Mitsubishi Heavy Industries SRK63ZSPR-S, Technical Manual

-

-

 '17 • SRK-T-206

Wires for connecting indoor and outdoor units

Exterior tape

Gas piping

Insulation

Liquid piping

Band (procured locally)

Pipe cover (procured locally)

8) Heating and condensation prevention

Take 

care 

so 

that 

installed 

pipes 

may 

not 

touch 

components 

within 

a 

unit.

If 

pipes 

touch 

internal 

components, 

abnormal 

sounds 

and/or 

vibrations.

4) On-site piping work

IMPORTANT

How to remove the side cover

Remove 

the 

screw 

of 

the 

side 

cover 

and 

remove 

to 

the 

front.

A

B

Flared 

pipe 

end 

: 

A

 (mm)

ø6.35

ø12.7

ø15.88

Copper 

pipe 

outer diameter

      0 A     –04

9.1

16.6

19.7

ø6.35

ø12.7

ø15.88

Copper 

pipe 

outer diameter

0

-

0.5

1.

0

-

1.5

Copper 

pipe 

protrusion 

for 

flaring 

: 

B 

(mm)

In 

the 

case 

of 

a 

rigid 

(clutch) 

type

With 

an 

R410A 

tool

With 

a 

conventional 

tool

CAUTION

Do 

not 

apply 

force 

beyond 

proper 

fastening 

torque 

in 

tightening 

the 

flare 

nut.

Tightening angle (

°

)

Tightening torque (N·m)

ø6.35 (1/4")

ø12.7 (1/2")

ø15.88 (5/8")

Recommended length of a tool handle (mm)

Service valve size (mm)

5) Air tightness test

Gas side  service valve

Check joint

Pressurize

Close

Outdoor unit

Indoor unit

<Work flow>

6) Evacuation

Pay attention to the following points in addition to the above for the R410A and compatible machines.

Air tightness test completed

Fill refrigerant

Vacuum gauge check

Vacuuming completed

Vacuuming begins

3) 

Refrigerant 

pipe 

wall 

thickness 

and 

material

NOTE

*Phosphorus deoxidized seamless copper pipe ICS 23.040.15, ICS 77.150.30

ø6.35

0.8

O-type pipe

ø12.7

0.8

O-type pipe

ø15.88

1.0

O-type pipe

Pipe diameter [mm]

Minimum pipe wall thickness [mm]

Pipe material*

UÊ

-iiVÌÊ

ÀivÀˆ}iÀ>˜ÌÊ

«ˆ«iÃÊ

œvÊ

̅iÊ

Ì>LiÊ

ŜܘÊ

œ˜Ê

̅iÊ

Àˆ}…ÌÊ

Ü>Ê

̅ˆVŽ˜iÃÃÊ

>˜`Ê

“>ÌiÀˆ>Ê

>ÃÊ

ëiVˆvˆi`Ê

for 

each 

pipe 

size.

Although outdoor and indoor units themselves have been tested for air tightness at the factory, check the connecting pipes afte

r the installation work for air tightness from the service valve’s 

check joint equipped on the outdoor unit side. While conducting a test, keep the service valve shut all the time. a) 

Raise 

the 

pressure 

to 

0.5MPa, 

and 

then 

stop. 

Leave 

it 

for 

five 

minutes 

to 

see 

if 

the 

pressure 

drops.

b) 

Then 

raise 

the 

pressure 

to 

1.5MPa, 

and 

stop. 

Leave 

it 

for 

five 

more 

minutes 

to 

see 

if 

the 

pressure 

drops.

c) 

Then 

raise 

the 

pressure 

to 

the 

specified 

level 

(4.15MPa), 

and 

record 

the 

ambient 

temperature 

and 

the 

pressure.

d) 

If 

no 

pressure 

drop 

is 

observed 

with 

an 

installation 

pressurized 

to 

the 

specified 

level 

and 

left 

for 

about 

one 

day, 

it 

is 

acceptable. 

When 

the 

ambient 

temperature 

fall 

1 

C, 

the 

pressure 

also 

fall 

approximately 

0.01MPa. 

The 

pressure, 

if 

changed, 

should 

be 

compensated 

for.

e) 

If 

a 

pressure 

drop 

is 

observed 

in 

checking 

e) 

and 

a) 

– 

d), 

a 

leak 

exists 

somewhere. 

Find 

a 

leak 

by 

applying 

bubble 

test 

liquid 

to 

welded 

parts 

and 

flare 

joints 

and 

repair 

it. 

After 

repair, 

conduct 

an 

air 

tightness 

test 

again.

In 

conducting 

an 

air 

tightness 

test, 

use 

nitrogen 

gas 

and 

pressurize 

the 

system 

with 

nitrogen 

gas 

from 

the 

gas 

side. 

Do 

not 

use 

a 

medium 

other 

than 

nitrogen 

gas 

under 

any 

circumstances.

