Mitsubishi Electric MXZ-2C20NAHZ3 User manual

E s p a ñ o l
F ra n ç a i s
E n g l i s h
I n s t a l l a t i o n M a n u a l For INSTALLER
• This manual only describes the installation of outdoor unit.
When installing the indoor unit, refer to the installation manual of indoor unit.
Any structural alterations necessary for installation must comply w ith local build-
ing code requirements.
N o t i c e d ’ i n s t a l l a t i o n
Destinée à l ’ INSTALLATEUR
• Cette notice ne décrit que l’installation de l’appareil extérieur.
Lors de l’installation de l’appareil intérieur, consultez la notice d’installation de cet
appareil.
Toute altération structurelle requise pour l’installation doit être conforme aux exi-
gences du code du bâtiment local.
M a n u a l d e i n s t a l a c i ó n Para el INSTALADOR
• En este manual só lo se describe la instalació n de la unidad exterior.
Para instalar la unidad interior, consulte el manual de instalació n de dicha unidad.
Cualquier modicacin estructural necesaria para llevar a cabo la instalacin de-
ber cumplir las normas de edicacin locales.
S p l i t - t y p e A i r- C o n d i t i o n e r
M X Z - 2 C 2 0 N A H Z 3
M X Z - 3 C 2 4 N A H Z 3
M X Z - 3 C 3 0 N A H Z 3
M X Z - 5 C 4 2 N A 3
VG79N001H01_01En.indd 1 2021/07/13 12:24:05

1
e n
1 - 2 . S P E C I F I C A T I O N S
1 - 1 . T H E F O L L O W I N G S H O U L D A L W A Y S B E O B S E R V E D F O R S A F E T Y
• Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY” before installing the air conditioner.
• Be sure to observe the arnings and cautions specied here as they include important items related to safety.
• After reading this manual, be sure to keep it together w ith the OPERATING INSTRUCTIONS for future reference.
R e q u i re d T o o l s fo r I n s t a l l a t i o n
Phillips scredriver
Level
Scale
Utility knife or scissors
Torque w rench
Wrench (or spanner)
5/32 in. (4 mm) hexagonal
w rench
Flare tool for R410A
Gauge manifold for R410A
Vacuum pump for R410A
Charge hose for R410A
Pipe cutter w ith reamer
ENGLISH
C O N T E N T S
1. BEFORE INSTALLATION............................................................1
2. OUTDOOR UNIT INSTALLATION ...............................................3
3. FLARING WORK AND PIPE CONNECTION...............................5
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN.........6
5. PUMPING DOWN........................................................................7
Model Pow er supply Pipe length and height difference *1, *2, *3, *4, *5, *6, *8, *9
Rated Voltage Frequency Max. pipe length per indoor unit /
for multi-system Max. height difference Max. no. of bends per indoor unit / for multi system Refrigerant adjustment A *7
MXZ-2C20NAHZ3
208 / 230 V 60 Hz
82 ft. (25 m) / 164 ft. (50 m)
49 ft. (15 m)
25 / 50 1.08 oz each 5 ft.
(20 g/m)
MXZ-3C24NAHZ3
MXZ-3C30NAHZ3 82 ft. (25 m) / 230 ft. (70 m) 25 / 70
MXZ-5C42NA3 82 ft. (25 m) / 262 ft. (80 m) 25 / 80
*1 Never use pipes ith thicness less than specied. The pressure resistance
ill be insufcient.
*2 Use a copper pipe or a copper-alloy seamless pipe.
*3 Be careful not to crush or bend the pipe during pipe bending.
*4 Refrigerant pipe bending radius must be 4 in. (100 mm) or more.
*5 Insulation material : Heat resisting foam plastic 0.045 specic gravity
*6 Be sure to use the insulation of specied thicness. Excessive thicness may
cause incorrect installation of the indoor unit and insufcient thicness may
cause dew drippage.
*7 If pipe length exceeds 98 ft. (30 m), additional refrigerant (R410A) charge is
required.(Noadditionalchargeis required forpipe length lessthan 98 ft.(30 m).)
■D o n o t i n s t a l l t h e u n i t b y y o u rs e l f ( u s e r) .
Incomplete installation could cause re or electric shoc, injury due to the unit
falling, or leakage of w ater. Consult the dealer from w hom you purchased the
unit or a qualied installer.
■F o l l o w t h e i n s t ru c t i o n s d e t a i l e d i n t h e i n s t a l l a t i o n m a n u a l .
Incomplete installation could cause re or electric shoc, injury due to the unit
falling, or leakage of w ater.
■W h e n i n s t a l l i n g t h e u n i t , u s e a p p ro p ri a t e p ro t e c t i v e e q u i p m e n t a n d t o o l s
fo r s a fe t y .
Failure to do so could cause injury.
■I n s t a l l t h e u n i t s e c u re l y i n a p l a c e t h a t c a n b e a r t h e w e i g h t o f t h e u n i t .
If the installation location cannot bear the w eight of the unit, the unit could fall
causing injury.
■ P e rfo rm e l e c t ri c a l w o rk a c c o rd i n g t o t h e i n s t a l l a t i o n m a n u a l a n d b e s u re
t o u s e a n e x c l u s i v e c i rc u i t . D o n o t c o n n e c t o t h e r e l e c t ri c a l a p p l i a n c e s t o
t h e c i rc u i t .
If the capacity of the poer circuit is insufcient or there is incomplete electrical
or, it could result in a re or an electric shoc.
■G ro u n d t h e u n i t c o rre c t l y .
Do not connect the ground w ire to a gas pipe, w ater pipe, lightning rod or
telephone ground. Defective grounding could cause electric shoc.
■ D o n o t d a m a g e t h e w i re s .
Damaged ires could cause re.
■ B e s u re t o s h u t o ff t h e m a i n p o w e r w h e n s e t t i n g u p t h e i n d o o r P . C . b o a rd
o r w i ri n g .
Failure to do so could cause electric shock.
■ Use the specied ires to securely connect the indoor and outdoor units.
Attach the ires rmly to avoid applying stress to the terminal bloc.
Improper connection could cause re.
■ Do not install the unit in a place here ammable gas may lea.
If gas leaks and accumulates around the unit, it could cause an explosion.
■D o n o t u s e i n t e rm e d i a t e c o n n e c t i o n o f t h e p o w e r c o rd o r t h e e x t e n s i o n
c o rd . D o n o t c o n n e c t m a n y d e v i c e s t o o n e A C o u t l e t .
It could cause a re or an electric shoc.
■ Use the parts provided or specied parts for the installation or.
The use of defective parts could cause an injury or leaage of ater due to a
re, an electric shoc, the unit falling, etc.
■ W h e n p l u g g i n g t h e p o w e r s u p p l y p l u g i n t o t h e o u t l e t , m a k e s u re t h a t t h e re
i s n o d u s t , b l o c k a g e , o r l o o s e p a rt s b o t h i n t h e o u t l e t a n d o n t h e p l u g .
V e ri fy t h a t t h e p o w e r s u p p l y p l u g i s c o m p l e t e l y i n t h e o u t l e t .
If there is dust, blockage, or loose parts on the pow er supply plug or the outlet,
it could cause electric shoc or re. If loose parts are found on the poer supply
plug, replace it.
■ S e c u re l y a t t a c h t h e e l e c t ri c a l c o v e r t o t h e i n d o o r u n i t a n d t h e s e rv i c e
p a n e l t o t h e o u t d o o r u n i t .
If the electrical cover of the indoor unit and/or the service panel of the outdoor
unit are not attached securely, dust, w ater, etc. could collect in the unit and
could cause a re or an electric shoc.
■
W h e n i n s t a l l i n g , re l o c a t i n g , o r s e rv i c i n g t h e u n i t , m a k e s u re t h a t n o s u b s t a n c e
other than the specied refrigerant (R410A) enters the refrigerant circuit.
