Carrier RTU Open v3 - Page 28

Installing the RTU Open
RTU Open v3 CARRIER CORPORATION ©2019
Installation and Start-up Guide All rights reserved
24
To wire, power, and mount the Wireless Adapter
NOTES
• The Wireless Adapter requires a 24 Vac power supply. It is not powered by the Rnet.
• If the Wireless Adapter will be:
○ Daisy-chained on the Rnet with ZS sensors, an Equipment Touch, or TruVu™ ET Displayuse the standard
4-conductor Rnet wiring.
○ The only device on the Rnet, you can use a 3-conductor cable instead of the standard 4-conductor Rnet
cable.
1 Turn off the power to the controller that the Wireless Adapter will be wired to.
2 Partially cut, then bend and pull off the outer jacket of the Rnet cable(s). Do not nick the inner insulation.
I
n
n
e
r i
n
s
u
l
a
t
i
o
n
Outer jacket
F
o
il
s
h
i
e
l
d
.25 in.
(.6 cm)
Shield wire
3 Strip about 0.25 inch (0.6 cm) of the inner insulation from each wire.
4 Wire the
Rnet +
,
Rnet -
, and
Gnd
terminals on the controller's
Rnet
port to the terminals of the same name on
the Wireless Adapter's Rnet connector.
NOTE
If using shielded wire, connect the shield wire and the ground wire to the
Gnd
terminal.
5 Wire the 24 Vac external power supply to the Wireless Adapter's power connector.
6 Mount the Wireless Adapter by inserting 2 screws through the mounting tabs on each end of the Wireless
Adapter.
7 Apply power to the external power supply.
8 Verify that the LED on top of the Wireless Adapter is blinking. See "LED" below.
9 Turn on the controller's power.