Setra Flex User Manual
TM
Hot-wire Replacement Kit
Quickstart Guide
1.0 Intended Use
Thank you for purchasing the Setra FLEXTM Hot-wire Replacement Kit, including the industry’s most advanced and flexible room
environmental monitor.
Setra FLEXTM 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-dened 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.
The Setra FLEX
technology. The kit includes:
• The award-winning Setra FLEXTM Environmental Monitor
• An adapter frame that ts over the existing wall box
• Setra’s no-maintenance transducer sensor
• A housing kit that attaches to the existing thru-the-wall sensor
Included in the box
a) Setra FLEXTM unit
b) Setra FLEXTM unit mounting screws
c) Setra FLEXTM adapter box
d) Adapter box mounting screws
e) Pressure sensing hub
f) Room pressure snubber hub
g) Hub fasteners
h) Electrical connectors
Quantity of box contents may vary.
TM
Hot-wire Replacement Kit includes everything required for upgrading obsolete, high maintenance room pressure monitor
a)
b)
d)
c)
e)
g)
Setra Systems, Inc.
159 Swanson Road, Boxborough, MA 01719
800.257.3872 • www.setra.com
Direct
Wall
f)
h)
(images not to scale)
Junction
Box
2.0 Remove existing room pressure monitor and sensor
• Refer to diagram above.
• Shut off power to existing monitor & sensor.
• Take off the removable connector.
• Remove existing room pressure monitor from the wall, and
disconnect wires. Set the monitor aside.
• Remove monitor’s wall plate from the wall and set aside.
Phone: (800) 257-3872 | Fax: (978) 264-0292 | www.setra.com
2
2.0 Remove existing room pressure monitor and sensor (continued)
• Using a step ladder and small Phillips screwdriver, remove the
hot-wire pressure sensor cover from the hallway side and set
aside (sensor cover should pull straight out with some force).
• Move ladder to the other sensor housing cover inside doorway
and remove hub cover.
• No NOT remove the wall plate from wall.
• Do NOT remove wires from the sensor wall plate connector at
this time.
• Do NOT remove the sensor wall plate, as it will be used for
mounting the new sensor hub.
© Setra Systems, Inc. All Rights Reserved. The Setra Systems name and logo are registered trademarks of Setra Systems, Inc.
3
3.0 Installing the sensor hub
• The sensor hub comes pre-assembled similar to the existing
hot wire kit. On the hallway side, install the sensor hub as
shown. A two wire harness is included.
• RED = positive (+); BLACK = negative or common (-)
• At this time, you can take advantage of the existing electrical
connector found on the faceplate and connect the two output
wires directly, sharing the same positions as the existing
output wires, leading down to the old monitor.
• Alternatively, you can remove this existing electrical connector
terminal from the faceplate and use either the crimp-style butt
connectors or wire nuts provided in the kit. (Take note of the
wire colors you are selecting from the wall for easy connecting
down below at the new monitor)
• After electrical connections are complete, uncoil the length of
tubing connected to the hub and push this through the existing
wall tube into the room (you will be connecting this tubing later)
Phone: (800) 257-3872 | Fax: (978) 264-0292 | www.setra.com
4
• Remove and discard terminal block.
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