Application Datas - Mitsubishi Heavy Industries SRK20ZJX-S Service Manual

5. APPLICATION DATAS

5.1 Installation of outdoor unit
(1) Models SCM40ZJ-S, 45ZJ-S
• This installation manual deals with outdoor units and general installation specifications only. For indoor units, refer to page139 and 160.
• When install the unit, be sure to check whether the selection of installation place, power supply specifications, usage limitation (piping length, height differences between
indoor and outdoor units, power supply voltage and etc.) and installation spaces.
• We recommend you to read this "SAFETY PRECAUTIONS" carefully before the installation work
in order to gain full advantage of the functions of the unit and to avoid malfunction due to
mishandling.
• The precautions described below are divided into
matters with possibilities leading to serious consequences such as death or serious personal
injury due to erroneous handling are listed in the
possibilities leading to personal injury or damage of the unit due to erroneous handling including
probability leading to serious consequences in some cases are listed in
are very important precautions for safety. Be sure to observe all of them without fail.
• Be sure to confirm no anomaly on the equipment by commissioning after completed installation
and explain the operating methods as well as the maintenance methods of this equipment to
• Installation must be carried out by the qualified
installer.
If you install the system by yourself, it may cause serious
trouble such as water leaks, electric shocks, fire and
personal injury, as a result of a system malfunction.
• Install the system in full accordance with the
instruction manual.
Incorrect installation may cause bursts, personal injury,
water leaks, electric shocks and fire.
• Be sure to use only for household and residence.
If this appliance is installed in inferior environment such as
machine shop and etc., it can cause malfunction.
• Use the original accessories and the specified
components for installation.
If parts other than those prescribed by us are used, It may
cause water leaks, electric shocks, fire and personal injury.
• Install the unit in a location with good support.
Unsuitable installation locations can cause the unit to fall
and cause material damage and personal injury.
• Ensure the unit is stable when installed, so that it can
withstand earthquakes and strong winds.
Unsuitable installation locations can cause the unit to fall
and cause material damage and personal injury.
• Ventilate the working area well in the event of
refrigerant leakage during installation.
If the refrigerant comes into contact with naked flames,
poisonous gas is produced.
• Use the prescribed pipes, flare nuts and tools for
R410A.
Using existing parts (for R22 or R407C) can cause the unit
failure and serious accidents due to burst of the refrigerant
circuit.
• Ensure that no air enters in the refrigerant circuit
when the unit is installed and removed.
If air enters in the refrigerant circuit, the pressure in the
refrigerant circuit becomes too high, which can cause burst
and personal injury.
• Do not processing, splice the power cord, or share a
socket with other power plugs.
This may cause fire or electric shock due to defecting
contact, defecting insulation and over-current etc.
• 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 fire.
• Earth leakage breaker must be installed.
If the earth leakage breaker is not installed, it can cause
electric shocks.
• Install isolator or disconnect switch on the power
supply wiring in accordance with the local codes and
regulations.
• After maintenance, all wiring, wiring ties and the like,
should 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 specified in the manual.
Insufficient space can result in accident such as personal
injury due to falling from the installation place.
• Do not install the unit in the locations listed below.
• Locations where carbon fiber, metal powder or any
powder is floating.
• Locations where any substances that can affect the unit
such as sulphide gas, chloride gas, acid and alkaline can
occur.
• Vehicles and ships.
• Locations where cosmetic or special sprays are often
used.
• Locations with direct exposure of oil mist and steam such
as kitchen and machine plant.
• Locations where any machines which generate high
frequency harmonics are used.
• Locations with salty atmospheres such as coastlines.
• Locations with heavy snow (If installed, be sure to provide
SAFETY PRECAUTIONS
WARNING and CAUTION . The
WARNING and the matters with
CAUTION . These
WARNING
• Tighten the flare nut by torque wrench with specified
method.
If the flare nut were tightened with excess torque, this may
cause burst and refrigerant leakage after a long period.
