2.5 Application data
2.5.1 Installation of outdoor unit
(1) On-site piping work
Important
●
Please take care so that installed pipes may not touch components within a unit.
●
During the pipe installation at site, keep the service valves shut all the time.
●
Give sufficient protections (compressed and brazed or by an adhesive tape) to pipe ends so that any water or foreign matters may not enter the pipes.
●
In bending a pipe, bend it to the largest possible radius (at least four times the pipe diameter). Do not bend a pipe repeatedly to correct its form.
●
An outdoor unit’s pipe and refrigerant piping are to be flare connected. Flare a pipe after engaging a flare nut onto it. A flare size for R32 is different from that for
conventional R407C. Although we recommend the use of flaring tools developed specifically for R32, conventional flaring tools can also be used by adjusting the
measurement of protrusion B with a protrusion control gauge.
●
Tighten a flare joint securely with two spanners. Observe flare nut tightening torque specified in the table below.
●
First remove the five screws ( mark) of the service panel and push it down into the direction of the arrow mark and then remove it by pulling it toward you.
●
The pipe can be laid in any of the following directions: side right, front, rear and downward.
●
Remove a knock-out plate provided on the pipe penetration to open a minimum necessary area and attach an edging material supplied as an accessory by cutting it to an
appropriate length before laying a pipe.
●
In laying pipes on the installation site, cut off the casing’s half blank that covers a hole for pipe penetration with nippers.
●
If there is a risk of small animals entering from the pipe penetration part, close the part with some sealing material or the like (to be arranged on the installer’s part).
●
In the case of an installation using a collective drain system, use a port other than the bottom one to take out cables and pipes. If the bottom port is used, seal it thoroughly
so that drain water may not spill out.
●
Use an elbow (to be arranged on the user’s part) to connect control valves to the piping.
●
In anchoring piping on the installation site, give 1.5m or a longer distance between an outdoor unit and an anchoring point where the piping is secured as illustrated below.
(A failure to observe this instruction may result in a pipe fracture depending on a method of isolating vibrations employed.)
●
The pipe should be anchored every 1.5m or less to isolate the vibration.
●
Please avoid forming any trap ( ) or bump ( ) in piping as they can cause fluid stagnation.
Designed for R32 refrigerant
COMPACT MULTI-AIR CONDITIONING SYSTEM OUTDOOR UNIT INSTALLATION MANUAL
Precautions for safety
190 200580
20
410
20
H
Floor surface
Floor surface
Floor surface
Liquid side
Horizontal
Horizontal
Horizontal
Floor surface
Floor surface
Gas side
Floor surface
Minimum pipe wall
thickness (mm)
Liquid side
Pipe diameter
(mm)
Minimum pipe wall
thickness (mm)
Flare
Gas side
Pipe diameter
(mm)
Model
Outdoor unit
Indoor unit
Connection
method
Flare
Connection
method
Unit piping specifications
The piping material should be phosphorus deoxidized copper seamless steel pipes. (C1220T, JIS H3300)
Attention
4-2. Piping work
Flare nut parallel side
measurement: H (mm)
φ6.35
φ9.52
φ12.7
φ15.88
Copper
pipe outer
diameter
Ｈ
17
22
26
29
Wooden pallet
Patch plate
Air inlet
Air outlet
Anchor bolt position
(4 locations)
Fasten with bolts
(M10-12)
Use a long block to extend the width.
Use a thicker block to
anchor deeper.
Heavy
Notabilia as a unit designed for R32
a）
b）
c）
d）
e）
f）
g
）
h）
Gauge manifold
Charge hose
Electronic scale for refrigerant charging
Torque wrench
Flare tool
Protrusion control copper pipe gauge
Vacuum pump adapter
Gas leak detector
Dedicated R32 tools
●
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.
(A wrong indoor unit, if connected into the system, will impair proper system operation)
3. UNIT DELIVERY AND INSTALLATION
When you sling the unit for portage, do not fail to take into consideration the deviation of the gravity center from its center.
