York DWCPXY, Owner'S Manual

Page: 6 / 24

After installation work for the system has been completed, explain the
“Safety Precautions,” use, and maintenance of the unit to the customer
according to the information in all manuals that accompanied the system.
All manuals and warranty information must be given to the user or left
near the Indoor Unit.
ELECTRICAL PRECAUTIONS
Take the following precautions to reduce the risk
of electric shock, fire or explosion resulting in
serious injury or death:

Only use electrical protection equipment and tools suited for this
installation.

Insulate the wired zone controller against moisture and temperature
extremes.

Use specified cables between units and controller.

The polarity of the input terminals is important, so be sure to match the
polarity when using contacts that have polarity.

Highly dangerous electrical voltages may be used in this system.
Carefully refer to the wiring diagram and these instructions when
wiring. Improper connections and inadequate grounding can cause
serious injury or death.

Before installing the controller or remote devices, ensure that the
indoor and outdoor unit operation has been stopped. Further, be sure
to wait at least five minutes before turning off the main power switch to
the indoor or outdoor units. Otherwise, water leakage or electrical
breakdown may result.

Do not open the service cover or access panel to the indoor or outdoor
units without turning OFF the main power supply. Before connecting or
servicing controller or cables to indoor or outdoor units, open and tag
all disconnect switches. Never assume electrical power is
disconnected. Check with meter and equipment.

Use an exclusive power supply at the controller
’s rated voltage.

Be sure to install circuit breakers (ground fault interrupter, isolating
switch, molded case circuit breaker, and so forth) with the specified
capacity. Ensure that the wiring terminals are tightened securely to
recommended torque specifications.

This equipment can be installed with a Ground Fault Circuit Breaker
(GFCI), which is a recognized measure for added protection to a
properly grounded unit. Install appropriate sized breakers / fuses /
overcurrent protection switches, and wiring in accordance with local,
state and NEC codes and requirements. The equipment installer is
responsible for understanding and abiding by applicable codes and
requirements.
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