Air-Conditioners
PUMY-P100, P125, P140YHMB
INSTALLATION MANUAL |
FOR INSTALLER |
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For safe and correct use, read this manual and the indoor unit installation manual thoroughly before installing the air-conditioner unit.
INSTALLATIONSHANDBUCH |
FÜR INSTALLATEURE |
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Aus Sicherheitsgründen und zur richtigen Verwendung vor der Installation die vorliegende Bedienungsanleitung und die Installationsanleitung der Innenanlage gründlich durchlesen die Klimaanlage.
MANUEL D’INSTALLATION |
POUR L’INSTALLATEUR |
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Avant d’installer le climatiseur, lire attentivement ce manuel, ainsi que le manuel d’installation de l’appareil intérieur pour une utilisation sûre et correcte.
INSTALLATIEHANDLEIDING |
VOOR DE INSTALLATEUR |
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Lees deze handleiding en de installatiehandleiding van het binnenapparaat zorgvuldig door voordat u met het installeren van de airconditioner begint.
MANUAL DE INSTALACIÓN |
PARA EL INSTALADOR |
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Para un uso correcto y seguro, lea detalladamente este manual y el manual de instalación de la unidad interior antes de instalar la unidad de aire acondicionado.
MANUALE DI INSTALLAZIONE |
PER L’INSTALLATORE |
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Per un uso sicuro e corretto, leggere attentamente il presente manuale ed il manuale d’installazione dell’unità interna prima di installare il condizionatore d’aria.
EΓΧEIPIΔIO OΔHΓIΩN EΓKATAΣTAΣHΣ ΓΙΑ ΑΥΤΟΝ ΠΟΥ ΚΑΝΕΙ ΤΗΝ ΕΓΚΑΤΑΣΤΑΣΗ
Για σωστή και ασφαλή χρήση, διαβάστε προσεκτικά αυτό το εγχειρίδιο καθώς και το εγχειρίδιο εγκατάστασης της εσωτερικής μονάδας, προτού εγκαταστήσετε τη μονάδα του κλιματιστικού.
MANUAL DE INSTALAÇÃO |
PARA O INSTALADOR |
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Para uma utilização segura e correcta, leia atentamente este manual e o manual de instalação da unidade interior antes de instalar o aparelho de ar condicionado.
INSTALLATIONSMANUAL |
TIL INSTALLATØREN |
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Læs af sikkerhedshensyn denne manual samt manualen til installation af indendørsenheden grundigt, før du installerer klimaanlægget.
INSTALLATIONSMANUAL |
FÖR INSTALLATÖREN |
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Läs bruksanvisningen och inomhusenhetens installationshandbok noga innan luftkonditioneringen installeras så att den används på ett säkert och korrekt sätt.
MONTAJ ELKİTABI |
MONTÖR İÇİN |
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Emniyetli ve doğru kullanım için, klima cihazını monte etmeden önce bu kılavuzu ve iç ünite montaj kılavuzunu tamamıyla okuyun.
РУКОВОДСТВО ПО УСТАНОВКЕ |
ДЛЯ УСТАНОВИТЕЛЯ |
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Для обеспечения безопасной и надлежащей эксплуатации внимательно прочтите данное руководство и руководство по установке внутреннего прибора перед установкой кондиционера.
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(SC)
Contents
1. |
Safety precautions..................................................................................... |
2 |
5. |
Drainage piping work |
.................................................................................9 |
2. |
Installation location.................................................................................... |
4 |
6. |
Electrical work ........................................................................................... |
9 |
3. |
Installing the outdoor unit .......................................................................... |
6 |
7. |
Test run.................................................................................................... |
12 |
4. |
Installing the refrigerant piping .................................................................. |
6 |
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Note: This symbol mark is for EU countries only.
This symbol mark is according to the directive 2002/96/EC Article 10 Information for users and Annex IV.
Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality materials and components which can be recycled and reused. This symbol means that electrical and electronic equipment, at their end-of-life, should be disposed of separately from your household waste. Please, dispose of this equipment at your local community waste collection/recycling centre.
In the European Union there are separate collection systems for used electrical and electronic product. Please, help us to conserve the environment we live in!
