Mitsubishi Electric PUMY-P125VMA Manual de funcionamiento

TECHNICAL & SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGE ·····································2

2. SAFETY PRECAUTION····································3

3. OVERVIEW OF UNITS······································5

4. SPECIFICATIONS·············································8

5. DATA ·······························································10

6. OUTLINES AND DIMENSIONS······················18

7. WIRING DIAGRAM·········································19

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

···22

9. TROUBLESHOOTING ····································34

10. ELECTRICAL WIRING····································72

11. REFRIGERANT PIPING TASKS·····················75

12. DISASSEMBLY ···············································80

13. PARTS LIST ····················································86

Outdoor unit

[Model name] [Service Ref.]

PUMY-P125VMA PUMY-P125VMA

PUMY-P125YMA PUMY-P125YMA

PUMY-P125YMA1

No.OC272

REVISED EDITION-A

2003

SPLIT-TYPE, HEAT PMUP AIR CONDITIONERS

R407C

Revision :

•PUMY-P125VMA and

PUMY-P125YMA1are

added in REVISED

EDITION-A.

•Please void OC272.

OUTDOOR UNIT

OC272A--1.qxp 03.9.4 11:06 AM Page 1

1 TECHNICAL CHANGE

PUMY-P125YMA ➔PUMY-P125YMA1

1. Addition of new function (Auto Change Over)

PUMY-P125YMA : Not equipped

PUMY-P125YMA1: Equipped

2. Difference of operation switching logic for the outdoor output connector (CN3D)

PUMY-P125YMA : CN3D 1-2 ······ OPEN : Heating CLOSE : Cooling

PUMY-P125YMA1: CN3D 1-2 ······ OPEN : Cooling CLOSE : Heating

3. Difference of the role of SW5-1 (function selection switch)

PUMY-P125YMA : Fix the operation frequency ······························ ON : Fix OFF : Normal

PUMY-P125YMA1: Auto Change Over from Remote Controller ······ ON : Enable OFF : Disable

OC272A--1.qxp 03.9.4 11:06 AM Page 2

2 SAFETY PRECAUTION

Cautions for using with the outdoor unit which adopts R407C refrigerant.

· Do not use the existing refrigerant piping.

-The old refrigerant and refrigerant oil in the existing piping contains a large amount of chlorine which may cause the refriger-

ant oil of the new unit to deteriorate.

· Do not use copper pipes which are broken, deformed or discolour .

In addition, be sure that the inner surfaces of the pipes are clean, free of hazardous sulphur and oxides, or have no dust /

dirt, shaving particles, oils, moisture or any other contamination.

-If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the refrigerant oil will

result.

· Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before

brazing. (Store elbows and other joints in a plastic bag.)

-If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result.

· Use ester oil, ether oil or alkyl benzene (small amount) as the refrigerant oil to coat flares and flange connections.

-The refrigerant oil will degrade if it is mixed with a large amount of mineral oil.

Use liquid refrigerant to fill the system.

-If gas refrigerant is used to fill the system, the composition of the refrigerant in the cylinder will change and performance

may drop.

· Do not use a refrigerant other than R407C.

-If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the refrigerant oil to deteriorate.

· Use a vacuum pump with a service port.

-The vacuum pump oil may flow back into the refrigerant cycle and cause the refrigerant oil to deteriorate.

· Do not use the following tools that are used with conventional refrigerant.

(Gauge manifold , charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, vacuum gauge,

refrigerant recovery equipment)

-If the conventional refrigerant and refrigerant oil are mixed in the R407C, the refrigerant may deteriorated.

-If water is mixed in the R407C, the refrigerant oil may deteriorate.

-Since R407C does not contain any chlorine, gas leak detectors for conventional refrigerant will not react to it.

· Do not use a charging cylinder.

-Using a charging cylinder may cause the refrigerant to deteriorate.

· Be especially careful when managing the tools.

-if dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deteriorate.

· Do not use the drier which is sold in the field.

-The drier for R407C refrigerant is pre-attached to outdoor unit refrigerant circuit.

-Some drier in the field are not in conformity with R407C refrigerant.

OC272A--1.qxp 03.9.4 11:06 AM Page 3

[3] Refrigerant recharging

(1) Refrigerant recharging process

1Direct charging from the cylinder.

·R407C cylinder are available on the market has a syphon pipe.

·Leave the syphon pipe cylinder standing and recharge it.