Improper slinging may cause the unit to lose balance and fall.
CAUTION
Important
●
The protrusion of an anchor bolt on the front side must be kept within 15mm.
●
Securely install the unit so that it does not fall over during earthquakes or strong winds, etc.
●
Refer to the above illustrations for information regarding concrete foundations.
●
Install the unit in a level area. (With a gradient of 5mm or less.)
Improper installation can result in a compressor failure, broken piping within the unit and abnormal noise generation.
4. REFRIGERANT PIPING
4-1. Determination of piping specifications
(Please select from the following matrix according to indoor unit specifications and installation site conditions)
Refrigerant piping restrictions
Please do not fail to observe the following pipe sizes and limitations of use.
A failure to observe this instruction can result in a compressor failure or performance degradation.
Refrigerant piping size selection
Attention
●
Please use pipes of the pipe size specified for the outdoor unit for the section between the outdoor unit and the
first branching joint.
●
An appropriate pipe size between branching joints can vary depending on the connected indoor unit capacity
(total capacity connected downstream), please select an appropriate pipe size from the table shown on the right.
●
The pipe size between the branch pipe and the indoor unit should match that of the indoor unit.
●
Always install branch pipes either horizontally or vertically.
(1) Individual flow division method
●
For determination of appropriate branching joint or different diameter pipe joint sizes, please refer to
"Branching Pipe Set," (which can be purchased separately).
Attention
(2) Header Method
●
Depending on the number of units connected, connect blind pipes to header branching points
(on the indoor unit connection side).
●
For determination of appropriate header, different diameter pipe joint and blind pipe sizes,
please refer to "Header Set," (which can be purchased separately).
●
For the section between an indoor unit and the header, use a pipe of the diameter specified for the indoor unit.
●
To couple with the header, use a different diameter pipe joint to adjust to the pipe diameter specified for the indoor unit.
●
The header must be so installed that it branches horizontally (for both gas and liquid)
Item
Outdoor unit
main pipe
Total capacity of
indoor units
Model
90, 112, 121
140, 155
less than 70
70 or more
Gas pipe
φ15.88
φ12.7
φ15.88
Liquid pipe
φ9.52
φ9.52
φ9.52
●
Please use pipes clean on both the inside and outside and free from contaminants harmful to operation such as sulfur, oxides, dust, chips, oil, fat and water.
●
Use the following material for refrigerant piping.
Material: phosphorus deoxidized seamless copper pipe (C1120T-0, JIS H3300)
●
Thickness and size: Please select proper pipes according to the pipe size selection guideline.
(Since this unit uses R32, Select pipes having a wall thickness larger than the specified minimum pipe thickness.
●
For branching pipes, use a genuine branching pipe set or header set at all times.
●
Install a branching pipe set, paying attention to the direction of attachment, after you have perused through the installation manual supplied with it.
●
The length of piping from outdoor unit to first branch is 1.5m or more.
●
For the handling of service valves, please refer to 4-2. Piping work.
①Place the unit outlet pipe perpendicular
to the wind direction.
②Please install so the direction of the air from the blowing
outlet will be perpendicular to the direction of the wind.
③When the foundation is not level, use wires
to tie down the unit.
Sample
Size
Ｌ1
Ｌ2
Ｌ3
Ｌ4
Ⅰ
Open
300
150
5
Ⅱ
Open
5
300
5
Ⅲ
500
Open
150
5
Air
inlet
Air
inlet
Air
outlet
Service
space
L3
L2
L4
L1
(Unit : mm)
a) Minimum installation space
(
Please select an installation point with due attention to the direction of installation of the refrigerant pipe
)
(If the installation conditions shown in this drawing are not satisfied, please consult with your dealer
or the manufacturer.)
b)
When units are installed side by side, leave a 10mm or wider service space between the units.
c) Walls surrounding the unit in the four sides are not acceptable.
d) There must be a 1-meter or larger space in the above.
e) A barrier wall placed in front of the exhaust diffuser must not be higher than the unit.