UÊ

>ÀÀÞÊ

œÕÌÊ

̅iÊ

œ˜Ê

ÈÌiÊ

«ˆ«ˆ˜}Ê

ܜÀŽÊ

܈̅Ê

̅iÊ

ÃiÀۈViÊ

Û>ÛiÊ

vՏÞÊ

VœÃi`°

UÊ

ˆÛiÊ

ÃÕvvˆVˆi˜ÌÊ

«ÀœÌiV̈œ˜Ê

̜Ê

>Ê

«ˆ«iÊ

i˜`Ê

­Vœ“«ÀiÃÃi`Ê

>˜`Ê

L>âi`]Ê

œÀÊ

܈̅Ê

>˜Ê

adhesive 

tape) 

so 

that 

water 

or 

foreign 

matters 

may 

not 

enter 

the 

piping.

UÊ

 i˜`Ê

>Ê

«ˆ«iÊ

̜Ê

>Ê

À>`ˆÕÃÊ

>ÃÊ

>À}iÊ

>ÃÊ

«À>V̈V>Ê

­,£ä

0-

R150). 

Do 

not 

bend 

a 

pipe 

repeatedly 

to 

correct 

its 

form.

UÊ

>ÀiÊ

Vœ˜˜iV̈œ˜Ê

ˆÃÊ

ÕÃi`Ê

LiÌÜii˜Ê

̅iÊ

՘ˆÌÊ

>˜`Ê

ÀivÀˆ}iÀ>˜ÌÊ

«ˆ«i°Ê

>ÀiÊ

>Ê

«ˆ«iÊ

>vÌiÀÊ

engaging 

a 

flare 

nut 

onto 

it. 

Flare 

dimensions 

for 

R410A 

are 

different 

from 

those 

for 

conventional 

R407C. 

Although 

we 

recommend 

the 

use 

of 

flaring 

tools 

designed 

specifically 

for 

R410A, 

conventional 

flaring 

tools 

can 

also 

be 

used 

by 

adjusting 

the 

measurement 

of 

protrusion 

B 

with 

a 

protrusion 

control 

gauge.

UÊ

/…iÊ

«ˆ«iÊ

ŜՏ`Ê

LiÊ

>˜V…œÀi`Ê

iÛiÀÞÊ

£°x“Ê

œÀÊ

iÃÃÊ

̜Ê

ˆÃœ>ÌiÊ

̅iÊ

ۈLÀ>̈œ˜°Ê

UÊ

/ˆ}…Ìi˜Ê

̅iÊ

v>ÀiÊ

œˆ˜ÌÊ

ÃiVÕÀiÞÊ

܈̅Ê

>Ê

`œÕLiÊ

ë>˜˜iÀ°Ê

UÊ

/œÊ

«ÀiÛi˜ÌÊ

>Ê

`ˆvviÀi˜ÌÊ

œˆÊ

vÀœ“Ê

i˜ÌiÀˆ˜}]Ê

ÕÃiÊ

`i`ˆV>Ìi`Ê

̜œÃ]Ê

iÌV°Ê

̜Ê

i>V…Ê

ÀivÀˆ}iÀ>˜ÌÊ

ÌÞ«i°Ê

1˜`iÀÊ

˜œÊ

VˆÀVՓÃÌ>˜ViÃÊ

“ÕÃÌÊ

a 

gauge 

manifold 

and 

a 

charge 

hose 

in 

particular 

be 

shared 

with 

other 

refrigerant 

types 

(R22, 

R407C, 

etc.).

UÊ

1ÃiÊ

>Ê

VœÕ˜ÌiÀvœÜÊ

«ÀiÛi˜Ìˆœ˜Ê

>`>«ÌiÀÊ

̜Ê

«ÀiÛi˜ÌÊ

Û>VÕՓÊ

«Õ“«Ê

œˆÊ

vÀœ“Ê

i˜ÌiÀˆ˜}Ê

̅iÊ

ÀivÀˆ}iÀ>˜ÌÊ

ÃÞÃÌi“°

UÊ

/…ˆÃÊ՘ˆÌÊVœ˜Ì>ˆ˜ÃÊv>V̜ÀÞÊV…>À}i`ÊÀivÀˆ}iÀ>˜ÌÊVœÛiÀˆ

˜}Ê£x“ÊœvÊÀivÀˆ}iÀ>˜ÌÊ«ˆ«ˆ˜}Ê>˜`Ê>``ˆÌˆœ˜>ÊÀivÀˆ}iÀ>˜ÌÊV…>À}i

ʜ˜Ê

the installation site is not required for an installation with up to 15m refrigerant piping.

When refrigerant piping exceeds 15m, additionally charge an amount calculated from the pipe length and the above  table for the portion in excess of 15m.

UÊ

vÊ>˜Êi݈Ã̈˜}Ê«ˆ«iÊÃÞÃÌi“ʈÃÊÕÃi`]ÊÀiµÕˆÀi`ÊÀivÀˆ}iÀ>˜ÌÊV…>À}i

ÊۜÕ“iÊ܈ÊÛ>ÀÞÊ`i«i˜`ˆ˜}ʜ˜Ê̅iʏˆµÕˆ`Ê«ˆ«iÊÈâi°ÊœÀÊ

vÕÀ̅iÀʈ˜vœÀ“>̈œ˜]ÊÃiiʺx°Ê1/</" Ê"Ê8-/ Ê** °»

* When an additional charge volume calculation result is negative, it is not necessary to charge refrigerant additionally.

