Input Wiring Specifications - Carrier RTU Open v3 Installation And Startup Manual

Installing the RTU Open
Channel Type Signal
Number
AO - 2 AO 0-10 Vdc or
2-10 Vdc
BO - 1 BO N/A - Relay
BO - 2 BO N/A - Relay
BO - 3 BO N/A - Relay
BO - 4 BO N/A - Relay
BO - 5 BO N/A - Relay
BO - 6 BO N/A - Relay
BO - 7 BO N/A - Relay
BO - 8 BO N/A - Relay
Legend
AI AO
- Analog Input - Analog Output
BI BO
- Digital Input - Digital Output
Safety Chain Feedback
*
if no safeties are used. See To wire inputs and outputs (page 16) for additional information on the RTU Open wiring harness
assembly terminations.
** Default input function
***
Parallel screw terminal at
leads at the harness (Part# OPN-RTUHRN). See To wire inputs and outputs (page 16) for additional information.
**** Binary Input 9: Integrated Gas Control reports status and if the flame is present.
N.C. contact must be used as a primary safety device for approved fire shutdown operation. N.O. contact for monitoring only.
1
If a function other the default is used, do NOT connect wires from J1-x.
2

Input wiring specifications

Input
Thermistor
4-20 mA
Binary input
ZS sensors
Wireless Adapter for
wireless sensors
Equipment Touch
TruVu™ ET Display
RTU Open v3
Installation and Start-up Guide
Function
Variable Frequency Drive
Fan (G)
Heat 2 (W2) Output
Heat 1 (W1) Output
Cool 2 (Y2) Output
Cool 1 (Y1) Output
Humidi-MiZer™
Reversing Valve / High
Speed Fan / Y3
Power Exhaust
- 24 Vac required at this wire to provide
J5 J5 J2 J5 J1
( - 1 = - 6, - 3 =
Maximum length
1000 feet
(305 meters)
3000 feet
(914 meters)
1000 feet
(305 meters)
See Wiring devices to the RTU Open's Rnet port (page 22).
Part Number
Field-supplied
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Run Enabled
status. Provide a jumper from
J5 J1
- 10, - 5 = - 2) may be used in place of the associated flying
Minimum gauge
22 AWG
22 AWG
22 AWG
14
Wire and Alternate
Terminal Terminals
Numbers
J22 N/A
- 1 & 2
J1 N/A
- 4
J1 N/A
- 5
J1 N/A
- 6
J1 N/A
- 7
J1 N/A
- 8
J11 N/A
- 7 & 8
J11 N/A
- 5 & 6
J11 N/A
- 2 & 3
J1 J1
- 1 to - 9
Shielding
Unshielded
Unshielded
Unshielded
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