Mitsubishi Heavy Industries SRK60ZJX-S, Technical Manual

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107
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'10 • SR-T-091
<Table of pipe size restrictions>
◎:
Standard pipe size
○:
Usable
△:
Restricted to shorter pipe length limits
● Please consult with our distributor in the area, if you need to recover refrigerant and charge it again.
● Any combinations of pipe sizes not listed in the table are not usable.
Wires for connecting indoor
and outdoor units
Exterior tape
Gas piping
Insulation
Liquid piping
Band (accessory)
Pipe cover (accessory)
Additional charge volume (kg) = {Main pipe length (m) – Length covered without additional charge shown in the table (m)}
×
Additional charge volume per meter of pipe shown in the table (kg/m)
Formula to calculate the volume of additional refrigerant required
4. ELECTRICAL WIRING WORK
For details of electrical cabling, refer to the indoor unit installation manual.
3. DRAIN PIPING WORK
40
Pipe size
50
60
Liquid pipe ø6.35 ø9.52
Gas pipe ø12.7 ø12.7
Usability ◎ △
Maximum one-way pipe length 30 10
Length covered without additional charge 15 5
Usability
◎ △
Maximum one-way pipe length 30 10
Length covered without additional charge 15 15
Usability ◎ △
Maximum one-way pipe length 30 10
Length covered without additional charge 15 5
Additional charge volume per meter of pipe
0.02kg/m 0.06kg/m
Formula to calculate additional charge volume
※ If you obtain a negative figure as a result of calculation, no additional refrigerant needs to be charged.
Example) When an 60 is installed in a 10m long existing pipe system (liquid
φ
9.52, gas
φ
12.7),
the quantity of refrigerant to charge additionally should be (10m-5m) x 0.06kg/m = 0.3 kg.
7) Additional refrigerant charge
Additional charge volume (kg) = { Main length (m) – Factory charged volume 15 (m) } x 0.02 (kg/m)
*When an additional charge volume calculation result is negative,
it is not necessary to charge refrigerant additionally.
8) Heating and condensation prevention
(1) Dress refrigerant pipes (both gas and liquid pipes) for heat insulation and prevention of dew condensation.
･
Improper heat insulation/anti-dew dressing can result in a water leak or dripping causing damage to household effects, etc.
(2) Use a heat insulating material that can withstand 120
℃
or a higher temperature. Poor heat insulating capacity can cause heat insulation problems or cable
deterioration.
･
All gas pipes must be securely heat insulated in order to prevent damage from dripping water that comes from the condensation formed on them during a cooling operation
or personal injury from burns because their surface can reach quite a high temperature due to discharged gas flowing inside during a heating operation.
･
Wrap indoor units’ flare joints with heat insulating parts (pipe cover) for heat insulation (both gas and liquid pipes).
･
Give heat insulation to both gas and liquid side pipes. Bundle a heat insulating material and a pipe tightly together so that no gaps may be left between them and wrap them
together with a connecting cable by a dressing tape.
･
Both gas and liquid pipes need to be dressed with 20 mm or thicker heat insulation materials above the ceiling where relative humidity exceeds 70%.
CAUTION
Power cable, indoor-outdoor connecting wires
Always use an earth leakage circuit breaker designed for inverter circuits to
prevent a faulty operation.
NO
Are the existing units our products?
NO
NO
NO
Is the existing pipe system to reuse free of corrosion, flaws or dents?
Repair the damaged parts.
Remove those branches.
Repair the damaged parts.
Check the pipe system for air tightness on the site.
Repair the damaged parts.
NO
NO
NO
NO
No loose pipe supports
NO
YES
START
The existing pipe system is reusable.
The existing pipe system is not reusable.
Install a new pipe system.
YES YES
YES
YES
YES
Are an outdoor unit and an indoor unit connected to the
existing pipe system to reuse?
Is the unit to install in the existing pipe system a
twin-triple-double-twin model?
Is the existing pipe system to reuse free of gas leaks?
(Check whether refrigerant charge was required frequently for
the system before)
Are heat insulation materials of the existing pipe system to
reuse free of peel-offs or deterioration?