* Please ask to the dealer regarding the options such as the flex flo
w adapter and the snow guard hood.
Ａ
Ｂ
Flared pipe end: A (mm) Copper pipe protrusion for flaring: B (mm)
φ6.35
φ9.52
φ12.7
φ15.88
Copper
pipe outer
diameter
0
-0.4
Ａ
9.1
13.2
16.6
19.7
φ6.35
φ9.52
φ12.7
φ15.88
Copper
pipe outer
diameter
In the case of a rigid (clutch) type
With an R410A tool With a conventional tool
0−0.5 0.7−1.3
Over 1.5m
Bolt fastening positions
Item
Over 500 mm
●
Always select pipes meeting the
minimum wall thickness
requirement.
In case that the unit operates in cooling mode, when the outdoor temperature is –5°C or lower,
please equip a flex flow adapter and a snow guard hood (option) on the unit.
Outdoor unit capacity
FDC9 0
155
1. BEFORE BEGINNING INSTALLATION
* Only indoor units of the above-listed series can be connected in the refrigerant system.
FD○△△KXE6 KXZ Series indoor unit
FD○A△△KXE4 Series indoor unit
OK
×
ConnectabilityRemote control
(2)
The combination is possible if in the table below condition (number of units,capacity).
Outdoor unit
1−8
90−168
Indoor unit
Number of connectable units
Total capacity of indoor units
140
1−10
112−210
155
1−10
124−232
112
1−8
90−135
90
1−8
97−182
121
2. INSTALLATION LOCATION (Obtain approval from the customer when selecting the installation area.)
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
φ9.52
φ6.35
φ6.35
φ6.35
φ6.35
φ6.35
φ6.35
φ9.52
φ9.52
φ9.52
φ9.52
φ9.52
1.0
0.8
0.8
0.8
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.0
φ15.88
φ 9.52
φ 9.52
φ 9.52
φ12.7
φ12.7
φ12.7
φ15.88
φ15.88
φ15.88
φ15.88
φ15.88
90, 112, 121, 140, 155
15
22
28
36
45
56
71
90
112
140
160
Name Quantity
1
1
1
3
Usage location Attachment position
It is attached to the bracket with an adhesive tape in the
proximity of the service valve.
It is attached to the front of a unit.
It is attached in the unit.
Use it for protection of a knock-out hole.
Use it to fix the wiring.
When the installation work is completed,
give instructions to the customer and ask him/her to keep it.
[Items sold separately]
Refrigerant pipe distribution parts, which are not contained in the package, will be required for installation.
As for refrigerant pipe distribution parts, we offer branching pipe sets (Model type: DIS) and header sets (Model type: HEAD) as parts used on the indoor side of piping.
Please select one suiting your application. In selecting distribution parts, please also refer to “4. REFRIGERANT PIPING.”
If you are not sure which parts to select, please consult with your dealer or the manufacturer.
Use refrigerant branching pipe sets and header sets designed exclusively for R32 without fail.
2-1. Selecting the installation location
2-2. Installation space (Ex. servicing space)
For front connection
For downward connection
For side right connection
For rear connection
In
side
Out
side
Catch
Delivery Portage
●
In installing the unit, fix the unit's legs with bolts specified below.
●
The right hand side of the unit as viewed from the front
(diffuser side) is heavier. A person carrying the right hand
side must take heed of this fact. A person carrying the left
hand side must hold with his right hand the handle provided
on the front panel of the unit and with his left hand the corner
column section.
●
Deliver the unit as close as possible to
the installation site before removing it
from the packaging.
●
If unpacked and deliver cannot be
avoided, use a nylon sling or a rope
with pads placed where the rope
contacts the unit so it is not scratched.
●
Maximum length (To the farthest indoor unit)
……………
Within 70m
●
Equivalent length (To the farthest indoor unit)
……………
Within 95m
●
Total pipe length (Combined total length of pipes)
………
Within 100m
●
φ9.52 pipe length
………………………………………
Within 50m
●
Height difference
(1) When the outdoor unit is above the indoor unit ………………………… Within 30m
(2) When the outdoor unit is below the indoor unit ………………………… Within 15m
(3) Height difference between indoor units in the same system …………… Within 15m
(4) Height difference between indoor units and first branch………………… Within 15m
〇 Where air is not trapped.
