Air-Conditioners
OUTDOOR UNIT
PUHY-YSMF-B
FOR INSTALLER
FÜR INSTALLATEURE
POUR L’INSTALLATEUR
VOOR DE INSTALLATEUR
PER L’INSTALLATORE
INSTALLATION MANUAL
For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit.
Remote controller (PAR-F25MA) is available as an optional remote controller.
INSTALLATIONSHANDBUCH
Zum sicheren und ordnungsgemäßen Gebrauch der Klimageräte das Installationshandbuch gründlich durchlesen.
Fernbedienung (PAR-F25MA) ist als Zubehör wahlweise erhältlich.
MANUEL D’INSTALLATION
Veuillez lire le manuel d’installation en entier avant d’installer ce climatiseur pour éviter tout accident et vous assurer d’u ne utilisation correcte.
La télécommande (PAR-F25MA) est disponible en option.
INSTALLATIEHANDLEIDING
Voor een veilig en juist gebruik moet u deze installatiehandleiding grondig doorlezen voordat u de airconditioner installeert.
De afstandsbedieningseenheid (PAR-F25MA) is verkrijgbaar als een optioneel toe te voegen afstandsbediening.
MANUALE DI INSTALLAZIONE
Per un uso sicuro e corretto, leggere attentamente questo manuale di installazione prima di installare il condizionatore d’aria.
Il comando a distanza (modello PAR-F25MA) disponibile in opzione.
ENGLISH
DEUTSCH
FRANÇAIS NEDERLANDS ITALIANO
ENGLISH
Contents |
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1. Safety precautions ...................................................................... |
3 |
1.1. Before installation and electric work ............................. |
3 |
1.2. Before getting installed ................................................. |
3 |
1.3. Before getting installed (moved) - electrical work ......... |
4 |
1.4. Before starting the test run ........................................... |
4 |
2. Combination with indoor units ..................................................... |
5 |
3. Confirmation of parts attached ................................................... |
5 |
4. Outdoor unit configuration .......................................................... |
6 |
5. Selection of installation site ........................................................ |
6 |
6. Space required around unit ........................................................ |
7 |
6.1. Individual installation .................................................... |
7 |
6.2. Collective installation and continuous installation ......... |
8 |
7. Lifting method and weight of product .......................................... |
8 |
8. Installation of unit ........................................................................ |
9 |
8.1. Location of anchor bolt ................................................. |
9 |
8.2. Installation .................................................................... |
9 |
8.3. Connecting direction for refrigerant piping.................. |
10 |
8.4. Noise level .................................................................. |
10 |
9. Caution for snow and seasonal wind ........................................ |
11 |
9.1. Snow and seasonal wind ............................................ |
11 |
9.2. Countermeasure to seasonal wind ............................. |
11 |
10. Refrigerant piping installation .................................................. |
12 |
10.1. Areas of caution ......................................................... |
12 |
10.2. Refrigerant piping system ........................................... |
13 |
10.3. Precautions concerning piping connection and valve |
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operation .................................................................... |
15 |
10.4. Oil balance pipe connection method .......................... |
18 |
10.5. Distributor (gas) connection method .......................... |
19 |
10.6. How to install branch pipe .......................................... |
20 |
10.7. Airtight test and evacuation ........................................ |
21 |
10.8. Thermal insulation of refrigerant piping ...................... |
22 |
11. Electrical work ......................................................................... |
24 |
11.1. Caution ....................................................................... |
24 |
11.2. Control box and connecting position of wiring ............ |
25 |
11.3. Wiring transmission cables ......................................... |
27 |
11.4. Wiring of main power supply and equipment |
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capacity ...................................................................... |
33 |
12. Test run .................................................................................... |
34 |
12.1. Checking before getting test run ................................. |
34 |
12.2. Test run method .......................................................... |
34 |
12.3. How to cope with test run abnormality ....................... |
35 |
12.4. Coping with remote controller abnormality ................. |
37 |
12.5. The following phenomena do not represent |
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abnormality (emergency)............................................ |
38 |
2
1. Safety precautions
1.1. Before installation and electric work
sBefore installing the unit, make sure you read all the “Safety precautions”.
sThe “Safety precautions”provide very important points regarding safety. Make sure you follow them.
Symbols used in the text
Warning:
Describes precautions that should be observed to prevent danger of injury or death to the user.
Caution:
Describes precautions that should be observed to prevent damage to the unit.