(Heat insulation is necessary for both gas and liquid pipes)
Change the branching pipe to a specified type.
Does the existing pipe system to reuse satisfy all of the following?
(1) The pipe length is 30m or less.
(2) The pipe size conforms to the table of pipe size restrictions.
(3) The elevation difference between the indoor and outdoor units
conforms to the following restrictions.
Where the outdoor unit is above: 15m or less
Where the outdoor unit is below: 15m or less
Which of the following refrigeration oils
does the existing unit use?
Suniso, MS, Barrel Freeze, HAB, Freol,
ether oil, ester oil
Please make an
inquiry for
reusability.
※ Check with the flow chart developed for a case where
an existing pipe system is reused for a
twin-triple-double-twin model published as a
technical data sheet.
Change
Change is impossible.
Can Use
Can‘t
Use
Repair is impossible.
Air tightness is
impossible.
Remove is
impossible
Repair is impossible.
Repair
Repair
Repair
Some loose pipe supports
Air tightness is OK
Remove
5. UTILIZATION OF EXISTING PIPING
Check whether an existing pipe system is reusable or not by using the following flow chart.
WARNING
<Where the existing unit can be run for a cooling operation.>
Carry out the following steps with the excising unit (in the order of (1), (2), (3) and (4))
(1) Run the unit for 30 minutes for a cooling operation.
(2) Stop the indoor fan and run the unit for 3 minutes for a cooling operation (returning liquid)
(3) Close the liquid side operation valve of the outdoor unit and pump down (refrigerant recovery)
(4) Blow with nitrogen gas.
※
If discolored refrigeration oil or any foreign matters is discharged
by the blow, wash the pipe system or install a new pipe system.
● For the flare nut, do not use the old one, but use the one supplied with the outdoor unit.
Process a flare to the dimensions specified for R410A.
<Where the existing unit cannot be run for a cooling operation.>
Wash the pipe system or install a new pipe system.
● If you choose to wash the pipe system, please contact our distributor in the area.
●
In cabling, fasten cables securely with cable clamps so that no external force may work on terminal connections.
●
Grounding terminals are prorided in the control box.
● Always perform grounding system installation work with the power cord unplugged.
●
Connect a pair bearing a common terminal number with an indoor-outdoor connecting wire.
●
For an installation measuring 15 m or shorter in pipe length, please charge the refrigerant volume charged for shipment at the
factory, when you recharge refrigerant after servicing etc.
Aren’t there any loose pipe supports?
Are there any branch pipes with no indoor unit connected?
Electrical installation work must be performed by an electrical installation service provider qualified by a power provider of the country.
Electrical installation work must be executed according to the technical standards and other regulations applicable to electrical installations in the country.
●
Do not use any supply cord lighter than one specified in parentheses for each type below.
･
braided cord (code designation 60245 IEC 51),
･
ordinary tough rubber sheathed cord (code designation 60245 IEC 53)
･
flat twin tinsel cord (code designation 60227 IEC 41);
Use polychloroprene sheathed flexible cord (code designation 60245 IEC57) for supply cords of parts of appliances for outdoor use.
●
Ground the unit. Do not connect the grounding wire to a gas pipe, water pipe, lightning rod or telephone grounding wire.
If impropery grounded, an electric shock or malfunction may result.
●
A grounding wire must be connected before connecting the power cable. Provide a grounding wire longer than the power cable.
●
The installation of an impulse withstanding type earth leakage breaker is necessary. A failure to install an earth leakage breaker can result in an
acccident such as an electric shock or a fire.
●
Do not turn on the power until the electrical work is completeted .
●
Do not use a condensive capacitor for power factor improvement under any circumstances. (It dose not improve power factor, while it can cause
an abnormal overheat accident)
●
For power supply cables, use conduits.
●
Do not lay electronic control cables (remote control and signaling wires) and other cables together outside the unit. Laying them together can result
in the malfunctioning or a failure of the unit due to electric noises.
●
Fasten cables so that may not touch the piping, etc.