〇 Where the installation fittings can be firmly installed.
〇 Where any object does not prevent inlet or outlet air.
〇 Out of the heat range of other heat sources.
〇 Where strong winds will not blow against the outlet air.
〇 A place where stringent regulation of electric noises is applicable.
〇 Where it is safe for the drain water to be discharged.
〇 Where noise and hot air will not bother neighboring residents.
〇 Where snow will not accumulate.
〇 A place where no TV set or radio receiver is placed within 5m.
(If electrical interference is caused, seek a place less likely to cause the problem)
Indoor and outdoor unit combinations
(1)
Combination can be arranged with the conditions (number of units, capacity) shown below.
[Accessory]
Piping connection position and the piping remove direction
Indoor unit
Edging
User’s manual
Installation kit
It is in the bag this INSTALLATION SHEET in.
Use it for power source wiring. (One is a backup)
Round terminal
(FDC90 155KXZEN1-W only)
Please note
a) If there is a possibility of a short-circuit, then install a flex flow adapter.
b) When installing multiple units, provide sufficient intake space so that a short-circuit does not occur.
c) In areas where there is snowfall, install the unit in a frame or under a snow hood to prevent snow from accumulating on it.
(Inhibition of collective drain discharge in a snowy country)
d) Do not install the equipment in areas where there is a danger for potential explosive atmosphere.
e) Install the equipment in a location that can sufficiently support the weight of the equipment.
f) If a unit is installed into a special environment as shown below, there will be a danger that the corrosion of the outdoor unit or its
malfunctioning is caused. If this is the case, please consult with the distributor from whom you have purchased the unit.
・Where corrosive gas is generated (such as a hot-spring resort area).
・Where the unit is subject to sea breezes (coastal area).
・Where the unit is subject to oil mists.
・Where equipment generating electromagnetic waves exists in the vicinity.
g) When strong winds occur
●
Where it is likely that the unit is subjected to strong winds, provide wind guards according to the following guidelines.
Strong winds can cause performance degradation, an accidental stop due to a rise of high pressure and a broken fan.
CAUTION
Please leave sufficient clearance
around the unit without fail.
Otherwise, a risk of compressor
and/or electric component failure
may arise.
CAUTION
If you tighten it without using double spanners, you may deform
the service valve, which can cause an inflow of nitrogen gas into
the outdoor unit.
Outdoor unit
Pipe fastening position
(Check that the models, power supply specifications, piping, wiring are correct.)
Take particular care in carrying in or moving the unit, and always perform
such an operation with two or more persons.
( )
Fasten with anchor bolts
Wind direction
Wind direction
PSC012D132
●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 and . The matters with possibilities leading to serious consequences such as death or serious personal
injury due to erroneous handling are listed in the and the matters with 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 . These are very important precautions for safety. Be sure to observe all of them without fail.
●The meaning of "Marks" used here are as shown on the right.
●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
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 3phase outdoor unit, EN61000-3-2 is not applicable as consent by the utility company or notification to the utility company is given before usage.
●5 and 6HP units of single phase power source are equipment complying with IEC61000-3-12.
Never do it under any circumstance. Always do it according to the instruction.
WARNINGS
WARNINGS
CAUTIONS
CAUTIONS
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 supply specifications, usage limitation (piping length, height
differences between indoor and outdoor units, power supply voltage and
etc.) and installation spaces
Use the inside
half blank
for rear
connection
Horizontal
Floor surface
Floor surface
Floor surface
Vertical
Floor surface
WARNING
CAUTION
●
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 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.
●
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 and R410A 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 and R410A.
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 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.
●
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 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.
●
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.
RC–EX1A (2 cores)
RC–E5 (2 cores)
RC–E4 (2 cores)
RC–E3 (2 cores)
RC–E1 (3 cores)
(1) On-site piping work
Important
●
Please take care so that installed pipes may not touch components within a unit.