Symbols used in the illustrations
: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
: Indicates that caution should be taken with rotating parts. (This symbol is displayed on the main unit label.) <Color: Yellow>
: Indicates that the main switch must be turned off before servicing.
(This symbol is displayed on the main unit label.) <Color: Blue>
: Beware of electric shock (This symbol is displayed on the main unit label.) <Color: Yellow>
: Beware of hot surface (This symbol is displayed on the main unit label.) <Color: Yellow>
ELV : Please pay attention to electric shock fully because this is not Safety Extra Low-Voltage (SELV) circuit.
And at servicing, please shut down the power supply for both of Indoor Unit and Outdoor Unit.
Warning:
Carefully read the labels affixed to the main unit.
Warning:
•Ask the dealer or an authorized technician to install the air conditioner.
-Improper installation by the user may result in water leakage, electric shock, or fire.
•Install the air unit at a place that can withstand its weight.
-Inadequate strength may cause the unit to fall down, resulting in injuries.
•Use the specified cables for wiring. Make the connections securely so that the outside force of the cable is not applied to the terminals.
-Inadequate connection and fastening may generate heat and cause a fire.
•Prepare for typhoons and other strong winds and earthquakes and install the unit at the specified place.
-Improper installation may cause the unit to topple and result in injury.
•Always use an air cleaner, humidifier, electric heater, and other accessories specified by Mitsubishi Electric.
-Ask an authorized technician to install the accessories. Improper installation by the user may result in water leakage, electric shock, or fire.
•Never repair the unit. If the air conditioner must be repaired, consult the dealer.
-If the unit is repaired improperly, water leakage, electric shock, or fire may result.
•Do not touch the heat exchanger fins.
-Improper handling may result in injury.
•If refrigerant gas leaks during installation work, ventilate the room.
-If the refrigerant gas comes into contact with a flame, poisonous gases will be released.
•Install the air conditioner according to this Installation Manual.
-If the unit is installed improperly, water leakage, electric shock, or fire may result.
•Have all electric work done by a licensed electrician according to “Electric Facility Engineering Standard” and “Interior Wire Regulations”and the instructions given in this manual and always use a special circuit.
-If the power source capacity is inadequate or electric work is performed improperly, electric shock and fire may result.
•Securely install the cover of control box and the panel.
-If the cover and panel are not installed properly, dust or water may enter the outdoor unit and fire or electric shock may result.
•When installing and moving the air conditioner to another site, do not charge the it with a refrigerant different from the refrigerant (R22) specified on the unit.
-If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.
•If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit even if the refrigerant should leak.
-Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to lack of oxygen in the room could result.
•When moving and reinstalling the air conditioner, consult the dealer or an authorized technician.
-If the air conditioner is installed improperly, water leakage, electric shock, or fire may result.
•After completing installation work, make sure that refrigerant gas is not leaking.
-If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or other heat source, it may generate noxious gases.
•Do not reconstruct or change the settings of the protection devices.
-If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified by Mitsubishi Electric are used, fire or explosion may result.
•To dispose of this product,consult your dealer.
•The installer and system specialist shall secure safety against leakage according to local regulation or standards.
-Following standards may be applicable if local regulation are not available.
•Pay a special attention to the place, such as a basement, etc. where refrigeration gas can stay, since refrigeration is heavier than the air.
1.2. Before getting installed
Caution:
•Do not install the unit where combustible gas may leak.
-If the gas leaks and accumulates around the unit, an explosion may result.
•Do not use the air conditioner where food, pets, plants, precision instruments, or artwork are kept.
-The quality of the food, etc. may deteriorate.
•Do not use the air conditioner in special environments.
-Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of the air conditioner or damage its parts.
•When installing the unit in a hospital, communication station, or similar place, provide sufficient protection against noise.
-The inverter equipment, private power generator, high-frequency medical equipment, or radio communication equipment may cause the air conditioner to operate erroneously, or fail to operate. On the other hand, the air conditioner may affect such equipment by creating noise that disturbs medical treatment or image broadcasting.
•Do not install the unit on a structure that may cause leakage.
-When the room humidity exceeds 80% or when the drain pipe is clogged, condensation may drip from the indoor unit. Perform collective drainage work together with the outdoor unit, as required.
ENGLISH
3
ENGLISH
1.3.Before getting installed (moved) - electrical work
Caution:
•Ground the unit.