UÊ

œÀÊ>˜Êˆ˜ÃÌ>>̈œ˜Ê“i>ÃÕÀˆ˜}Ê£x“ÊœÀÊŜÀÌiÀʈ˜Ê«ˆ«iʏi˜}̅]ÊV

…>À}iÊ̅iÊÀivÀˆ}iÀ>˜ÌÊۜÕ“iÊV…>À}i`ÊvœÀÊň«“i˜ÌÊ>ÌÊ

the factory, when you recharge refrigerant after servicing etc.

Fix both liquid and gas service valves at the valve main bodies as illustrated on the right, and then fasten them,  applying appropriate fastening torque.

Select 

pipes 

having 

a 

wall 

thickness 

larger 

than 

the 

specified 

minimum 

pipe 

thickness.

14

-

18

49

-

61

68

-

82

45

-

60

30

-

45

15

-

20

150

250

300

1

2

Run the vacuum pump for at least one hour after the vacuum  gauge shows –0.1MPa or lower. (–76cmHg or lower)

When 

the 

system 

has 

remaining 

moisture 

inside 

or 

a 

leaky 

point, 

the 

vacuum 

gauge 

indicator 

will 

rise.

Check 

the 

system 

for 

a 

leaky 

point 

and 

then 

draw 

air 

to 

create 

a 

vacuum 

again.

Confirm that the vacuum gauge indicator does not rise even if  the system is left for one hour or more.

(Gas side)

Charge hose (Designed specifically for R410A)

Compound pressure gauge

Pressure gauge

Gauge manifold (Designed specifically for R410A)

Handle Hi

Vacuum pump

Vacuum pump adapter (Anti-reverse flow type) (Designed specifically for R410A)

Charge hose (Designed specifically for R410A)

Check joint 

-0.1MPa

(-76cmHg)

H

an

dl

e 

Lo

Service valve

 Service valve

(Liquid side)

Service valve cap

Service valve cap

Service valve cap tightening torque (N·m)

Check joint blind nut tightening torque (N·m)

ø6.35 (1/4")

ø12.7 (1/2")

ø15.88 (5/8")

20

-

30

25

-

35

30

-

40

10

-

12

Service valve size

(mm)

Securely tighten the service valve cap and the check joint blind nut after adjustment.

(1) 

Dress refrigerant pipes (both gas and liquid pipes) for heat insulation and prevention of dew condensation.

UÊ

“«Àœ«iÀÊ

…i>ÌÊ

ˆ˜ÃՏ>̈œ˜É>˜Ìˆ‡`iÜÊ

`ÀiÃȘ}Ê

V>˜Ê

ÀiÃՏÌÊ

ˆ˜Ê

>Ê

Ü>ÌiÀÊ

i>ŽÊ

œÀÊ

`Àˆ««ˆ˜}Ê

V>ÕȘ}Ê

`>“>}iÊ

̜Ê

…œÕÃi…œ`Ê

ivviVÌÃ]Ê

iÌV°

­Ó®Ê

1ÃiÊ>ʅi>Ìʈ˜ÃՏ>̈˜}ʓ>ÌiÀˆ>Ê̅>ÌÊV>˜Ê܈̅ÃÌ>˜`Ê£Óä

℃

 or a higher temperature. Poor heat insulating capacity can cause heat insulation problems or cable 

deterioration.

UÊ

Ê

}>ÃÊ

«ˆ«iÃÊ

“ÕÃÌÊ

LiÊ

ÃiVÕÀiÞÊ

…i>ÌÊ

ˆ˜ÃՏ>Ìi`Ê

ˆ˜Ê

œÀ`iÀÊ

̜Ê

«ÀiÛi˜ÌÊ

`>“>}iÊ

vÀœ“Ê

`Àˆ««ˆ˜}Ê

Ü>ÌiÀÊ

̅>ÌÊ

Vœ“iÃÊ

vÀœ“Ê

̅iÊ

Vœ˜`i˜Ã>̈œ˜Ê

vœÀ“i`Ê

œ˜Ê

̅i“Ê

`ÕÀˆ˜}Ê

>Ê

Vœœˆ˜}Ê

operation 

or 

personal 

injury 

from 

burns 

because 

their 

surface 

can 

reach 

quite 

a 

high 

temperature 

due 

to 

discharged 

gas 

flowing 

inside 

during 

a 

heating 

operation.