●
During the pipe installation at site, keep the service valves shut all the time.
●
Give sufficient protections (compressed and brazed or by an adhesive tape) to pipe ends so that any water or foreign matters may not enter the pipes.
●
In bending a pipe, bend it to the largest possible radius (at least four times the pipe diameter). Do not bend a pipe repeatedly to correct its form.
●
An outdoor unit’s pipe and refrigerant piping are to be flare connected. Flare a pipe after engaging a flare nut onto it. A flare size for R32 is different from that for
conventional R407C. Although we recommend the use of flaring tools developed specifically for R32, conventional flaring tools can also be used by adjusting the
measurement of protrusion B with a protrusion control gauge.
●
Tighten a flare joint securely with two spanners. Observe flare nut tightening torque specified in the table below.
●
First remove the five screws ( mark) of the service panel and push it down into the direction of the arrow mark and then remove it by pulling it toward you.
●
The pipe can be laid in any of the following directions: side right, front, rear and downward.
●
Remove a knock-out plate provided on the pipe penetration to open a minimum necessary area and attach an edging material supplied as an accessory by cutting it to an
appropriate length before laying a pipe.
●
In laying pipes on the installation site, cut off the casing’s half blank that covers a hole for pipe penetration with nippers.
●
If there is a risk of small animals entering from the pipe penetration part, close the part with some sealing material or the like (to be arranged on the installer’s part).
●
In the case of an installation using a collective drain system, use a port other than the bottom one to take out cables and pipes. If the bottom port is used, seal it thoroughly
so that drain water may not spill out.
●
Use an elbow (to be arranged on the user’s part) to connect control valves to the piping.
●
In anchoring piping on the installation site, give 1.5m or a longer distance between an outdoor unit and an anchoring point where the piping is secured as illustrated below.
(A failure to observe this instruction may result in a pipe fracture depending on a method of isolating vibrations employed.)
●
The pipe should be anchored every 1.5m or less to isolate the vibration.
●
Please avoid forming any trap ( ) or bump ( ) in piping as they can cause fluid stagnation.
Designed for R32 refrigerant
COMPACT MULTI-AIR CONDITIONING SYSTEM OUTDOOR UNIT INSTALLATION MANUAL
Precautions for safety
190 200580
20
410
20
H
Floor surface
Floor surface
Floor surface
Liquid side
Horizontal
Horizontal
Horizontal
Floor surface
Floor surface
Gas side
Floor surface
Minimum pipe wall
thickness (mm)
Liquid side
Pipe diameter
(mm)
Minimum pipe wall
thickness (mm)
Flare
Gas side
Pipe diameter
(mm)
Model
Outdoor unit
Indoor unit
Connection
method
Flare
Connection
method
Unit piping specifications
The piping material should be phosphorus deoxidized copper seamless steel pipes. (C1220T, JIS H3300)
Attention
4-2. Piping work
Flare nut parallel side
measurement: H (mm)
φ6.35
φ9.52
φ12.7
φ15.88
Copper
pipe outer
diameter
Ｈ
17
22
26
29
Wooden pallet
Patch plate
Air inlet
Air outlet
Anchor bolt position
(4 locations)
Fasten with bolts
(M10-12)
Use a long block to extend the width.
Use a thicker block to
anchor deeper.
Heavy
Notabilia as a unit designed for R32
a）
b）
c）
d）
e）
f）
g
）
h）
Gauge manifold
Charge hose
Electronic scale for refrigerant charging
Torque wrench
Flare tool
Protrusion control copper pipe gauge
Vacuum pump adapter
Gas leak detector
Dedicated R32 tools
●
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.
(A wrong indoor unit, if connected into the system, will impair proper system operation)
3. UNIT DELIVERY AND INSTALLATION
When you sling the unit for portage, do not fail to take into consideration the deviation of the gravity center from its center.
Improper slinging may cause the unit to lose balance and fall.