Any presence of foreign substance such as air can cause abnormal pressure
rise and may result in explosion or injury. The use of any refrigerant other than
that specied for the system ill cause mechanical failure, system malfunction,
or unit breakdow n. In the w orst case, this could lead to a serious impediment
to securing product safety.
■ D o n o t d i s c h a rg e t h e re fri g e ra n t i n t o t h e a t m o s p h e re . C h e c k t h a t t h e
re fri g e ra n t g a s d o e s n o t l e a k a ft e r i n s t a l l a t i o n h a s b e e n c o m p l e t e d . I f
re fri g e ra n t l e a k s d u ri n g i n s t a l l a t i o n , v e n t i l a t e t h e ro o m .
If refrigerant comes in contact ith a re, harmful gas could be generated.
If refrigerant gas leas indoors, and comes into contact ith the ame of a fan
heater, space heater, stove, etc., harmful gases ill be generated.
■ U s e a p p ro p ri a t e t o o l s a n d p i p i n g m a t e ri a l s fo r i n s t a l l a t i o n .
The pressure of R410A is 1.6 times higher than R22. Not using the appropri-
ate tools and materials, or improper installation could cause the pipes to burst
causing an injury.
■ W h e n p u m p i n g d o w n t h e re fri g e ra n t , s t o p t h e c o m p re s s o r b e fo re d i s c o n -
n e c t i n g t h e re fri g e ra n t p i p e s .
If the refrigerant pipes are disconnected w hile the compressor is running and
the stop valve is open, air could be dran in and the pressure in the refrigera-
tion cycle could become abnormally high, causing the pipes to burst.
■ W h e n i n s t a l l i n g t h e u n i t , s e c u re l y c o n n e c t t h e re fri g e ra n t p i p e s b e fo re
s t a rt i n g t h e c o m p re s s o r.
If the compressor is started before the refrigerant pipes are connected and the
stop valve is open, air could be dran in and the pressure in the refrigeration
cycle could become abnormally high, causing the pipes to burst.
■ Fasten a are nut ith a torque rench as specied in this manual.
If fastened too tight, a are nut could brea and cause refrigerant leaage.
■ I n s t a l l t h e u n i t a c c o rd i n g t o n a t i o n a l w i ri n g re g u l a t i o n s .
■B e s u re t o i n s t a l l a G ro u n d F a u l t I n t e rru p t ( G F I ) c i rc u i t b re a k e r.
Failure to install a Ground Fault Interrupt (GFI) circuit breaker may result in
electric shoc or re.
■W h e n o p e n i n g o r c l o s i n g t h e v a l v e b e l o w fre e zi n g t e m p e ra t u re s , re fri g -
e ra n t m a y s p u rt o u t fro m t h e g a p b e t w e e n t h e v a l v e s t e m a n d t h e v a l v e
b o d y , re s u l t i n g i n i n j u ri e s .
■P e rfo rm t h e d ra i n a g e / p i p i n g w o rk s e c u re l y a c c o rd i n g t o t h e i n s t a l l a t i o n
m a n u a l .
If there is defect in the drainage/piping w ork, w ater could drip from the unit,
and damage household items.
■ Do not touch the air inlet or the aluminum ns of the outdoor unit.
This could cause injury.
■D o n o t i n s t a l l t h e o u t d o o r u n i t w h e re s m a l l a n i m a l s m a y l i v e .
If small animals enter the unit and damage its electrical parts, it could cause a
malfunction, smoe emission, or re. eep the area around the unit clean.
CAUTION (Could lead to serious injury w hen operated incorrectly.)
WARNING (Could lead to death or serious injury, etc.)
1 . B E F O R E I N S T A L L A T I O N
Additional refrigerant (ft.) = A × (pipe length (ft.) - 98)
5
Additional refrigerant (m) = A × (pipe length (m) - 30)
*8 The piping specication table does not provide a minimum line set length.
Hoever, indoor units ith connected piping length less than 10 ft. (3m) could
produce intermittent noise during normal system operation in very quiet envi-
ronments. Please be aw are of this important information w hen installing and
locating the indoor unit w ithin the conditioned space.
*9 hen connecting to PAA-A18 units, be sure to provide the total piping length
of 33 ft (10 m) or more and change the gas pipe diameter to ø5/8 inch (15.88
mm).
VG79N001H01_01En.indd 1 2021/07/13 12:24:05

2
e n
1 - 4 . S E L E C T I N G T H E I N S T A L L A T I O N L O C A T I O N
• Where it is not exposed to strong w ind. If the outdoor unit is exposed to a
w ind during defrosting, the defrosting time w ill be longer.
• here airo is good and dustless.
• here rain or direct sunshine can be avoided as much as possible.
• Where neighbours are not annoyed by operation sound or hot (or cool) air.
• here rigid all or support is available to prevent the increase of operation
sound or vibration.
• Where there is no risk of combustible gas leakage.
• When installing the unit, be sure to secure the unit legs.
• Where it is at least 10 ft. (3 m) aw ay from the antenna of TV set or radio. Op-
eration of the air conditioner may interfere w ith radio or TV reception in areas
here reception is ea. An amplier may be required for the affected device.
• Install the unit horizontally.
• Please install it in an area not affected by snow fall or blow ing snow . In areas
ith heavy sno, please install a canopy, a pedestal and/or some bafe
boards.
N o t e :
It is advisable to mae a piping loop near outdoor unit so as to reduce vibration
transmitted from there.
N o t e :
When operating the air conditioner in low outside temperature, be sure to
follow the instructions described below .
• Never install the outdoor unit in a place here its air inlet/outlet side may
be exposed directly to w ind.
• To prevent exposure to ind, install the outdoor unit ith its air inlet side
facing the w all.
•
To prevent exposure to ind, it is recommended to install a bafe board on
the air outlet side of the outdoor unit.
Avoid the folloing places for installation here air conditioner trouble is
liable to occur.
• here ammable gas could lea.
• Where there is much machine oil.
• Salty places such as the seaside.
• here sulde gas is generated such as hot spring, seage, aste ater.
• Where there is high-frequency or w ireless equipment.
• here there is emission of high levels of VOCs, including phthalate com-
pounds, formaldehyde, etc., w hich may cause chemical cracking.
3 . O b s t a c l e s i n fro n t ( b l o w i n g ) o n l y
hen there is an obstacle in front of the unit as shon in the gure, open
space above, behind, and on the sides of the unit is required.
2 . F ro n t ( b l o w i n g ) s i d e o p e n
As long as space indicated in the
gure is provided, it is alloed to
installthe unit w here obstacles are
behindand on the sidesofthe unit.
(No obstacle above the unit)
F R E E S P A C E R E Q U I R E D A R O U N D O U T D O O R U N I T
Service space
• When installing the unit in an area that is enclosed w ith w alls such as a
verandah, be sure to have enough space as shon belo.
In this case, the air conditioning capacity and pow er consumption might
deteriorate.
• Wheninstalling tw o or more units, donotinstall the units in front orbehind
each other.
1 . O b s t a c l e s a b o v e
When there is no obstacle in front and
on the sides of the unit, it is allow ed
to install the unit w here an obstacle is
above the unit only if the space shon
in the gure is provided.
6 . S e rv i c e s p a c e
Provide space for service and maintenance as shon in the gure.
