Mitsubishi PUHY-YSMF-B Installation Manual

Page 1

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.

ENGLISH

DEUTSCH

FRANÇAIS

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. ∗ 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.

NEDERLANDS

ITALIANO

Page 2

Contents

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

ENGLISH

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

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

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

abnormality (emergency)............................................ 38

Page 3

1. Safety precautions

1.1. Before installation and electric work

s Before installing the unit, make sure you read all the

“Safety precautions”.

s The “Safety precautions” pro vide 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 display ed on the main unit

label.) <Color: Yellow>

: Please pay attention to electric shock fully because this is

ELV

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 ma y result in water leakage, elec-

tric 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 gener ate 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 in-

jury.

• 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 per-

formed 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 de vice 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 per-

formance 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 f ail 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

Page 4

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 (L 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 sup-

plied under the miss wiring.

• Install the power cable so that tension is not applied to the cable.

- T ension ma y 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.

ENGLISH

- 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 per-

sonal 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 fin-

gers.

- When transporting the outdoor unit, suspend it at the specified po-

sitions 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 aw ay plastic packaging bags so that children

will not play with them. If children pla y with a plastic bag which w as not torn apart, they face the risk of suffocation.

1, L2, L3) can be detected (Error

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 pow er 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.

- Alwa ys wait at least five minutes before turning off the power. Oth-

erwise, water leakage and trouble may occur.

Page 5

2. Combination with indoor units

The indoor units connectable to this unit are shown below.

Outdoor unit model

name

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.

(*1) Capability of the connected indoor units

*1 If even one unit that is higher than 200 exists in the cooling system, the maximum capacity will be “200 or higher”.

Total capacity of

connected indoor unit

models

300 to 780PUHY-600

325 to 845PUHY-650

350 to 910PUHY-700

375 to 975PUHY-750

Number of connected indoor units that can be connected without a RP

200 or lower

200 or higher

Quantity of connectable

indoor unit

PMFY-P25 · 32 · 40 · 63 VBM PLFY- P32· 40 · 50 · 63 · 80 · 100 · 125 VKM PLFY- P20· 25 · 32 · 40 · 50 · 63 · 80 · 100 · 125 VLMD PEFY- P20· 25 · 32 VML PEFY- P40· 50 · 63 · 71 · 80 · 100 · 125 · 140 · 200 · 250 VMH

3 to 32

Remote controller type

The number of indoor units and the total number of remote controllers is displayed within the parenthesis ( ).

PCFY-P40· 63 · 100 · 125 VGM PKFY-P20· 25 VAM PKFY-P32· 40 · 50 VGM PFFY- P20· 25 · 32 · 40 · 50 · 63 VLEM PFFY- P20 · 25 · 32 · 40 · 50 · 63 VLRM PDFY-P20· 25 · 32 · 40 · 50 · 63 · 71 · 80 · 100 · 125 VM

Model name of connectable indoor unit

Remote controller PAR-F 25MA

Prior to Ver. E After Ver. F

16 (32) 20 (40) 16 (32) 16 (32)

ENGLISH

3. Confirmation of parts attached

This outdoor unit is attached with the parts below. Please check the quantity for each item.

Name 1 Conduit mounting plate 2 Conduit mounting plate 3 Conduit mounting plate 4 Tapping screw M4 × 12

Shape

PUHN-200YMF-B PUHN-250YMF-B

Model name

Name 5 Oil balance pipe 6 Connecting pipe 7 Packing 8 Seal

Shape

PUHN-200YMF-B PUHN-250YMF-B

Model name

ø40

1114

1112

ø33

ø27

insideø23 outsideø35

inside ø23, outside ø35

*6 Connecting pipe is fixed with the unit.

Page 6

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.

Super Y Variable capacity unit Constant capacity unit PUHY-600YSMF-B PUHY-650YSMF-B PUHN-250YMF-B PUHY-700YSMF-B PUHY-750YSMF-B PUHN-250YMF-B

CMC-30A (optional)

Name 1 Distributer (gas) 2 Oil balance pipe 2 3 Distributer (liquid) 4 Connecting pipe

Shape

CMC-30A 1 1 1 1

Model name

Name 5 Connecting pipe 6 Connecting pipe 7 Connecting pipe 8 Elbow

PUHY-400YMF-B

PUHY-500YMF-B

PUHN-200YMF-B

ENGLISH

Model name

Shape

CMC-30A 1 1 1 2

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 spra y (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 installation 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.

(Same floor as indoor unit, or floor above)

A 4 m or less

Page 7

6. Space required around unit

650

325

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.

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 unit is surrounded by walls

A L

1 or more

B L

2 or more

C Front D Front panel E Rear panel

Note:

• Wall heights (H) of the front and the back sides shall be within height of front panel and rear panel.

• If the panel height is exceeded, add the “h” dimension of the figure above to L

1 L2

1 and L2 in the table above.

ENGLISH

450 250

When inlet air enters from right and left sides of unit

A L1 or more B L

2 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

Example: When h is 100

The L1 dimension becomes 450 + 100 = 550 mm.

When there is an obstruction above the unit

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

Page 8

6.2. Collective installation and continu-

D D

CCCC

FEFFF

ous 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.

ENGLISH

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 40° or less B Rope suspension part

7 ··· PUHN-200/250YMF-B

A =

8 ··· PUHY-400/500YMF-B

Dangerous!

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 y our 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 pac kaging 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.

Page 9

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)

Constant capacity unit Variable capacity unit

Constant capacity unit

880±5

Variable capacity unit

Service side

• Example of collective installation

Constant capacity unit Variable capacity unit Constant capacity unit Variable capacity unit

Constant capacity unit

880±5

Variable capacity unit

780±2780±2440560±2

8.2. Installation

• 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.).

Constant capacity unit

440 780±2780±2440560±2

Service side

Variable capacity unit

1010

For collective installation, provide a 10 mm gap between units.

ENGLISH

880±5

A Be sure that the cor ners 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. D Unit

(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

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 str ong 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.

Page 10

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>

8073

ENGLISH

584

160

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)

560 760 990

130

B G D

194

121

840E880

910

8.3. Connecting direction for refrigerant piping

Two connecting directions are available f or refrigerant piping of the outdoor unit, bottom piping and front piping,as shown below:

<PUHY-400/500YMF-B>

694

150230

111

8.4. Noise level

788280

840E880

910

73 90 80

780

1760 1990

G D

780

PUHY-400 PUHY-500 PUHN-200 PUHN-250

60/61 dB (A-weighted)

56 dB (A-weighted) 57 dB (A-weighted)

(50/60Hz)

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.

A Front B Measuring point

Measuring location: a room free from echoes and reverberations

Page 11

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. Ev en in the other areas, full consider ation 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

<PUHY-400/500YMF-B>

1093

1888

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 sno w 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.

<PUHN-200/250YMF-B>

1093

888

ENGLISH

1145

A Outlet B Inlet

500(840)500

(670) 821 903

(1990)

1145

500(840)500

(670) 821 903

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.

(990)

A Seasonal wind

Page 12

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 sto ve, it breaks do wn and generates a poisonous gas which can cause gas poisoning. Ne ver weld in an unventilated room. Al wa ys conduct an inspection f or gas leakage after installation of the refrigerant piping has been completed.

10.1. Areas of caution

1 Use 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 separ ately. This unit requires a CMC-30A (optional).

Branch pipe set name

Line branching Header branching

Total of units down-

ENGLISH

stream less than 160

CMY-Y102S-F CMY-Y102L-F CMY-Y202-F CMY-Y302-F CMY-Y104-E CMY-Y107-E CMY-Y1010-E

Total of units down-

stream 161 to 330

Total of units down-

stream 331 to 630

Total of units down-

stream more than 631

4 branching 7 branching 10 branching

6 If 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.

7 Always 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 To outdoor unit B Capped piping

9 Always use good-quality materials for brazing. 0 The City Multi Series Super Y will stop due an abnormality due to excessive or insufficient coolant. At such a time, alw a ys 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. C Always insulate the piping properly. Insufficient insulation will result in a decline in heating/cooling perf ormance, water drops from condensation and

other such problems. (Refer to pages 22 to

D When 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.

E Always use a non-oxidizing brazing material for brazing the parts. If a non-oxidizing br azing 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.

Page 13

10.2. Refrigerant piping system

To down stream units

Liquid line (main) CGas line (main) C

Liquid line B

Gas line B

Gas line A

Distributer (gas) (optional)

Distributer (liguid) (optional)

Liquid line A

Oil balance pipe (optional) I (for distribution within the unit)

Constant

capacity unit

Variable

capacity unit

Line-branch method

Connection examples (connecting to six indoor units)

Indoor

side

Outdoor

side

Permissible length

Permissible high/

Low difference

■ Selecting the refrigerant branch kit

Use the table to the right to make the selection based on the model total of indoor units downstream from the branch section.

■ Select each section of refrigerant piping

(1) Section from outdoor unit to first

branch (C)

(2) Sections from branch to indoor

unit (a, b, c, d, e, f)

(3) Section from branch to branch

(D, E, F, G)

Select the size from the table to the right.

Variable capacity unit Constant capacity unit

400 500 200 250

■

Additional refrigerant charge

The outdoor unit is charged with refrigerant at the time of shipping according to the chart above. As this charge does not include the amount needed for extended piping, additional charging for each refrigerant line will be required on site. In order that future servicing may be properly provided, always keep a record of the size and length of each refrigerant line and the amount of additional charge by writing it in the space provided on the outdoor unit.

■

Calculation of additional refrigerant charge

•

Calculate the amount of additional charge based on the length of the piping extension and the size of the refrigerant line.

•

Use the table to the right as guide to calculating the amount of additional charging and charge the system according.

•

If the calculation results in a fraction of less than 0.1 kg, round up to the next 0.1 kg. For e xample, if the result of the calculation was 23.28 kg, round the result up to 23.3 kg.