• Do not open the operation valves for liquid line and
gas line until completed refrigerant piping work, air
tightness test and evacuation.
If the compressor is operated in state of opening operation
valves before completed connection of refrigerant piping
work, air can be sucked into refrigerant circuit, which can
cause bust or personal injury due to anomalously high
pressure in the refrigerant.
• The electrical installation must be carried out by the
qualified electrician in accordance with "the norm for
electrical work" and "national wiring regulation", and
the system must be connected to the dedicated
circuit.
Power supply with insufficient capacity and incorrect
function done by improper work can cause electric shocks
and fire.
• Be sure to shut off the power before starting electrical
work.
Failure to shut off the power can cause electric shocks, unit
failure or incorrect function of equipment.
• Be sure to use the cables conformed to safety
standard and cable ampacity for power distribution
work.
Unconformable cables can cause electric leak, anomalous
heat production or fire.
• This appliance must be connected to main power
supply by means of a circuit breaker or switch
(fuse:25A) with a contact separation of at least 3mm.
• Do not bundling, winding or processing for the power
cord. Or, do not deforming the power plug due to
tread it.
This may cause fire or heating.
• Do not run the unit with removed panels or
protections.
Touching rotating equipments, hot surfaces or high voltage
parts can cause personal injury due to entrapment, burn or
electric shocks.
CAUTION
• 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 fins.
• Dispose of any packing materials correctly.
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.
• Be sure to insulate the refrigerant pipes so as not to
condense the ambient air moisture on them.
Insufficient insulation can cause condensation, which can
lead to moisture damage on the ceiling, floor, furniture and
any other valuables.
base flame 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.
• Locations where heat radiation from other heat source can
affect the unit.
• Locations without good air circulation.
• 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 units installation).
• Locations where strong air blows against the air outlet of
outdoor unit.
It can cause remarkable decrease in performance, corrosion
and damage of components, malfunction and fire.
127
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the user according to the owner's manual.
• Keep the installation manual together with owner's manual at a place where any user can read
at any time. Moreover if necessary, ask to hand them to a new user.
• For installing qualified personnel, take precautions in respect to themselves by using suitable
protective clothing, groves, etc., and then perform the installation works.
• Please pay attention not to fall down the tools, etc. when installing the unit at the high position.
• If unusual noise can be heard during operation, consult the dealer.
• Symbols which appear frequently in the text have the following meaning:
Observe instructions
Strictly prohibited
with great care
• Use the prescribed cables for electrical connection,
tighten the cables securely in terminal block and
relieve the cables correctly to prevent overloading the
terminal blocks.
Loose connections or cable mountings can cause
anomalous heat production or fire.
• Arrange the wiring in the control box so that it cannot
be pushed up further into the box. Install the service
panel correctly.
Incorrect installation may result in overheating and fire.
• Be sure to fix up the service panels.
Incorrect fixing can cause electric shocks or fire due to
intrusion of dust or water.
• 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.
• Stop the compressor before disconnecting refrigerant
pipes in case of pump down operation.
If disconnecting refrigerant pipes in state of opening
operation valves before compressor stopping, air can be
sucked, which can cause burst or personal injury due to
anomalously high pressure in the refrigerant circuit
• Only use prescribed optional parts. The installation
must be carried out by the qualified installer.
If you install the system by yourself, it can cause serious
trouble such as water leaks, electric shocks, fire.
• Do not perform any change of protective 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 fire or burst.
• When perform the air conditioner operation (cooling
or drying 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 backflow 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.
• Do not install the outdoor unit in the locations listed
below.
• 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 plants.
• Locations where vibration can be amplified and
transmitted due to insufficient 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 (TV set or radio receiver is placed within 1m).
• Locations where drainage cannot run off safely.
It can affect surrounding environment and cause a claim.
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'10 • SCM-SM-094
RPC012A915
MULTI TYPE AIR CONDITIONER
R410A REFRIGERANT USED
Provide proper earthing