Input wiring specifications – Carrier RTU OPEN 11-808-427-01 User Manual
Page 19
RTU Open
13
Channel
Number
Type
Signal
Function
Part Number
Wire/Terminal
Numbers
Alternate
Terminals
BO - 2
BO
N/A - Relay
Heat 2 (W2) Output
N/A
J1
- 5
N/A
BO - 3
BO
N/A - Relay
Heat 1 (W1) Output
N/A
J1
- 6
N/A
BO - 4
BO
N/A - Relay
Cool 2 (Y2) Output
N/A
J1
- 7
N/A
BO - 5
BO
N/A - Relay
Cool 1 (Y1) Output
N/A
J1
- 8
N/A
BO - 6
BO
N/A - Relay
Humidi-MiZer™
N/A
J11
- 7 & 8
N/A
BO - 7
BO
N/A - Relay
Reversing Valve
N/A
J11
- 4 & 6
N/A
BO - 8
BO
N/A - Relay
Power Exhaust
N/A
J11
- 1 & 3
N/A
Legend
AI
- Analog Input
AO
- Analog Output
BI
- Digital Input
BO
- Digital Output
*
Safety Chain Feedback
- 24 Vac required at this wire to provide
Run Enabled
status. Provide a jumper from
J1
- 1 to
J1
- 9 if no
safeties are utilized. See To wire inputs and outputs (page 14) for additional information on the RTU Open wiring harness assembly
terminations.
** Default input function
*** Parallel screw terminal at
J5
(
J5
- 1 =
J2
- 6,
J5
- 3 =
J1
- 10,
J5
- 5 =
J1
- 2) may be used in place of the associated flying leads at
the harness (Part #OPN-RTUHRN). See To wire inputs and outputs (page 14) for additional information.
Input wiring specifications
Input
Maximum length
Minimum gauge
Shielding
Thermistor
1000 feet
(305 meters)
22 AWG
Unshielded
4-20 mA
3000 feet
(914 meters)
22 AWG
Unshielded
Binary input
1000 feet
(305 meters)
22 AWG
Unshielded
SPT (RNET)
500 feet
(152 meters)
22 AWG
4 conductor
Unshielded