RLC-SVX09Q-EN
53
The outdoor air sensor probe must be located and installed
at a location to sense the ambient air temperature, while
avoiding direct sunlight.
Important: Use only the probe provided, as it is calibrated
at the factory for accuracy.
A twisted pair sheathed cable shall be run and connected
between the outdoor temperature sensor and its LLID
module in the chiller control panel. The sensor’s circuit is a
class II power limited analog circuit and therefore the wire
should not be run in close proximity to any power or line
voltage wiring. Splices must be watertight and the wire run
should be physically supported at equal intervals with
consideration for safety and reliability/durability with wire
ties or similar to meet local codes.
Building Automation Systems
BACnet
®
Building Automation Control
Network
The BACnet control network for Symbio™ 800 expands
communications from the unit controls network to the
Tracer
®
Ensemble™ or Tracer
®
SC+ building automation
system (BAS) or third party building automation system.
Utilizing BACnet, the BAS allows external setpoint and
configuration adjustment and monitoring of status and
diagnostics. The Symbio 800 utilizes the BACnet defined
TP protocol as defined in ASHRAE standard 135-2004.
This controller works in standalone mode, with Tracer
Ensemble, Tracer SC+ or when connected to a third party
building automation system that supports BACnet.
Modbus
®
Automation Control Network
Allows the user to easily interface with Modbus RTU
communication protocol via a single twisted pair wiring or
Modbus TCP over Ethernet from the Symbio™ 800
controller to a factory installed device.
LonTalk
®
Building Automation Systems
The LonTalk communication protocol for the Symbio™ 800
controller expands communications from the unit controls
network to a Tracer
®
Ensemble™ building automation
system or third party building automation system. Utilizing
LonTalk, the BAS allows external setpoint and
configuration adjustment and monitoring of status and
diagnostics. The Symbio 800 utilizes an FTT-10A free
topology transceiver, which supports non-polarity sensitive,
free topology wiring—which in turn allows the system
installer to utilize star, bus, and loop architectures. This
controller works in standalone mode, peer-to-peer with one
or more other units, or when connected to a Tracer
Ensemble, Tracer SC+, or a third party building automation
system that supports LonTalk.
Note: An optional module is required for Symbio 800
support of LonTalk. See Tracer
®
USB LonTalk
Module Installation Instructions (BAS-SVN138*-EN).
Installation - Electrical
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