General
ZL units are single package air conditioners
with optional gas heating designed for outdoor
installation on a rooftop or slab and for non-
residential use.
These 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.
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.
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.
WARNING
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.
Before performing service or maintenance
operations on unit, turn off 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.
Gauge 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.
Installation Manual ZL Series 7.5- 12.5 Ton 60 Hertz R-410A
Johnson Controls Ducted Systems
CAUTION
WARNING
CAUTION
5
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