Mitsubishi Electric PUZ-A18NHA Manuale utente

SERVICE MANUAL

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SPLIT-TYPE, AIR CONDITIONERS

CONTENTS

1. TECHNICAL CHANGES·································2

2. REFERENCE MANUAL··································2

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

4. FEATURES ·····················································6

5. SPECIFICATIONS···········································7

6. DATA·······························································9

7. OUTLINES AND DIMENSIONS····················13

8. WIRING DIAGRAM·······································16

9. WIRING SPECIFICATIONS··························20

10.

REFRIGERANT SYSTEM DIAGRAM

··············23

11. TROUBLESHOOTING···································26

12. EASY MAINTENANCE FUNCTION··············81

13. FUNCTION SETTING····································84

14.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

············92

15. DISASSEMBLY PROCEDURE ···················102

16. PARTS LIST ················································117

17. RoHS PARTS LIST ·····································126

No.OC367

REVISED EDITION-C

R410A

June 2007

[model names]

PUZ-A18NHA

PUZ-A24NHA

PUZ-A30NHA

PUZ-A36NHA

PUZ-A42NHA

PUZ-A18NHA-BS

PUZ-A24NHA-BS

PUZ-A30NHA-BS

PUZ-A36NHA-BS

PUZ-A42NHA-BS

PUY-A12NHA

PUY-A18NHA

PUY-A24NHA

PUY-A30NHA

PUY-A36NHA

PUY-A42NHA

PUY-A12NHA-BS

PUY-A18NHA-BS

PUY-A24NHA-BS

PUY-A30NHA-BS

PUY-A36NHA-BS

PUY-A42NHA-BS

[Service Ref.]

PUZ-A18NHA

PUZ-A24NHA

PUZ-A30NHA

PUZ-A36NHA

PUZ-A42NHA

PUZ-A18NHA-BS

PUZ-A24NHA-BS

PUZ-A30NHA-BS

PUZ-A36NHA-BS

PUZ-A42NHA-BS

PUY-A12NHA PUY-A12NHA1

PUY-A18NHA PUY-A18NHA1

PUY-A24NHA PUY-A24NHA1

PUY-A30NHA PUY-A30NHA1

PUY-A36NHA PUY-A36NHA1

PUY-A42NHA

PUY-A12NHA1-BS

PUY-A18NHA1-BS

PUY-A24NHA1-BS

PUY-A30NHA1-BS

PUY-A36NHA1-BS

PUY-A42NHA-BS

NOTE:

• This manual describes only

service data of the outdoor

units.

• RoHS compliant products

have <G> mark on the spec

name plate.

• For servicing RoHS compliant

products, refer to the RoHS

PARTS LIST.

PUZ-A24/30/36NHA

PUY-A24/30/36NHA

Revision:

• “9-2. SEPARATE INDOOR

UNIT/OUTDOOR UNIT

POWER SUPPLIES” is

deleted in REVISED

EDITION-C.

• Some descriptions have

been modified.

• Please void OC367 REVISED

EDITION-B.

Outdoor unit

OC367C--1.qxp 07.6.20 0:56 PM Page 1

1TECHNICAL CHANGES

2-1. INDOOR UNIT

Model name Service Ref. Service

Manual No.

PLA-A12/18/24/30/36/42AA PLA-A12/18/24/30/36/42AA(1) OC370

PLA-A12/18/24/30/36/42BA PLA-A12/18/24/30/36/42BA OCH420

OCB420

(Issue scheduled in July, 2007)

PCA-A24/30/36/42GA PCA-A24/30/36/42GA(1) OC368

PKA-A12/18GA PKA-A12/18GA(1)

OC369

PKA-A12/18GAL PKA-A12/18GAL(1)

PKA-A24/30/36FA PKA-A24/30/36FA(1)

PKA-A24/30/36FAL PKA-A24/30/36FAL(1)

2-2. TECHNICAL DATA BOOK

Manual No. OCS04

2REFERENCE MANUAL

PUY-A12NHA(-BS) ➔PUY-A12NHA1(-BS)

PUY-A18NHA(-BS) ➔PUY-A18NHA1(-BS)

PUY-A24NHA(-BS) ➔PUY-A24NHA1(-BS)

PUY-A30NHA(-BS) ➔PUY-A30NHA1(-BS)

PUY-A36NHA(-BS) ➔PUY-A36NHA1(-BS)

• Controller circuit board(C.B.) has been changed.

