-
30
-
F
• Be sure to confirm no operation problem on the equipment after completing the installation. If unusual
• Be sure to explain the operating methods as well as the maintenance methods of this equipment to the
• Be sure to keep the installation manual together with user’s manual at a place where it is easily accessi-
ble to the user any time. Moreover, ask the user to hand the manuals to a new user, whenever required.
• During pump down work, be sure to stop the compressor before closing ser-
If the connecting pipes are removed when the compressor is in operation and service valves are
open, air can be sucked into the refrigerant circuit which can cause anomalous high pressure result-
• In the event of refrigerant leakage during installation, be sure to ventilate the
• Electrical work must be carried out by the qualified electrician, strictly in ac-
• Make sure that earth leakage breaker and circuit breaker of appropriate ca-
Circuit breaker should be able to disconnect all poles under over current. Absence of appropriate
• Be sure to switch off the
power source in the event of installation, mainte-
If the power source is not switched off, there is a risk of electric shock, unit failure or personal injury.
• Be sure to tighten the cables securely in terminal block and relieve the ca-
re.
• Do not process, splice or modify the power cable, or share the socket with
Improper power cable or power plug can cause fire or electric shock due to poor connection, insuf-
• Do not perform any change in protective device or its setup condition yourself.
• Be sure to clamp the cables properly so that they do not touch any internal
Improper installation can cause electric shock or fire due to intrusion of dust or water.
• Be sure to use the prescribed power and connecting cables for electrical work.
• This appliance must be connected to main power source by means of a cir-
cuit breaker or switch with a contact separation of at least 3mm.
When plugging this unit, a plug conforming to the standard IEC60884-1 must be
• Be sure to connect the power source cable with power source properly.
Improper connection can cause intrusion of dust or water resulting in electric shock or fire.
• There is any obstacle which can prevent smooth air circulation from inlet and outlet side of the unit.
• Chemical substances like ammonia (organic fertilizer), calcium chloride (snow melting agent) and
omponents, unit malfunction and fire.
Aluminium fin temperature is high during heating operation. Touching fin can cause burn.
Do not touch any refrigerant pipe with your hands when the system is in operation.
During operation the refrigerant pipes become extremely hot or extremely cold depending on the op-
disconnect switch on the power source wiring in accor-
2. OUTDOOR UNIT INSTALLATION
Note as a unit designed for R32
• Do not use any refrigerant other than R32. R32 will rise to pressure about 1.6 times higher than that of
a conventional refrigerant. A cylinder containing R32 has a light blue indication mark on the top.
• Do not use a charge cylinder. The use of a charge cylinder will cause the refrigerant composition to
change, which results in performance degradation.
• In charging refrigerant, always take it out from a cylinder in the liquid phase.
• All indoor units must be models designed exclusively for R32. Check connectable indoor unit models in
a catalog, etc. (A wrong indoor unit, if connected into the system, will impair proper system operation)
1. Haulage
• Always carry or move the unit with two or more persons.
• The right hand side of the unit as viewed from the front (outlet
side) is heavier.
A person carrying the right hand side must take care of this fact.
A person carrying the left hand side must hold the handle pro-
vided on the front panel of the unit with his right hand and the
corner column section of the unit with his left hand.
CAUTION
When a unit is hauled, take care of its gravity center position which is shifted towards right hand side.
If the unit is not hauled properly, it can go off balance and fall resulting in serious injury.
2. Selecting the installation location
Select the suitable installation location where:
.noissimsnart noitarbiv yna fo eerf dna latnoziroh ,elbats eb lliw tinU •
.tinu eht fo edis teltuo dna telni morf noitalucric ria htooms tneverp nac hcihw elcatsbo on si erehT •
.tinu fo ecnanetniam dna ecivres rof ecaps hguone si erehT •
.tinu eht morf gnitareneg ria ro esion yb derehtob ton era sruobhgieN •
.stnalp ro slamina ot yltcerid wolb ton seod tinu eht fo ria teltuO •
.ylrepo
rp degrahcsid eb nac retaw niarD •
.egakael sag elbamma fl fo ksir on si erehT •
.ybraen secruos taeh rehto on era erehT •
.thgilnus ro niar ot desopxe yltcerid ton si tinU •
.maets dna tsim lio ot desopxe yltcerid ton si tinU •
dica dna )tnega gnitlem wons( edirolhc muiclac ,)rezilitref cinagro( ainomma ekil secnatsbus lacimehC •
(sulfurous acid etc.), which can harm the unit, will not generate or accumulate.
-ta ytlas ro ezeerb aes ,)sag edirolhc ,sag edihplus ekil( sesag
evisorroc ot desopxe yltcerid ton si tinU •
mosphere.
