Mitsubishi Electronics PUY-A36NHA2, PUY-A42NHA2-BS, PUY-A36NHA2-BS, PUZ-A18NHA2-BS, PUY-A18NHA2 User Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS

Outdoor unit

November 2007

No.OCH429

SERVICE MANUAL R410A

[model names]

PUZ-A18NHA2 PUZ-A24NHA2 PUZ-A30NHA2 PUZ-A36NHA2 PUZ-A42NHA2 PUZ-A18NHA2-BS PUZ-A24NHA2-BS PUZ-A30NHA2-BS PUZ-A36NHA2-BS PUZ-A42NHA2-BS

PUY-A12NHA2 PUY-A18NHA2 PUY-A24NHA2 PUY-A30NHA2 PUY-A36NHA2 PUY-A42NHA2 PUY-A12NHA2-BS PUY-A18NHA2-BS PUY-A24NHA2-BS PUY-A30NHA2-BS PUY-A36NHA2-BS PUY-A42NHA2-BS

[Service Ref.]

PUZ-A18NHA2 PUZ-A24NHA2 PUZ-A30NHA2 PUZ-A36NHA2 PUZ-A42NHA2 PUZ-A18NHA2-BS PUZ-A24NHA2-BS PUZ-A30NHA2-BS PUZ-A36NHA2-BS PUZ-A42NHA2-BS

PUY-A12NHA2 PUY-A18NHA2 PUY-A24NHA2 PUY-A30NHA2 PUY-A36NHA2 PUY-A42NHA2 PUY-A12NHA2-BS PUY-A18NHA2-BS PUY-A24NHA2-BS PUY-A30NHA2-BS PUY-A36NHA2-BS PUY-A42NHA2-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.

CONTENTS

1.REFERENCE MANUAL·············

2.SAFETY PRECAUTION·············

3.FEATURES ··················

4.SPECIFICATIONS···············

5.DATA ·····················

6.OUTLINES AND DIMENSIONS·········

7. WIRING DIAGRAM ···············

8. WIRING SPECIFICATIONS ···········

9.REFRIGERANT SYSTEM DIAGRAM ········

10.TROUBLESHOOTING ·············

11.EASY MAINTENANCE FUNCTION ········

12.FUNCTION SETTING··············

13.MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER·······

14.DISASSEMBLY PROCEDURE ··········

PARTS CATALOG (OCB429)

PUZ-A24/30/36NHA2

PUY-A24/30/36NHA2

1 REFERENCE MANUAL

1-1. INDOOR UNIT

	Model name	Service Ref.	Service
			Manual No.
	PLA-A12/18/24/30/36/42BA	PLA-A12/18/24/30/36/42BA1	OCH420
			OCB420
	PCA-A24/30/36/42GA	PCA-A24/30/36/42GA2	OC368
	PKA-A12/18GA	PKA-A12/18GA2
	PKA-A12/18GAL	PKA-A12/18GAL2	OC369
	PKA-A24/30/36FA	PKA-A24/30/36FA2
	PKA-A24/30/36FAL	PKA-A24/30/36FAL2

1-2. TECHNICAL DATA BOOK

Manual No. OCS13

2

2 SAFETY PRECAUTION

2-1. ALWAYS OBSERVE FOR SAFETY

Before obtaining access to terminals, all supply circuits must be disconnected.

2-2. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Use new refrigerant pipes.

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.

Make sure that the inside and outside of refrigerant 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.

Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.

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.)

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections.

If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.

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 refrigerant 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.

	Tools for R410A
Gauge manifold		Flare tool
Charge hose		Size adjustment gauge
Gas leak detector		Vacuum pump adaptor
Torque wrench		Electronic refrigerant
		charging scale

Keep the tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

3

[1]Cautions for service

(1)Perform service after recovering 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.)

Unit

Gravimeter

[3] Service tools

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

No.	Tool name	Specifications
1	Gauge manifold	·Only for R410A
		·Use the existing fitting specifications.
		·Use high-tension side pressure of 5.3MPa·G or over.
2	Charge hose	·Only for R410A
		·Use pressure performance of 5.09MPa·G or over.

3Electronic scale

4	Gas leak detector	·Use the detector for R134a, R407C or R410A.
5	Adaptor for reverse flow check	·Attach on vacuum pump.

6Refrigerant charge base

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

8Refrigerant recovery equipment

4

2-3. 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.)

Diagram below: Piping diameter and thickness

Nominal	Outside	Thickness : mm [inch]
dimensions[inch]	diameter (mm)	R410A	R22
1/4	6.35	0.8 [1/32]	0.8 [1/32]
3/8	9.52	0.8 [1/32]	0.8 [1/32]
1/2	12.70	0.8 [1/32]	0.8 [1/32]
5/8	15.88	1.0 [5/128]	1.0 [5/128]
3/4	19.05	—	1.0 [5/128]

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

Use torque wrench corresponding to each dimension.

Dimension A
								Dimension B
Flare cutting dimensions			Unit : mm [inch]			Flare nut dimensions				Unit : mm [inch]
Nominal	Outside		Dimension A ( -+00.4 )			Nominal		Outside		Dimension B
dimensions[inch]	diameter		R410A	R22		dimensions[inch]		diameter	R410A		R22
1/4	6.35	9.1	[11/32-23/64]	9.0		1/4		6.35	17.0	[43/64]	17.0
3/8	9.52	13.2	[1/2-33/64]	13.0		3/8		9.52	22.0	[7/8]	22.0
1/2	12.70	16.6	[41/64-21/32]	16.2		1/2		12.70	26.0	[1-3/64]	24.0
5/8	15.88	19.7	[49/64-25/32]	19.4		5/8		15.88	29.0	[1-9/64]	27.0
3/4	19.05		—	23.3		3/4		19.05		—	36.0

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

Tools and materials	Use	R410A tools	Can R22 tools be used?
Gauge manifold	Air purge, refrigerant charge	Tool exclusive for R410A
Charge hose	and operation check	Tool exclusive for R410A
Gas leak detector	Gas leak check	Tool for HFC refrigerant
Refrigerant recovery equipment	Collection of refrigerant	Tool exclusive for R410A
Refrigerant cylinder	Refrigerant charge	Tool exclusive for R410A
Applied oil	Apply to flared section	Ester oil, ether oil and
		alkylbenzene oil(minimum amount)
Safety charger	Prevent compressor malfunction	Tool exclusive for R410A
	when charging refrigerant by
	spraying liquid refrigerant
Charge valve	Prevent gas from blowing out	Tool exclusive for R410A
	when detaching charge hose
Vacuum pump	Vacuum drying and air	Tools for other refrigerants can	(Usable if equipped
	purge	be used if equipped with adop-	with adopter for rever-
		ter for reverse flow check	se flow)
Flare tool	Flaring work of piping	Tools for other refrigerants	(Usable by adjusting
		can be used by adjusting	flaring dimension)
		flaring dimension
Bender	Bend the pipes	Tools can be used for other refrigerants
Pipe cutter	Cut the pipes	Tools can be used for other refrigerants
Welder and nitrogen gas cylinder	Weld the pipes	Tools can be used for other refrigerants
Refrigerant charging scale	Refrigerant charge	Tools can be used for other refrigerants
Vacuum gauge or thermis-	Check the degree of vacuum. (Vacuum	Tools can be used for other
tor vacuum gauge and	valve prevents back flow of oil and refri-	refrigerants
vacuum valve	gerant to thermistor vacuum gauge)
Charging cylinder	Refrigerant charge	Tool exclusive for R410A

: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.

5

3 FEATURES

PUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BS

PUZ-A24/30/36NHA2 PUZ-A24/30/36NHA2-BS PUY-A24/30/36NHA2 PUY-A24/30/36NHA2-BS

PUZ-A42NHA2

PUZ-A42NHA2-BS

PUY-A42NHA2

PUY-A42NHA2-BS

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.

6

4				SPECIFICATIONS
Service Ref.						PUZ-A18NHA2	PUZ-A24NHA2	PUZ-A30NHA2	PUZ-A36NHA2	PUZ-A42NHA2
						PUZ-A18NHA2-BS	PUZ-A24NHA2-BS	PUZ-A30NHA2-BS	PUZ-A36NHA2-BS	PUZ-A42NHA2-BS
Power supply			Phase					Single
				Cycle				60Hz
				Voltage				208/230V
MCA					A	13	18	25	25	26
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	ANV33FDJMT
				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				Inverter
Fan				Fan(drive) o No.		Propeller fan o 1	Propeller fan o 1	Propeller fan o 1	Propeller fan o 1	Propeller fan o 2
				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	118
					lbs	99	165	165	165	260
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)		Ether (FV50S)
				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

7

Service Ref.			PUY-A12NHA2	PUY-A18NHA2	PUY-A24NHA2		PUY-A30NHA2	PUY-A36NHA2	PUY-A42NHA2
			PUY-A12NHA2-BS	PUY-A18NHA2-BS	PUY-A24NHA2-BS		PUY-A30NHA2-BS	PUY-A36NHA2-BS	PUY-A42NHA2-BS
Power supply	Phase				Single
	Cycle				60Hz
	Voltage				208/230V
MCA		A	13	13	18		25	25	26
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	ANV33FDJMT
	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				Inverter
Fan	Fan (drive) o No.		Propeller fan o 1	Propeller fan o 1	Propeller fan o 1		Propeller fan o 1	Propeller fan o 1	Propeller fan o 2
	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	117
		lbs	90	97	163		163	163	258
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)				Ether (FV50S)
	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

8

5

DATA

5-1. REFILLING REFRIGERANT CHARGE (R410A : oz, kg)

Piping Length (one way)

Factory

Service Ref.

50ft

60ft

70ft

80ft

90ft

100ft

110ft

120ft

130ft

140ft

150ft

160ft

165ft

Charged

15m

18m

21m

24m

27m

30m

33m

37m

40m

43m

46m

49m

50m

PUY-A12NHA2

42 oz

44 oz

46 oz

48 oz

50 oz

52 oz

-

-

-

-

-

-

-

46 oz

PUY-A12NHA2-BS

1.2 kg

1.2 kg

1.3 kg

1.4 kg

1.4 kg

1.5 kg

-

-

-

-

-

-

-

1.3 kg

PUZ-A18NHA2

56 oz

58 oz

60 oz

62 oz

64 oz

66 oz

-

-

-

-

-

-

-

60 oz

PUZ-A18NHA2-BS

PUY-A18NHA2

PUY-A18NHA2-BS

1.6 kg

1.6 kg

1.7 kg

1.8 kg

1.8 kg

1.9 kg

-

-

-

-

-

-

-

1.7 kg

PUZ-A24NHA2

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

PUZ-A24NHA2-BS

PUY-A24NHA2

PUY-A24NHA2-BS

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

PUZ-A30NHA2

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

PUZ-A30NHA2-BS

PUY-A30NHA2

PUY-A30NHA2-BS

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

PUZ-A36NHA2

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

PUZ-A36NHA2-BS

PUY-A36NHA2

PUY-A36NHA2-BS

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

PUZ-A42NHA2

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

PUZ-A42NHA2-BS

PUY-A42NHA2

PUY-A42NHA2-BS

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.