●
When cables are connected, make sure that all electrical components within the electrical component box are free of loose connector coupling or
terminal connection and then attach the cover securely. (Improper cover attachment can result in malfunctioning or a failure of the unit, if water
penetrates into the box.)
●
Always use a three-core cable for an indoor-outdoor connecting cable. Never use a shield cable.
L
Outdoor unit
Switchgear or Circuit breaker
N
1 2/N 3
1 2/N 3
Indoor unit
Earth leakage breaker
(Harmonic resistant type)
Cable clamp
Power supply terminal block
○ It holds cables in place and protect the terminal
connection from external force.
○ This clamp is for the cable in the outside
diameter 9~15mm.
Please adjust it when not suitable.
○ It holds cables in place and protect the terminal
connection from external force.
○ Please be sure to carry out D-type (type III)
grounding work.
Interconnecting and
grounding wires
(minimum)
40
50
60
2.0
mm
2 30A 16A
1.5mm×4
15A,30mA,
0.1sec or less
Switchgear or Circuit Breaker
Switch breaker Over current protector
rated capacity
Earth leakage breaker
●
The specifications shown in the above table are for units without heaters. For units with heaters, refer to
the installation instructions or the construction instructions of the indoor unit.
● Switchgear or Circuit breaker capacity which is calculated from MAX. over current should be chosen along the
regulations in each country.
● The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than
three cables contained in a conduit and a voltage drop is 2%. For an installation falling outside of these
conditions, please follow the internal cabling regulations. Adapt it to the regulation in effect in each country.
Power souce
(minimum)
Model Phase
Single-phase
Grounding terminal
Take care so that installed pipes may not touch components within a unit.
If touching with an internal component, it will generate abnormal sounds and/or vibrations.
4) On-site piping work
IMPORTANT
How to remove the side cover
● Carry out the on site piping work with the operation valve fully closed.
●
Give sufficient protection to a pipe end (compressed and blazed, or with an adhesive tape) so
that water or foreign matters may not enter the piping.
●
Bend a pipe to a radius as large as practical.(R100~R150) Do not bend a pipe repeatedly to correct
its form.
● Flare connection is used between the unit and refrigerant pipe. Flare a pipe after engaging a
flare nut onto it. Flare dimensions for R410A are different from those for conventional R407C.
Although we recommend the use of flaring tools designed specifically for R410A, 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 a double spanner.
Please remove the screw of a side cover and remove to the front.
A
B
Flared pipe end : A
(mm)
φ 6.35
φ
12.7
Copper
pipe outer
diameter
0
ー
0
．
4
Ａ
9
．
1
16.6
Copper pipe protrusion for flaring : B
(mm)
φ
6.35
φ
12.7
Copper
pipe outer
diameter
In the case of a rigid (clutch) type
With an R410A tool With a conventional tool
0 〜 0.5 1.0 〜 1.5
CAUTION
CAUTION
Do not apply force beyond proper fastening torque in tightening the flare nut.
Fix both liquid and gas operation valves at the valve main bodies as illustrated on the right, and then fasten them,
applying appropriate fastening torque.
Tightening angle (
°
) Tightening torque (N ･ m)
φ
6.35 (1/4")
φ
12.7 (1/2")
14 〜 18
49 〜 61
45 〜 60
30 〜 45
150
250
Recommended length of a tool handle (mm) Operation valve size (mm)
Use a torque wrench. If a torque wrench is
not available, fasten the flare nut manually
first and then tighten it further, using the
left table as a guide.
Do not hold the valve cap area with a spanner.
5) Air tightness test
①
Although outdoor and indoor units themselves have been tested for air tightness at the factory, check the connecting pipes after the installation work for air tightness from the
operation valve’s check joint equipped on the outdoor unit side. While conducting a test, keep the operation valve shut all the time.
a) Raise the pressure to 0.5 MPa, and then stop. Leave it for five minutes to see if the pressure drops.
b) Then raise the pressure to 1.5 MPa, and stop. Leave it for five more minutes to see if the pressure drops.
c) Then raise the pressure to the specified level (4.15 MPa), and record the ambient temperature and the pressure.
d) If no pressure drop is observed with an installation pressurized to the specified level and left for about one day, it is acceptable. When the ambient Temperature fall 1
℃
, the pressure
also fall approximately 0.01 MPa. The pressure, if changed, should be compensated for.
e) If a pressure drop is observed in checking e) and a) – d), a leak exists somewhere. Find a leak by applying bubble test liquid to welded parts and flare joints and repair it. After
repair, conduct an air-tightness test again.