OC367C--1.qxp 07.6.20 0:56 PM Page 2

3SAFETY PRECAUTION

Cautions for units utilizing refrigerant R410A

3-2. CAUTIONS RELATED TO NEW REFRIGERANT

Use new refrigerant pipes.

Make sure that the inside and outside of refrige-

rant piping is clean and it has no contamination

such as sulfur hazardous for use, oxides, dirt,

shaving particles, etc.

In addition, use pipes with specified thickness.

Store the piping to be used during installation

indoors and keep both ends of the piping sealed

until just before brazing. (Leave elbow joints, etc.

in their packaging.)

Use ester oil, ether oil or alkylbenzene oil (small

amount) as the refrigerant oil applied to flares

and flange connections.

In case of using the existing pipes for R22, be careful with

the followings.

· Be sure to clean the pipes and make sure that the insides

of the pipes are clean.

· Change flare nut to the one provided with this product.

Use a newly flared pipe.

· Avoid using thin pipes.

Charge refrigerant from liquid phase of gas

cylinder.

If the refrigerant is charged from gas phase, composition

change may occur in refrigerant and the efficiency will be

lowered.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrige-

rant can cause deterioration of refrigerant oil etc.

Use a vacuum pump with a reverse flow check

valve.

Vacuum pump oil may flow back into refrigerant cycle and

that can cause deterioration of refrigerant oil etc.

Use the following tools specifically designed for

use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Keep the tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that can

cause deterioration of refrigerant oil or malfunction of com-

pressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigera-

nt will change and the efficiency will be lowered.

Flare tool

Electronic refrigerant

charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410A

Contamination inside refrigerant piping can cause deterio-

ration of refrigerant oil etc.

If dirt, dust or moisture enters into refrigerant cycle, that can

cause deterioration of refrigerant oil or malfunction of com-

pressor.

If large amount of mineral oil enters, that can cause deterio-

ration of refrigerant oil etc.

Ventilate the room if refrigerant leaks during

operation. If refrigerant comes into contact with

a flame, poisonous gases will be released.

3-1. ALWAYS OBSERVE FOR SAFETY

Before obtaining access to terminals, all supply

circuits must be disconnected.

OC367C--1.qxp 07.6.20 0:56 PM Page 3

Gravimeter

Unit

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

No. Specifications

1Gauge manifold ·Only for R410A

·Use the existing fitting specifications.

·Use high-tension side pressure of 5.3MPa·G or over.

2Charge hose ·Only for R410A

·Use pressure performance of 5.09MPa·G or over.

3Electronic scale

4Gas leak detector ·Use the detector for R134a, R407C or R410A.

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

6Refrigerant charge base

7Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)

Cylinder with syphon

8Refrigerant recovery equipment

[1] Cautions for service

(1) Perform service after collecting the refrigerant left in unit completely.

(2) Do not release refrigerant in the air.

(3) After completing service, charge the cycle with specified amount of refrigerant.

(4) When performing service, install a filter drier simultaneously.

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

· Check that cylinder for R410A on the market is syphon type.

· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

OC367C--1.qxp 07.6.20 0:56 PM Page 4

3-3. CAUTIONS FOR REFRIGERANT PIPING WORK

New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is

same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the

working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.

1Thickness of pipes

Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness

shown below. (Never use pipes of 0.7mm [7/256 inch] or below.)

2Dimensions of flare cutting and flare nut

The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that,

R410A is a refrigerant, which has higher risk of leakage because of its working pressure is higher than that of other

refrigerants. Therefore, to enhance air tightness and intensity, flare cutting dimension of copper pipe for R410A has

been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for

R410A also has partly been changed to increase intensity as shown below. Set copper pipe correctly referring to cop-

per pipe flaring dimensions for R410A below. For 1/2” and 5/8”, the dimension B changes.