(By liquid refrigerant)

(2) Recharge in refrigerant leakage case

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release the refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of

liquid refrigerant.

Gravimeter

Unit

[1] Service tools

Use the below service tools as exclusive tools for R407C refrigerant.

No. Tool name Specifications

1Gauge manifold ·Only for R407C.

·Use the existing fitting SPECIFICATIONS. (UNF 7/16)

·Use high-tension side pressure of 3.43MPa·G or over.

2Charge hose ·Only for R407C.

·Use pressure performance of 5.10MPa·G or over.

3Electronic scale

4Gas leak detector ·Use the detector for R407C.

5Adapter for reverse flow check. ·Attach on vacuum pump.

6Refrigerant charge base.

7Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)

·Cylinder with syphon

8Refrigerant recovery equipment.

[2] Notice on repair service

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of

liquid refrigerant.

OC272A--1.qxp 03.9.4 11:06 AM Page 4

3OVERVIEW OF UNITS

3-1. UNIT CONSTRUCTION

5HP

Outdoor unit

PUMY-P125VMA

PUMY-P125YMA

PUMY-P125YMA1

Indoor unit

that can be

connected

Capacity

Number of units

Total system wide capacity

Type 20~Type 125

1~8 units

50~130% of outdoor unit capacity

CMY-Y62-C-E CMY-Y64-C CMY-Y68

Branch header

(2 branches) Branch header

(4 branches) Branch header

(8 branches)

CMY-S65

Multi distribution

Piping on outdoor

unit

(5 branches)

Branching pipe

components

Decorative panel

100

125

–

32VKM-A

40VKM-A

50VKM-A

63VKM-A

–

80VAM-A

100VAM-A

125VAM-A

20VLMD-A

25VLMD-A

32VLMD-A

40VLMD-A

50VLMD-A

63VLMD-A

–

80VLMD-A

100VLMD-A

125VLMD-A

20VML-A / VMM-A

25VML-A / VMM-A

32VML-A / VMM-A

40VMH-A / VMM-A

50VMH-A / VMM-A

63VMH-A / VMM-A

71VMH-A / VMM-A

80VMH-A / VMM-A

100VMH-A / VMM-A

125VMH-A / VMM-A

20VM-A

25VM-A

32VM-A

40VM-A

50VM-A

63VM-A

71VM-A

80VM-A

100VM-A

125VM-A

20VAM-A

25VAM-A

32VGM-A

40VGM-A

50VGM-A

63VFM-A

–

100VFM-A

–

20VLEM-A

25VLEM-A

32VLEM-A

40VLEM-A

50VLEM-A

63VLEM-A

–

20VLRM-A

25VLRM-A

32VLRM-A

40VLRM-A

50VLRM-A

63VLRM-A

–

40VGM-A

–

63VGM-A

–

100VGM-A

125VGM-A

PLFY-P PLFY-P PEFY-P PDFY-P PKFY-P PCFY-P PFFY-P PFFY-P

Capacity

Model Cassette Ceiling

4-way flow 2-way flow

20VBM-A

25VBM-A

32VBM-A

40VBM-A

–

PMFY-P

1-way flow Ceiling

Concealed Ceiling mounted

built-in Ceiling

Suspended

Wall Mounted Floor standing

Exposed Concealed

Remote

controller

Name

Model number

Functions

M-NET remote controller

PAR-F27MEA-E

• A handy remote controller for use in conjunction

with the Melans centralized management system.

• Addresses must be set.

• Addresses setting is not necessary.

•

Only the indoor unit for MA remote controller

(the end of model name is -A) can be used.

MA remote controller

PAR-20MAA-E

OC272A--1.qxp 03.9.4 11:06 AM Page 5

3-2. UNIT SPECIFICATIONS

(2) Method for identifying MULTI-S model

(1) Outdoor Unit

■ Indoor unit < When using Model 80 > ■ Outdoor unit <When using model 125 >

(3) Operating temperature range

Notes D.B. : Dry Bulb Temperature

W.B. : Wet Bulb Temperature

P L F Y - P 80 V AM - A PU M Y - P 125 V M A

PAC type

LMD

Frequency

conversion

controller

Refrigerant

R407C/R22

commonness

Refrigerant

R407C

NEW frequency converter

one-to-many air conditioners

(flexible design type)

Indicates equivalent

to Cooling capacity

Indicates equivalent

to Cooling capacity

Power supply

V: Single phase

220-230-240V 50Hz

220V 60Hz

Power supply

V: Single phase

220-230-240V 50Hz

Y: 3-phase

380-400-415V 50Hz

380V 60Hz

L : Ceiling cassette

K : Wall-mounted type

E : Hidden skylight type

C: Ceiling suspended type

M: Ceiling cassette type

F : Floor standing type

}

M-NET

control

M-NET control

MA control Sub-number

Frequency

conversion

controller

Outdoor unit

MULTI-S

Service Ref.