19-11/16 (500)
or more
3-15/16 (100)
or more
5 . O b s t a c l e s i n fro n t , b e h i n d a n d o n s i d e ( s )
(Unit: inch (mm))
Height of the obstacle is 47-1/4 (1200) or less
19-11/16 (500) or more
3-15/16 (100) or more
19-11/16 (500)
or more
13-25/32 (350) or more
3-15/16 (100) or more
13-25/32 (350) or more
3-15/16 (100) or more
7-7/8 (200) or more
13-25/32 (350)
or more
3-15/16 (100)
or more
7-7/8 (200) or more
13-25/32 (350)
or more
19-11/16 (500)
or more
19-11/16 (500)
or more
1 - 3 . S E L E C T I N G O P T I O N A L D I F F E R E N T - D I A M E T E R J O I N T S
If the diameter of connection pipe does not match the port size of outdoor unit, use optional different-diameter joints according to the follow ing table.
Port size of outdoor unit Optional different-diameter joints (port size of outdoor unit →diameter of connection pipe)
MXZ-2C MXZ-3C MXZ-5C Liquid / Gas 1/4 (6.35) →3/8 (9.52) : PAC-493PI
3/8 (9.52) →1/2 (12.7) : MAC-A454JP-E
3/8 (9.52) →5/8 (15.88) : PAC-SG76RJ-E
1/2 (12.7) →3/8 (9.52) : MAC-A455JP-E
1/2 (12.7) →5/8 (15.88) : MAC-A456JP-E
Refer to the installation manual of indoor unit for the diameter of connection pipe of indoor unit.
– A UNIT A UNIT 1/4 (6.35) / 1/2 (12.7)
A, B UNIT B - C UNIT B - E UNIT 1/4 (6.35) / 3/8 (9.52)
(Unit: inch (mm))
4 . O b s t a c l e s i n fro n t a n d b e h i n d
The unit can be used by attaching an optional outdoor blow ing guide
(PAC-SH96SG-E) (but both sides and top are open).
3-15/16 (100) or more
Blow ing guide (PAC-SH96SG-E)
19-11/16 (500) or more
VG79N001H01_01En.indd 2 2021/07/13 12:24:06

3
e n
1 - 5 . I N S T A L L A T I O N D I A G R A M
Units should be installed by licensed contractor according to
local code requirements.
After the leak test, apply insulat-
ing material tightly so that there
is no gap.
Whenthepiping is to be attached to
a w all containing metals (tin plated)
or metal netting, use a chemically
treated w ooden piece 25/32 in. (20
mm) or thicker betw een the w all
and the piping or w rap 7 to 8 turns
of insulation vinyl tape around
the piping.
To use existing piping, perform
COOL operation for 30 minutes
and pump don before removing
the old air conditioner. Remae are
according to the dimension for new
refrigerant.
P A R T S T O B E P R O V I D E D A T Y O U R S I T E
(A) Pow er supply cord* 1
(B) Indoor/outdoor unit connecting w ire* 1
(C) Extension pipe 1
(D) all hole cover 1
(E) Piping tape 1
(F) Extension drain hose (or soft PVC hose, 19/32 in. (15 mm) inner
diameter or hard PVC pipe VP16) 1
(G) Refrigeration oil Little
amount
(H) Putty 1
(I) Pipe xing band 2 to 7
(J) Fixing screw for (I) 2 to 7
(K) all hole sleeve 1
* N o t e :
Place indoor/outdoor unit connecting w ire (B) and
pow er supply cord (A) at least 3 ft. (1 m) aw ay from
the TV antenna w ire.
The ’ty for (B) to () in the above table is quantity
to be used per indoor unit.
More than
3-15/16 in.
(100 mm)
Open as a rule
More than 19-11/16
in. (500 mm) if the
front and both sides
are open
More than 3-15/16 in. (100 mm)
More than 7-7/8 in. (200 mm)
if there are obstacles to both
sides
Open as a rule
More than 19-11/16 in. (500 mm) if the
back, both sides and top are open
More than 13-25/32 in.
(350 mm)
O u t d o o r u n i t i n s t a l l a t i o n
Air inlet
Air outlet
2-U-shape notched holes
(Base bolt M10)
Unit : inch
2 - 1 . I N S T A L L I N G T H E U N I T
Fix here w ith
M10 bolts.
Make the setting
depth deeper. Make w ith w ider.
Anchor leg
31/32 (25) or less
Anchor bolt length Anchor bolt pitch
(Unit: inch (mm))
• Be sure to x the unit’s legs ith bolts hen installing it.
• Be sure to install the unit rmly to ensure that it does not fall by an earthquae or a gust.
• Refer to the gure in the right for concrete foundation.
• In case of MXZ-2C20NAHZ3, MXZ-3C24/30NAHZ3, do not use the drain socket and the drain caps.
• In case of MXZ-5C42NA3, do not use the drain socket and the drain caps in the cold region. Drain may freeze and it makes the fan stop.
23-5/8
(600)
14-9/16
(370)
O u t d o o r u n i t i n s t a l l a t i o n
37-13/32
23-5/8
6-7/8
2 - (15/32 × 1-13/32)
oval holes (Base bolt M10)
Air inlet
13
14-9/16
16-13/32
Air inlet
Air outlet
2-U-shape notched holes
(Base bolt M10)
Unit : mm
950
600175
2 - 12 × 36
oval holes (Base bolt M10)
Air inlet
330
370
417
2 . O U T D O O R U N I T I N S T A L L A T I O N
VG79N001H01_01En.indd 3 2021/07/13 12:24:06

4
e n
2 - 2 . C O N N E C T I N G W I R E S F O R O U T D O O R U N I T
• Be sure to use special circuits for room air conditioner.
• Wiring w ork should be based on applicable technical standards.
• Wiring connections should be made follow ing the diagram.
• Screw s should be tightened so they w on’t loosen.
ELECTRICAL SPECIFICATIONS
OUTDOOR UNIT MXZ-2C20NAHZ3 MXZ-3C24NAHZ3 MXZ-3C30NAHZ3 MXZ-5C42NA3
Pow er supply
(V, PHASE, Hz) 208/230, 1, 60
Max. Fuse size
(time delay) (A) 40
Min. Circuit
Ampacity (A) 28.9 29.9 29.9 31.9
Fan motor
(F.L.A) 1.90
Com-
pressor (R.L.A) 20
(L.R.A) 28.8
Control voltage Indoor unit-Remote controller : (Wireless)
Indoor unit-Outdoor unit : DC 12-24 V
1-3/8 in.
(35 mm)
5/8 in.
(15 mm)
Lead w ire
1) Remove the service panel.
2) Remove the conduit plate.
3) Attach the conduit connector to conduit plate w ith lock nut then secure
it to the unit w ith screw s. Be sure to attach the conduit connectors in
the correct locations according to their sizes.
4) Connect ground w ires to the TB bed.
5) Loosen terminal screw , and connect indoor/outdoor unit connecting
w ire (B) from the indoor unit correctly on the terminal block. Be careful
not to make mis-w iring. Fix the w ire to the terminal block securely so
that no part of its core is appeared, and no external force is conveyed
to the connecting section of the terminal block.
6) irmly tighten the terminal scres to prevent them from loosening. After
tightening, pull the ires lightly to conrm that they do not move.
7) Perform 5) and 6) for each indoor unit.
8) Connect pow er supply cord (A).
9) Close the service panel securely. Mae sure that 3-2. PIPE CONNEC-
TION is completed.
Connecting order
• Connect the terminal
block in follow ing order.
Pow er supply
Terminal block for
indoor/outdoor unit
Service panel Screw s
Lock nut Conduit connector
C O N N E C T I N G W I R E S A N D C O N N E C T I N G G R O U N D W I R E
• Use solid conductor Min. AWG14 or stranded conductor Min. AWG14.
• Use double insulated copper w ire w ith 600 V insulation.
• Use copper conductors only.
* F o l l o w l o c a l e l e c t ri c a l c o d e .
P O W E R S U P P L Y C A B L E
• Use solid or stranded conductor Min. AWG8.
• Use copper conductors only.
* F o l l o w l o c a l e l e c t ri c a l c o d e .