Caution:
•Do not vent R410A into the Atmosphere:
•R410A is a Fluorinated Greenhouse gas, covered by the Kyoto Protocol, with a Global Warming Potential (GWP)=1975.
Confirmation of parts attached
In addition to this manual, the following parts are supplied with the outdoor unit.
They are used for grounding the S terminals of transmission terminal blocks TB3, TB7. For details refer to “6. Electrical work”.
Grounding lead wire (× 2)
1. Safety precautions
►Before installing the unit, make sure you read all the “Safety precautions”.
►Please report to or take consent by the supply authority before connection to the system.
Warning:
Describes precautions that must be observed to prevent danger of injury or death to the user.
Caution:
Describes precautions that must be observed to prevent damage to the unit.
After installation work has been completed, explain the “Safety Precautions,” use, and maintenance of the unit to the customer according to the information in the Operation Manual and perform the test run to ensure normal operation. Both the Installation Manual and Operation Manual must be given to the user for keeping. These manuals must be passed on to subsequent users.
: Indicates a part which must be grounded.
Warning:
Carefully read the labels affixed to the main unit.
Warning:
•The unit must not be installed by the user. Ask a dealer or an authorized technician to install the unit. If the unit is installed incorrectly, water leakage, electric shock, or fire may result.
•For installation work, follow the instructions in the Installation Manual and use tools and pipe components specifically made for use with R410A refrigerant. The R410A refrigerant in the HFC system is pressurized 1.6 times the pressure of usual refrigerants. If pipe components not designed for R410A refrigerant are used and the unit is not installed correctly, the pipes may burst and cause damage or injuries. In addition, water leakage, electric shock, or fire may result.
•The unit must be installed according to the instructions in order to minimize the risk of damage from earthquakes, typhoons, or strong winds. An incorrectly installed unit may fall down and cause damage or injuries.
•The unit must be securely installed on a structure that can sustain its weight. If the unit is mounted on an unstable structure, it may fall down and cause damage or injuries.
•If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration in the room from exceeding the safety limit in the event of refrigerant leakage. Consult a dealer regarding the appropriate measures to prevent the allowable concentration from being exceeded. Should the refrigerant leak and cause the concentration limit to be exceeded, hazards due to lack of oxygen in the room may result.
•Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released.
•All electric work must be performed by a qualified technician according to local regulations and the instructions given in this manual. The units must be powered by dedicated power lines and the correct voltage and circuit breakers must be used. Power lines with insufficient capacity or incorrect electrical work may result in electric shock or fire.
•Use C1220 copper phosphorus, for copper and copper alloy seamless pipes, to connect the refrigerant pipes. If the pipes are not connected correctly, the unit will not be properly grounded and electric shock may result.
•Use only specified cables for wiring. The wiring connections must be made securely with no tension applied on the terminal connections. Also, never splice the cables for wiring (unless otherwise indicated in this document).
Failure to observe these instructions may result in overheating or a fire.
•The terminal block cover panel of the outdoor unit must be firmly attached. If the cover panel is mounted incorrectly and dust and moisture enter the unit, electric shock or fire may result.
•When installing or relocating, or servicing the air conditioner, use only the specified refrigerant (R410A) to charge the refrigerant lines. Do not mix it with any other refrigerant and do not allow air to remain in the lines.
If air is mixed with the refrigerant, then it can be the cause of abnormal high pressure in the refrigerant line, and may result in an explosion and other hazards.
The use of any refrigerant other than that specified for the system will cause mechanical failure or system malfunction or unit breakdown. In the worst case, this could lead to a serious impediment to securing product safety.
•Use only accessories authorized by Mitsubishi Electric and ask a dealer or an authorized technician to install them. If accessories are incorrectly installed, water leakage, electric shock, or fire may result.
•Do not alter the unit. Consult a dealer for repairs. If alterations or repairs are not performed correctly, water leakage, electric shock, or fire may result.
•The user should never attempt to repair the unit or transfer it to another location. If the unit is installed incorrectly, water leakage, electric shock, or fire may result. If the air conditioner must be repaired or moved, ask a dealer or an authorized technician.
•After installation has been completed, check for refrigerant leaks. If refrigerant leaks into the room and comes into contact with the flame of a heater or portable cooking range, poisonous gases will be released.
