Mitsubishi Electric SLZ Series Technical & Service Manual
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Mitsubishi Electric SLZ Series Technical & Service Manual

Mitsubishi Electric SLZ Series Technical & Service Manual

Split-system heat pump
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SPLIT-SYSTEM HEAT PUMP
Technical & Service Manual
Indoor unit
[Model Name]
[Service Ref.]
SLZ-AF09NL-U1
SLZ-AF09NL
SLZ-AF12NL-U1
SLZ-AF12NL
SLZ-AF15NL-U1
SLZ-AF15NL
SLZ-AF18NL-U1
SLZ-AF18NL
Contents
Service manual
1. REFERENCE MANUAL ...................... 2
2. SAFETY PRECAUTION ...................... 3
4. SPECIFICATIONS ............................. 10
6. WIRING DIAGRAM ............................ 13
8. TROUBLESHOOTING ....................... 15
9. SPECIAL FUNCTION ........................ 32
10. 4-WAY AIRFLOW SYSTEM ............... 33
12. REMOTE CONTROLLER .................. 40
Revision:
• "T1. SPECIFICATIONS
CONNECTED TO
OUTDOOR UNITS" has
been revised in REVISED
EDITION-A.
OCD857 is void.
REVISED EDITION-A
R454B
Model name
indication
WIRED REMOTE CONTROLLER
WIRELESS REMOTE
CONTROLLER
(Option)
Technical data
T1. SPECIFICATIONS CONNECTED TO
OUTDOOR UNITS ···························· 60
T2. POSITION OF THE CENTER OF
GRAVITY ········································ 62
T3. PERFORMANCE CHART ·················· 63
T4. AIRFLOW DATA ······························ 69
January 2025
No. OCD857
INDOOR UNIT
ON
RETURN SELECT
MENU
HOLD
OFF
(Option)

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  • Page 1: Table Of Contents

    SPLIT-SYSTEM HEAT PUMP January 2025 No. OCD857 REVISED EDITION-A Technical & Service Manual R454B Indoor unit [Model Name] [Service Ref.] SLZ-AF09NL-U1 SLZ-AF09NL SLZ-AF12NL-U1 SLZ-AF12NL Model name SLZ-AF15NL-U1 SLZ-AF15NL indication SLZ-AF18NL-U1 SLZ-AF18NL INDOOR UNIT Revision: • "T1. SPECIFICATIONS CONNECTED TO OUTDOOR UNITS" has RETURN SELECT MENU HOLD...

  • Page 2: Reference Manual

    REFERENCE MANUAL OUTDOOR UNIT’S SERVICE MANUAL Model Name Service Ref. Service Manual No. / Parts catalog No. MXZ-2D20NL MXZ-2D20NL-U1 MXZ-3D24NL MXZ-3D24NL-U1 MXZ-4D30NL MXZ-4D30NL-U1 OBH949 / OBB949 MXZ-5D36/42NL MXZ-5D36/42NL-U1 MXZ-2D20NLHZ MXZ-2D20NLHZ-U1 MXZ-3D24/30NLHZ MXZ-3D24/30NLHZ-U1 MXZ-SM36/48/60NL MXZ-SM36/48/60NL-U1 OCH819 / OCB819 MXZ-SM36/42/48NLHZ MXZ-SM36/42/48NLHZ-U1 OCH879 / OCB879 SUZ-AA09/12/15NL SUZ-AA09/12/15NL-U1 SUZ-AA18NL...

  • Page 3: Safety Precaution

    SAFETY PRECAUTION MEANINGS OF SYMBOLS DISPLAYED ON THE UNIT WARNING This unit uses a flammable refrigerant. If the refrigerant leaks and comes in contact with fire or a heating part, it will create a harmful gas and there is a risk of fire. Read the OPERATION MANUAL carefully before operation.

