Mitsubishi Heavy Industries SRF25ZMXA-S User manual

RESIDENTIAL AIR-CONDITIONING
TECHNICAL MANUAL & PARTS LIST
FLOOR STANDING TYPE
RESIDENTIAL AIR-CONDITIONERS
(Split system, air to air heat pump type)
SRF25ZMXA-S
SRF35ZMXA-S
SRF50ZMXA-S
Manual No.'14•SRF-T-163

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1
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'14 • SRF-T-163
TECHNICAL MANUAL

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2
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'14 • SRF-T-163
gs32+4
CONTENTS
1. SPECIFICATIONS ........................................................................................ 4
(2) Outdoor units ....................................................................................... 8
..................................................... 19
2EMOTECONTROL ..................................................................................... 10
......................................................................... 7
(1) Indoor units .......................................................................................... 7
2. EXTERIOR DIMENSIONS
3. ELECTRICAL WIRING .............................................................................. 12
(1) Indoor units .......................................................................................... 12
4. NOISE LEVEL ............................................................................................ 15
(2) Outdoor units ....................................................................................... 13
6. RANGE OF USAGE & LIMITATIONS
................................................................................... 21
7. CAPACITY TABLES
5. PIPING SYSTEM ...................................................................................... 18
.................................................................................. 22
8. APPLICATION DATA
9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............... 42
4IMEROPERATION .................................................................................. 46
(9) !IROUTLETSELECTION 
............................... 43
/PERATIONCONTROLFUNCTIONBYWIRELESSREMOTECONTROL
&LAPCONTROL 
3ELECTIONOFTHEANNUALCOOLINGFUNCTION .............................................. 44
)NSTALLINGTWOAIRCONDITIONERSINTHESAMEROOM
......................................................................... 43!UTORESTARTFUNCTION
5NIT/./&&BUTTON ........................................................................... 43
....................... 42
3ILENTMODE .................................................................................... 46
$2%$ 
.IGHTSETBACK .................................................................................. 46
/UTLINEOFHEATINGOPERATION ................................................................ 46
/UTLINEOFDRYDEHUMIDIFYINGOPERATION ............................................. 49
/UTLINEOFCOOLINGOPERATION ............................................................... 48
)NSTALLATIONOFINDOORUNIT ...................................................................... 22
)NSTALLATIONOFOUTDOORUNIT .................................................................. 26
%CONOMYOPERATION .............................................................................. 44
(IGHPOWEROPERATION ........................................................................... 44
/UTLINEOFAUTOMATICOPERATION ........................................................... 49
0ROTECTIVECONTROLFUNCTION 

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3
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'14 • SRF-T-163
(10) How to make sure of wireless remote control ...................................... 77
(12) Outdoor unit inspection points .............................................................. 78
(11) Inspection procedure for blown fuse on the indoor and outdoor PCB .... 77
(8)
Phenomenon observed after shortcircuit, wire breakage on sensor ......... 75
(9) Checking the indoor electrical equipment ........................................... 75
■How to read the model name
Example: SRF 25 Z
Series code
Inverter type
Product capacity (Cooling capacity : 2.5kW)
Model name SRF : Floor standing type
SRC : Outdoor unit
MXA-S
........................................................................................... 81
11. OPTION PARTS
.............................................................. 81
..................................................................... 87
(1) Wired remote control (RC-E5)
(2) Interface kit (SC-BIKN-E)
(3) Super link E board (SC-ADNA-E) .......................................................... 91
(6) Service mode (Trouble mode access function) ................................... 62
(7) Inspection procedures corresponding to detail of trouble .................... 70
..................... 60
(4) Troubleshooting procedure (If the air conditioner runs)
(3) Troubleshooting procedure
(If the air conditioner does not run at all)
........ 59
(2) Items to check before troubleshooting ................................................. 59
(5) Self-diagnosis table ............................................................................. 61
............................................................................... 59
(1) Cautions ............................................................................................. 59
10. MAINTENANCE DATA