2
1. Safety precautions
1.1. Before installation
Caution:
•Do not use the unit in an unusual environment. If the air conditioner is installed in areas exposed to steam, volatile oil (including machine oil), or sulfuric gas, areas exposed to high salt content such as the seaside, or areas where the unit will be covered by snow, the performance can be significantly reduced and the internal parts can be damaged.
•Do not install the unit where combustible gases may leak, be produced, flow, or accumulate. If combustible gas accumulates around the unit, fire or explosion may result.
•The outdoor unit produces condensation during the heating operation. Make sure to provide drainage around the outdoor unit if such condensation is likely to cause damage.
•When installing the unit in a hospital or communications office, be prepared for noise and electronic interference. Inverters, home appliances, high-frequency medical equipment, and radio communications equipment can cause the air conditioner to malfunction or breakdown. The air conditioner may also affect medical equipment, disturbing medical care, and communications equipment, harming the screen display quality.
1.2. Before installation (relocation)
Caution:
•Be extremely careful when transporting the units. Two or more persons are needed to handle the unit, as it weighs 20 kg or more. Do not grasp the packaging bands. Wear protective gloves to remove the unit from the packaging and to move it, as you can injure your hands on the fins or other parts.
•Be sure to safely dispose of the packaging materials. Packaging materials, such as nails and other metal or wooden parts may cause stabs or other injuries.
•The base and attachments of the outdoor unit must be periodically checked for looseness, cracks or other damage. If such defects are left uncorrected, the unit may fall down and cause damage or injuries.
•Do not clean the air conditioner unit with water. Electric shock may result.
•Tighten all flare nuts to specification using a torque wrench. If tightened too much, the flare nut can break after an extended period and refrigerant can leak out.
1.3. Before electric work
Caution:
•Be sure to install circuit breakers. If not installed, electric shock may result.
•For the power lines, use standard cables of sufficient capacity. Otherwise, a short circuit, overheating, or fire may result.
•When installing the power lines, do not apply tension to the cables. If the connections are loosened, the cables can snap or break and overheating or fire may result.
•Be sure to ground the unit. Do not connect the ground wire to gas or water pipes, lighting rods, or telephone grounding lines. If the unit is not properly grounded, electric shock may result.
•Use circuit breakers (ground fault interrupter, isolating switch (+B fuse), and molded case circuit breaker) with the specified capacity. If the circuit breaker capacity is larger than the specified capacity, breakdown or fire may result.
1.4. Before starting the test run
Caution:
•Turn on the main power switch more than 12 hours before starting operation. Starting operation just after turning on the power switch can severely damage the internal parts. Keep the main power switch turned on during the operation season.
•Before starting operation, check that all panels, guards and other protective parts are correctly installed. Rotating, hot, or high voltage parts can cause injuries.
•Do not touch any switch with wet hands. Electric shock may result.
•Do not touch the refrigerant pipes with bare hands during operation. The refrigerant pipes are hot or cold depending on the condition of the flowing refrigerant. If you touch the pipes, burns or frostbite may result.
•After stopping operation, be sure to wait at least five minutes before turning off the main power switch. Otherwise, water leakage or breakdown may result.
1.5. Using R410A refrigerant air conditioners
Caution:
•Use C1220 copper phosphorus, for copper and copper alloy seamless pipes, to connect the refrigerant pipes. Make sure the insides of the pipes are clean and do not contain any harmful contaminants such as sulfuric compounds,
oxidants, debris, or dust. Use pipes with the specified thickness. (Refer to page 6) Note the following if reusing existing pipes that carried R22 refrigerant.
-Replace the existing flare nuts and flare the flared sections again.
-Do not use thin pipes. (Refer to page 6)
•Store the pipes to be used during installation indoors and keep both ends of the pipes sealed until just before brazing. (Leave elbow joints, etc. in their packaging.) If dust, debris, or moisture enters the refrigerant lines, oil deterioration or compressor breakdown may result.
•Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration oil applied to the flared sections. If mineral oil is mixed in the refrigeration oil, oil deterioration may result.
•Do not use refrigerant other than R410A refrigerant. If another refrigerant is used, the chlorine will cause the oil to deteriorate.
