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