UÊ

7À>«Ê

ˆ˜`œœÀÊ

՘ˆÌýÊ

v>ÀiÊ

œˆ˜ÌÃÊ

܈̅Ê

…i>ÌÊ

ˆ˜ÃՏ>̈˜}Ê

«>ÀÌÃÊ

­«ˆ«iÊ

VœÛiÀ®Ê

vœÀÊ

…i>ÌÊ

ˆ˜ÃՏ>̈œ˜Ê

­LœÌ…Ê

}>ÃÊ

>˜`Ê

ˆµÕˆ`Ê

«ˆ«iî°

UÊ

ˆÛiÊ

…i>ÌÊ

ˆ˜ÃՏ>̈œ˜Ê

̜Ê

LœÌ…Ê

}>ÃÊ

>˜`Ê

ˆµÕˆ`Ê

È`iÊ

«ˆ«iðÊ

 Õ˜`iÊ

>Ê

…i>ÌÊ

ˆ˜ÃՏ>̈˜}Ê

“>ÌiÀˆ>Ê

>˜`Ê

>Ê

«ˆ«iÊ

̈}…̏ÞÊ

̜}i̅iÀÊ

ÜÊ

̅>ÌÊ

˜œÊ

}>«ÃÊ

“>ÞÊ

LiÊ

ivÌÊ

LiÌÜii˜Ê

̅i“Ê

>˜`Ê

wrap 

them 

together 

with 

a 

connecting 

cable 

by 

a 

dressing 

tape.

UÊ

Both 

gas 

and 

liquid 

pipes 

need 

to 

be 

dressed 

with 

20mm 

or 

thicker 

heat 

insulation 

materials 

above 

the 

ceiling 

where 

relative 

humidity 

exceeds 

70%.

(1) 

Calculate a required refrigerant charge volume from the following table.

Formula to calculate the volume of additional refrigerant required

7) Additional refrigerant charge

Additional charge volume (g) = { Main length (m) – Factory charged volume 15 (m) } x 20 (g/m) 

 Model 63(21)

Additional charge volume (g) = { Main length (m) – Factory charged volume 15 (m) } x 25 (g/m) 

 Model 71(24), 80(28)

20

25

25

1.55

1.80

1.90

15

15

15

Model 63(21)

Model 71(24)

Model 80(28)

Put down the refrigerant volume calculated from the pipe length onto the caution label attached  on the service panel.

UÊ

-ˆ˜ViÊ,{£äÊÀivÀˆ}iÀ>˜ÌʓÕÃÌÊLiÊV…>À}i`ʈ˜Ê̅iʏˆµÕˆ`Ê«…>Ãi]ÊÞ

œÕÊŜՏ`ÊV…>À}iʈÌʎii«ˆ˜}Ê̅iÊVœ˜Ì>ˆ˜iÀÊ

cylinder upside down or using a refrigerant cylinder equipped with a siphon tube.

UÊ

…>À}iÊÀivÀˆ}iÀ>˜ÌÊ>Ü>ÞÃÊvÀœ“Ê̅iʏˆµÕˆ`ÊÈ`iÊÃiÀۈViÊ«œÀÌÊ܈

̅Ê̅iÊÃiÀۈViÊÛ>ÛiÊÅÕÌ°Ê7…i˜ÊޜÕÊvˆ˜`ʈÌÊ

difficult to charge a required amount, fully open the outdoor unit valves on both liquid and gas sides and  charge refrigerant from the gas (suction) side service port, while running the unit in the cooling mode. In  doing so, care must be taken so that refrigerant may be discharged from the cylinder in the liquid phase  all the time. When the cylinder valve is throttled down or a dedicated conversion tool to change liquid  phase refrigerant into mist is used to protect the compressor, however, adjust charge conditions so that  refrigerant will gasify upon entering the unit.

UÊ

˜ÊV…>À}ˆ˜}ÊÀivÀˆ}iÀ>˜Ì]Ê>Ü>ÞÃÊV…>À}iÊ>ÊV>VՏ>Ìi`ÊۜÕ“iÊLÞ

ÊÕȘ}Ê>ÊÃV>iÊ̜ʓi>ÃÕÀiÊ̅iÊV…>À}iÊ

volume.

UÊ

7…i˜ÊÀivÀˆ}iÀ>˜ÌʈÃÊV…>À}i`Ê܈̅Ê̅iÊ՘ˆÌÊLiˆ˜}ÊÀ՘]ÊVœ“«iÌiÊ>

ÊV…>À}iʜ«iÀ>̈œ˜Ê܈̅ˆ˜ÊÎ䓈˜ÕÌið

Running the unit with an insufficient quantity of refrigerant for a long time can cause a compressor failure.

(2) 

Charging refrigerant

NOTE

Additional charge volume (g)  per meter of refrigerant piping 

(liquid pipe ø6.35)

Refrigerant volume charged  for shipment at the factory

(kg)

Installation’s pipe length (m)  covered without additional  refrigerant charge

The screw of the  side cover is  tightened securely.

Side 

cover

Do not hold the valve cap area with a spanner.

RCR012A200C

4. ELECTRICAL WIRING WORK

For details of electrical cabling, refer to the indoor unit installation manual.

H 05 R N R 4or5 G

1.5

Harmonized cable type 300/500 volts Natural-and/or synth. rubber wire insulation Polychloroprene rubber conductors insulation Stranded  core Number of conductors One conductor of the cable is the earth conductor  (yellow/green) Section of copper wire (mm

2

)

H05RNR4G1.5 (Example) or 245IEC57

Electrical installation work must be performed by an electrical installation service provider  qualified by a power provide

r of the country.

