Mitsubishi Electric PUZ-A12NKA7 User manual

1
SERVICE MANUAL
CONTENTS
1. REFERENCE MANUAL ································· 2
2. SAFETY PRECAUTION ································· 2
3. FEATURES····················································· 7
4. SPECIFICATIONS ·········································· 8
5. DATA····························································· 10
6. OUTLINES AND DIMENSIONS ··················· 14
7. WIRING DIAGRAM ······································ 17
8. WIRING SPECIFICATIONS·························· 20
9. REFRIGERANT SYSTEM DIAGRAM ············· 21
10. TROUBLESHOOTING·································· 24
11. EASY MAINTENANCE FUNCTION·············· 84
12. FUNCTION SETTING ··································· 87
13. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ·····95
14. DISASSEMBLY PROCEDURE··················· 104
R410A
Outdoor unit
[Model Name]
PUZ-A12NKA7
PUZ-A18NKA7
PUZ-A24NHA7
PUZ-A30NHA7
PUZ-A36NKA7
PUZ-A42NKA7
PUZ-A12NKA7-BS
PUZ-A18NKA7-BS
PUZ-A24NHA7-BS
PUZ-A30NHA7-BS
PUZ-A36NKA7-BS
PUZ-A42NKA7-BS
PUY-A12NKA7
PUY-A18NKA7
PUY-A24NHA7
PUY-A30NHA7
PUY-A36NKA7
PUY-A42NKA7
PUY-A12NKA7-BS
PUY-A18NKA7-BS
PUY-A24NHA7-BS
PUY-A30NHA7-BS
PUY-A36NKA7-BS
PUY-A42NKA7-BS
[Service Ref.]
PUZ-A12NKA7
PUZ-A18NKA7
PUZ-A24NHA7
PUZ-A30NHA7
PUZ-A36NKA7
PUZ-A42NKA7
PUZ-A12NKA7-BS
PUZ-A18NKA7-BS
PUZ-A24NHA7-BS
PUZ-A30NHA7-BS
PUZ-A36NKA7-BS
PUZ-A42NKA7-BS
PUY-A12NKA7
PUY-A18NKA7
PUY-A24NHA7
PUY-A30NHA7
PUY-A36NKA7
PUY-A42NKA7
PUY-A12NKA7-BS
PUY-A18NKA7-BS
PUY-A24NHA7-BS
PUY-A30NHA7-BS
PUY-A36NKA7-BS
PUY-A42NKA7-BS
PUZ-A12/18NKA7
PUY-A12/18NKA7
PARTS CATALOG (OCB636)
Notes:
•Thismanualdescribesservice
dataoftheoutdoorunitsonly.
• RoHScompliantproductshave
<G> markonthespecname
plate.
SPLIT-TYPE,HEATPUMPAIRCONDITIONERS
SPLIT-TYPE,AIRCONDITIONERS February 2017
No. OCH636
REVISED EDITION-A
Revision:
•
CorrectedtheSHFvaluein
"5-4.STANDARDOPERATION
DATA"inREVISEDEDITION-A.
• Somedescriptionshavebeen
modified.
• OCH636 isvoid.

2
INDOOR UNIT
Modelname ServiceRef. ServicemanualNo.
PLA-A12/18/24/30/36/42EA7 PLA-A12/18/24/30/36/42EA7 OCH640
OCB640
PCA-A24/30/36/42KA7 PCA-A24/30/36/42KA7.TH OCH638
OCB638
PKA-A12/18HA7 PKA-A12/18HA7 OCH637
OCB637
PKA-A24/30/36KA7 PKA-A24/30/36KA7.TH OCH639
OCB639
PEAD-A12/18/24/30/36/42AA7 PEAD-A12/18/24/30/36/42AA7 ―
PVA-A12/18/24/30/36/42AA7 PVA-A12/18/24/30/36/42AA7 ―
2SAFETY PRECAUTION
Before obtaining access to terminal, all supply circuits must be disconnected.
Preparation before the repair service.
• Prepare the proper tools.
• Prepare the proper protectors.
• Provide adequate ventilation.
• After stopping the operation of the air conditioner, turn off the power-supply breaker.
• Discharge the condenser before the work involving the electric parts.
Precautions during the repair service.
• Do not perform the work involving the electric parts with wet hands.
• Do not pour water into the electric parts.
• Do not touch the refrigerant.
• Do not touch the hot or cold areas in the refrigerating cycle.
• When the repair or the inspection of the circuit needs to be done without turning off the power,
exercise great caution not to touch the live parts.
2-1. ALWAYS OBSERVE FOR SAFETY
1REFERENCE MANUAL
OCH636A

3
Cautions for units utilizing refrigerant R410A
2-2. 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 contaminants
such as sulfur, oxides, dirt, shaving particles, etc,
which are hazard to refrigerant cycle.
In addition, use pipes with specified thickness.
Store the piping to be used indoors during
installation and both ends of the piping sealed
until just before brazing. (Leave elbow joints, etc.
in their packaging.)
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
In case of using the existing pipes for R22, be careful with
the following:
· 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.
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.
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.
Handle 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
Use the specified refrigerant only.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
OCH636A

4
Unit
Electronic weighing scale
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
[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) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them.
[2] Additional refrigerant charge
When charging directly from cylinder
(1)CheckthatcylinderforR410Aonthemarketisasyphontype.
(2)Chargingshouldbeperformedwiththecylinderofsyphonstoodvertically.(Refrigerantischargedfromliquidphase.)
No. Toolname Specifications
1Gaugemanifold ·OnlyforR410A
·Usetheexistingfittingspecifications.
·Usehigh-tensionsidepressureof768.7PSIG[5.3MPa.G]orover.
2Chargehose ·OnlyforR410A
·Usepressureperformanceof738.2PSIG[5.09MPa.G]orover.
3Electronicweighing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 —
Although"-BS"modelhasbeendesignedtoberesistanttosaltdamage,observethefollowingprecautionstomaintainthe
performanceoftheunit.
(1)Avoidinstallingtheunitinalocationwhereitwillbeexposeddirectlytoseawaterorseabreeze.
(2)Ifthecoverpanelmaybecomecoveredwithsalt,besuretoinstalltheunitinalocationwherethesaltwillbewashedaway
byrainwater.(Ifasunshadeisinstalled,rainwatermaynotcleanthepanel.)
(3)Toensurethatwaterdoesnotcollectinthebaseoftheoutdoorunit,makesurethatthebaseislevel,notatangle.Water
collectinginthebaseoftheoutdoorunitcouldcauserust.
(4)Iftheunitisinstalledinacoastalarea,cleantheunitwithwaterregularlytoremoveanysaltbuild-up.
(5)Iftheunitisdamagedduringinstallationormaintenance,besuretorepairit.
(6)Besuretochecktheconditionoftheunitregularly.
(7)Besuretoinstalltheunitinalocationwithgooddrainage.
2-3. PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL
OCH636A

