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POWER SUPPLY
7
A fused switching isolator must be installed to the main
incoming power supply, external to the X4I. The isolator
must be fitted with a properly sized fuse to provide
adequate protection to the power supply cable used (in
accordance with local electrical and safety regulations).
1
VOLTAGE SELECT
234
X04
1
VOLTAGE SELECT
234
X04
230Vac
115Vac
EENL
L
N
E
X01
1234
XPM-TAC24
Power Supply Terminals
Ensure that the voltage select input is properly
jumpered for the incoming power. Default voltage
configuration is 230Vac.
PRESSURE SENSOR LOCATION
The system pressure sensor (P) must be located where it
will see the air pressure that is common to all of the
compressors.
SUPPLY (WET) SIDE PRESSURE CONTROL
1
P
P
2
Pressure Sensor Located Before Cleanup Equipment
Dry side pressure will be lower than the system
pressure due to pressure differential losses across air
treatment equipment. The nominal system pressure will
reduce as the air treatment differential pressure
increases.
DEMAND (DRY) SIDE PRESSURE CONTROL
1
P
2
P
Pressure Sensor Located After Shared Cleanup
Equipment
1
P
2
P
P
Pressure Sensor Located After Individual Cleanup
Equipment
Ensure each compressor is equipped with
independent excess pressure shutdown. An increase in
pressure differential across air treatment equipment can
result in excess compressor discharge pressure.
Regular routine monitoring of pressure differential
across air treatment equipment is recommended.
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