Mitsubishi SRK 25ZS-W Technical Manual Download Page 2

Page: 2 / 81

'18 • SRK-T-250

CONTENTS

(2) Outdoor units ......................................................................................... 17

(3) Remote control ........................................................................................ 19

(1) Indoor units

........................................................................................ 16

......................................................................... 16

2. EXTERIOR DIMENSIONS

3. ELECTRICAL WIRING

.............................................................................. 22

(1) Indoor units ............................................................................................. 22

4. NOISE LEVEL ................................................................................................. 25

(2) Outdoor units ........................................................................................... 23

(3) Safety precautions in handling air-conditioners with flammable refrigerants .... 60

............................................................. 45

6. RANGE OF USAGE & LIMITATIONS

....................................................................................... 47

7. CAPACITY TABLES

5. PIPING SYSTEM ............................................................................................ 43

.................................................................................. 48

8. APPLICATION DATA

9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER .................. 62

(11) Timer operation ....................................................................................... 67

(10) 3D auto operation ................................................................................... 66

(9) Air flow direction adjustment ................................................................... 65

(5) Selection of the annual cooling function .................................................. 64

..................................... 63

(4) Installing two air-conditioners in the same room

................................................................................ 63

(3) Auto restart function

(2) Unit ON/OFF button ................................................................................ 63

(1) Operation control function by wireless remote control ............................ 62

(12) Silent operation ....................................................................................... 67

(14) Air flow range setting .............................................................................. 68

(13) Night setback operation .......................................................................... 67

(15) Display brightness adjustment ................................................................ 68

(16) Outline of heating operation .................................................................... 69

(19) Outline of automatic operation ................................................................ 71

(18) Outline of dehumidifying (DRY) opertaion .............................................. 71

(17) Outline of cooling operation .................................................................... 70

(1) Installation of indoor unit ......................................................................... 48

(2) Installation of outdoor unit ....................................................................... 56

(8) Economy operation ................................................................................. 65

(7) High power operation .............................................................................. 64

1. SPECIFICATIONS ........................................................................................ 3

(6) Heating only function ............................................................................... 64

Summary of Contents for SRK 25ZS-W

Page 1: ...Manual No 18 SRK T 250 TECHNICAL MANUAL INVERTER WALL MOUNTED TYPE RESIDENTIAL AIR CONDITIONERS Split system air to air heat pump type SRK20ZS W WB WT 25ZS W WB WT 35ZS W WB WT 50ZS W WB WT...

Page 2: ...direction adjustment 65 5 Selection of the annual cooling function 64 63 4 Installing two air conditioners in the same room 63 3 Auto restart function 2 Unit ON OFF button 63 1 Operation control func...

Page 3: ...pacity 2 0kW Model name SRK Wall mounted type SRC Outdoor unit S W 101 11 OPTION PARTS 123 12 TECHNICAL INFORMATION 101 117 1 Wired remote control 2 Interface kit SC BIKN2 E 3 Superlink E board SC ADN...

Page 4: ...ossible Air filter Quality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Remote...

Page 5: ...ir filter Quality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Remote control W...

Page 6: ...Air filter Quality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Remote control...

Page 7: ...lter Quality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Remote control Wirele...

Page 8: ...ossible Air filter Quality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Remote...

Page 9: ...ossible Air filter Quality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Remote...

Page 10: ...possible Air filter Quality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Remote...

Page 11: ...ble Air filter Quality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Remote cont...

Page 12: ...uality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Remote control Wireless rem...

Page 13: ...possible Air filter Quality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Remot...

Page 14: ...ot possible Air filter Quality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Rem...

Page 15: ...ssible Air filter Quality Quantity Polypropylene net Washable x 2 Shock vibration absorber Rubber sleeve for fan motor Rubber sleeve for fan motor compressor Electric heater Operation control Remote c...

Page 16: ...1 0 00 0 33 0 88 0 00 0 00 0 00 0 00 SRK35ZS WB 11 5 1 21 0 00 0 33 0 88 0 00 0 00 0 00 0 00 SRK50ZS WB 12 0 1 21 0 00 0 33 0 88 0 00 0 00 0 00 0 00 SRK20ZS WT 11 5 1 21 0 00 0 33 0 88 0 00 0 00 0 00...

Page 17: ...n the right side of the unit 2 To connect the wired remote control the interface kit SC BIKN2 E is required 120 19 60 24 167 45 45 870 290 Outlet for downward piping Refer to the top view 230 3 60 13...

Page 18: ...7 42 5 40 40 138 4 33 5 15 8 290 540 20 14 6 16 4 260 130 270 Center of gravity Center of gravity Notes 1 The unit must not be surrounded by walls on the four sides 2 The unit must be fixed with ancho...

Page 19: ...14 6 16 4 145 270 Terminal block 97 7 42 5 15 8 595 275 40 40 138 4 33 5 Center of gravity 69 4 Center of gravity Notes 1 The unit must not be surrounded by walls on the four sides 2 The unit must be...