Use torque wrench corresponding to each dimension.

3Tools for R410A (The following table shows whether conventional tools can be used or not.)

1/4”

3/8”

1/2”

5/8”

3/4”

6.35

9.52

12.70

15.88

19.05

0.8 [1/32"]

1.0 [5/128"]

—

0.8 [1/32"]

1.0 [5/128"]

Nominal

dimensions

Diagram below: Piping diameter and thickness

Outside

diameter (mm)

Thickness : mm [inch]

R410A R22

1/4”

3/8”

1/2”

5/8”

3/4”

6.35

9.52

12.70

15.88

19.05

9.1 [11/32-23/64]

13.2 [1/2-33/64]

16.6 [41/64-21/32]

19.7 [49/64-25/32]

—

9.0

13.0

16.2

19.4

23.3

Nominal

dimensions

Flare cutting dimensions

Outside

diameter Dimension A ( )

-0.4

Unit : mm [inch]

R410A R22

1/4”

3/8”

1/2”

5/8”

3/4”

6.35

9.52

12.70

15.88

19.05

17.0 [43/64]

22.0 [7/8]

26.0 [1-3/64]

29.0 [1-9/64]

—

17.0

22.0

24.0

27.0

36.0

Nominal

dimensions

Flare nut dimensions

Outside

diameter Dimension B

Unit : mm [inch]

R410A R22

Gauge manifold

Charge hose

Gas leak detector

Refrigerant recovery equipment

Refrigerant cylinder

Applied oil

Safety charger

Charge valve

Vacuum pump

Flare tool

Bender

Pipe cutter

Welder and nitrogen gas cylinder

Refrigerant charging scale

Vacuum gauge or thermis-

tor vacuum gauge and

vacuum valve

Charging cylinder

Air purge, refrigerant charge

and operation check

Gas leak check

Collection of refrigerant

Refrigerant charge

Apply to flared section

Prevent compressor malfunction

when charging refrigerant by

spraying liquid refrigerant

Prevent gas from blowing out

when detaching charge hose

Vacuum drying and air

purge

Flaring work of piping

Bend the pipes

Cut the pipes

Weld the pipes

Charge refrigerant

Check the degree of vacuum. (Vacuum

valve prevents back flow of oil and refri-

gerant to thermistor vacuum gauge)

Charge refrigerant

Tool exclusive for R410A

Tool for HFC refrigerant

Tool exclusive for R410A

Ester oil and alkylbenzene

oil (minimum amount)

Tool exclusive for R410A

Tools for other refrigerants can

be used if equipped with adop-

ter for reverse flow check

Tools for other refrigerants

can be used by adjusting

flaring dimension

Tools can be used for other refrigerants

Tools can be used for other

refrigerants

Tool exclusive for R410A

Tools and materials Use R410A tools Can R22 tools be used?

(Usable if equipped

with adopter for rever-

se flow)

(Usable by adjusting

flaring dimension)

: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)

: Tools for other refrigerants can be used under certain conditions.

: Tools for other refrigerants can be used.

Dimension A

Dimension B

OC367C--1.qxp 07.6.20 0:56 PM Page 5

4 FEATURES

CHARGELESS SYSTEM

PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.

(Max. 100ft, 30m (A42) / Max. 70ft, 20m (A12-36))

The refrigerant circuit with LEV(Linear Expansion Valve) and accumulator always control the optimal refrigerant level

regardless of the length (A42: 100ft, 30m max. / A12-36: 70ft, 20m max. and 16ft, 5m min.) of piping. The additional

refrigerant charging work during installation often causes problems.

It is completely eliminated by chargeless system. This unique system improves the quality and reliability of the work

done. It also helps to speed up the installation time.