5-2. COMPRESSOR TECHNICAL DATA

				(at 20˚C, 68˚F )
		PUZ-A18NHA2	PUZ-A24,30,36NHA2	PUZ-A42NHA2
Service Ref.		PUZ-A18NHA2-BS	PUZ-A24,30,36NHA2-BS	PUZ-A42NHA2-BS
		PUY-A12,18NHA2	PUY-A24,30,36NHA2	PUY-A42NHA2
		PUY-A12,18NHA2-BS	PUY-A24,30,36NHA2-BS	PUY-A42NHA2-BS
Compressor model		SNB130FPBM1	TNB220FLDM	ANV33FDJMT
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

9

5-3. NOISE CRITERION CURVES

PUY-A12/18NHA2
PUY-A12/18NHA2-BS						MODE		SPL(dB)	LINE
PUZ-A18NHA2						COOLING		46
PUZ-A18NHA2-BS						HEATING		47
bar)	90
= 0.0002	80
dB	70								NC-70
dB (0
	60
LEVEL,
									NC-60
PRESSURE	50
									NC-50
	40
									NC-40
SOUND
	30
									NC-30
BAND
	20	APPROXIMATE
OCTAVE		THRESHOLD OF
		HEARING FOR							NC-20
		CONTINUOUS
		NOISE
	10	63	125	250	500	1000	2000	4000	8000

BAND CENTER FREQUENCIES, Hz

PUY-A42NHA2
PUY-A42NHA2-BS						MODE		SPL(dB)	LINE
PUZ-A42NHA2
						COOLING		51
PUZ-A42NHA2-BS						HEATING		55
bar)	90
= 0.0002	80
dB	70								NC-70
dB (0
	60
LEVEL,
									NC-60
PRESSURE	50
									NC-50
	40
									NC-40
SOUND
	30
									NC-30
BAND
	20	APPROXIMATE
OCTAVE		THRESHOLD OF
		HEARING FOR							NC-20
		CONTINUOUS
		NOISE
	10	63	125	250	500	1000	2000	4000	8000

BAND CENTER FREQUENCIES, Hz

PUY-A24/30/36NHA2
PUY-A24/30/36NHA2-BS							MODE		SPL(dB)	LINE
PUZ-A24/30/36NHA2
							COOLING		48
PUZ-A24/30/36NHA2-BS HEATING									50
bar)	90
= 0.0002	80
dB	70									NC-70
dB (0
	60
LEVEL,
										NC-60
PRESSURE	50
										NC-50
	40
										NC-40
SOUND
	30
										NC-30
BAND
	20	APPROXIMATE
OCTAVE		THRESHOLD OF
		HEARING FOR								NC-20
		CONTINUOUS
		NOISE
	10	63	125	250	500	1000		2000	4000	8000

BAND CENTER FREQUENCIES, Hz

MICROPHONE

3.3ft

UNIT

5ft

GROUND

10

5-4. STANDARD OPERATION DATA

5-4-1. Heat pump

	Representative matching			PKA-A18GA		PKA-A24FA		PKA-A30FA		PKA-A36FA		PLA-A42BA
	Mode			COOLING	HEATING	COOLING	HEATING	COOLING	HEATING	COOLING	HEATING	COOLING	HEATING
	Total	Capacity	BTU/h	18,000	19,000	24,000	26,000	30,000	32,000	34,200	37,000	42,000	45,000
		Input	W	2,240	2,130	2,650	2,570	4,400	3,660	5,030	3,610	4,600	4,450
		Indoor unit model		PKA-A18GA		PKA-A24FA		PKA-A30FA		PKA-A36FA		PLA-A42BA
		Phase		Single		Single		Single		Single		Single
	circuit	Cycle		60Hz		60Hz		60Hz		60Hz		60Hz
		Voltage		230V		230V		230V		230V		230V
	Electrical	Current		0.33A		0.43A		0.43A		0.52A		1.00A	0.94A
		Outdoor unit model		PUZ-A18NHA2		PUZ-A24NHA2		PUZ-A30NHA2		PUZ-A36NHA2		PUZ-A42NHA2
		Phase		Single		Single		Single		Single		Single
		Cycle		60Hz		60Hz		60Hz		60Hz		60Hz
		Voltage		230V		230V		230V		230V		230V
		Current		9.71A	9.22A	11.45A	11.09A	19.29A	15.98A	22.03A	15.66A	20.35A	21.48A
		Discharge pressure	MPa	3.14	3.38	2.85	3.03	2.99	3.50	3.22	2.95	2.83	2.93
		Suction pressure	MPa	0.81	0.64	0.86	0.69	0.72	0.65	0.76	0.60	0.82	0.69
		Discharge temperature	:	81.6	89.0	72.6	79.3	83.7	92.4	88.8	83.0	73.4	80.3
	circuit	Condensing temperature	:	52.0	51.6	46.8	49.6	49.1	55.9	51.5	48.0	47.5	47.5
		Suction temperature	:	4.8	-1.2	7.0	-0.3	1.2	-1.6	3.3	-2.0	4.9	0.3
	Refrigerant	Ref. Pipe length	m	7.6	7.6	7.6	7.6	7.6	7.6	7.6	7.6	7.6	7.6
		Discharge pressure	PSIG	455	490	414	440	434	508	467	428	410	425
		Suction pressure	PSIG	118	93	125	99	104	94	110	87	120	100
		Discharge temperature	˚F	179	192	163	175	183	198	192	181	164	177
		Condensing temperature	˚F	126	125	116	121	120	133	125	118	118	118
		Suction temperature	˚F	41	30	45	31	34	29	38	28	40	33
		Ref. Pipe length	ft	25	25	25	25	25	25	25	25	25	25
	Indoor	Intake air temperature DB	:	26.7	21.1	26.7	21.1	26.7	21.1	26.7	21.1	26.7	21.1
		Intake air temperature WB		19.4	15.6	19.4	15.6	19.4	15.6	19.4	15.6	19.4	15.6
	side		:
		Discharge air temperature DB	:	12.2	45.4	13.7	40.5	12.1	45.7	13.7	40.9	12.9	41.9
	Outdoor	Intake air temperature DB	:	35	8.3	35	8.3	35	8.3	35	8.3	35	8.3
	side
		Intake air temperature WB	:	23.9	6.1	23.9	6.1	23.9	6.1	23.9	6.1	23.9	6.1
	Indoor	Intake air temperature DB	˚F	80	70	80	70	80	70	80	70	80	70
		Intake air temperature WB	˚F	67	60	67	60	67	60	67	60	67	60
	side
		Discharge air temperature DB	˚F	54	114	57	105	54	114	57	106	55	107
	Outdoor	Intake air temperature DB	˚F	95	47	95	47	95	47	95	47	95	47
	side
		Intake air temperature WB	˚F	75	43	75	43	75	43	75	43	75	43
	SHF			0.70	–	0.78	–	0.70	–	0.77	–	0.71	–
	BF			0.12	–	0.10	–	0.11	–	0.11	–	0.15	–

11

5-4-2. Cooling only

Representative matching

Mode

	Total	Capacity
		Input
		Indoor unit model
		Phase
	circuit	Cycle
		Voltage
	Electrical	Current
		Outdoor unit model
		Phase
		Cycle
		Voltage
		Current
		Discharge pressure
		Suction pressure
		Discharge temperature
	circuit	Condensing temperature
		Suction temperature
	Refrigerant
		Ref. Pipe length
		Discharge pressure
		Suction pressure
		Discharge temperature
		Condensing temperature
		Suction temperature
		Ref. Pipe length
	Indoor	Intake air temperature DB
		Intake air temperature WB
	side
		Discharge air temperature DB
	Outdoor	Intake air temperature DB
	side	Intake air temperature WB
	Indoor	Intake air temperature DB
		Intake air temperature WB
	side
		Discharge air temperature DB
	Outdoor	Intake air temperature DB
	side	Intake air temperature WB
	SHF
	BF

	PKA-A12GA	PKA-A18GA	PKA-A24FA	PKA-A30FA	PKA-A36FA	PLA-A42BA
	COOLING	COOLING	COOLING	COOLING	COOLING	COOLING
BTU/h	12,000	18,000	24,000	30,000	34,200	42,000
W	1,210	2,240	2,650	4,400	5,030	4,600
	PKA-A12GA	PKA-A18GA	PKA-A24FA	PKA-A30FA	PKA-A36FA	PLA-A42BA
	Single	Single	Single	Single	Single	Single
	60Hz	60Hz	60Hz	60Hz	60Hz	60Hz
	230V	230V	230V	230V	230V	230V
	0.33A	0.33A	0.43A	0.43A	0.52A	1.00A
	PUY-A12NHA2	PUY-A18NHA2	PUY-A24NHA2	PUY-A30NHA2	PUY-A36NHA2	PUY-A42NHA2
	Single	Single	Single	Single	Single	Single
	60Hz	60Hz	60Hz	60Hz	60Hz	60Hz
	230V	230V	230V	230V	230V	230V
	5.09A	9.71A	11.45A	19.29A	22.03A	20.35A
MPa	2.99	3.14	2.85	2.99	3.22	2.83
MPa	1.00	0.81	0.86	0.72	0.76	0.82
:	72.8	81.6	72.6	83.7	88.8	73.4
:	50.7	52.0	46.8	49.1	51.5	47.5
:	11.1	4.8	7.0	1.2	3.3	4.9
m	7.6	7.6	7.6	7.6	7.6	7.6
PSIG	434	455	414	434	467	410
PSIG	145	118	125	104	110	120
F	163	179	163	183	192	164
F	123	126	116	120	125	118
F	52	41	45	34	38	40
ft	25	25	25	25	25	25
:	26.7	26.7	26.7	26.7	26.7	26.7
:	19.4	19.4	19.4	19.4	19.4	19.4
:	14.8	12.2	13.7	12.1	13.7	12.9
:	35	35	35	35	35	35
:	23.9	23.9	23.9	23.9	23.9	23.9
˚F	80	80	80	80	80	80
˚F	67	67	67	67	67	67
˚F	59	54	57	54	57	55
˚F	95	95	95	95	95	95
˚F	75	75	75	75	75	75
	0.86	0.70	0.78	0.70	0.77	0.71
	0.09	0.12	0.10	0.11	0.11	0.15