Page 20: ...19 18 SRK T 250 3 Remote control Unit mm 60 24 167 a Wireless remote control...

Page 21: ...ere the average room temperature cannot be detected Place near the equipment to generate heat Place affected by outside air in opening closing the door Place exposed to direct sunlight or wind from ai...

Page 22: ...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 Y X Tighten the screws after...

Page 23: ...WHITE RED YELLOW GREEN HEAT EXCHANGER 2 N 3 YELLOW GREEN ONLY 2 2 HEAT EXCHANGER 5 FUSE VARISTOR R AMP TERMINAL BLOCK MOTOR FAN LEFT MOTOR LOUVER MOTOR FLAP RIGHT MOTOR LOUVER HEAT EXCHANGER SENSOR 1...

Page 24: ...e x number TH4 Discharge pipe temp sensor TH3 Outdoor air temp sensor TH2 Heat exchanger sensor L Reactor FMo Fan motor EEV Electric expansion valve coil CM Compressor motor CNTH CNFAN CNEEV CN20S Con...

Page 25: ...ctor FMo Fan motor EEV Electric expansion valve coil CM Compressor motor CNTH CNFAN CNEEV CN20S Connector 20S 4 way valve coil Item Description BK Black Mark Color BL Blue RD Red WH White YE Yellow YG...

Page 26: ...eating 56 dB A Cooling Heating ISO5151 T1 H1 Rated capacity value 10 20 30 40 50 60 70 10 20 30 40 50 60 70 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound power level dB M...

Page 27: ...g 56 dB A Level Heating 58 dB A Cooling Heating ISO5151 T1 H1 10 20 30 40 50 60 70 10 20 30 40 50 60 70 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound power level dB Mid o...

Page 28: ...g 61 dB A Level Heating 61 dB A Cooling Heating ISO5151 T1 H1 10 20 30 40 50 60 70 10 20 30 40 50 60 70 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound power level dB Mid o...

Page 29: ...g 61 dB A Level Heating 63 dB A Cooling Heating ISO5151 T1 H1 10 20 30 40 50 60 70 10 20 30 40 50 60 70 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound power level dB Mid o...

Page 30: ...000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Mike po...

Page 31: ...N70 N20 10 20 30 40 50 60 70 10 20 30 40 50 60 70 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pr...

Page 32: ...5 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Mike position at highest n...

Page 33: ...0 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x10 5 Pa Mid octave ba...

Page 34: ...20 30 40 50 60 70 10 20 30 40 50 60 70 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure lev...

Page 35: ...63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x10 5 Pa Mid octave band...

Page 36: ...125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x10 5 Pa Mid octave band f...

Page 37: ...125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x10 5 Pa Mid octave band fr...

Page 38: ...125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x10 5 Pa Mid octave band f...

Page 39: ...0 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x10 5 Pa Mid octave ba...

Page 40: ...125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x10 5 Pa Mid octave band f...

Page 41: ...10 20 30 40 50 60 70 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x1...

Page 42: ...500 1000 2000 4000 8000 Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz N50 N30 N40 N60 N70 N20 N50 N30...

Page 43: ...ssure level dB Standard 2x10 5 Pa Mid octave band frequency Hz Sound pressure level dB Standard 2x10 5 Pa Mid octave band frequency Hz N50 N30 N40 N60 N70 N20 N50 N30 N40 N60 N70 N20 10 20 30 40 50 60...

Page 44: ...7D 5 PIPING SYSTEM Models SRK20ZS S 25ZS S Model SRK35ZS S Humidity sensor HD pipe pipe 4 way valve 4 way valve 5 PIPING SYSTEM Models SRK20ZS W 25ZS W SRK20ZS WB 25ZS WB SRK20ZS WT 25ZS WT Models SRK...

Page 45: ...h1 Th21 Gas TH2 Heat exchanger sensor TH1 EEV Capillary tube Heat exchanger Model SRK50ZM S Indoor unit Outdoor unit Flare connection Flare connection Liquid pipe 6 35 Gas pipe 12 7 Service valve Heat...

Page 46: ...e conditions as follows The net cooling and heating capacity can be obtained in the following way Net capacity Capacity shown on specification Correction factors as follows 1 Coefficient of cooling an...

Page 47: ...apacity Piping length m Cooling Heating 7 1 0 1 0 10 0 99 1 0 15 0 975 1 0 20 0 965 1 0 25 0 95 1 0 Air inlet temperature of outdoor unit in CWB Adjustment coefficient 15 0 95 0 95 0 94 0 93 0 91 0 88...

Page 48: ...56 2 34 2 64 2 33 2 70 2 31 2 84 2 44 2 95 2 40 32 2 18 2 07 2 31 2 15 2 50 2 32 2 58 2 31 2 64 2 29 2 79 2 43 2 90 2 38 34 2 11 2 00 2 25 2 12 2 44 2 29 2 53 2 29 2 59 2 27 2 74 2 41 2 85 2 37 35 2...