② In conducting an air-tightness test, use nitrogen gas and pressurize the system with nitrogen gas from the gas side. Do not use a medium other than nitrogen gas under any circumstances.
Gas side
operation valve
Check joint
Pressurize
Close
Outdoor unit Indoor unit
＜
Work flow
＞
6) Evacuation
Airtighteness test completed
Fill refrigerant
Vacuum gauge check
Vacuuming completed
Vacuuming begins
Run the vacuum pump for at least one hour after the vacuum
gauge shows -101kPa or lower. (-755mmHg or lower)
Confirm that the vacuum gauge indicator does not rise even if
the system is left for one hour or more.
When the system has remaining moisture
inside or a leaky point, the vacuum gauge
indicator will rise.
Check the system for a leaky point and
then draw air to create a vacuum again.
Cable clamp
INSTALLATION TEST CHECK POINTS
After installation
Check the following points again after completion of the installation, and before turnig on the power. Conduct a test run again and ensure that the unit operates properly.
Explain to the customer how to use the unit and how to take care of the unit following the instruction manual.
Screw
Side cover
(1) Calculate a required refrigerant charge volume from the following table.
In case of faulty wiring connection, the indoor unit stops,
and then the run lamp turns on and the timer lamp blinks.
Use cables for interconnection wiring to avoid loosening of the wires.
CENELEC code for cables Required field cables.
H05RNR4G1.5 (Example) or 245IEC57
H
05
R
N
R
4or5
G
1.5
Harmonized cable type
300/500 volts
Natural-and/or synth. rubber wire insulation
Polychloroprene rubber conductors insulation
Stranded core
Number of conductors
One conductor of the cable is the earth conductor
(yellow/green)
Section of copper wire (mm 2 )
Power cables and connecting wires are securely fixed to the terminal block.
The power supply voltage is correct as the rating.
The drain hose is fixed securely.
Operational valve is fully open.
No gas leaks from the joints of the operational valve.
The pipe joints for indoor and outdoor pipes have been insulated.
The reverse flow check cap is attached.
The cover of the pipe cover (A) faces downward to prevent rain from entering.
Gaps are properly sealed between the pipe covers (A) (B) and the wall surface / pipes.
3) Refrigerant pipe wall thickness and material
● Select refrigerant pipes of the table shown on the right wall thickness and material as specified for each pipe size.
Pipe diameter [mm]
Minimum pipe wall thickness [mm]
Pipe material*
6.35
0.8
O-type pipe
12.7
0.8
O-type pipe
*Phosphorus deoxidized seamless copper pipe ICS 23.040.15, ICS 77.150.30
NOTE
●
Select pipes having a wall thickness larger than the specified minimum pipe thickness.
●
This unit contains factory charged refrigerant covering 15m of refrigerant piping and additional refrigerant charge on the
installation site is not required for an installation with up to 15m refrigerant piping.
When refrigerant piping exceeds 15m, additionally charge an amount calculated from the pipe length and the above table
for the portion in excess of 15m.
●
If an existing pipe system is used, a required refrigerant charge volume will vary depending on the liquid pipe size.
For further information, please see “5. UTILIZATION OF EXISTING PIPING.”
0.02 1.40 15 Model 40, 50, 60
Additional charge volume (kg)
per meter of refrigerant piping
(liquid pipe
φ
6.35)
Refrigerant volume charged
for shipment at the factory
(kg)
Installation’s pipe length (m)
covered without additional
refrigerant charge
NOTE
Put down the refrigerant volume calculated from the pipe length onto the caution label attached on
the back side of the service panel.