-Do not connect the ground wire to gas or water pipes, lightning rods, or telephone ground lines. Improper grounding may result in electric shock.
•The reverse phase of L lines (L1, L2, L3) can be detected (Error cord: 4103), but the reverse phase of L lines and N line can be not be detected.
-The some electric parts should be dameged when power is supplied under the miss wiring.
•Install the power cable so that tension is not applied to the cable.
-Tension may cause the cable to break and generate heat and cause a fire.
•Install an leak circuit breaker, as required.
-If an leak circuit breaker is not installed, electric shock may result.
•Use power line cables of sufficient current carrying capacity and rating.
-Cables that are too small may leak, generate heat, and cause a fire.
•Use only a circuit breaker and fuse of the specified capacity.
-A fuse or circuit breaker of a larger capacity or a steel or copper wire may result in a general unit failure or fire.
•Do not wash the air conditioner units.
-Washing them may cause an electric shock.
•Be careful that the installation base is not damaged by long use.
-If the damage is left uncorrected, the unit may fall and cause personal injury or property damage.
•Install the drain piping according to this Installation Manual to ensure proper drainage. Wrap thermal insulation around the pipes to prevent condensation.
-Improper drain piping may cause water leakage and damage to furniture and other possessions.
•Be very careful about product transportation.
-Only one person should not carry the product if it weighs more than
20 kg.
-Some products use PP bands for packaging. Do not use any PP bands for a means of transportation. It is dangerous.
-Do not touch the heat exchanger fins. Doing so may cut your fingers.
-When transporting the outdoor unit, suspend it at the specified positions on the unit base. Also support the outdoor unit at four points so that it cannot slip sideways.
•Safely dispose of the packing materials.
-Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries.
-Tear apart and throw away plastic packaging bags so that children will not play with them. If children play with a plastic bag which was not torn apart, they face the risk of suffocation.
1.4. Before starting the test run
Caution:
•Turn on the power at least 12 hours before starting operation.
-Starting operation immediately after turning on the main power switch can result in severe damage to internal parts. Keep the power switch turned on during the operational season.
•Do not touch the switches with wet fingers.
-Touching a switch with wet fingers can cause electric shock.
•Do not touch the refrigerant pipes during and immediately after operation.
-During and immediately after operation, the refrigerant pipes are may be hot and may be cold, depending on the condition of the refrigerant flowing through the refrigerant piping, compressor, and other refrigerant cycle parts. Your hands may suffer burns or frostbite if you touch the refrigerant pipes.
•Do not operate the air conditioner with the panels and guards removed.
-Rotating, hot, or high-voltage parts can cause injuries.
•Do not turn off the power immediately after stopping operation.
-Always wait at least five minutes before turning off the power. Otherwise, water leakage and trouble may occur.
4
2. Combination with indoor units
The indoor units connectable to this unit are shown below.
Outdoor unit model |
Total capacity of |
Quantity of connectable |
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connected indoor unit |
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Model name of connectable indoor unit |
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name |
models |
indoor unit |
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PUHY-600 |
300 to 780 |
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PMFY-P25 ·32 ·40 ·63 |
VBM |
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PLFYP32 ·40 |
·50 ·63 ·80 ·100 ·125 |
VKM |
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PLFYP20 ·25 |
·32 ·40 ·50 ·63 ·80 ·100 ·125 |
VLMD |
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PUHY-650 |
325 to 845 |
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PEFYP20 ·25 |
·32 |
VML |
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PEFYP40 ·50 |
·63 ·71 ·80 ·100 ·125 ·140 ·200 ·250 |
VMH |
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3 to 32 |
PCFYP40 ·63 |
·100 ·125 |
VGM |
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PUHY-700 |
350 to 910 |
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PKFYP20 ·25 |
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VAM |
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PKFYP32 |
·40 |
·50 |
VGM |
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PFFYP20 |
·25 |
·32 ·40 ·50 ·63 |
VLEM |
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PUHY-750 |
375 to 975 |
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PFFYP20 |
·25 |
·32 ·40 ·50 ·63 |
VLRM |
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PDFYP20 |
·25 |
·32 ·40 ·50 ·63 ·71 ·80 ·100 ·125 |
VM |
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Note:
1.The total capacity of connected indoor unit models represents the total sum of the figures expressed in the indoor model name.