Page 49: ...48 18 SRK T 250 8 APPLICATION DATA 1 Installation of indoor unit RLF012A100 Model SRK20 25 35 50 R410A REFRIGERANT USED...

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Page 51: ...50 18 SRK T 250...

Page 52: ...51 18 SRK T 250...

Page 53: ...52 18 SRK T 250...

Page 54: ...53 18 SRK T 250...

Page 55: ...54 18 SRK T 250...

Page 56: ...55 18 SRK T 250...

Page 57: ...56 18 SRK T 250 2 Installation of outdoor unit RWC012A068...

Page 58: ...57 18 SRK T 250...

Page 59: ...58 18 SRK T 250...

Page 60: ...59 18 SRK T 250...

Page 61: ...Where electrical components are being changed At all times the manufacturer s maintenance and service guidelines shall be followed If in doubt consult the manufacturer s technical department for assi...

Page 62: ...gerants are recovered safely Prior to the task being carried out an oil and refrigerant sample shall be taken in case analysis is required prior to re use of reclaimed refrigerant It is essential that...

Page 63: ...switch selects the CLEAN operation display brightness adjustment and PRESET operation ON TIMER button This button selects ON TIMER operation TIMER button This button is used for setting the current t...

Page 64: ...t one unit can be operated with only one remote control a Setting the wireless remote control i Slide the cover and take out the batteries ii Disconnect the switching line next to the battery with wir...

Page 65: ...n for 15 minutes continuously The wireless remote control displays HIGH POWER mark and the FAN SPEED display disappears a During the HIGH POWER operation the room temperature is not controlled When it...

Page 66: ...the power suppressed in order to avoid an excessive cooling or heating The unit operate 1 5 higher than the setting temperature during cooling or 2 5 lower than that during heating The wireless remote...

Page 67: ...uto operation a i ii Cooling Air flow selection Operation mode AUTO HI MED LO Heating Room temp Setting temp 5 C Room temp Setting temp 5 C Setting temp Room temp 5 C Setting temp Room temp 5 C HIGH P...

Page 68: ...eration is set the unit operates by dropping the outdoor fan speed and the compressor speed 13 Night setback operation When the night setback operation is set the heating operation starts with the set...

Page 69: ...This function can be used when it is necessary to adjust the brightness of unit display Note 1 When the unit displays self diagnosis or service mode brightness level is always LV2 Brightness level Run...

Page 70: ...d air are satisfied is satisfied Total compressor operation time After finish of defrost operation C or less for 3 minutes continuously Total compressor operation time 20 115rps 20 115rps 20 86rps 20...

Page 71: ...ls SRK35 50 Max 17 minutes and 30seconds Depends on an operation condition the time can be longer than 7 minutes 2 7 minutes Hot keep operation i Setting ii Contents of control Signal of wireless remo...

Page 72: ...is selected during heating cooling or DRY mode the unit is operated in the previous operation mode d Setting temperature can be adjusted within the following range There is the relationship as shown...

Page 73: ...d direction control is performed a When the vertical wind direction is set at other than the vertical swing the flaps change to the horizontal position b When the horizontal wind direction is set at o...

Page 74: ...erature is in the range of P2 P3 the speed is reduced by 6 rps at each 30 seconds 2 When the temperature is P3 or higher the compressor is stopped 3 When the outdoor heat exchanger temperature is in t...

Page 75: ...ature 50 50 44 30 50 Range A Range B 50 44 60 60 27 Release Release SRK20 25 35 SRK50 2 It checks the outdoor temperature TH2 once every hour to judge the operation range When either of the following...

Page 76: ...with the fuzzy calculation exceeds the upper limit the upper limit value is maintained The lower limit of compressor speed is set to 27 rps and even if the calculated result becomes lower than that a...

Page 77: ...shown in the figure below 3 Reset conditions 1 2 10 Reset conditions When either of the following condition is satisfied 1 The outdoor air temperature TH2 becomes 6 C 2 The compressor speed is 0 rps...

Page 78: ...rps 20 rps 20 rps item i ii is satisfied Once the unit is stopped by this function it is not min 1 100 110 C 90 100 C 90 100 C SRK20 35 SRK50 i ii i ii i ii air conditioning has elapsed air condition...

Page 79: ...st operation ii Contents of control 1 iii Reset condition When the compressor has been turned OFF 2 When the conditions of i above are satisfied the compressor stops Error stop occurs when the compres...

Page 80: ...G PROCEDURES FOR ELECTRICAL EQUIPMENT 1 Cautions 2 Items to check before troubleshooting 3 Troubleshooting procedure If the air conditioner does not run at all Important YES YES YES NO NO NO NO YES Re...

Page 81: ...80 18 SRK T 250 09 SRK DB 087D 4 Troubleshooting procedure If the air conditioner runs NO NO NO NO YES YES YES YES 81 82 88 82 88 service service...

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