•

If the total amount of refrigerant including the amount of refrigerant sealed in the outdoor unit when shipped from the factor plus additional refrigerant for extension piping e xceeds 73 kg, use 73 kg as the total amount of refrigerant. Amount of refrigerant when shipped from factory + added refrigerant

Total piping length

Item

Farthest piping length (L) Farthest piping length after first branch (r)

Oil balance pipe

Distributer (liquid)/Variable capacity unit, Constant capacity unit Distributer (gas)/Constant capacity unit

Indoor/Outdoor

Outdoor upper

Outdoor lower Indoor/Outdoor Variable capacity unit/Constant capacity unit

Each section

of piping

16 22 6.5 8.5

73 kg.

Constant

capacity unit

Note 1: Because it is built into the variable capacity unit, B is used to carry liquid only. Set the constant capacity unit and variable

Variable

Constant

Variable

capacity unit

A B

Note 1

Distributer

(liquid)

Distributer

(gas)

First branch

Indoor

unit

capacity unit in accordance with the G dimension given in the figure above (G = 0.01 m).

Oil balance pipe (optional) I (for distribution within the unit)

Gas line A Liquid line A

acde

Indoor

unit

245

capacity unit

Gas line (main) C

Indoor

unit

Indoor

unit

Variable

capacity unit

Distributer (gas) (optional)

Gas line B

Liquid line B Distributer (liquid) (optional)

Liquid line (main) C

Indicates piping connection points

Note:

• The model total for downstream units shown in the table below is the model total when viewed from Point A in the drawing above.

• With the exception of PUHY-600YSMF-B, the first branch is always CMY-Y302-F.

Piping components Tolerance

A+B+C+D+E+F+G+a+b+c+d+e+f 220 m or less

A (B)+C+D+E+F+G+f 100 m or less (Max. equivalent length 125 m)

D+E+F+G+f 40 m or less

The included oil balance pipe must be used. If any other piping is used, the length

of the oil balance pipe must be no more than 3 m (max. equivalent length 4 m), and height from the bottom of the unit must be no more than 0.1 m.

A, B (Liquid line) 4 m or less (Max. equivalent length 5 m)

A (Gas line) 4 m or less (Max. equivalent length 5 m)

H 50 m or less H 40 m or less

h 15 m or less

–

Must be installed on same frame, and there must be no high/low difference.

Select the branch kit, sold separately , from the tab le below . (Each kit contains a refrigerant and gas piping set.)

Downstream unit model total Branch kit model

160 or less CMY-Y102S-F 161 to 330 CMY-Y102L-F 331 to 630 CMY-Y202-F

631 or more CMY-Y302-F

(1) Refrigerant piping diameter in section from outdoor

unit to first branch (outdoor unit piping diameter)

Model

Piping diameter (mm)

Liquid line Gas line PUHY-600YSMF-B ø19.05 ø38.1 PUHY-650YSMF-B ø19.05 ø44.45 PUHY-700YSMF-B ø19.05 ø44.45 PUHY-750YSMF-B ø19.05 ø44.45

(3) Refrigerant piping diameter in section from

branch to branch

(kg)

Downstream unit

model total

80 or less

81 to 160 161 to 330 331 to 480

481 or more 631 or more

Liquid line

(mm)

ø9.52 ø12.7

ø12.7 ø15.88 ø15.88 ø19.05

Gas line

(mm)

ø15.88 ø19.05

ø25.4

ø31.75

ø38.1

ø44.45

(2) Refrigerant piping diameter in section from branch

to indoor unit (indoor unit piping diameter)

Model number Piping diameter (mm)

20 · 25 · 32 · 40

50 · 63 · 71 · 80

100 · 125 · 140

200

250

Liquid line ø6.35

Gas line ø12.7

Liquid line ø9.52

Gas line ø15.88

Liquid line ø9.52

Gas line ø19.05

Liquid line ø12.7

Gas line ø25.4

Liquid line ø12.7

Gas line ø28.58

Liquid pipe size total length of ø19.05 × 0.29

(m) × 0.29 (kg/m)

<Example> Indoor 1: 125 A: ø12.7 3 m a: ø9.52 15 m

Liquid pipe size total length of ø15.88 × 0.25

+++++ α

(m) × 0.25 (kg/m)

2: 125 B: ø15.88 1 m b: ø9.52 15 m

Liquid pipe size total length of ø12.7 × 0.12

(m) × 0.12 (kg/m)

3: 125 C: ø19.05 40 m c: ø9.52 10 m 4: 125 D: ø15.88 10 m d: ø9.52 5 m 5: 100 E: ø15.88 5 m e: ø9.52 5 m

Liquid pipe size total length of ø9.52 × 0.06

(m) × 0.06 (kg/m)

At the conditions below:

Liquid pipe size total length of ø6.35 × 0.024

(m) × 0.024 (kg/m)

6: 40 F: ø12.7 5 m f: ø6.35 5 m

The total length of each liquid line is as follows:

ø19.05: C = 40 m ø15.88: B + D + E = 1 + 10 + 5 = 16 m ø12.7 : A + F + G = 3 + 5 + 5 = 13 m ø9.52 : a + b + c + d + e = 50 m ø6.35 : f = 5 m

Therefore, <Calculation example> Additional refrigerant charge = 40 × 0.29 +16 × 0.25 + 13 × 0.12 +

G: ø12.7 5 m

50 × 0.06 + 5 × 0.024 + 3.0 = 23.3 kg

Value of α

Total capacity of

connecting indoor units

to Model 80 1.0 kg

Models 81 to 160 1.5 kg Models 161 to 330 2.0 kg Models 331 to 480 2.5 kg Models 481 to 630 3.0 kg

Models 631 or more 4.0 kg

To down stream units

ENGLISH

Page 14

Multiple line/header

Connection examples (connecting to six indoor units)

Item

Total piping length

Indoor

Farthest piping length (L)

side

Farthest piping length after first branch (r)

Outdoor

Permissible length

ENGLISH

Permissible high/

Low difference

Oil balance pipe

side

Distributer (liquid)/Variable capacity unit, Constant capacity unit Distributer (gas)/Constant capacity unit

Indoor/Outdoor Indoor/Outdoor

Variable capacity unit/Constant capacity unit

■ Selecting the refrigerant branch kit

Use the table to the right to make the selection based on the model total of indoor units downstream from the branch section or on the number of indoor units to be connected on the header branch.

■ Select each section of refrigerant piping

(1) Section from outdoor unit to first

branch (C)

(2) Sections from branch to indoor

unit (a, b, c, d, e, f)

(3) Section from branch to branch

(D, E, F)

Select the size from the table to the right.

Variable capacity unit Constant capacity unit

400 500 200 250

16 22 6.5 8.5

■

Additional refrigerant charge

■

Calculation of additional refrigerant charge

•

Calculate the amount of additional charge based on the length of the piping extension and the size of the refrigerant line.

•

Use the table to the right as guide to calculating the amount of additional charging and charge the system according.

•

If the calculation results in a fraction of less than 0.1 kg, round up to the next 0.1 kg. For e xample, if the result of the calculation was 20.03 kg, round the result up to 20.1 kg.

•

73 kg.

Outdoor upper Outdoor lower

Each section of piping

(kg)

Constant

capacity unit

Oil balance pipe (optional) I

Constant

capacity unit

Note 1: Because it is built into the variable capacity unit, B is used to carry liquid only. Set the constant capacity unit and variable

Variable

capacity unit

Note 1

Distributer

(liquid)

Distributer

Distributer (gas)

(gas)

C F

First branch

(branch joint)

Branch joint

capacity unit in accordance with the G dimension given in the figure above (G = 0.01 m).

Indoor

(for distribution within the unit)

In door

Indoor

unit

(for distribution within the unit)

Gas line A

Liquid line A

In door

Indoor

unit

In door

Indoor

unit

Gas line (main) C

Branch header

In door

Indoor

unit

Variable

capacity unit

Distributer (gas) (optional)

Gas line B

Liquid line B

Distributer (liquid) (optional)

Distributer (liguid) (optional)

Liquid line (main) C

Liquid line (main) CGas line (main) C

Indicates piping connection points

To down stream units

Note:

• The model total for downstream units shown in the table below is the model to-

Cap

tal when viewed from Point A in the drawing above.

• With the exception of PUHY -600YSMF-B,

the first branch is always CMY-Y302-F.

To do wn stream units

Piping components Tolerance

A+B+C+D+E+F+a+b+c+d+e+f 220 m or less

A (B)+C+D+E+c 100 m or less (Max. equivalent length 125 m)

D+E+c 40 m or less

The included oil balance pipe must be used. If any other piping is used, the length

of the oil balance pipe must be no more than 3 m (max. equivalent length 4 m), and height from the bottom of the unit must be no more than 0.1 m.

A, B (Liquid line) 4 m or less (Max. equivalent length 5 m)

A (Gas line) 4 m or less (Max. equivalent length 5 m)

H 50 m or less H 40 m or less

h 15 m or less

–

Must be installed on same frame, and there must be no high/low difference.

Select the branch kit, sold separately , from the tab le below . (Each kit contains a refrigerant and gas piping set.)