CAUTION
Important
●
The protrusion of an anchor bolt on the front side must be kept within 15mm.
●
Securely install the unit so that it does not fall over during earthquakes or strong winds, etc.
●
Refer to the above illustrations for information regarding concrete foundations.
●
Install the unit in a level area. (With a gradient of 5mm or less.)
Improper installation can result in a compressor failure, broken piping within the unit and abnormal noise generation.
4. REFRIGERANT PIPING
4-1. Determination of piping specifications
(Please select from the following matrix according to indoor unit specifications and installation site conditions)
Refrigerant piping restrictions
Please do not fail to observe the following pipe sizes and limitations of use.
A failure to observe this instruction can result in a compressor failure or performance degradation.
Refrigerant piping size selection
Attention
●
Please use pipes of the pipe size specified for the outdoor unit for the section between the outdoor unit and the
first branching joint.
●
An appropriate pipe size between branching joints can vary depending on the connected indoor unit capacity
(total capacity connected downstream), please select an appropriate pipe size from the table shown on the right.
●
The pipe size between the branch pipe and the indoor unit should match that of the indoor unit.
●
Always install branch pipes either horizontally or vertically.
(1) Individual flow division method
●
For determination of appropriate branching joint or different diameter pipe joint sizes, please refer to
"Branching Pipe Set," (which can be purchased separately).
Attention
(2) Header Method
●
Depending on the number of units connected, connect blind pipes to header branching points
(on the indoor unit connection side).
●
For determination of appropriate header, different diameter pipe joint and blind pipe sizes,
please refer to "Header Set," (which can be purchased separately).
●
For the section between an indoor unit and the header, use a pipe of the diameter specified for the indoor unit.
●
To couple with the header, use a different diameter pipe joint to adjust to the pipe diameter specified for the indoor unit.
●
The header must be so installed that it branches horizontally (for both gas and liquid)
Item
Outdoor unit
main pipe
Total capacity of
indoor units
Model
90, 112, 121
140, 155
less than 70
70 or more
Gas pipe
φ15.88
φ12.7
φ15.88
Liquid pipe
φ9.52
φ9.52
φ9.52
●
Please use pipes clean on both the inside and outside and free from contaminants harmful to operation such as sulfur, oxides, dust, chips, oil, fat and water.
●
Use the following material for refrigerant piping.
Material: phosphorus deoxidized seamless copper pipe (C1120T-0, JIS H3300)
●
Thickness and size: Please select proper pipes according to the pipe size selection guideline.
(Since this unit uses R32, Select pipes having a wall thickness larger than the specified minimum pipe thickness.
●
For branching pipes, use a genuine branching pipe set or header set at all times.
●
Install a branching pipe set, paying attention to the direction of attachment, after you have perused through the installation manual supplied with it.
●
The length of piping from outdoor unit to first branch is 1.5m or more.
●
For the handling of service valves, please refer to 4-2. Piping work.
①Place the unit outlet pipe perpendicular
to the wind direction.
②Please install so the direction of the air from the blowing
outlet will be perpendicular to the direction of the wind.
③When the foundation is not level, use wires
to tie down the unit.
Sample
Size
Ｌ1
Ｌ2
Ｌ3
Ｌ4
Ⅰ
Open
300
150
5
Ⅱ
Open
5
300
5
Ⅲ
500
Open
150
5
Air
inlet
Air
inlet
Air
outlet
Service
space
L3
L2
L4
L1
(Unit : mm)
a) Minimum installation space
(
Please select an installation point with due attention to the direction of installation of the refrigerant pipe
)
(If the installation conditions shown in this drawing are not satisfied, please consult with your dealer
or the manufacturer.)
b)
When units are installed side by side, leave a 10mm or wider service space between the units.
c) Walls surrounding the unit in the four sides are not acceptable.
d) There must be a 1-meter or larger space in the above.
e) A barrier wall placed in front of the exhaust diffuser must not be higher than the unit.
* Please ask to the dealer regarding the options such as the flex flo
w adapter and the snow guard hood.
