Mitsubishi CITY MULTI PURY-EM-YNW-A1(-BS) Series User manual

For use with R32
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INSTALLATION MANUAL
For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit.
INSTALLATIONSHANDBUCH
Zum sicheren und ordnungsgemäßen Gebrauch der Klimageräte das Installationshandbuch gründlich durchlesen.
MANUEL D’INSTALLATION
Veuillez lire le manuel d’installation en entier avant d’installer ce climatiseur pour éviter tout accident et vous assurer d’une utilisation correcte.
MANUAL DE INSTALACIÓN
Para un uso seguro y correcto, lea detalladamente este manual de instalación antes de montar la unidad de aire acondicionado.
MANUALE DI INSTALLAZIONE
Per un uso sicuro e corretto, leggere attentamente questo manuale di installazione prima di installare il condizionatore d’aria.
INSTALLATIEHANDLEIDING
Voor een veilig en juist gebruik moet u deze installatiehandleiding grondig doorlezen voordat u de airconditioner installeert.
MANUAL DE INSTALAÇÃO
Para segurança e utilização correctas, leia atentamente este manual de instalação antes de instalar a unidade de ar condicionado.






安装手册
为了安全和正确地使用本空调器，请在安装前仔细阅读本安装手册。


NÁVOD NA INŠTALÁCIU







INSTALLATIONSHANDBOK







INSTALLATIONSMANUAL
Læs venligst denne installationsmanual grundigt, før De installerer airconditionanlægget, af hensyn til sikker og korrekt anvendelse.
INSTALLASJONSHÅNDBOK
For sikker og riktig bruk, skal du lese denne installasjonshåndboken nøye før du installerer klimaanlegget.
Air-Conditioners For Building Application
OUTDOOR UNIT
PURY-M-YNW-A1(-BS)
PURY-EM-YNW-A1(-BS)


CONTENTS
1. Safety precautions ················································································ 2
1-1. General precautions...............................................................................................................2
1-2. Precautions for transporting the unit......................................................................................4
1-3. Precautions for unit installation..............................................................................................4
1-4. Precautions for piping work....................................................................................................5
1-5. Precautions for electrical wiring .............................................................................................6
1-6. Precautions for relocating or repairing the unit ......................................................................7
1-7. Additional precautions............................................................................................................7
2. About the product ················································································10
3. Combination of outdoor units ································································ 11
4. Specifications······················································································12
5. Package contents·················································································13
6. Transporting the unit ············································································14
7. Installation location ··············································································15
7-1. Single unit installation ..........................................................................................................17
7-2. Multiple unit installation........................................................................................................18
8. Foundation work ··················································································20
9. Refrigerant piping work ········································································22
9-1. Restrictions ..........................................................................................................................22
9-2. Pipe selection.......................................................................................................................23
9-3. Twinning kit selection ...........................................................................................................23
9-4. Pipe connection example.....................................................................................................24
9-5. Piping connections and valve operations ............................................................................29
9-6. Air-tightness test ..................................................................................................................32
9-7. Thermal insulation for pipes.................................................................................................33
9-8. Evacuation of the system.....................................................................................................35
9-9. Additional refrigerant charge................................................................................................36
10. Electrical work ···················································································41
10-1. Before electrical work.........................................................................................................41
10-2. Power cables and device capacity.....................................................................................41
10-3. Control cable specifications ...............................................................................................44
10-4. System configuration .........................................................................................................44
10-5. Wiring connections in the control box ................................................................................48
10-6. Address setting ..................................................................................................................53
11. Test run ·····························································································54
11-1. Before a test run.................................................................................................................54
11-2. Function setting..................................................................................................................55
11-3. Operation characteristics in relation to the refrigerant charge ...........................................56
11-4. Operation check .................................................................................................................56
12. Inspection and maintenance ································································57
13. Rating plate information ······································································58
1
WT09050X01
en