12

6 OUTLINES AND DIMENSIONS

OUTDOOR UNIT	Unit : mm<inch>
PUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BS

23/32>-	400<15-25/32>
	347.5<13-11/16>	[33<1-5/16> drain hole
43.6<1
	Air intake	155
152<6>		300<11-13/16>	330<13>	3/8>-365<14

Air intake

45.4<1-25/32>

4-oval hole

18<23/32>

Handle

600<23-5/8>

300<11-13/16>

10<3/8>

150<5-29/32> 287.5<11-11/32>

Air outlet 40<1-9/16>

Installation bolt pitch 500<19-11/16>

800<31-1/2>

32.5<1-9/32>

23<29/32>

22<7/8>

2-ø22.2<7/8> 1/2 conduit hole

1/2> 38<1-1/2>	155<6-3/32>	90<3-17/32>
241<9-

Service port

69<2-23/32>

Service panel

Service panel for charge plug

Connection for liquid pipe

FLARE [6.35<1/4>

		Connection for gas pipe
	144<5-21/32>	FLARE [12.7<1/2>
	183<7-7/32>

Free space around the outdoor unit (basic example)

Basically open	Min.100mm<3-15/16> as long as
	of the unit
	no obstacle is placed on the
	rear and right-and-left sides

Min.100mm<3-15/16>	Min.350mm<13-25/32>
*1
*2	*1

Min.500mm<19-11/16> Min.100mm<3-15/16>

2 sides should be open in the right, left and rear side.

Minimum installation space for outdoor unit

*1 In the place where short cycle tends to occur, cooling and heating capacity and power consumption might get lowered by 10%. Air outlet guide (optional PAC-SG58SG-E) will help them improve.

*2 If air is discharged to the wall, the surface might get stained.

FOUNDATION BOLTS

Please secure the unit firmly

with 4 foundation M10<W3/8> bolts. (Bolts, washers and nut must

be purchased locally.)

<Foundation bolt height>

Max.

18mm<23/32>

FOUNDATION

PIPING-WIRING DIRECTION

Piping and wiring connection can

be made from the rear direction only.

13

PUZ-A24/30/36NHA2 PUZ-A24/30/36NHA2-BS PUY-A24/30/36NHA2 PUY-A24/30/36NHA2-

Unit : mm<inch>

	holenotchedShapedU-2 M10<W3/8>)Bolt(Foundfation	7/8>	417<16-13/32>	21/32>-<142	hole36oval12-2o	M10<W3/8>)Bolt(Foundation
			370<14-9/16>
		19<3/4>		28<1-3/32>
			56<2-7/32>	53<2-3/32>
			45<1-25/32>
		175 <6-		5/8>
				66 <2-
	Rear Air Intake	600 <23-5/8>		Air outlet
		175 <6-7/8>
			330<13>	30<1-3/16>

PIPING-WIRING DIRECTIONS	Piping and wiring connections	can be made from 4 directions:	front, right, rear and below.		Side Air Intake
4
FOUNDATION BOLTS	Please secure the unit firmly	with 4 foundation (M10<W3/8>)	bolts. (Bolts and washers must	be purchased locally.)	<Foundation bolt height>
3	neededspaceofDimensions	areaccessservicefor	diagram.belowtheinshown
SPACESERVICE2					<3-15/16>
					100mm
					.Min
FREE SPACE (Around the unit)	The diagram below shows a	basic example.	Explantion of particular details is	given in the installation manuals etc.	FREE
1

FOUNDATION

30mm<1-3/16>
	.Max
<19-11/16>
500mm
Min.
	Min. 500mm <19-11/16>
Min. 10mm <3/8>		Service space
Min. 10mm	<3/8>	Min. 100mm	<3-15/16>
Min. 10mm	<3/8>	Min. 500mm	<19-11/16>

Block supplyPowerwiring Indoor/Outdoor. wiring		panel		670<26-3/8>		pipingFrontcover	Rearpiping cover	Bottompiping hole (Knockout)
					*1447<17-19/32>
Terminal Left . . . Reight .		Service	Handle		*1443<17-7/16>
				1	2	71<2-13/16>			Drain hole (5-[33<1-5/16>)
						13/16>
						71 <2-			145 23/32>
950<37-13/32>	11/16>-<12322
									220	23/32>-<521/32>-<8 <5-23/32> <5-
	terminal Earth								145
									145
					23<29/32>			219<8-5/8>	81<3-3/16>	3/16>-
	Handle				473<18-5/8>					30 <1
				943<37-1/8>

Air Intake	Handle
Side	Handle
Rear Air Intake

Example of Notes

1····Refrigerant GAS pipe connction (FLARE)[15.88(5/8) 2····Refrigerant LIQUID pipe connection (FLARE)[ 9.52(3/8) *1···· Indication of STOP VALVE connection location.

Handle

Air Intake

When installing the conduit, set the attachment to the inner side of each panel.	1/2 Conduit attachment 22.2<7/8>
	2-[
Conduit hole	(2-[27<1-1/16>Knockout) Rear trunking hole (Knockout)
	40 <1-9/16>

31<1-7/32>
			74<2-19/32>
40<1-9/16>
92		5/8>	Rear piping hole	(Knockout)
	-
[	<3
			92<3-5/8>		65<2-9/16>

Conduithole	[27<1-(2 -1/16>Knockout) Right trunking hole	(Knockout)		-25/32>	55<2-3/16>			27<1-1/16>
				9/16>-<140		63<2-1/2>		3/16>-55<2	5/8>-92<3
				45<1
						73<2-7/8>		23<29/32
						92	5/8>
							-
						[	3
							<
DetailsHole	hole	(Knockout)		<2-31/32>				19<3/4>
	pipingRight			25/32>-45<1
			75
					63<2 - 1/2>			73<2 - 7/8>
						92<3-5/8>
						27<1-1/16>		23<29/32>
						73<2-7/8>		23<29/32>
						<2-1/2>
PipingKnockout	Conduithole [-(227<1-1/16>Knockout)			<140-9/16>		63		holepipingFront (Knockout)
						holetrunkingFront (Knockout)
						55<2 - 3/16>		27<1 - 1/16>
							5/8>	5/8> - 92<3	9/16> - 65<2
						92-
						[<3

14

PUZ-A42NHA2 PUZ-A42NHA2-BS PUY-A42NHA2 PUY-A42NHA2-BS

Unit : mm<inch>

holenotchedShapedU-2 M10<W3/8>)Bolt(Foundation	175	7/8>-<6	417<16-13/32>	21/32>-42<1	holeOval3612-2o M10<W3/8>)Bolt(Foundation	BlockTerminal wiringsupplyPower···Left Indoor/Outdoor···Rightwiring
		19<3/4>	370<14-9/16>	28<1-3/32>
			56<2-7/32>	53<2-3/32>
			45<1-25/32>
				66<2-5/8>
		600<23-5/8>			950<37-13/32>	Earth terminal
Intake Air Rear	175	7/8> - <6		outlet Air		11/16> - 322<12

PIPING-WIRING DIRECTIONS	Piping and wiring connections	can be made from 4 directions:	front, right, rear and below.
4
FOUNDATION BOLTS	Please secure the unit firmly	with 4 foundation (M10<W3/8>)	bolts. (Bolts and washers must	be purchased locally.)
3
SERVICE SPACE	Dimensions of space needed	for service access are	shown in the below diagram.
2
FREE SPACE (Around the unit)	The diagram below shows a	basic example.	Explantion of particular details is	given in the installation manuals etc.
1

330<13>

30<1-3/16>

Handle

Side Air Intake

				Air Intake	Side Air Intake
				Rear
<Foundation bolt height>	FOUNDATION
30mm<1-3/16>
	.Max
<5-29/32>		<19-11/16>
150mm		500mm
.Min		Min.
			500mm	11/16>-<19
			Min.
		Min. 10mm<3/8>	Service space
FREE	Min. 10mm	<3/8>			Min. 150mm	<5-29/32>
	Min. 10mm	<3/8>			Min. 1000mm	<39-3/8>

panelService	Handle	1076<42-3/8>	Frontpiping cover	Rearpiping cover	pipingBottomhole (Knockout)
		1447<17-19/32>	*
		1443<17-7/16>	*

1	2	71<2-13/16>
		71<2-13/16>	Drain hole	5-[33<1-5/16>
			145	<5-23/32>
			145	<5-23/32>
			145	<5-23/32>
			220	<8-21/32>
	23<29/32>	219<8-5/8>	81<3-3/16>	3/16>-30<1
635<25>	371<14-19/32>
1350<53-5/32>

When installing the conduit. set the attachment to the inner side of each panel.