.m1 nihtiw decalp si reviecer oidar ro tes VT oN •
-piuqe rehto yb detareneg sevaw cinomrah-hgih ro/dna sevaw citengamortcele yb detceffa ton si tinU •
ments.
.teltuo tinu eht tsniaga wolb ton seod dniw gnortS •
.)noitalumucca wons diova ot noitcetorp reporp edivorp ,dellatsni fI( rucco ton od sllafwons yvaeH •
NOTE
If the unit is installed in the area where there is a possibility of strong wind or snow accumulation, the fol-
lowing measures are required.
(1) Location of strong wind
• Place the unit with its outlet side facing the wall. • Place the unit such that the direction of air from
the outlet gets perpendicular to the wind direc-
tion.
Wind
(2) Location of snow accumulation
• Install the unit on the base so that the bottom is
higher than snow cover surface.
• Install the unit under eaves or provide the roof on
site.
3. Installation space
• There must be 1 meter or larger space between the unit and the wall in at least 1 of the 4 sides.
Walls surrounding the unit from 4 sides is not acceptable. The wall height on the outlet side should
be 1200 mm or less. Refer to the following fi gure and table for details.
(mm)
NOTE
When more than one unit are installed side by side, provide a 250mm or wider interval between them
as a service space.
CAUTION
When more than one unit are installed in parallel directions, provide suffi cient inlet space so that short-
circuiting may not occur.
4. Drain piping work (If necessary)
Carry out drain piping work by using a drain elbow and a drain grommet supplied separately as acces-
sories if condensed water needs to be drained out.
(1) Install drain elbow and drain grommet.
.lairetam gnikluac etauqeda ro yttup htiw temmorg niard dna woble niard eht dnuora laeS )2(
<SRC20/25/35/40/50/60ZSX-W>
Do not put a grommet on this hole.
This is a supplementary drain hole to discharge
drain water, when a large amount of it is gathered.
CAUTION
Do not use drain elbow and drain grommet if there
is a possibility to have several consecutive days
of sub zero temperature. (There is a risk of drain
water freezing inside and blocking the drain.)
<SRC20/25/35ZSX-WA>
Do not block the drain holes when installing the
outdoor unit.
5. Installation
.esab level ta fl a no tinu eht llatsnI •
erug fi eht ni nwohs sa stlob rohcna 4 htiw sgel s’tinu eht x fi dna ecaps peek ,tinu eht gnillatsni elihW •
below. The protrusion of an anchor bolt from the foundation surface must be kept within 15mm.
313mm
Anchor bolt (M10-12) ×4 pcs.
200mm over
If drain piping work was carried
out, keep the clearance more
510mm
CAUTION
• Install the unit properly so that it does not fall over during earthquake, strong wind, etc.
•
Make sure that unit is installed on a fl at level base. Installing unit on uneven base may result in unit
malfunction.
3. PREPARATION FOR WORK
1. Removing service cover
Remove the screw. Slide service cover downwards and remove it.
2. Removing terminal cover
Remove the screw and take out terminal cover.
Heavy
RWC012A063B
Model SRC20,25,35,40,50,60ZSX-W
SRC20,25,35ZSX-WA
R32 REFRIGERANT USED
Vacuum pump adapter*
(Anti-reverse flow type)
Designed specifically for R32 or R410A
Screw
Service cove
Screw
Terminal cove
Example installation
I II III IV
Size
L1 Open 280 280 180
L2 100 75 Open Open
L3 100 80 80 80
L4 250 Open 250 Open
Inlet
(
Service
space
)
Inlet
Outlet
L3
L4
L1
L2
• This installation manual deals with an outdoor unit installation only. For an indoor unit installation, refer to page 30.
SAFETY PRECAUTIONS
-allatsni eht gnirud ti wollof yltcirts dna ylluferac ”SNOITUACERP YTEFAS“ eht daer ,noitallatsni erofeB •
tion work in order to protect yourself.
,slevel owt otni dehsiugnitsid era woleb denoitnem smeti yranoituacerp ehT •
-noc suoires ni tluser nac ,dediova ton fi ,hcihw noitautis suodrazah yllaitnetop a setacidnI
sequences such as death or severe injury.
-ni lanosrep ni tluser nac ,dediova ton fi ,hcihw noitautis suodrazah yllaitnetop a setacidnI
jury or property damage.