G R O U N D W I R E
• Use solid or stranded conductor Min. AWG8.
• Use copper conductors only.
* F o l l o w l o c a l e l e c t ri c a l c o d e .
W A R N I N G :
• U s e t h e i n d o o r/ o u t d o o r u n i t c o n n e c t i n g w i re t h a t m e e t s t h e S t a n d -
ards to connect the indoor and outdoor units and x the ire to
t h e t e rm i n a l b l o c k s e c u re l y s o t h a t n o e x t e rn a l fo rc e i s c o n v e y e d
t o t h e c o n n e c t i n g s e c t i o n o f t h e t e rm i n a l b l o c k . A n i n c o m p l e t e
connection or xing of the ire could result in a re.
R e m a rk :
* A disconnect sw itch should be required. Check the local code.
** Use a ring tongue terminal in order to connect a ground w ire to terminal.
• C o n n e c t w i re s t o t h e m a t c h i n g n u m b e rs o f t e rm i n a l s .
• B e s u re t o a t t a c h e a c h s c re w t o i t s c o rre s p o n d e n t t e rm i n a l w h e n
s e c u ri n g t h e c o rd a n d / o r t h e w i re t o t h e t e rm i n a l b l o c k .
GR
Terminal block
Grounding
terminal **
2 0 8 / 2 3 0 V A C
1 p h a s e 6 0 H z
Grounding
terminal **
Terminal block Ground
OUTDOOR UNIT
Pow er supply
208/230 V AC
1 phase 2 w ires 60 Hz
Disconnect
sw itch * Grounding
terminal **
Terminal block Terminal block
Terminal block
or future servicing, give extra length to the connecting ires.
Conduit connector Trade size of conduit
(a) Pow er supply 3/4 in.
(b) Indoor/outdoor 1/2 in.
Conduit plate U
Conduit plate T
< 2C >< 3C >< 5C >
ABC
P
ABC
P
ABC ABC
PP
MXZ-2C A→B→P
MXZ-3C A→B→C→P
MXZ-5C A→B→C→D→E→P
A- B(MXZ-2C)
A- C(MXZ-3C)
A- E(MXZ-5C)
INDOOR UNIT
A- B(MXZ-2C)
A- C(MXZ-3C)
A- E(MXZ-5C)
* C: MXZ-3C only
Attach the conduit
connector (a)
Attach the conduit
connector (b)
Conduit plate U
<MXZ-3C/5C only>
Conduit plate T
ABC
DE
P
ABC
DE
P
ABC
E
P
ABC
DED
P
Pow er supply
Terminal block for
indoor/outdoor unit
<MXZ-2C/3C>
<MXZ-5C>
N o t e :
• Removing the handle increases the effectiveness of the iring operation.
• Be sure to reinstall the handle.
<MXZ-3C/5C only>
Handle
• T u rn o n t h e m a i n p o w e r w h e n t h e a m b i e n t t e m p e ra t u re i s - 4 ° F
( - 2 0 ° C ) o r h i g h e r.
• U n d e r c o n d i t i o n s o f - 4 ° F ( - 2 0 ° C ) , i t n e e d s a t l e a s t 4 h r s t a n d b y
b e fo re t h e u n i t s o p e ra t e i n o rd e r t o w a rm t h e e l e c t ri c a l p a rt s .
VG79N001H01_01En.indd 4 2021/07/13 12:24:06

5
e n
Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5 Fig. 6
Tilted Uneven Burred
Good No good
Burr Copper pipe
Spare reamer
Pipe cutter
Smooth all
around
Even length
all around
Inside is shin-
ing w ithout any
scratches.
B
Flare nut
Die Copper pipe
Clutch type
Flaring tool
Wing nut type
Copper
pipe
Pipe diameter
[inch (mm)] B [inch (mm)] A [inch (mm)] Tightening torque
Clutch type tool for R410A Clutch type tool for R22 Wing nut type tool for R22 ft-Ib N•m kgf•cm
1/4 (ø6.35) 21/32 (17) 0 to 0.02
(0 to 0.5) 0.04 to 0.06 (1.0 to 1.5)
0.06 to 0.08
(1.5 to 2.0) 10 to 13 13.7 to 17.7 140 to 180
3/8 (ø9.52) 7/8 (22) 25 to 30 34.3 to 41.2 350 to 420
1/2 (ø12.7) 1-1/32 (26) 0.08 to 1.0
(2.0 to 2.5) 36 to 42 49.0 to 56.4 500 to 575
5/8 (ø15.88) 1-5/32 (29) 54 to 58 73.5 to 78.4 750 to 800
3 - 1 . F L A R I N G W O R K
1) Cut the copper pipe correctly w ith pipe cutter. (Fig. 1, 2)
2) Completely remove all burrs from the cut cross section of
pipe. (Fig. 3)
• Aim the copper pipe donard hile removing burrs to
prevent burrs from dropping in the pipe.
3) Remove are nuts attached to indoor and outdoor units,
then put them on pipe having completed burr removal.
(Not possible to put them on after aring or.)
4) Flaring w ork (Fig. 4, 5). Firmly hold copper pipe in the
dimension show n in the table. Select A inch (mm) from
the table according to the tool selected.
5) Check
• Compare the ared or ith ig. 6.
• If are is noted to be defective, cut off the ared section
and do aring or again.
3 . F L A R I N G W O R K A N D P I P E C O N N E C T I O N
*1 When the diameter of connection pipe does not match the port size of the
indoor unit, use an optional different-diameter joint.
*2 Refer to the installation manual of P series for details of MVZ-A and SVZ-KP.
*3 To connect the PAA-A18 unit, change the gas pipe diameter to ø5/8 inch
(15.88 mm).
• Use tightening torque table above as a guideline for indoor unit side union
joint section, and tighten using to renches. Excessive tightening damages
the are section.
1) Apply a thin coat of refrigeration oil (G) to the ared ends of the pipes and the
pipe connections of the outdoor unit. Do not apply refrigeration oil on screw
threads. Excessive tightening torque ill result in damage on the scre.
2) or connection, rst align the center, then tighten the rst 3 to 4 turns of are
nut by hand.
3) Tighten the are nut ith a torque rench as specied in the table.
• Over-tightening may cause damage to the are nut, resulting in refrigerant
leakage.
• Be sure to w rap insulation around the piping. Direct contact w ith the bare
piping may result in burns or frostbite.
3 - 3 . I N S U L A T I O N A N D T A P I N G
1) Cover piping joints ith pipe cover.
2) or outdoor unit side, surely insulate every piping including valves.
3) Using piping tape (E), apply taping starting from the entry of outdoor unit.
• Stop the end of piping tape (E) ith tape (ith adhesive agent attached).
• hen piping have to be arranged through above ceiling, closet or here
the temperature and humidity are high, w ind additional commercially sold
insulation to prevent condensation.
3 - 2 . P I P E C O N N E C T I O N
• The connected pipe size differs depending the models and the capacities of indoor units.
WARNING
W h e n i n s t a l l i n g t h e u n i t , s e c u re l y
c o n n e c t t h e re fri g e ra n t p i p e s b e fo re
s t a rt i n g t h e c o m p re s s o r.
CAUTION
W h e n t h e re a re t h e p o rt s w h i c h a re
n o t u s e d , m a k e s u re t h e i r n u t s a re
t i g h t e n e d s e c u re l y .