1/2 Conduit attachment

Handle

Handle

			Conduit hole	(2-[27<1-1/16>Knockout)	Right trunking hole (Knockout)
NotesofExample	Handle	intake	KnockoutPipingHole Details	holeConduit	[1/16>Knockout)-27<1-(2
	connctionpipeGASRefrigerant... (FLARE) [15.88(5/8) ...connectionpipeLIQUIDRefrigerant(FLARE) [ 9.52(3/8) ...VALVESTOPofIndicationconnection location.	Air
				pipingRighthole	(Knockout)
	1 2 *1

31<1-7/32>

2-[22.2<7/8>		40<1-9/16>	74<2-19/32>
Conduit hole	(2-[27<1-1/16>Knockout)	Rear trunking hole (Knockout)	92	-	5/8>	Rearpiping hole (Knockout)
			[
40<1-9/16>				<3		92<3-5/8>
							65<2-9/16>
45<1-25/32>	55<2-3/16>					27<1-1/16>
	63<2-1/2>
	40<1-9/16>	73<2-7/8>				23<29/32>
		92	5/8>			3/16>-55<2	-92<35/8>
			-
		[	<3

75

<2-31/32>

19<3/4>

		63<2-1/2>	73<2-7/8>
	92<3-5/8>
	25/32>-45<1	27<1-1/16>	23<29/32>
		73<2-7/8>	23<29/32>
		<2-1/2>
		63	27<1-1/16>
		55<2-3/16>

40<1-9/16>	5/8>	5/8>-92<3	65<2-9/16>
	-
	92
	<3
	[

Front trunking hole (Knockout)

Front piping hole (Knockout)

15

7 WIRING DIAGRAM

PUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BS

[LEGEND]

SYMBOL		NAME		SYMBOL		NAME		SYMBOL	NAME
TB1		Terminal Block<Power Supply, Indoor/Outdoor>		PFC		Converter		SW9	Switch
MC		Motor for Compressor		IPM		Power Module		LED1,LED2	LED<Operation Inspection Indicators>
MF1		Fan Motor		CB1~CB3		Main Smoothing Capacitor		F1~F4	Fuse<T6.3AL250V>
21S4		Solenoid Valve (Four-Way Valve)	N.F.			Noise Filter Circuit Board		SWP	Switch<Pump Down>
63H		High Pressure Switch		LI/LO		Connection Terminal<L1-Phase>		CN31	Connector<Emergency Operation>
TH3		Thermistor<Outdoor Pipe>		NI/NO		Connection Terminal<L2-Phase>		SS	Connector<Connection for Option>
TH4		Thermistor<Discharge>		EI,E2,E3		Connection Terminal<Ground>		CNM	Connector<A-Control Service Inspection Kit>
TH6		Thermistor<Outdoor 2-Phase Pipe>		52C		52C Relay		CNMNT	Connector
TH7		Thermistor<Outdoor>	C.B.			Controller Circuit Board			<Connected to Optional M-NET Adapter Board>
TH8		Thermistor<Heatsink>		SW1		Switch<Forced Defrost, Defect History		CNVMNT	Connector
LEV-A		Electronic Expansion Valve				Record Reset, Refrigerant Address>			<Connected to Optional M-NET Adapter Board>
ACL		Reactor		SW4		Switch<Test Operation>		CNDM	Connector
CY1,CY2		Capacitor		SW5		Switch<Function Switch>			< Connection for Option (Contact Input)>
P.B.		Power Circuit Board		SW6		Switch<Model Select>		X51, X52	Relay
	R/S	Connection Terminal<L1/L2-Phase>		SW7		Switch<Function Setup>
	U/V/W	Connection Terminal<U/V/W-Phase>		SW8		Switch<Function Setup>	When M-NET adapter is connected

63H

LEV-A

5

CN5

(WHT)

SW11

TH7 TH6

TH3 TH4

M

5

SW1

3

1

C. B.

5

LED2

t°

t°

t°

t°

SW12

LED3

w1

w1

MF1

1

CNF1

LED4

7 (WHT)

1

4

1 2

2 1

1

6

1

3

1

5

SW9 SW7

MS

SWP SW8 SW5

SW1 SW6

M-NET SUBSTRATE

TH7/6

TH3 TH4

LEV-A

CNVMNT CNMNT

3~

2

CN2M

(WHT)

(RED)

(WHT) (WHT)

(WHT)

(WHT)

(WHT)

CND

LED2

LED1

1

LED5

LED1

(WHT)

3

1

1

1

CNM

14

3

SW4

63H

(WHT)

CN31

(YLW)

CN52C

3

CN2

CN4

(RED)

CNDM

(WHT) 1 3

3

(WHT)

(WHT)

1

2

A

B

S

1

TRANS

1

7

1 2

2

5

TB7

CNDC

2

CN51

(WHT)

M-NET

(PNK)

5

F2

F3

X52

X51

1

CNAC

CNS

(WHT)

(WHT)

F1

1

2

F4

21S4 3

1

SS 3

1

3

1

3

4

(GRN)

(WHT)

21S4

PUZ only

RED

RED

RED

WHT

WHT

WHT

N. F.

ACL

MS MC

LO

NO

W

3~

U

V

52C

1

2

P. B.

BLK

WHT

RED

2

CN5

1

2

CN52C

(BLK)

PFC

(RED) 2

IPM

CN4

1

2

(WHT) 2

E3

U

R

1

V

CN3 1

RED

W

(WHT) 2

3

WHT

t°

CNAC2

S

(RED)

CN5

(RED)

TH8

5

1

CN2

1

(WHT)

2

CB1

CB2

CB3

7

2

E2

1

w1 MODEL SELECT

CNAC1

3

MODEL

SW6

SW5-5.6

w2

(WHT)

ON

ON

PUZ-A18N OFF

OFF

1

2

3

4

5

6

7

8

1

2

3

4

5

6

PUY-A12N

ON

ON

U

U

OFF

2

3

4

5

6

7

8

OFF

1

2

3

4

5

6

1

YLW

ORN

LI

EI

NI

BRN

PUY-A18N

ON

ON

OFF

2

3

4

5

6

7

8

OFF

1

2

3

4

5

6

1

w2. SW5-1 to 4 : Function switch

RED

BLU

GRN

CY1

CY2

L1

L2

GR

S1

S2

S3

TB1

INDOOR

UNIT

M-NET ADAPTER

SYMBOL	NAME
TB7	Terminal Block<M-net connection>
CN5	Connector<Transmission>
CND	Connector<Power Supply>
CN2M	Connector<M-NET communication>
SW1	Switch<Status of communication>
SW11	Switch<Address setting : 1st digit>
SW12	Switch<Address setting : 2nd digit>
LED1	LED<Power Supply : DC5V>
LED2	LED<Connection to Outdoor Unit>
LED3	LED<Transmission : Sending>
LED4	LED<Transmission : Recelving>
LED5	LED<Power Supply : DC12V>

POWER SUPPLY

208 / 230V 60Hz wUse copper supply wires.

16

PUZ-A24NHA2 PUZ-A24NHA2-BS PUY-A24NHA2 PUY-A24NHA2-BS

[LEGEND]

SYMBOL	NAME		SYMBOL	NAME		SYMBOL		NAME
TB1	Terminal Block<Power Supply, Indoor/Outdoor>		PFC	Converter		LED1,LED2		LED<Operation Inspection Indicators>
MC	Motor for Compressor		IPM	Power Module		F1~F4		Fuse<T6.3AL250V>
MF1	Fan Motor		CB1~CB3	Main Smoothing Capacitor		SWP		Switch<Pump Down>
21S4	Solenoid Valve (Four-Way Valve)	N.F.		Noise Filter Circuit Board		CN31		Connector<Emergency Operation>
63H	High Pressure Switch		LI/LO	Connection Terminal<L1-Phase>		SS		Connector<Connection for Option>
SV	Solenoid Valve (Bypass Valve)		NI/NO	Connection Terminal<L2-Phase>		CNM		Connector<A-Control Service Inspection Kit>
TH3	Thermistor<Outdoor Pipe>		EI,E2,E3	Connection Terminal<Ground>		CNMNT		Connector
TH4	Thermistor<Discharge>		52C	52C Relay				<Connected to Optional M-NET Adapter Board>
TH6	Thermistor<Outdoor 2-Phase Pipe>	C.B.		Controller Circuit Board		CNVMNT		Connector
TH7	Thermistor<Outdoor>		SW1	Switch<Forced Defrost, Defect History				<Connected to Optional M-NET Adapter Board>
TH8	Thermistor<Heatsink>			Record Reset, Refrigerant Address>		CNDM		Connector
LEV-A	Electronic Expansion Valve		SW4	Switch<Test Operation>				< Connection for Option (Contact Input)>
ACL	Reactor		SW5	Switch<Function Switch>		X51,X52,X55		Relay
CY1,CY2	Capacitor		SW6	Switch<Model Select>
P.B.	Power Circuit Board		SW7	Switch<Function Setup>

R/S

Connection Terminal<L1/L2-Phase>

SW8

Switch<Function Setup>

U/V/W

Connection Terminal<U/V/W-Phase>

SW9

Switch

When M-NET adapter is connected

63H

LEV-A

5

(WHT)

SW11

TH7 TH6

5

CN5

TH3 TH4

M

SW1

C. B.

3

5

1

LED2

t≈

t°

t°

t°

SW12

LED3

w1

w1

MF1

1

CNF1

LED4

7 (WHT)

1

4

1 2

2 1

1

6

1

3

1

5

SW9 SW7

MS

LED2

SW8SWPSW4 SW5

SW1SW6

LED5

(WHT)

LED1

63H

LED1

(WHT)

3~

TH7/6

TH3 TH4

LEV-A

CNVMNT CNMNT

CN2M

(RED)

(WHT) (WHT)

(WHT)

(WHT)

(WHT)

1

CND

2

(WHT)

3

1

1 3

1

CNM

14

(YLW)

CN52C

CN31

3

CN2

CN4

(RED)

CNDM

(WHT)

3

TRANS

1 3

A

B

S

1

7

1 2

1

2

(WHT)

(WHT)

1

2

2

1 5

TB7

CNDC

5

CN51

(WHT)

M-NET

(PNK)

F2

CNAC

F3

X52

X55

X51

CNS

(WHT)

(WHT)

F1

1

2

F4

21S4 3

1

3

1 SV2

3

1

SS

3

1

3

4

(GRN)

(BLU)

(WHT)

PUZ only

21S4

SV

RED

RED

RED

WHT

WHT

WHT

N. F.

ACL

MS MC

LO

NO

3~

W

V

U

52C

1

2

P. B.

BLK

WHT

RED

2

CN5 1

2

CN52C

(BLK)

PFC

(RED) 2

IPM

CN4 1

2

E3

(WHT) 2

1

R

U

TH8

V

CN3 1

3

RED

CNAC2

1

5

(RED)

CN5

(RED)

WHT

W

(WHT) 2

t°

S

CN2

1

2

(WHT)

2

CB1

CB2

CB3

7

E2

w1 MODEL SELECT

MODEL

SW6

SW5-5.6

w2

1

PUZ-A24N

ON

ON

OFF

OFF

3

1

2

3

4

5

6

7

8

1

2

3

4

5

6

CNAC1 (WHT)

U

PUY-A24N

ON

ON

U

OFF

OFF

ORN

LI

NI

EI

1 2 3 4 5 6 7 8

1 2 3 4 5 6

YLW

BRN

w2. SW5-1 to 4 : Function switch

M-NET ADAPTER

RED

BLU

GRN

CY1

CY2

SYMBOL

NAME

L1

L2

GR S1 S2 S3 TB1

TB7

Terminal Block<M-net connection>

CN5

Connector<Transmission>

CND

Connector<Power Supply>

CN2M

Connector<M-NET communication>

INDOOR

SW1

Switch<Status of communication>

POWER SUPPLY

UNIT

SW11

Switch<Address setting : 1st digit>

208 / 230V 60Hz

SW12

Switch<Address setting : 2nd digit>

wUse copper supply wires.

