Setra FLEX Quick Start Guide

TM

Quickstart Guide

1.Intended Use

Thank you for purchasing the Setra FLEX, the industry’s most advanced and flexible room environmental monitor.

Setra FLEX is designed for indoor use only to monitor critical environments by providing differential pressure indication and additional

parameters such as temperature, relative humidity, air changes per hour, and user-dened information. Typically this is between a monitored

room and a reference space such as a corridor or ante room. The unit also provides monitoring, control, alarm, and communications

functions.

Typical Applications:

1. Hospitals – patient isolation and protection rooms, operating suites, intensive care and emergency rooms.

2. Pharmaceutical, semiconductor, precision manufacturing and clean rooms

3. Laboratories – medical research, BSL (bio safety labs), radiation, vivarium, toxic metals and chemicals.

Included in the box

a) FLEX unit

b) FLEX unit mounting screws

c) Tubing

d) Room pressure snubber (RPS, if ordered)

and mounting screws

e) Electrical connector kit

a

d

Quantity of box contents may vary.

b

e

c

(photos not to scale)

Parts required and to be supplied by installer

To mount and install properly, the following components are required.

NOT INCLUDED and required for each FLEX unit:

• Triple Gang Double Deep Metal Electrical Box, RACO 697 or Appleton M3-350 or equivalent: 1
(a single-deep box may be used if no on-board pressure sensor was ordered)

• Green grounding screw: 1

• Power and signal wiring, as needed

• ¼” pressure tubing to run from the room(s) to the FLEX unit

• Transformer, 24 VAC

• Door Switch SPDT or SPST, N.O., as needed

• Remote Pressure Transducers, as needed

• Remote Annunciators, as needed

Setra Systems, Inc.

159 Swanson Road, Boxborough, MA 01719

800.257.3872 • www.setra.com

B+

GND

+24V

L1

L2

+24V

AI

VDC

COM

SERIAL

(PROPRIETARY)

+24V

UI1

COM

+24V

UI2

COM

UI3

COM

B

A

Z

Y

2. Wiring

Inputs & Outputs

Universal inputs (3)

Analog input (1)

Analog output (1)

Relay output (1)

Wire

0-5 VDC, 0-10 VDC, or 4-20 mA input signal*

Congurable for either Analog or Digital signals. Use

external sensors for pressure, temperature, humidity, or

any suitable application. Use as digital input for door, HVAC

Dedicated for use as input for either on-board pressure

0-5 VDC, 0-10 VDC, or 4-20 mA output signal. Use as PI

control loop to modulate reheat valves or other analog

driven devices, pressure output signal, or mirror an input

annunciator or other NO/NC applications. Contact rating

Stranded shielded twisted pair, 16-24 AWG .14-1.5 mm2

lter DP, or duct static DP pressure switch.

transducer, or general AI input. Used only when no

signal. Can be assigned to any room parameter.

24 VDC SPDT NO/NC Relay. Use as remote alarm

transducer is purchased on unit.

2.0A @ 30 VDC

cross sectional area

Expansion I/O module

*Installer provided 250Ω resistor required for 4-20mA signal

8 Universal Inputs, 4 Analog Outputs, 4 Relay Outputs

3. Rough-In

• Ensure rough-in box is ready to receive the RPS

a) Setra RPS Reference Pressure Side

b) 1-Gang Electric Box

c) Setra RPS Room Pressure Side

d) Setra FLEX Unit (Display hinges down during installation then

snaps in place when mounting is complete)

e) Setra FLEX Unit (may be mounted inside or outside room)

f) Wall cavity

g) Electrical Box (3-Gang double-deep if using on-board sensor,

single deep if no on-board sensor)

• Ensure rough-in box is ready to receive the FLEX unit

b

a

e

c

g

d

f

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4. Installation

• Make the nal connections by pushing the removable

connectors and wires into the back of the FLEX unit. If

connecting BACnet/IP, insert the RJ-45 cable into the Ethernet

port. If connecting pressure tubing, align HIGH and LOW ports

to their appropriate pressure sensor connections with anti-

kink tubing and secure in place.

• Slide the FLEX unit back into the wall, taking care to not crimp

tubing or damage wires.

• Secure the FLEX base unit into the electrical box with the four

(4) mounting screws provided. Allow the FLEX display to hang

below the mounting box, taking care so that the display does

not get damaged by tools.

• BACnet MS/TP hardware is implemented as isolated RS485.

Wire to Connector COMM, labeled BACNET. Connect TX line

to B (+), RX to A (-) and ground wires to GND. Connect shields

together with wire nut. Hardware conguration is done using a

three position dip switch located in the upper center section of

the rear PCB. Use a small flat blade screwdriver or pen to push

the switch to the right to turn the function on, or to the left to

turn the function off. If the unit will be at the end of the line,

the terminating resistor can be enabled by pushing position

1 to on.

© Setra Systems, Inc. All Rights Reserved. The Setra Systems name and logo are registered trademarks of Setra Systems, Inc.