings
setup at commissioning of this
feature. This relationship can be
altered using TechView
required.
The "Minimum Delta Pressure"
is typically set to 0 psi and will
then correspond to 2 Vdc. The
"Maximum Delta Pressure " is
typically set to 30 psi and
corresponds to 10 Vdc.
Figure 19. Delta pressure setting
10 vdc
2 vdc
Minimum Delta
Pressure Setting
The Minimum Delta Pressure
Calibration setting has a range of
0-400 psid (0-2758 kPa) in
increments of 1 psid (1kPa). The
Maximum Delta Pressure
Calibration setting has a range of
1-400 psid (7-2758 kPa) in
increments of 1 psid (1kPa). The
condenser refrigerant pressure is
based on the Condenser
™ if Refrigerant Temperature sensor.
The evaporator refrigerant
pressure is based on the
Saturated Evaporator Refrigerant
Temperature Sensor.
Maximum Delta
Pressure Setting
CVGF-SVU02B-E4