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4
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'14 • SRF-T-163
1. SPECIFICATIONS
RWB000Z056
Model
S-AXMZ52CRStinuroodtuOS-AXMZ52FRStinuroodnImetI
zH05,V042-022,esahP1ecruosrewoP
)).xaM(2.3-).niM(9.0(5.2)egnar(yticapacgnilooclanimoN
)).xaM(7.4-).niM(9.0(4.3)egnar(yticapacgnitaehlanimoN
)28.0-91.0(125.0gnilooCrewoP
)02.1-32.0(327.0gnitaeHnoitpmusnoc
07.1noitpmusnocrewopxaM
Running Cooling 2.6 / 2.5 / 2.4 (220/ 230/ 240 V
)
current Heating 3.6 / 3.4 / 3.3 (220/ 230/ 240 V
)
Inrush current, max current 3.6 / 3.4 / 3.3 (220/ 230/ 240 V), MAX
8
19gnilooC
rotcafrewoP 29gnitaeH
08.4gnilooCREE
07.4gnitaeHPOC
0615gnilooC
0615gnitaeH
Cooling Hi: 40 Me: 32 Lo: 29 ULo: 26 47
Heating Hi: 40 Me: 35 Lo: 33 ULo: 28 47
24:gnitaeH/14:gnilooClevelerusserpdnuosedomtneliS
Exterior dimensions (Height x Width x Depth) 600 x 860 x 238 595 x 780(+62) x 290
etihwoccutSwonseniFecnaraepparoiretxE
tnelaviuqeraen)1.1/5.7Y2.4(tnelaviuqeraen)1.0/3.9Y0.8()rolocllesnuM(
5381thgiewteN
1x)epytyratoR(1EDM7705B-MR
- yt'Q&epytrosserpmoC
)nevirdretrevnI(57.0
- )dohtemgnitratS(rotomrosserpmoC
)
86AMEZEERFDNOMAID(53.0 - )epyt,tnuomA(liotnaregirfeR
Refrigerant (Type, amount, pre-charge length) R410A 1.2 in outdoor unit (incl. the amount for the piping of 15m )
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
evlavnoisnapxecinortcelE+sebutyrallipaClortnoctnaregirfeR
Fan type & Q'ty Turbo fan x 1 Propeller fan x 1
)evirdtceriD(1x42)evirdtceriD(1x04)dohtemgnitratS(rotomnaF
Cooling Hi: 9.0 Me: 7.6 Lo: 6.7 ULo: 5.
8
29.5
Heating Hi: 10.5 Me: 8.2 Lo: 7.7 ULo: 6.
6
27.0
00erusserpcitatslanretxeelbaliavA
elbissoptoNekatniriaedistuO
1x)elbahsaw(tenenelyporpyloPytitnauQ/ytilauQ,retlifriA
Shock & vibration absorber Rubber sleeve (for fan motor)
Rubber sleeve (for fan motor & compressor)
retaehcirtcelE
lortnocetomersseleriWlortnocetomeR
tatsomrehtretupmocorciMlortnocerutarepmetmooR
Operation display
RUN: Green, TIMER: Yellow, HI POWER: Green, Air outlet selection: Green, ECONO: Green
Compressor overheat protection, Overcurrent protection,
Safety equipments Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection( High pressure control ), Cooling overload protection
:enildiuqiL)D.O(ezisgnipiptnaregirfeR 6.35 ( 1/4" ) Gas line: 9.52 ( 3/8" )
noitcennoceralFnoitcennoceralFdohtemgnitcennoC
gnipipfohtgneldehcattA
tnednepedni,)sedishtoB(yrasseceNgni
piprofnoitalusnI
51.xaMhtgnel)yaweno(eniltnaregirfeR
Vertical height diff. between O.U. and I.U
Max.10 ( Outdoor unit is higher ) / Max.10 ( Outdoor unit is lower )
seloH)61PV(elbatcennocesoHesohniarD φ20 x 2 pcs
thgiehtfilxam,pmupniarD
61ezisrekaerbdednemmoceR
L.R.A. (Locked rotor ampere) 3.6 / 3.4 / 3.3 (220/ 230/ 240 V
)
Interconnecting wires Size x Core number 1.5mm2x 4 cores ( Including earth cable ) / Terminal block ( Screw fixing type )
4XPI0XPIrebmunPI
Standard accessories
Mounting kit, Clean filter ( Natural Enzyme Filter x 1, Photocatalytic washable deodorizing filter x 1 )
)E-NKIB-CS(tikecafretnIstrapnoitpO
Note (1) The data are measured at the following conditions. The pipe length is 7.5m.
Item Indoor air temperature Outdoor air temperature
Operation DB WB DB WB
Cooling 27℃19℃35℃24℃
Heating 20℃ ー 7℃6℃
(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) Sound level indicates the value in an anechoic chamber. During operation these values are somewhat
higher due to ambient conditions.
(4) Select the breaker size according to the own national standard.
(5) This air-conditioner is compliant with DRED (AS/NZS 4755.3.1) , and can operate with DRM1,2 or 3,
and is equipped with a terminal block for DRED.
dB(A)
Sound pressure level
kg
W
SRF25ZMXA-S
Operation
data
kW
kW
kW
A
％
Sound power level
mm
kg
kW
ℓ
ISO5151-T1
Air flow m3/min
Pa
Operation
control
Installation
data
mm
m
m
m
mm
A
A
Standards
φ φ
-
-
-
-
-
- -
- -