  • Page 4: Cautions For Service

    [1] Warning for service (1) Do not alter the unit. (2) For installation and relocation work, follow the instructions in the Installation Manual and use tools and pipe components specifically made for use with refrigerant specified in the outdoor unit installation manual. (3) Ask a dealer or an authorized technician to install, relocate and repair the unit.
  • Page 5 [4] Cautions for unit using R454B refrigerant Basic work procedures are the same as those for conventional units using refrigerant R410A. However, pay careful attention to the following points. (1) Information on servicing (1-1) Checks to the area Prior to beginning work on systems containing FLAMMABLE REFRIGERANTS, safety checks are necessary to ensure that the risk of ignition is minimized.
  • Page 6 (3) Repair to intrinsically safe components Intrinsically safe components must be replaced. (4) Cabling Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.
  • Page 7 a) Become familiar with the equipment and its operation. b) Isolate system electrically. c) Before attempting the procedure, ensure that: • mechanical handling equipment is available, if required, for handling refrigerant cylinders. • all personal protective equipment is available and being used correctly. •...

  • Page 8: Service Tools

    Unit Electronic weighing scale [4] Service tools Use the below service tools as exclusive tools for R454B refrigerant. Tool name Specifications · Only for R454B · Use the existing fitting specifications . (UNF1/2) Gauge manifold · Use high-tension side pressure of 768.7 PSIG [5.3 MPa.G] or over. ·...

  • Page 9: Parts Names And Functions

    PARTS NAMES AND FUNCTIONS Filter Removes dust and pollutants Horizontal Air Outlet from drawn in air. Sets horizontal airflow automatically during cooling or dehumidifying. Grille Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. Air Intake Draws in air from room.

  • Page 10: Specifications

    SPECIFICATIONS Indoor unit service ref. SLZ-AF09NL-U1 SLZ-AF12NL-U1 SLZ-AF15NL-U1 SLZ-AF18NL-U1 Mode Cooling Heating Cooling Heating Cooling Heating Cooling Heating Power supply (phase, cycle, voltage) 1-phase 208/230 V, 60 Hz Input 0.02 0.02 0.02 0.02 0.03 0.03 0.04 0.04 Current* 0.20 0.15 0.24 0.19 0.32...
  • Page 11 NOISE CRITERION CURVES <60Hz> <60Hz> SLZ-AF09NL-U1 SLZ-AF12NL-U1 NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE High High Medium Medium NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR HEARING FOR NC-20 NC-20 CONTINUOUS CONTINUOUS NOISE NOISE...

  • Page 12: Outlines And Dimensions

    OUTLINES AND DIMENSIONS Unit: mm (in.) OCH857...

  • Page 13: Wiring Diagram

    WIRING DIAGRAM *3 This refrigerant sensor shall only be replaced with manufacturer approved sensor. Ce capteur de réfrigérant ne doit être remplacé que par un capteur approuvé par le fabricant. CNSA REFRIGERANT SENSOR *1 Use copper supply wires. Utiliser des fils d'alimentation en cuivre. *2 Be sure to turn off the source power and then disconnect fan motor connector.

  • Page 14: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM Strainer Heat exchanger Refrigerant GAS pipe connection (Flare) Condenser/evaporator temperature thermistor (TH5) Refrigerant flow in cooling Refrigerant flow in heating Refrigerant LIQUID pipe connection (Flare) Pipe temperature thermistor/liquid Room temperature (TH2) thermistor (TH1) Strainer Distributor with strainer Refrigernt pipe diameter Unit : mm (in.) Model...