Line branching Header branching

Total of units downstream

less than 160

Total of units downstream

161 to 330

331 to 630

Total of units downstream

more than 631

CMY-Y102S-C CMY-Y102L-C CMY-Y202-C CMY-Y302-C

(1) Refrigerant piping diameter in section from out-

door unit to first branch (outdoor unit piping diameter)

Model

Piping diameter (mm)

Liquid line Gas line PUHY-600YSMF-B ø19.05 ø38.1 PUHY-650YSMF-B ø19.05 ø44.45 PUHY-700YSMF-B ø19.05 ø44.45 PUHY-750YSMF-B ø19.05 ø44.45

(3) Refrigerant piping diameter in section from branch

(2) Refrigerant piping diameter in section from

branch to indoor unit (indoor unit piping diameter)

Model number Piping diameter (mm)

20 · 25 · 32 · 40

50 · 63 · 71 · 80

100 · 125 · 140

to branch

Downstream unit model total

Liquid line (mm) Gas line (mm)

80 or less ø9.52 ø15.88

4 branching

header

7 branching

header

CMY-Y104 CMY-Y107 CMY-Y1010

Liquid line ø6.35

Gas line ø12.7

Liquid line ø9.52

Gas line ø15.88

Liquid line ø9.52

Gas line ø19.05

200

250

Liquid line ø12.7

Gas line ø25.4

Liquid line ø12.7

Gas line ø28.58

10 branching

header

81 to 160 ø12.7 ø19.05 161 to 330 ø12.7 ø25.4 331 to 480 ø15.88 ø31.75 481 to 630 ø15.88 ø38.1

631 or more ø19.05 ø44.45

Liquid pipe size total length of ø19.05 × 0.29

(m) × 0.29 (kg/m)

Liquid pipe size total length of ø15.88 × 0.25

+++++ α

(m) × 0.25 (kg/m)

Liquid pipe size total length of ø12.7 × 0.12

(m) × 0.12 (kg/m)

Liquid pipe size total length of ø9.52 × 0.06

(m) × 0.06 (kg/m)

Liquid pipe size total length of ø6.35 × 0.024

(m) × 0.024 (kg/m)

<Example> Indoor 1: 125 A: ø12.7 3 m a: ø9.52 10 m

2: 125 B: ø15.88 1 m b: ø9.52 5 m 3: 125 C: ø19.05 30 m c: ø9.52 5 m 4: 125 D: ø15.88 10 m d: ø9.52 10 m

At the conditions

below: 5: 100 E: ø12.7 5 m e: ø9.52 15 m 6: 40 F: ø12.7 15 m f: ø6.35 5 m

The total length of each liquid line is as follows:

ø19.05: C = 30 m ø15.88: B + D = 1 + 10 = 11 m ø12.7 : A + E + F = 3 + 5 + 15 = 23 m ø9.52 : a + b + c + d + e = 10 + 5 + 5 + 10 + 15 = 45 m ø6.35 : f = 5 m

Therefore, <Calculation example> Additional refrigerant charge = 30 × 0.29 +11 × 0.25 + 23 × 0.12 +

45 × 0.06 + 5 × 0.024 + 3.0 = 20.1 kg

Value of α

Total capacity of

connecting indoor units

to Model 80 1.0 kg

Models 81 to 160 1.5 kg Models 161 to 330 2.0 kg Models 331 to 480 2.5 kg

Models 481 or more 3.0 kg

Page 15

10.3. Precautions concerning piping connection and valve operation

• Connect piping and operate valves e xactly as described in the figure below.

• After performing the following distributor (gas) connection, remove the con-

necting pipe included with the gas ball valve of the variable capacity unit, and mount the distributor (gas) (optional). 1 When brazing the distributor (gas), braze it outside of the unit before mount-

<When shipped from

the manufacturer>

ing on the variable capacity unit.

2 During the time when removing the connecting pipe with flange, remove

the seal attached on the back side of this sheet and paste it onto the flange surface of the ball valve to prevent the entry of dust into the valve.

3 The refrigerant circuit is closed with a round, close-packed packing at the

shipment to prevent gas leak between flanges. As no operation can be

done under this state, be sure replace the packing with the hollow packing attached at the piping connection.

4 At the mounting of the hollow packing, wipe off dust attached on the flange

sheet surface and the packing. Coat refrigerating machine oil onto both

surfaces of the packing.

• After evacuation and refrigerant charge, ensure that the handle is fully open. If operating with the valve closed, abnormal pressure will be imparted to the high- or low-pressure side of the refrigerant circuit, or a shortage of oil in the compressor may occur due to lack of oil flow between units, giving damage to the compressor, four-w ay valve, etc.

For evacuating, be sure to provide an oil balance pipe between the variable capacity and constant capacity units.

•

• Determine the amount of additional refrigerant charge by using the formula, and charge refrigerant additionally through the service por t after

completing piping connection work.

• After completing work,

shut the service port and cap tightly so that gas leaking does not occur.

• Connect ball valve piping in the order of (oil balance) → (liquid side) → (gas side).

Ball valve

(liquid side)

Ball valve

(gas side)

ENGLISH

Ball valve

(oil balance side)

ø15.88

To distributor

To distributor (liquid)

(liquid)

ø12.7

To constant capacity unit

ø28.6

(Figure shows valve fully open.)

Warning:

Braze the distributor (gas) outside the unit, before mounting distributor (gas)* to ball valve of the variable capacity unit.

- If brazed while mounted, the ball valve is heated and could result in cracking or gas leaks. The wiring inside the unit could also be burned.

Page 16

Replace the solid packing.

Hollow packing

• Connect piping and operate valves e xactly as described in the figure below.

• Gas side connecting piping is already assembled when the equipment is shipped. (See figure

Replace the solid packing.

on right.) 1 When brazing to connecting pipe with flange, remove the connecting pipe with flange from

the ball valve, and braze at the outside of the unit.

2 During the time when removing the connecting pipe with flange, remove the seal attached

on the back side of this sheet and paste it onto the flange surface of the ball valve to pre v ent the entry of dust into the valve.

3 The refrigerant circuit is closed with a round, close-packed packing at the shipment to pre-

vent gas leak between flanges. As no operation can be done under this state, be sure re-

Hollow packing

place the packing with the hollow packing attached at the piping connection.

4 At the mounting of the hollow packing, wipe off dust attached on the flange sheet surface

and the packing. Coat refrigerating machine oil onto both surfaces of the packing.

•

For evacuating, be sure to provide an oil balance pipe between the variable capacity and constant capacity units.

• Determine the amount of additional refrigerant charge by using the formula, and charge refrigerant additionally through the service por t after completing piping connection work.

• After completing work, shut the service port and cap tightly so that gas leaking does not occur.

ENGLISH

D’

Ball valve

(Gas side)

(gas side)

Ball valve

(Liquid side)

(liquid side)

Ball valve

(Oil balance side)

(oil balance side)

The unit is set vertically between

the compressor and control box.

Fastening plate

MP35K

Fastening plate

ø28.6

ø12.7

ø12. 7

To distributor

(liquid)

H’

To variable capacity unit

ø12.7

To distributor (gas) inside

variable capacity unit

(Figure shows valve fully open.)

Warning:

Be sure to remove the connecting pipe from the ball valve, and braze it outside the unit.

- If brazed while mounted, the ball valve is heated and could result in cracking or gas leaks. The wiring inside the unit could also be burned.

Page 17

A Valve stem

[Fully closed at the factory , when connecting the piping, when evacuating, and when charging additional refrigerant. Open fully after the operations above are completed.]

B Stopper pin [Prevents the valve stem from turning 90° or more.] C Packing (accessory) D Distributer (gas) (option)

[Mount packing (accessory) securely to the valve flange so that gas does not leak. (Screw tightening torque: 43 N·m (430 kg·cm)) Apply a coat of refrigerating machine oil to both surfaces of the packing.]

D’ Connecting pipe (accessory)

[Use packing and securely install this pipe to the valve flange so that gas leakage will not occur. (Tightening torque: 25 N·m (250 kg·cm)) Coat both surfaces of the packing with refrigerator oil.]

E Open (operate slowly) F Cap, copper packing

[Remove the cap and operate the valv e stem. Alwa ys reinstall the cap after operation is completed. (Valve stem cap tightening torque: 25 N·m (250 kg·cm) or more)]

G Service port

[Use this port to evacuate the refrigerant piping and add an additional charge at the site. Open and close the port using a double-ended wrench. Always reinstall the cap after operation is completed. (Service port cap tightening torque: 14 N·m (140 kg·cm) or more)]

H Flare nut

[Tightening torque: 80 N·m (800 kg·cm) ··· liquid, 55 N·m (550 kg·cm) ··· oil blance Loosen and tighten this nut using a double-ended wrench. Coat the flare contact surface with refrigerator oil.]

H’ Flare nut

[Tightening torque: 55 N·m (550 kg·cm) Use a double spanner to open and close. Apply a coat of refrigerating machine oil to the flare bonding surface.]

I ø38.1 (PUHY-600YSMF-B)

ø44.5 (PUHY-650/700/750YSMF-B)

J Field piping

[Braze to the connecting pipe. (When brazing, use unoxidized brazing.)]

Appropriate tightening torque by torque wrench

Copper pipe external dia. (mm) Tightening torque (N·m) / (kg·cm)

ø6.35 14 to 18 / 140 to 180 ø9.52 35 to 42 / 350 to 420

ø12.7 50 to 57.5 / 500 to 575 ø15.88 75 to 80 / 750 to 800 ø19.05 100 to 140 / 1000 to 1400

Tightening angle standard

Pipe diameter (mm) Tightening angle (°)

ø6.35, ø9.52 60 to 90

ø12.7, ø15.88 30 to 60

ø19.05 20 to 35

ENGLISH

Note: If a torque wrench is not available, use the following method as a standard. When you tighten the flare nut with a wrench, y ou will reach a point where the tightening torque will abrupt increase. Turn the flare nut beyond this point by the angle shown in the table above.

Caution:

Always remove the connecting pipe from the ball v alve and braze it outside the unit.

- Brazing the connecting pipe while it is installed will heat the ball valve and cause trouble or gas leakage. The piping, etc. inside the unit may also be burned.

Page 18

10.4. Oil balance pipe connection method

• Oil balance piping can be took out from the front, bottom or side of the unit (left side for the variable capacity unit, right side for the constant capacity unit).

• Connect piping and operate valves exactly as described below (for details, see item 10.3.).

1 After connecting oil balance pipe, be sure to evacuate using the service port of the variable capacity unit side valve. 2 After evacuating, be sure to fully open each valve stem. If you operate with the valve closed, a shortage of oil in the compressor may occur due

to lack of oil flow between units, which could result in damage to the compressor.

3 After completing work, shut the cap of the service port and handle section tightly so that gas leaking does not occur.

Warning:

Failure to connect the oil balance pipe will result in the compressor being damaged.

• Provide 10 mm of clearance between the variable capacity and constant capacity units. Position the variable capacity unit so that its front is facing on the right side and the constant capacity unit so that its front is facing on the left. Connect the oil balance pipe f or the optional CMC-30A according to the following procedure.

1 Open the knock-out holes of the left side panel for the variable capacity unit, and the right side panel for the constant capacity unit. 2 After installing the units, flare-connect the piping included with the unit (ø12.7). 3 Block the clearance between units with the 2 seals included with the constant capacity unit.