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5
-
'14 • SRF-T-163
Model
S-AXMZ53CRStinuroodtuOS-AXMZ53FRStinuroodnImetI
zH05,V042-022,esahP1ecruosrewoP
)).xaM(1.4-).niM(9.0(5.3)egnar(yticapacgnilooclanimoN
)).xaM(1.5-).niM(9.0(5.4)egnar(yticapacgnitaehlanimoN
91.0(098.0gnilooCrewoP 1.26 )
-
32.0(421.1gnitaeHnoitpmusnoc 1.43 )
48.1noitpmusnocrewopxaM
)V042/032/022(7.3/9.3/1.4gnilooCgninnuR
)V042/032/022(7.4/9.4/2.5gnitaeHtnerruc
8XA
M,)V042/032/022(7.4/9.4/2.5tnerrucxam,tnerruchsurnI
99gnilooC
rotcafrewoP 99gnitaeH
39.3gnilooCREE
00.4gnitaeHPOC
2625gnilooC
2625gnitaeH
Cooling Hi: 41 Me: 34 Lo: 33 ULo: 28 50
Heating Hi: 41 Me: 36 Lo: 35 ULo: 31 50
34:gnitaeH/54:gnilooClevelerusserpdnuosedomtneliS
Exterior dimensions (Height x Width x Depth) 600 x 860 x 238 595 x 780(+62) x 290
etihwoccutSwonseniFecnaraepparoiretxE
tnelaviuqeraen)1.1/5.7Y2.4(tnelaviuqeraen)1.0/3.9Y0.8()rolocllesnuM(
5391thgiewteN
1x)epytyratoR(1EDM7705B-MR
- yt'Q&epytrosserpmoC
)nevirdretrevnI(09.0)dohtemgnitratS(rotomrosserpmoC
)86AMEZEERFDNOMAID(53.0)epyt,tnuomA(liotnaregirfeR
Refrigerant (Type, amount, pre-charge length) R410A 1.2 in outdoor unit (incl. the amount for the piping of 15m )
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
evlavnoisnapxecinortcelE+sebutyrallipaClortnoctnaregirfeR
1xnafrelleporP1xnafobruTyt'Q&epytnaF
)evirdtceriD(1x42)evirdtceriD(1x04)dohtemgnitratS(rotomnaF
Cooling Hi: 9.2 Me: 7.8 Lo: 7.3 ULo: 6.4 32.5
Heating Hi: 10.7 Me: 8.3 Lo: 8.1 ULo: 7.4 29.5
00erusserpcitatslanretxeelbaliavA
- elbissoptoNekatniriaedistuO
1x)elbahsaw(te
nenelyporpyloPytitnauQ/ytilauQ,retlifriA
)rotomnafrof(eveelsrebbuRrebrosbanoitarbiv&kcohS
Rubber sleeve (for fan motor & compressor)
retaehcirtcelE
lortnocetomersseleriWlortnocetomeR
tatsomrehtretupmocorciMlortnocerutarepmetmooR
Operation display
RUN: Green, TIMER: Yellow, HI POWER: Green, Air outlet selection: Green, ECONO: Green
Compressor overheat protection, Overcurrent protection,
Safety equipments Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection( High pressure control ), Cooling overload protection
:enildiuqiL)D.O(ezisgnipiptnaregirfeR 6.35 ( 1/4" ) Gas line: 9.52 ( 3/8" )
noitcennoceralFnoitcennoceralFdohtemgnitcennoC
gnipipfohtgneldehcattA
tnednepedni,)sedishtoB(yrasseceNgnipiprofnoitalusnI
51.xaMhtgnel)y
aweno(eniltnaregirfeR
Vertical height diff. between O.U. and I.U
Max.10 ( Outdoor unit is higher ) / Max.10 ( Outdoor unit is lower )
seloH)61PV(elbatcennocesoHesohniarD φ20 x 2 pcs
thgiehtfilxam,pmupniarD
61ezisrekaerbdednemmoceR
)V042/032/022(7.4/9.4/2.5)erepmarotordekcoL(.A.R.L
Interconnecting wires Size x Core number 1.5mm2x 4 cores ( Including earth cable ) / Terminal block ( Screw fixing type )
4XPI0XPIrebmunPI
Standard accessories
Mounting kit, Clean filter ( Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1 )
)E-NKIB-CS(tikecafretnIstrapnoitpO
Note (1) The data are measured at the following conditions. The pipe length is 7.5m.
Item Indoor air temperature Outdoor air temperature
Operation DB WB DB WB
Cooling 27℃19℃35℃24℃
Heating 20℃ ー 7℃6℃
(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) Sound level indicates the value in an anechoic chamber. During operation these values are somewhat
higher due to ambient conditions.
(4) Select the breaker size according to the own national standard.
(5) This air-conditioner is compliant with DRED (AS/NZS 4755.3.1) , and can operate with DRM1,2 or 3,
and is equipped with a terminal block for DRED.
dB(A)
Sound pressure level
kg
W
SRF35ZMXA-S
Operation
data
kW
kW
kW
A
％
Sound power level
mm
kg
kW
ℓ
ISO5151-T1
Air flow m3/min
Pa
Operation
control
Installation
data
mm
m
m
m
mm
A
A
Standards
φ φ
-
-
-
--
--
--
-
-
RWB000Z056