2.Combinations in which the total capacity of the connected indoor units exceeds the capacity of the outdoor unit will reduce the capacity of each indoor unit below the rated capacity during simultaneous operation. Therefore, if circumstances allows, combine indoor units within the capacity of the outdoor unit.
3.A transmission booster (RP) is required when the number of connected indoor unit models in a cooling system exceeds the number of models specified in the chart below.
*The maximum number of units that can be controlled is determined by the indoor unit model, the type of remote controller and their capabilities.
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Remote controller type |
Remote controller PAR-F 25MA |
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(*1) |
Number of connected indoor units that can |
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Capability of the |
Prior to Ver. E |
After Ver. F |
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be connected without a RP |
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connected indoor units |
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200 or lower |
16 (32) |
20 (40) |
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200 or higher |
16 (32) |
16 (32) |
The number of indoor units and the total number of remote controllers is displayed within the parenthesis ( ).
*1 If even one unit that is higher than 200 exists in the cooling system, the maximum capacity will be “200 or higher”.
3. Confirmation of parts attached
This outdoor unit is attached with the parts below. Please check the quantity for each item.
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Name |
1 Conduit mounting plate |
2 Conduit mounting plate |
3 Conduit mounting plate |
4 Tapping screw M4 × 12 |
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ø40 |
ø 33 |
ø 27 |
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Shape |
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name |
PUHN-200YMF-B |
1 |
1 |
1 |
4 |
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Model |
PUHN-250YMF-B |
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Name |
5 Oil balance pipe |
6 Connecting pipe |
7 Packing |
8 Seal |
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Shape |
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insideø 23 outsideø 35 |
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inside ø 23, outside ø 35 |
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name |
PUHN-200YMF-B |
1 |
1 |
1 |
2 |
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Model |
PUHN-250YMF-B |
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*6 Connecting pipe is fixed with the unit. |
ENGLISH
5
ENGLISH
4. Outdoor unit configuration
The unit (PUHY-600/650/700/750YSMF-B) consists of a combination of variable capacity units (PUHY-400/500YMF-B) and constant capacity units (PUHN-200/250YMF-B). A CMC-30A (optional) is required when using a combination of these units.
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Super Y |
Variable capacity unit Constant capacity unit |
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PUHY-600YSMF-B |
PUHY-400YMF-B |
PUHN-200YMF-B |
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PUHY-650YSMF-B |
PUHN-250YMF-B |
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PUHY-700YSMF-B |
PUHY-500YMF-B |
PUHN-200YMF-B |
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PUHY-750YSMF-B |
PUHN-250YMF-B |
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CMC-30A (optional) |
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Name |
1 Distributer (gas) |
2 Oil balance pipe 2 |
3 Distributer (liquid) |
4 Connecting pipe |
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Shape |
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name |
CMC-30A |
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1 |
1 |
1 |
1 |
Model |
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Name |
5 Connecting pipe |
6 Connecting pipe |
7 Connecting pipe |
8 Elbow |
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Shape |
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name |
CMC-30A |
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1 |
1 |
1 |
2 |
Model |
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5. Selection of installation site
Select space for installing outdoor unit, which will meet the following conditions:
•no direct thermal radiation from other heat sources
•no possibility of annoying neighbors by noise from unit
•no exposition to strong wind
•with strength which bears weight of unit
•note that drain flows out of unit when heating
•with space for air passage and service work shown below
Because of the possibility of fire, do not install unit to the space where generation, inflow, stagnation, and leak of combustible gas is expected.
•Avoid unit installation in a place where acidic solution and spray (sulfur) are often used.
•When having cooling operation at an outside air temperature of below 10° C, in order to obtain steady operation of unit, select an instal-
lation site not exposed directly to rain and snow, or install air outlet and inlet ducts. (Refer to Page 11.) Install the outdoor unit at the same position on the same floor, or above, the indoor unit. (See the figure at the right.)
•Do not use unit in any special environment where oil, steam and sulfuric gas exist.
Installation restriction on outdoor unit when cooling operation is performed when the outdoor air temperature is 10° C or lower.
A
(Same floor as indoor unit, or floor above)
A 4 m or less
6
6. Space required around unit
6.1. Individual installation
Basic space required
A space of at least 250 mm is necessary at the back for inlet air. Taking servicing, etc. from the rear into account, a space of about 450 mm should be provided, the same as at the front.