LED1

LED<Power Supply : DC5V>

LED2

LED<Connection to Outdoor Unit>

LED3

LED<Transmission : Sending>

LED4

LED<Transmission : Recelving>

LED5

LED<Power Supply : DC12V>

17

PUZ-A30/36NHA2 PUZ-A30/36NHA2-BS PUY-A30/36NHA2 PUY-A30/36NHA2-BS

[LEGEND]

SYMBOL	NAME		SYMBOL	NAME		SYMBOL	NAME
TB1	Terminal Block<Power Supply, Indoor/Outdoor >	P.B.		Power Circuit Board		SW4	Switch<Test Operation>
MC	Motor for Compressor		TABU/V/W	Connection Terminal<U/V/W-Phase>		SW5	Switch<Function Switch>
MF1	Fan Motor		TABS/T	Connection Terminal<L1/L2-Phase>		SW6	Switch<Model Select>
21S4	Solenoid Valve (Four-Way Valve)		TABP1/P2	Connection Terminal<DC Voltage>		SW7	Switch<Function Setup>
SV	Solenoid Valve (Bypass Valve)		TABN1/N2	Connection Terminal<DC Voltage>		SW8	Switch<Function Setup>
63H	High Pressure Switch		DS2, DS3	Diode Bridge		SW9	Switch
TH3	Thermistor<Outdoor Pipe>		IPM	Power Module		SWP	Switch<Pump Down>
TH4	Thermistor<Discharge>	N.F.		Noise Filter Circuit Board		CN31	Connector<Emergency Operation>
TH6	Thermistor<Outdoor 2-Phase Pipe>		LI/LO	Connection Lead<L1-Phase>		LED1,LED2	LED<Operation Inspection Indicators>
TH7	Thermistor<Outdoor>		NI/NO	Connection Lead<L2-Phase>		SS	Connector<Connection for Option>
TH8	Thermistor<Heatsink>		EI, E2	Connection Terminal<Ground>		CNM	Connector<A-Control Service Inspection Kit>
LEV-A	Electronic Expansion Valve		52C	52C Relay		CNMNT	Connector<Connected to Optional M-NET Adapter Board>
DCL	Reactor	C.B.		Controller Circuit Board		CNVMNT	Connector<Connected to Optional M-NET Adapter Board>
CY1, CY2	Capacitor		F1~F4	Fuse<T6.3AL250V>		CNDM	Connector< Connection for Option (Contact Input)>
ACTM	Active Filter Module		SW1	Switch<Forced Defrost, Defect History Record		X51,X52,X55	Relay
				Reset, Refrigerant Address>

When M-NET adapter is connected

63H

LEV-A

5

SW11

TH7TH6

TH3 TH4

M

3

5

CN5 (WHT)

SW1

C. B.

5

1

t°

t°

t°

t°

LED2

SW12

LED3

CNF1

w1

w1

MF1

1

LED4

MS

7 (WHT)

1

4

1 2

2 1

1

6

1

3

1

5

SW4SWPSW8SW5

SW1 SW6

SW9 SW7

M-NET SUBSTRATE

3~

TH7/6

TH3

TH4

LEV-A

CNVMNT CNMNT

2

CN2M

(RED)

(WHT)(WHT)

(WHT)

(WHT)

(WHT)

LED2

1

CND

LED1

LED1

(WHT)

1

3

1

CNM

14

3

1

63H

(WHT)

CN31

LED5 (WHT)

(YLW)

CN52C

3

CN2

CN4

3

(RED)

CNDM

(WHT)

(WHT)

(WHT)

1 2

A

B

S

2

TRANS

1

7

1 2

1

13

TB7

CNDC

2

2

CN51

(WHT)

1 5

M-NET

(PNK)

F2

F3

7

CNAC

X52

X55

X51

CNS

(WHT)

(WHT)

1

2

3

1 21S4

3

1 SV2

3

1 SS

F1

F4

3

1

3

4

(GRN)

(BLU)

(WHT)

21S4

SV

PUZ only

WHT

BLU

N. F.

LO

NO

52C

1

2

2

P. B.

CN52C

(BLK)

4

1

TABT

DS3

BLU

CNAF

(WHT)

CNDC

3

(PNK) 2

TABS WHT

6

7

1

DS2

1

1

IPM

3

CNAC2

(RED)

CN2

TABP1 RED

(WHT)

TABP2

RED

TABN1

TH8

7

E2

1 CN3

BLK

U

t°

2

2(WHT)

1

2

1 CN5

3

2(RED)

2

2

1 CN4

(RED)

2(WHT)

TABV

TABW

TABN2

1

CN5

TABU

TABN

CNAC1

(WHT)

TABP

RED

WHT BLK

WHT

U

V

W

LI

U

NI

U

EI

MS

3~ MC

w1 MODEL SELECT

MODEL								SW6															SW5-5.6 w2
PUZ-A30N	ON																			ON
	OFF																			OFF
				1		2		3		4		5		6		7		8					1		2		3		4		5		6
PUZ-A36N	ON																			ON
	OFF																			OFF
		1			2		3		4			5	6		7		8				1			2		3		4		5		6
PUY-A30N	ON																			ON
	OFF																			OFF
		1			2		3		4			5	6		7		8				1			2		3		4		5		6
PUY-A36N	ON																			ON
	OFF																			OFF
		1			2		3		4			5	6		7		8				1			2		3		4		5		6

w2. SW5-1 to 4 : Function switch

	DCL		4
	BLK		WHT
RED	L1	L2	1	P6 RED
				N1
BLK				N2	WHT

Io

ACTM

RED	BLU	GRN	YLW	ORN	BRN
L1	L2	GR	S1	S2	S3

INDOOR

UNIT

POWER SUPPLY 208 / 230V 60Hz

wUse copper supply wires.

CY1

CY2

TB1

M-NET ADAPTER

SYMBOL	NAME
TB7	Terminal Block<M-net connection>
CN5	Connector<Transmission>
CND	Connector<Power Supply>
CN2M	Connector<M-NET communication>
SW1	Switch<Status of communication>
SW11	Switch<Address setting : 1st digit>
SW12	Switch<Address setting : 2nd digit>
LED1	LED<Power Supply : DC5V>
LED2	LED<Connection to Outdoor Unit>
LED3	LED<Transmission : Sending>
LED4	LED<Transmission : Recelving>
LED5	LED<Power Supply : DC12V>

18

PUZ-A42NHA2 PUZ-A42NHA2-BS PUY-A42NHA2 PUY-A42NHA2-BS

[LEGEND]

SYMBOL	NAME		SYMBOL	NAME	SYMBOL	NAME
TB1	Terminal Block<Power Supply, Indoor/Outdoor >	P.B.		Power Circuit Board	SW4	Switch<Test Operation>
MC	Motor for Compressor		TABU/V/W	Connection Terminal<U/V/W-Phase>	SW5	Switch<Function Switch>
MF1,MF2	Fan Motor		TABS/T	Connection Terminal<L1/L2-Phase>	SW6	Switch<Model Select>
21S4	Solenoid Valve (Four-Way Valve)		TABP1/P2/P	Connection Terminal<DC Voltage>	SW7	Switch<Function Setup>
63H	High Pressure Switch		TABN1/N2/N	Connection Terminal<DC Voltage>	SW8	Switch<Function Setup>
63L	Low Pressure Switch		DS2, DS3	Diode Bridge	SW9	Switch
TH3	Thermistor<Outdoor Pipe>		IPM	Power Module	SWP	Switch<Pump Down>
TH4	Thermistor<Discharge>	N.F.		Noise Filter Circuit Board	CN31	Connector<Emergency Operation>
TH6	Thermistor<Outdoor 2-Phase Pipe>		LI/LO	Connection Lead<L1-Phase>	LED1,LED2	LED<Operation Inspection Indicators>
TH7	Thermistor<Outdoor>		NI/NO	Connection Lead<L2-Phase>	SS	Connector<Connection for Option>
TH8	Thermistor<Heatsink>		EI, E2	Connection Terminal<Ground>	CNM	Connector<A-Control Service Inspection Kit>
LEV-A	Electronic Expansion Valve		52C	52C Relay	CNMNT	Connector<Connected to Optional M-NET Adapter Board>
DCL	Reactor	C.B.		Controller Circuit Board	CNVMNT	Connector<Connected to Optional M-NET Adapter Board>
CY1, CY2	Capacitor		F1~F4	Fuse<T6.3AL250V>	CNDM	Connector< Connection for Option (Contact Input)>
ACTM	Active Filter Module		SW1	Switch<Forced Defrost, Defect History Record	X51,X52,X55	Relay
CB	Main Smoothing Capacitor			Reset, Refrigerant Address>		When M-NET adapter is connected

63L

63H

LEV-A

TH7TH6

TH3 TH4

M

3

C. B.

5

t°

t°

t°

t°

1

CNF1

w1

w1

MF1

1

4

1 2

2 1

1

6

1 3

1

5

SW5

SW7

MS

7(WHT)

SW6

TH7/6

TH3

TH4

LEV-A

CNVMNT CNMNT

3~

(RED)

(WHT)(WHT)

(WHT)

(WHT)

(WHT)

SW4SWPSW8

SW9

MF2

1

CNF2

LED2

LED1

SW1

MS

7(WHT)

1

3

1 3

1

CNM

14

3~

63L

63H

(WHT)

CN31

(RED)

(YLW)

CN52C

3

CN2

CN4

(RED)

CNDM

(WHT)

1 3

(WHT)

1 2

1 (WHT) 7

2

TRANS

1 2

1

2

1 5

CNDC

2

CN51

(WHT)

(PNK)

7

F2

CNAC

F3

X52

X55

X51

CNS

(WHT)

(WHT)

F1

1

2

F4

3

1 21S4

3

1 SV2

3

1 SS

3

1

3

4

(GRN)

(BLU)

(WHT)

21S4

w2 PUZ only

		5		(WHT)		SW11
5		CN5			SW1
		1
			LED2			SW12
			LED3
			LED4
			M-NET SUBSTRATE
		2	CN2M	(WHT)
		1			CND
					(WHT)
			LED5	LED1
					3	1
					3
A	B	S
		TB7
		M-NET