.snaem yna yb meht wollof yltcirts ,eroferehT .ytefas dna htlaeh ruoy tcetorp ot smeti tnatropmi eht noitnem htoB
lausunu fI .noitallatsni eht gnitelpmoc retfa tnempiuqe eht no melborp noitarepo on mr finoc ot erus eB •
noise can be heard during the test run, consult the dealer.
eht ot tnempiuqe siht fo sdohtem ecnanetniam eht sa llew sa sdohtem gnitarepo eht
nialpxe ot erus eB •
user according to the user’s manual.
-issecca ylisae si ti erehw ecalp a ta launam s’resu htiw rehtegot launam noitallatsni eht peek ot erus eB •
ble to the user any time. Moreover, ask the user to hand the manuals to a new user, whenever required.
WARNING
• Be sure to use only for residential purpose.
If this unit is installed in inferior environment such as machine shop, vehicle (like ship), warehouse,
etc., it can malfunction.
-rocca ni yletelpmoc rellatsni de fiilauq eht yb tuo deirrac eb tsum noitallatsnI •
dance with the installation manual.
Installation by non qualified person or incorrect installation can cause serious troubles such as water
leak, electric shock, fire and personal injury.
•
.krow noitallatsni gnimrofrep elihw sevolg dna selggog evitcetorp raew ot erus eB
Improper safety measures can result in personal injury.
.noitallatsni eht rof stnenopmoc de fiiceps eht dna seirossecca lanigiro eht esU •
Using parts other than those prescribed may cause water leak, electric shock, fire and personal injury.
•
Do not install the unit near the location where leakage of fl ammable gases can occur.
If leaked gases accumulate around the unit, it can cause fire resulting in property damage and per-
sonal injury.
ytisned tnaregirfer taht erus ekam ,smoor llams ni tinu eht gnillatsni nehW •
does not exceed the limit (Reference: ISO5149) in the event of leakage.
If refrigerant density exceeds the limit, consult the dealer and install the ventilation system.
Otherwise lack of oxygen can occur resulting in serious accident.
• Install the unit in a location where unit will remain stable, horizontal and free
of any vibration transmission.
Unsuitable installation location can cause the unit to fall resulting in material damage and personal injury.
.snoitcetorp ro slenap devomer htiw tinu eht nur ton oD •
Touching rotating equipments, hot surfaces or high voltage parts can cause personal injury due to
entrapment, burn or electric shock.
.23R rof yllac fiiceps dengised si tinu sihT •
Using any other refrigerant can cause unit failure and personal injury.
.erehpsomta otni 23R tnev ton oD •
R32 is a fluorinated greenhouse gas with a Global Warming Potential(GWP)=675.
dellatsni si tinu eht nehw tiucric tnaregirfer eht sretne ria o
n taht erus ekaM •
and removed.
If air enters the refrigerant circuit, the pressure in the refrigerant circuit will become too high, which
can cause burst and personal injury.
.A014R ro 23R rof sloot dna stun era fl ,sepip debircserp eht esu ot erus eB •
Using existing parts (for R22 or R407C) can cause refrigerant circuit burst resulting in unit failure and
personal injury.
-po erofeb ylreporp sepip gnitcennoc sag dna diuqil htob tcennoc ot erus eB •
erating the compressor.
Do not open the liquid and gas service valves before completing piping
work, and evacuation.
If the compressor is operated when connecting pipes are not connected and service valves are
open, air can be sucked into the refrigerant circuit which can cause anomalous high pressure result-
ing in burst or personal injury.
.hcnerw euqrot eht gnisu euqrot de fiiceps ot stun era fl eht n
ethgit ot erus eB •
Tightening flare nuts with excess torque can cause burst and refrigerant leakage after a long period.
-res gnisolc erofeb rosserpmoc eht pots ot erus eb ,krow nwod pmup gniruD •
vice valves and removing connecting pipes.
If the connecting pipes are removed when the compressor is in operation and service valves are
open, air can be sucked into the refrigerant circuit which can cause anomalous high pressure result-
ing in burst or personal injury.
eht etalitnev ot erus eb ,noitallatsni gnirud egakael tnaregirfer fo tneve eht nI •
working area properly.
If the refrigerant comes into contact with naked fl ames, poisonous gases will be produced.
-ca ni yltcirts ,naicirtcele de fiilauq eht yb tuo deirrac eb tsum krow lacirtcelE •
cordance with national or regional electricity regulations.
Incorrect installation can cause electric shock, fire or personal injury.
-ac etairporppa fo rekaerb tiucric dna rekaerb egakael htrae taht erus ekaM •
pacities are installed.
Circuit breaker should be able to disconnect all poles under over current. Absence of appropriate
breakers can cause electric shock, personal injury or property damage.
