Manual

Installation Guide
Differential Pressure Switches
CSE-1102/1103
Mounting
Select a mounting location that is free from vibration.
Mount in any vertical plane in order to obtain the
lowest specied operating setpoint. Avoid mounting
with the sample line connections in the “up” posi-
tion. Surface mount via the two 3/16" diameter holes
in the integral mounting bracket. The mounting
holes are 3-7/8" apart.
1. Align the unit vertically with the barbed ports
at the boom (alternately pointing to the le or
right).
2. Using the two 3/16" mounting holes, aach to the
ducting.
3. Using the knockout, aach a 1/2" conduit.
4. Connect wires to the screw terminals. See the
Wiring section.
Connecting Sensing Ports
NOTE: A sampling probe should be located
a minimum of 1.5 duct diameters
downstream from the air source. Install the
sampling probe as close to the center of the
airstream as possible.
NOTE: For sample lines of up to 10 feet, 1/4" OD
tubing is acceptable. For lines up to 20 feet,
use 1/4" ID tubing. For lines up to 60 feet,
use 1/2" ID tubing.
To aach a sampling line:
• To a CSE-1102 with barbed connections, use 1/4
to 3/8" (6 to 9 mm) tubing for air sampling lines
and connect the tubing to the appropriate port(s).
• To a CSE-1103 with compression connections,
connect 1/4" OD copper to the compression
ing(s).
Connect the sampling lines according to the applica-
tion:
•
PositivePressureOnly: Connect the sample line
to inlet H. (Inlet L remains open to the atmo-
sphere.)
•
NegativePressureOnly: Connect the sample line
to inlet L. (Inlet H remains open to the atmo-
sphere.)
•
TwoNegativeSamples: Connect the higher
negative sample to inlet L. Connect the lower
negative sample to inlet H.
•
TwoPositiveSamples: Connect the higher posi-
tive sample to inlet H. Connect the lower positive
sample to inlet L.
•
OnePositiveandOneNegativeSample: Con-
nect the positive sample to inlet H. Connect the
negative sample to inlet L.
Mounting 1
Connecting Sensing Ports 1
Optional HFO-001x Sensor Probe 2
Wiring 2
Setpoint Adjustment 2
Maintenance 2
(CSE-1103 Shown)