•Use the following tools specifically designed for use with R410A refrigerant. The following tools are necessary to use R410A refrigerant. Contact your nearest dealer for any questions.
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Tools (for R410A) |
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Gauge manifold |
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Flare tool |
Charge hose |
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Size adjustment gauge |
Gas leak detector |
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Vacuum pump adapter |
Torque wrench |
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Electronic refrigerant charging scale |
•Be sure to use the correct tools. If dust, debris, or moisture enters the refrigerant lines, refrigeration oil deterioration may result.
•Do not use a charging cylinder. If a charging cylinder is used, the composition of the refrigerant will change and the efficiency will be lowered.
3
2. Installation location
330+30 |
(mm) |
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950 |
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1350
175 |
600 |
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370
Fig. 2-1
Table 3 PWFY unit specifications
Model |
PWFY-P100VM-E-AU |
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Temp. range of |
Outdoor temp. |
–15 to 21°C (DB), –15 to 15°C (WB) |
Heating |
Inlet Water temp. |
10 to 45°C |
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Temp. range of |
Outdoor temp. |
– |
Cooling |
Inlet Water temp. |
– |
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SW1
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
ON
SW4
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
ON
Fig. 2-2
2.1. Refrigerant pipe
Refer to Fig. 4-1.
2.2. Choosing the outdoor unit installation location
•Avoid locations exposed to direct sunlight or other sources of heat.
•Select a location from which noise emitted by the unit will not inconvenience neighbors.
•Select a location permitting easy wiring and pipe access to the power source and indoor unit.
•Avoid locations where combustible gases may leak, be produced, flow, or accumulate.
•Note that water may drain from the unit during operation.
•Select a level location that can bear the weight and vibration of the unit.
•Avoid locations where the unit can be covered by snow. In areas where heavy snow fall is anticipated, special precautions such as raising the installation location or installing a hood on the air intake must be taken to prevent the snow from blocking the air intake or blowing directly against it. This can reduce the airflow and a malfunction may result.
•Avoid locations exposed to oil, steam, or sulfuric gas.
•Use the transportation handles of the outdoor unit to transport the unit. If the unit is carried from the bottom, hands or fingers may be pinched.
2.3. Outline dimensions (Outdoor unit) (Fig. 2-1)
Constraints on indoor unit installation
You should note that indoor units that can be connected to this outdoor unit are the following models.
•Indoor units with model numbers 15-140 (PUMY-P100:15-125) can be connected. Refer to the table 1 below for possible room, indoor unit combinations.
Verification
The rated capacity should be determined by observing the table below. The unit’s quantities are limited as shown in the following table 2. For the next step, make sure that the total rated capacity selected will stay in a range of 50% - 130% of the outdoor unit capacity.
• PUMY-P100 |
5.6 - 14.6 kW |
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• PUMY-P125 |
7.1 - 18.2 kW |
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• PUMY-P140 |
8.0 - 20.2 kW |
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Table 1 |
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Indoor unit type |
15 |
20 |
25 |
32 |
40 |
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50 |
63 |
71 |
80 |
100 |
125 |
140 |
Rated capacity |
1.7 |
2.2 |
2.8 |
3.6 |
4.5 |
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5.6 |
7.1 |
8.0 |
9.0 |
11.2 |
14.0 |
16.0 |
(Cooling) (kW) |
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Table 2 |
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Connectable indoor units quantities |
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PUMY-P100 |
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1-8 |
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PUMY-P125 |
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1-10 |
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PUMY-P140 |
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1-12* |
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Combinations in which the total capacity of indoor units exceeds the capacity of the outdoor unit will reduce the cooling capacity of each indoor unit below their rated cooling capacity. Thus, combine indoor units with an outdoor unit within the outdoor unit’s capacity, if possible.
*Only when all the indoor units are 1.5 kW models, 12 indoor units can be connected to 1 outdoor unit.
2.4. Connecting a PWFY Unit
When using a PWFY unit as an indoor unit, be aware of the following points because the PWFY unit is different from other indoor units.
2.4.1. Connection restrictions
•Only 1 PWFY-P100VM-E-AU can be connected. PWFY-P200VM-E-AU and PWFY- P100VM-E-BU cannot be connected.