-
6
-
'14 • SRF-T-163
Model
S-AXMZ05CRStinuroodtuOS-AXMZ05FRStinuroodnImetI
zH05,V042-022,esahP1ecruosrewoP
)).xaM(2.5-).niM(1.1(0.5)egnar(yticapacgnilooclanimoN
)).xaM(9.6-).niM(6.0(0.6)egnar(yticapacgnitaehlanimoN
2.0(093.1gnilooCrewoP 1.70 )
2.0(045.1gnitaeHnoitpmusnoc 2.15 )
04.3noitpmusnocrewopxaM
)V042/032/022(8.5/1.6/4.6gnilooCgninnuR
)V042/032/022(5.6/8.6/1.7gnitaeHtnerruc
51XAM
,)V042/032/022(5.6/8.6/1.7tnerrucxam,tnerruchsurnI
99gnilooC
rotcafrewoP 99gnitaeH
06.3gnilooCREE
09.3gnitaeHPOC
3685gnilooC
2685gnitaeH
2523:oLU53:oL24:eM64:iHgnilooC
1533:oLU93:oL14:eM74:iHgnitaeH
54:gnitaeH/54:gnilooClevelerusserpdnuosedomtneliS
Exterior dimensions (Height x Width x Depth) 600 x 860 x 238 640 x 800(+71) x 290
etihwoccutSwonseniFecnaraepparoiretxE
tnelaviuqeraen)1.1/5.7Y2.4(tnelaviuqeraen)1.0/3.9Y0.8()rolo
cllesnuM(
5491thgiewteN
1x)epytyratoRniwT(2ECM3115TMR
- yt'Q&epytrosserpmoC
)nevirdretrevnI(05.1)dohtemgnitratS(rotomrosserpmoC
)86AMEZEERFDNOMAID(54.0)epyt,tnuomA(liotnaregirfeR
Refrigerant (Type, amount, pre-charge length) R410A 1.5 in outdoor unit (incl. the amount for the piping of 15m )
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
evlavnoisnapxecinortcelE+sebutyrallipaClortnoctnaregirfeR
1xnafrelleporP1xnafobruTyt'Q&epytnaF
)evirdtceriD(1x43)evirdtceriD(1x04)dohtemgnitratS(rotomnaF
Cooling Hi: 11.5 Me: 9.6 Lo: 7.4 ULo: 6.6 36.0
Heating Hi: 12.0 Me: 10.0 Lo: 9.4 ULo: 7.6 33.0
00erusserp
citatslanretxeelbaliavA
- elbissoptoNekatniriaedistuO
- 1x)elbahsaw(tenenelyporpyloPytitnauQ/ytilauQ,retlifriA
Rubber sleeve (for fan motor)rebrosbanoitarbiv&kcohS Rubber sleeve (for fan motor & compressor)
-- retaehcirtcelE
lortnocetomersseleriWlortnocetomeR
tatsomrehtretupmocorciMlortnocerutarepmetmooR
Operation display
RUN: Green, TIMER: Yellow, HI POWER: Green, Air outlet selection: Green, ECONO: Green
Compressor overheat protection, Overcurrent protection,
Safety equipments Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection( High pressure control ), Cooling overload protection
:enildiuqiL)D.O(ezisgnipiptnaregirfeR 6.35 ( 1/4" ) Gas line: 12.7 ( 1/2" )
noitcennoceralFnoitcennoceralFdohtemgnitcennoC
-- gnipipfohtgneldehcattA
tnednepedni,)sedi
shtoB(yrasseceNgnipiprofnoitalusnI
03.xaMhtgnel)yaweno(eniltnaregirfeR
Vertical height diff. between O.U. and I.U
Max.20 ( Outdoor unit is higher ) / Max.20 ( Outdoor unit is lower )
seloH)61PV(elbatcennocesoHesohniarD φ20 x 5 pcs
thgiehtfilxam,pmupniarD
61ezisrekaerbdednemmoceR
)V042/032/022(5.6/8.6/1.7)erepmarotordekcoL(.A.R.L
Interconnecting wires Size x Core number 1.5mm2x 4 cores ( Including earth cable ) / Terminal block ( Screw fixing type )
4XPI0XPIrebmunPI
Standard accessories
Mounting kit, Clean filter ( Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1 )
)E-NKIB-CS(tikecafretnIstrapnoitpO
Note (1) The data are measured at the following conditions. The pipe length is 7.5m.
Item Indoor air temperature Outdoor air temperature
Operation DB WB DB WB
Cooling 27℃19℃35℃24℃
Heating 20℃ ー 7℃6℃
(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) Sound level indicates the value in an anechoic chamber. During operation these values are somewhat
higher due to ambient conditions.
(4) Select the breaker size according to the own national standard.
(5) This air-conditioner is compliant with DRED (AS/NZS 4755.3.1) , and can operate with DRM1,2 or 3,
and is equipped with a terminal block for DRED.
A
Standards
ISO5151-T1
Air flow m3/min
Pa
Operation
control
Installation
data
kg
W
mm
A
mm
kg
kW
ℓ
mm
m
m
m
SRF50ZMXA-S
Operation
data
kW
kW
kW
A
％
Sound power level
dB(A)
Sound pressure level
φ φ
-
-
--
-
-
-
RWB000Z056

