Mitsubishi Heavy Industries HMK60, Installation Manual

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leaks, electric shocks or fi re.
Do not perform any change of protec-
tive device itself or its setup condition
The forced operation by short-circuiting protective
device of pressure switch and temperature
controller or the use of non specified component
can cause fi re or burst.
Be sure to switch off the power supply
in the event of installation, inspection
or servicing.
If the power supply is not shut off , there is a risk
of electric shocks, unit failure or personal injury
due to the unexpected start of fan.
Consult the dealer or an expert regar-
ding removal of the unit.
Incorrect installation can cause water leaks,
electric shocks or fi re.
Stop the compressor before disconnec-
ting refrigerant pipes in case of pump
down operation.
If disconnecting refrigerant pipes in state of
opening service valves before compressor
stopping, air can be sucked, which can cause burst
or personal injury due to anomalously high
pressure in the refrigerant circuit.
CAUTION
Carry out the electrical work for ground
lead with care.
Do not connect the ground lead to the gas line,
water line, lightning conductor or telephone line’s
ground lead. Incorrect grounding can cause unit
faults such as electric shocks due to short-
circuiting.
Use the circuit breaker with sufficient
breaking capacity.
If the breaker does not have sufficient breaking
capacity, it can cause the unit malfunction and
fi re.
Earth leakage breaker must be insta-
lled.
If the earth leakage breaker is not installed, it can
cause electric shocks.
Do not use any materials other than a
fuse with the correct rating in the
location where fuses are to be used.
Connecting the circuit with copper wire or other
metal thread can cause unit failure and fi re.
Do not install the unit near the location
where leakage of combustible gases
can occur.
If leaked gases accumulate around the unit, it can
cause fi re.
Do not install the unit where corrosive
gas (such as sulfurous acid gas etc.) or
combustible gas (such as thinner and
petroleum gases) can accumulate or collect,
or where volatile combustible substances
are handled.
Corrosive gas can cause corrosion of heat
exchanger, breakage of plastic parts and etc. And
combustible gas can cause fi re.
Secure a space for installation, inspec-
tion and maintenance specified in the
manual.
Insufficient space can result in accident such as
personal injury due to falling from the installation
place.
When the outdoor unit is installed on a
roof or a high place, provide permanent
ladders and handrails along the access
route and fences and handrails around the
outdoor unit.
If safety facilities are not provided, it can cause
personal injury due to falling from the installation
place.
Do not use the indoor unit at the place
where water splashes may occur.
Since the indoor unit is not waterproof, it
can cause electric shocks and fi re.
Do not install or use the system close
to the equipment that generates elec-
tromagnetic fields or high frequency
harmonics.
Equipment such as inverters, standby generators,
medical high frequency equipments and
telecommunication equipments can affect the
system, and cause malfunctions and breakdowns.
The system can also aff ect medical equipment and
telecommunication equipment, and obstruct its
function or cause jamming.
Do not install the outdoor unit in a
location where insects and small animals
can inhabit.
Insects and small animals can enter the electric
parts and cause damage or fi re. Instruct the user to
keep the surroundings clean.
Do not use the base flame for outdoor
unit which is corroded or damaged due
to long periods of operation.
Using an old and damage base flame can cause
the unit falling down and cause personal injury.
Do not install the unit in the locations
listed below.
 
Locations where carbon fi ber, metal powder or
Safety precautions