Guidelines - Trane Symbio 210 Installation, Operation And Maintenance Manual

Proper Field Wiring and Grounding Required!
Failure to follow code could result in death or serious injury.
All field wiring MUST be performed by qualified personnel. Improperly installed and grounded
field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST
follow requirements for field wiring installation and grounding as described in NEC and your
local/state/national electrical codes.
Use Copper Conductors Only!
Failure to use copper conductors could result in equipment damage as the equipment was not
designed or qualified to accept other types of conductors.

Guidelines

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BAS-SVX091A-EN
Use 18 AWG copper wire (recommended) for power and connect to terminals XFRM 24 Vac and .
Use U.L. listed, Class 2 power transformer, 20.4 to 27.6 Vac (24 Vac nominal).
Size the transformer to provide adequate power to the Symbio 500 controller (24 VA maximum) and
outputs (maximum 12 VA for each binary output).
Important: A dedicated 24 Vac, Class 2 transformer is recommended to power the Tracer Symbio
500 controller. When powering multiple controllers from one transformer, polarity must
be maintained. Terminal 24 Vac is designated positive (+) and terminal
negative (-) to the unit casing ground. It is important to include power consumption in
the calculations.
The power consumption for cooling-only Series F Models (VariTrac™ and VariTrane™) is up to 28
VA. Refer to the table below for information about calculating actual VA requirements.
WARNING
NOTICE
Wiring Installation
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