-etniam ,noitallatsni fo tneve eht ni ecruos rewop eht ffo hctiws ot erus eB •
nance or service.
If the power source is not switched off, there is a risk of electric shock, unit failure or personal injury.
-ac eht eveiler dna kcolb lanimret ni yleruces selbac eht nethgit ot erus eB •
bles properly to prevent overloading the terminal blocks.
Loose connections or cable mountings can cause anomalous heat production or fi re.
htiw tekcos eht erahs ro ,elbac rewop eht yfidom ro ecilps ,ssecorp ton oD •
other power plugs.
Improper power cable or power plug can cause fi re or electric shock due to poor connection, insuf-
ficient insulation or over-current.
.flesruoy noitidnoc putes sti ro ecived
evitcetorp ni egnahc yna mrofrep ton oD •
Changing protective device specifications can cause electric shock, fire or burst.
lanretni yna hcuot ton od yeht taht os ylreporp selbac eht pmalc ot erus eB •
component of the unit.
If cables touch any internal component, it can cause overheating and fi re.
.ylreporp revoc ecivres llatsni ot erus eB •
Improper installation can cause electric shock or fire due to intrusion of dust or water.
.krow lacirtcele rof selbac gnitcennoc dna rewop debircserp eht esu ot erus eB •
Using improper cables can cause electric leak or fire.
-ric a fo snaem yb ecruos rewop niam ot detcennoc eb tsum ecnailppa sihT •
cuit breaker or switch with a contact separation of at least 3mm.
Improper electrical work can cause unit failure or personal injury.
•
eb tsum 1-48806CEI dradnats eht ot gnimrofnoc gulp a ,tinu siht gniggulp nehW
used.
Using improper plug can cause electric shock or fi re.
.ylreporp ecruos rewop htiw elbac ecruos rewop eht tcennoc ot erus eB •
Improper connection can cause intrusion of dust or water resulting in electric shock or fire.
CAUTION
.dnah yb tinu eht gniyrrac nehw erac ekaT •
If the unit weight is more than 20kg, it must be carried by two or more persons.
.eldnah yrrac eht esu syawlA .sparts citsalp eht yb tinu eht yrrac ton oD
slamina llams dna stcesni erehw noitacol a ni tinu roodtuo eht llatsni ton oD •
can inhabit.
Insects and small animals can enter the electrical parts and cause damage resulting in fi re or per-
sonal injury. Instruct the user to keep the surroundings clean.
ecaps hguone si ereht taht erus ekam ,thgieh ta dellatsni si tinu roodtuo eht fI •
for installation, maintenance and service.
Insufficient space can result in personal injury due to falling from the height.
yb derehtob era sruobhgien erehw noitacol eht raen tinu eht llats
ni ton oD •
noise or air generating from the unit.
It can affect surrounding environment and cause a claim.
evisorroc ot desopxe yltcerid si tinu erehw snoitacol eht ni llatsni ton oD •
gases (like sulphide gas, chloride gas), sea breeze or salty atmosphere.
It can cause corrosion of heat exchanger and damage to plastic parts.
citengamortcele etareneg taht stnempiuqe eht ot esolc tinu eht llatsni ton oD •
waves and/or high-harmonic waves.
Equipment such as inverters, standby generators, medical high frequency equipments and telecom-
munication equipments can affect the system, and cause malfunctions and breakdowns.
sti tcurtsbo dna ,tnempiuqe noitacinummocelet dna tnempiuqe lacidem tceffa osla nac metsys ehT
function or cause jamming.
:erehw snoitacol eht ni tinu eht llatsni ton oD •
.ybraen secruos taeh era erehT •
.thgilnus ro niar
ot desopxe yltcerid si tinU •
.tinu eht fo edis teltuo dna telni morf noitalucric ria htooms tneverp nac hcihw elcatsbo yna si erehT •
.nehctik sa hcus maets dna tsim lio ot desopxe yltcerid si tinU •
dna )tnega gnitlem wons( edirolhc muiclac ,)rezilitref cinagro( ainomma ekil secnatsbus lacimehC •
acid (sulfurous acid etc.), which can harm the unit, will generate or accumulate.
.ylreporp degrahcsid eb ton nac retaw niarD •
.m1 nihtiw decalp si reviecer oidar ro tes VT •
.m0
001 naht erom si level aes evoba thgieH •
It can cause performance degradation, corrosion and damage of components, unit malfunction and fi re.
.ylreporp slairetam gnikcap lla fo esopsiD •
Packing materials contain nails and wood which can cause personal injury.
.noitacoffus fo ksir eht diova ot nerdlihc morf yawa gabylop eht peeK
.tinu roodtuo eht no gnihtyna tup ton oD •
Object may fall causing property damage or personal injury.