•The PWFY unit cannot be the only unit connected to an outdoor unit. Select an outdoor unit so that the total rated capacity of the indoor units, excluding the PWFY unit, is 50–100% of the outdoor unit capacity.
Limits for the total rated capacity of the indoor units when connecting a PWFY unit
•PUMY-P100 (1 PWFY unit + Non-PWFY units [5.6–11.2 kW])
•PUMY-P125 (1 PWFY unit + Non-PWFY units [7.1–14.0 kW])
•PUMY-P140 (1 PWFY unit + Non-PWFY units [8.0–15.5 kW])
2.4.2. Indoor unit specifications
When connecting a PWFY unit to a PUMY unit, the following specifications will change.
•The PWFY unit can operate only in heating mode. The PWFY unit cannot operate in cooling mode. However, the indoor units other than the PWFY unit can operate in cooling mode.
•The other indoor units cannot operate at the same time as the PWFY unit.
•The operation of the PWFY unit has priority. When the PWFY unit is in the operation mode, the other indoor units will stop.
•The temperature setting of the remote controller is the target value for the outlet water temperature.
2.4.3. Switch settings (Fig. 2-2)
When connecting a PWFY unit to a PUMY unit, set DIP switches SW1-1, SW4-2, and SW4-6 of the PWFY unit to ON.
2.4.4. Test run
If the test run is carried out using the outdoor unit switches, the PWFY unit will not operate. Carry out the test run using the PWFY unit switches or the remote controller.
For information about carrying out the test run, refer to the data book or the service manual for the PWFY unit.
2.4.5. Refrigerant collecting (Pump down)
Step in the pump down procedure instructs the user to “operate all indoor units in cooling mode”. However, the PWFY unit will not operate in cooling mode. Operate all of the indoor units, excluding the PWFY unit, in cooling mode.
4
2. Installation location
2.5. Ventilation and service space
2.5.1. When installing a single outdoor unit
Minimum dimensions are as follows, except for Max., meaning Maximum dimensions, indicated.
Refer to the figures for each case. 1 Obstacles at rear only (Fig. 2-3)
2 Obstacles at rear and above only (Fig. 2-4)
• Do not install the optional air outlet guides for upward airflow.
3 Obstacles at rear and sides only (Fig. 2-5) 4 Obstacles at front only (Fig. 2-6)
When using an optional air outlet guide, the clearance is 500 mm or more.
5 Obstacles at front and rear only (Fig. 2-7)
When using an optional air outlet guide, the clearance is 500 mm or more.
6 Obstacles at rear, sides, and above only (Fig. 2-8)
• Do not install the optional air outlet guides for upward airflow.
2.5.2. When installing multiple outdoor units
Leave 10 mm space or more between the units. 1 Obstacles at rear only (Fig. 2-9)
2 Obstacles at rear and above only (Fig. 2-10)
•No more than three units must be installed side by side. In addition, leave space as shown.
•Do not install the optional air outlet guides for upward airflow.
3 Obstacles at front only (Fig. 2-11)
When using an optional air outlet guide, the clearance is 1000 mm or more.
4 Obstacles at front and rear only (Fig. 2-12)
When using an optional air outlet guide, the clearance is 1000 mm or more.
5 Single parallel unit arrangement (Fig. 2-13)
When using an optional air outlet guide installed for upward airflow, the clearance is 1000 mm or more.
6 Multiple parallel unit arrangement (Fig. 2-14)
When using an optional air outlet guide installed for upward airflow, the clearance is 1500 mm or more.
7 Stacked unit arrangement (Fig. 2-15)
•The units can be stacked up to two units high.
•No more than two stacked units must be installed side by side. In addition, leave space as shown.
.500 
Max 
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150 |
Fig. 2-3 |
Fig. 2-4 |
1000
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200 |
300 |
200 |
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Fig. 2-5
.500 |
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Max |
1500 |
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300
1000
Fig. 2-6
150 |
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1000 |
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Fig. 2-7 |
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.300 |
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Max |
1500 |
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1500 |
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500 |
Fig. 2-10 |
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150
2000
600
1000 
Fig. 2-13
250 
250 |
500 |
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Fig. 2-8
1500
Fig. 2-11
500
3000
600
1500 
Fig. 2-14
300
Fig. 2-9
500
1500
Fig. 2-12
150
1500 |
800 |
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Fig. 2-15
5
2. Installation location
2.5.3. Windy location installation
When installing the outdoor unit on a rooftop or other location unprotected from the wind, situate the air outlet of the unit so that it is not directly exposed to strong winds. Strong wind entering the air outlet may impede the normal airflow and a malfunction may result.