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7
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'14 • SRF-T-163
2. EXTERIOR DIMENSIONS
(1) Indoor units
Models SRF25ZMXA-S, 35ZMXA-S, 50ZMXA-S
RFB000Z006
D E
G
A B C F
F
FF
600
Unit:mm
Hole on wall for right rear piping Hole on wall for left rear piping Gas piping Drain hose Liquid piping
F E C D B
Symbol
A
（䃥65）
VP16
䃥6.35（1／4"）（Flare）
Content
（䃥65）
25,35 : 䃥9.52（3／8"）（Flare）
50 : 䃥12.7（1／2"）（Flare）
Model
Outlet for piping（on both side）
Outlet for down piping
（Refer to the above view）
Space for installation and service when viewing from the front
（Option）
Wired remote controlWireless remote control
G
Screw point fasten the indoor unit 䃥5
860 238
15 60
60
100 60
55
157.276.3 85.3 22.7
185
25.530.5
198
804 6565
45
585
30.5 103.5
585
45
83.5 620 156.5
5.2
726
Notes
（1）The model name label is attached on the rightside of the unit.
（2）It takes the interface kit（SC-BIKN-E）to connect the wired remote control.
（3）In case of wall installation, leave the unit 150mm or less from the floor.
514.8 80
211.5255255138.5
544.8 20
482.8
156.2
203
50
70
1084010
50+Service space
（Service space）
35
（Service space）
125
6
100
12
Unit
Installation plate
Ƒ 19
60 24
167

-
8
-
'14 • SRF-T-163
(2) Outdoor units
Models SRC25ZMXA-S, 35ZMXA-S
RCV000Z018
63.469.4
290
390.6 50.6
12
E
D
111.6
390.6
510
780
158.4
14.8
17.9
61.9
312.5 24.3
351.6
φ
9.52（3／8"）（Flare）
Content
CPipe／cable draw-out hole
EAnchor bolt hole
Drain discharge hole
Symbol
B AService valve connection（gas side）
M10×4places
Service valve connection（liquid side）φ
6.35（1／4"）（Flare）
Dφ
20×2places
595
15.8
97.7 42.5
138.4
B
Terminal block
Terminal block
（For DRED AS／NZS 4755）
33.5
C
40°
40°
A
Notes
（1）It must not be surrounded by walls on the four sides. （2）The unit must be fixed with anchor bolts. An anchor bolt must not
protrude more than 15mm.
（3）Where the unit is subject to strong winds, lay it in such
a direction that the blower outlet faces perpendicularly to the dominant wind direction.
（4）Leave 1m or more space above the unit. （5）A wall in front of the blower outlet must not exceed the units height. （6）The model name label is attached on the lower right corner of the front panel.
Service space
L2
Intake
Intake L3
Outlet L1
L4
Minimum installation space
Examples of
installation
Dimensions
L2 L3 L4 L1
Ｉ ＩＩ ＩＩＩ ＩＶ
100 100 250
Open 280
Open
80 75 Open
250
80
280 180
Open
80
Open
Unit:mm

-
9
-
'14 • SRF-T-163
Model SRC50ZMXA-S
RCT000Z008
290
90.6
43.5
35.6
38.6
327.3
520.6 161
50.6
12 E
89
327.3
510
800
201
71.2
17.9
14.8 312.5
351.6
24.3
640
12.4
93 42.5
Terminal block
Terminal block
（For DRED AS／NZS 4755）
148.4 33.5 C
40°
40°
B
A
L2
Intake
Outlet
Intake L3 L4
L1
Service space
Examples of
Dimensions
installation
Ｉ ＩＩ ＩＩＩ ＩＶ
100 100 250
Open
Open
250
80
280 280
Open
80 75
180
Open
80
Open
Unit:mm
Minimum installation space
Content
CPipe／cable draw-out hole D
EAnchor bolt hole
Drain discharge hole
Symbol
B AService valve connection（gas side）
M10×4places
Service valve connection（liquid side）
φ12.7（1／2" （ ） Flare）
φ
20×5places
φ6.35（1／4" （ ） Flare）
Notes
（1）It must not be surrounded by walls on the four sides.
（2）The unit must be fixed with anchor bolts. An anchor bolt must not
protrude more than 15mm.
（3）Where the unit is subject to strong winds, lay it in such
a direction that the blower outlet faces perpendicularly to the dominant wind direction.
（4）Leave 1m or more space above the unit. （5）A wall in front of the blower outlet must not exceed the units height. （6）The model name label is attached on the right side of the unit.
D