5
2-4. 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timeshigherthanthatofR22,theirsizesofflaredsectionsandflarenutsaredifferent.
1Thicknessofpipes
SincetheworkingpressureofR410AishighercomparedtoR22,besuretouserefrigerantpipingwiththickness
shownbelow.(Neverusepipesof7/256inch[0.7mm]orbelow.)
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
1/32 [0.8]
1/32 [0.8]
1/32 [0.8]
5/128 [1.0]
—
1/32 [0.8]
1/32 [0.8]
1/32 [0.8]
5/128 [1.0]
5/128 [1.0]
Nominal
dimensions
(inch)
Diagram below: Piping diameter and thickness
Outside
diameter (mm)
Thickness : inch [mm]
R410A R22
2Dimensions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itsworkingpressureishigherthanthatofotherrefrig-
erants.Therefore,toenhanceairtightnessandstrength,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strengthasshownbelow.Setcopperpipecorrectlyreferringtocopperpipe
flaringdimensionsforR410Abelow.For1/2and5/8inchpipes,thedimensionBchanges.
Usetorquewrenchcorrespondingtoeachdimension.
3Tools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
11/32-23/64 [ 9.1]
1/2-33/64 [13.2]
41/64-21/32 [16.6]
49/64-25/32 [19.7]
—
9.0
13.0
16.2
19.4
23.3
Nominal
dimensions (inch)
Flare cutting dimensions
Outside
diameter (mm)
Dimension A ( )
+0
-0.4
(inch [mm])
R410A R22 (mm)
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
Refrigerant charge
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refri-
gerant to thermistor vacuum gauge)
Refrigerant charge
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Ester oil, ether oil and
alkylbenzene oil(minimum amount)
Tool exclusive for R410A
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
Tools can be used for other refrigerants
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
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
43/64 [17.0]
7/8 [22.0]
1-3/64 [26.0]
1-9/64 [29.0]
17.0
22.0
24.0
27.0
36.0
Nominal
dimensions (inch)
Flare nut dimensions
Outside
diameter (mm)
Dimension B
(inch [mm])
R410A
R22
—
(mm)
DimensionB
OCH636A

6
2-5. LOW AMBIENT COOLING
Precautions for low ambient cooling
• Iftheoutdoortemperatureis23°Forlowerduringcoolingoperation,installanoptionalairguidetopreventwindfrom
blowingintotheoutdoorunit.
• Installtheoutdoorunitinalocationwherewindwillnotblowontothebackoftheunit.
• Topreventdamagetotheparts,besuretoinstalltheunit,turnonthemainpower,andperformserviceinanenvironment
wheretheambienttemperatureis0°Forhigher.
• Inordertoprotectthecompressorandelectricalcomponents,donotturnoffthecircuitbreakeriftheunitisinstalledinan
environmentwheretheambienttemperatureis0°Forlower.
• Itneedsatleast12hrstandbytooperationinordertowarmtheelectricalparts.
Note:Duringcoolingoperationunderlowambienttemperature,thebottomfanmotorofA36,42Nstopsoccasionally.Thisis
anintendedfeature,notamalfunction.
OCH636A

7
3 FEATURES
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.
(Maximum 100 ft [30 m] (A36, 42)/ Maximum 70 ft [21 m] (A12–30))
TherefrigerantcircuitwithLEV(LinearExpansionValve)andaccumulatoralwayscontroltheoptimalrefrigerantlevel
regardlessofthelength(A36,42:100ft[30m]maximum/A12–30:70ft[21m]maximumand16ft[5m]minimum)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-A24NHA7
PUZ-A30NHA7
PUZ-A24NHA7-BS
PUZ-A30NHA7-BS
PUY-A24NHA7
PUY-A30NHA7
PUY-A24NHA7-BS
PUY-A30NHA7-BS
PUZ-A36NKA7
PUZ-A42NKA7
PUZ-A36NKA7-BS
PUZ-A42NKA7-BS
PUY-A36NKA7
PUY-A42NKA7
PUY-A36NKA7-BS
PUY-A42NKA7-BS
PUZ-A12NKA7
PUZ-A18NKA7
PUZ-A12NKA7-BS
PUZ-A18NKA7-BS
PUY-A12NKA7
PUY-A18NKA7
PUY-A12NKA7-BS
PUY-A18NKA7-BS
OCH636A