PUMY-P125VMA

PUMY-P125YMA

PUMY-P125YMA1

Capacity Cooling (kW)

Heating (kW)

14.0

16.0

3.5Motor for compressor (kW)

Cooling

W.B. 15~24°C

D.B. -5~46°C

Heating

D.B. 15~27°C

W.B. -15~15.5°C

Indoor-side intake air temperature

Outdoor-side intake air temperature

Cooling / Heating capacity indicates the maximum value at operation under the following condition.

w. Cooling Indoor : D.B. 27°C / W.B. 19.0°C

Outdoor : D.B. 35°C

Heating Indoor : D.B. 20°C

Outdoor : D.B. 7°C / W.B. 6°C

OC272A--1.qxp 03.9.4 11:06 AM Page 6

3-3. SYSTEM LAYOUT

3-3-1. System layout

One outdoor unit using branching connectors can be connected to a maximum of eight indoor units.

■Examples of a branching method

indoor

First branch

(branching connector)

Outdoor unit

3-3-2. Notes on the connection of indoor and outdoor units

3-3-3. Capacity for outdoor unit

Note: When the total capacity of indoor units exceeds the capacity of the outdoor unit (more than 100%), the rated power of

each indoor unit will be less when they are running simultaneously.

(1) Branching pipe

Model

Branching connector

CMY-Y62C-E

CMY-Y64-C

CMY-Y68

CMY-S65

NUMBER OF BRANCHING POINTS

(2) Examples of System Construction (All models)

125

80 40 40

PIping method Total capacity of

indoor units.

160

Outdoor unit

Indoor units

Outdoor unit

Indoor unit

Type 20 ~ Type 125

PUMY-P125VMA

PUMY-P125YMA

PUMY-P125YMA1

1~8 units

63~163

Indoor unit that can connected

Available capacity of indoor unit

Total capacity of units that can be included system

(50-130% of outdoor unit capacity)

OC272A--1.qxp 03.9.4 11:06 AM Page 7

4 SPECIFICATIONS

PUMY-P125VMA

14.0

6.10

28.3-27.1-26.0

16.0

6.03

28.0-26.7-25.7

Single phase 220-230-240V 50Hz

Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/1>

1280 o1020 o350 (+30)

Crossover fin

EEV48FAM

Fully enclosed type o1

Frequency converter start

3.5

Cooling 27-100% Heating 25-100%

1.9 (104Hz)

—

1.4 (MEL32)

Propeller (direct) o2

90(3,177)

60 o2

Reverse cycle

—

High pressure pressure sensor (3.0MPa)

Thermal switch

Overheating, excessive current protection

127(280)

19.05

9.52

R407C o8.5

Expansion valve

Item Service Ref. Unit

Standard performance

Heating Cooling

Rated Cooling capacity

Rated power consumption

Operating current

Operating power factor

Starting current

Rated Heating capacity

Rated power consumption

Operating current

Operating power factor

Starting current

Rated power supply

Type ocharge amount

Control method

External finish (Munsell colour-coded markings)

Dimensions H oW oD (Note 1)

Heat exchanger type

Defrost method

Pressure gauge

Noise level

Weight

Refrigerant pipe size

Refrigerant

Model

Type oquantity

Starting method

Motor output

Capacity control

Daily cooling capacity

Heater <crankcase>

Refrigerating oil (Model)

Type oquantity

Airflow

Motor output

High pressure protection

Compressor protection

Blower protection

Frequency converter circuit

Compressor

Protection

devices

Gas

Liquid

Fan

Legal tons

k/min(CFM)

kg(lbs)

[mm

Note 1: External dimensions in parentheses indicate the dimensions of protruding parts.