-
10
-
'14 • SRF-T-163
(3) Remote control
Unit : mm
60 26
167
(a) Wireless remote control

-
11
-
'14 • SRF-T-163
(b) Wired remote control (option parts)
Interface kit (SC-BIKN-E) is required to use the wired remote control.
PJZ000Z295
TEMP ON/OFF
48
□120
L C D
Wall surface
Wiring
Electrical box
（Not included）
19
Wiring specifications
Exposed mounting
23
46
11.5 11
Remote
control
outline
120
45
83.5
42
120
Remote control installation dimensions
Wiring oulet
Installation hole
12×7 Slot hole
9.5×5 Slot hole （4places）
（1）Installation screw for remote control
M4 Screw (2 pieces)
44
(1) If the prolongation is over 100m, change to the size below.
But, wiring in the remote control case should be under 0.5mm2. Change the wire size outside of
the case according to wire connecting. Waterproof treatment is necessary at the wire connecting
section. Be careful about contact failure.
Length Wiring thickness
100 to 200m 0.5mm2×2 cores
0.75mm2×2 cores
1.25mm2×2 cores
2.0mm2×2 cores
Under 300m
Under 400m
Under 600m
Upper part
Lower part
Lower case
Sheath
Upper cace
Board
Wiring
Upper
Lower
X Y
Sheath
Upper cace
Board
Wiring
Upper
Lower
YX
Tighten the screws after
cutting off the thin part of
screw mounting part.
Embedded mounting
Pearl WhiteExterior appearance
(Munsell color) (N8.5) near equivalent
The peeling-off length of sheath
The peeling-off length
of sheath
In case of pulling out from
upper left
In case of pulling out
from upper left
In case of pulling out
from upper left
X wiring : 170mm
Y wiring : 190mm
Pulling out from center
X wiring : 215mm
Y wiring : 195mm
Pulling out from upper left
In case of pulling out from center
In case of pulling out
from center
In case of pulling out
from center
Wiring outlet
Cut off the upper thin part of remote control lower case with a nipper or knife,
and grind burrs with a file etc.
0.3mm2×2 cores.
X, Y Terminal block
Attach M3 screw
with washer
Unit:mm

-
12
-
'14 • SRF-T-163
3. ELECTRICAL WIRING
(1) Indoor units
Models SRF25ZMXA-S, 35ZMXA-S, 50ZMXA-S
RWB000Z057
250V
F
G
3.15A
S／NVa
CNU
CNS
INTERFACE KIT
SC-BIKN-E
CNG
CNE
DISPLAY
WIRELESS RECEIVER
J
CNF
U
M
HEAT
1 3 4 5 6
BACK-UP SW
5 2
10
EXCHANGER
L
Th1
BOARD
CIRCUIT PRINTED
CNX2 CNX1
M M M M
5 5 5 5
5 5 5 5
RD
WH RD
WH BK BL
Y
Y／G
BK
t
Th21 Th22
Th3
DM1
DM2
SM1 SM2
FMI
DS
t t
TO OUTDOOR UNIT
HEAT
EXCHANGER
1
2／N
3
POWER WIRES SIGNAL WIRE
12/N 3
Power source 1 Phase 220 - 240V 50Hz
T
AIR SELECTION SW
Color Marks
Blue BlackBK Red
BL RD
WhiteWH
Yellow／Green
Y／G
YellowY
ColorMark
Heat exch. sensor Humidity sensor Fan motor Room temp. sensor Flap motor
Th1 Th21,2
Th3
Diode stackDS FuseF Connector
CNE-CNX2
FMI
Terminal blockT Damper motor
DM1
SM1,2
Damper arm motor
Description
Item
VaristorVa
DM2