Indoor unit capacity 06 ~ 09 12 15 ~ 18 24
Indoor unit: M series Liquid pipe size ø6.35 ø6.35 ø6.35 ø9.52 *1
Gas pipe size ø9.52 ø9.52 ø12.7 ø15.88
Indoor unit: S series Liquid pipe size ø6.35 ø6.35 ø6.35 ø9.52
Gas pipe size ø9.52 ø9.52 ø12.7 ø15.88
Indoor unit: P series *2 Liquid pipe size ø6.35 ø6.35 ø6.35 ø9.52
Gas pipe size ø9.52 ø12.7 ø12.7 *3 ø15.88
VG79N001H01_01En.indd 5 2021/07/13 12:24:06

6
e n
4 - 1 . P U R G I N G P R O C E D U R E S A N D L E A K T E S T
1) Remove service port cap of stop valve on the side of the outdoor unit gas pipe. (The
stop valves are fully closed and covered in caps in their initial state.)
2) Connect gauge manifold valve and vacuum pump to service port of stop valve on
the side of the outdoor unit gas pipe.
3) Run the vacuum pump. (Vacuumize for more than 15 minutes.)
4) Chec the vacuum ith gauge manifold valve, then close gauge manifold valve,
and stop the vacuum pump.
5) Leave as it is for one or to minutes. Mae sure the pointer of gauge manifold valve
remains in the same position. Conrm that pressure gauge shos -14. psi Gauge
(-0.101 MPa).
6) Remove gauge manifold valve quicly from service port of stop valve.
) After refrigerant pipes are connected and evacuated, fully open the valve stem of
all stop valves on both sides of gas pipe and liquid pipe by the hexagonal rench.
If the valve stem hits the stopper, do not turn it any further. Operating ithout fully
opening low ers the performance and this causes trouble.
8) Refer to 1-2., and charge the prescribed amount of refrigerant if needed. Be sure
to charge slow ly w ith liquid refrigerant. Otherw ise, composition of the refrigerant in
the system may be changed and affect performance of the air conditioner.
9) Tighten cap of service port to obtain the initial status.
10 )Leak test
Gauge manifold
valve
(for R410A)
Compound pressure
gauge (for R410A)
Handle High
Charge hose
(for R410A)
Pressure gauge
(for R410A)
-14.7 psi
(-0.101 MPa)
Handle Low
Vacuum pump
(for R410A) Stop valve cap
(Torque 15 to
20 ft-lb, 21.5 to
27.5 N•m, 220
to 280 kgf•cm)
Close
Open
Hexagonal w rench
Service port cap
(Torque 7 to 9 ft-lb,
10 to 12 N•m, 100
to 120 kgf•cm)
4 - 2 . G A S C H A R G E
Perform gas charge to unit.
1) Connect gas cylinder to the service port of stop valve.
2) Perform air purge of the pipe (or hose) coming from refrigerant gas cylinder.
3) Replenish specied amount of the refrigerant, hile operating the air conditioner for cooling.
N o t e :
In case of adding refrigerant, comply ith the quantity specied for the refrigerating cycle.
C A U T I O N :
When charging the refrigerant system w ith additional refrigerant, be sure to use liquid refrigerant.
Adding gas refrigerant may change the composition of the refrigerant in the system and affect
normal operation of the air conditioner. Also, charge the liquid refrigerant slow ly, otherw ise the
compressor w ill be locked.
To maintain the high pressure of the gas cylinder, w arm the gas cylinder w ith w arm w ater (under
104 (40C)) during cold season. But never use naed re or steam.
Union
Stop valve
Liquid
pipe
Indoor
unit
Stop valve ith
service port Gas
pipe
Refrigerant gas
cylinder
operating valve
(for R410A) Gauge manifold
valve (for R410A)
Charge hose
(for R410A)
Refrigerant gas cylinder for R410A w ith siphon
Electronic scale for refrigerant charging
Refrigerant (liquid)
Outdoor
unit
Union
Union
Union
Model Indoor unit
MXZ-2C A– B
MXZ-3C A– C
MXZ-5C A– E
Stop valve cap
(Torque 18 to
22 ft-lb, 24.4 to
30.4 N•m, 250
to 310 kgf•cm)
Precautions w hen us-
ing the control valve
hen attaching the control valve
to the service port, valve core may
deform or loosen if excess pres-
sure is applied. This may cause
gas leak.
Service port
Charge hose
(for R410A)
Body
Close
Open
Control
valve
A
hen attaching the control valve to
the service port, mae sure that the
valve core is in closed position, and
then tighten part A. Do not tighten
part A or turn the body hen valve
core is in open position.
4 . P U R G I N G P R O C E D U R E S , L E A K T E S T , A N D T E S T R U N
Valve stem
WARNING
W h e n o p e n i n g o r c l o s i n g t h e v a l v e
b e l o w fre e zi n g t e m p e ra t u re s ,
re fri g e ra n t m a y s p u rt o u t fro m t h e
g a p b e t w e e n t h e v a l v e s t e m a n d t h e
v a l v e b o d y , re s u l t i n g i n i n j u ri e s .
Cap
Valve stem
Valve body
VG79N001H01_01En.indd 6 2021/07/13 12:24:07

7
e n
When relocating or disposing of the air conditioner, pump dow n the system follow ing the procedure below so that no refrigerant is released into the atmosphere.
1) Turn off the breaker.
2) Connect the gauge manifold valve to the service port of the stop valve on the gas pipe side of the outdoor unit.
3) ully close the stop valve on the liquid pipe side of the outdoor unit.
4) Turn on the breaker.
5) Start the emergency COOL operation on all the indoor units.
6) When the pressure gauge show s
0.1 to 0 psi Gauge (0.05 to 0 MPa), fully close the stop valve on the gas pipe side of the outdoor unit and stop the operation. (Refer
to the indoor unit installation manual about the method for stopping the operation.)
* If too much refrigerant has been added to the air conditioner system, the pressure may not drop to 0.1 to 0 psi [Gauge] (0.05 to 0 MPa) , or the protection function
may operate due to the pressure increase in the high-pressure refrigerant circuit. If this occurs, use a refrigerant collecting device to collect all of the refrigerant in
the system, and then recharge the system ith the correct amount of refrigerant after the indoor and outdoor units have been relocated.
) Turn off the breaer. Remove the pressure gauge and the refrigerant piping.
W h e n t h e re fri g e ra t i o n c i rc u i t h a s a l e a k , d o n o t e x e c u t e p u m p d o w n w i t h t h e c o m p re s s o r.
W h e n p u m p i n g d o w n t h e re fri g e ra n t , s t o p t h e c o m p re s s o r b e fo re d i s c o n n e c t i n g t h e re fri g e ra n t p i p e s .
T h e c o m p re s s o r m a y b u rs t i f a i r e t c . g e t i n t o i t .
WARNING
5 . P U M P I N G D O W N
4 - 3 . T E S T R U N
Be sure to also check the follow ing.
The outdoor unit is not faulty. When the outdoor unit fails, LED outdoor unit control panel blinks.
Both the gas and liquid stop valves are completely open.
• Test runs of the indoor units should be performed individually. See the installation manual coming ith the indoor
unit, and make sure all the units operate properly.
• If the test run w ith all the units is performed at once, possible erroneous connections of the refrigerant pipes and
the indoor/outdoor unit connecting w ires cannot be detected. Thus, be sure to perform the test run one by one.
A b o u t t h e re s t a rt p ro t e c t i v e m e c h a n i s m
Once the compressor stops, the restart preventive device operates so the compressor ill not operate for 3
minutes to protect the air conditioner.
W i ri n g / p i p i n g c o rre c t i o n fu n c t i o n
This unit has a w iring/piping correction function w hich corrects w iring and piping combination. When there is pos-
sibility of incorrect iring and piping combination, and conrming the combination is difcult, use this function to
detect and correct the combination by follow ing the procedures below .
Make sure that the follow ing is done.
• Pow er is supplied to the unit.
• Stop valves are open.
N o t e :
During detection, the operation of the indoor unit is controlled by the outdoor unit. During detection, the indoor unit automatically stops operation. This is not a mal-
function.