WHT

BLU

N. F.

LO

NO

52C

1

2

2

P. B.

CN52C

(BLK)

4

1

TABT

DS3

BLU

CNAF

(WHT)

CNDC

3

(PNK)

2

TABS

6

7

1

DS2

WHT

1

1

IPM

3

CNAC2

(RED)

CN2

TABP1

RED

(WHT)

TABP2

RED

TABN1

TH8

7

E2

1 CN3

U

t°

2

2(WHT)

BLK

1

2

1 CN5

3

2

2(RED)

2

1 CN4

(RED)

CN5

WHT

2(WHT)

TABU

TABV

TABW

TABN2

1

TABN

CNAC1

(WHT)

CB

TABP

RED

WHT

WHT

RED

BLK

U

EI

U

V

W

LI

NI

U

M

3~ MC

DCL

4

CY1

w1 MODEL SELECT

RED

BLU

GRN

YLW

ORN

BRN

CY2

BLK

WHT

MODEL

SW6

SW5-5.6

w2

ON

ON

L1

L2

1

P6

L1

L2

GR

S1

S2

S3

TB1

PUZ-A42N OFF

2

3

4

5

6

7

8

OFF

1

2

3

4

5

6

RED

RED

1

N1

ON

ON

BLK

N2

WHT

PUY-A42N OFF

2

3

4

5

6

7

8

OFF

1

2

3

4

5

6

Io

INDOOR

1

w2. SW5-1 to 4 : Function switch

ACTM

POWER SUPPLY

UNIT

M-NET ADAPTER

208 / 230V 60Hz

SYMBOL	NAME	wUse copper supply wires.
TB7	Terminal Block<M-net connection>
CN5	Connector<Transmission>
CND	Connector<Power Supply>
CN2M	Connector<M-NET communication>
SW1	Switch<Status of communication>
SW11	Switch<Address setting : 1st digit>
SW12	Switch<Address setting : 2nd digit>
LED1	LED<Power Supply : DC5V>
LED2	LED<Connection to Outdoor Unit>
LED3	LED<Transmission : Sending>
LED4	LED<Transmission : Recelving>
LED5	LED<Power Supply : DC12V>

19

8 WIRING SPECIFICATIONS

8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT (A-control application)

The following connection patterns are available.

The outdoor unit power supply patterns vary on models.

1:1 System				Simultaneous twin system
	C		F		C		F	F
	L1				L1
A	B L2			A	B L2
	GR	D			GR	D
	S1		S1		S1		S1	S1
	S2		S2		S2		S2	S2
	S3		S3		S3		S3	S3
		G E	1			G E	1	1
			2				2	2 G

* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.

A Outdoor unit power supply

B Wiring circuit breaker or isolating switch C Outdoor unit

D Indoor unit/outdoor unit connecting cords E Remote controller

F Indoor unit

G Indoor unit earth

Indoor unit model

PLA-A12, 18, 24, 30

PLA-A36, 42

PCA, PKA

Indoor unit power supply

–

–

Minimum circuit ampacity

1A

2A

Maximum rating of overcurrent protective device

15A

15A

Outdoor unit model

A12

A18

A24

A30

A36

A42

Outdoor unit power supply

Single, 208/230 V, 60 Hz

Single, 208/230 V, 60 Hz

Single, 208/230 V, 60 Hz

Single, 208/230 V, 60 Hz

Single, 208/230 V, 60 Hz

Single, 208/230 V, 60 Hz

Breaker size

15A

15A

25A

30A

30A

30A

Minimum circuit ampacity

13A

13A

18A

25A

25A

26A

Maximum rating of overcurrent protective device

15A

20A

30A

40A

40A

40A

o

Outdoor unit power supply

2 o Min. AWG 14

2 o Min. AWG 14

2 o Min. AWG 12

2 o Min. AWG 10

2 o Min. AWG 10

2 o Min. AWG 10

Wiring Wire No.

Outdoor unit power supply earth

1 o Min. AWG 14

1 o Min. AWG 14

1 o Min. AWG 12

1 o Min. AWG 10

1 o Min. AWG 10

1 o Min. AWG 10

Indoor unit-Outdoor unit

*1

3 o AWG 16 (polar)

3 o AWG 16 (polar)

3 o AWG 16 (polar)

3 o AWG 16 (polar)

3 o AWG 16 (polar)

3 o AWG 16 (polar)

size

Indoor unit earth

*1

1 o Min. AWG 16

1 o Min. AWG 16

1 o Min. AWG 16

1 o Min. AWG 16

1 o Min. AWG 16

1 o Min. AWG 16

Remote controller-Indoor unit

*2

2 o AWG 22 (Non-polar)

2 o AWG 22 (Non-polar)

2 o AWG 22 (Non-polar)

2 o AWG 22 (Non-polar)

2 o AWG 22 (Non-polar)

2 o AWG 22 (Non-polar)

Circuit

rating

Outdoor unit L1-L2

*3

AC 208/230 V

AC 208/230 V

AC 208/230 V

AC 208/230 V

AC 208/230 V

AC 208/230 V

Indoor unit-Outdoor unit S1-S2

*3

AC 208/230 V

AC 208/230 V

AC 208/230 V

AC 208/230 V

AC 208/230 V

AC 208/230 V

Indoor unit-Outdoor unit S2-S3

*3

DC 24 V

DC 24 V

DC 24 V

DC 24 V

DC 24 V

DC 24 V

Remote controller-Indoor unit

*3

DC 12 V

DC 12 V

DC 12 V

DC 12 V

DC 12 V

DC 12 V

*1. Max. 50 m, 165 ft

*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 1500 ft *3. The figures are NOT always against the ground.

S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.

Notes: 1.Wiring size must comply with the applicable local and national code. 2.Use copper supply wires.

3.Use wires rated 600V or more for the power supply cables and the indoor/outdoor unit connecting cables. 4.Install an earth longer than other cables.

230V Single phase

Isolator	3 poles isolator

S1	S1
A-Control S2	S2	A-Control
Outdoor Unit		Indoor Unit
S3	S3

Warning:

In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type .

20

8-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES

The following connection patterns are available.

The outdoor unit power supply patterns vary on models.

1:1 System

* The optional indoor power supply terminal kit is required.

	C			F
	L1			L1
A	B L2 G	B		L2	H
	GR			GR
	S1			S1
	S2			S2
	S3	D		S3
				1
			E
				2

A Outdoor unit power supply

B Wiring circuit breaker or isolating switch C Outdoor unit

D Indoor unit/outdoor unit connecting cords E Remote controller

F Indoor unit

G Indoor unit power supply H Option

* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.

Simultaneous twin system

	C			F H	F
	L1			L1	L1
A	B L2 G	B		L2	L2
	GR			GR	GR
	S1			S1	S1
	S2			S2	S2
	S3	D		S3	S3
				1	1
			E
				2	2

A Outdoor unit power supply

B Wiring circuit breaker or isolating switch C Outdoor unit

D Indoor unit/outdoor unit connecting cords E Remote controller

F Indoor unit

G Indoor unit power supply H Option

*Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.

If the indoor and outdoor units have separate power supplies, refer to the table below. Change the indoor unit electrical box wiring refering to the figure in the right and

the DIP switch settings of the outdoor unit control board.

		Indoor unit specifications
Indoor unit electrical box connector con-			Required
nection change
Label affixed near each wiring diagram			Required
for the indoor and outdoor units
Outdoor unit DIP switch settings (when
using separate indoor unit/outdoor unit		ON				3	(SW8)
power supplies only)		OFF	1	2

*There are three types of labels (labels A, B, and C). Affix the appropriate labels to the units according to the wiring method.

Connectors (connections when shipped from the factory are for indoor unit power supplied from outdoor unit)

	L2	BLUE	BLUE
	L1
	GR	YELLOW	YELLOW	CND/CN01
	S1			Indoor unit
				control board
	S2
	S3
	Indoor unit power supplied				L1
					L2
	from outdoor unit(When
					GR
	shipped from factory)
					S1
					S2
					S3

If the indoor and outdoor units have separate power supplies, change the connections of the connectors as shown in the following figure.

		Connectors
YELLOW	BLUE
BLUE	YELLOW	CND/CN01
		Indoor unit
		control board

Separate indoor unit/outdoor unit power supplies

Indoor unit model

Indoor unit power supply

Minimum circuit ampacity

Maximum rating of overcurrent protective device

Wiring	No.Wireosize	Indoor unit power supply
		Indoor unit power supply earth
		Indoor unit-Outdoor unit
		Indoor unit earth
		Remote controller-Indoor unit
Circuit	rating	Indoor unit L1-L2
		Indoor unit-Outdoor unit S2-S3
		Indoor unit-Outdoor unit S1-S2
		Remote controller-Indoor unit

	PLA-A12, 18, 24, 30	PLA-A36, 42
	PKA, PCA
	Single 208/230 V, 60 Hz	Single 208/230 V, 60 Hz
	1 A	2A
	15A	15A
	2 o Min. AWG16	2 o Min. AWG16
	1 o Min. AWG16	1 o Min. AWG16
*1	2 o AWG22 (polar)	2 o AWG22 (polar)
	–	–
*2	2 o AWG22 (Non-polar)	2 o AWG22 (Non-polar)
*3	AC 208/230 V	AC 208/230 V
*3	–	–
*3	DC24 V	DC24 V
*3	DC12 V	DC12 V

*1. Max. 50 m, 165 ft

*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft *3. The figures are NOT always against the ground.

Notes: 1. Wiring size must comply with the applicable local and national code.

2.Use copper supply wires.

3.Use wires rated 300V or more for the power supply cables.

4.Install an earth longer than other cables.

21

8-3. INDOOR - OUTDOOR CONNECTING CABLE

	Outdoor power supply		Wire No. o Size
		Max. 45m, 147ft	Max. 50m, 164ft	Max. 80m, 262ft
	Indoor unit-Outdoor unit	3 o AWG15(polar)	3 o AWG13(polar)	3 o AWG13(polar) and S3 separated

w The max. cable length may vary depending on the condition of installation, humidity or materials, etc.

	Indoor/Outdoor separate	Wire No. o Size
	power supply
		Max. 120m, 393ft
	Indoor unit-Outdoor unit	2 o Min. AWG22

w The optional indoor power supply terminal kit is necessary.

Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections). Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the intermediate connection point.