-
13
-
'14 • SRF-T-163
(2) Outdoor units
Models SRC25ZMXA-S, 35ZMXA-S
RWC000Z271
TO INDOOR UNIT
SIGNAL WIRE
POWER WIRES
3
1
2N
POWER SOURCE
1 Phase 220-240V 50Hz／220V 60Hz
TB1
TERMINAL
BLOCK
L
N
1 3 2
（BK）
250V 15A
（Y／G）
（BK）
（WH）
R.IN
（Y／G） （Y／G）
（RD）
C-2 G1 G2
S.IN
FILTER NOISE
TB2
TERMINAL
BLOCK
D1 D2 D3
C
（YE）
（RD）
（BL）
（BK）
（WH）
CNPOWER
CNDRED
（BK）
CNDRM
（Y／G）
PCB ASSY
PWB2
CNDRM
4
20S
2
CN20S
F1
250V 3.15A
（OR）
（Y）
L
T1 T2
CIRCUIT
POWER
SWITCHING
F4
250V 10A
CIRCUIT
PAM
PCB ASSY PWB1
TRANSISTOR
POWER
250V 20A
F2
（BK） （WH） （RD）
W
V
U
W
V
U
N
P
M
3〜
CM
CNFAN
FMo
M
F3 250V 1A
CNTH CNEEV
2 2 2
TH2 TH3 TH4 EEV
M
The specifications shown in the above table are for units without heaters. For units with heaters, refer to the installation instructions or the construction instructions of the indoor unit. Switchgear of Circuit breaker capacity which is calculated from MAX. over current should be chosen along the regulations in each country. The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than three cables contained in a conduit and a voltage drop is 2%. For an installation falling outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation in effect in each country.
Power cable, indoor-outdoor connecting wires
MAX running current
（A）
Model
25 35
8
Power cable size
（mm2）
2.0 32
Power cable length
（m）
indoor-outdoor
wire size x number
Earth wire size
（mm
2
）
1.51.5mm2x 3
DescriptionItem
Connector Electric expansion valve（coil）
EEV
Fan motorFMo ReactorL Terminal blockTB1,2 Compressor motor
CM
Solenoid valve for 4 way valve20S Heat exchanger sensor（outdoor unit）
TH2
Outdoor air temp.sensorTH3
TH4 Discharge pipe temp.sensor CN20S CNTH CNEEV CNFAN
Color
RD Mark
Orange
OR
Yellow Blue
／Green
Y／G
Black
BK
Yellow
Y BL
WhiteWH Red
• • •

-
14
-
'14 • SRF-T-163
Model SRC50ZMXA-S
RWC000Z268
CN20S
POWER SOURCE
1 Phase 220-240V 50Hz
TB1
TERMINAL
BLOCK
N L（BK）
FUSE
250V 20A
（BK）
（WH）
（BR）
（Y／G）
PCB ASSY （SUB）
（WH）
TB2
BLOCK
TERMINAL
1
3
2N
（Y／G）
TO INDOOR UNIT
POWER WIRES
SIGNAL WIRE
3
1
TB3
BLOCK
TERMINAL
D1 D3 D2
C（BK）
（WH）
（YE）
（RD）
（BL）
（BK）
（Y／G）
20S
CNDRM
CNPOWER
CNDRED
PCB ASSY（ ）DRED
TH2 TH4TH3
2 2 2
4
CNDRM CNTH
（RD）C-2
S
R
IN
IN
OUT
R
F10
（Y／G）
G1 CN20S
（Y／G）
R
O O
S
S-1
CNMAIN
G3
（BK）
（WH） （WH）
（BK）
4
S R S-2
CNSUB
F1
250V 3.15A
CIRCUIT
SWITCHING
POWER
250V 20A ACTIVE
FILTER
UNIT
PCB ASSY （MAIN）
F8
250V 20A
F2
TRANSISTOR
POWER
P NW
V U
W V U
2N
R
（OR）
（YE）
T2
T1
F3 250V 1A
CNFAN
（BK） （WH） （RD）
MS
3〜
CM
M
FMo
Power cable, indoor-outdoor connecting wires
MAX running current Power cable size
（mm
2
）（A）
Power cable length
（m）
indoor-outdoor
wire size x number
Earth wire size
（mm
2
）
15 2.0 18 1.5mm
2
x 3 1.5
The specifications shown in the above table are for units without heaters. For units with heaters, refer
to the installation instructions or the construction instructions of the indoor unit.
Switchgear of Circuit breaker capacity which is calculated from MAX. over current should be chosen along the regulations in each country.
The cable specifications are based on the assumption that a metal or plastic conduit is used with no
more than three cables contained in a conduit and a voltage drop is 2%. For an installation falling
outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation
in effect in each country.
Description
Item
Connector
CNEEV〜CN20S
Electric expansion valve（coil）
EEV
Fan motor
FMo
Reactor
R
Terminal blockTB1,2,3 Compressor motor
CM
Solenoid valve for 4 way valve
20S
Heat exchanger sensor（outdoor unit）
TH2
Outdoor air temp.sensor
TH3 TH4 Discharge pipe temp.sensor
Mark BK
BR OR RD WH YE BL Y／G Yellow／Green
Blue Yellow White Red Orange Brown Boack Color
• • •