Procedure
Pressthe piping/w iring correction sw itch(SW871)1 minute or moreafterturning on the pow ersupply.
• Correction completes in 10 to 20 minutes. When the correction is completed, its result is show n
by LED indication. Details are described in the follow ing table.
• To cancel this function during its operation, press the piping/w iring correction sw itch (SW871)
again.
• When the correction completed w ithout error, do not press the piping/w iring correction sw itch
(SW871) again.
When the result is “Not completed”, press the piping/w iring correction sw itch (SW871) again to
cancel this function. Then, conrm the iring and piping combination in a conventional manner by
operating the indoor units one by one.
• The operation is done w hile the pow er is supplied. Make sure not to contact parts other than the
sitch, including the P.C. board. This may cause electric shoc or burn by hot parts and live parts
around the sitch. Contacting the live parts may cause P.C. board damage.
• To prevent electronic control P.C. board damage, mae sure to perform static elimination before
operating this function.
• This function does not operate w hen the outside temperature is 32°F (0°C) or below .
4 - 4 . E X P L A N A T I O N T O T H E U S E R
• Using the OPERATING INSTRUCTIONS, explain to the user ho to use the air conditioner (ho to use the remote controller, ho to remove the air lters, ho to
remove or put the remote controller in the remote controller holder, ho to clean, precautions for operation, etc.).
• Recommend the user to read the OPERATING INSTRUCTIONS carefully.
L E D i n d i c a t i o n d u ri n g d e t e c t i o n :
LED1
(Red) LED2 (Yellow ) LED3 (Green)
Lit Lit Once
R e s u l t o f p i p i n g / w i ri n g c o rre c t i o n fu n c t i o n
LED1
(Red) LED2 (Yellow ) LED3 (Green) Result
Lit Not lit Lit Completed (Problem corrected or
normal)
Once Once Once Not completed
(Detection failed)
Other indications
Refer to “SAFETY PRE-
CAUTIONS WHEN LED
BLINKS” located behind
the service panel.
S W 8 7 1
L ED
VG79N001H01_01En.indd 7 2021/07/13 12:24:07

1
fr
1 - 2 . F I C H E T E C H N I Q U E
Modèle
Alimentation Longueur des tuyaux et différence de hauteur *1 *2, *3, *4, *5, *6, *8, *9
Tension
nominale Fréquence Longueur max. des tuyaux par
appareil intérieur / pour système à
plusieurs appareils Différence de
hauteur max.
Nombre max. de coudes par
appareil intérieur / pour système à
plusieurs appareils
Dosage du réfrigérant
A *7
MXZ-2C20NAHZ3
208 / 230 V 60 Hz
82 pi. (25 m) / 164 pi. (50 m)
49 pi. (15 m)
25 / 50 1,08 once tous les 5 pi.
(20 g/m)
MXZ-3C24NAHZ3
MXZ-3C30NAHZ3 82 pi. (25 m) / 230 pi. (70 m) 25 / 70
MXZ-5C42NA3 82 pi. (25 m) / 262 pi. (80 m) 25 / 80
*1 N’utilisezjamais destuyaux dont l’épaisseurest inférieureàcelle recommandée.
Leur résistance à la pression serait insufsante.
*2 Utilisez un tuyau en cuivre ou en alliage de cuivre sans soudure.
*3 Veillez à ne pas écraser ou tordre le tuyau lors du cintrage.
*4
Le rayon du cintrage d’un tuyau de réfrigérant doit être de 4 po. (100 mm) minimum.
*5 Matériau d’isolation : mousse plastique résistante à la chaleur d’une densité de 0,045
*6 Utilisez toujours un matériau isolant de l’épaisseur spéciée. Une isolation trop
épaisse pourrait être à l’origine d’une installation incorrecte de l’unité interne
alors qu’une isolation trop ne pourrait provoquer des fuites.
*7 Si la longueur du tuyau dépasse 98 pi. (30 m), une quantité supplémentaire
de réfrigérant (R410A) doit être ajoutée. (Aucune quantité supplémentaire
n’est nécessaire pour une longueur de tuyau inférieure à 98 pi. (30 m).)
O u t i l s n é c e s s a i re s à l ’ i n s t a l l a t i o n
Tournevis Phillips
Niveau
Règle graduée
Couteau tout usage ou paire de ciseaux
Clé dynamométrique
Clé à ouverture xe (ou clé simple)
Clé hexagonale de 5/32 po. (4 mm)
Outil d’évasement pour le modèle R410A
Tubulure de jauge pour le modèle R410A
Pompe à vide pour le modèle R410A
Tuyau de charge pour le modèle R410A
Coupe-tuyau avec alésoir
FRANÇAIS
1 - 1 . I N S T R U C T I O N S A R E S P E C T E R A T O U T M O M E N T P A R M E S U R E D E S E C U R I T E
• Veuillez lire les “INSTRUCTIONS A RESPECTER A TOUT MOMENT PAR MESURE DE SECURITE” avant de procéder à l’installation du climatiseur.
• Veuillez respecter scrupuleusement les mises en garde contenues dans cette notice car elles concernent des points essentiels à la sécurité.
• Après avoir lu la présente notice, veuillez la conserver avec les NOTICE D’UTILISATION de l’appareil pour pouvoir la consulter ultérieurement.
1 . A V A N T L ’ I N S T A L L A T I O N
■N ’ i n s t a l l e z p a s l ’ u n i t é v o u s - m ê m e ( u t i l i s a t e u r) .
Une installation incomplète peut être à l’origine d’un incendie, d’une
électrocution, de blessures suite à la chute de l’appareil ou de fuites
d’eau. Consulter un revendeur local ou un installateur agréé.
■S u i v e z l e s i n s t ru c t i o n s d é t a i l l é e s d a n s l e m a n u e l d ’ i n s t a l l a t i o n .
Une installation incomplète peut être à l’origine d’un incendie, d’un choc élec-
trique ou de blessures à la suite de la chute de l’unité ou de fuites d’eau.
■L o rs d e l ’ i n s t a l l a t i o n d e l ’ a p p a re i l , u t i l i s e r l ’ é q u i p e m e n t d e p ro t e c t i o n e t
l e s o u t i l s a d é q u a t s , p a r m e s u re d e s é c u ri t é .
Le non-respect de ces recommandations peut être à l’origine de blessures.
■I n s t a l l e z s o l i d e m e n t l ’ u n i t é d a n s u n e n d ro i t c a p a b l e d e s u p p o rt e r s o n
p o i d s .
Sil’emplacement d’installation ne peutpas supporter le poidsdel’unité, celle-ci
risque de tomber et de provoquer des blessures.
■ E x é c u t e z l e s t ra v a u x é l e c t ri q u e s s e l o n l e m a n u e l d ’ i n s t a l l a t i o n e t v e i l l e z à
u t i l i s e r u n c i rc u i t u n i q u e . N e b ra n c h e z p a s d ’ a u t re s a p p a re i l s é l e c t ri q u e s
a u c i rc u i t .
Un circuit électrique d’une capacité insufsante ou des travaux électriques
incomplets peuvent être à l’origine d’un incendie ou d’un choc électrique.
■R a c c o rd e z c o rre c t e m e n t l ’ u n i t é à l a t e rre .
Ne branchez pas le l de terre à un tuyau de gaz ou d’eau, à un paratonnerre
ou à la ligne de terre téléphonique. Une mise à la terre défectueuse peut
entraîner un choc électrique.
■ V e i l l e z à n e p a s e n d o m m a g e r l e s c â b l e s .
Des câbles endommagés peuvent provoquer un incendie.
■ Veillez à toujours couper l’alimentation principale lors de la conguration
d e l a c a rt e à c i rc u i t s i m p ri m é s i n t e rn e o u d u c â b l a g e .
Le non-respect de cette recommandation peut entraîner un choc électrique.