22

8-4. M-NET WIRING METHOD

(Points to notice)

(1)Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from making an influence on the signal communication. Place them at intervals of more than 5cm. Do not put them in the same conduit tube.

(2)Terminal block (TB7) for transmission wires should never be connected to 208/230V power supply. If it is connected, electronic parts on M-NET P.C. board may be burnt out.

(3)Use 2-core x 1.25mm2 [AWG16] shield wire (CVVS, CPEVS) for the transmission wire. Transmission signals may not be sent or received normally if different types of transmission wires are put together in the same multi-conductor cable. Never do this because this may cause a malfunction.

Group		Refrigerant	Refrigerant	Refrigerant
		address 00	address 00	address 00
remote
controller		M-NET	M-NET	M-NET
	Power	address 01	address 02	address 03
	supply
	unit for
	transmission
	wire

A-control	A-control	A-control
remote	remote	remote
controller	controller	controller

It would be ok if M-NET wire (non-polar, 2-cores) is arranged in addition to the wiring for A-control.

(4)Ground only one of any appliances through M-NET transmission wire (shield wire). Communication error may occur due to the influence of electromagnetic noise.

“Ed” error will appear on the LED display of outdoor unit. “0403” error will appear on the central-control remote controller.

Bad example (Multi spot grounding of shield wire)

Central		Power		M-NET type		M-NET type		M-NET type
remote		supply
				outdoor unit		outdoor unit		outdoor unit
controller		appliance

M-NET transmission wire

	Good example 1 (Single spot grounding of shield wire)
	Central	Power	M-NET type	M-NET type	M-NET type
	remote	supply
			outdoor unit	outdoor unit	outdoor unit
	controller	appliance
	M-NET transmission wire

	Good example 2 (Single spot grounding of shield wire)
	Central	Power	M-NET type	M-NET type	M-NET type
	remote	supply
			outdoor unit	outdoor unit	outdoor unit
	controller	appliance
	M-NET transmission wire

If there are more than 2 grounding spots on the shield wire, noise may enter into the shield wire because the ground wire and shield wire form one circuit and the electric potential difference occurs due to the impedance difference among grounding spots. In case of single spot grounding, noise does not enter into the shield wire because the ground wire and shield wire do not form one circuit.

To avoid communication errors caused by noise, make sure to observe the single spot grounding method described in the installation manual.

23

	● M-NET wiring
	(1)	Use 2-core x 1.25mm2 [AWG16] shield wire for electric wires.	M-NET
		(Excluding the case connecting to system controller.)	terminal		Ground
			block
	(2)	Connect the wire to the M-NET terminal block. Connect one core of the			wire
		transmission wire (non-polar) to A terminal and the other to B. Peel the
			A B		S
		shield wire, twist the shield part to a string and connect it to S terminal.
			Transmission		Shield
	(3)	In the system which several outdoor units are being connected, the terminal
			wire		part

(A, B, S) on M-NET terminal block should be individually wired to the other

outdoor unit’s terminal, i.e. A to A, B to B and S to S. In this case, choose one of those outdoor units and drive a screw to fix an ground wire on the plate as shown on the right figure.

8-4-1. M-NET address setting

In A-control models, M-NET address and refrigerant address should be set only for the outdoor unit. Similar to CITY MULTI series, there is no need to set the address of outdoor unit and remote controller. To construct a central control system, the setting of M-NET address should be conducted only upon the outdoor unit. The setting range should be 1 to 50 (the same as that of the indoor unit in CITY MULTI system), and the address number should be consecutively set in a same group.

Address number can be set by using rotary switches (SW11 for ones digit and SW12 for tens digit), which is located on the M-NET board of outdoor unit.

(Initial setting: all addresses are set to “0”.)

8-4-2. Refrigerant address setting

<Setting example> M-NET Address No.

SW11

ones

Switching digit setting SW12

tens digit

1

2	34
01	5
9	7	6
8
2	34
01	5
9	7	6
8

2			50
2	34		2	34
01	5		01	5
9	7	6	9	7	6
8			8
	34		~	34
2			2
01	5		01	5
9	7	6	9	7	6
8			8

In case of multiple grouping system (multiple refrigerant circuits in one group), indoor units should be connected by remote controller wiring (TB5) and the refrigerant address needs to be set. Leave the refrigerant addresses to “00” if the group setting is not conducted. Set the refrigerant address by using DIP SW1-3 to -6 on the outdoor controller board. [Initial setting: all switches are OFF. (All refrigerant addresses are “00”.)]

			ON								ON								ON								ON								ON								ON								ON								ON
			OFF								OFF								OFF								OFF								OFF								OFF								OFF								OFF
Refrigerant				1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6
						0								1								2								3								4								5								6								7
address
			ON								ON								ON								ON								ON								ON								ON								ON
			OFF								OFF								OFF								OFF								OFF								OFF								OFF								OFF
				1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6			1	2	3	4	5	6
						8								9								10								11								12								13								14								15

8-4-3. Regulations in address settings

In case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above section. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address.

		Group A	Group B		Group C
System		Refrigerant	Refrigerant	Refrigerant	Refrigerant
		address 00	address 00	address 01	address 00
controller
		M-NET	M-NET	M-NET	M-NET
	Power	address 01	address 02	address 03	address 04
	supply
	unit for
	transmission			TB5
	wire
		A-control	A-control		A-control
		remote	remote		remote
		controller	controller		controller

w Refrigerant addresses can be overlapped if they are in the different group.

		Group A			Group B
	System	Refrigerant	Refrigerant	Refrigerant	Refrigerant	Refrigerant
		address 00	address 01	address 00	address 01	address 02
	controller
		M-NET	M-NET	M-NET	M-NET	M-NET
	Power	address 01	address 02	address 04	address 03	address 05
	supply
	unit for
	transmission			TB5
	wire
		A-control		A-control
		remote		remote
		controller		controller

wIn group B, M-NET address of the outdoor unit whose refrigerant address is “00” is not set to the minimum in the group. As “03” is right for this situation, the setting is wrong. Taking group A as a good sample, set the minimum M-NET address in the group for the outdoor unit whose refrigerant address is “00”.

24

9	REFRIGERANT SYSTEM DIAGRAM
PUZ-A18NHA2 PUZ-A18NHA2-BS								Unit : mm(inch)
	Stop valve			High pressure		Service		<4-way valve solenoid coil>
								Heating : ON
	(with service port)			protect switch		port(check)
								Cooling : OFF
		4-way valve			Outdoor heat exchanger
		(#50)
	Refrigerant GAS pipe
		Strainer					Thermistor
	12.7A({1/2)						(TH6)
							Thermistor
							(TH3)
					Muffler
	Accumulator				Thermistor(TH4)		Distributor
	Refrigerant LIQUID pipe		Compressor		(#100)	(#100)
					Strainer	Strainer
	6.35A({1/4)
		Stop valve
					Linear expansion valve
			Refrigerant flow in cooling
			Refrigerant flow in heating
PUZ-A24/30/36NHA2		PUZ-A24/30/36NHA2-BS
			Bypass valve	Service High pressure
				port	protect switch
	Ball valve 4-way valve			(check)		Outdoor heat exchanger
	Refrigerant GAS pipe	(#50)					Thermistor
		Strainer
							(TH6)
	15.88A({5/8)
		Service					Thermistor
							(TH3)
		port	Muffler	Thermistor
		(check)
				(TH4)			Distributor
	Accumulator
	Refrigerant LIQUID pipe		Compressor		(#100)	(#100)
					Strainer	Strainer
	9.52A({3/8)	Stop valve			Linear expansion valve
		(with service port)
			Refrigerant flow in cooling
			Refrigerant flow in heating
PUZ-A42NHA2 PUZ-A42NHA2-BS
					Service
					port
		Low pressure protect			(check)
		switch			High pressure protect switch
	Ball valve		4-way
		(#50)	valve			Outdoor heat exchanger
							Thermistor
	Refrigerant GAS pipe	Strainer
							(TH6)
	15.88A({5/8)	Service					Thermistor
		port			Muffler		(TH3)
		(check)
	Strainer				Thermistor		Distributor
	(#100)				(TH4)
		Accumulator
			Compressor
	Refrigerant LIQUID pipe
	9.52A({3/8)		Strainer		Strainer
			(#100)		(#100)
	Stop valve		Linear expansion valve
				Refrigerant flow in cooling
	(with service port)
				Refrigerant flow in heating

25

	PUY-A12/18NHA2 PUY-A12/18NHA2-BS					Unit : mm(inch)
	Stop valve		High pressure	Service port
				(Check)
	(with service port)
			protect switch	Outdoor heat exchanger
		(#50)
						Thermistor
	Refrigerant GAS pipe	Strainer
						(TH6)
	12.7A({1/2)					Thermistor
						(TH3)
		Accumulator		Thermistor (TH4)		Distributor
			Compressor	(#100)	(#100)
	Refrigerant LIQUID pipe			Strainer	Strainer
	6.35A({1/4)	Stop valve		Linear expansion valve
			Refrigerant flow in cooling
	PUY-A24/30/36NHA2 PUY-A24/30/36NHA2-BS
		Ball valve	Bypass valve	Service	Outdoor heat exchanger
				port
		(#50)
				(check)		Thermistor
	Refrigerant GAS pipe	Strainer
						(TH6)
	15.88A({5/8)			High pressure		Thermistor
		Service		protect switch		(TH3)
		port		Thermistor
		(check)
				(TH4)		Distributor
		Accumulator
			Compressor (#100)		(#100)
	Refrigerant LIQUID pipe			Strainer	Strainer
	9.52A({3/8)	Stop valve		Linear expansion valve

(with service port)

Refrigerant flow in cooling

PUY-A42NHA2 PUY-A42NHA2-BS

	Ball valve	Low pressure protect
		switch	Service	Outdoor heat exchanger
	(#50)		port
		Strainer		Thermistor
			(check)
	Strainer	(#100)
				(TH6)
	Refrigerant GAS pipe
	15.88A({5/8)		High pressure	Thermistor
	Service
			protect switch	(TH3)
	port
	(check)		Thermistor
	Accumulator			Distributor
			(TH4)
		Compressor
	Refrigerant LIQUID pipe
	9.52A({3/8)	Strainer	Strainer
		(#100)	(#100)
	Stop valve

(with service port)	Linear expansion valve
	Refrigerant flow in cooling

26

1. Refrigerant recovering (pump down)

Perform the following procedures to recover the refrigerant when moving the indoor unit or the outdoor unit. 1Turn on the power supply (circuit breaker).

wWhen power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If“CENTRALLY CONTROLLED” is displayed, the refrigerant collecting (pump down) cannot be completed normally.