Note 2: Rating conditions (JIS B 8616)

Cooling : Indoor : D.B. 27:W.B. 19:

: Outdoor : D.B. 35:W.B. 24:

Heating : Indoor : D.B. 20:

: Outdoor : D.B. 7:W.B. 6:

OC272A--1.qxp 03.9.4 11:06 AM Page 8

PUMY-P125YMA

PUMY-P125YMA1

14.0

5.95

9.6-9.1-8.8

8.0

16.0

5.58

9.2-8.8-8.5

8.0

3 phase 380-400-415V 50Hz

Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/1>

1280 o1020 o350 (+30)

Crossover fin

EEV48FAK

Fully enclosed type o1

Frequency converter start

3.5

Cooling 27-100% Heating 25-100%

1.9 (104Hz)

—

1.4 (MEL32)

Propeller (direct) o2

90(3,177)

60 o2

Reverse cycle

—

High pressure pressure sensor (3.0MPa)

Thermal switch

Overheating, excessive current protection

127(280)

19.05

9.52

R407C o8.5

Expansion valve

Item Service Ref. Unit

Standard performance

Heating Cooling

Rated Cooling capacity

Rated power consumption

Operating current

Operating power factor

Starting current

Rated Heating capacity

Rated power consumption

Operating current

Operating power factor

Starting current

Rated power supply

Type ocharge amount

Control method

External finish (Munsell colour-coded markings)

Dimensions H oW oD (Note 1)

Heat exchanger type

Defrost method

Pressure gauge

Noise level

Weight

Refrigerant pipe size

Refrigerant

Model

Type oquantity

Starting method

Motor output

Capacity control

Daily cooling capacity

Heater <crankcase>

Refrigerating oil (Model)

Type oquantity

Airflow

Motor output

High pressure protection

Compressor protection

Blower protection

Frequency converter circuit

Compressor

Protection

devices

Gas

Liquid

Fan

Legal tons

k/min(CFM)

kg(lbs)

[mm

Note 1: External dimensions in parentheses indicate the dimensions of protruding parts.

Note 2: Rating conditions (JIS B 8616)

Cooling : Indoor : D.B. 27:W.B. 19:

: Outdoor : D.B. 35:W.B. 24:

Heating : Indoor : D.B. 20:

: Outdoor : D.B. 7:W.B. 6:

OC272A--1.qxp 03.9.4 11:06 AM Page 9

5DATA

5-1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS

5-1-1. Method for obtaining system cooling and heating capacity:

To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit, first add up the ratings

of all the indoor units connected to the outdoor unit (see table below), and then use this total to find the standard capacity with

the help of the tables on page 11 to 14.

(1) Capacity of indoor unit

Cooling

14.60 Heating

7.8

Cooling

8.9

Heating

5.14

Cooling

6.04

Heating

16.33

Capacity (kW)

Outdoor unit power consumption (kW)

Outdoor unit current (A)

5-1-2. Method for obtaining the heating and cooling capacity of an indoor unit:

(1) The capacity of each indoor unit (kW) = the capacity A(or B) o

(2) Sample calculation (using the system described above in 4-1-1. (2) ):

model capacity

total model capacity of all indoor units

During cooling: During heating:

• The total model capacity of the indoor unit is:

2.8 o2 + 5.6 o2=16.8kW

Therefore, the capacity of PKFY-P25VAM-A and

PLFY-P50VLMD-A will be calculated as follows by

using the formula in 4-1-2. (1):

Model 25=14.6 o= 2.43kW

Model 50=14.6 o= 4.87kW

• The total model capacity of indoor unit is:

3.2 o2 + 6.3 o2=19.0

Therefore, the capacity of PKFY-P25VAM-A and PLFY-

P50VLMD-A will be calculated as follows by using the

formula in 4-1-2. (1):

Model 25=16.33 o= 2.75kW

Model 50=16.33 o= 5.41kW

2.8

16.8 3.2

19.0

6.3

19.0

5.6

16.8

(2) Sample calculation

1System assembled from indoor and outdoor unit (in this example the total capacity of the indoor units is greater than

that of the outdoor unit)

• Outdoor unit PUMY-P125YMA

• Indoor unit PKFY-P25VAM-A o2 , PLFY-P50VLMD-A o2

2According to the conditions in 1, the total capacity of the indoor unit will be: 28 o2 +

56 o2 = 168

Model 20

Model Number for indoor unit

Model Capacity kW 22

Model 25

Model 32

Model 40

Model 50

Model 63

Model 71

Model 80

Model 100

112

Model 125

140

OC272A--1.qxp 03.9.4 11:06 AM Page 10

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