Ac Power Wiring - Trane Tracer ZN511 Installation And Operation Manual

Zone controller
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Chapter 2 General wiring information
8

AC power wiring

CAUTION
Complete input/output wiring before applying power to the Tracer
ZN511 zone controller. Failure to do so may cause damage to the con-
troller or power transformer due to inadvertent connections to power
circuits.
CAUTION
Make sure that the 24 Vac transformer is properly grounded. Failure to
do so may result in damage to equipment and/or personal injury.
IMPORTANT
Do not share 24 Vac between controllers.
All wiring must comply with National Electrical Code and local codes.
The ac power connections are in the top left corner of the Tracer ZN511
zone controller (see Figure 3).
Figure 3. Connecting ac power wires to the controller
24 Vac unit
transformer
If you are providing a new transformer for power, use a UL-listed Class 2
power transformer supplying a nominal 24 Vac (19–30 Vac). The trans-
former must be sized to provide adequate power to the Tracer ZN511 zone
controller (9 VA) and output devices, including relays and valve actuators,
to a maximum of 12 VA per output utilized. The Tracer ZN511 may be
powered by an existing transformer integral to the controlled heat pump
or fan coil, provided the transformer has adequate power available and
adequate grounding is observed.
H
N
CNT-SVX06B-EN

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