-
15
-
'14 • SRF-T-163
4. NOISE LEVEL
Model SRF25ZMXA-S
(Outdoor Unit)
Model SRC25ZMXA-S
Noise
Level
Cooling 47 dB(A)
Heating 47 dB(A)
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10-5 Pa )
10
20
30
40
50
60
70
N50
N40
N60
N70
N20
N30
× ...... Cooling, Heating
(Indoor Unit)
Model SRF25ZMXA-S
Noise
Level
Cooling 40 dB(A)
Heating 40 dB(A)
× ...... Cooling, Heating
Condition ISO-T1, JIS C 9612
10
20
30
40
50
60
70
10
20
30
40
50
60
70
Sound Pressure Level (dB)
(standard 2×10-5 Pa)
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
N50
N30
N40
N60
N70
N20
Mike position: at highest noise level in position as mentioned below
Distance from front side 1m
Mike position
0.8m
1m
Unit Mike position
(Center & Low points)
Mike position
Unit Mike position
1m
1m

-
16
-
'14 • SRF-T-163
10
20
30
40
50
60
70
10
20
30
40
50
60
70
Sound Pressure Level (dB)
(standard 2×10-5 Pa)
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
N50
N30
N40
N60
N70
N20
(Indoor Unit)
Model SRF35ZMXA-S
Noise
Level
Cooling 41 dB(A)
Heating 41 dB(A)
× ...... Cooling, Heating
Condition ISO-T1, JIS C 9612
Model SRF35ZMXA-S
(Outdoor Unit)
Model SRC35ZMXA-S
Noise
Level
Cooling 50 dB(A)
Heating 50 dB(A)
× ...... Cooling, Heating
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10-5 Pa )
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
Mike position: at highest noise level in position as mentioned below
Distance from front side 1m
Mike position
0.8m
1m
Unit Mike position
(Center & Low points)
Mike position
Unit Mike position
1m
1m

-
17
-
'14 • SRF-T-163
Model SRF50ZMXA-S
(Outdoor Unit)
Model SRC50ZMXA-S
Noise
Level
Cooling 52 dB(A)
Heating 51 dB(A)
× ...... Cooling, Heating
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10-5 Pa )
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
(Indoor Unit)
Model SRF50ZMXA-S
Noise
Level
Cooling 46 dB(A)
Heating 47 dB(A)
× ...... Cooling, Heating
Condition ISO-T1, JIS C 9612
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10-5 Pa )
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
Mike position: at highest noise level in position as mentioned below
Distance from front side 1m
Mike position
0.8m
1m
Unit Mike position
(Center & Low points)
Mike position
Unit Mike position
1m
1m

-
18
-
'14 • SRF-T-163
Model SRF50ZMXA-S
Indoor unit Outdoor unit
Flare
connection
Flare connection
Liquid
pipe
(φ6.35)
Gas pipe
(φ12.7)
Service valve
Heat
exchanger
Heat
exchanger
sensor Electronic
expansion valve
(Liquid)
Strainer
Receiver
Muffler
Capillary tube
Outdoor air
temp. sensor
Muffler
Compressor
Discharge pipe
temp. sensor
Cooling cycle
Heating cycle
Check joint
4way valve
Service valve
Heat
exchanger
sensor
(Th22)
(TH3)
Room temp.
sensor
(Th1)
Humidity
sensor
(Th3)
(Th21)
(
Gas )(TH2)
Heat
exchanger
sensor
(TH1)
(EEV)
Capillary tube
Heat
exchanger
Accumulator
Strainer
Models SRK20ZJX-S, 25ZJX-S, 35ZJX-S
Indoor unit Outdoor unit
Flare
connection
Flare connection
Liquid
pipe
(φ6.35)
Gas pipe
(φ9.52)
Service valve
Heat
exchanger
Heat
exchanger
sensor Electronic
expansion valve
(Liquid)
Strainer Muffler
Capillary tube
Outdoor air
temp. sensor
Muffler
Muffler
Compressor
Accumulator
Discharge pipe
temp. sensor
Cooling cycle
Heating cycle
Check joint
4way valve
Service valve
Heat
exchanger
sensor
(Th22)
(TH3)
Room temp.
sensor
(Th1)
(Th21)
(
Gas )(TH2)
Heat
exchanger
sensor
(TH1)
(EEV)
Capillary tube
Heat
exchanger
Model SRK50ZJ-S
Indoor unit Outdoor unit
Flare
connection
Flare connection
Liquid
pipe
(φ6.35)
Gas pipie
(φ12.7)
Service valve
Heat
exchanger
Heat
exchanger
sensor Electronic
expansion valve
(Liquid)
Strainer
Receiver
Muffler
Capillary tube
Outdoor air
temp. sensor
Muffler
Muffler
Compressor
Discharge pipe
temp. sensor
Cooling cycle
Heating cycle
Check joint
4way valve
Service valve
Heat
exchanger
sensor
(Th3)
(TH3)
Room temp.
sensor
(Th1)
(Th2)
(
Gas )(TH2)
Heat
exchanger
sensor
(TH1)
(EEV)
Capillary tube
Heat
exchanger
Humidity
sensor
(HD)
Humidity
sensor
(Th3)
*1. SRF series only.
Models SRF25ZMXA-S, 35ZMXA-S
5. PIPING SYSTEM