Electrical installation work must be executed according to the technical standards and other regulations applicable to electric

al installations in the country.

UÊ

œÊ˜œÌÊÕÃiÊ>˜ÞÊ«œÜiÀÊV>Liʏˆ}…ÌiÀÊ̅>˜Êœ˜iÊëiVˆvˆi`ʈ˜Ê«>Ài

˜Ì…iÃiÃÊvœÀÊi>V…ÊÌÞ«iÊLiœÜ°

UÊ

LÀ>ˆ`i`ÊVœÀ`Ê­Vœ`iÊ`iÈ}˜>̈œ˜ÊÈäÓ{xÊÊx£®

UÊ

œÀ`ˆ˜>ÀÞÊ̜Õ}…ÊÀÕLLiÀÊÅi>̅i`ÊVœÀ`Ê­Vœ`iÊ`iÈ}˜>̈

œ˜ÊÈäÓ{xÊÊxή

UÊ

v>ÌÊÌ܈˜Ê̈˜ÃiÊVœÀ`Ê­Vœ`iÊ`iÈ}˜>̈œ˜ÊÈäÓÓÇÊÊ{£®

Ê

1ÃiÊ«œÞV…œÀœ«Ài˜iÊÅi>̅i`Êvi݈LiÊVœÀ`Ê­Vœ`iÊ`iÈ}˜>̈

œ˜ÊÈäÓ{xÊxÇ®ÊvœÀÊ«œÜiÀÊ

cables of parts of appliances for outdoor use.

UÊ

ÀœÕ˜`Ê̅iÊ՘ˆÌ°ÊœÊ˜œÌÊVœ˜˜iVÌÊ̅iÊ}ÀœÕ˜`ˆ˜}Ê܈ÀiÊ̜Ê>Ê}>ÃÊ«ˆ

«i]ÊÜ>ÌiÀÊ«ˆ«i]ʏˆ}…̘ˆ˜}ÊÀœ`Ê

or telephone grounding wire.

If improperly grounded, an electric shock or malfunction may result.

UÊ

Ê}ÀœÕ˜`ˆ˜}Ê܈ÀiʓÕÃÌÊLiÊVœ˜˜iVÌi`ÊLivœÀiÊVœ˜˜iV̈˜}Ê̅iÊ«œÜi

ÀÊV>Li°Ê*ÀœÛˆ`iÊ>Ê

grounding wire longer than the power cable.

UÊ

/…iʈ˜ÃÌ>>̈œ˜ÊœvÊ>˜Êˆ“«ÕÃiÊ܈̅ÃÌ>˜`ˆ˜}ÊÌÞ«iÊi>À̅ʏi>Ž>}i

ÊLÀi>ŽiÀʈÃʘiViÃÃ>ÀÞ°ÊÊÊÊÊÊÊÊÊÊÊ

A failure to install an earth leakage breaker can result in an accident such as an electric  shock or a fire.

UÊ

œÊ˜œÌÊÌÕÀ˜Êœ˜Ê̅iÊ«œÜiÀÊ՘̈Ê̅iÊiiVÌÀˆV>ÊܜÀŽÊˆÃÊVœ“«iÌi

`°

UÊ

œÊ˜œÌÊÕÃiÊ>ÊVœ˜`i˜ÃˆÛiÊV>«>VˆÌœÀÊvœÀÊ«œÜiÀÊv>V̜Àʈ“«ÀœÛi“i

˜ÌÊ՘`iÀÊ>˜ÞÊVˆÀVՓÃÌ>˜ViðÊ

(It dose not improve power factor, while it can cause an abnormal overheat accident)

UÊ

œÀÊ«œÜiÀÊÜÕÀViÊV>LiÃ]ÊÕÃiÊVœ˜`ՈÌð

UÊ

œÊ˜œÌʏ>ÞÊiiVÌÀœ˜ˆVÊVœ˜ÌÀœÊV>LiÃÊ­Ài“œÌiÊVœ˜ÌÀœÊ>˜`ÊÈ}˜>

ˆ˜}Ê܈ÀiîÊ

and other cables together outside the unit. Laying them together can  result in the malfunctioning or a failure of the unit due to electric noises.

UÊ

>ÃÌi˜Ê̅iÊV>LiÃÊÜÊ̅>ÌÊ̅œÃiʓ>ÞʘœÌÊ̜ÕV…Ê̅iÊ«ˆ«ˆ˜}]ÊiÌV°

UÊ

7…i˜ÊV>LiÃÊ>ÀiÊVœ˜˜iVÌi`]ʓ>ŽiÊÃÕÀiÊ̅>ÌÊ>ÊiiVÌÀˆV>ÊV

œ“«œ˜i˜ÌÃÊ

within the electrical component box are free of loose connector coupling  or terminal connection and then attach the cover securely. (Improper  cover attachment can result in malfunctioning or a failure of the unit, if  water penetrates into the box.)