8
4 SPECIFICATIONS
ServiceRef. PUZ-A12NKA7
PUZ-A12NKA7-BS
PUZ-A18NKA7
PUZ-A18NKA7-BS
PUZ-A24NHA7
PUZ-A24NHA7-BS
PUZ-A30NHA7
PUZ-A30NHA7-BS
PUZ-A36NKA7
PUZ-A36NKA7-BS
PUZ-A42NKA7
PUZ-A42NKA7-BS
Power
supply
Phase Single
Cycle 60Hz
Voltage 208/230V
MCA A11 11 19 19 25 25
MOCP A 28 28 26 26 31 31
Breakersize A15 15 25 25 30 30
Externalnish Munsell3Y7.8/1.1
Heatexchanger Crossn
Defrostmethod Reversecycle
Crankcaseheater kW ―
Compressor Hermetic
Model SNB092FNCM SNB130FBCM2 SNB172FWHM1 SNB172FWHM1 MNB33FBRMC-L MNB33FBRMC-L
Motoroutput kW 0.65 0.9 1.2 1.2 2.5 2.5
R.L.A 777788
L.R.A 12 12 11 11 13 13
Startertype Inverter
Fan Fan(drive)×No. Propellerfan×1 Propellerfan×1 Propellerfan×1 Propellerfan×1 Propellerfan×2 Propellerfan×2
Fanmotoroutput kW 0.046 0.046 0.086 0.086 0.074+0.074 0.074+0.074
Fanmotor F.L.A 0.5 0.5 0.4 0.4 0.50+0.50 0.50+0.50
Airow CFM 1,590 1,590 1,940 1,940 3,880 3,880
K/min 45 45 55 55 110 110
Sound
pressurelevel
Cooling dB 44 44 47 47 52 52
Heating dB 46 46 48 48 53 53
Protectiondevices HPswitch HPswitch HPswitch HPswitch HPswitch HPswitch
Comp.shellthermo Comp.shellthermo Comp.shellthermo Comp.shellthermo Comp.shellthermo Comp.shellthermo
Dimension W inch 31-13/16+2-7/16 31-13/16+2-7/16 37-12/32 37-12/32 41-5/16 41-5/16
D inch 11-3/16 11-3/16 13+1-3/16 13+1-3/16 13+1-3/16 13+1-3/16
Hinch 24-13/16 24-13/16 37-1/8 37-1/8 52-11/16 52-11/16
W mm 809+62 809+62 950 950 1050 1050
D mm 300 300 330+30 330+30 330+30 330+30
Hmm 630 630 943 943 1338 1338
Weight lb 93 100 153 153 214 214
kg 42 45 69 69 97 97
Refrigerant R410A R410A R410A R410A R410A R410A
Charged lb 4+7/16 4+14/16 7+11/16 7+11/16 10+6/16 10+6/16
kg 2.0 2.2 3.5 3.5 4.7 4.7
Control Linearexpansionvalve
Oilcharged Model Ether(FV50S)
oz 12 16 23 23 45 45
L0.35 0.5 0.7 0.7 1.4 1.4
Refrigerant
piping
PipesizeODliquid inch 1/4 1/4 3/8 3/8 3/8 3/8
mm 6.35 6.35 9.52 9.52 9.52 9.52
PipesizeODgas inch 1/2 1/2 5/8 5/8 5/8 5/8
mm 12.7 12.7 15.88 15.88 15.88 15.88
Connectionmethod-Indoor Flared
Connectionmethod-Outdoor Flared
Heightdifference
IU-OU
ft Maximum100
m Maximum30
Pipinglength ft Maximum100 Maximum100 Maximum165 Maximum165 Maximum165 Maximum165
m Maximum30 Maximum30 Maximum50 Maximum50 Maximum50 Maximum50
OCH636A

9
ServiceRef. PUY-A12NKA7
PUY-A12NKA7-BS
PUY-A18NKA7
PUY-A18NKA7-BS
PUY-A24NHA7
PUY-A12NHA7-BS
PUY-A30NHA7
PUY-A30NHA7-BS
PUY-A36NKA7
PUY-A36NKA7-BS
PUY-A42NKA7
PUY-A42NKA7-BS
Power
supply
Phase Single
Cycle 60Hz
Voltage 208/230V
MCA A11 11 19 19 25 25
MOCP A 28 28 26 26 31 31
Breakersize A15 15 25 25 30 30
Externalnish Munsell3Y7.8/1.1
Heatexchanger Crossn
Defrostmethod Reversecycle
Crankcaseheater kW ―
Compressor Hermetic
Model SNB092FNCM SNB130FBCM2 SNB172FWHM1 SNB172FWHM1 MNB33FBRMC-L MNB33FBRMC-L
Motoroutput kW 0.65 0.9 1.2 1.2 2.5 2.5
R.L.A 777788
L.R.A 12 12 11 11 13 13
Startertype Inverter
Fan Fan(drive)×No. Propellerfan×1 Propellerfan×1 Propellerfan×1 Propellerfan×1 Propellerfan×2 Propellerfan×2
Fanmotoroutput kW 0.046 0.046 0.086 0.086 0.074+0.074 0.074+0.074
Fanmotor F.L.A 0.5 0.5 0.4 0.4 0.50+0.50 0.50+0.50
Airow CFM 1,590 1,590 1,940 1,940 3,880 3,880
K/min 45 45 55 55 110 110
Sound
pressurelevel
Cooling dB 44 44 47 47 52 52
Heating dB ― ― ― ― ― ―
Protectiondevices HPswitch HPswitch HPswitch HPswitch HPswitch HPswitch
Comp.shellthermo Comp.shellthermo Comp.shellthermo Comp.shellthermo Comp.shellthermo Comp.shellthermo
Dimension W inch 31-13/16+2-7/16 31-13/16+2-7/16 37-12/32 37-12/32 41-5/16 41-5/16
D inch 11-3/16 11-3/16 13+1-3/16 13+1-3/16 13+1-3/16 13+1-3/16
Hinch 24-13/16 24-13/16 37-1/8 37-1/8 52-11/16 52-11/16
W mm 809+62 809+62 950 950 1050 1050
D mm 300 300 330+30 330+30 330+30 330+30
Hmm 630 630 943 943 1338 1338
Weight lb 92 99 151 151 211 211
kg 41 44 68 68 96 96
Refrigerant R410A R410A R410A R410A R410A R410A
Charged lb 4+7/16 4+14/16 7+11/16 7+11/16 10+6/16 10+6/16
kg 2.0 2.2 3.5 3.5 4.7 4.7
Control Linearexpansionvalve
Oilcharged Model Ether(FV50S)
oz 12 16 23 23 45 45
L0.35 0.5 0.7 0.7 1.4 1.4
Refrigerant
piping
PipesizeODliquid inch 1/4 1/4 3/8 3/8 3/8 3/8
mm 6.35 6.35 9.52 9.52 9.52 9.52
PipesizeODgas inch 1/2 1/2 5/8 5/8 5/8 5/8
mm 12.7 12.7 15.88 15.88 15.88 15.88
Connectionmethod-Indoor Flared
Connectionmethod-Outdoor Flared
Heightdifference
IU-OU
ft Maximum100
m Maximum30
Pipinglength ft Maximum165 Maximum165 Maximum225 Maximum225 Maximum225 Maximum225
m Maximum50 Maximum50 Maximum69 Maximum69 Maximum69 Maximum69
OCH636A