Ａ
Ｂ
Flared pipe end: A (mm) Copper pipe protrusion for flaring: B (mm)
φ6.35
φ9.52
φ12.7
φ15.88
Copper
pipe outer
diameter
0
-0.4
Ａ
9.1
13.2
16.6
19.7
φ6.35
φ9.52
φ12.7
φ15.88
Copper
pipe outer
diameter
In the case of a rigid (clutch) type
With an R410A tool With a conventional tool
0−0.5 0.7−1.3
Over 1.5m
Bolt fastening positions
Item
Over 500 mm
●
Always select pipes meeting the
minimum wall thickness
requirement.
In case that the unit operates in cooling mode, when the outdoor temperature is –5°C or lower,
please equip a flex flow adapter and a snow guard hood (option) on the unit.
Outdoor unit capacity
FDC9 0 15 5
1. BEFORE BEGINNING INSTALLATION
* Only indoor units of the above-listed series can be connected in the refrigerant system.
FD○△△KXE6 KXZ Series indoor unit
FD○A△△KXE4 Series indoor unit
OK
×
ConnectabilityRemote control
(2)
The combination is possible if in the table below condition (number of units,capacity).
Outdoor unit
1−8
90−168
Indoor unit
Number of connectable units
Total capacity of indoor units
140
1−10
112−210
155
1−10
124−232
112
1−8
90−135
90
1−8
97−182
121
2. INSTALLATION LOCATION (Obtain approval from the customer when selecting the installation area.)
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
φ9.52
φ6.35
φ6.35
φ6.35
φ6.35
φ6.35
φ6.35
φ9.52
φ9.52
φ9.52
φ9.52
φ9.52
1.0
0.8
0.8
0.8
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.0
φ15.88
φ 9.52
φ 9.52
φ 9.52
φ12.7
φ12.7
φ12.7
φ15.88
φ15.88
φ15.88
φ15.88
φ15.88
90, 112, 121, 140, 155
15
22
28
36
45
56
71
90
112
140
160
Name Quantity
1
1
1
3
Usage location Attachment position
It is attached to the bracket with an adhesive tape in the
proximity of the service valve.
It is attached to the front of a unit.
It is attached in the unit.
Use it for protection of a knock-out hole.
Use it to fix the wiring.
When the installation work is completed,
give instructions to the customer and ask him/her to keep it.
[Items sold separately]
Refrigerant pipe distribution parts, which are not contained in the package, will be required for installation.
As for refrigerant pipe distribution parts, we offer branching pipe sets (Model type: DIS) and header sets (Model type: HEAD) as parts used on the indoor side of piping.
Please select one suiting your application. In selecting distribution parts, please also refer to “4. REFRIGERANT PIPING.”
If you are not sure which parts to select, please consult with your dealer or the manufacturer.
Use refrigerant branching pipe sets and header sets designed exclusively for R32 without fail.
2-1. Selecting the installation location
2-2. Installation space (Ex. servicing space)
For front connection
For downward connection
For side right connection
For rear connection
In
side
Out
side
Catch
Delivery Portage
●
In installing the unit, fix the unit's legs with bolts specified below.
●
The right hand side of the unit as viewed from the front
(diffuser side) is heavier. A person carrying the right hand
side must take heed of this fact. A person carrying the left
hand side must hold with his right hand the handle provided
on the front panel of the unit and with his left hand the corner
column section.
●
Deliver the unit as close as possible to
the installation site before removing it
from the packaging.
●
If unpacked and deliver cannot be
avoided, use a nylon sling or a rope
with pads placed where the rope
contacts the unit so it is not scratched.
●
Maximum length (To the farthest indoor unit)
……………
Within 70m
●
Equivalent length (To the farthest indoor unit)
……………
Within 95m
●
Total pipe length (Combined total length of pipes)
………
Within 100m
●
φ9.52 pipe length
………………………………………
Within 50m
●
Height difference
(1) When the outdoor unit is above the indoor unit ………………………… Within 30m
(2) When the outdoor unit is below the indoor unit ………………………… Within 15m
(3) Height difference between indoor units in the same system …………… Within 15m
(4) Height difference between indoor units and first branch………………… Within 15m
〇 Where air is not trapped.