The following shows two examples of precautions against strong winds.
1 Install an optional air guide if the unit is installed in a location where strong winds from a typhoon, etc. may directly enter the air outlet. (Fig. 2-16)
A Air guide
2 Position the unit so that the air outlet blows perpendicularly to the seasonal wind direction, if possible. (Fig. 2-17)
B Wind direction
Fig. 2-16 |
Fig. 2-17 |
3. Installing the outdoor unit
Max.30
AM10 (3/8") bolt
BBase
CAs long as possible.
DVent
600 |
Min.360 |
600 |
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330 |
370 |
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Min.10 |
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175 |
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175 |
25 |
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950 |
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•Be sure to install the unit in a sturdy, level surface to prevent rattling noises during
(mm)operation. (Fig. 3-1)
<Foundation specifications>
Foundation bolt |
M10 (3/8″) |
Thickness of concrete |
120 mm |
Length of bolt |
70 mm |
Weight-bearing capacity |
320 kg |
•Make sure that the length of the foundation bolt is within 30 mm of the bottom surface of the base.
•Secure the base of the unit firmly with four-M10 foundation bolts in sturdy locations.
Installing the outdoor unit
•Do not block the vent. If the vent is blocked, operation will be hindered and breakdown may result.
•In addition to the unit base, use the installation holes on the back of the unit to attach wires, etc., if necessary to install the unit. Use self-tapping screws (ø5 × 15
mm or less) and install on site.
Warning:
•The unit must be securely installed on a structure that can sustain its weight. If the unit is mounted on an unstable structure, it may fall down and cause damage or injuries.
•The unit must be installed according to the instructions in order to minimize the risk of damage from earthquakes, typhoons, or strong winds. An incorrectly installed unit may fall down and cause damage or injuries.
Fig. 3-1
4. Installing the refrigerant piping
4.1. Precautions for devices that use R410A refrigerant
• Refer to page 3 for precautions not included below on using air conditioners with R410A refrigerant.
• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration oil applied to the flared sections.
• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes, to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses specified in the table to the below. Make sure the insides of the pipes are clean and do not contain any harmful contaminants such as sulfuric compounds, oxidants, debris, or dust.
Warning:
When installing or relocating, or servicing the air conditioner, use only the specified refrigerant (R410A) to charge the refrigerant lines. Do not mix it with any other refrigerant and do not allow air to remain in the lines.
If air is mixed with the refrigerant, then it can be the cause of abnormal high pressure in the refrigerant line, and may result in an explosion and other hazards. The use of any refrigerant other than that specified for the system will cause mechanical failure or system malfunction or unit breakdown. In the worst case, this could lead to a serious impediment to securing product safety.
Indoor unit type |
15-50 |
63-140 |
Liquid pipe |
ø6.35 thickness 0.8 mm |
ø9.52 thickness 0.8 mm |
Gas pipe |
ø12.7 thickness 0.8 mm |
ø15.88 thickness 1.0 mm |
• Do not use pipes thinner than those specified above.