D
A
EF
B
C
<Top view> |
<Side view> |
A 250 mm or more
B 450 mm or more
C Front (outside of machine room)
D Top discharge (open in principle)
E Front inlet (open in principle)
F Rear inlet (open in principle)
When inlet air enters from right and left sides of unit
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B |
C |
A |
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D
A L1 or more
A |
B |
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h |
C |
H |
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<Side view> |
B L2 or more
C Front
D No restrictions on wall height (left and right)
Note:
•Wall heights (H) of the front and the back sides shall be within overall height of unit.
•When the total height is exceeded, add the “h” dimension of the figure above to L1 and L2 in the table above.
L1 L2
450 250
When unit is surrounded by walls |
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A |
B |
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B |
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h |
C |
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E |
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A |
D |
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h |
H |
650 |
325 |
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H |
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C |
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<Side view> |
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A L1 or more |
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B L2 or more |
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C Front |
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D Front panel |
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E Rear panel |
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figure above to L1 and L2 in the table above. |
ENGLISH |
Note: |
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• |
Wall heights (H) of the front and the back sides shall be within |
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height of front panel and rear panel. |
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• |
If the panel height is exceeded, add the “h” dimension of the |
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L1 L2
450 250
Example: When h is 100
The L1 dimension becomes 450 + 100 = 550 mm.
When there is an obstruction above the unit
A
E
D
B
C F
When there is little space up to an obstruction
A 45° or more
B 300 mm or more
C Front
D 1000 mm or more
E Air outlet guide (procured at the site)
F Rear
7
ENGLISH
6.2.Collective installation and continuous installation
Space required for collective installation and continuous installation:
When installing several units, leave the space between each block as shown below considering passage for air and people.
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B |
E |
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A |
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A |
CC
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D |
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B |
F |
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B |
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E |
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A |
C |
C |
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G |
A |
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D |
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B |
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E |
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A
C C C C
B B
F F F F E
A
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B |
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E |
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C |
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C |
G |
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DD
A
A (Must be open)
B Wall height (H)
C Front
D 1000 mm or more
E 250 mm or more
F 450 mm or more
G 900 mm or more
Note:
•Open in the two directions.
•In case wall height (H) exceeds overall height of unit, add “h” dimension (h = wall height <H> – overall height of unit) to marked dimension.
•If there is a wall at both the front and the rear of the unit, install up to three units consecutively in the side direction and provide a space of 1000 mm or more as inlet space/passage space for each three units.
7. Lifting method and weight of product
•When carrying the unit suspended, pass the ropes under the unit and use the two suspension points each at the front and rear.
•Always lift the unit with ropes attached at four points so that impact is not applied to the unit.
•Attach the ropes to the unit at an angle of 40° or less.
• Use two ropes at least A m long. |
A = |
7 ···PUHN-200/250YMF-B |
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8 ···PUHY-400/500YMF-B |
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A
B
Dangerous!
A 40° or less
B Rope suspension part
Weight of product:
PUHY-400 |
PUHY-500 |
PUHN-200 |
PUHN-250 |
432 kg |
472 kg |
240 kg |
255 kg |
Caution:
Be very careful to carry product.
-Do not have only one person to carry product if it is more than 20 kg.
-PP bands are used to pack some products. Do not use them as a mean for transportation because they are dangerous.
-Do not touch heat exchanger fins with your bare hands. Otherwise you may get a cut in your hands.
-Tear plastic packaging bag and scrap it so that children cannot play with it. Otherwise plastic packaging bag may suffocate children to death.
-When carrying in outdoor unit, be sure to support it at four points. Carrying in and lifting with 3-point support may make outdoor unit unstable, resulting in a fall of it.
8
8. Installation of unit
8.1. Location of anchor bolt
Mount the constant capacity unit on the left and variable capacity unit on the right of the same frame (as seen from the front of the unit). Allow
10 mm of clearance between the units.
• Individual installation |
(Unit: mm) |
± 5 |
Constant |
unit |
Variable capacity unit |
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880 |
Constant capacityapacity unit |
Variable capacity unit |
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10 |
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560± 2 |
440 |
780± 2 |
780± 2 |
Service side
•Example of collective installation
± 5 |
Constant capacity unit |
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Variable capacity unit |
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Constant capacity unit |
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Variable capacity unit |
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880 |
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Constant capacity unit |
Variable capacity unit |
Constant capacity unit |
Variable capacity unit |
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10 |
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10 |
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10 |
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560± 2 |
440 |
780± 2 |
780± 2 |
440 |
560± |
2 |
440 |
780± 2 |
780± 2 |
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ServiceServi |
sideide |
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For collective installation, provide a 10 mm gap between units. |
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8.2. Installation |
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D |
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•Fix unit tightly with bolts as shown below so that unit will not fall down due to earthquake or gust.