(2) Charging refrigerant
● Since R410A refrigerant must be charged in the liquid phase, you should charge it, keeping the container
cylinder upside down or using a refrigerant cylinder equipped with a siphon tube.
●
Charge refrigerant always from the liquid side service port with the operation valve shut. When you find it
difficult to charge a required amount, fully open the outdoor unit valves on both liquid and gas sides and
charge refrigerant from the gas (suction) side service port, while running the unit in the cooling mode. In
doing so, care must be taken so that refrigerant may be discharged from the cylinder in the liquid phase all
the time. When the cylinder valve is throttled down or a dedicated conversion tool to change liquid-phase
refrigerant into mist is used to protect the compressor, however, adjust charge conditions so that
refrigerant will gasify upon entering the unit.
●
In charging refrigerant, always charge a calculated volume by using a scale to measure the charge volume.
●
When refrigerant is charged with the unit being run, complete a charge operation within 30 minutes.
Running the unit with an insufficient quantity of refrigerant for a long time can cause a compressor failure.
Pay attention to the following points in addition to the above for the R410A and compatible machines.
○
To prevent a different oil from entering, assign dedicated tools, etc. to each refrigerant type. Under no circumstances must a
gauge manifold and a charge hose in particular be shared with other refrigerant types (R22, R407C, etc.).
○
Use a counterflow prevention adapter to prevent vacuum pump oil from entering the refrigerant system.
(three-way valve)
Charge hose
(Designed specifically for R410A)
Compound pressure gauge
Pressure gauge
Gauge Manifold
(Designed specifically for R410A)
Handle Hi.
Vacuum pump
Vacuum pump adapter
(Anti-reverse flow type)
(Designed specifically for R410A)
Charge hose
(Designed specifically for R410A)
Check joint
-0.1MPa
(-76cmHg)
Handle Lo
Operation Valve
Operation Valve
(two-way valve)
Operation Valve
Cap
Operation Valve
Cap
tightening torque (N·m)
Operation valve cap
tightening torque (N·m)
Check joint blind nut
φ
6.35 (1/4")
φ
12.7
(1/2")
20
〜
30
10 〜 12
25 〜 35
Operation valve size
(mm)
Securely tighten the operation valve cap and the check joint blind nut after adjustment.
● When condensed water needs to be
led to a drain, etc., install the unit on
a flat base (supplied separately as an
optional part) or concrete blocks.
Then, please secure space for the drain
elbow and the drain hose.
● Execute drain piping by using a drain elbow and drain
grommets supplied separately as optional parts, where
water drained from the outdoor unit is a problem.
● Water may drip where there is a larger amount of drain
water. Seal around the drain elbow and drain grommets
with putty or adequate caulking material.
●
Condensed water may flow out from vicinity of operation
valve or connected pipes.
Do not put a grommet
on this hole.
This is a supplementary
drain hole to discharge
drain water, when a large
quantity of it is gathered.
CAUTION
Clearance
Where you are likely to have several days of sub-zero
temperatures in a row, do not use a drain elbow and
drain grommets. (There is a risk of drain water
freezing inside and blocking the drain.)
●
RWC012A029B
Drain elbow
Grommet
Drain hose
(
To be procured on the installer's part
)
• 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.
• 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 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:
RWC012A029B
Model 40·50·60
• This installation manual deals with outdoor units and general installation specifications only. For indoor units, refer to page 72.
• 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.
SAFETY PRECAUTIONS
WARNING
Strictly prohibited
Observe instructions
with great care
Provide proper earthing
CAUTION WARNING
CAUTION
WARNING
CAUTION
• Carry out the electrical work for ground lead with care.
Do not connect the ground lead to the gas line, water line, lightning conductor or telephone line’s ground lead. Incorrect grounding can cause unit faults such as electric shocks due to short-circuiting.
• 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.
• 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:16A) with a contact
separation of at least 3mm.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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 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.
• 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
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 5m).
• Locations where drainage cannot run off safely.
It can affect surrounding environment and cause a claim.
• 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.
• 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 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 touch any buttons with wet hands.
It can cause electric shocks.
• 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 touch the suction or aluminum fin on the outdoor unit.