2After the liquid stop valve is closed, set the SWP switch on the control board of the outdoor unit to ON. The compressor (outdoor unit) and ventilators (indoor and outdoor units) start operating and refrigerant recovering operation begins. LED1 and LED2 on the control board of the outdoor unit are lit.

wSet the SWP switch (push-button type) to ON in order to perform refrigerant recovering operation only when the unit is stopped. However, refrigerant recovering operation cannot be performed until compressor stops even if the unit is stopped. Wait 3 minutes until compressor stops and set the SWP switch to ON again.

3Because the unit automatically stops in about 2 to 3 minutes after the refrigerant recovering operation (LED1 is not lit and LED2 is lit), be sure to quickly close the gas stop valve.

wIn case the outdoor unit is stopped when LED1 is lit and LED2 is not lit, open the liquid stop valve completely, and then repeat step 2 3 minutes later.

wIf the refrigerant recovering operation has been completed normally (LED1 is not lit and LED2 is lit), the unit will remain stopped until the power supply is turned off.

4Turn off the power supply (circuit breaker.)

2. Start and finish of test run

•Operation from the indoor unit

Execute the test run using the installation manual for the indoor unit.

•Operation from the outdoor unit

By using the DIP switch SW4 on the control board of outdoor unit, test run can be started and finished, and its operation mode (cooling/heating) can be set up.

1Set the operation mode (cooling/heating) using SW4-2.

2Turn on SW4-1 to start test run with the operation mode set by SW4-2. 3Turn off SW4-1 to finish the test run.

•There may be a faint knocking sound around the machine room after power is supplied, but this is no problem with product because the linear expansion valve is just moving to adjust opening pulse.

•There may be a knocking sound around the machine room for several seconds after compressor starts operating. But this is not a problem with product because the check valve itself generates the sound because pressure difference is small in the refrigerant circuit.

<SW4>

C D

ON
OFF
1	2
A B
A Stop	C operation
B Cooling	D Heating

(PUZ only)

Note:

The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1, change the operation mode and restart the test run by SW4-1.)

27

10 TROUBLESHOOTING

10-1. TROUBLESHOOTING

<Error code display by self-diagnosis and actions to be taken for service (summary)>

Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring at service, are summarized in the table below. Check the contents below before investigating details.

Unit conditions at service	Error code	Actions to be taken for service (summary)
	Displayed	Judge what is wrong and take a corrective action according
		to “10-4. Self-diagnosis action table”.
The trouble is reoccurring.
		Conduct trouble shooting and ascertain the cause of the
	Not displayed	trouble according to “10-5. Troubleshooting by inferior
		phenomena”.
		1Consider the temporary defects such as the work of
		protection devices in the refrigerant circuit including
		compressor, poor connection of wiring, noise and etc.
		Re-check the symptom, and check the installation
		environment, refrigerant amount, weather when the
	Logged	trouble occurred, matters related to wiring and etc.
		2Reset error code logs and restart the unit after finishing
		service.
		3There is no abnormality concerning of parts such as
		electrical component, controller board, remote controller
		and etc.
The trouble is not reoccurring.
		1Re-check the abnormal symptom.
		2Conduct trouble shooting and ascertain the cause of the
		trouble according to “10-5. Troubleshootingby inferior
	Not logged	phenomena”.
		3Continue to operate unit for the time being if the cause
		is not ascertained.
		4There is no abnormality concerning of parts such as
		electrical component, controller board, remote controller
		and etc.

10-2. CHECK POINT UNDER TEST RUN

(1) Before test run

•After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant leakage, loosened connections and incorrect polarity.

•Measure impedance between the ground and the power supply terminal block (L1, L2) on the outdoor unit by 500V Megger

and check that it is 1.0M" or over.

wDon’t use 500V Megger to indoor/outdoor connecting wire terminal block (S1, S2, S3) and remote controller terminal block (1, 2). This may cause malfunction.

•Make sure that test run switch (SW4) is set to OFF before turning on power supply.

•Turn on power supply 12 hours before test run in order to protect compressor.

•For specific models which requires higher ceiling settings or auto-recovery feature from power failure, make proper changes

of settings referring to the description of “12. FUNCTION SETTING”.

Make sure to read operation manual before test run. (Especially items to secure safety.)

28

"TEST RUN" and the currently selected operation mode are displayed altemately.

Displays the remaining test run time.

59 °F

B

C

A [TEST] button

Pipe (liquid) temperature

	Operating procedures		While the room temperature display on the remote
			controller is “PLEASE WAIT”, the remote controller is disabled.
	1.	Turn on the main power supply.	Wait until “PLEASE WAIT” disappears before using remote controller.
			“PLEASE WAIT” appears for about 2 minutes after power
			supply is turned on. w1
	2.	Press A TEST button twice.	The		appears on the screen.
				TEST RUN
	3. Press B OPERATION SWITCH		Cooling mode: Check if cool air blows and water is drained.
			Heating mode: Check if warm air blows. (It takes a little
		button.
				while until warm air blows.)
	4.	PressC AIR DIRECTION button.	Check for correct motion of auto-vanes.
	5.	Check the outdoor unit fan for	The outdoor unit features automatic capacity control to

	correct running.	provide optimum fan speeds. Therefore, the fan keeps
		running at a low speed to meet the current outside air
		condition unless it exceeds its available maximum power.
		Then, in actuality, the fan may stop or run in the reverse
		direction depending on the outside air, but this does not
		mean malfunction.

6.Press the ON/OFF button to reset the test run in progress.

7.Register the contact number.

•In case of test run, the OFF timer will be activated, and the test run will automatically stop after 2 hours.

•The room temperature display section shows the pipe temperature of indoor units during the test run.

•Check that all the indoor units are running properly in case of simultaneous twin operation. Malfunctions may not be displayed regardless of incorrect wiring.

w1 After turning on the power supply, the system will go into startup mode, “PLEASE WAIT” will blink on the display section of the room temperature, and lamp(green) of the remote controller will blink.

As to INDOOR BOARD LED, LED1 will be lit up, LED2 will either be lit up in case the address is 0 or turned off in case the address is not 0. LED3 will blink.

As to OUTDOOR BOARD LED, LED1(green) and LED2(red) will be lit up. (After the startup mode of the system finishes,

LED2(red) will be turned off.)
In case OUTDOOR BOARD LED is digital display, — and —	will be displayed alternately every second.

•If one of the above operations doesn’t function correctly, the causes written below should be considered. Find causes from the symptoms.

The below symptoms are under test run mode. “startup” in the table means the display status of w1 written above.

	Symptoms in test run mode		Cause
	Remote Controller Display	OUTDOOR BOARD LED Display
		< > indicates digital display.
	Remote controller displays “PLEASE	After “startup” is displayed, only	• After power is turned on, “PLEASE WAIT” is displayed for 2
	WAIT”, and cannot be operated.	green lights up. <00>	minutes during system startup. (Normal)
		After “startup” is displayed,	• Incorrect connection of outdoor terminal block (L1, L2, and
		green (once) and red (once)
	After power is turned on, “PLEASE WAIT”		S1, S2, S3.)
		blink alternately. <F1>
	is displayed for 3 minutes, then error code
		After “startup” is displayed,
	is displayed.	green (once) and red (twice)	• Outdoor unit’s protection device connector is open.
		blink alternately. <F3, F5, F9>
		After “startup” is displayed,	• Incorrect wiring between the indoor and outdoor unit (Polarity
	No display appears even when remote	green (twice) and red (once)	is wrong for S1, S2, S3.)
		blink alternately. <EA. Eb>	• Remote controller transmission wire is short.
	controller operation switch is turned on.
		After “startup” is displayed, only	• There is no outdoor unit of address 0.
	(Operation lamp does not light up.)
		green lights up. <00>	(Address is other than 0.)
			• Remote controller transmission wire is open.
	Display appears but soon disappears	After “startup” is displayed, only	• After canceling function selection, operation is not possible for
	even when remote controller is operated.	green lights up. <00>	about 30 seconds. (Normal)

w Press the remote controller’s CHECK button twice to perform self-diagnosis. See the table below for the contents of LCD display.

LCD	Contents of inferior phenomena	LCD		Contents of inferior phenomena
P1	Abnormality of room temperature thermistor	U1~UP	Malfunction outdoor unit
P2	Abnormality of pipe temperature thermistor/Liquid	F3~F9	Malfunction outdoor unit
P4	Abnormality of drain sensor/Float switch connector open	E0~E5	Remote controller transmitting error
P5	Drain overflow protection is working.	E6~EF	Indoor/outdoor unit communication error
P6	Freezing/overheating protection is working.	----	No	error history
P8	Abnormality of pipe temperature	FFFF	No applied unit
P9	Abnormality of pipe temperature thermistor/Cond./Eva	PA	Forced compressor stop(due to water leakage abnormality)
Fb	Abnormality of indoor controller board

See the table below for details of the LED display (LED 1, 2, 3) on the indoor controller board.

	LED1 (microcomputer power supply)	Lits when power is supplied.
	LED2 (remote controller)	Lits when power is supplied for wired remote controller.
		The indoor unit should be connected to the outdoor unit with address “0” setting.
	LED3 (indoor/outdoor communication)	Blinks when indoor and outdoor unit are communicating.

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TEST RUN

COOL	TEST
	RUN

ON/OFF TEMP

7

	FAN	AUTO STOP
		5
MODE	VANE	AUTO START
3,4		6
CHECK	LOUVER	h
TEST RUN		min
2
SET	RESET CLOCK

Test run [for wireless remote controller]

Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1.0M".

1 Turn on the main power to the unit.

2Press the TEST RUN button twice continuously.

(Start this operation from the turned off status of remote controller display.)

and current operation mode are displayed.

3 Press the MODE (

) button to activate COOL mode, then

check whether cool air is blown out from the unit.

4Press the MODE ( ) button to activate HEAT mode, then check whether warm air is blown out from the unit.

5 Press the FAN button and check whether strong air is blown out from the unit.

6Press the VANE button and check whether the auto vane operates properly.

7 Press the ON/OFF button to stop the test run.

Note:

•Point the remote controller towards the indoor unit receiver while following steps 2 to 7.

•It is not possible to run in FAN, DRY or AUTO mode.

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