Wiring Setra Lite - Setra Systems Lite Installation & Operating Manual

Attach pressure tubing as follows for final connections:
1. Install the supplies silicone tube (with integrated external spring) and attached barbed
tube adapter on the rear face of the RPS unit onto the end of the 0.25" field tubing. This
short length of tubing is used as a safety to prevent any kinking inside tight spaces. From
here you would add your typical run of 1/8"ID x 1/4"OD tubing between the pressure
pickup and the Setra Lite.
2. Push the open end of the 1/8" ID soft silicone tubing onto port on the rear of the Setra Lite.
3.3.1 Considerations to avoid kinked or damaged tubing
Pull tubing runs in a manner that protects the tubing from being damaged, cut, or crimped. Any
break or bend in the tubing may affect the integrity of the pressure signal. DO NOT TIGHTEN
STRAIN RELIEFS at the electrical boxes so that they crimp the tubing. Leave the strain reliefs
open enough so that the tubing can slide in and out of the box with a few inches of play. Prior
to use, tape the open ends of the tubes closed to prevent contamination during construction.
During final installation of the Pressure Pickup Port, careful observation should be made of
how the tubing gets pushed back into the wall for final faceplate mounting.

3.4 Wiring Setra Lite

The back of Setra Lite has a 3-pin terminal block used to connect power and analog pressure
output (if needed).
3.4.1 Power
The power connection for Setra Lite uses the 2 pins on the right when looking at the rear of the
unit. Connect the 24 VDC (+/- 10%) or 24 VAC (18-32 VDC operational), 50-60 Hz lines to the
terminals marked above typically black (B) and red (R) wire.
3.4.2 Analog output
+
0-5V
0-10V
If using the Analog Output (AO) for voltage output, connect to the terminals as labeled on the
top diagram. If using the AO for mA output, connect to the terminals shown in the diagram
directly above. A 250 Ohm resistor is included for this output type in the event you need to
convert to volts (1-5V). The AO generates a 0-5 VDC, 0-10 VDC, or 4-20 mA output signal, as
configured.
–
– +
B R
7
BMS
4-20mA