10
5-1. REFILLING REFRIGERANT CHARGE (R410A: oz, kg)
5-2. COMPRESSOR TECHNICAL DATA
5DATA
ServiceRef. Pipinglength(oneway)
Factory
charged
50ft 60ft 70ft 80ft 90ft 100ft 110ft 120ft 130ft 140ft 150ft 160ft 165ft 170ft 180ft 190ft 200ft 210ft 220ft 225ft
15m 18m 21m 24m 27m 30m 33m 37m 40m 43m 46m 49m 50m 52m 55m 58m 61m 64m 67m 69m
PUZ-A12NKA7
PUZ-A12NKA7-BS
71oz 71oz 71oz 73oz 75oz 77oz ― ― ― ― ― ― ― ― ― ― ― ― ― ― 71oz
2.0kg 2.0kg 2.0kg 2.1kg 2.1kg 2.2kg ――――――――――――――2.0kg
PUZ-A18NKA7
PUZ-A18NKA7-BS
78oz 78oz 78oz 80oz 82oz 84oz ― ― ― ― ― ― ― ― ― ― ― ― ― ― 78oz
2.2kg 2.2kg 2.2kg 2.3kg 2.3kg 2.4kg ――――――――――――――2.2kg
PUZ-A24NHA7
PUZ-A24NHA7-BS
123oz 123oz 123oz 130oz 137oz 144oz 151oz 158oz 165oz 172oz 179oz 186oz 190oz ――――――― 123oz
3.5kg 3.5kg 3.5kg 3.7kg 3.9kg 4.1kg 4.3kg 4.5kg 4.7kg 4.9kg 5.1kg 5.3kg 5.4kg ― ― ― ― ― ― ― 3.5kg
PUZ-A30NHA7
PUZ-A30NHA7-BS
123oz 123oz 123oz 130oz 137oz 144oz 151oz 158oz 165oz 172oz 179oz 186oz 190oz ――――――― 123oz
3.5kg 3.5kg 3.5kg 3.7kg 3.9kg 4.1kg 4.3kg 4.5kg 4.7kg 4.9kg 5.1kg 5.3kg 5.4kg ― ― ― ― ― ― ― 3.5kg
PUZ-A36NKA7
PUZ-A36NKA7-BS
166oz 166oz 166oz 166oz 166oz 166oz 173oz 180oz 187oz 194oz 201oz 208oz 211oz ――――――― 166oz
4.7kg 4.7kg 4.7kg 4.7kg 4.7kg 4.7kg 4.9kg 5.1kg 5.3kg 5.5kg 5.7kg 5.9kg 6.0kg ― ― ― ― ― ― ― 4.7kg
PUZ-A42NKA7
PUZ-A42NKA7-BS
166oz 166oz 166oz 166oz 166oz 166oz 173oz 180oz 187oz 194oz 201oz 208oz 211oz ――――――― 166oz
4.7kg 4.7kg 4.7kg 4.7kg 4.7kg 4.7kg 4.9kg 5.1kg 5.3kg 5.5kg 5.7kg 5.9kg 6.0kg ― ― ― ― ― ― ― 4.7kg
PUY-A12NKA7
PUY-A12NKA7-BS
71oz 71oz 71oz 72oz 73oz 74oz 75oz 76oz 77oz 78oz 79oz 80oz 80oz ― ― ― ― ― ― ― 71oz
2.0kg 2.0kg 2.0kg 2.0kg 2.1kg 2.1kg 2.1kg 2.1kg 2.2kg 2.2kg 2.2kg 2.3kg 2.3kg ― ― ― ― ― ― ― 2.0kg
PUY-A18NKA7
PUY-A18NKA7-BS
78oz 78oz 78oz 79oz 80oz 81oz 82oz 83oz 84oz 85oz 86oz 87oz 87oz ― ― ― ― ― ― ― 78oz
2.2kg 2.2kg 2.2kg 2.2kg 2.3kg 2.3kg 2.3kg 2.3kg 2.4kg 2.4kg 2.4kg 2.5kg 2.5kg ― ― ― ― ― ― ― 2.2kg
PUY-A24NHA7
PUY-A24NHA7-BS
123oz 123oz 123oz 126oz 129oz 132oz 135oz 138oz 141oz 144oz 147oz 150oz 152oz 153oz 156oz 159oz 162oz 165oz 168oz 170oz 123oz
3.5kg 3.5kg 3.5kg 3.6kg 3.7kg 3.8kg 3.8kg 3.9kg 4.0kg 4.1kg 4.2kg 4.3kg 4.3kg 4.4kg 4.4kg 4.5kg 4.6kg 4.7kg 4.8kg 4.8kg 3.5kg
PUY-A30NHA7
PUY-A30NHA7-BS
123oz 123oz 123oz 126oz 129oz 132oz 135oz 138oz 141oz 144oz 147oz 150oz 152oz 153oz 156oz 159oz 162oz 165oz 168oz 170oz 123oz
3.5kg 3.5kg 3.5kg 3.6kg 3.7kg 3.8kg 3.8kg 3.9kg 4.0kg 4.1kg 4.2kg 4.3kg 4.3kg 4.4kg 4.4kg 4.5kg 4.6kg 4.7kg 4.8kg 4.8kg 3.5kg
PUY-A36NKA7
PUY-A36NKA7-BS
166oz 166oz 166oz 166oz 166oz 166oz 169oz 172oz 175oz 178oz 181oz 184oz 185oz 187oz 190oz 193oz 196oz 199oz 202oz 203oz 166oz
4.7kg 4.7kg 4.7kg 4.7kg 4.7kg 4.7kg 4.8kg 4.9kg 5.0kg 5.0kg 5.1kg 5.2kg 5.3kg 5.3kg 5.4kg 5.5kg 5.6kg 5.6kg 5.7kg 5.8kg 4.7kg
PUY-A42NKA7
PUY-A42NKA7-BS
166oz 166oz 166oz 166oz 166oz 166oz 169oz 172oz 175oz 178oz 181oz 184oz 185oz 187oz 190oz 193oz 196oz 199oz 202oz 203oz 166oz
4.7kg 4.7kg 4.7kg 4.7kg 4.7kg 4.7kg 4.8kg 4.9kg 5.0kg 5.0kg 5.1kg 5.2kg 5.3kg 5.3kg 5.4kg 5.5kg 5.6kg 5.6kg 5.7kg 5.8kg 4.7kg
Forpipeslongerthan70or100ft,additionalchargeisrequired.
ServiceRef. PUZ-A12NKA7 PUZ-A18NKA7 PUZ-A24/30NHA7 PUZ-A36/42NKA7
PUZ-A12NKA7-BS PUZ-A18NKA7-BS PUZ-A24/30NHA7-BS PUZ-A36/42NKA7-BS
PUY-A12NKA7 PUY-A18NKA7 PUY-A24/30NHA7 PUY-A36/42NKA7
PUY-A12NKA7-BS PUY-A18NKA7-BS PUY-A24/30NHA7-BS PUY-A36/42NKA7-BS
Compressormodel SNB092FNCM SNB130FBCM2 SNB172FWHM1 MNB33FBRMC-L
Winding
resistance
(")
U-V 0.64 0.64 1.34 0.88
U-W 0.64 0.64 1.34 0.88
W-V 0.64 0.64 1.34 0.88
(at68_F[20:])
OCH636A