10 mm (clearance between units)

Right side panel

ENGLISH

(Constant capacity unit)

Right side panel

Left side panel

(Variable capacity unit)

Ball valve (oil balance)

ø12.7 (flare)

Oil balance pipe 1 (optional)

Through holes for oil balance pipe

and transmission cables

Control box Control box

Compressor

Seal material (2 pieces, included)

Oil balance pipe

(field supply)

Control boxControl box

Oil balance pipe 2

(optional)

Flare connection (2 places)

Tightening torque is 55 N·m (550 kg·cm)

Tightening torque is 55 N·m (550 kg·cm).

Open and close using a double

spanner. Apply a coat of refrigerating

machine oil on both sides of the flare

machine oil on both sides of the flare contact surface.

contact surface.

Ball valve (oil balance)

ø12.7 (flare)

• If the oil balance piping for the constant capacity unit from the front of the unit is took out, bend the piping as shown in the figure below . (When doing

so, be careful not to the piping doesn’t touch the compressor or other parts.)

Front panel

Ball valve (oil balance)

Knock-out holes for

taking out oil balance pipe

from front surface

Compressor

Control box

Ball valve (oil balance)

ø12.7 (flare)

(Constant capacity unit)

Oil balance pipe (Bend piping at the site.)

Oil balance pipe (Bend piping at the site)

Page 19

10.5. Distributor (gas) connection

method

■ Taking out piping from the front direction (1) Remove the copper cap and rubber packing attached to the pip-

ing and flange of the distributor (gas) (optional).

(2) Assemble outside the unit with the elbow (8) in the specified

shape and braze. (see Fig. 1.) For the 600 type, braze the connecting pipe (7) also.

Brazing

8Elbow

Elbow

7Connecting pipe

8Elbow

Elbow

(3) Braze the connecting pipe (4) and piping assembled in step (2)

to the distributor (gas) so that the connecting pipe is attached as shown in Fig. 2. For assembly procedure, see Fig. 3. When brazing piping, cool the brazed portion of the distributor side piping with a dampened waste cloth to prevent heating by brazing.

Flange

Connecting pipe

Fig. 1

■ Taking out piping in the downward direction (1) Remove the copper cap and rubber packing attached to the pip-

ing and flange of the distributor (gas) (optional).

(2) Assemble outside the unit with the elbow (8), connecting pipe

(7 for 600 type), or connecting pipe (6 for types other than 600) in the specified shape and braze. (see Fig. 4.)

Brazing

(3) Braze the connecting pipe (5) and connecting piping assembled

in step (2) to the distributor (gas) outside the unit. For assembly procedure, see Fig. 5. When brazing piping, cool the brazed portion of the distributor side piping with a dampened waste cloth to prevent heating by brazing.

8Elbow

7Connecting pipe

For 600 : 7Connecting pipe

For 600

For other than 600: 6Connecting pipe

For other than 600

Fig. 4

: :

6Connecting pipe

ENGLISH

Connecting

4Connecting

pipe

Elbow assembly

4Connecting pipe

Connecting pipe

Flange

Fig. 2

Distributor (gas)

Fastening plate

Distributor (gas)

5Connecting pipe

Connecting pile

Flange

Fastening plate

Distributor (gas)

Fig. 5

The rest of the procedure is the same as for “Running piping from front direction”.

Caution:

When brazing, cool with a waste cloth dampened with water so that the flange and ends of the distributor side piping don’t get heated.

- Part could be damaged if not cooled sufficiently.

Fig. 3

(4) Connect the ø12.7 oil balance pipe to the ball valve of the vari-

able capacity unit (oil balance) and constant capacity unit.

(5) Connect the ø15.88 piping branched by the distributor (liquid) to

the ball valve of the variable capacity unit (liquid side).

(6) Insert the distributor (gas) into the variable capacity unit and con-

nect to the flange of the ball valve (gas side). (Use a socket wrench and socket wrench extension.) When doing so, be sure to mount the included packing between the ball valve (gas side) and flange of the distributor.

(7) Fasten the plate of the distributor (gas) to the frame of the unit

with screws.

(8) Connect and braze the ø44.45 (ø38.1 for 600 type) gas piping

(main pipe) and ø28.58 gas pipe that connects the constant capacity unit with the distributor (gas).

Page 20

10.6. How to install branch pipe

For detail, please observe the instruction manual attached to the optional refrigerant branch kit.

■ Joint

A To outdoor unit B To branch piping or indoor unit

• Apart from the CMY -Y202-F and CMY-Y302-F gas side, there are no restrictions on the posture for attaching joints.

• Ensure that the branch pipes for the CMY-Y202-F and CMY-Y302-F gas side are attached horizontally or facing upwards (see the diagram below).

ENGLISH

Horizontal Facing upwards

(Facing downwards is not possible)

Within ±15° Within ±15°

Within ±15°

C Pipe cutter D or E Deformed joint

• When the number of pipes to be connected is smaller than the number of header branches, install a cap to the unconnected branches. The cap is included with the kit.

■ Distributer (liquid)

Field piping

Variable

capacity unit

capasity unit

• Mount the distributor (liquid, optional CMC-30A) so that it is within ±15° in relation to the horizontal plane (see figure above).

Constant

capacity unit

capasity unit

±15°

• There is no limitation on the joint mounting configuration.

• If the diameter of the refrigerant piping selected by the procedures

described on pages 13 to 14 is different from the size of the joint, match the sizes using a deformed joint. The deformed joint is included with the kit.

■ Header

A To outdoor unit B To indoor unit

• No restriction is applied to the mounting posture of the header.

• If the diameter of the refrigerant piping selected using the proce-

dures described on pages 14 and the size of the joint is different, match the sizes using a deformed joint. The deformed joint is included with the kit.

Page 21

10.7. Airtight test and evacuation

1 Airtight test

Airtight test should be made by pressurizing nitrogen gas to 3.0 MPa. For the test method, ref er to the follo wing figure. (Make a test with the ball valve closed. Be also sure to pressurize both liquid pipe and gas pipe.) The test result can be judged good if the pressure has not bee reduced after leaving for about one day after completion of nitrogen gas pressurization.

A Nitrogen gas B To indoor unit C System analyzer D Lo knob E Hi knob F Ball valve G Liquid pipe H Gas pipe I Outdoor unit J Service port

2 Evacuation

Evacuation should be made from the service port provided on the outdoor unit’s ball valve to the vacuum pump commonly used f or both liquid pipe and gas pipe. (Make evacuation from both liquid pipe and gas pipe with the ball valve closed.) Also evacuate the oil balance pipe that connects the variab le capacity and constant capacity units with the oil balance ball valves of both units shut. Evacuate from the service port of the variable capacity unit ball valve with a vacuum pump. * Never perform air purging using refrigerant.

LO HI

H I

ENGLISH

LO HI

A System analyzer B Lo Knob C Hi Knob D Ball valve E Liquid pipe F Gas pipe G Service port H Three-way joint I Valve

Note: Always add an appropriate amount of refrigerant. (For the refrigerant additional charge, see pa ges 13 to 14.) T oo muc h or too little refrigerant will cause trouble. Note that it is not possible to determine if a correct amount is being used with the accumulator level (AL).

J Valve K Freon 22 cylinder L Scale

Use a graviometer. (One that can measure down to 0.1 kg.) If you are unable to prepare such a high-precision gravimeter, you may use a charge cylinder.

M Vacuum pump N Constant capacity unit side O Oil balance pipe P Variable capacity unit side

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.

Page 22

10.8. Thermal insulation of refrigerant piping

Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough thickness heat-resistant polyethylene, so that no gap is observed in the joint between indoor unit and insulating material, and insulating materials themselves. When insulation work is insufficient, there is a possibility of condensation drip, etc. Pay special attention to insulation work to ceiling plenum.

Heat

insulation

material A

Outer

covering B

Note: When using polyethylene cover as co vering material, asphalt r oofing shall not be required.

Glass fiber + Steel wire Adhesive + Heat - resistant polyethylene foam + Adhesive tape Indoor Vinyl tape Floor exposed

Outdoor

Water-proof hemp cloth + Bronze asphalt Water-proof hemp cloth + Zinc plate + Oily paint

A Steel wire B Piping C Asphaltic oily mastic or asphalt D Heat insulation material A E Outer covering B

ENGLISH

• Do not insulate gas or low pressure pipe and liquid or high pressure pipe together.

Bad example

Good example

Note: No heat insulation must be provided for electric wires.

A Liquid pipe

B Gas pipe C Electric wire

D Finishing tape E Insulating material

A Liquid pipe

B Gas pipe D Finishing tape

E Insulating material

• Be sure to fully insulate connecting portion.

A These parts are not insulated.

Page 23

Penetrations

Inner wall (concealed) Outer wall Outer wall (exposed)

Floor (fireproofing) Roof pipe shaft Penetrating portion on fire limit and boundary wall

A B

1m1m

A Sleeve B Heat insulating material C Lagging D Caulking material E Band F Waterproofing layer G Sleeve with edge H Lagging material

Branch piping section

Insulate the header using the insulation material attached to the branch pipe kit as shown in the figure.

I Mortar or other incombustible caulking J Incombustible heat insulation material

When filling a gap with mortar, cover the penetration part with steel plate so that the insulation material will not be caved in. For this part, use incombustible materials for both insulation and covering. (Vin yl cov ering should not be used.)

ENGLISH

Page 24

11. Electrical work

11.1. Caution

1 Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each

electric power company.

Warning:

Be sure to have authorized electric engineers do electric work using special circuits in accordance with regulations and this installation manual. If power supply circuit has a lack of capacity or electric work deficiency, if may cause an electric shock or fire.

2 Install the outdoor unit transmission line away from the power source wiring so that it is not affected by electric noise from the power source. (Do not

run it through the same conduit.)

3 Be sure to provide designated grounding work to outdoor unit.

Caution:

Be sure to put outdoor unit to earth. Do not connect earth line to any gas pipe, water pipe, lightning rod or telephone earth line. If earth is incomplete, it may cause an electric shock.

