Mitsubishi Electric PAA-A18AA1 Manual De Operación página 6

WARNING
Electrical risks
• Have all electric work performed by an electrician properly qualified in the state where
the electric work is being performed, according to the "National Electrical Code" and
local electrical codes, "Interior Wire Regulations" and instructions given in the PAA unit
installation manual, and always use a dedicated breaker.
– If the power source capacity is inadequate or electric work is performed improperly,
electric shock and fire may result.
• Keep the electric parts away from water.
– It might result in electric shock, fire or smoke.
• Read the chapters from the "Selecting an installation site" chapter to the "Electrical
wiring" chapter of the PAA installation manual carefully before operating the equipment.
Do not operate the furnace, PAA unit or outdoor unit with the panel or guard removed.
Injury may occur if you touch the rotating fan of the furnace or outdoor unit, high-
temperature parts such as compressors and pipes, or high-voltage parts such as
terminal blocks.
• Do not splash water over the unit and do not touch the unit with wet hands.
– An electric shock may result.
• If the supply cord is damaged, it must be replaced by the manufacturer, service
personnel or licensed person.
– This may result in electric shock or fire.
WARNING
Refrigerant leak risks
• When the outdoor unit stop valve is left closed after installation/service, or when the
outdoor unit stop valve is closed due to operation stop, the volume of the liquid
refrigerant in the refrigerant piping expands due to the heating operation in the gas
furnace, causing coil or refrigerant piping to rupture.
• Should the refrigerant leak and cause the safety limit to be exceeded, hazards could
result due to lack of oxygen in the room. If odor is detected please contact a dealer,
contractor or technician regarding the appropriate measures to prevent the safety limit
from being exceeded.
– If the refrigerant gas comes into contact with a flame, poisonous gases will be
released. When odor is detected, contact a dealer, contractor or technician regarding
the appropriate measures to prevent the safety limit from being exceeded.
• Never use an open flame to detect refrigerant leaks. Use a leak test sensor or other
approved methods for leak testing.
– Explosive conditions may occur.
Specifications are subject to change without notice.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1
6 © 2022 Mitsubishi Electric US, Inc.