11
5-3. NOISE CRITERION CURVES
5ft
3.3ft
MICROPHONE
UNIT
GROUND
90
80
70
60
50
40
30
20
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
PUZ-A36/42NKA7(-BS)
PUY-A36/42NKA7(-BS)
COOLING
MODE
HEATING
52
SPL(dB)
53
LINE
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
PUZ-A12/18NKA7(-BS)
PUY-A12/18NKA7(-BS)
COOLING
MODE
HEATING
46
SPL(dB)
47
LINE
90
80
70
60
50
40
30
20
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
PUZ-A24/30NHA7(-BS)
PUY-A24/30NHA7(-BS)
COOLING
MODE
HEATING
47
SPL(dB)
48
LINE
OCH636A

12
5-4. STANDARD OPERATION DATA
Representativematching PVA-A12AA7 PVA-A18AA7 PVA-A24AA7 PVA-A30AA7 PVA-A36AA7 PVA-A42AA7
Mode COOLING HEATING COOLING HEATING COOLING HEATING COOLING HEATING COOLING HEATING COOLING HEATING
Total Capacity BTU/h 12,000 14,000 18,000 19,000 24,000 26,000 30,000 32,000 36,000 38,000 42,000 46,000
Input W 890 1,070 1,570 1,470 1,960 1,920 3,000 2,640 3,250 3,030 4,150 3,900
Electricalcircuit
Indoorunitmodel PVA-A12AA7 PVA-A18AA7 PVA-A24AA7 PVA-A30AA7 PVA-A36AA7 PVA-A42AA7
Phase Single Single Single Single Single Single
Cycle 60Hz 60Hz 60Hz 60Hz 60Hz 60Hz
Voltage 208/230V 208/230V 208/230V 208/230V 208/230V 208/230V
Current 0.80A 0.80A 1.60A 1.60A 3.30A 3.30A 3.30A 3.30A 4.40A 4.40A 4.50A 4.50A
Outdoorunitmodel PUZ-A12NKA7 PUZ-A18NKA7 PUZ-A24NHA7 PUZ-A30NHA7 PUZ-A36NKA7 PUZ-A42NKA7
Phase Single Single Single Single Single Single
Cycle 60Hz 60Hz 60Hz 60Hz 60Hz 60Hz
Voltage 208/230V 208/230V 208/230V 208/230V 208/230V 208/230V
Current 3.39A 4.10A 5.45A 5.01A 5.49A 5.30A 10.01A 8.40A 10.05A 9.00A 13.95A 12.90A
Electricalcircuit
Dischargepressure PSIG 380 336 397 337 388 341 418 371 379 344 394 367
Suctionpressure PSIG 157 105 143 100 145 98 128 95 136 104 127 99
Dischargetemperature
_F 142 155 151 159 155 171 176 182 144 145 167 148
Condensingtemperature
_F111 102 114 102 114 104 120 113 111 104 114 108
Suctiontemperature _F 49 36 51 42 58 50 57 48 50 38 57 33
Ref.pipelength ft 25 25 25 25 25 25 25 25 25 25 25 25
Dischargepressure MPa 2.62 2.32 2.73 2.32 2.67 2.35 2.88 2.56 2.62 2.37 2.72 2.53
Suctionpressure MPa 1.08 0.72 0.99 0.69 1.00 0.68 0.88 0.65 0.94 0.72 0.88 0.69
Dischargetemperature
:61.1 68.2 65.9 70.5 68.5 77.1 80.2 83.6 62.1 63.0 75.0 64.5
Condensingtemperature
:43.9 38.9 45.7 38.9 45.7 40.2 48.8 45.0 44.1 40.0 45.7 42.4
Suctiontemperature :9.6 2.4 10.4 5.4 14.3 10.2 13.9 8.9 9.8 3.1 13.9 0.5
Ref.pipelength m 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6
Indoor
side
IntakeairtemperatureDB
_F 80 70 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 67 60
DischargeairtemperatureDB
_F 61 96 60 96 58 100 56 107 58 101 57 103
Outdoor
side
IntakeairtemperatureDB
_F 95 47 95 47 95 47 95 47 95 47 95 47
IntakeairtemperatureWB
_F 75 43 75 43 75 43 75 43 75 43 75 43
Indoor
side
IntakeairtemperatureDB
:26.7 21.1 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 19.4 15.6
DischargeairtemperatureDB
:16.1 35.6 15.7 35.6 14.5 37.5 13.2 41.5 14.2 38.1 14.0 39.6
Outdoor
side
IntakeairtemperatureDB
:35.0 8.3 35.0 8.3 35.0 8.3 35.0 8.3 35.0 8.3 35.0 8.3
IntakeairtemperatureWB
:23.9 6.1 23.9 6.1 23.9 6.1 23.9 6.1 23.9 6.1 23.9 6.1
SHF 0.77 ― 0.76 ― 0.83 ― 0.74 ― 0.77 ― 0.81 ―
BF 0.11 ― 0.12 ― 0.07 ― 0.07 ― 0.08 ― 0.08 ―
5-4-1. Heat pump
OCH636A