1. Safety precautions
►Read and observe the safety precautions below and the instructions provided on the
labels affixed to the unit.
►Retain this manual for future reference. Make sure that this manual is passed on to the
end users.
►All refrigerant piping work, electrical work, air-tightness test, and brazing work must be
performed by qualified personnel.
►Incorrect use may result in serious injury.
: indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
: indicates a hazardous situation which, if not avoided, could result in
minor or moderate injury.
: addresses practices not related to personal injury, such as product
and/or property damage.
1-1. General precautions
Do not use any refrigerant other than the type indicated in the manuals for the unit and on
the nameplate.
- Doing so will cause the unit or pipes to burst, or result in an explosion or fire during use, during
repairs, or at the time of disposal of the unit.
- It may also be in violation of applicable laws.
- MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for malfunctions or
accidents resulting from the use of the wrong type of refrigerant.
Do not use the unit in an unusual environment.
- If the unit is used in areas exposed to large amounts of oil, steam, organic solvents, or corrosive
gases (such as ammonia, sulfuric compounds, or acids), or areas where acidic/alkaline solutions
or special chemical sprays are used frequently, it may significantly reduce the performance and
corrode the internal parts, resulting in refrigerant leakage, water leakage, injury, electric shock,
malfunction, smoke, or fire.
Do not change the settings of the safety or protection devices.
- Forcing the unit to operate by disabling the safety devices, such as the pressure switch or the
thermal switch, may result in bursting, fire, or explosion.
- Operating the unit with a safety device whose settings have been changed may result in
bursting, fire, or explosion.
- Using safety devices other than those specified by Mitsubishi Electric may result in bursting, fire,
or explosion.
Do not alter or modify the unit.
- Doing so will result in refrigerant leakage, water leakage, serious injury, electric shock, or fire.
Do not wet the electrical parts.
- Doing so may result in current leakage, electric shock, malfunction, or fire.
Do not touch the electrical parts, switches, or buttons with wet fingers.
- Doing so may result in electric shock, malfunction, or fire.
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WT09050X01