■ Utilisez les câbles spéciés pour raccorder en toute sécurité les unités
i n t e rn e e t e x t e rn e . F i x e z l e s c â b l e s s o l i d e m e n t p o u r é v i t e r t o u t e p re s s i o n
s u r l e b l o c d e ra c c o rd e m e n t .
Un raccordement incorrect peut provoquer un incendie.
■
N’installez pas l’unité dans un endroit exposé à des fuites de gaz inammable.
La fuite ou l’accumulation de gaz autour de l’unité peut entraîner une explosion.
■N ’ u t i l i s e z p a s d e ra c c o rd i n t e rm é d i a i re o u d e ra l l o n g e p o u r b ra n c h e r l e
c o rd o n d ’ a l i m e n t a t i o n . N e b ra n c h e z p a s p l u s i e u rs a p p a re i l s à u n e p ri s e
s e c t e u r.
Cela peut provoquer un incendie ou un choc électrique.
■
Utilisez les pièces fournies ou spéciées lors des travaux d’installation.
L’utilisation de pièces défectueuses peut être à l’origine de blessures ou de
fuites d’eau dues à un incendie, un choc électrique, la chute de l’unité, etc.
■ Lors du branchement de la che d’alimentation dans la prise secteur,
vériez qu’aucune poussière, saleté ni d’élément desserré n’est présent
sur la prise et la che. Veillez à enfoncer à fond la che d’alimentation
d a n s l a p ri s e s e c t e u r.
La présence de poussière, de saleté ou d’éléments desserrés sur la che
d’alimentation ou la prise secteur peut entraîner un choc électrique ou un
incendie. Remplacez les éventuels éléments desserrés.
■ F i x e z c o rre c t e m e n t l e c o u v e rc l e d u b o î t i e r é l e c t ri q u e d e l ’ u n i t é i n t e rn e
e t l e p a n n e a u d e s e rv i c e d e l ’ u n i t é e x t e rn e .
Sile couvercle du boîtier électriquedel’unité interne et/ou le panneaudeservice
de l’unité externe sont mal xés, ils risquent de provoquer un incendie ou un choc
électrique en raison de la poussière, de l’eau, etc. présentes dans le circuit.
■ L o rs d e l ’ i n s t a l l a t i o n , d u d é p l a c e m e n t o u d e l ’ e n t re t i e n d e l ’ a p p a re i l , v e i l l e r
à ce qu’aucune substance autre que le réfrigérant spécié (R410A) ne
p é n è t re d a n s l e c i rc u i t d e ré fri g é ra t i o n .
La présence d’une substance étrangère, comme de l’air dans le circuit, peut
provoquer une augmentation anormale de la pression et causer une explo-
sion, voire des blessures. L’utilisation de réfrigérant autre que celui qui est
spécié pour le système provoquera une défaillance mécanique, un mauvais
fonctionnement du système, ou une panne de l’appareil. Dans le pire des cas,
la sécurité du produit pourrait être gravement mise en danger.
■ Ne libérez pas le réfrigérant dans l’atmosphère. Vériez l’absence de
fu i t e s d e g a z ré fri g é ra n t u n e fo i s l ’ i n s t a l l a t i o n t e rm i n é e . E n c a s d e fu i t e
d e ré fri g é ra n t p e n d a n t l ’ i n s t a l l a t i o n , a é re z l a p i è c e .
Sile réfrigérant entre en contactavecun feu, des substances toxiquespeuvent
se dégager. Si le réfrigérant entre en contact avec la amme d’un appareil
de chauffage à ventilation, chauffage d’appoint, poêle, etc., des substances
toxiques peuvent se dégager.
■ U t i l i s e z l e s o u t i l s e t l ’ é q u i p e m e n t d e t u y a u t e ri e a d a p t é s à l ’ i n s t a l l a t i o n .
La pression du réfrigérant R410A est 1,6 fois supérieure à celle du R22. L’uti-
lisation d’outils et d’équipements non adaptés ou une installation incomplète
peut provoquer l’éclatement des tuyaux et blesser quelqu’un.
■ P e n d a n t l ’ o p é ra t i o n d ’ a s p i ra t i o n d u ré fri g é ra n t , a rrê t e z l e c o m p re s s e u r
a v a n t d e d é b ra n c h e r l e s t u y a u x d e ré fri g é ra n t .
Si les tuyaux de réfrigérant sont débranchés alors que le compresseur fonc-
tionneet si le robinet d’arrêtest ouvert, de l’air pourraitêtre aspiré et la pression
du cycle de réfrigération pourrait augmenter de façon anormale, entraînant
l’explosion des tuyaux.
■ P e n d a n t l ’ i n s t a l l a t i o n d e l ’ u n i t é , b ra n c h e z c o rre c t e m e n t l e s t u y a u x d e
ré fri g é ra n t a v a n t d e l a n c e r l e c o m p re s s e u r.
Si le compresseur démarre avant le branchement des tuyaux de réfrigérant et
sile robinet d’arrêt est ouvert,del’air pourrait être aspiré etlapression du cycle
de réfrigération pourrait augmenter de façon anormale, entraînant l’explosion
des tuyaux.
■ Fixez un écrou évasé avec une clé dynamométrique comme spécié dans
c e m a n u e l .
S’il est trop serré, il risque de se rompre et de provoquer une fuite de réfrigérant.
■ I n s t a l l e z l ’ u n i t é c o n fo rm é m e n t a u x n o rm e s é l e c t ri q u e s n a t i o n a l e s .
■ S ’ a s s u re r d ’ i n s t a l l e r u n d i s j o n c t e u r d e fu i t e s à l a t e rre .
L’absenced’un disjoncteur de fuites àlaterre peut entraîner un chocélectrique
ou un incendie.
■ L o rs d e l ’ o u v e rt u re o u d e l a fe rm e t u re d e l a v a n n e à d e s t e m p é ra t u re s
inférieures à 32°F (0°C), du réfrigérant peut gicler de l’espace entre la
t i g e d e v a n n e e t l e c o rp s d e v a n n e e t p ro v o q u e r d e s b l e s s u re s .
■R é a l i s e z l e s t ra v a u x d e v i d a n g e / t u y a u t e ri e c o n fo rm é m e n t a u m a n u e l
d ’ i n s t a l l a t i o n .
Siles travaux de vidange/tuyauterie nesontpas réalisés correctement, del’eau
pourrait s’écouler de l’unité et endommager le mobilier.
■
N e t o u c h e z n i l ’ e n t ré e d ’ a i r n i l e s a i l e t t e s e n a l u m i n i u m d e l ’ u n i t é e x t e rn e .
Cela peut provoquer des blessures.
■N ’ i n s t a l l e z p a s l ’ u n i t é e x t e rn e à p ro x i m i t é d e l ’ h a b i t a t d e p e t i t s a n i m a u x .
Si des petits animaux entrent dans l’unité et endommagent ses composants
électriques, ils peuvent provoquer un dysfonctionnement, des émissions de
fumée ou un incendie. Nettoyez régulièrement la périphérie de l’unité.
ATTENTION
(Pouvant entraîner des blessures graves si l’unité n’est pas utilisée correctement.)
AVERTISSEMENT (Peut entraîner la mort ou des blessures graves, etc.)
Quantitésupplémentairederéfrigérant(pi.)=A× (longueur de tuyau (pi.) – 98)
5
Quantité supplémentaire de réfrigérant (m)
= A × (longueur de tuyau (m) – 30)
*8 Le tableau des spécications de tuyauterie n’indique pas de longueur de ligne
minimum. Cependant, les appareils intérieurs dont la longueur de tuyauterie
connectée est inférieure à 10 pi. (3 m) pourraient produire un bruit intermittent
pendant le fonctionnement normal du système dans des environnements très
calmes. Tenez compte de cette information importante lors de l’installation et
du positionnement de l’appareil intérieur dans l’espace climatisé.