13
5-4-2. Cooling only
Representativematching PVA-A12AA7 PVA-A18AA7 PVA-A24AA7 PVA-A30AA7 PVA-A36AA7 PVA-A42AA7
Mode COOLING COOLING COOLING COOLING COOLING COOLING
Total Capacity BTU/h 12,000 18,000 24,000 30,000 36,000 42,000
Input W 890 1,570 1,960 3,000 3,250 4,150
Electricalcircuit
Indoorunitmodel PVA-A12AA7 PVA-A18AA7 PVA-A24AA7 PVA-A30AA7 PVA-A36AA7 PVA-A42AA7
Phase Single Single Single Single Single Single
Cycle 60Hz 60Hz 60Hz 60Hz 60Hz 60Hz
Voltage 208/230V 208/230V 208/230V 208/230V 208/230V 208/230V
Current 0.80A 1.60A 3.30A 3.30A 4.40A 4.50A
Outdoorunitmodel PUY-A12NKA7 PUY-A18NKA7 PUY-A24NHA7 PUY-A30NHA7 PUY-A36NKA7 PUY-A42NKA7
Phase Single Single Single Single Single Single
Cycle 60Hz 60Hz 60Hz 60Hz 60Hz 60Hz
Voltage 208/230V 208/230V 208/230V 208/230V 208/230V 208/230V
Current 3.39A 5.45A 5.49A 10.01A 10.05A 13.95A
Electricalcircuit
Dischargepressure PSIG 380 397 388 418 379 394
Suctionpressure PSIG 157 143 145 128 136 127
Dischargetemperature
_F 142 151 155 176 144 167
Condensingtemperature
_F111 114 114 120 111 114
Suctiontemperature _F 49 51 58 57 50 57
Ref.pipelength ft 25 25 25 25 25 25
Dischargepressure MPa 2.62 2.73 2.67 2.88 2.62 2.72
Suctionpressure MPa 1.08 0.99 1.00 0.88 0.94 0.88
Dischargetemperature
:61.1 65.9 68.5 80.2 62.1 75.0
Condensingtemperature
:43.9 45.7 45.7 48.8 44.1 45.7
Suctiontemperature :9.6 10.4 14.3 13.9 9.8 13.9
Ref.pipelength m 7.6 7.6 7.6 7.6 7.6 7.6
Indoor
side
IntakeairtemperatureDB
_F 80 80 80 80 80 80
IntakeairtemperatureWB
_F 67 67 67 67 67 67
DischargeairtemperatureDB
_F 61 60 58 56 58 57
Outdoor
side
IntakeairtemperatureDB
_F 95 95 95 95 95 95
IntakeairtemperatureWB
_F 75 75 75 75 75 75
Indoor
side
IntakeairtemperatureDB
:26.7 26.7 26.7 26.7 26.7 26.7
IntakeairtemperatureWB
:19.4 19.4 19.4 19.4 19.4 19.4
DischargeairtemperatureDB
:16.1 15.7 14.5 13.2 14.2 14.0
Outdoor
side
IntakeairtemperatureDB
:35.0 35.0 35.0 35.0 35.0 35.0
IntakeairtemperatureWB
:23.9 23.9 23.9 23.9 23.9 23.9
SHF 0.77 0.76 0.83 0.74 0.77 0.81
BF 0.11 0.12 0.07 0.07 0.08 0.08
OCH636A

14
PUZ-A12NKA7 PUZ-A18NKA7 PUY-A12NKA7 PUY-A18NKA7
PUZ-A12NKA7-BS PUZ-A18NKA7-BS PUY-A12NKA7-BS PUY-A18NKA7-BS
6OUTLINES AND DIMENSIONS
1/2 conduit hole
144<5-21/32>
2-{22.2<7/8>
22<7/8>
38<1-1/2>241<9-1/2>
Min.100mm<3-15/16>
Piping and wiring connection can
be made from the rear direction only.
*1 In the place where short cycle tends to occur, cooling and heating capacity and power consumption might get lowered 10%.
Air outlet guide (optional PAC-SG58SG-E) will help them improve.
*2 If air discharges to the wall, the surface might get stained.
2 sides should be open in
the right, left and rear side.
Min.100mm<3-15/16> as long as
no obstacle is placed on the
rear and light-and-left sides
of the unit
*1
*2 *1
Air intake
Air discharge
4-oval hole
Air intake
Service panel
Connection for liquid pipe
Service panel for charge plug
Service port
Connection for gas pipe
Min.100mm<3-15/16>
Min.500mm<19-11/16>
Min.350mm<13-25/32>
Basically
open
Max.
<Foundation bolt height>
FOUNDATION
Please secure the unit firmly
with 4 foundation M10<W3/8> bolts.
(Bolts, washers and nut must
be purchased locally.)
18mm<23/32>
{33<1-5/16> drain hole
43.6<1-23/32>
152<6>
155
400<15-25/32>
347.5<13-11/16>
45.4<1-25/32>
365<14-3/8>
330<13>
300<11-13/16>
40<1-9/16>
Handle
600<23-5/8>
10<3/8>
300<11-13/16>
150<5-29/32>
287.5<11-11/32>
500<19-11/16>
800<31-1/2>
69<2-23/32>
183<7-7/32>
90<3-17/32>
155<6-3/32>
23<29/32>
32.5<1-9/32>
18<23/32>
FLARE {12.7<1/2>
FLARE {6.35<1/4>
Installation bolt pitch
PIPING-WIRING DIRECTION
Minimum installation space for outdoor unit
Free space around the outdoor unit
(basic example)
FOUNDATION BOLTS
Unit: mm<in>
Air discharge
Air intake
Air intake
oval hole
2-10×21
drain hole
ø 42 2-U Shaped notched holes
(Foundation Bolt M10<W 3/8>)
(Foundation Bolt M10
<W 3/8>)
330<13>
300<11-13/16>
40 <1-19/32>
404.5<15-15/16>
48<1-29/32>
360<14-3/16>
32.5<1-9/32>
500<19-11/16>
Min.500mm
<19-11/16> Min.100mm
<3-15/16>
Service port
FLARE 12.7 (1/2F)
Connection for
gas pipe
FLARE ø
ø
6.35 (1/4F)
Connection for
liquid pipe
Service panel
for charge plug
Service panel
Earth terminal
Terminal connection
Left ... Power supply wiring
Right ... Indoor/Outdoor wiring
23.2<15/16>
99.5<3-15/16>
164.5<6-1/2>
492<19-3/8>
185.5 <7-5/16>
43 °
35 °
2- ø22.2<7/8>
1/2 conduit hole
Installation bolt pitch
Handle for moving
22 <7/8>
320<12-5/8>
809 <31-7/8> 62 <2-15/32>
154.5 <6-3/32>
310 <12-7/32>
8.5<11/32>
22.3 <29/32>
630 <24-13/16>
Min.100mm
<3-15/16>
Basically open
Min.350mm
<13-25/32>
Max.
<Foundation bolt height>
18 mm<23/32>
Free space around the outdoor unit
(basic example)
100mm<3-15/16> or more as long as
no obstacle is placed on the
rear and right-and-left sides
of the unit
2 sides should be open in
the right, left and rear side.
Please secure the unit firmly
with 4 foundation (M10<W3/8>) bolts.
(Bolts, washers and nut must
be purchased locally).
FOUNDATION BOLTS
Piping and wiring connection can
be made from the rear direction only.
PIPING-WIRING DIRECTION
FOUNDATION
OCH636A