This may cause injury.
• Do not put anything on the outdoor unit and operating unit.
This may cause damage the objects or injury due to falling to the
object.
Accessories for outdoor unit
• Model name and power source
• Refrigerant piping length
• Piping, wiring and miscellaneous small parts
• Indoor unit installation manual
Necessary tools for the installation work
Wrench key (Hexagon) [4m/m]
Vacuum pump
Vacuum pump adapter (Anti-reverse flow type)
(Designed specifically for R410A)
Gauge manifold (Designed specifically for R410A)
Charge hose (Designed specifically for R410A)
Flaring tool set (Designed specifically for R410A)
Gas leak detector (Designed specifically for R410A)
Gauge for projection adjustment
(Used when flare is made by using conventional flare tool) 9
10
11
12
13
14
15
16
Plus headed driver
Knife
Saw
Tape measure
Hammer
Spanner wrench
Torque wrench [14.0
~
62.0N·m (1.4
~
6.2kgf·m)]
Hole core drill (65mm in diameter)
1
2
3
4
5
6
7
8
Grommet (Heat pump type only)
Drain elbow (Heat pump type only)
Q’ty
4
1 1
2
Option parts
Sealing plate
Sleeve
Inclination plate
Putty
Drain hose (extension hose)
Piping cover
(for insulation of connection piping)
Q’ty
1
1
1
1
1
1
Check before installation work
a
b
c
d
e
f
R410A REFRIGERANT USED
2. REFRIGERANT PIPING WORK
1) Restrictions on unit installation and use
● Check the following points in light of the indoor unit specifications and the installation site.
●
Observe the following restrictions on unit installation and use. Improper installation can result in a compressor failure or performance degradation.
2) Determination of pipe size
●
Determine refrigerant pipe size pursuant to the following guidelines based on the
indoor unit specifications.
30m or less
20m or less
20m or less
L
H
H
Gas pipe Liquid pipe
φ
12.7
φ
6.35
Flare Flare
φ
12.7
φ
6.35
φ
12.7
φ
6.35
Notabilia as a unit designed for R410A
●
Do not use any refrigerant other than R410A. R410A will rise to pressure about 1.6 times higher than that of a conventional refrigerant.
A cylinder containing R410A has a pink indication mark on the top.
● A unit designed for R410A has adopted a different size indoor unit operation 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 R410A 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 R410A. Check connectable indoor unit models in a catalog, etc. (A wrong indoor unit, if connected into the system, will impair proper system operation)
1. HAULAGE AND INSTALLATION
(Take particular care in carrying in or moving the unit, and always perform such an operation with two or more persons.)
② Notabilia for installation
Intake
The height of a wall is 1200mm or less.
(
service
space
)
Intake
Outlet
Fasten with bolts
(M10-12)
Use a thicker block to anchor deeper.
Use a long block to
extend the width.
CAUTION
When a unit is hoisted with slings for haulage, take into consideration the offset of its gravity
center position. If not properly balanced, the unit can be thrown off-balance and fall.
1) Delivery
●
Deliver the unit as close as possible to the installation site before removing it from
the packaging.
● When you have to unpack the unit for a compelling reason before you haul it to the
installation point, hoist the unit with nylon slings or ropes and protection pads so that
you may not damage the unit.
2) Portage
● 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.
3) Selection of installation location for the outdoor unit
Be sure to select a suitable installation place in consideration of following conditions.
〇
A place where it is horizontal, stable and can endure the unit weight and will not allow vibration transmittance
of the unit.
〇 A place where it can be free from possibility of bothering neighbors due to noise or exhaust air from the unit.
〇
A place where the unit is not exposed to oil splashes.
〇 A place where it can be free from danger of flammable gas leakage.
〇
A place where drain water can be disposed without any trouble.
〇 A place where the unit will not be affected by heat radiation from other heat source.
〇 A place where snow will not accumulate.
〇 A place where the unit can be kept away 5m or more from TV set and/or radio receiver in order to avoid any
radio or TV interference.
〇
A place where good air circulation can be secured, and enough service space can be secured for maintenance
and service of the unit safely.