PUZ-A24/30/36NHA

PUZ-A24/30/36NHA-BS

PUY-A24/30/36NHA

PUY-A24/30/36NHA1

PUY-A24/30/36NHA1-BS

PUZ-A42NHA

PUZ-A42NHA-BS

PUY-A42NHA

PUY-A42NHA-BS

PUZ-A18NHA

PUZ-A18NHA-BS

PUY-A12/18NHA

PUY-A12/18NHA1

PUY-A12/18NHA1-BS

OC367C--1.qxp 07.6.20 0:56 PM Page 6

5SPECIFICATIONS

Service Ref. PUZ-A18NHA PUZ-A24NHA PUZ-A30NHA PUZ-A36NHA PUZ-A42NHA

PUZ-A18NHA-BS PUZ-A24NHA-BS PUZ-A30NHA-BS PUZ-A36NHA-BS PUZ-A42NHA-BS

Power supply Phase Single

Cycle 60Hz

Voltage 208/230V

MCA A1318252526

MOCP A 20 30 40 40 40

Breaker size A 15 25 30 30 30

External finish Munsell 3Y 7.8/1.1

Heat exchanger Plate fin coil

Defrost method Reverse cycle

Crankcase heater kW -

Compressor Hermetic

Model SNB130FPBM1 TNB220FLDM TNB220FLDM TNB220FLDM ANV33FDDMT

Motor output kW 0.85 1.3 1.3 1.3 2.5

R.L.A. 12 12 12 12 20

L.R.A. 14 14 17.5 17.5 27.5

Starter type Line start

Fan Fan(drive) oNo. Propeller fan o1 Propeller fan o1 Propeller fan o1 Propeller fan o1 Propeller fan o2

Fan motor output kW 0.040 0.075 0.075 0.075 0.086 + 0.086

Fan motor F.L.A. 0.35 0.75 0.75 0.75 0.40 + 0.40

Airflow m3/min 34 55 55 55 100

CFM 1200 1940 1940 1940 3530

Sound level Cooling dB 46 48 48 48 51

Heating dB 47 50 50 50 55

Protection devices HP switch HP switch HP switch HP switch HP switch

LP switch

Discharge thermo Discharge thermo Discharge thermo Discharge thermo Discharge thermo

Dimension W mm 800 950 950 950 950

D mm 300+23 330+30 330+30 330+30 330+30

H mm 600 943 943 943 1350

W in. 31-1/2 37-12/32 37-12/32 37-12/32 37-12/32

D in. 11-13/16 + 7/8 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16

H in. 23-5/8 37-1/8 37-1/8 37-1/8 53-5/32

Weight kg 45 75 75 75 121

lbs 99 165 165 165 267

Refrigerant R410A

Charged kg 1.7 2.7 2.7 2.7 4.5

lbs 3 + 12/16 6 6 6 10

Control Linear expansion valve

Oil Model Ester (MEL56)

Charged L 0.65 0.87 0.87 0.87 1.4

oz 20 28 28 28 45

Refrigerant Pipe size OD mm 6.35 9.52 9.52 9.52 9.52

piping Liquid in. 1/4 3/8 3/8 3/8 3/8

Pipe size OD mm 12.7 15.88 15.88 15.88 15.88

Gas in. 1/2 5/8 5/8 5/8 5/8

Connection method Indoor Flared

Connection method Outdoor Flared

Height difference m Max. 30

IU - OU ft Max. 100

Piping length m Max. 30 Max. 50 Max. 50 Max. 50 Max. 50

ft Max. 100 Max. 165 Max. 165 Max. 165 Max. 165

OC367C--1.qxp 07.6.20 0:56 PM Page 7

Service Ref. PUY-A12NHA PUY-A18NHA PUY-A24NHA PUY-A30NHA PUY-A36NHA PUY-A42NHA

PUY-A12NHA1PUY-A18NHA1PUY-A24NHA1PUY-A30NHA1PUY-A36NHA1

PUY-A12NHA1-BS PUY-A18NHA1-BS PUY-A24NHA1-BS PUY-A30NHA1-BS PUY-A36NHA1-BS PUY-A42NHA-BS

Power supply

Phase Single

Cycle 60Hz

Voltage 208/230V

MCA A131318252526

MOCP A 15 20 30 40 40 40

Breaker size A 15 15 25 30 30 30

External finish Munsell 3Y 7.8/1.1

Heat exchanger Plate fin coil

Defrost method -

Crankcase heater kW -

Compressor Hermetic

Model SNB130FPBM1 SNB130FPBM1 TNB220FLDM TNB220FLDM TNB220FLDM ANV33FDDMT

Motor output kW 0.85 0.85 1.3 1.3 1.3 2.5

R.L.A. 12 12 12 12 12 20

L.R.A. 14 14 14 17.5 17.5 27.5

Starter type Line start

Fan Fan (drive) oNo. Propeller fan o1 Propeller fan o1 Propeller fan o1 Propeller fan o1 Propeller fan o1 Propeller fan o2