•Use concrete or angle for foundation of unit.
•Vibration may be transmitted to the installation section and noise and vibration may be generated from the floor and walls, depending on the installation conditions. Therefore, provide ample
vibrationproofing (cushion pads, cushion frame, etc.).
ENGLISH
EF
880± 5 |
A
B
ABe sure that the corners are firmly seated. If the corners are not firmly seated, the installation feet may be bent
B M10 anchor bolt procured at the site
C Corner is not seated.
DUnit
(Provide ample vibrationproofing between the unit and the foundation by using cushion pads, cushion frame, etc.)
E Piping and wiring space (bottom piping, bottom wiring)
F Concrete foundation
C |
Warning:
•Be sure to install unit in a place strong enough to withstand its weight.
Any lack of strength may cause unit to fall down, resulting in a personal injury.
•Have installation work in order to protect against a strong wind and earthquake.
Any installation deficiency may cause unit to fall down, resulting in a personal injury.
When building the foundation, give full attention to the floor strength, drain water disposal <during operation, drain water flows out of the unit>, and piping and wiring routes.
9
ENGLISH
Down piping and down wiring precautions
When down piping and down wiring are performed, be sure that foundation and base work does not block the base through holes. When down piping is performed, make the foundation at least 150 mm high so that the piping can pass under the bottom of the unit.
<PUHN-200/250YMF-B> |
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<PUHY-400/500YMF-B> |
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55 |
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56 |
A |
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584 |
194 75 |
840E 880B |
910 |
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694 |
80 |
82 |
78 |
840E |
880B |
910 |
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25 |
160 |
130 |
121 |
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230 |
150 |
80 |
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F |
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73 80 |
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111 |
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90 |
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560B |
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55 |
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73 |
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780B |
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56 |
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F |
15 |
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780B |
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15 |
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760G |
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1760G |
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990D |
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1990D |
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A Bottom piping through hole
B (bolt hole)
C (bolt hole for old models)
D (unit width)
E (unit depth)
F Bottom wiring through hole
G (bolt hole for packing)
8.3.Connecting direction for refrigerant piping
Two connecting directions are available for refrigerant piping of the outdoor unit, bottom piping and front piping,as shown below:
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A |
A |
B |
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C |
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D |
B
A Knock-out hole
B Bottom piping
C Front piping
D Connect piping (to constant capacity unit)
Note:
In the case of bottom piping, build a 100 mm or higher foundation so that piping will go through the bottom of the unit.
8.4. Noise level
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(50/60Hz) |
PUHY-400 |
PUHY-500 |
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PUHN-200 |
PUHN-250 |
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60/61 dB (A-weighted) |
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56 dB (A-weighted) |
57 dB (A-weighted) |
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1m |
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1m |
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A Front
B Measuring point
Measuring location: a room free from echoes and reverberations
10
9. Caution for snow and seasonal wind
In cold and/or snowy areas, sufficient countermeasures to wind and snow damages should be taken for operating unit in normal and good condition in winter time. Even in the other areas, full consideration is required for installation of unit in order to prevent abnormal operations caused by seasonal wind or snow. When rain and snow directly fall on unit in the case of air-conditioning operations in 10 or less degrees centigrade outdoor air, mount inlet and outlet ducts on unit for assuring stable operations.
9.1. Snow and seasonal wind
■Prevention of wind and snow damages in cold or snowy areas:
Refer to the figure of snow hood shown below:
•Snow hood
Note:
1.Height of frame base for snow damage prevention (H) shall be twice as high as expected snowfall. Width of frame base shall not exceed that of the unit. The frame base shall be made of angle steel, etc., and designed so that snow and wind slip through the structure. (If frame base is too wide, snow will be accumulated on it.)
2.Install unit so that seasonal wind will not directly lash against openings of inlet and outlet ducts.
3.Build frame base at customer referring to this figure. Material : Galvanized steel plate 1.2T
Painting: Overall painting with polyester powder
Color : Munsell 5Y8/1 (same as that of unit)
4.When the unit is used in a cold region and the heating operation is continuously performed for a long time when the outside air temperature is below freezing, install a heater to the unit base or take other appropriate measures to prevent water from freezing on the base.