4 Give some allowance to wiring for electrical part box of indoor and outdoor units, because the box is sometimes removed at the time of service work. 5 Never connect the main power source to terminal block of transmission line. If connected, electrical parts will be burnt out. 6 Use 2-core shield cable for transmission line ( mark in the figure below). If transmission lines of different systems are wired with the same

multiplecore cable, the resultant poor transmitting and receiving will cause erroneous operations (× mark in the figure below).

7 Only the transmission line specified should be connected to the terminal block for outdoor unit transmission.

(Transmission line to be connected with indoor unit: Terminal block TB3 for transmission line, Other: Terminal block TB7 for centralized control) Erroneous connection does not allow the system to operate.

8 In case to connect with the upper class controller or to conduct group operation in different refrigerant systems, the control line for transmission is

required between the outdoor units each other.

ENGLISH

Connect this control line between the terminal blocks for centralized control. (2-wire line with no polarity) When conducting group operation in different refrigerant systems without connecting to the upper class controller, replace the insertion of the short circuit connector from CN41 of one outdoor unit to CN40.

9 Group is set by operating the remote controller. 0 Caution! If the electrical wiring connections (L1, L2, L3, N ) are made incorrectly, damage to the unit could result.

TB3

TB7

TB3

TB7

TB3: Transmission line terminal board, TB7: Central control line terminal board

A Outdoor unit B 2-core cable C Indoor unit D Remote controller E Multi-core cable

TB3

TB7

Page 25

11.2. Control box and connecting position of wiring

a. Variable capacity unit

1. Remove the total of six screws at the top and bottom, and remove

the service panel by pulling it forward. (See the figure below.)

3. Connect indoor and outdoor units through the terminal block for transmission lines (TB3). Outdoor units and connections to central control systems go through the terminal block for centralized control (TB7). When making an indoor/outdoor connection with shielded wiring, connect the shield ground to the shield screw. When making a central control system connection with shielded wiring, use the terminal block for centralized control (TB7). When the CN41 power supply connector of an outdoor unit has been replaced with a CN40, the shield terminal (S) for centralized control (TB7) should also be connected to the shield screw.

4. How to use the conduit mounting plate

(1) Conduit mounting plates (ø46, ø53, ø62) are being provided.

Select conduit mounting plate based on the outside diameter of conduit to be used and mount it as shown in the figure.

(2) Fix power source wiring to control box by using buffer bushing for

tensile force (PG connection or the like).

A Service panel

2. Remove the two screws on the left and right-hand of the base of the control box and pull the overall co ver do wnwards to detach it. (A diagram with the control box cover removed is shown below.)

LD1

CD A

L1 L2 L3

TB1

GHI

A INV board B MAIN board C Ten position D One position E Address switch F FANCON board G Power source H Shield screw I Transmission line J RELAY board K Shield terminal (S)

M1 M2M1 M2 S

TB7TB3

Tensile force

knockout hole

To prevent external tensile force from applying to the wiring connection section of power source terminal block, use buffer bushing like PG connection or the like.

A ø46 mounting hole B ø53 mounting hole C ø62 knockout hole D For the connection of conduit at bottom E ø62 mounting hole F For the connection of conduit at front G The front of outdoor unit

b. Constant capacity unit

1. The service panel is removed by removing the six screws at the top and bottom and pulling it forward. (See figure below.)

ENGLISH

Service panel

Page 26

2. The control box cover is remov ed by removing the 2 scre ws and pulling downward. (The control box with the cover removed is shown in the figure below.)

3. Method of using conduit mounting plate The equipment includes conduit mounting plates (ø27, ø33, ø40).

Select the mounting plate according to the diameter of the conduit used, and mount as shown in the figure below.

If conduit is connected

from the front

4 o

0 c

Tapping screw

If conduit is connected from the bottom

Unit front

ENGLISH

4. Wiring connection Connect indoor unit crossover cables of the transmission cables ter-

minal block (TB3) of the variable capacity unit to the transmission cables terminal block (TB3). When making an indoor/outdoor connection with shielded wiring, connect the shield ground to the shield terminal (TB3).

10 1

Address

CONT. board

L1 L2 L3 N

M1 M2 S

Controlbox

Power

terminal block

(TB1)

Transmission

cables terminal block

(TB3)

c. Transmission booster (optional)

(For details, see item 11.3. “Wiring transmission cables”)

Connect 220/230/240 VAC to L/N of power terminal block (TB1). Connect the ground to the

terminal of power terminal block (TB1). Connect the outdoor unit side transmission cables to A/B of transmission cables terminal block 1 (TB2). Connect the outdoor unit side shield to S of transmission cables terminal block 1 (TB2). Connect additional indoor unit side transmission cables to A/B of transmission cables terminal block 2 (TB3). Connect additional indoor unit side shield to S of transmission cables terminal block 2 (TB3).

Power terminal block (TB1) and Earth

TRANSMISSION BOOSTER

MODEL

PAC-S F46E PA

POWER RATING

WEIGHT

MADE IN JAPAN

220-240V:0.7A ~/N

3.4kg

Transmission cables terminal block 2 (TB3)

Transmission cables terminal block 1 (TB2)

Page 27

11.3. Wiring transmission cables

Wiring method, address setting method and permissible wiring length differ according to and whether or not you are using transmission booster. Chec k permissible wiring length before wiring. A may be required depending on the number of indoor units. Item 4 “Wiring examples” gives typical wiring examples (a to c).

a. System using remote controller (1 outdoor unit) b. System using remote controller (system operated as a group among multiple refrigerant systems) c. System using power supply extension unit for transmission booster (combination of systems a to b)

1 Connecting a transmission booster

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.

(*1) Capability of the connected indoor units

*1 If even one unit that is higher than 200 exists in the cooling system, the maximum capacity will be “200 or higher”.

2 Name, code and possible unit connections

Name Code Possible unit connections Outdoor unit Indoor unit

Remote controller Other

*1 A transmission booster (RP) may be required depending on the number of connected indoor unit controllers.

Variable capacity unit controller Constant capacity unit controller Indoor unit controller Remote controller (*1) Transmission booster unit

Number of connected indoor units that can be connected without a RP

200 or lower

200 or higher

The number of indoor units and the total number of remote controllers is displayed within the parenthesis ( ).

Remote controller type

1 unit per 1 OC

2 to 32 units per 1 OC (*1)

2 units maximum per group

0 to 1 unit per 1 OC (*1)

–

Remote controller PAR-F 25MA

Prior to Ver. E After Ver. F

16 (32) 20 (40) 16 (32) 16 (32)

ENGLISH

3 Types of control cables

(1) Wiring transmission cables

• Types of transmission cables Shielding wire CVVS or CPEVS

• Cable diameter More than 1.25 mm

• Maximum wiring length within 200 m

(2) Remote control cables

Kind of remote control cable 2-core cable (unshielded) Cable diameter 0.5 to 0.75 mm

Remarks

4 Wiring examples

Typical wiring examples are shown on pages 28 to 32 (Wiring examples A to C).

When 10 m is exceeded, use cable with the same specifications as (1) Transmission line wiring.

Page 28

A. Example of the use of the shielded cable in a single coolant system (Setting of addresses is necessary)

Example of control line wiring Wiring method, address setting

1) Standard

(52)

TB3

M1 M2 S

Shielded cable

(51)

TB3 TB7

M1M2

M1M2 S

• One remote control unit for each indoor unit.

ENGLISH

Within ( ): Address

2) 2 Remote control operation

OCOS

(52)

TB3

M1 M2 S

(51)

TB3 TB7

M1M2

M1M2 S

TB5

M1M2 S

TB6

(101)

TB5

M1M2 S

(01)

TB13

123

TB13

123

(02)

TB5

TB13

M1M2 S

123

TB6

(102)

(02)

TB5

TB13

M1M2 S

123

Remote control

Variable capacity

Constant capacity

Note 1. Note 2.

a. Same as above b. Same as above c. Set the address setting switch as shown in the fol-

Main remote

Sub remote

Shielded cable

• 2 remote control units for 1 indoor unit.

3) Group operation

TB6

(101)

(Main remote

controller)

TB6

(151)

(Sub remote

controller)

TB6

(102)

(Main remote

controller)

TB6

(152)

(Sub remote

controller)

Variable capacity

Constant capacity

Notes 1, 2. Same as above a. Same as above

b. Connect terminals A and B (M1 and M2) of the trans-

(52)

TB3

M1 M2 S

Shielded cable

(51)

TB3 TB7

M1M2

M1M2 S

IC (Main) IC (Sub)

(01)

TB5

TB13

M1M2 S

123

TB6

(101)

TB5

M1M2 S

(02)

TB13

123

c. Set the address setting switch as shown in the fol-

d. Within the same group, let the indoor unit (IC) which

Main remote

Sub remote

Variable capacity

Constant capacity

• Operation of multiple indoor units with 1 remote controller.

Notes 1, 2. Same as above

1) ~ 3) above can be combined.

Run the wire to terminals M1 and M2 the variable capacity unit (OC) transmission line terminal block (TB3) and to terminals M1 and M2 on the constant capacity unit (OS) transmission line terminal block (TB3) as well as to the terminals M1 and M2 of the transmission line terminal block (TB5) of each indoor unit (IC). (Two-wire, no polarity) Also, run the shielded ground wire to the ground terminal of the variable capacity unit, the S terminal of the constant capacity unit (TB3), and the S terminal of each indoor unit (TB5). Connect the wires to terminals M1 and M2 of the transmission line terminal block (TB5) in each indoor unit (IC) and connect them to the remote control (RC) terminal block (TB6). Set the address setting switch as shown in the following table.

Unit

Indoor unit

unit

Range

01 to 50

101 to 150

Note 2

51 to 100

Note 1

51 to 100

Note 1

Setting method

—

Indoor unit address + 100 The smallest address of

the indoor units + 50 Variable capacity unit ad-

dress + 1

If the address of the variable capacity unit or the constant capacity unit is set at 100, set one of the address switches at 01 ~ 50. It is not necessary to set the 100’s position in the remote control unit.

lowing table.