Do not touch the refrigerant pipes and refrigerant line components with bare hands during
and immediately after operation.
- The refrigerant in the pipes will be very hot or very cold, resulting in frostbite or burns.
Do not touch the electrical parts with bare hands during and immediately after operation.
- Doing so may result in burns.
Ventilate the room while servicing the unit.
- If the refrigerant leaks, oxygen deficiency may result. If the leaked refrigerant comes in contact
with a heat source, toxic gas will be generated.
If you notice any abnormality (e.g., a burning smell), stop the operation, turn off the power
switch, and consult your dealer.
- Continuing the operation may result in electric shock, malfunction, or fire.
Properly install all required covers and panels on the terminal box and the control box.
- If dust or water enters the unit, this may result in electric shock or fire.
Periodically check the unit base for damage.
- If the damage is left uncorrected, the unit will fall and cause serious injury.
Consult your dealer for the proper disposal of the unit.
- The refrigerant oil and the refrigerant in the unit will pose a risk of environmental pollution, fire,
or explosion.
Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
The unit shall be stored in a room without continuously operating ignition sources (for
example: open flames, an operating gas appliance or an operating electric heater.)
Do not pierce or burn.
Be aware that refrigerants may not contain an odour.
The unit shall be stored in a space where any possible leakage of refrigerant will not
accumulate.
When installing an HBC controller, take safety measures in accordance with the European
Standard, based on the system refrigerant amount and the room volume as shown in the
figure below. (The installation restrictions can be simply found by using the flowchart
provided on a separate sheet.)
0
10
20
30
40
50
60
70
80
0 50 100 150 200 250 300 350 400 450 500 550 600 650
The unit shall be properly stored to prevent mechanical damage.
At least two safety
measures are
required.
Room volume [m3]
SyStem refrigerant amount [kg]
NG (ISO 5149)
At least one safety
measure is required.
Construction guidance
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Children should be supervised to ensure that they do not play with the appliance.
Do not operate the unit with the panels and guards removed.
- Rotating, hot, or high-voltage parts may cause injury, electric shock, or fire.
Do not touch fans, heat exchanger fins, or the sharp edges of components with bare
hands.
- Doing so may result in injury.
Wear protective gloves when working on the unit.
- Failure to do so may result in injury.
- High-pressure pipes poses a risk of burns if touched with bare hands while the unit is in
operation.
Check that markings of the unit are not illegible.
- Illegible warning or caution markings may cause damage to the unit, resulting in injury.
1-2. Precautions for transporting the unit
When lifting the unit, pass the slings through the four designated sling holes.
- Improper lifting will cause the unit to topple or fall, resulting in serious injury.
Do not lift the unit with the PP bands that are used on some products.
- Doing so may result in injury.
Observe the restrictions on the maximum weight that a person can lift, which is specified
in local regulations.
- Failure to do so may result in injury.
1-3. Precautions for unit installation
Do not install the unit where combustible gas may leak.
- If combustible gas accumulates around the unit, fire or explosion may result.
Do not allow children to play with the packing materials.
- Suffocation or serious injury may result.
Cut up the packing materials before disposal.
All installation work must be performed by qualified personnel in accordance with this
manual.
- Improper installation may result in refrigerant leakage, water leakage, serious injury, electric
shock, or fire.
If the air conditioner is installed in a small room, take measures to prevent the refrigerant
concentration from exceeding the safety limit in the event of refrigerant leakage.
- Consult your dealer regarding the appropriate measures to prevent the allowable concentration
from being exceeded. If the refrigerant leaks and the allowable concentration is exceeded,
hazards due to a lack of oxygen in the room will result.
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Install the unit in accordance with the instructions to minimize the risk of damage from
earthquakes and strong winds.
- Improper installation will cause the unit to topple, resulting in serious injury.
The unit must be securely installed on a structure that can sustain its weight.
- Failure to do so will cause the unit to fall, resulting in serious injury.
Do not open the control box cover when charging refrigerant.
- Doing so may cause sparks, resulting in fire.
Seal all openings around pipes and wires to keep out small animals, rainwater, or snow.
- Failure to do so may result in current leakage, electric shock, or damage to the unit.
Do not install the unit where corrosive gas may be generated.
- Doing so can corrode the pipes, resulting in refrigerant leakage and fire.
Outdoor unit with salt-resistant specification is recommended to use in a place where it is
subject to salt air.
Even when the unit with salt-resistant specification is used, it is not completely protected
against corrosion.
Salt-resistant unit is resistant to salt corrosion, but not salt-proof.
Install the salt-resistant unit out of direct exposure to sea breeze, and minimize the
exposure to salt water mist.
Periodically wash salt deposits off the unit, especially when the unit is installed in a
coastal area.
Periodically check the unit, and apply anti-rust agent and replace corroded parts as
necessary.
1-4. Precautions for piping work
Piping work shall be kept to a minimum.
The pipes shall be protected from physical damage.
Before heating the brazed sections, remove the gas and oil that are trapped in the pipes.
- Failure to do so may generate fire, resulting in serious injury.
Do not purge the air using refrigerant. Use a vacuum pump to evacuate the system.
- Residual gas in the refrigerant lines will cause bursting of the pipes or an explosion.
Do not use oxygen, flammable gas, or a refrigerant containing chlorine for air-tightness
testing.
- Doing so may result in an explosion. Chlorine will deteriorate the refrigerant oil.
When installing or relocating the unit, do not allow air or any substance other than the
specified refrigerant to enter the refrigerant lines.
- Any substance other than the specified refrigerant may cause abnormally high pressure in the
refrigerant lines, resulting in bursting of the pipes or an explosion.
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After the installation has been completed, check for refrigerant leaks.
- If the refrigerant leaks, oxygen starvation may result. If the leaked refrigerant comes in contact
with a heat source, toxic gas will be generated.
Have a fire extinguisher nearby before brazing work.
- If the refrigerant leaks while brazing work is being performed, fire may result.
Provide no-smoking signs at the brazing workplace.
- If the refrigerant leaks when an ignition source is present, fire may result.
1-5. Precautions for electrical wiring
Include some slack in the power cables.