UÊ

 iÛiÀÊÕÃiÊ>Êňi`ÊV>Li°

UÊ

-,‡<,‡-]Ê8‡<,‡-Ê>˜`Ê-,‡9,‡-ÊVœ“«ˆiÃÊ܈̅Ê̅iÊ,Ê ­i“>˜`Ê,i뜘Ãiʘ>Lˆ˜}ÊiۈViîÊÃÌ>˜`>À`Ê-É <-{Çxx°Î°£Ê>˜`Ê

supports demand response modes 1, 2, and 3 (DRM1, 2, and 3). Since  the air-conditioner limits the electric power or energy by receiving the  DRED input signal, the sense of cooling operation or heating operation  may deteriorate over time. The outdoor unit of this air-conditioner is 

CAUTION

Interconnecting and

grounding wires

(minimum)

Switch breaker

Over current protector

rated capacity

Power source

(minimum)

15A, 30mA, 0.1sec or less

20A, 30mA, 0.1sec or less

30A

30A

16A

20A

2.0mm

2

2.5mm

2

1.5mm

2

Ê8Ê{

1.5mm

2

Ê8Ê{

Earth leakage breaker

Phase

Single-phase

Single-phase

Model 63(21)

Model 71(24), 80(28)

UÊ

/…iÊëiVˆvˆV>̈œ˜ÃÊŜܘʈ˜Ê̅iÊ>LœÛiÊÌ>LiÊ>ÀiÊvœÀÊ՘ˆÌÃÊ܈

̅œÕÌʅi>ÌiÀðʜÀÊ՘ˆÌÃÊ܈̅ʅi>ÌiÀÃ]ÊÀiviÀÊ̜Ê̅iʈ˜ÃÌ>>̈

œ˜Ê

instructions or the construction instructions of the indoor unit.

UÊ

-܈ÌV…}i>ÀʜÀʈÀVՈÌÊLÀi>ŽiÀÊV>«>VˆÌÞÊ܅ˆV…ʈÃÊV>VՏ>Ìi

`ÊvÀœ“Ê“>݈“Õ“ÊœÛiÀÊVÕÀÀi˜ÌÊŜՏ`ÊLiÊV…œÃi˜Ê>œ˜}Ê̅iÊ

regulations in each country.

UÊ

/…iÊV>LiÊëiVˆvˆV>̈œ˜ÃÊ>ÀiÊL>Ãi`ʜ˜Ê̅iÊ>ÃÃՓ«Ìˆœ˜Ê̅>ÌÊ>ʓi

Ì>ÊœÀÊ«>Ã̈VÊVœ˜`ՈÌʈÃÊÕÃi`Ê܈̅ʘœÊ“œÀiÊ̅>˜Ê̅ÀiiÊV>LiÃÊ

contained in a conduit and a voltage drop is 2%.  For an installation falling outside of these conditions, follow the internal  cabling regulations. Adapt it to the regulation in effect in each country.

Switchgear or Circuit Breaker

Model SRC-ZR-S

Model SRC-ZRA-S, DXC-ZRA-S, SRC-YRA-S

<T

able of pipe size restrictions>

◎

: Standard pipe size

○

\Ê1Ã>LiÊÊÊ

△

: Restricted to shorter pipe length limits

Additional charge volume (g) =  {Main pipe length (m) 

-

 Length covered without additional 

V…>À}iÊŜܘʈ˜Ê̅iÊÌ>LiÊ­“®PÊ8Ê``ˆÌˆœ˜>ÊV…>À}iÊۜÕ“iÊ

per meter of pipe shown in the table (g/m) 

Formula to calculate additional charge volume

NO

Are the existing units our products?

NO

NO

NO

NO

NO

NO

Is the existing pipe system to reuse free of corrosion, flaws or dents?

Repair the damaged parts.

Remove those branches.

Repair the damaged parts.

Check the pipe system for air tightness on the site.

Repair the damaged parts.

No loose pipe supports

NO

9-

ST

AR

T

The existing pipe system is reusable.

The existing pipe system is not reusable. Install a new pipe system.

9-

9-

9-

9-

9-

Are an outdoor unit and an indoor unit connected to the  existing pipe system to reuse?

Is the unit to install in the existing pipe system a  twin-triple-double-twin model?

Is the existing pipe system to reuse free of gas leaks? (Check whether refrigerant charge was required frequently for  the system before)

Are heat insulation materials of the existing pipe system to  reuse free of peel-offs or deterioration? (Heat insulation is necessar

y for both gas and liquid pipes)

Change the branching pipe to a specified type.

Does the existing pipe system to reuse satisfy all of the following? (1) The pipe length is 30m or less. (2) The pipe size conforms to the table of pipe size restrictions. (3) The elevation difference between the indoor and outdoor units 

conforms to the following restrictions.

        Where the outdoor unit is above: 20m or less         Where the outdoor unit is below: 20m or less

Which of the following refrigeration oils  does the existing unit use? Suniso, MS, Barrel Freeze, HAB, Freol,  ether oil, ester oil

Make an inquir

y 

for reusability

.

Change

Change is impossible.

>˜Ê1Ãi

>˜Ê˜œÌÊ1Ãi

Repair

 is impossible.

Air tightness is impossible.

Remove is impossible.

Repair is impossible.

