Mitsubishi SRK19CNS-S, Technical Manual

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'14•SRK-T-164
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Safety precautions
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CAUTION
Carry out the electrical work for ground lead with care.
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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 of correct capacity. Circuit breaker •
should be the one that disconnect all poles under over current.
Using the incorrect one could cause the system failure and fi re.
Install isolator or disconnect switch on the power supply wiring
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in accordance with the local codes and regulations.
The isolator should be locked in OFF state in accordance with
EN60204-1.
Be sure to install indoor unit properly according to the
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instruction manual in order to run off the drainage smoothly.
Improper installation of indoor unit can cause dropping water into the
room and damaging personal property.
Install the drainage pipe to run off drainage securely according
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to the installation manual.
Incorrect installation of the drainage pipe can cause dropping water
into the room and damaging personal property.
Be sure to install the drainage pipe with descending slope of
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1/100 or more, and not to make traps and air-bleedings.
Check if the drainage runs off securely during commissioning and
ensure the space for inspection and maintenance.
After maintenance, all wiring, wiring ties and the like, should
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be returned to their original state and wiring route, and the
necessary clearance from all metal parts should be secured.
Secure a space for installation, inspection and maintenance
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specifi ed in the manual.
Insuffi cient space can result in accident such as personal injury due
to falling from the installation place.
Take care when carrying the unit by hand. •
If the unit weights more than 20kg, it must be carried by two or more
persons. Do not carry by the plastic straps, always use the carry
handle when carrying the unit by hand. Use gloves to minimize the
risk of cuts by the aluminum fi ns.
Dispose of any packing materials correctly.
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Any remaining packing materials can cause personal injury as it contains
nails and wood. And to avoid danger of suffocation, be sure to keep the
plastic wrapper away from children and to dispose after tear it up.
For installation work, be careful not to get injured with the heat
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exchanger, piping fl are portion or screws etc.
Be sure to insulate the refrigerant pipes so as not to condense
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the ambient air moisture on them.
Insuffi cient insulation can cause condensation, which can lead to
moisture damage on the ceiling, fl oor, furniture and any other valuables.
When perform the air conditioner operation (cooling or drying
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operation) in which ventilator is installed in the room. In this case, using
the air conditioner in parallel with the ventilator, there is the possibility
that drain water may backfl ow in accordance with the room lapse into
the negative pressure status. Therefore, set up the opening port such
as incorporate the air into the room that may appropriate to ventilation
(For example; Open the door a little). In addition, just as above, so set
up the opening port if the room lapse into negative pressure status due
to register of the wind for the high rise apartment etc.
Be sure to perform air tightness test by pressurizing with
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nitrogen gas after completed refrigerant piping work.
If the density of refrigerant exceeds the limit in the event of
refrigerant leakage in the small room, lack of oxygen can occur,
which can cause serious accidents.
Do not install the unit in the locations listed below.
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Locations where carbon fi ber, metal powder or any powder is fl oating.
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Locations where any substances that can affect the unit such as •
sulphide gas, chloride gas, acid and alkaline can occur.
Vehicles and ships.
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Locations where cosmetic or special sprays are often used.
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Locations with direct exposure of oil mist and steam such as
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kitchen and machine plant.
Locations where any machines which generate high frequency •
harmonics are used.
Locations with salty atmospheres such as coastlines.
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Locations with heavy snow (If installed, be sure to provide base
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fl ame and snow hood mentioned in the manual).
Locations where the unit is exposed to chimney smoke. •
Locations at high altitude (more than 1000m high). •
Locations with ammonic atmospheres.
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Locations where heat radiation from other heat source can affect
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the unit.
Locations without good air circulation.
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Locations with any obstacles which can prevent inlet and outlet air •
of the unit.
Locations where short circuit of air can occur (in case of multiple
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units installation).
Locations where strong air blows against the air outlet of outdoor unit.
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Locations where something located above the unit could fall.
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It can cause remarkable decrease in performance, corrosion and
damage of components, malfunction and fi re.
Do not install the indoor unit in the locations listed below (Be
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sure to install the indoor unit according to the installation manual
for each model because each indoor unit has each limitation).
Locations with any obstacles which can prevent inlet and outlet air
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of the unit.
Locations where vibration can be amplifi ed due to insuffi cient •
strength of structure.
Locations where the infrared receiver is exposed to the direct
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sunlight or the strong light beam (in case of the infrared
specifi cation unit).
Locations where an equipment affected by high harmonics is placed •
(TV set or radio receiver is placed within 1m).
Locations where drainage cannot run off safely.
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It can affect performance or function and etc.
Do not install the outdoor unit in the locations listed below.
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Locations where discharged hot air or operating sound of the •
outdoor unit can bother neighborhood.
Locations where outlet air of the outdoor unit blows directly to
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plants. The outlet air can affect adversely to the plant etc.
Locations where vibration can be amplifi ed and transmitted due to
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insuffi cient strength of structure.
Locations where vibration and operation sound generated by the outdoor •
unit can affect seriously (on the wall or at the place near bed room).
Locations where an equipment affected by high harmonics is placed
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(TV set or radio receiver is placed within 1m).
Locations where drainage cannot run off safely.
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It can affect surrounding environment and cause a claim.
Do not install the unit where corrosive gas (such as sulfurous
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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.
Do not install the unit near the location where leakage of
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combustible gases can occur.
If leaked gases accumulate around the unit, it can cause fi re.
Do not use the indoor unit at the place where water splashes
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may occur such as in laundries.
Since the indoor unit is not waterproof, it can cause electric shocks
and fi re.
Do not install nor use the system close to the equipment that
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generates electromagnetic fi elds 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 affect medical equipment and telecommunication
equipment, and obstruct its function or cause jamming.
Do not place any variables which will be damaged by getting
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wet under the indoor unit.
When the relative humidity is higher than 80% or drainage pipe is
clogged, condensation or drainage water can drop and it can cause
the damage of valuables.
Do not install the remote control at the direct sunlight.
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It can cause malfunction or deformation of the remote control.
Do not use the unit for special purposes such as storing foods,
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cooling precision instruments and preservation of animals,
plants or art.
It can cause the damage of the items.
Do not install the outdoor unit in a location where insects and
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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 fl ame for outdoor unit which is corroded or
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damaged due to long periods of operation.
Using an old and damage base fl ame can cause the unit falling down
and cause personal injury.
Do not use any materials other than a fuse with the correct
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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 touch any buttons with wet hands.
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It can cause electric shocks.
Do not touch any refrigerant pipes with your hands when the
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system is in operation.
During operation the refrigerant pipes become extremely hot or
extremely cold depending the operating condition, and it can cause
burn injury or frost injury.
Do not touch the suction or aluminum fi n on the outdoor unit.
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This may cause injury.
Do not put anything on the outdoor unit and operating unit.
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This may cause damage the objects or injury due to falling to the
object.
Do not use the unit for special purposes such as storing foods,
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cooling precision instruments and preservation of animals,
plants or art.
Do not clean up the unit with water.
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RMA012A076A_En.indb 29 22-Jan-14 09:00:39