Unit

Indoor unit

controller

unit

Range

01 to 50

101 to 150

Note 2

151 to 200

Note 2

51 to 100

Note 1

51 to 100

Note 1

Setting method

—

Indoor unit address + 100

Indoor unit address + 150 The smallest address of the

indoor units + 50 Variable capacity unit ad-

dress + 1

mission line terminal block (TB5) of the indoor unit (IC Main) with the lowest address of all the indoor units (IC) in the same group and the terminals on the remote control (RC) terminal block (TB6).

lowing table.

functions the most be the IC (Main) unit.

Unit

Range

Setting method

Address of the indoor unit

IC (Main)

01 to 50

with the smallest address of all the indoor units in the same group

Address of any of the indoor units except the address of the

IC (Sub)

01 to 50

IC (Main) Let the number be in sequence

with that of the IC (Main)

controller

unit

101 to 150

151 to 200

51 to 100

Address of the IC (Main) in

Note 2

the same group + 100 Address of the IC (Main) in

Note 2

the same group + 150 The smallest address of the

Note 1

indoor units + 50 Variable capacity unit ad-

Note 1

dress + 1

Page 29

Permissible length Prohibited items

Length of the wire to the most remote indoor unit in the system (1.25 mm2) L1 + L2, L2 + L3, L3 + L1 = 200 m Remote control wire length 1 In the case of 0.5 to 0.75 mm2 wire,

r1 , r2 = 10 m

2 If the length exceeds 10 m, use

1.25 mm2 wire and let the length be within the length of the wire to the most remote indoor unit in the system (L3).

Same as above

(52)

TB3

M1 M2 S

OCOS

(51)

TB3 TB7

M1M2

M1M2 S

TB5

M1M2 S

(01)

TB13

123

TB5

M1M2 S

(02)

TB13

123

ENGLISH

Shielded cable

•

Let the address of the sub remote controller be the indoor unit (IC) address + 150. In this case, the address would be 152.

TB6

(101)

RC RC RC RC

(Main remote

controller)

TB6

(151)

(Sub remote

controller)

TB6

(102)

(Main remote

controller)

TB6

(103)

(Sub remote

controller)

(152)

TB6

(104)

• More than 3 remote control (RC) units cannot be connected to one indoor unit.

Same as above

(52)

TB3

M1 M2 S

Shielded cable

(51)

TB3 TB7

M1M2

M1M2 S

IC (Main) IC (Sub)

(01)

TB5

TB13

M1M2 S

123

TB6

(102)

(101)

TB5

M1M2

(02)

TB13

123

• The remote controller address is the indoor unit main address + 100. In this case, it is 101.

Note:

1. If there is one or more 200 or higher indoor units within the same cooling system, and the number of indoor units exceeds 16 units, a transmission booster is necessary (when a “PAR-F25MA Ver. F” or subsequent version of remote control is used).

2. If there is not even one 200 or higher indoor unit within the same cooling system, and the number of indoor units exceeds 20 units, a transmission booster is necessary (when a “PAR-F25MA Ver. F” or subsequent version of remote control is used).

* For details, see wire connection example C.

Page 30

B. Example of the use of the shielded cable in a system with group operation among multiple outdoor units (Setting of addresses is necessary)

ENGLISH

Example of transmission line wiring

Group 1 Group 3 Group 5

(54)

TB3

M1 M2 S

(53)

TB3

M1 M2 S

(51)

TB3

M1 M2

Shielded cable

(52)

TB3

M1 M2

CN40

M1M2S

TB7

L5 L6 L7

M1M2 S

TB7

Group 1 Group 3 Group 5

(01)

TB5

M1M2 S

TB6

(101)

(02)

TB5

M1M2 S

L2 L3 L4

(04)

TB5

TB13

123

TB13

123

M1M2 S

TB5

M1M2 S

(03)

TB13

123

TB13

123

M1M2 S

TB5

TB6

(105)

TB5

M1M2 S

(05)

TB13

123

(Sub remote

(07)

TB13

123

TB6

(155)

(Sub remote

controller)

TB5

M1M2 S

(06)

TB13

123

TB6

(103)

Within ( ): Address

a. Be sure to use shielded cable for wiring between the outdoor units (OC and OS) and indoor units (IC), between OC and OC and between IC

and IC.

b. Terminals M1 and M2 and the ground terminal of the transmission line terminal block (TB3) of each variable capacity unit (OC), terminals

M1, M2 and S of the transmission line terminal block (TB3) of the constant capacity unit (OS) and terminals M1, M2 and S of the transmission line terminal block (TB5) of each indoor unit (IC) should be cross wired.

c. Connect the M1 and M2 terminals of the transmission line terminal block (TB5) of the indoor unit IC (Main) with the smallest address within

the same group to the remote control (RC) terminal block (TB6).

d. Connect terminals M1, M2 and S of the centralized control terminal block (TB7) of the variable capacity unit (OC) and the terminals M1, M2

and S of the centralized control terminal block (TB7) of the variable capacity unit (OC) of the other cooling systems.

e. The power supply connector on the main board can be changed from CN41 to CN40 for only one variable capacity unit (OC).

f. Connect the S terminal of the centralized control terminal block (TB7) of the variable capacity unit (OC) which had its power supply connec-

tor connected to CN40 in e to the ground terminal in the electrical equipment panel.

g. Group settings between multiple cooling systems should be performed after the power is turned on using the remote control (RC) units. F or

the setting method, refer to the installation manual for the remote control unit.

Unit Range Setting method

IC (Main) 01 to 50 Smallest address of all the indoor units (IC) in the same group

IC (Sub) 01 to 50

Address other than the IC (Main) of the indoor units in the same group Use a number which is in sequence with that of the IC (Main)

Main remote controller 101 to 150 Note 2 IC (Main) + 100

Wiring method, address setting method

Sub remote controller 151 to 200 Note 2 IC (Main) + 150 Variable capacity unit 51 to 100 Note 1 The smallest address of the indoor units in the same cooling system + 50

Constant capacity unit 51 to 100

Notes 1, 3

Variable capacity unit address + 1

Note:

1. If the address of the variable capacity unit or the constant capacity unit is set at 100, set the address setting s witch at either 01 or

50.

2. It is not necessary to set the 100’s position on the remote control unit.

3. If the addresses overlap with the variable capacity unit of other cooling systems, select a different unused address.

Page 31

• Length of wire to the most remote unit via the outdoor unit:L1+L2+L3+L4+L5+L6+L7+L9, L1+L2+L3+L4+L5+L6+L8+L9 = 500 m (1.25 mm2)

• Length of wire to the most remote unit via the indoor system: L

• Remote control wire length:r

1, r2, r3, r4

10 m (0.5 to 0.75 mm2)

1+L2+L3+L4, L5+L6+L7, L5+L6+L8, L7+L8

If the length exceeds 10 m, use 1.25 mm2 wire and calculate the length of that portion (L8) as within the total

Permissible length

extended length and the length to the most remote unit.

200 m (1.25 mm2)

Prohibited items

(54)

TB3

M1 M2 S

(53)

TB3

M1 M2 S

OC CN40

(51)

TB3

M1 M2

Shielded cable

(52)

TB3

M1 M2

M1M2S

TB7

M1M2 S

TB7

Group 1 Group 3 Group 5

Group 1 Group 3

TB5

M1M2 S

TB6

(101)

TB5

M1M2 S

(01)

(02)

TB13

123

TB13

123

TB5

M1M2 S

TB5

M1M2 S

(04)

(03)

TB13

123

TB13

123

TB5

M1M2 S

TB6

(105)

M1M2 S

TB5

(05)

TB13

123

(07)

123

(155)

TB13

Group 5

TB6

TB5

M1M2 S

(06)

TB13

123

ENGLISH

TB6

(103)

• Connect the S terminal of the centralized control terminal block (TB7) of one variable capacity unit only to the ground of the electrical

equipment panel.

• The transmission line terminal blocks (TB5) of indoor units (IC) connected to different cooling systems should not be connected together.

Note:

* For details, see wire connection example C.

Page 32

C. Example of a system using the transmission booster (Combination of systems A to C)

TB3

M1 M2 S

M1 M2

Example of transmission line wiring

a. Address settings are the same as for wiring connection examples A and B. b. Let the number of indoor units and remote control units connected be within the limit for the number of units shown in the following table for

ENGLISH

the total of the number of units connected between the variable capacity unit (OC) and the transmission booster (RP) N1 and the number of units connected after the transmission booster (RP) N2.

c. Connect the power supply ground to the transmission booster (RP) securely.

Connect the transmission lines of the outdoor unit side to terminals A and B of transmission line terminal block 1 (TB2) of the transmission booster (RP). Connect the transmission lines of the expansion indoor unit side to terminals A and B of the of transmission line terminal block 2 (TB3) of the transmission booster (RP).

(*1) Capability of the connected indoor units

Wiring method, address setting method

*1 If even one unit that is higher than 200 exists in the cooling system, the maximum capacity will be “200 or higher”.

• Indoor system maximum remote wiring length: 1 L1+L2+L3+L5+L6 = 200 m (1.25 mm2)

• Remote control wiring length:r1, r2 = 10 m (0.5 to 0.75 mm2)

Permissible length

TB3

OCOS

TB5

M1M2 S

Number of connected indoor units that

can be connected without a RP

200 or lower

200 or higher

L2 L3 L5 L6

Ground

123

TB13

TB5

TB13

M1M2 S

123

TB6

Remote controller type

TB2

ABS

TB3

ABS

Remote controller PAR-F 25MA

Prior to Ver. E After Ver. F

16 (32) 20 (40) 16 (32) 16 (32)

TB5

M1M2 S

TB6

TB13

123

TB5

M1M2 S

TB13

123

The number of indoor units and the total number of remote controllers is displayed within the parenthesis ( ).

2 L1+L2+L3+L5+L7 = 200 m (1.25 mm2) 3 L1+L2+L4 = 200 m (1.25 mm2) 4 L6+L5+L3+L4, L4+L3+L5+L7 = 200 m (1.25 mm2)

If the length exceeds 10 m, use 1.25 mm2 shielded cable and calculate the length of that portion (L4 and L7) as within the total extended length and the longest remote length.