Repair

Repair

Repair

Some loose pipe supports

Air tightness is OK

Remove

Check whether an existing pipe system is reusable or not by using the following flow chart.

Are not there any loose pipe supports?

Are there any branch pipes with no indoor unit connected?

NO

※

 If you obtain a negative figure as a result of calculation, no additional  refrigerant needs to be charged.

Example)

 When an SRC63 is installed in a 10m long existing pipe  system (li

quid

ø

9.52,

 gas 

ø

12.7), the quantity of refrigerant to 

charge additionally should be (10m

-

5m) x 60g/m 

=

 300g.

<Where the existing unit can be run for a cooling operation.>

Carr

y out the following steps with the excising unit

 (in the order of (1), (2), (3) and (4))

(1) Run the unit for 30 minutes for a cooling operation. (2) Stop the indoor fan and run the unit for 3 minutes for a cooling operation (returning liquid) (3) Close the liquid side ser

vice valve of the outdoor unit and pump down (refrigerant recover

y)

(4) Blow with nitrogen gas.

※

 If discolored refrigeration oil or any foreign matters is discharged by 

the blow

, wash the pipe system or install a new pipe system.

UʜÀÊ̅iÊv>ÀiʘÕÌ]Ê`œÊ˜œÌÊÕÃiÊ̅iʜ`ʜ˜i]ÊLÕÌÊÕÃiÊ̅iʜ˜iÊÃ

Õ««ˆi`Ê܈̅Ê̅iʜÕÌ`œœÀÊ՘ˆÌ°Ê

Process a flare to the dimensions specified for R410A.

<Where the existing unit cannot be run for a cooling operation.>

W

ash the pipe system or install a new pipe system.

UÊvÊޜÕÊV…œœÃiÊ̜ÊÜ>ÅÊ̅iÊ«ˆ«iÊÃÞÃÌi“]ÊVœ˜Ì>VÌʜÕÀÊ`ˆÃÌÀˆ

LÕ̜Àʈ˜Ê̅iÊ>Ài>°

W

ARNING

※

 Check with the flow chart developed for a case  where an existing pipe system is reused for a  twin-triple-double-twin model published as a  technical data sheet.

Always use an earth leakage circuit breaker designed for inverter circuits to prevent  a faulty operation.

1ÃiÊV>LiÃÊvœÀʈ˜ÌiÀVœ˜˜iV̈œ˜Ê܈Àˆ˜}Ê̜Ê>ۜˆ`ʏœœÃi˜ˆ˜}ʜvÊ̅i

Ê

wires. CENELEC code for cables Required field cables.

In case of faulty wiring connection, indoor unit dose not  operate. Then, run lamp turns on and timer lamp blinks.

INSTALLATION TEST CHECK  POINTS

After installation

Power cables and connecting wires are securely fixed to the terminal block.

The power source voltage is correct as the rating.

The drain hose is fixed securely.

Service valve is fully open.

No gas leaks from the joints of the service valve.

The pipe joints for indoor and outdoor pipes have been insulated.

The reverse flow check cap is attached.

The cover of the pipe cover (A) faces downward to prevent rain from entering.

Gaps are properly sealed between the pipe covers (A) (B) and the wall surface / pipes.

The screw of the side cover is tightened securely.

Check the following points again after completion of the  installation, and before turning on the power. Conduct a test run  again and ensure that the unit operates properly. Explain to the customer how to use the unit and how to take care  of the unit following the instruction manual.

5. UTILIZA

TION OF EXISTING PIPING

Main 

fuse 

specification

250V 20A

Specification

Part No.

SSA564A136A

Liquid pipe 

Gas pipe 

1Ã>LˆˆÌÞ

Maximum one-way pipe length 

Length covered without additional charge

Pipe size

Additional charge volume per meter of pipe

25g/m

ø6.35

ø15.88

◎

30

15

Model 71(24), 80(28)

60g/m

ø9.52

ø15.88

△

12

6

20g/m

ø6.35

ø12.7

◎

30

15

Model 63(21)

60g/m

ø9.52

ø12.7

△

10

5

UÊ

Consult with our distributor  in the area, if you need to  recover refrigerant and  charge it again.

UÊ

˜ÞÊVœ“Lˆ˜>̈œ˜ÃʜvÊ«ˆ«iÊ

sizes not listed in the table 

Model 63(21)

Model 71(24), 80(28)

1ÃiÊ>Ê̜ÀµÕiÊÜÀi˜V…°Ê

If a torque wrench is  not available, fasten  the flare nut manually  first and then tighten  it further, using the  left table as a guide.

 Model 71(24), 80(28)

Grommet

Clearance

3. DRAIN PIPING WORK

UÊ

ÝiVÕÌiÊ`À>ˆ˜Ê«ˆ«ˆ˜}ÊLÞÊÕȘ}Ê>Ê`À>ˆ˜ÊiLœÜÊ>˜`Ê`À>ˆ˜Ê}Àœ““iÌÃÊ

supplied separately as accessories, where water drained from the  outdoor unit is a problem.