- Failure to do so may break or overheat the cables, resulting in smoke or fire.
Connections must be made securely and without tension on the terminals.
- Improperly connected cables may break, overheat, or cause smoke or fire.
Tighten all terminal screws to the specified torque.
- Loose screws and contact failure may result in smoke or fire.
Electrical work must be performed by qualified personnel in accordance with local
regulations and the instructions provided in this manual. Only use the specified cables and
dedicated circuits.
- Inadequate power source capacity or improper electrical work will result in electric shock,
malfunction, or fire.
Install an inverter circuit breaker on the power supply of each unit.
- Failure to do so may result in electric shock or fire.
Only use properly rated breakers (an earth leakage breaker, local switch <a switch + fuse
that meets local electrical codes>, or overcurrent breaker).
- Failure to do so may result in electric shock, malfunction, smoke, or fire.
Only use standard power cables of sufficient capacity.
- Failure to do so may result in current leakage, overheating, smoke, or fire.
Proper grounding must be provided by qualified personnel.
- Improper grounding may result in electric shock, fire, explosion, or malfunction due to electrical
noise. Do not connect the ground wire to gas or water pipes, lightning rods, or telephone ground
wires.
When air flow decrease is detected of a circulation fan beside the HBC controller installed
at the height of less than 1.8 m from the ground, the system must be powered off within 10
seconds from the detection. Before powering off the system, connect the contactor to the
power cable of the outdoor unit and open the contactor.
After the wiring work has been completed, measure the insulation resistance, and make
sure that it reads at least 1 MΩ.
- Failure to do so may result in electric leakage, malfunction, or fire.
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1-6. Precautions for relocating or repairing the unit
Only qualified personnel must relocate or repair the unit. Do not attempt to disassemble or
alter the unit.
- Failure to do so will result in refrigerant leakage, water leakage, serious injury, electric shock, or
fire.
Do not service the unit in the rain.
- Doing so may result in electric leakage, electric shock, wire shorting, malfunction, smoke, or fire.
Check for refrigerant leaks before service.
- If the refrigerant leaks, fire may result.
Do not open the control box cover when recovering, charging, or purging refrigerant.
- Doing so may cause sparks, resulting in fire.
1-7. Additional precautions
Do not turn off the power immediately after stopping operation.
- Wait for at least five minutes after the unit has stopped before turning off the power. Failure to do
so may result in drain water leakage or the mechanical failure of sensitive parts.
The unit must be periodically inspected by a dealer or qualified personnel.
- If dust or dirt accumulates inside the unit, the drain pipes may become clogged, and water
leakage from the pipes may wet the surroundings and generate odours.
Turn on the power at least 12 hours before starting operation. Keep the power turned on
throughout the operating season.
- Insufficient energizing will result in malfunction.
Do not use the air conditioner for special purposes (e.g. keeping food, animals, plants,
precision devices, or art objects in a room).
- Such items could be damaged or deteriorated.
Collect the refrigerant and properly dispose of it in accordance with local regulations.
Do not install the unit on or over items that are subject to water damage.
- When the room humidity exceeds 80% or if the drain pipe is clogged, condensation may collect
and drip from the indoor unit onto the ceiling or floor.
Drain piping must be installed by a dealer or qualified personnel to ensure proper
drainage.
- Improper drain piping may cause water leakage, resulting in damage to furniture and other
surroundings.
Take appropriate measures against electrical noise interference when installing the unit in
hospitals or radio communication facilities.
- Inverter, high-frequency medical, or wireless communication equipment as well as power
generators may cause the air conditioning system to malfunction. The air conditioning system
may also adversely affect the operation of these types of equipment by creating electrical noise.
Insulate pipes to prevent condensation.
- Condensation may collect and drip from the unit onto the ceiling or floor.
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Keep the service valves closed until refrigerant charging is completed.
- Failure to do so will damage the unit.
Place a wet towel on the service valves before brazing the pipes to keep the temperature of
the valves from rising above 120ºC (248ºF).
- Failure to do so may result in equipment damage.
Keep the flame out of contact with the cables and metal sheet when brazing the pipes.
- Failure to do so may result in burnout or malfunction.
Use the following tools specifically designed for use with the specified refrigerant: Gauge
manifold, charge hose, gas leak detector, check valve, refrigerant charge base, vacuum
gauge, and refrigerant recovery equipment.
- Gas leak detectors for conventional refrigerants will not react to a refrigerant that does not
contain chlorine.
- If the specified refrigerant is mixed with water, refrigerant oil, or another refrigerant, the
refrigerant oil will deteriorate and the compressor will malfunction.
Use a vacuum pump with a check valve.
- If the vacuum pump oil flows back into the refrigerant lines, the refrigerant oil may deteriorate
and the compressor may malfunction.
Keep tools clean.
- If dust, dirt, or water accumulates on the charging hose or the flare processing tool, the
refrigerant will deteriorate and the compressor will malfunction.
Use refrigerant piping made of phosphorus deoxidized copper (copper and copper alloy
seamless pipes) that meets local requirements. Pipe joints should also meet local
requirements. Keep the inner and outer surfaces of the pipes clean and free of sulphur,
oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminants.
- Contaminants on the inside of the refrigerant piping will cause the refrigerant oil to deteriorate
and cause the compressor to malfunction.
Store pipes indoors, and keep both ends of the pipes sealed until just before making a
flare connection or brazing. (Store elbows and other joints in plastic bags.)
- If dust, dirt, or water enters the refrigerant lines, the refrigerant oil will deteriorate and the
compressor will malfunction.
Braze the pipes with a nitrogen purge to avoid oxidation.
- Oxidized flux inside the refrigerant pipes will cause the refrigerant oil to deteriorate and cause
the compressor to malfunction.
Do not use existing refrigerant piping.
- The old refrigerant and refrigerant oil in the existing piping contain a large amount of chlorine,
which will cause the refrigerant oil in the new unit to deteriorate and cause the compressor to
malfunction.
Charge refrigerant in a liquid state.
- Charging refrigerant in the gaseous state will change the composition of the refrigerant and lead
to a performance drop.
Do not use a charging cylinder when charging refrigerant.
- The use of a charging cylinder may change the composition of the refrigerant and lead to a
performance drop.
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