.tinu roodtuo eht fo n fi munimula eht hcuot ton oD •
Aluminium fin temperature is high during heating operation. Touching fi n can cause burn.
•
.noitarepo ni si metsys eht nehw sdnah ruoy htiw epip tnaregirfer yna hcuot ton oD
During operation the refrigerant pipes become extremely hot or extremely cold depending on the op-
erating condition. Touching pipes can cause personal injury like burn (hot/cold).
r
otalosi llatsnI • or disconnect switch on the power source wiring in accor-
dance with the local codes and regulations.
The isolator should be locked in OFF state in accordance with EN60204-1.
2. OUTDOOR UNIT INSTALLATION
Note as a unit designed for R32
• Do not use any refrigerant other than R32. R32 will rise to pressure about 1.6 times higher than that of
a conventional refrigerant. A cylinder containing R32 has a light blue indication mark on the top.
• Do not use a charge cylinder. The use of a charge cylinder will cause the refrigerant composition to
change, which results in performance degradation.
• In charging refrigerant, always take it out from a cylinder in the liquid phase.
• All indoor units must be models designed exclusively for R32. Check connectable indoor unit models in
a catalog, etc. (A wrong indoor unit, if connected into the system, will impair proper system operation)
1. Haulage
• Always carry or move the unit with two or more persons.
• The right hand side of the unit as viewed from the front (outlet
side) is heavier.
A person carrying the right hand side must take care of this fact.
A person carrying the left hand side must hold the handle pro-
vided on the front panel of the unit with his right hand and the
corner column section of the unit with his left hand.
CAUTION
When a unit is hauled, take care of its gravity center position which is shifted towards right hand side.
If the unit is not hauled properly, it can go off balance and fall resulting in serious injury.
2. Selecting the installation location
Select the suitable installation location where:
• Unit will be stable, horizontal and free of any vibration transmission.
• There is no obstacle which can prevent smooth air circulation from inlet and outlet side of the unit.
• There is enough space for service and maintenance of unit.
• Neighbours are not bothered by noise or air generating from the unit.
• Outlet air of the unit does not blow directly to animals or plants.
• Drain water can be discharged properly.
• There is no risk of flammable gas leakage.
• There are no other heat sources nearby.
• Unit is not directly exposed to rain or sunlight.
• Unit is not directly exposed to oil mist and steam.
• Chemical substances like ammonia (organic fertilizer), calcium chloride (snow melting agent) and acid
(sulfurous acid etc.), which can harm the unit, will not generate or accumulate.
• Unit is not directly exposed to corrosive gases (like sulphide gas, chloride gas), sea breeze or salty at-
mosphere.
• No TV set or radio receiver is placed within 1m.
• Unit is not affected by electromagnetic waves and/or high-harmonic waves generated by other equip-
ments.
• Strong wind does not blow against the unit outlet.
• Heavy snowfalls do not occur (If installed, provide proper protection to avoid snow accumulation).
NOTE
If the unit is installed in the area where there is a possibility of strong wind or snow accumulation, the fol-
lowing measures are required.
(1) Location of strong wind
• Place the unit with its outlet side facing the wall.
(2) Location of snow accumulation
• Install the unit on the base so that the bottom is
higher than snow cover surface.
• Install the unit under eaves or provide the roof on
site.
3. PREPARATION FOR WORK
1. Removing service cover
Remove the screw. Slide service cover downwards and remove it.
RWC012A063B
Model SRC20,25,35,40,50,60ZSX-W
SRC20,25,35ZSX-WA
R32 REFRIGERANT USED
1. ACCESSORIES AND TOOLS
Locally procured parts Tools for installation work
(a) Anchor bolt(M10-M12)×4 pcs. Plus headed driver Spanner wrench Vacuum pump*
(b) Putty Knife Torque wrench [14.0-62.0N•m(1.4-6.2kgf•m)] Gauge manifold *
(c) Electrical tape Saw Wrench key (Hexagon) [4mm] Charge hose *
*
Not included for SRC20, 25, or 35ZSX-WA
.
(d) Connecting pipe
Tape measure Flaring tool set *
Vacuum pump adapter*
(Anti-reverse fl ow type)
(e) Connecting cable
(f) Power cable Pipe cutter Flare adjustment gauge Gas leak detector *
(g) Clamp and screw (for fi nishing work)
*
Designed specifi cally for R32 or R410A
Standard accessories
(Supplied with outdoor unit)
Q’ty
(1)
Drain grommet
4
(2)
Drain elbow
1
'20 • SRF-DB-310
-
39
-
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