6
4. Installing the refrigerant piping
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A+B+C+D+a+b+c+d+e 120 m |
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L = A+B+C+D+e 80 m |
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ℓ = B+C+D+e |
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30 m |
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H |
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50 m (Outdoor lower H 20 m) |
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12 m |
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L |
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ℓ |
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e |
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A+a+b+c+d+e+f |
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120 m |
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L = A+f |
80 m, ℓ = f 30 m |
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50 m (Outdoor lower H |
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20 m) |
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12 m |
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ℓ |
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A : Outdoor Unit |
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B : First Branch |
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C : Indoor unit |
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D : Cap |
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A |
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(mm) |
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È Liquid pipe |
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É Gas pipe |
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PUMY-P100-140 |
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ø9.52 |
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ø15.88 |
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B, C, D |
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(mm) |
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Ê Total capacity of indoor units |
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È Liquid pipe |
É Gas pipe |
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ø9.52 |
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ø15.88 |
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a, b, c, d, e, f |
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Ë Model number |
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È Liquid pipe |
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É Gas pipe |
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15, 20, 25, 32, 40, 50 |
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ø6.35 |
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ø12.7 |
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63, 80, 100, 125, 140 |
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ø9.52 |
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ø15.88 |
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Ì Branch kit model |
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CMY-Y62-G-E |
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Í 4-Branching header |
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Î 8-Branching header |
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CMY-Y64-G-E |
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CMY-Y68-G-E |
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h
Fig. 4-1
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45°± 2° |
90°± 0.5° |
øA |
R0 |
. 4
-
R0
. 8
A Flare cutting dimensions
B Flare nut tightening torque
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A (Fig. 4-2) |
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Fig. 4-2 |
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Copper pipe O.D. |
Flare dimensions |
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(mm) |
øA dimensions (mm) |
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ø6.35 |
8.7 |
- 9.1 |
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ø9.52 |
12.8 |
- 13.2 |
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ø12.7 |
16.2 |
- 16.6 |
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ø15.88 |
19.3 |
- 19.7 |
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B (Fig. 4-2)
Copper pipe O.D. |
Flare unt O.D. |
Tightening torque |
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(mm) |
(mm) |
(N·m) |
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ø6.35 |
17 |
14 |
- 18 |
ø6.35 |
22 |
34 |
- 42 |
ø9.52 |
22 |
34 |
- 42 |
ø12.7 |
26 |
49 |
- 61 |
ø12.7 |
29 |
68 |
- 82 |
ø15.88 |
29 |
68 |
- 82 |
ø15.88 |
36 |
100 |
- 120 |
4.2. Connecting pipes (Fig. 4-2)
Fig. 4-1 is a sample of piping system.
•When commercially available copper pipes are used, wrap liquid and gas pipes with commercially available insulation materials (heat-resistant to 100°C or more, thickness of 12 mm or more).
•The indoor parts of the drain pipe should be wrapped with polyethylene foam insulation materials (specific gravity of 0.03, thickness of 9 mm or more).
•Apply thin layer of refrigerant oil to pipe and joint seating surface before tightening flare nut. A
•Use two wrenches to tighten piping connections. B
•Use leak detector or soapy water to check for gas leaks after connections are completed.
•Apply refrigerating machine oil over the entire flare seat surface. C
•Use the flare nuts for the following pipe size. D
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Indoor unit |
Outdoor unit |
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15-50 |
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63-140 |
100-140 |
Gas side |
Pipe size (mm) |
ø12.7 |
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ø15.88 |
ø15.88 |
Liquid side |
Pipe size (mm) |
ø6.35 |
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ø9.52 |
ø9.52 |
•When bending the pipes, be careful not to break them. Bend radius of 100 mm to 150 mm is sufficient.
•Make sure the pipes do not contact the compressor. Abnormal noise or vibration may result.
1 Pipes must be connected starting from the indoor unit. Flare nuts must be tightened with a torque wrench.
2 Flare the liquid pipes and gas pipes and apply a thin layer of refrigeration oil (Applied on site).
•When usual pipe sealing is used, refer to Table 3 for flaring of R410A refrigerant pipes.
The size adjustment gauge can be used to confirm A measurements.
Warning:
When installing the unit, securely connect the refrigerant pipes before starting the compressor.
A
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Table 3 (Fig. 4-3) |
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Copper pipe O.D. (mm) |
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A (mm) |
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A |
Die |
Flare tool for R410A |
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Flare tool for R22·R407C |
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Clutch type |
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B Copper pipe |
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ø6.35 (1/4″) |
0 - 0.5 |
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1.0 - 1.5 |
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ø9.52 (3/8″) |
0 - 0.5 |
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1.0 - 1.5 |
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ø12.7 (1/2″) |
0 - 0.5 |
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1.0 - 1.5 |
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ø15.88 (5/8″) |
0 - 0.5 |
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1.0 - 1.5 |
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ø19.05 (3/4″) |
0 - 0.5 |
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1.0 - 1.5 |
Fig. 4-3
7
4. Installing the refrigerant piping
A Front piping cover
B Piping cover
C Stop valve
D Service panel
E Bend radius : 100 mm - 150 mm
Fig. 4-4
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A Stop valve <Liquid side> |
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F Sealed, same way for gas side |
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B Stop valve <Gas side> |
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G Pipe cover |
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C Service port |
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H Do not use a wrench here. |
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D Open/Close section |
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Refrigerant leakage may result. |
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E Local pipe |
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I Use two wrenches here. |
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Fig. 4-5 |
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(1) |
1 |
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Fig. 4-6
(2) |
1 |
2 |
Fig. 4-7
4.3. Refrigerant piping (Fig. 4-4)
Remove the service panel D (three screws) and the front piping cover A (two screws) and rear piping cover B (two screws).
