General - York ZR Series Installation Manual

5167531-YIM-J-1019

General

®
York ZR078-150 units are single package air conditioners
with optional gas heating designed for outdoor installation on a
rooftop or slab and for non-residential use. The units can be
equipped with factory or field-installed electric heaters for
heating applications.
The units are completely assembled on rigid, permanently
attached base rails. All piping, refrigerant charge, and electrical
wiring is factory installed and tested. The units require electric
power, gas supply (where applicable), and duct connections.
The electric heaters have nickel-chrome elements and use
single-point power connection.
Safety considerations
This is a safety alert symbol. When you see this symbol
on labels or in manuals, be alert to the potential for
personal injury.
This is a safety alert symbol. When you see this symbol on
labels or in manuals, be alert to the potential for personal injury.
Understand and pay particular attention the signal words
DANGER, WARNING or CAUTION.
DANGER indicates an imminently hazardous situation, which,
if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation, which,
if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation, which, if
not avoided may result in minor or moderate injury. It is also
used to alert against unsafe practices and hazards involving
only property damage.
Improper installation may create a condition where the
operation of the product could cause personal injury or
property damage. Improper installation, adjustment,
alteration, service or maintenance can cause injury or
property damage. Refer to this manual for assistance or
for additional information, consult a qualified contractor,
installer or service agency.
This product must be installed in strict compliance with
the installation instructions and any applicable local,
state and national codes including, but not limited to
building, electrical, and mechanical codes.
2
Before you perform service or maintenance operations
on the unit, turn off the main power switch to unit.
Electrical shock could cause personal injury. Improper
installation, adjustment, alteration, service or
maintenance can cause injury or property damage.
Refer to this manual. For assistance or additional
information consult a qualified installer, service agency,
or the gas supplier.
This system uses R-410A Refrigerant which operates at
higher pressures than R-22. No other refrigerant may be
used in this system. Gage sets, hoses, refrigerant
containers and recovery systems must be designed to
handle R-410A. If you are unsure, consult the equipment
manufacturer. Failure to use R-410A compatible servicing
equipment may result in property damage or injury.
If the information in this manual is not followed exactly, a
fire or explosion may result causing property damage,
personal injury or loss of life.
Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other appliance.
What to do if you smell gas
• Do not try to light any appliance.
• Do not touch any electrical switch.
• Do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a qualified
installer, service agency, or the gas supplier.
Due to system pressure, moving parts, and electrical
components, the installation and servicing of air conditioning
equipment can be hazardous. Only qualified, trained service
personnel must install, repair, or service this equipment.
Untrained personnel can perform basic maintenance functions
of cleaning coils and filters, and replacing filters.
Observe all the precautions in the literature, labels, and tags
that accompany the equipment whenever you work on air
conditioning equipment. Be sure to follow all other applicable
safety precautions and codes including ANSI Z223.1 or CSA-
B149.1- latest edition.
Wear safety glasses and work gloves. Use quenching cloth and
have a fire extinguisher available during brazing operations.
Johnson Controls Ducted Systems