TB3

M1 M2 S

TB3

M1 M2

OCOS

TB5

M1M2 S

TB13

123

TB5

M1M2 S

TB13

123

TB2

AB S

TB3

AB S

Ground

TB5

M1M2 S

123

TB13

TB5

M1M2 S

Prohibited items

TB6

• Do not mistake the connection locations of transmission booster (RP) transmission line terminal block 1 (TB2) and transmission line terminal block 2 (TB3). (Operation will not be normal in such a case.)

• Do not connect the S terminals of transmission line terminal block 1 (TB2) and transmission line terminal block 2 (TB3) of the transmission booster (RP) together.

TB13

123

Page 33

11.4. Wiring of main power supply and equipment capacity

Warning:

• Be sure to use specified wires to connect so that no external force is imparted to terminal connections. If connections are not fixed firml y , it may cause heating or fire.

• Be sure to use the appropriate type of overcurrent protection s witch. Note that generated o vercurrent may inc lude some amount of direct current.

Caution:

• 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.

• Some installation site may require attachment of an earth leakage breaker. If no earth leakage breaker is installed, it ma y cause an electric shock.

• Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large capacity may cause a malfunction of unit or fire.

Schematic drawing of wiring (example)

ENGLISH

Note 1,2

Note:

1. The transmission booster may be required according to the number of indoor units connected. (For details, see item 11.3. “Wiring transmission cables”)

2. For switch capacity, see the installation manual for transmission booster.

A Power supply (3-phase, 4-wire) 380/400/415 volt B Switch C Variable capacity unit C’ Constant capacity unit D Ground

Thickness of wire for main power supply and on/off capacities (example)

Model

PUHY-400 PUHY-500

unit

Outdoor

Total operating current of the indoor units

1. Use a separate power supply for the outdoor unit and indoor unit.

2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections.

3. The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker consideration of voltage drops.

Make sure the power-supply voltage does not drop more than 10%.

4. Specific wiring requirements should adhere to the wiring regulations of the region.

5. Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord (design 245

IEC57). For example, use wiring such as YZW.

6. The total operating current of the indoor units may fluctuate depending on the operating status of the indoor units. In order to prevent

malfunctions, use a circuit breaker with a current of about 20% more than that listed in the specifications.

PUHN-200 PUHN-250

Model

16 A or less 25 A or less 32 A or less

Transmission booster

Minimum wire thickness (mm2)

Main cable

10.0

16.0

4.0

6.0

Main cable

1.5

2.5

4.0

Branch

– – – –

Wire thickness (mm2)

Branch

1.5

4.0

Ground

10.0

16.0

4.0

6.0

1.5

4.0

Switch (A)

Capacity

63 63 32 40

Switch (A)

Capacity

16 25 32

E Power supply (single-phase) 220/230/240 volt F 1.5 mm G Pull box H Indoor unit

Fuse

63 63 32 40

Fuse

16 25 32

or more

Breaker for wiring (NFB) Breaker for current leakage

20 A

40 A

Breaker for wiring (NFB) Breaker for current leakage

20 A 30 A 40 A

75 A 100 mA 0.1 sec. or less

30 A 100 mA 0.1 sec. or less

40 A 100 mA 0.1 sec. or less

20 A 30 mA 0.1 sec. or less 30 A 30 mA 0.1 sec. or less 40 A 30 mA 0.1 sec. or less

Page 34

12. T est run

12.1. Checking before getting test run

1 Check to see whether there are refrigerant leakage, and slack of power or transmission cable.

Confirm that 500 V megger shows 1.0 MΩ or more between power supply terminal bloc k and ground. Do not operate in the case of 1.0 MΩ or less. NOTE:

Never carry out megohm check ov er terminal control board. Otherwise the control board would be broken.

12.2. Test run method

ENGLISH

Immediately after mounting the unit or after leaving it turned off for an extended length of time , the resistance of the insulation between the power supply terminal board and the ground may decrease to approx. 1.0 MΩ as a result of refrigerant accumulating in the internal compressor. If the insulation resistance is more than 1.0 MΩ, turning on the main power supply and energizing the crankcase heater for more than 12 hours

will cause the refrigerant to evaporate, increasing the insulation resistance. Check to see whether both gas and liquid valves are fully open. NOTE: Be sure to tighten caps. Check the phase sequence and the voltage between phases. NOTE: If the phase sequence is reversed, an error (4103) may occur when a test run is made, causing the unit to stop. If a transmission booster is connected: Turn transmission booster power on the before turning the outdoor unit’s power on. NOTE 1: If the outdoor unit’s power is turned on first, refrigerant system connection data may not be recognized normally. NOTE 2: If the outdoor unit’s power is turned on first, reset the outdoor unit’s po w er after turning the transmission booster pow er on. T urn on universal pow er supply at least 12 hours before getting test run in order to carry current to crank case heater. If current-carrying hours are too short, it may result in a malfunction of compressor.

–

ON/OFF

1Hr.

˚C

FILTER

CHECK MODE

NOT AVAILABLE

ON OFFCLOCK

TEST RUN

FILTER

CHECK

TEST RUN

CENTRALLY CONTROLLED

STAND BY DEFROST

REMOTE CONTROLLER PAR-F25MA

CHECK

˚C

INDOOR UNIT ADDRESS NO

TEMP. TIMER SET

ON OFF

CLOCK

ERROR CODE OA UNIT ADDRESS NO

A Display panel B Control panel C Cooling/Heating select button 3, 4 D Check code indicator (see note 1) E Test run remaining time indicator (see note 3) F ON/OFF LED (lights up in operation)

Operation procedure

Turn on universal power supply at least 12 hours before getting started → displaying “HO” on display panel for about two minutes. The universal

power supply must be left on for at least 12 hours (with the cr ank case heater turned on). If a transmission booster is connected, turn transmission booster power on the before turning the outdoor unit’s power on.

2 Press [TEST RUN] button twice → displa ying “TEST RUN” on display panel. 3 Press [Cooling/Heating] select button → make sure that air is blo wing out. 4 Press [Cooling/Heating] select button to change from cooling to heating operation, and vice versa → make sure that w arm or cold air is blowing out. 5 Press [Wind] adjust button → make sure that air blo w is changed. 6 Press [Up/Down Wind] or [Louver] button to change wind → Make sure that horizontal or downward blow is adjustable . 7 → Make sure that indoor unit fans operate normally. 8 Make sure that interlocking devices such as v entilator operate normally if any. 9 Press [ON/OFF] button to cancel test run → Stop operation.

NOTE 1:If check code is displayed on remote controller or remote controller does not operate normally, see page 35 or further. NOTE 2:Test run automatically stops operating after two hours by activation of timer set to two hours. NOTE 3:During test run, test run remaining time is displayed on time display section. NOTE 4:During test run, temperature of liquid pipe in indoor unit is displayed on remote controller room temp. display section. NOTE 5:When pressing [Wind] adjust button, depending on the model, “This function is not availab le” may be displayed on remote controller . Ho we ver,

it is not a malfunction.

NOTE 6:If the outdoor temperature is low, the unit may not operate for up to 4 hours.

G Indoor unit liquid pipe temperature indicator (see note 4) H ON/OFF button 9 I Test run indicator J Wind adjust button 6 K Test run button 2 L Air blow adjust button 5

F G

H I

Page 35

12.3. How to cope with test run abnormality

1 A 4-digit check code is displayed on remote controller display panel if unit is stopped due to an abnormality. Check to see causes of that

abnormality.

1. Indoor unit

Check code Abnormality Check code Abnormality

2500 Water leakage abnormality 2502 Drain pump error 2503 Drain sensor error, Float switch on 5101 Air inlet sensor error 5102 Piping sensor error 5103 Piping sensor error in the gas side 6600 Duplicated unit address setting 6602 Transmission error

(Transmission processor hardware error)

2. Outdoor unit a. Variab le capacity unit

Check code Abnormality Check code Abnormality

0403 Serial transmission malfunction 1102 Discharge temperature abnormality 1111 Low pressure saturated temperature abnormality

(Detected by saturated temperature sensor)

1112 Low pressure saturated temperature abnormality

(Detected by liquid level detecting temperature sensor)

1113 Low pressure saturated temperature abnormality

(Detected by liquid level detecting temperature sensor) 1301 Low pressure abnormality 1302 High pressure abnormality 1500 Excessive refrigerant replenishment 1501 Lacked refrigerant abnormality 1505 Low pressure abnormality 4103 Reverse phase 4108 Overload protection (Comp overcurrent) 4115 Power supply simultaneous signal abnormality 4116 Fan speed abnormality (Motor abnormality) 4200 VDC detection circuit error 4210 Overcurrent interruption 4220 Inverter bus line voltage low 4230 Overheat protection of radiator panel 4240 Overcurrent protection 4260 Cooling fan abnormality 5101 Discharge temperature sensor error (TH1) 5102 Low pressure saturated temperature error (TH2) 5103 Liquid surface detecting temperature sensor error (TH3) 5104 Liquid surface detecting temperature sensor error (TH4)

6603 Transmission error (Transmission route BUSY) 6606 Transmission and reception error

(Communication trouble with transmission processor) 6607 Transmission and reception error (No ACK error) 6608 Transmission and reception error (No responsive frame

error) 7101 Capacity code error 7111 Remote controller sensor error

5105 Piping temperature sensor error (TH5) 5106 Outdoor temperature sensor error (TH6) 5107 Subcool coil liquid outlet temperature sensor error (TH7)

5108 Subcool coil bypass outlet temperature sensor error

(TH8) 5109 Sub cool coil bypass inlet temperature sensor error (TH9) 5110 5112 Gas pipe sensor error (TH10a) 5113 Gas pipe sensor error (TH10b) 5201 High-pressure sensor (HPS) error 5301 IDC sensor circuit error 6600 Duplicated unit address setting 6602 Transmission error (Transmission processor hardware

6603 Transmission error (Transmission route BUSY) 6606 Transmission and reception error

6607 Transmission and reception error (No ACK error) 6608 Transmission and reception error (No responsive frame

7100 Total capacity error 7101 Capacity code error 7102 Connecting unit number error 7105 Address set error 7109 Incorrect connection 7130 Incorrect setup