15
Unit: mm<in>
PUZ-A24NHA7 PUZ-A30NHA7 PUY-A24NHA7 PUY-A30NHA7
PUZ-A24NHA7-BS PUZ-A30NHA7-BS PUY-A24NHA7-BS PUY-A30NHA7-BS
Drain hole
(5- ø33<1-5/16>)
Bottom piping hole (knockout)
145
<5-23/32>
145
<5-23/32>
145
<5-23/32>
220
<8-21/32>
30 <1-3/16>
81<3-3/16> 219 <8-5/8>
71<2-13/16>
71
<2-13/16>
Rear piping cover
Front piping cover
2-12×36 oval holes
(Foundation Bolt M10<W3/8>)
Air Discharge
Rear Air Intake
Side Air Intake
2-U Shaped notched holes
(Foundfation Bolt M10<W3/8>)
Installation Feet
330 <13>
175<6-7/8>
57<2-1/4> 41 <1-5/8>
417 <1-1/32>
28<1-3/32> 370<14-9/16>
19<3/4>
25 <31/32>
70 <2-3/4>
175 <6-7/8> 600<23-5/8>
40<19/32>
53<2-3/32>
61<2-13/32>
0
Side Air Intake
Handle
for moving
Air Intake
Rear Air Intake
Handle for moving
Min.100mm
<3-15/16>
Min. 500mm
<19-11/16>
2
1
Handle
for moving
Handle for moving
Service panel
Earth terminal
Left ... Power supply wiring Reight ... Indoor/Outdoor wiring
Terminal Connections
669<26-11/32>
950 <37-13/32>
322<12-11/16>
943 <37-1/8>
473 <18-5/8>
23 <29/32>
*1 447<17-5/8>
*1 431<16-31/32>
Min. 10mm
<3/8>
Min. 10mm
<3/8>
FREE
When installing the conduit,
Set the attachment to the inner side of each panel.
1/2 Conduit attachment
2-ø22.2<7/8>
31<1-7/32>
74<2-19/32>
40<1-9/16>
2
1... Refrigerant GAS pipe connection (FLARE) ø15.88(5/8F)
... Refrigerant LIQUID pipe connection (FLARE) ø 9.52(3/8F)
*1... Indication of STOP VALVE connection location.
Example of Notes
Power supply wiring hole
(2- ø27<1-1/16>knockout)
Rear trunking hole (knockout)
Rear piping hole (knockout)
63 <2-1/2>
73 <2-7/18>
23 <29/32>
55 <2-3/16>
27<1-1/16>
92<3-5/18>
65 <2-9/16>
45<1-25/32> 40<1-9/16>
ø92 <3-5/8>
Power supply wiring hole (2-ø27knockout)
Front trunking hole (knockout)
Front piping hole (knockout)
45<1-25/32>
65<2-9/16>
92<3-5/8>
40<1-9/16>
63<2-1/2>
23 <29/32> 73 <2-7/8>
55<2-3/16>
27<1-1/16>
92
<3-5/8>
Right piping hole (knockout) Right trunking hole
(knockout)
Power supply wiring hole (2- ø27knockout)
19<3/4> 55 <2-3/16>
23 <29/32>
27
<1-1/16> 92 <3-5/8>
92 <3-5/8>
40<1-9/16>75 <2-31/32>
73 <2-7/18> 63 <2-1/2>
92<3-5/8>
Piping knockout Hole Details
Max.
<Foundation bolt height>
30 <1-3/16>
Min.
Min.
Service space
10 <13>
Min.
500 <19-11/16>
500 <19-11/16>
100 <3-15/16>
Min.
Dimensions of space needed
for service access are
shown in the below diagram.
Please secure the unit firmly
with 4 foundation (M10<W3/8>) bolts.
(Bolts and washers must be purchased locally.)
Piping and wiring connections
can be made from 4 directions:
FRONT,Right,Rear and Below.
4 PIPING-WIRING DIRECTIONS
3 FOUNDATION BOLTS2 SERVICE SPACE
1 FREE SPACE (Around the unit)
The diagram below shows a basic example. Explantion of particular details are given in the installation manuals etc.
ø
ø
FOUNDATION
OCH636A

16
Unit: mm<in>
PUZ-A36NKA7 PUZ-A42NKA7 PUY-A36NKA7 PUY-A42NKA7
PUZ-A36NKA7-BS PUZ-A42NKA7-BS PUY-A36NKA7-BS PUY-A42NKA7-BS
Bottom piping hole (Knockout)
Drain hole (5-ø33<1-5/16>)
154
<6-1/16>
136
<5-11/32>
81 <3-3/16>
45 <1-25/32>
110 <14-11/32>
160
<6-5/16>
160
<6-5/16>
160
<6-5/16>
86 <3-3/8>
Rear Air Intake
Handle for moving
Handle for
moving
Side Air Intake
1
2
Handle for moving
Handle for
moving
Service panel
Earth terminal
Terminal connection
Left ... Power supply wiring Right ... Indoor/Outdoor wiring
*1 442 <17-2/5>
1063 <41-7/8>
632 <24-7/8>
*1 450 <17-23/32>
26 <1-1/32>
369 <14-17/32>
1338 <52-11/16>
362 <14-1/4>
1050 <41-11/32>
Air intake
Front piping cover
Rear piping cover
2-12×36 Oval holes
(Foundation Bolt M10<W3/8>)
Installation Feet
2-U Shaped notched holes
(Foundation Bolt M10<W3/8>)
225 <8-27/32>
42 <1-21/32>
60 <2-3/8>
25 <31/32> 330 <13>
225 <8-27/32>
600 <23-5/8>
70 <2-3/4>
417 <16-13/32>
28 <1-3/32> 370 <14-9/16>
19 <3/4>
40<1-9/16>
53 <2-3/32>
56 <2-7/32>
0
Conduit hole
( ø 24<15/16>knockout)
Conduit hole
( ø 37<1-15/32>knockout)
Rear trunking hole (Knockout)
Rear piping hole (Knockout)
75 <2-15/16>
92 <3-5/8>
73 <2-7/8>
60 <2-3/8>
5<3/16>
26 <1-1/32>
27 <1-1/16> 55 <2-3/16>
55 <2-3/16> 60 <2-3/8>
ø 92
<3-5/8>
Conduit hole
( ø 24<15/16>knockout)
Front piping hole (Knockout)
Front trunking hole (Knockout)
Conduit hole
( ø 37<1-15/32>knockout)
26 <1-1/32>
92 <3-5/8>
27 <1-1/16> 55 <2-3/16>
73 <2-7/8>
75 <2-15/16>
55 <2-3/16>60 <2-3/8>
ø 92
<3-5/8>
Right trunking hole (Knockout)
Conduit hole
( ø 37<1-15/32>knockout)
Conduit hole
( ø 24<15/16>knockout)
Right piping hole (Knockout)
73 <2-7/8> 61 <2-3/8>
5<3/16>
29 <1-5/32>
27 <1-1/16>26 <1-1/32>
92
<3-5/8>
53 <2-3/32> 60 <2-3/8>
55 <2-3/16>
92 <3-5/8>
ø 92
<3-5/8>
Min.
Min.
Min. Min.
Service space Min.
150
<5-29/32>
500
<19-11/16>
500
<19-11/16>
15 <3/5>
50
<2>
Max.
30 <1-3/16>
( )
2
1 ... Refrigerant GAS pipe connection (FLARE) ø15.88(5/8F)
... Refrigerant LIQUID pipe connection (FLARE) ø9.52(3/8F)
*1 ... Indication of STOP VALVE connection location.
Piping Knockout Hole Details
Example of Notes
FREE
Min. 15mm
<3/5> Min. 15mm
<3/5> Min. 1000mm
<39-3/8>
Min. 150mm <5-29/32>
Piping and wiring connections
can be made from 4 directions:
FRONT, Right, Rear and Below.
4
PIPING-WIRING DIRECTIONS
3 FOUNDATION BOLTS
2 SERVICE SPACE
1 FREE SPACE (Around the unit)
Please secure the unit firmly
with 4 foundation (M10<W3/8>) bolts.
(Bolts and washers must be purchased locally.)
Dimensions of space needed
for service access are
shown in the below diagram.
The diagram below shows a basic example. Explantion of particular details are given in the installation manuals etc.
<Foundation bolt height>
Air Discharge Rear Air Intake
Side Air Intake
1/2 Conduit
attachment
ø 22.2<7/8>
ø 27.8<1-3/32>
When installing the conduit.
Set the attachment to the inner side of each panel.
3/4 Conduit attachment
Scale 1:5
60 <2-3/8> 22.5 <7/8>
5<3/16>
24.7 <31/32>
100
<3-15/16>
FOUNDATION
OCH636A