1Perform refrigerant piping connections for the indoor/outdoor unit when the outdoor unit’s stop valve is completely closed.
2 Vacuum-purge air from the indoor unit and the connection piping.
3After connecting the refrigerant pipes, check the connected pipes and the indoor unit for gas leaks. (Refer to 4.4 Refrigerant pipe airtight testing method)
4Vacuumize the refrigerant lines through the service port of the liquid and gas stop valves. And then open the stop valves completely (for both the liquid and gas stop valves). This will completely connect the refrigerant lines of the indoor and outdoor units.
•If the stop valves are left closed and the unit is operated, the compressor and control valves will be damaged.
•Use a leak detector or soapy water to check for gas leaks at the pipe connection sections of the outdoor unit.
•Do not use the refrigerant from the unit to purge air from the refrigerant lines.
•After the valve work is completed, tighten the valve caps to the correct torque: 20 to 25 N·m (200 to 250 kgf·cm).
Failure to replace and tighten the caps may result in refrigerant leakage. In
addition, do not damage the insides of the valve caps as they act as a seal to prevent refrigerant leakage.
5 Use sealant to seal the ends of the thermal insulation around the pipe connection sections to prevent water from entering the thermal insulation.
4.4. Refrigerant pipe airtight testing method
(1)Connect the testing tools.
•Make sure the stop valves A B are closed and do not open them.
•Add pressure to the refrigerant lines through the service port C of the liquid stop valve A and the gas stop valve B.
(2)Do not add pressure to the specified pressure all at once; add pressure little by little.
1 Pressurize to 0.5 MPa (5 kgf/cm2G), wait five minutes, and make sure the pressure does not decrease.
2 Pressurize to 1.5 MPa (15 kgf/cm2G), wait five minutes, and make sure the pressure does not decrease.
3 Pressurize to 4.15 MPa (41.5 kgf/cm2G) and measure the surrounding temperature and refrigerant pressure.
(3)If the specified pressure holds for about one day and does not decrease, the pipes have passed the test and there are no leaks.
•If the surrounding temperature changes by 1°C, the pressure will change by about 0.01 MPa (0.1 kgf/cm2G). Make the necessary corrections.
(4)If the pressure decreases in steps (2) or (3), there is a gas leak. Look for the source of the gas leak.
4.5. Stop valve opening method
(1) Gas side (Fig. 4-6)
1Remove the cap, pull the handle toward you and rotate 1/4 turn in a counterclockwise direction to open.
2 Make sure that the stop valve is open completely, push in the handle and rotate the cap back to its original position.
(2) Liquid side (Fig. 4-7)
1Remove the cap and turn the valve rod counterclockwise as far as it will go with the use of a 4 mm hexagonal wrench. Stop turning when it hits the stopper. (ø6.35: Approximately 4.5 revolutions) (ø9.52: Approximately 10 revolutions)
2Make sure that the stop valve is open completely, push in the handle and rotate the cap back to its original position.
A Valve |
F Open position side |
B Unit side |
G Service port |
C Handle |
H Wrench hole |
D Cap |
I Refrigerant flow direction |
E Local pipe side |
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Refrigerant pipes are protectively wrapped
• The pipes can be protectively wrapped up to a diameter of ø90 before or after connecting the pipes. Cut out the knockout in the pipe cover following the groove and wrap the pipes.
Pipe inlet gap
•Use putty or sealant to seal the pipe inlet around the pipes so that no gaps remain.
(If the gaps are not closed, noise may be emitted or water and dust will enter the unit and breakdown may result.)
8
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