〇 Where the installation fittings can be firmly installed.
〇 Where any object does not prevent inlet or outlet air.
〇 Out of the heat range of other heat sources.
〇 Where strong winds will not blow against the outlet air.
〇 A place where stringent regulation of electric noises is applicable.
〇 Where it is safe for the drain water to be discharged.
〇 Where noise and hot air will not bother neighboring residents.
〇 Where snow will not accumulate.
〇 A place where no TV set or radio receiver is placed within 5m.
(If electrical interference is caused, seek a place less likely to cause the problem)
Indoor and outdoor unit combinations
(1)
Combination can be arranged with the conditions (number of units, capacity) shown below.
[Accessory]
Piping connection position and the piping remove direction
Indoor unit
Edging
User’s manual
Installation kit
It is in the bag this INSTALLATION SHEET in.
Use it for power source wiring. (One is a backup)
Round terminal
(FDC90 155KXZEN1-W only)
Please note
a) If there is a possibility of a short-circuit, then install a flex flow adapter.
b) When installing multiple units, provide sufficient intake space so that a short-circuit does not occur.
c) In areas where there is snowfall, install the unit in a frame or under a snow hood to prevent snow from accumulating on it.
(Inhibition of collective drain discharge in a snowy country)
d) Do not install the equipment in areas where there is a danger for potential explosive atmosphere.
e) Install the equipment in a location that can sufficiently support the weight of the equipment.
f) If a unit is installed into a special environment as shown below, there will be a danger that the corrosion of the outdoor unit or its
malfunctioning is caused. If this is the case, please consult with the distributor from whom you have purchased the unit.
・Where corrosive gas is generated (such as a hot-spring resort area).
・Where the unit is subject to sea breezes (coastal area).
・Where the unit is subject to oil mists.
・Where equipment generating electromagnetic waves exists in the vicinity.
g) When strong winds occur
●
Where it is likely that the unit is subjected to strong winds, provide wind guards according to the following guidelines.
Strong winds can cause performance degradation, an accidental stop due to a rise of high pressure and a broken fan.
CAUTION
Please leave sufficient clearance
around the unit without fail.
Otherwise, a risk of compressor
and/or electric component failure
may arise.
CAUTION
If you tighten it without using double spanners, you may deform
the service valve, which can cause an inflow of nitrogen gas into
the outdoor unit.
Outdoor unit
Pipe fastening position
(Check that the models, power supply specifications, piping, wiring are correct.)
Take particular care in carrying in or moving the unit, and always perform
such an operation with two or more persons.
( )
Fasten with anchor bolts
Wind direction
Wind direction
PSC012D132
●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 and . The matters with possibilities leading to serious consequences such as death or serious personal
injury due to erroneous handling are listed in the and the matters with 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 . These are very important precautions for safety. Be sure to observe all of them without fail.
●The meaning of "Marks" used here are as shown on the right.
●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
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 3phase outdoor unit, EN61000-3-2 is not applicable as consent by the utility company or notification to the utility company is given before usage.
●5 and 6HP units of single phase power source are equipment complying with IEC61000-3-12.
Never do it under any circumstance. Always do it according to the instruction.
WARNINGS
WARNINGS
CAUTIONS
CAUTIONS
◎
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 supply specifications, usage limitation (piping length, height
differences between indoor and outdoor units, power supply voltage and
etc.) and installation spaces
Use the inside
half blank
for rear
connection
Horizontal
Floor surface
Floor surface
Floor surface
Vertical
Floor surface
WARNING
CAUTION
●
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 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.
●
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 and R410A 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 and R410A.
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 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.
●
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 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.
●
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.
RC–EX1A (2 cores)
RC–E5 (2 cores)
RC–E4 (2 cores)
RC–E3 (2 cores)
RC–E1 (3 cores)
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