Setra Systems FLEX Quick Start Manual page 2

2. Wiring
Inputs & Outputs
Configurable for either Analog or Digital signals. Use
external sensors for pressure, temperature, humidity, or
Universal inputs (3)
any suitable application. Use as digital input for door, HVAC
Dedicated for use as input for either on-board pressure
transducer, or general AI input. Used only when no
Analog input (1)
0-5 VDC, 0-10 VDC, or 4-20 mA output signal. Use as PI
control loop to modulate reheat valves or other analog
Analog output (1)
driven devices, pressure output signal, or mirror an input
annunciator or other NO/NC applications. Contact rating
Relay output (1)
Stranded shielded twisted pair, 16-24 AWG .14-1.5 mm
Wire
8 Universal Inputs, 4 Analog Outputs, 4 Relay Outputs
Expansion I/O module
*Installer provided 250Ω resistor required for 4-20mA signal
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
0-5 VDC, 0-10 VDC, or 4-20 mA input signal*
filter DP, or duct static DP pressure switch.
transducer is purchased on unit.
signal. Can be assigned to any room parameter.
24 VDC SPDT NO/NC Relay. Use as remote alarm
cross sectional area
Phone: (800) 257-3872 | Fax: (978) 264-0292 | www.setra.com
2.0A @ 30 VDC
2
e
VDC
L2
COM
L1
+24V
UI1 +24V
COM
+24V
UI2
COM
UI3
COM
B+
GND
b
a c
g
f
+24V
AI
SERIAL
(PROPRIETARY)
B
A
Z
Y
d