Inverter cooling plate temperature sensor error (THHS)

error)

(Communication trouble with transmission processor)

error)

ENGLISH

b. Constand capacity unit

Check code Abnormality Check code Abnormality

1102 Discharge temperature abnormality 1112 Low pressure saturated temperature abnormality

(Detected by liquid level detecting temperature sensor)

1113 Low pressure saturated temperature abnormality

(Detected by liquid level detecting temperature sensor) 1302 High pressure abnormality 1500 Excessive refrigerant replenishment 1505 Low pressure abnormality 1559 Faulty oil balance circuit 4103 Reverse phase error 4106 Power failure error 4108 Overload protection (Comp overcurrent) 4115 Power supply simultaneous signal abnormality 5101 Discharge temperature sensor error (TH1) 5103 Liquid surface detecting temperature sensor error (TH3) 5104 Liquid surface detecting temperature sensor error (TH4) 5105 Piping temperature sensor error (TH5)

5106 Outdoor temperature sensor error (TH6) 5107 Subcool coil liquid outlet temperature sensor error (TH7) 5108 Subcool coil bypass outlet temperature sensor error

(TH8) 5109 Sub cool coil bypass inlet temperature sensor error (TH9) 5112 Gas pipe sensor error (TH10a) 5113 Gas pipe sensor error (TH10b) 6600 Duplicated unit address setting 6602 Transmission error (Transmission processor hardware

error) 6603 Transmission error (Transmission route BUSY) 6606 Transmission and reception error

(Communication trouble with transmission processor) 6607 Transmission and reception error (No ACK error) 6608 Transmission and reception error (No responsiv e frame

error)

Page 36

3. Remote controller

Check code Abnormality Check code Abnormality

6101 Unreadable response receiving error 6600 Duplicated unit address setting 6602 Transmission error (Transmission processor hardware

error)

6603 Transmission error (Transmission route BUSY)

6606 Transmission and reception error (Communication trou-

ble with transmission processor) 6607 Transmission and reception error (No ACK error) 6608 Transmission and reception error (No responsive fr ame

error)

2 Diagnostic switch (SW1) and the service LED on multi-controller board of the variable capacity unit can be used to judge a malfunction

of outdoor unit.

Self-diagnosing

item

Relay output display 1 (Lighting)

Check display 1

(Blinking)

Relay output display 2

ENGLISH

Check indoor unit

SW1 setting

A B

1234567 8910

A B

1234567 8910

A B

1234567 8910

A B

1234567 8910

A B

1234567 8910

A B

1234567 8910

A B

1234567 8910

Display at LED lighting (blinking)

Flag 1 Flag 2 Flag 3 Flag 4 Flag 5 Flag 6 Flag 7 Flag 8 During

compres-

sor run

Compres-

operations

sor 1

Compres-

sor 2

operations

21S4

SV1

SV22/32

Always lighting

0000 to 9999 (Alternate display of address and error code)

SV4

No.1

unit

No.9

unit

No.17

unit

No.25

unit

No.1

unit

21S4b

No.2

unit

No.10

unit

No.18

unit

No.26

unit

No.2

unit

SV5b

No.3

unit

No.11

unit

No.19

unit

No.27

unit

No.3

unit

SV6

No.4

unit

No.12

unit

No.20

unit

No.28

unit

No.4

unit

CH2, 3

No.5

unit

No.13

unit

No.21

unit

No.29

unit

No.5

unit

52F

No.6

unit

No.14

unit

No.22

unit

No.30

unit

No.6

unit

No.7

unit

No.15

unit

No.23

unit

No.31

unit

No.7

unit

No.8

unit

No.16

unit

No.24

unit

No.32

unit

No.8

unit

Remarks

Flag 8 always lights at microcomputer power ON

21S4b and SV5b are closed with flag 1

Lights at emergency stop in IC Turns off by resetting

A B

Indoor unit

mode

1234567 8910

A B

1234567 8910

A B

1234567 8910

A B

1234567 8910

A B

Indoor unit thermostat

1234567 8910

A B

1234567 8910

A B

1234567 8910

Indoor unit address

a Outdoor unit b Indoor unit A ON B OFF C At factory shipment

A B

1234567 8910

No.9

unit

No.17

unit

No.25

unit

No.1

unit

No.9

unit

No.17

unit

No.25

unit

Displays in order the addresses (1 through 50) of all indoor units connected to the outdoor unit.

No.10

unit

No.18

unit

No.26

unit

No.2

unit

No.10

unit

No.18

unit

No.26

unit

No.11

unit

No.12

unit

No.13

unit

No.14

unit

No.15

unit

No.16

unit

Lights at cooling Blinks at heating

No.19

unit

No.27

unit

No.3

unit

No.11

unit

No.20

unit

No.28

unit

No.4

unit

No.12

unit

No.21

unit

No.29

unit

No.5

unit

No.13

unit

No.22

unit

No.30

unit

No.6

unit

No.14

unit

No.23

unit

No.31

unit

No.7

unit

No.15

unit

No.24

No.32

No.16

Turns off at stop/fan

unit

No.8

unit

Lights at thermostat on

No.19

unit

No.27

unit

No.20

unit

No.28

unit

* Turn SW4-2 of variable capacity unit off. If SW4-2 is on, constant capacity unit data will be

displayed.

No.21

unit

No.29

unit

No.22

unit

No.30

unit

No.23

unit

No.31

unit

No.24

No.32

Turns off at thermostat off

unit

Page 37

Displaying the service LED

ABCDEFGH

Service LED (LD1)

• Error code display Alternate display of error generating address and error code Example At outdoor unit address 51, abnormal discharge temperature (Code 1102)

• Flag display Example SV1 ON under only compressor 1 operated

12.4. Coping with remote controller abnormality

A Flag 1 E Flag 5 B Flag 2 F Flag 6 C Flag 3 G Flag 7 D Flag 4 H Flag 8

Phenomenon Unit does not operate and display stays off even after pressing remote controller ON switch.

(Current-carrying indicator does not light up)

“HO” indicator does not disappear. Unit does not operate even if the switch is

pressed.

Display comes on once but

disappears immediately after a press of the switch.

ON OFF

CLOCK

˚C

ERROR CODE OA UNIT ADDRESS NO

TEMP. TIMER SET

1Hr.

NOT AVAILABLE

ON OFFCLOCK

STAND BY DEFROST

REMOTE CONTROLLER PAR-F25MA

CENTRALLY CONTROLLED

CHECK

INDOOR UNIT ADDRESS NO

Cause (1) Outdoor unit power was not turned on. (2) T r ansmission or remote controller cable

was shorted or connection failure. (3) Power cable contact failure. (4) Remote controller was erroneously con-

nected to unit remote controller termi-

nal block. (5) Too many remote controllers or indoor

units were connected. (1) No transmission cable was connected

to transmission cable terminal block on

the indoor unit. (2) Outdoor unit address was erroneously

set. (3) Indoor unit address was erroneously

set. (1) Indoor unit power was not turned on.

–

ON/OFF

˚C

FILTER

CHECK MODE

TEST RUN

FILTER

CHECK

TEST RUN

A Display: Appears when current is carried

How to cope with abnormality

(a) Check voltage between remote controller terminals.

(i) Remote controller fails when voltage is 17 to 30 V. (ii) If there is no voltage

• Check the number of remote controllers and indoor units connected.

• Remove wire from transmission cable terminal block (TB3) on outdoor unit, and check voltage between terminals.

• If voltage is 17 to 30 V, check (2) and (4) at left.

• If there is no voltage, check (1) and (3) at left.

• Check all items at left.

• Check item at left.

ENGLISH

Page 38

12.5. The following phenomena do not represent abnormality (emergency)

Phenomenon Indoor unit does not the perform cooling (heating) operation. The auto vane runs freely.

Fan setting changes during heating.

Fan stops during heating operation. Fan does not stop while operation has been stopped. No setting of fan while start SW has been turned on.

Outdoor unit does not operate by turning switch on.

Indoor unit remote controller shows

ENGLISH

“HO” indicator for about two minutes when turning ON universal power supply. Drain pump does not stop while unit has been stopped. Drain pump continues to operate while unit has been stopped. When the variable capacity unit is running, the fan of the constant capacity unit runs even though the constant capacity unit isn’t running.

Display of remote controller

“Cooling (heating)” flashes

Normal display

Defrost display No lighting

Heat ready

Normal display

“HO” flashes

Light out

Normal display

Cause When another indoor unit is performing the heating (cooling) operation, the cooling (heating) operation is not performed. Because of the control operation of auto vane, it may change over to horizontal blow automatically from the downward blow in cooling in case the downward blow operation has been continued for 1 hour. At defrosting in heating, hot adjusting and thermostat OFF, it automatically changes over to horizontal blow. Ultra-low speed operation is commenced at thermostat OFF. Light air automatically changes over to set value by time or piping temperature at thermostat ON. The fan is to stop during defrosting. Fan is to run for 1 minute after stopping to exhaust residual heat (only in heating). Ultra low-speed operation for 5 minutes after SW ON or until piping temperature becomes 35°C, low speed operation for 2 minutes thereafter, and then set notch is commenced. (Hot adjust control) When the outdoor unit is being cooled and the refrigerant is resting, warming up operation is performed for at least 35 minutes to warm the compressor. During this time, only the fan operates. System is being driven. Operate remote controller again after “HO” disappear.

After a stop of cooling operation, unit continues to operate drain pump for three minutes and then stops it. Unit continues to operate drain pump if drainage is generated, even during a stop. The fan of constant capacity unit is run automatically in order not to accumulate the refrigerant.

Page 39

ENGLISH

Page 40

This product is designed and intended for use in the residential,

commercial and light-industrial environment.

The product at hand is based on the following EU regulations:

• The equipment Safety Law (GSG) accepted by RW-TUV.

• Low Voltage Directive 73/23/EEC

• Electromagnetic Compatibility Directive 89/

336/EEC

• Machinery Directive 89/392/EEC

Please be sure to put the contact address/telephone number on

this manual before handing it to the customer.

WT03027X01

Printed in Japan

Mitsubishi PUHY-YSMF-B Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual