Mitsubishi SRRM25ZE- Manuals

- 4 - Item Models STM25ZF-S STM35ZF-S STM50ZF-S STM60ZF-S Cooling capacity W 2500 3500 5000 6000 Heating capacity W 3400 4500 5800 6800 Noise level Cooling 35 38 40 47 dB 51 54 56 63 Heating 35 38 40 47 51 54 56 63 Exterior dimensions Main unit 248 × 570 × 570 Height × Width × Depth Panel mm 35 × 70...

- 6 - Item Models SCM40ZF-S SCM45ZF-S Cooling capacity W 4000 (1900 ~ 4900) 4500 (700 ~ 5600) Heating capacity W 5000 (1300 ~ 5200) 5600 (700 ~ 6800) Power source 1 Phase 220/230/240V 50Hz Power consumption Cooling W 970 (470 ~ 1470) 1390 (200 ~ 2160) Heating 1150 (450 ~ 1260) 1540 (200 ~ 2340) Runn...

- 9 - Model SCM40ZF-S (a) Heating A room B room Min. Standard Max. Power consumption (W) Standard current (A) Room cooling capacity (kW) Total capacity (kW) Min. Max. 220V 230V 240V Indoor unit combination Cooling capacity (kW) Standard room 2 room 1 20 3.0 – 1.3 3.0 3.9 450 770 1120 3.5 3.4 3.2 22 ...

- 12 - Model SCM48ZF-S (b) Cooling A room B room C room Min. Standard Max. Power consumption (W) Standard current (A) Room cooling capacity (kW) Total capacity (kW) Min. Max. 220V 230V 240V Indoor unit combination Cooling capacity (kW) Standard room 3 room 2 room 1 20 2.0 – – 1.1 2.0 2.2 200 640 800...

- 26 - VIEW A 45 14.5 60 788 5 60 45 815 A 250 117.5 580 117.5 148.5 216.5 216.5 8.2 44.5 236.1 5.7 450 450 67.5 42.7 47.2 175 44.5 216.5 216.5 148.5 53.5 Piping for Gas Drain hose 540 (ø16) Piping for Liquid 465.1 (ø6.35) Piping hole (ø65) Piping hole (ø65) ( ) 20,22,25,28,35: ø9.52 50: ø12.7 397.1...

- 29 - 2.4 Piping system Model SCM40ZF-S Outdoor unit Indoor unit Sensor Sensor (Th I -R 2 ) (Th I -R 1 ) (Th I -A) Sensor Sensor (Th O -C) Check joint Check joint Check joint Sensor (Th O -D) Sensor (Th O -A) Sensor (Th O -R) Heat exchanger Heat exchanger Liquid line Gas line (ø6.35) (ø6.35) (ø9.52...

- 32 - Model SCM60ZF-S Gas line Liquid line (ø 6.35) (ø 6.35) (ø 6.35) EEVA Strainer EEVB EEVC Service valve (Gas) Outdoor Unit Indoor Unit Sensor (Th I- R 2 ) Heat exchanger Sensor (Th I-A ) Sensor (Th I-R1 ) Sensor (Th O-D ) Sensor (Th O-A ) Accumlator Sensor (Th o-C ) Service valve (Liquid) Elect...

- 34 - 2.5 Selection chart Correct the cooling and heating capacity in accordance with the 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 and ...

- 35 - (2) Correction of cooling and heating capacity in relation to one way length of refrigerant piping It is necessary to correct the cooling and heating capacity in relation to the one way piping length between the indoor and outdoor units. (3) Correction relative to frosting on outdoor heat exc...

- 36 - 3 ELECTRICAL DATA Meaning of marks • Outdoor Unit • Indoor Unit FM I CF I SM Tr ZNR F Parts name Fan motor Capacitor (for FM I ) Flap motor Transformer Varistor Fuse Symbol DM FS Th I -A Th I -R 1 Th I -R 2 Parts name Drain motor Float switch Sensor (room temp.) Sensor (indoor H.X temp.) Sens...

- 37 - HEATEXCHANGER Power line(Outdoor unit) CNM F (250V 3.15A) Printed circuit board 1 52C-4 N ~ ~ ZNR WH 2/N 3 SM FM I BK RD WH Y/GN RD 1 3 4 5 6 WH BL CNU YL BK TB RD J Y/G G BK CNE CNG CNF Back upswitch Th I -A Th I -R 2 Th I -R 1 Display Wireless R-Amp Black BrownRedWhite Yellow/Green BK BRRDW...

- 43 - LO MED HI AUTO HI POWER ECONO ON OFF AM PM FAN SPEED button Each time the button is pushed, the indi- cator is switched over in turn. • The above illustration shows all controls, but in practiceonly the relevant parts are shown. OPERATION MODE select button Each time the button is pushed, the...

- 44 - Weekly timer display Displays the settings of the weekly timer. [Vent Indicator] Indicates operation in the Ventilation mode. Operation/Stop switch This switch is used to operate and stop the air conditioning system. Press the switch once to operate the system and press it once again to stop ...

- 45 - RUN (HOT KEEP) light (green) • Illuminates during operation. • Blinks at air flow stop due to the ‘HOT KEEP’. ECONO light (orange) Illuminates during ECONOMY operation. TIMER light (yellow) Illuminates during TIMER operation. HI POWER light (green) Illuminates during HIGH POWER operation. Mod...

- 46 - ¡ SRRM model 4.2 Unit ON/OFF button When the remote control batteries become weak, or if the remote control is lost or malfunctioning, this button may be used to turn the unit on and off. (1) Operation Push the button once to place the unit in the automatic mode. Push it once more to turn the...

- 47 - Thick line : Rapid movement Thin line : Slow movement Stops for approximately5 seconds in thehorizontal position. Stops for approximately5 seconds in thisposition. Thick line : Rapid movement Thin line : Slow movement Thick line : moves quickly Thin line : moves slowly Stops at this position ...

- 48 - (2) Memory flap While the flap is operating if the AIRFLOW button is pushed once, it stops swinging at an angle. As this angle is memorized in the microcomputer, the flap will be automatically set to the angle when next operation is started. ¡ Recommendable stopping angle of the flap Horizont...

- 51 - (2) Mode switching Within the selected mode, the unit operates using the values shown below which were obtained by multiplying a conversion coefficient to the indoor unit command speed. (a) SCM40ZF-S, 45ZF-S ◆ SKM model Model (Indoor) Operation Mode Automatic High Medium Low Hi power Econo 12...

- 53 - (4) Hot keep operation If the hot keep operation is selected during the heating operation, the indoor fan is controlled based on the temperature of the indoor unit heat exchanger (detected with Th I -R 1 ) Functional components Operation Command speed Indoor unit fan Compressor Outdoor unit f...

- 54 - F1 F1 R2rps Decision rps 300 pulse EEV control Opening in relation to conditions R1rps Decision rps 0rps Outdoor unit speed After compressor software has started According to rps Outdoor unit fan OFF ON 4-way valve OFF 470 pulse fully opened 250 pulse Electronic expansionvalve EEV(Operating u...

- 55 - 4) Conditions for finishing defrosting When any of the following conditions is met, the defrosting finishing operation will start. 1 When the temperature of the outdoor heat exchanger sensor (Tho-R) is 20 ° C or more. 2 When 10 minutes has passed after the start of defrosting. 3 When the temp...

- 56 - 4.10 Determining the operating mode The cooling and heating operating modes are the remote control switch mode that have been previously determined. If a mode differing from these is selected after this, the selected mode will appear in the display of the remote control, but only the fan will...

- 58 - 4.13 Control and protection functions (1) Frost prevention for indoor heat exchanger (During cooling or dehumidifying) ⽧ < I > (a) Operating condition After the indoor command speed is other than 0 rps for 9 minutes, when the indoor heat exchanger (Th I -R 1 ) is 2 ° C or lower for 1min...

- 60 - (5) Freezing cycle system protective control (a) Operating conditions: When both of following conditions have continued for more than 5 minutes later than 5 minutes after the start of operation. 1) Indoor command speed is higher than 0 rps 2) During cooling, dehumidifying: Indoor heat exchang...

- 61 - < II > (a) Operating conditions: When the outdoor air temperature sensor (Th O -A) is 22 ° C or lower continues for 30 seconds while decision speed is other than 0 rps. (b) Detail of operation: 1 The lower limit of decision speed is set to B (or D) rps and even if the speed becomes lowe...

- 62 - (13) Current safe control (a) When converter in port current is detected at the current sensor (CT) and it exceeds the set amperage, the decision speed is reduced. This is rechecked after one second and if it still exceeds the set amperage, the decision speed is reduced 2 rps. (b) If the deci...

- 63 - (17) Power transistor overheat protection (a) Purpose: In order to prevent the power transistor overheating during operation, faulty controller operations, deterioration, damage and so on occurs. (b) Detail of operation: 1 Power transistor sensor temperature => 110 ° C The compressor is st...

- 64 - (19) Compressor lock If the motor for the compressor does not turn 1/12 revolution 0.044 seconds after it has been started, it is determined that a compressor lock has occurred and the compressor is stopped. (20) Discharge pipe sensor disconnection protection control (a) When the decision spe...

- 66 - 5 APPLICATION DATA SAFETY PRECAUTIONS ¡ Please read these “Safety Precautions” first then accurately execute the installation work. ¡ Though the precautionary points indicated herein are divided under two headings, WARNING and CAUTION , those points which are related to the strong possibility...

- 67 - 5.1 Installation of indoor unit (1) Wall mounted type (SKM) (a) Caution for installation 1) The system should be applied to places as households, residences and the like. 2) The equipment shall be installed in accordance with national wiring regulations. 3) The connection to the fixed wiring ...

- 68 - 3) Mounting of interconnecting wires (Field wiring) a) Remove the lid.b) Remove the terminal block cover.c) Connect the connection wire securely to the terminal block. Cautions when piping from the left and the rear center of the unit Pipe Drain hose Left Side Piping Left rear piping Right re...

- 69 - ¡ Pour water in the drain pan below the heat exchanger and confirm that the water is drained outside. ¡ If the extension drain hose is indoors, make sure it is insulated using a shielding pipe (not supplied). 5) Securing the Indoor Unit to the Installation Board Drainage Too high It curves li...

- 70 - (b) Installation of indoor unit 1) Installation dimensions To be installed at site Ceiling opening 660 (For conventional ceiling) Hanging bolt pitch 530 Control box Drain hose(accessory) Inspection port(For conventional ceiling) PANEL Air outlet Air intake Hanging fixture 45 or more 197 137 1...

- 73 - C. Attaching the panel 1) <Accessory items> (It is attached to the panel.) a) Make sure that the unit main body is positioned at the correct height and the opening on the ceiling is made to the correct dimensions with the level gauge supplied with the main body. Remove the level gauge b...

- 74 - k) Attach two chains to the intake grille with two screws. [ Figure 7]l) Replace the corner panels. Please also close a chain with a screw together then. m) Close the intake grille. (3) Ducted type (SRRM) (a) Caution for installation Install the unit with the customer's consent at location th...

- 76 - 6) Installing the Main Unit • Attach the washers and nuts to the ceiling hanging bolts. • Attach the hanging tool to the above nuts, and tighten the nuts. • If it is not leveled, the float switch may malfunction or may not start. 8) Connecting the Drain Hose • Insert the drain hose as far as ...

- 77 - (2) Installation of outdoor unit (a) Make sure that sufficient space for installation and service is secured. (b) Fix the leg sections of the unit on a firm base which will not play. Attach cushion pads, etc. between the unit and the mounting fixtures not to transmit vibration to the building...

- 78 - 5.4 Electrical wiring [POWER SUPPLY CODE] CENELEC code for cables required field cables. H05RNR3G4.0 (e) After connecting the power supply wires, make sure to secure the wires with wiring clamps. (2) Connecting the outside/inside crossover wires (a) Ensure that crossover wiring is matched wit...

- 79 - 5.5 Refrigerant Piping (1) Limit The maximum permissible length of the refrigerant pipes for the outdoor units, and the maximum permissible height difference for the outdoor units are as shown below. * If the total length for all the rooms exceeds the length of chargeless refrigerant pipe, ad...

- 80 - (4) Additional refrigerant charge ¡ SCM40, 48 typeAdditional refrigerant charge is not required at all ¡ SCM45, 60, 80 type (a) When the total refrigerant pipe length for all the rooms exceeds the length of the uncharged pipe, additional refrigerant is required. (b) For this multi type room a...

- 82 - D unit D CB A C unit B unit A unit Outdoor unit Indoor unit Indoor unit PipingWiring D unit D CB A C unit B unit A unit Outdoor unit Z Y X Z Y X Z Y X Z Y X Z Y X Z Y X Z Y X Indoor unit (1)Address [0] Red White Black Remote controller Indoor unit (2)Address [1] Indoor unit (16)Address [F] Re...

- 83 - 2) Recessed fitting a) The Electrical box and remote control (shield wire must be use in case of extension) are first embedded. (2) Installation of wired remote control (Optional parts) (a) Selection of installation location Avoid the following locations1) Direct sunlight.2) Close to heating ...

- 84 - (3) Setting functions using the wired remote control (a) The default settings of this unit's functions are as follows: If you want to charge a setting, follow the procedure found in the installation manual and set to your desired setting. For the method of setting, please refer to the install...

- 85 - (b) Function setting method 1) Stop the air conditioner 2) Press the SET and MODE buttons simultaneously for 3 seconds or longer. The screen display will be switched as follows: “ SELECT ITEM” “ SET" “FUNCTION SET ” 3) Press the SET button. The unit will enter the function setting mode. T...

- 86 - When “I/U FUNCTION ” is selected. 1 The screen display will be switched as follows:“ I/U SELECT” “ SET” “I/U No.00” (blinking) 2 Press either or button. Select the indoor unit number that you want to change settings. If only one indoor unit is connected, the indoor unitnumber will not charge,...

- 87 - 12 Function No. A (Example) If the upper limit is set at 28˚C Function Contents B Setting Contents C TEMP RANGE SET DISP CHANGE NO DISP CHANGE Control Contents The remote control’s display and sent data upper limit changes to 28 ° C. The remote control’s display upper limit remains at 30ºC an...

- 89 - (d) Installation procedure 1) Mount the duct for the air inlet grille to the indoor unit using the 10 tapping screws provided. The tapping screws on the drain pan receiver side are also used for mounting the duct for the air inlet grille. They must first be removed and reinstalled after the d...

- 90 - Indoor unit (Flat surface drawing) 215 310 215 125 230 97 455 570 310 130 130 97 Round duct connection port 95 95 190 ø 150 (3) Duct joint for air outlet plate (a) Part No. : RFJ22 This duct joint is to be used for the connection of a round duct (ø 150 mm) to an indoor unit. (b) Part list (d)...

- 91 - ◆ Air flow and external static pressure characteristics (Heating: Hi) ◆ Air inlet grille air flow and friction loss characteristics (Part No.: RTS12) Air flow (m 3 /min) Pressure loss Pa 2 3 4 5 6 7 8 9 10 30 20 10 0 SRRM50ZE-S SRRM60ZE-S SRRM35ZE-S SRRM25ZE-S ! " " ! " " # $ ...

- 92 - (4) Drain up kit (a) Part No. : RDU12E (b) Accessories (d) Installation of drain up kit 1) Fix the drain up kit on the right side of the inside unit with tap screws. 2) Insert the drain hose fully and securely to the drain sockets of the inside unit and the drain up kit. 3) Connect the drain ...

- 94 - 6 MAINTENANCE DATA 6.1 Trouble shooting (1) Trouble shooting to be performed prior to exchanging PCB, (Printed circuit board) [Common to all models] All the models described in this chapter are controlled by a microcomputer. When providing maintenance service to customers it is necessary to u...

- 95 - (2) Indication of self diagnosis Indoor unit indicator Outdoor unit indicator (LED 5) Wired remote control display(optional parts) Description of trouble Cause Conditions of flashing On for 4 sec-onds and off for 4 seconds Outdoor heat exchan-ger sensor error Indoor heat exchanger sensor (1) ...

- 96 - (3) Inspection procedures corresponding to detail of trouble Sensor error [Broken sensor wire,connector poor connection] (Shortcircuit) (Broken wire) Is connector connection good? YES YES NO NO Replace PCB. Correct connection. Replace sensor. Is sensor resistance value good? ◆ S e n s o r t e...

- 99 - Rotor lock [Compressor defect, outdoorunit circuit defect] Outdoor fan motor error [Defective fan motor, connectorpoor connection, defective PCB] Is connector connection good? YES NO NO Is the output of the outdoor unit’sprinted circuit board normal? Normal NO YES YES Correct connector connec...

- 100 - (5) Checking the indoor electrical equipment (a) Indoor unit circuit board check procedure Is there voltage between terminal blocks 1 and 2 ? (AC 220/230/240 V) Indoor electrical components are normal. Is the voltage between terminal blocks 2 and 3 oscillating between DC 0 and 12V? Inspect p...

- 101 - (6) How to make sure of remote control Is remote control normal? YES Again pushingoperating switch Operating the unit? NO Does unit ON/OFFbutton operates? Operating the unit. NO NO YES YES Remote controldefects Abnormality is notfound. LO MED HI AUTO HI POWER ECONO ON OFF AM PM (a) Press the...

- 103 - BK 250V 15A FUSE 1 Phase 220-240V 50Hz Power Source BK L T2 T1 A UNIT EARTH Y/G Y/G 3 2 1 WH N BK WH RD OR OR N_1 P_1 BK RD N_1 P_1 DC-N DC-P PWB3 (CAPACITOR) BK RD CNG PWB1 (MAIN) PWB2 (POWER) A EEV B EEV HEATER CNC CNT CNK CNJ CND CNB FMo 20S L-1 AC.N AC.N AC.L AC.L BL GR BL GR L AF_L2 AF_...

- 107 - Output voltage (ACV) (Example)Self-diagnosis display : Flashes 2 times Measure in this section Operation SW ON 8 ~ 10 sec. 0 1 ◆ Power transistor inspection procedure [Use a tester with a needle indicator for the inspection. (Do not use a digital tester. Check in the AC 300 volt range.)] 1) ...

- 108 - Liquid side Gas side Check joint Service hose Charge hose Vacuumpump Refrigerantcylinder Gaugemanifold 6.2 Servicing (1) Evacuation The evacuation is an procedure to purge impurities ...... noncondensable gas, air, moisture from the refrigerant equipment by using a vacuum pump. Since the ref...

- 109 - 7 REFRIGERANT PIPING INSTALLATION/SERVICINGMANUAL FOR AIR CONDITIONERS USING R410A (These materials are extracted from document issued by The Japan Refrigeration and Air Conditioning Industry Association) 7.1 Outline 7.1.1 Refrigerant R410A (1) Adoption of R410A in air conditioners In 1974, ...

- 110 - (3) Lubricating oils for R410A As the lubricating oils for R22, mineral oils, alkylbenze synthetic oils, etc. have so far been used. As R410A features less solubility with these conventional lubricating oils such as mineral oils, the lubricating oils tend to stay within the refrigeration cyc...

- 116 - Fig.5 Prevention of oxidation during brazing Flow meter Stop valve Reducing valve Piping Rubber plug for sealing From the nitrogen cylinder Nitrogen gas Nitrogen gas M * Cautions during brazing 1 General cautions 1) The brazing strength should be high as required. 2) After operation, airtigh...

- 119 - 7.3.2 New installation work (when using new refrigerant piping) (1) Air purge by vacuum pump and gas leakage inspection (see Fig. 6) a) Connect the charge hose to the outdoor unit. 1 b) Connect the charge hose to the vacuum pump adapter. 2 At this time, keep the control valves in the fully c...

- 120 - f) After charging liquid refrigerant into the air conditioner by closing the charging valve, stop operation by fully closing the gauge manifold’s valve Lo . 2 5 g) Quickly remove the charge hose from the service port. 6 When stopped halfway, refrigerant being cycled will be released. h) Afte...

- 121 - 7.3.6 Refrigerant recharging at servicing When it becomes necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps. (For details, see the instruction manual prepared by the equipment manufacturer) 1) Connect the charge hose to the out...

INVERTER MULTI-SPLIT SYSTEMROOM AIR-CONDITIONER Air-Conditioning & Refrigeration Systems Headquarters 16-5, 2-chome, Kounan, Minato-ku, Tokyo, 108-8215, Japan Fax: (03) 6716-5926