〇
A place where the unit will not be affected by electromagnetic waves and/or high-harmonic waves generated by
other equipment.
〇 A place where chemical substances like sulfuric gas, chloric gas, acid and alkali (including ammonia), which can
harm the unit, will not be generated and not remain.
〇
at a place where it is not influenced by natural wind.
〇 A place where strong wind will not blow against the outlet air blow of the unit.
5) Installation space
● Walls surrounding the unit in the four sides are not acceptable.
●
There must be a 1-meter or larger space in the above.
● When more than one unit are installed side by side, provide a 250mm or wider interval between them as a service
space. In order to facilitate servicing of controllers, please provide a sufficient space between units so that their
top plates can be removed easily.
● Where a danger of short-circuiting exists, install guide louvers.
● When more than one unit are installed, provide sufficient intake space consciously so that short-circuiting may not occur.
● Where piling snow can bury the outdoor unit, provide proper snow guards.
L
3
L
2
L
4
L
1
Model 40, 50, 60
Example installation
Size
L1
L2
L3
L4
Ⅰ
Open
100
100
250
Ⅱ
280
75
80
Open
Ⅲ
280
Open
80
250
Ⅳ
180
Open
80
Open
（mm）
① Anchor bolt fixed position
● In installing the unit, fix the unit’s legs with bolts specified on the left.
● The protrusion of an anchor bolt on the front side must be kept within 15 mm.
● 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 5 mm or less.)
Improper installation can result in a compressor failure, broken piping within the unit and abnormal noise generation.
Heavy
6) Installation
L
H
Outdoor unit
Indoor unit
CAUTION
●
The use restrictions appearing in the table above are applicable to the standard pipe size combinations shown in the table below.
Where an existing pipe system is utilized, different one-way pipe length restrictions should apply depending on its pipe size.
For more information, please see “ 5. UTILIZATION OF EXISTING PIPING.”
Restrictions Dimensional restrictions
Marks appearing in the drawing on the right
Main pipe length
When the outdoor unit is positioned higher,
When the outdoor unit is positioned lower,
Elevation difference between
indoor and outdoor units
Outdoor unit connected
Refrigerant piping (branch pipeL)
Indoor unit connected
Plug the end of the pipe with tape, or other
material, and fill the pipe with nitrogen gas.
Only use nitrogen gas (N
2
)
Taping
＜
N
2
＞
Nitrogen
Brazing
Station valve
Primary side Secondary side
0.5MPa
Hand
Relief valve
Nitrogen
gas
Brazing must be performed under a nitrogen gas flow.
Without nitrogen gas, a large quantity of foreign matters (oxidized film) are created,
causing a critical failure from capillary tube or expansion valve clogging.
About brazing
When pipe is brazing.
Pad
Model 40, 50, 60
Intake
Outlet
312.5
24.3
14.8
288.7
88.4 510 200
351.6
4) Caution about selection of installation location
(1) If the unit is installed in the area where the snow will accumulate, following measures are required.
The bottom plate of unit and intake, outlet may be blocked by snow.
1 Install the unit on the base so
that the bottom is higher than
snow cover surface.
2 Provide a snow hood to
the outdoor unit on site.
3 Install the unit under eaves
or provide the roof on site.
(2) If the unit can be affected by strong wind, following measures are required.
Strong wind can cause damage of fan (fan motor), or can cause performance degradation, or can trigger
anomalous stop of the unit due to rising of high pressure.
Since drain water generated by defrost control may freeze, following measures are required.
● Don’t execute drain piping work by using a drain elbow and drain grommets (optional parts). [Refer to Drain
piping work.]
●
Recommend setting Defrost Control (SW3-1) and Snow Guard Fan Control (SW3-2). [Refer to Setting SW3-1,
SW3-2.]
1. Install the outlet air blow side of the unit to face a
wall of building, or provide a fence or a windbreak screen.
Wind direction
Wind direction
2.Install the outlet air blow side of the unit in a position
perpendicular to the direction of wind.
Over 500mm
Regarding outline of a snow
hood, refer to our technical
manual.