Fan motor output kW 0.040 0.040 0.075 0.075 0.075 0.086 + 0.086

Fan motor F.L.A. 0.35 0.35 0.75 0.75 0.75 0.40 + 0.40

Airflow m3/min 34 34 55 55 55 100

CFM 1200 1200 1940 1940 1940 3530

Sound level Cooling dB 46 46 48 48 48 51

Heating dB – – – – – –

Protection devices HP switch HP switch HP switch HP switch HP switch HP switch

LP switch

Discharge thermo Discharge thermo Discharge thermo Discharge thermo Discharge thermo Discharge thermo

Dimension W mm 800 800 950 950 950 950

D mm 300+23 300+23 330+30 330+30 330+30 330+30

H mm 600 600 943 943 943 1350

W in. 31-1/2 31-1/2 37-12/32 37-12/32 37-12/32 37-12/32

D in. 11-13/16 + 7/8 11-13/16 + 7/8 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16

H in. 23-5/8 23-5/8 37-1/8 37-1/8 37-1/8 53-5/32

Weight kg 41 44 74 74 74 120

lbs 90 97 163 163 163 265

Refrigerant R410A

Charged kg 1.3 1.7 2.7 2.7 2.7 4.5

lbs 2 +14/16 3 + 12/16 6 6 6 10

Control Linear expansion valve

Oil Model Ester (MEL56)

Charged L 0.65 0.65 0.87 0.87 0.87 1.4

oz 20 20 28 28 28 45

Refrigerant Pipe size OD mm 6.35 6.35 9.52 9.52 9.52 9.52

piping Liquid in. 1/4 1/4 3/8 3/8 3/8 3/8

Pipe size OD mm 12.7 12.7 15.88 15.88 15.88 15.88

Gas in. 1/2 1/2 5/8 5/8 5/8 5/8

Connection method Indoor Flared

Connection method Outdoor

Flared

Height difference m Max. 30 Max. 30 Max. 30 Max. 30 Max. 30 Max. 30

IU - OU ft Max. 100 Max. 100 Max. 100 Max. 100 Max. 100 Max. 100

Piping length m Max. 30 Max. 30 Max. 50 Max. 50 Max. 50 Max. 50

ft Max. 100 Max. 100 Max. 165 Max. 165 Max. 165 Max. 165

OC367C--1.qxp 07.6.20 0:56 PM Page 8

Piping Length (one way)

Charged

Factory

Service Ref. 50ft 60ft 70ft 80ft 90ft 100ft 110ft 120ft 130ft 140ft 150ft 160ft 165ft

15m 18m 21m 24m 27m 30m 33m 37m 40m 43m 46m 49m 50m

PUY-A12NHA1-BS

PUY-A12NHA

PUY-A12NHA1

42 oz 44 oz 46 oz 48 oz 50 oz 52 oz - - - - - - - 46 oz

1.2 kg 1.2 kg 1.3 kg 1.4 kg 1.4 kg 1.5 kg - - - - - - - 1.3 kg

PUY-A18NHA1-BS

PUY-A18NHA

PUY-A18NHA1

PUZ-A18NHA-BS

PUZ-A18NHA 56 oz 58 oz 60 oz 62 oz 64 oz 66 oz - - - - - - - 60 oz

1.6 kg 1.6 kg 1.7 kg 1.8 kg 1.8 kg 1.9 kg - - - - - - - 1.7 kg

PUY-A24NHA1-BS

PUY-A24NHA

PUY-A24NHA1

PUZ-A24NHA-BS

PUZ-A24NHA 84 oz 90 oz 96 oz 102 oz 108 oz 114 oz 120 oz 126 oz 132 oz 138 oz 144 oz 150 oz 156 oz 96 oz

