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2.5 Application data
2.5.1 Installation of outdoor unit
◎This manual describes outdoor unit installation work.
◎For indoor unit installation and electrical cabling, please refer to page 95.
◎When install the unit, be sure to check whether the selection of installation
place, power source specifications, usage limitation (piping length, height
differences between indoor and outdoor units, power source voltage and
etc.) and installation spaces
WARNING
●
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.
●
Use the original accessories and the specified components for installation.
If parts other than those prescribed by us are used, It may cause fall of the unit, water leaks, electric shocks, fire, refrigerant
leak, substanard performance, contrl failure and personal injury.
●
When installing in small rooms, take prevention measures not to exceed the density limit of refrigerant in the event of
leakage accordance with ISO5149.
Consult the expert about prevention measures. If the density of refrigerant exceeds the limit in the event of leakage, lack of
oxygen can occur, which can cause serious accidents.
●
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.
●
After completed installation, check that no refrigerant leaks from the system.
If refrigerant leaks into the room and comes into contact with an oven or other hot surface, poisonous gas is produced.
●
Hang up the unit at the specified points with ropes which can support the weight in lifting for portage. And to avoid jolting
out of alignment, be sure to hang up the unit at 4-point support.
An improper manner of portage such as 3-point support can cause death or serious personal injury due to falling of the unit.
●
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.
●
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 source 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.
●
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.
●
In connecting the power cable, make sure that no anomakies such as dust deposits, socket clogging or wobble are found
and insert the plug securely.
Accumulation of dust, clogging on the socket, or looseness of plugging can cause electric shocks and fire.
●
Be sure not to reuse existing refrigerant pipes
Conventional refrigerant oil or chlorine contained in the conventional refrigerant which is remaining in the existing refrigerant
pipes can cause deterioration of refrigerant oil of new unit. And 1.6 times higher pressure of R32 refrigerant than
conventional one can cause burst of existing pipe, personal injury or serious accident.
●
Do not perform brazing work in the airtight room
It can cause lack of oxygen.
●
Use the prescribed pipes, flare nuts and tools for R32.
Using existing parts (for R22 or R407C) can cause the unit failure and serious accidents due to burst of the refrigerant circuit.
●
Tighten the flare nut by using double spanners and torque wrench according to prescribed method. Be sure not to tighten
the flare nut too much.
Loose flare connection or damage on the flare part by tightening with excess torque can cause burst or refrigerant leaks
which may result in lack of oxygen.
●
Do not open the service 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 service valves before completed connection of refrigerant piping work, you
may incur frost bite or injury from an abrupt refrigerant outflow and air can be sucked into refrigerant circuit, which can
cause burst or personal injury due to anomalously high pressure in the refrigerant.
●
Do not put the drainage pipe directly into drainage channels where poisonous gases such as sulphide gas can occur.
Poisonous gases will flow into the room through drainage pipe and seriously affect the user's health and safety. It can also
cause the corrosion of the indoor unit and resultant unit failure or refrigerant leak.
●
Only use prescribed option 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 control or the use of non
specified component can cause fire or burst.
●
Be sure to switch off the power source in the event of installation, inspection or servicing.
If the power source 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 regarding removal of the unit.
Incorrect installation can cause water leaks, electric shocks or fire.
●
Stop the compressor before closing valve and disconnecting refrigerant pipes in case of pump down operation.
If disconnecting refrigerant pipes in state of opening service valves before compressor stopping, you may incur frost bite or
injury from an abrupt refrigerant outflow and air can be sucked, which can cause burst or personal injury due to
anomalously high pressure in 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 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.
●
Be sure to fix up the service panels.
Incorrect fixing can cause electric shocks or fire due to intrusion of dust or water.
●
Do not perform any repairs or modifications by yourself. Consult the dealer if the unit requires repair.
If you repair or modify the unit, it can cause water leaks, electric shocks or fire.
Notabilia as a unit designed for R32
Do not use any refrigerant other than R32. R32 will rise to pressure about 1.6 times higher than that of a conventional refrigerant.
●
A unit designed for R32 has adopted a different size outdoor unit service valve charge port and a different size check joint provided in the unit to
●
prevent the charging of a wrong refrigerant by mistake. The processed dimension of the flared part of a refrigerant pipe and a flare nut's parallel
side measurement have also been altered to raise strength against pressure. Accordingly, you are required to arrange dedicated R32 tools listed
in the table on the right before installing or servicing this unit.
Do not use a charge cylinder. The use of a charge cylinder will cause the refrigerant composition to change, which results in performance
●
degradation.
In charging refrigerant, always take it out from a cylinder in the liquid phase.
●
All indoor units must be models designed exclusively for R32. Please check connectable indoor unit models in a catalog, etc.
●
Designed for R32 refrigerant
WARNINGS
CAUTIONS
WARNINGS
CAUTIONS
12
-
Outdoor unit capacity
－
FDC90
155
CAUTION
●
Use the circuit breaker for all pole with correct capacity.
Using the incorrect circuit breaker, it can cause the unit malfunction and fire.
●
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.
●
Pay attention not to damage the drain pan by weld spatter when welding work is done near the indoor unit.
If weld spatter entered into the indoor unit during welding work, it can cause pin-hole in drain pan and result
in water leakage. To prevent such damage, keep the indoor unit in its packing or cover it.
●
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.
●
Be sure to perform air tightness test by pressurizing with 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.
●
Perform installation work properly according to this installation manual.
Improper installation can cause abnormal vibrations or increased noise generation.
●
Earth leakage breaker must be installed
If the earth leakage breaker is not installed, it can cause fire or electric shocks.
●
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 or fire due to short-circuiting. Never
connect the grounding wire to a gas pipe because if gas leaks, it could cause explosion or ignition.
●
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 fire.
●
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 fire.
●
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 fire.
●
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.
●
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 install nor use the system close to the equipment that generates electromagnetic 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 affect
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 fire. 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 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 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 (e.g.organic fertilizer)
• Locations with calcium chloride (e.g.snow melting agent)
• 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.
●
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 an animal or plants. The outlet air can affect adversely to the plant etc.
• 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 5m)
• Locations where drainage cannot run off safely.
It can affect surrounding environment and cause a claim
●
Do not use the unit for special purposes such as storing foods, cooling precision instruments and preservation of animals, plants or art.
It can cause the damage of the items.
●
Do not touch any buttons with wet hands
It can cause electric shocks
●
Do not shut off the power supply immediately after stopping the operation.
Wait at least 5 minutes, otherwise there is a risk of water leakage or breakdown.
●
Do not control the system with main power switch.
It can cause fire or water leakage. In addition, the fan can start unexpectedly, which can cause personal injury.
●
Do not touch any refrigerant pipes with your hands when the 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 operate the outdoor unit with any article placed on it.
You may incur property damage or personal injure from a fall of the article.
●
Do not step onto the outdoor unit.
You may incur injury from a drop or fall.
●
Do not clean up the unit with water.
It can cause electric shocks.
-
'20 • KX-T-373
PSC012D165
Dedicated R32 tools
a）
Gauge manifold
b）
Charge hose
c）
Electronic scale for refrigerant charging
d）
Torque wrench
e）
Flare tool
f）
Protrusion control copper pipe gauge
g ）
Vacuum pump adapter
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