Setra Systems Flex User Manual

Setra FLEX Operating Instructions
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Phone: (800) 257-3872 | Fax: (978) 264-0292 | www.setra.com
1.3 BACnet Networking
FLEX communicates on BACnet networks, an ASHRAE/
ANSI standard building automation protocol. FLEX
supports both BACnet MS/TP and BACnet/IP, allowing
either protocol to be eld-selected for installation.
Connection to the network is then achieved using either
3-wire RS-485 connector or the RJ-45 Ethernet jack on
the rear of the FLEX housing.
FLEX contains approximately 470 BACnet objects with
read/write properties. Nearly all functionality that can be
setorconguredusingtheFLEXtouch-screencan also
be achieved by reading or writing BACnet objects over the
network.Exceptionsincludepasswordchanges,rmware
upgrades, and restore to factory defaults.
For more information on BACnet, refer to Section 4 –
BACnet Integration.
2.0 Rough-in Installation
For FLEX to be installed correctly, the rough-in phase
of the project must be completed properly. This section
will outline the specic considerations the General
Contractormustpayattentionto sothatthe nalwiring
and commissioning will go smoothly.
During rough-in installation there are several options for
installation, depending on whether FLEX was ordered with
on-board or external pressure transducers (or no pressure
sensors at all). Field wiring will be the same, regardless of
pressure sensor presence or location.
2.1 Required Parts to be Supplied by the
Installer
The following is a list of parts required and supplied by the
installer for Setra FLEX RM or FLEX RC:
• Triple-gang electrical box (typically called a “masonry”
box) available from most electrical supply houses
• Single-deep metal box – used only if FLEX has no on-
board pressure sensor
• Garvin TB-325, Madison MSB3G, or equivalent
• Double-deep metal box – used with FLEX ordered with
on-board pressure sensor
• Garvin TB-335-G, RACO 697, Appleton M3-350, or
equivalent
• Power (18 AWG recommended) and signal wire (22 AWG
recommended), as needed.
• 0.25” (6 mm) O.D. flame retardant polyethylene control
tubing (such as CPChem UL 1820) to run from the
room(s) Pressure Pickup Ports to the FLEX monitor
or external sensors. Maximum 250 feet (76.2 meters)
length.
• Pressure tubing T-connectors
• EMT conduit (if required by local code)
• 24 VAC transformer, capacity VA rated for number of
FLEX units powered
• 250 ohm resistors, if wiring inputs for 4-20 mA current
loops
• Door switch SPDT or SPST normally-open, as required
• Remote pressure transducers, Setra Model 264 or 267,
as needed
• Single-gang electrical box, one per Pressure Pickup Port
2.2 Parts Included with Your Order
The following parts are included with your order:
• Setra FLEX main unit
• On-boardpressuretransducer(ifon-boardspeciedon
order)
• Externalpressuretransducers (if external specied on
order)
• Integral FLEX faceplate
• Pressure Pickup Ports, quantity specied in original
order
• 0.25”O.D.nalconnectiontubingwithintegratedsprings
and attached brass barbed couplings, quantity 2
• Mounting screws, 6-32 x 1/2 Phillips head, quantity 5
• Mating electrical connectors, Phoenix Contact MC plug
kit adapting I/O screw terminals to FLEX unit.

Setra Systems Flex Specifications

General

Brand	Setra Systems
Model	Flex
Category	Control Unit
Language	English