17
7WIRING DIAGRAM
PUZ-A36NKA7 PUZ-A42NKA7 PUY-A36NKA7 PUY-A42NKA7
PUZ-A36NKA7-BS PUZ-A42NKA7-BS PUY-A36NKA7-BS PUY-A42NKA7-BS
PUZ-A12NKA7 PUZ-A18NKA7 PUY-A12NKA7 PUY-A18NKA7
PUZ-A12NKA7-BS PUZ-A18NKA7-BS PUY-A12NKA7-BS PUY-A18NKA7-BS
OCH636A

18
PUZ-A24NHA7 PUZ-A30NHA7 PUY-A24NHA7 PUY-A30NHA7
PUZ-A24NHA7-BS PUZ-A30NHA7-BS PUY-A24NHA7-BS PUY-A30NHA7-BS
OCH636A

19
PUZ-A36NKA7 PUZ-A42NKA7 PUY-A36NKA7 PUY-A42NKA7
PUZ-A36NKA7-BS PUZ-A42NKA7-BS PUY-A36NKA7-BS PUY-A42NKA7-BS
OCH636A

20
8WIRING SPECIFICATIONS
S1
S2
S3
S1
S2
S3
208/230V
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.
24A63A03A42A81A21AledomtinuroodtuO
Outdoor unit power supply
~/N (single), 60Hz,
208/230 V
~/N (single), 60Hz,
208/230 V
~/N (single), 60Hz,
208/230 V
~/N (single), 60Hz,
208/230 V
~/N (single), 60Hz,
208/230 V
~/N (single), 60Hz,
208/230 V
Outdoor unit input capacity Main switch (Breaker) *1 15 A 15 A 25 A 25 A 30 A 30 A
Wiring Wire
No. x
size (mm2)
Outdoor unit power supply 2 x Min. AWG 14 2 × Min. AWG 14 2 × Min. AWG 12 2 × Min. AWG 12 2 × Min. AWG 10 2 × Min. AWG 10
Indoor unit-Outdoor unit *2 3 x AWG 14 (polar) 3 x AWG 14 (polar) 3 x AWG 14 (polar) 3 x AWG 14 (polar) 3 x AWG 14 (polar) 3 x AWG 14 (polar)
Indoor unit-Outdoor unit earth *2
1 x Min. AWG 14 (polar) 1 x Min. AWG 14 (polar) 1 x Min. AWG 14 (polar) 1 x Min. AWG 14 (polar) 1 x Min. AWG 14 (polar) 1 x Min. AWG 14 (polar)
Remote controller-Indoor unit *4 2 × AWG 22 (Non-polar) 2 x AWG 22 (Non-polar) 2 x AWG 22 (Non-polar) 2 x AWG 22 (Non-polar) 2 x AWG 22 (Non-polar) 2 x AWG 22 (Non-polar)
Circuit
rating
Outdoor unit L1-L2 (single) *5 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC
Indoor unit-Outdoor unit S1-S2 (single) *5 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC
Indoor unit-Outdoor unit S2-S3 (single) *5 24 V DC 24 V DC 24 V DC 24 V DC 24 V DC 24 V DC
Remote controller-Indoor unit *5 12 V DC 12 V DC 12 V DC 12 V DC 12 V DC 12 V DC
*1.
*2. Max. 50 m, 164 ft
S3 separated, Max. 262 ft [80 m]
*3. Max. 100 ft [30 m]
*4. The 30 ft [10 m] wire is attached in the remote controller accessory.
*5. The figures are NOT always against the ground.
S3 terminal has 24 V DC 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.
Power supply cords, the Indoor-Outdoor connecting cable and the water heater-Outdoor connecting cable shall not be lighter than polychloroprene
sheathed flexible cord. (Design 60245 IEC 57
)
3. Use an earth wire which is longer than the other cords so that it will not become disconnected when tension is applied.
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a fire, or communication failure.
Single phase
A-Control
Outdoor Unit
A-Control
Indoor Unit
Isolator 3 poles isolator
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
AOutdoor unit power supply
BWiring circuit breaker or isolating switch
COutdoor unit
DIndoor unit/outdoor unit connecting cords
ERemote controller
FIndoor unit
GIndoor unit earth
Note: Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units..
S1
S2
L1
L2
GR
1
2
S1
S2
S3
S3
A
C
B
D
E
F
G
Be sure to earth ground construction work. As required to the leakage prevention measures.
OCH636A