aci BACnet Outside Series Installation & Operation Instructions

BACnet OUTSIDE SERIES
Installation & Operation Instructions

GENERAL INFORMATION

The BACnet Outside Series sensor is designed for use with
electronic controllers in commercial heating and cooling
building management systems. The ACI BACnet Immersion
Series sensor can be ordered to monitor temperature, RH,
or temp/RH of outside environments. It uses BACnet MS/TP
for physical connection to a BAS or controller, has dip switch-
es to set addresses and baud rate, and has on board
end-of-line termination. There is no analog output.

WIRING INSTRUCTIONS

The BACnet Outside Series temperature sensor has a
depluggable terminal block located on the front of the
PCB. For ease of wiring, we recommend removing the
block, wiring, and reattaching
mounting. 16 to 22 AWG two conductor shielded
cable is recommended for powering the sensors.
ACI recommends using Belden 3105 or compatible
cable for RS-485 communication wiring. This wire has
120 ohm input impendence. The terminal blocks allow
for (1) or (2) wires to be connected in each position for
daisy chaining. Daisy chain the RS-485 wiring and do
not use "Star" or "T" wiring.
Avoid running communication wires next to AC line
voltage wires. These can be sources of noise that can
a ect signal quality.

PRECAUTIONS

•
DO NOT RUN THE WIRING IN ANY CONDUIT WITH
LINE VOLTAGE (24/120/230 VAC).
•
Remove power before wiring. Never connect or
disconnect wiring with power applied.
•
It is recommended you use an isolated UL-listed
class 2 transformer when powering the unit with
24 VAC. Failure to wire the devices with the correct
polarity when sharing transformers may result in
damage to any device powered by the shared
transformer.
FIGURE 1: ENCLOSURE DIMENSIONS
EURO (-EH) ENCLOSURE
before before
PROBE 4.70": TEMP. ONLY
(53.72 mm)
PROBE 3.00": RH and RH/TEMP.
(53.72 mm)
Page 1
4.30"
(109.22 mm)
2.12"
2.12"
3.80"
(96.56 mm)
1.90"
(48.28 mm)
4.70"
(119.46 mm)
3.00"
(76.20 mm)
Version 1.0
I0000806