Setra Systems Lite Troubleshooting guide
Installation & Operating Guide
Setra Systems, Inc.
159 Swanson Road, Boxborough, MA 01719
800.257.3872 • www.setra.com
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© 2019 Setra Systems, Inc.
The material in this document is for information purposes only and is subject to change
without notice. Setra Systems assumes no responsibility for any errors or for consequential
damages that may result from the use or misrepresentation of any of the material in this
publication.
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Table of Contents
1.0 Introduction.................................................................................................................... 4
1.1 Intended use .............................................................................................................. 4
1.2 Display and LED light ring......................................................................................... 4
2.0 Rough-in installation .................................................................................................... 5
2.1 Required parts to be supplied by the installer ......................................................... 5
2.2 Parts included with your order ................................................................................. 5
2.3 Unboxing the unit ...................................................................................................... 5
3.0 Installation overview...................................................................................................... 6
3.1 Prepare wall for mounting ........................................................................................ 6
3.2 Install pressure pickup port...................................................................................... 6
3.3 Plumbing.................................................................................................................... 6
3.4 Wiring Setra Lite ........................................................................................................ 7
3.5 Completing the installation....................................................................................... 8
4.0 Servicing Setra Lite........................................................................................................ 9
............................................................................................................. 9
4.2 Removal ...................................................................................................................10
5.0 Operation......................................................................................................................11
............................................. 11
............................................................................................... 12
6.0 Returns .........................................................................................................................17
7.0 Warranty and limitation of liability.............................................................................. 17
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1.0 Introduction
The Setra Lite provides a simple, cost-effective, and accurate way to measure and display
room differential pressure in areas today that require manual verication. For local staff
managing area, Setra Lite has a light ring that is green or red, showing a clear indication of
room conditions. For the facility manager, using the Lite means the frequency of preventative
maintenance walk-by inspections can be reduced because Setra Lite is monitoring the space.
Setra Lite has many features found only in larger, more complex room pressure monitors.
These include a bright light ring that can be seen at an angle or down a hallway, a digital
display of the pressure value that is always-on or momentary an alarm delay for door entry,
and POS or NEG room mode. The Setra Lite sensor has Setra’s accuracy and reliability that
you can trust.
Setra Lite is about the size of a standard light switch and just as simple to install. It ts in
a single-gang US electrical box, international 86-box or international round back-box, and
is powered by 24VAC or 24VDC. The reference side pressure pickup is integral with the Lite
faceplate. An analog output provides the building management system with the pressure
signal for any additional trending or alarming needed.
The Setra Lite also integrates seamlessly with the Setra Flex environmental monitor. Mount
Setra Lite at additional doors that enter the space and use an on-screen badge to display its
value.
1.1 Intended use
Setra Lite is designed to sense and visually indicate the pressurization status of critical
environments, including cleanrooms and sensitive hospital areas (sterile bronchoscopy
rooms, and other USP 800 compliant pressurized spaces). Setra Lite is design provide an
intuitive visual indicator of the status of the room and can also be tied into other devices via
analog output.
1.2 Display and LED light ring
Setra Lite features and LED light ring that will glow red if room pressurization violates the
congured alarm threshold. The design of the light ring allows the room status to be visible
from a distance, even from down a hallway. With a simple press of the front lens of the unit,
the LCD displays the current differential pressure. Conguration of the unit can be performed
on the device via buttons located behind the removable front lens. The unit can be put into and
taken out of “Standby” mode by pressing the front lens 3 times in quick succession.
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2.0 Rough-in installation
For Setra Lite to be installed correctly, the rough-in phase of the project must be completed
properly. This section will outline the specic considerations the General Contractor must pay
attention to so that the nal wiring and commissioning will go smoothly.
2.1 Intended use
The following is a list of parts required and supplied by installer for Setra Lite:
1. Power (18-22 AWG recommended) and signal wire
2. 1/8 in. ID silicon tubing to run from the room(s) Pressure Pickup Ports to the Setra Lite
monitor or external sensors.
3. 24 VAC or VDC transformer, capacity rated for number of Setra Lite units powered
4. Single-gang electrical box, if opting not to install directly into wall
5. Single-gang electrical box, one per Pressure Pickup Port, if opting not to install directly
into wall
2.2 Parts included with your order
The following parts are included with your order:
1. Setra Lite main unit
2. Pressure Pickup Port (located in master shipping box)
3. Mounting hardware
4. Elbow connectors, if needed
5. 250 ohm resistor, if wiring inputs for 4-20 mA current loops
2.3 Unboxing the unit
When rst opening the Setra Lite box, the faceplate and lens are in a protective bag on top. Set
aside these parts for nal installation.
