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Specifications subject to change without notice. IM-DHMSHA-02
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning equipment can
be hazardous due to system pressures, electrical components, and
equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should install,
start-up, and service this equipment.
Untrained personnel can perform basic maintenance functions such
as coil cleaning. All other operations should be performed only by
trained service personnel.
When working on the equipment, observe precautions in the literature
and on tags, stickers, and labels attached to the equipment.
Follow all safety codes. Wear safety glasses and work gloves. Keep
a quenching cloth and fire extinguisher nearby when brazing. Use
care in handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or
cautions included in the literature and attached to the unit. Consult
the local building codes and National Electrical Code (NEC) for
special requirements. Recognize safety information. This is the
safety-alert symbol . When you see this symbol on the unit and
in instructions or manuals, be alert to the potential for personal
injury. Understand these signal words:
DANGER
,
WARNING
,
and
CAUTION
. These words are used with the safety-alert
symbol.
DANGER
identifies the most serious hazards which will
result in severe personal injury or death.
WARNING
signifies
hazards which could result in personal injury or death.
CAUTION
is used to identify unsafe practices which may result in minor
personal injury or product and property damage.
NOTE
is used to
highlight suggestions which will result in enhanced installation,
reliability, or operation.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing, modifying, or servicing system, main electrical
disconnect switch must be in the OFF position. There may be more
than 1 disconnect switch. Lock out and tag switch with a suitable
warning label.
WARNING
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing oxygen
for leak testing or operating refrigerant
compressors. Pressurized mixtures of air
or gases containing oxygen can lead to
an explosion.
WARNING
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe in the
ground. If any section of pipe is buried, there must be a 6 in. (152 mm)
vertical rise to the valve connections on the outdoor units. If more
than the recommended length is buried, refrigerant may migrate to the
cooler buried section during extended periods of system shutdown.
This causes refrigerant slugging and could possibly damage the
compressor at start-up.
CAUTION