<PUHY-400/500YMF-B> |
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<PUHN-200/250YMF-B> |
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1093 |
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1888 |
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1093 |
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888 |
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A |
903 |
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903 |
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A
1145 |
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821 |
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1145 |
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821 |
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B |
(670) |
(1990) |
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B |
(670) |
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500 |
(840) |
500 |
500 |
(840) |
500 |
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(990) |
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B |
B |
H |
H |
ENGLISH
A Outlet
B Inlet
9.2. Countermeasure to seasonal wind
Referring to the figure shown below, take appropriate measures which will suit the actual situation of the place for installation.
A A
A Seasonal wind
11
ENGLISH
10. Refrigerant piping installation
Connecting the piping is a terminal-branch type in which refrigerant piping from the outdoor unit is branched at the terminal and connected to each of the indoor units.
The method of connection consists of flare connections at the indoor units, flange connections for the piping of the outdoor unit and flare connections for the liquid, oil balance piping. Note that the branched sections are brazed.
Warning:
Always use extreme care to prevent the refrigerant gas (R22) from leaking while using fire or flame. If the refrigerant gas comes in contact with the flame from any source, such as a gas stove, it breaks down and generates a poisonous gas which can cause gas poisoning. Never weld in an unventilated room. Always conduct an inspection for gas leakage after installation of the refrigerant piping has been completed.
10.1. Areas of caution
1Use the following materials for refrigeration piping.
•Material: Seamless phosphorous deoxidized copper pipe, C1220T-OL or C1220T-O (Note: C1220T-OL is preferred.)
•Size: Refer to pages 13 to 14.
2 Commercially available piping often contains dust and other materials. Always blow it clean with a dry inert gas.
3 Use care to prevent dust, water or other contaminants from entering the piping during installation.
4 Reduce the number of bending portions as much as possible, and make bending radius as big as possible.
5 Always use the branch piping set shown below, which are sold separately. This unit requires a CMC-30A (optional).
Branch pipe set name
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Line branching |
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Header branching |
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Total of units down- |
Total of units down- |
Total of units down- |
Total of units down- |
4 branching |
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7 branching |
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10 branching |
stream less than 160 |
stream 161 to 330 |
stream 331 to 630 |
stream more than 631 |
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CMY-Y102S-F |
CMY-Y102L-F |
CMY-Y202-F |
CMY-Y302-F |
CMY-Y104-E |
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CMY-Y107-E |
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CMY-Y1010-E |
6If the diameters of the branch piping of the designated refrigerant piping differs, use a pipe cutter to cut the connecting section and then use an adapter for connecting different diameters to connect the piping.
7Always observe the restrictions on the refrigerant piping (such as rated length, the difference between high/low pressures, and piping diameter).
Failure to do so can result in equipment failure or a decline in heating/cooling performance.
8 A second branch cannot be made after a header branch. (These are shown by × .)
A |
A |
B
A To outdoor unit
B Capped piping
9 Always use good-quality materials for brazing.
0The City Multi Series Super Y will stop due an abnormality due to excessive or insufficient coolant. At such a time, always properly charge the unit. When servicing, always check the notes concerning pipe length and amount of additional refrigerant at both locations, the refrigerant volume calculation table on the back of the service panel and the additional refrigerant section on the labels for the combined number of indoor units. (Refer to pages 13 to 14.)
A Never perform a pump down. This will damage the compressor.
B Never use refrigerant to perform an air purge. Always evacuate using a vacuum pump.
CAlways insulate the piping properly. Insufficient insulation will result in a decline in heating/cooling performance, water drops from condensation and other such problems. (Refer to pages 22 to 23.)
DWhen connecting the refrigerant piping, make sure the ball valve of the outdoor unit is completely closed (the factory setting) and do not operate it until the refrigerant piping for the outdoor and indoor units has been connected, a refrigerant leakage test has been performed and the evacuation process has been completed.
EAlways use a non-oxidizing brazing material for brazing the parts. If a non-oxidizing brazing material is not used, it could cause clogging or damage to the compressor unit. (Details of the piping connections and valve operation can be found on pages 15 to 19.)
Warning:
When installing and moving the air conditioner to another site, do not charge the it with a refrigerant different from the refrigerant (R22) specified on the unit.
- If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.
12