Located underneath the faceplate and lens is the main sensor body of the Setra Lite.
Attachment hardware is located in the side slot of the packing foam inside the Setra Lite box.
A Pressure Pickup Port is separately packaged and included in the master shipping box that
contained the Setra Lite.
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3.0 Installation overview
Each Setra Lite unit comes compete per order specications to provide room differential
pressure sensing and an intuitive visual indicator of room pressurization status.
3.1 Prepare wall for mounting
3.2 Install Pressure Pickup Port (RPS)
1. Cut hole in wall for Setra Lite or install 1-gang electrical box
2. Install 1-gang electrical box for each Pressure Pickup Port (RPS), either horizontal ceiling
mounted or vertically mounted high on a wall surface
3. Ensure electrical boxes are level and flush to the nished wall surface
1. Install room-side Pressure Pickup Port, which transmits pressure to be measured by
Setra Lite.
Note: Reference-side pressure pickup is integrated into the main body of Setra Lite -
no additional Pressure Pickup Port is required for reference side.
2. Run tubing to Setra Lite electrical box, being careful not to crimp tubing in conduit or
within walls
3. Run all wiring to the Setra Lite electrical box.
3.3 Plumbing
Typically, a Pressure Pickup Port (RPS) is installed in the primary monitored room and Setra
Lite is installed in the reference area (typically a hallway). Installing a single gang electrical box
inside the room, typically high on the wall or flush-mounted to the ceiling is appropriate for the
Pressure Pickup Port. 1/8” ID soft platinum-cured silicon tubing is typically used to bring the
pressure signal from the Pressure Pickup Port to the pressure tting on the back of Setra Lite.
Note: Caution should be taken to locate the Pressure Pickup Port and Setra Lite at least
six (6) feet from air turbulence that may originate from air supply diffusers, slot diffusers,
mobile equipment cooling fans, or other devices that may exhaust air in the direction
of the ports. Air velocity blowing directly on these ports can cause inaccurate pressure
measurement.
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–
B
+
R
+
0-5V
–
0-10V
4-20mA
BMS
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 nal installation of the Pressure Pickup Port, careful observation should be made of
how the tubing gets pushed back into the wall for nal 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
3.4.2 Analog output
Attach pressure tubing as follows for nal 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” eld 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.
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.
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
congured.
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3.5 Completing the installation
1. Connect pressure tubing from the Pressure Pickup Port to the port on the back of Setra
Lite.
2. Connect wiring for power and analog output (if required)
3. As you push the Setra Lite unit into the electrical box, push the tubing into the conduit tube
or into the wall cavity.
4. When wiring is complete, push Setra Lite into the enclosure and secure with two (2)
mounting screws.
5. When the home screen appears, Setra Lite can be congured via 3 buttons located below
the LCD display on the circuit board. Initial setup, zero, and conguration menu settings
are detailed in the following section.
Note: Setra Lite should be installed, powered and operational for 30 minutes for warmup
and acclimation for one-time pressure sensing stabilization. If necessary, after the warmup,
units can be re-zeroed. Setra Lite contains a small air valve to allow for one-touch zeroing
via the conguration menu.
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6. After conguration is completed, align and engage the bottom snaps of the faceplate and
then align and engage the top two snaps. Then, align and install the front lens to the
faceplate by inserting top snap rst, followed by the bottom snap. LEft and right snaps are
alignment only. When removing the cover lens, grasp lens left and right with forenger and
thumb and pull straight out as shown in the bottom.
4.0 Servicing Setra Lite
4.1 Conguration
Conguration of Setra Lite (including sensor zeroing) can be performed by removing the front
lens from the unit and conguration setting via the 3 buttons located below the LCD display.
To remove the front lens, grab the front lens from the left and right side edges, and pull the
lens away from the wall.
The conguration menu can be accessed by holding the LEFT button for 3 seconds.
Conguration menu settings (including one-touch zeroing) are detailed in the following
section.
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4.2 Removal
In the event Setra Lite needs to be removed for service or recalibration, rst remove the front
lens. To remove the front lends, grab the front lens from the left and right side edges, and pull
the lens away from the wall.
Next, locate the 4 snaps holding the faceplate to the unit. Carefully push on the inside lip of the
faceplate near each snap to disengage each snap one at a time.
Once the faceplate has been removed, unscrew the unit from the wall or electrical box, and
disconnect wires and pressure tubing.
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