UÊ

7>ÌiÀʓ>ÞÊ`Àˆ«Ê܅iÀiÊ̅iÀiʈÃÊ>ʏ>À}iÀÊ>“œÕ˜ÌʜvÊ`À>ˆ˜ÊÜ>Ìi

À°Ê-i>Ê

around the drain elbow and drain grommets with putty or  adequate caulking material.

UÊ

œ˜`i˜Ãi`ÊÜ>ÌiÀʓ>ÞÊvœÜʜÕÌÊvÀœ“ÊۈVˆ˜ˆÌÞʜvÊÃiÀۈViÊÛ>ÛiʜÀÊ

connected pipes.

UÊ

7…iÀiÊޜÕÊ>ÀiʏˆŽiÞÊ̜ʅ>ÛiÊÃiÛiÀ>Ê`>ÞÃʜvÊÃÕL‡âiÀœÊÌi“«iÀ>

ÌÕÀiÃÊ

in a row, do not use a drain elbow and drain grommets. (There is a  risk of drain water freezing inside and blocking the drain.)

UÊ

7…i˜ÊVœ˜`i˜Ãi`ÊÜ>ÌiÀʘii`ÃÊ̜ÊLiʏi`Ê̜Ê>Ê`À>ˆ˜]ÊiÌV°]Ê

install the unit on a flat base (supplied separately as a  locally procured part) or concrete blocks.

Then, secure space for the drain elbow and the drain  hose.

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.

Drain elbow

Drain elbow

Grommet

Grommet

Drain hose 

(To be procured on the installer’s part)

CAUTION

Wiring diagram

UÊ

Ìʅœ`ÃÊV>LiÃʈ˜Ê«>ViÊ>˜`Ê«ÀœÌiVÌÊ̅iÊÌiÀ“ˆ˜>ÊVœ˜˜iV̈œ˜Ê

from external force.

UÊ

/…ˆÃÊV>“«ÊˆÃÊvœÀÊ̅iÊV>Liʈ˜Ê̅iʜÕÌÈ`iÊ`ˆ>“iÌiÀÊ

9

-

15mm.

Adjust it when it is not suitable.

UÊ

Ìʅ>ÃÊÃÌÕVŽÊœ˜Ê̅iʏˆ`ʜvÊ>ÊVœ˜ÌÀœÊLœÝ°

Cable clamp

Indoor - Outdoor  connecting wire

Power cable

DRED cable (Demand response   enabling devices)

UÊ>À̅Ê܈ÀiÊÅ>Ê LiÊ9iœÜÉÀii˜Ê ­9ɮʈ˜ÊVœœÀÊ

and longer than  other AC wires  for safety reason.

 Model 63(21)

Power cable, indoor-outdoor connecting wires

UÊ

Always perform grounding system installation work with the power cable unplugged.

UÊ

Connect a pair bearing a common terminal number with an indoor-outdoor connecting wire.

UÊ

In cabling, fasten cables securely with cable clamps so that no external force may work on terminal connections.

UÊ

Grounding terminals are provided in the terminal block.

UÊ

1ÃiÊ*œÞV…œÀœ«Ài˜iÊÅi>̅i`Êvi݈LiÊVœÀ`Ê­Vœ`iÊ`iÈ}˜>̈œ˜ÊÈä

Ó{xÊxÇ]ÊÈäÎÎx‡Ó‡{ä®Ê܈̅Ê

cross-sectional area of 2.0 or 2.5 mm

2

 for power cable of outdoor unit.

N

L

1

2/N

3

1

2/N

3

Safety breaker

Earth leakage circuit breaker

Earth

Earth

Power 

source

Indoor 

unit

Outdoor 

unit

Model SRC-ZR-S

N

L

D1

C

D1

D2

D3

Safety breaker

Earth leakage circuit breaker

Power 

source

DRED*

Outdoor 

unit

1

2/N

3

1

2/N

3

Indoor 

unit

Model SRC-ZRA-S, DXC-ZRA-S, SRC-YRA-S

C

When 

wire 

length 

exceeds 

30m, 

use 

2.5mm

2

 wires.

When 

wire 

length 

exceeds 

30m, 

use 

2.5mm

2

 wires.

*Demand response enabling devices

D2

D3

Connecting 

cable 

between 

outdoor 

unit 

and 

DRED 

shall 

be 

double 

insulation 

layer

,

polychloroprene 

sheathed 

(>50V) 

with 

size 

4 

x 

(0.5mm

2

 to 

2.0mm

2

) 

cable 

or 

flexible 

cord, 

where 

the 

maximum 

allowable 

length 

is 

30m.

(POWER CABLE) CENELEC code for cables requiring fields cables.

H05RNR3G2.0 [MODEL 63(21)] H05RNR3G2.5 [MODEL 71(24), 80(28)]

Power source terminal block

Power cable, indoor - outdoor connecting wire circuit diagram

UÊ iÊÃÕÀiÊ̜Ê>ÌÌ>V…Ê

round crimp-type  terminal to each  wire.

Model 63

Model 71

Model 80

 Model 63

 Model 71, 80

17-SRK-T206_001-062.indd   59

2017/01/17   17:53:37