2.4 kg 2.6 kg 2.7kg 2.9 kg 3.1 kg 3.2 kg 3.4 kg 3.6 kg 3.7 kg 3.9 kg 4.1 kg 4.3 kg 4.4 kg 2.7 kg

PUY-A30NHA1-BS

PUY-A30NHA

PUY-A30NHA1

PUZ-A30NHA-BS

PUZ-A30NHA 84 oz 90 oz 96 oz 102 oz 108 oz 114 oz 120 oz 126 oz 132 oz 138 oz 144 oz 150 oz 156 oz 96 oz

2.4 kg 2.6 kg 2.7kg 2.9 kg 3.1 kg 3.2 kg 3.4 kg 3.6 kg 3.7 kg 3.9 kg 4.1 kg 4.3 kg 4.4 kg 2.7 kg

PUY-A36NHA1-BS

PUY-A36NHA

PUY-A36NHA1

PUZ-A36NHA-BS

PUZ-A36NHA 84 oz 90 oz 96 oz 102 oz 108 oz 114 oz 120 oz 126 oz 132 oz 138 oz 144 oz 150 oz 156 oz 96 oz

2.4 kg 2.6 kg 2.7kg 2.9 kg 3.1 kg 3.2 kg 3.4 kg 3.6 kg 3.7 kg 3.9 kg 4.1 kg 4.3 kg 4.4 kg 2.7 kg

PUY-A42NHA-BS

PUY-A42NHA

PUZ-A42NHA-BS

PUZ-A42NHA 132 oz 136 oz 142 oz 148 oz 154 oz 160 oz 166 oz 172 oz 178 oz 184 oz 190 oz 196 oz 202 oz 160 oz

3.7 kg 3.9 kg 4.0 kg 4.2 kg 4.4 kg 4.5 kg 4.7 kg 4.9 kg 5.0 kg 5.2 kg 5.4 kg 5.6 kg 5.7 kg 4.5 kg

Longer pipe than 70 or 100 ft, additional charge is required.

PUZ-A42NHA

Service Ref. PUZ-A42NHA-BS

PUY-A42NHA

PUY-A42NHA-BS

Compressor model SNB130FPBM1 TNB220FLDM ANV33FDDMT

(')

Winding Registance

U-V 0.320 0.880 0.266

U-W 0.320 0.880 0.266

W-V 0.320 0.880 0.266

(at 20;, 68˚F )

PUY-A12,18NHA1-BS

PUY-A12,18NHA

PUY-A12,18NHA1

PUZ-A18NHA-BS

PUZ-A18NHA

PUY-A24,30,36NHA1-BS

PUY-A24,30,36NHA

PUY-A24,30,36NHA1

PUZ-A24,30,36NHA-BS

PUZ-A24,30,36NHA

6-1. REFILLING REFRIGERANT CHARGE (R410A : oz, kg)

6-2. COMPRESSOR TECHNICAL DATA

6DATA

OC367C--1.qxp 07.6.20 0:56 PM Page 9

6-3. NOISE CRITERION CURVES

5ft

3.3ft

MICROPHONE

UNIT

GROUND

10 63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PUY-A12/18NHA

PUY-A12/18NHA1

PUY-A12/18NHA1-BS

PUZ-A18NHA

PUZ-A18NHA-BS

COOLING

MODE

HEATING

SPL(dB)

LINE

10 63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PUY-A24/30/36NHA

PUY-A24/30/36NHA1

PUY-A24/30/36NHA1-BS

PUZ-A24/30/36NHA

PUZ-A24/30/36NHA-BS

COOLING

MODE

HEATING

SPL(dB)

LINE

10 63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

PUY-A42NHA

PUY-A42NHA-BS

PUZ-A42NHA

PUZ-A42NHA-BS

COOLING

MODE

HEATING

SPL(dB)

LINE

OC367C--1.qxp 07.6.20 0:56 PM Page 10

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