*9 Lorsque vous connectez deux appareils PAA-A18, prévoyez une longueur de
tuyauterie totale de 33 pi (10 m) ou plus et changez le diamètre du tuyau de
gaz en ø5/8 pouce (15,88 mm).
T A B L E D E S M A T I E R E S
1. AVANT L’INSTALLATION.....................................................................................1
2. INSTALLATION DE L’APPAREIL EXTÉRIEUR....................................................3
3. TRAVAUX D’EVASEMENT ET RACCORDEMENT DES TUYAUX......................5
4. PROCEDURES DE PURGE, TEST DE CONTROLE DES FUITES ET
ESSAI DE FONCTIONNEMENT .............................................................................6
5. PURGE ................................................................................................................7
VG79N001H01_02Fr.indd 1 2021/07/16 9:23:18

2
fr
1 . O b s t a c l e s a u - d e s s u s d e l ’ a p p a re i l
Enl’absenced’obstaclesurledevantetd’un côté ou de l’autre de l’appareil,
ce dernier peut être installé même si un obstacle se trouve au-dessus de
lui à condition que l’espace qui sépare l’appareil de l’obstacle soit au moins
équivalent à celui indiqué sur l’illustration.
1 - 3 . S É L E C T I O N D E J O I N T S D E D I A M È T R E D I F F É R E N T E N O P T I O N
Si le diamètre des tuyaux de connexion ne correspond pas au diamètre de passage de l’appareil extérieur, utiliser des joints de diamètre différent en option selon le
tableau suivant.
Diamètre de passage de l’appareil extérieur Joints de diamètre différent en option
(diamètre de passage de l’appareil extérieur → diamètre du tuyau de connexion)
MXZ-2C MXZ-3C MXZ-5C Liquide / Gaz 1/4 (6,35) →3/8 (9,52) : PAC-493PI
3/8 (9,52) →1/2 (12,7) : MAC-A454JP-E
3/8 (9,52) →5/8 (15,88) : PAC-SG76RJ-E
1/2 (12,7) →3/8 (9,52) : MAC-A455JP-E
1/2 (12,7) →5/8 (15,88) : MAC-A456JP-E
Se reporter au manuel d’installation de l’appareil intérieur pour connaître
le diamètre du tuyau de connexion de l’appareil intérieur.
–APPAREILS A APPAREILS A 1/4 (6,35) / 1/2 (12,7)
APPA-
REILS A, B APPAREILS B - C APPAREILS B - E 1/4 (6,35) / 3/8 (9,52)
E S P A C E R E Q U I S A U T O U R D E L ’ A P P A R E I L E X T É R I E U R
1-4. CHOIX DE L’EMPLACEMENT D’INSTALLATION
• Emplacementnefavorisant pas une exposition à des ventsviolents.Si l’unité
externe est exposée au vent pendant le dégivrage, ce dernier sera plus long.
• Emplacement favorisant une bonne circulation d’air sans poussière exces-
sive.
• Emplacementne favorisant pasune exposition àla pluie ouaux rayons directs
du soleil.
• Emplacement ne générant pas de nuisance pour le voisinage (bruit de fonc-
tionnement ou pulsation d’air chaud ou froid).
• Emplacement sur un mur ou un support rigides pour éviter toute propagation
du bruit de fonctionnement ou vibration de l’appareil.
• Emplacement qui ne risque pas d’être exposé à des fuites de gaz combus-
tible.
• Lors de l’installation, pensez à xer les supports de l’appareil.
• Emplacement à 10 pi. (3 m) minimum de l’antenne TV ou radio. Le fonction-
nement du climatiseur peut interférer avec la réception des ondes radio ou
TV dans des régions où la réception est faible. Il peut s’avérer nécessaire
de brancher un amplicateur sur l’appareil concerné.
• Toujours installer l’appareil à l’horizontale.
• Installer le climatiseur dans un endroit à l’abri du vent et de la neige. Dans un
endroit soumis à de fortes chutes de neige, installer un abri, un socle et/ou
des écrans de protection.
R e m a rq u e :
Il est conseillé de faire une boucle avec le tuyau le plus près possible de l’unité
externe de façon à réduire les vibrations transmises par l’unité.
R e m a rq u e :
Si vous utilisez le climatiseur alors que la température extérieure est basse,
veillez à observer les instructions ci-dessous.
• N’installez jamais l’unité externe dans un endroit où le côté présentant
l’entrée/la sortie d’air risque d’être directement exposé au vent.
• Pourprotégerl’unité externe du vent, installez-la de façonàce que l’entrée
d’air soit face au mur.
• Pourévitertoute exposition au vent, il est recommandé d’installer un écran
de protection du côté de la sortie d’air de l’unité externe.
Pour éviter tout problème de fonctionnement, évitez d’installer le climatiseur
dans les endroits suivants :
• En présence de fuites de gaz inammable.
• En présence d’une grande quantité d’huile de machine.
• Dans les régions où l’air est très salin, comme en bord de mer.
• En présence de gaz sulfurés qui se dégagent par exemple des sources
chaudes ou des eaux usées.
• En présence d’équipements haute fréquence ou sans l.
• En présence d'émissions importantes de COV (composés organiques
volatiles),dont les composés dephtalate,le formaldéhyde etc.,quipeuvent
provoquer un craquage chimique.
(Unité : pouce (mm))
3 . Obstacles sur le devant (souferie) uniquement
En présence d’un obstacle sur le devant de l’appareil comme indiqué sur
l’illustration,il estindispensablede laisserunespace libreau-dessus, derrière
et sur les côtés de l’appareil.
2 . Devant (souferie) ouvert
Tant que l’espace quiséparel’appareilde l’obstacle est au moins équivalent
àceluiindiquésurl’illustration, l’appareil peut être installé même si des obs-
taclessetrouventderrière lui et d’un côté ou de l’autre. (Absence d’obstacle
au-dessus de l’appareil)
19-11/16 (500) ou plus
7-7/8 (200) ou plus
13-25/32 (350) ou plus
3-15/16 (100) ou plus
6 . E s p a c e d ’ e n t re t i e n
Laissez un espace pour les travaux d’entretien comme indiqué sur l’illus-
tration.
3-15/16 (100) ou plus
19-11/16 (500)
ou plus
3-15/16 (100) ou plus
Espace d’entretien
13-25/32 (350) ou plus13-25/32 (350) ou plus
19-11/16 (500) ou plus
3-15/16 (100) ou plus
(Unité : pouce (mm))
5 . O b s t a c l e s s u r l e d e v a n t , d e rri è re e t s u r l e ( s ) c ô t é ( s )
• Si vous devez installer l’appareil dans un endroit ceint de murs de type
véranda, veillez à disposer de sufsamment d’espace comme indiqué
ci-dessous.
Si ce n’est pas le cas, les performances du climatiseur risquent de
se détériorer et la consommation d’électricité pourrait augmenter.
• Si vous installez au moins deux appareils, veillez à ne pas les poser les
uns devant ou derrière les autres.
7-7/8 (200) ou plus
3-15/16 (100)
ou plus 13-25/32 (350) ou
plus
19-11/16 (500)
ou plus 19-11/16 (500) ou
plus
La hauteur de l’obstacle est inférieure ou égale à 47-1/4 (1200)
4. O b s t a c l e s s u r l e d e v a n t e t d e rri è re
L’appareil peut être utilisé en xant un guidage de sortie d’air extérieur en
option (PAC-SH96SG-E) (avec les deux côtés et le haut ouverts).
3-15/16 (100) ou plus
Guidage de sortie (PAC-SH96SG-E)
19-11/16 (500) ou plus
VG79N001H01_02Fr.indd 2 2021/07/16 9:23:18