  • Page 15: Troubleshooting

    TROUBLESHOOTING 8-1. TROUBLESHOOTING <Check code displayed by self-diagnosis and actions to be taken for service (summary)> Present and past check codes are logged, and they can be displayed on the wired remote controller or controller board of out- door unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summa- rized in the table below.
  • Page 16 [Output pattern A] Errors detected by indoor unit Wired remote Wireless remote controller controller Symptom Remark Beeper sounds/OPERATION INDICATOR lamp blinks Check code (Number of times) Intake sensor error P2, P9 Pipe (liquid or 2-phase pipe) sensor error E6, E7 Indoor/outdoor unit communication error Float switch connector open Drain pump error...
  • Page 17 ● If the unit cannot be operated properly after test run, refer to the following table to fi nd the cause. Symptom Cause Wired remote controller LED 1, 2 (PCB in outdoor unit) Please Wait For about 3 After LED 1, 2 are lit, LED 2 is turned •...
  • Page 18 Note: Errors to be detected in outdoor unit, such as codes starting 8-3. SELF-DIAGNOSIS ACTION TABLE with F, U or E (excluding E0 to E7), are not covered in this document. Please refer to the outdoor unit's service manual for the details. Check code Abnormal point and detection method Cause...
  • Page 19 *1: only P-series outdoor unit Check code Abnormal point and detection method Cause Countermeasure Drain pump lock protection operation Malfunction of drain pump Check if drain pump works. Suspected abnormality, if drain pump stops for Clogged drain pump 5 seconds continuously with drain pump on. Disconnected drain pump Check if connector (CNP) is connected.
  • Page 20 *1: only P-series outdoor unit Check code Abnormal point and detection method Cause Countermeasure Pipe temperature thermistor/Condenser/ Evaporator (TH5) The unit is in 3-minute resume protection Defective thermistor – Check resistance value of thermistor. mode if short/open of thermistor is detected. characteristics For characteristics, refer to (P1).
  • Page 21 Check code Abnormal point and detection method Cause Countermeasure Remote controller transmission error(E3)/ signal receiving error(E5) 2 remote controllers are set as Set a remote controller to main, and the Abnormal if remote controller could not find “main.” other to sub. blank of transmission path for 6 seconds (In case of 2 remote controllers) and could not transmit.
  • Page 22 Check code Abnormal point and detection method Cause Countermeasure Remote controller control board Abnormal if data cannot be normally read Defective remote controller Replace remote controller. from the nonvolatile memory of the remote controller control board.(Check code: E1) (6201 Abnormal if the clock function of remote 6202) controller cannot be normally operated.
  • Page 23 8-4. TROUBLESHOOTING OF PROBLEMS Note: Refer to the manual of outdoor unit for the detail of remote controller. *1: only P-series outdoor unit Phenomena Cause Countermeasure (1) LED2 on indoor controller • When LED1 on indoor controller board is also off. board is off.
  • Page 24 Note: Refer to the outdoor unit's service manual for the detail of remote controller. Phenomena Cause Countermeasure (3) Upward/downward vane The vane is not downward during defrosting Normal operation (The vane is set to horizontal performance failure and heat preparation and when the thermostat regardless of remote control.) is OFF in HEAT mode.
  • Page 25 (FL): Refrigerant leakage Abnormal points and detection methods Causes and checkpoints Refrigerant is leaking from the air conditioner. • Refrigerant leak from air conditioner The refrigerant sensor has detected refrigerant leak. • Refrigerant leak from piping Refrigerant is leaking in the room where the alarm is beep- •...
  • Page 26 (FH): Refrigerant sensor error Abnormal points and detection methods Causes and checkpoints A refrigerant sensor has failed. • A refrigerant sensor connected to an M-IC has failed. • A Sensor and Alarm Kit connected to a branch box has failed. Diagnosis of failure Check the display of the remote controller or the 7-segment LED on the outdoor controller board...

  • Page 27: Test Point Diagram

    8-5. TEST POINT DIAGRAM Indoor controller board LED2 CN90 CN4Z CN4Z Power supply supply CN22 Connect to the wireless i-see Sensor (Sensor) i-see Sensor (S (Wired remote controller) remote controller) remote controller board (CNB) ller board (CNB) Connect to the terminal black (TB5) (Remote controller transmission line) Vane motor (MV) motor (MV)
  • Page 28 8-6. FUNCTION OF DIP SWITCH Each function is controlled by the DIP switch on the indoor controller board. Model setting and capacity setting are preset in the nonvolatile memory of the indoor controller board. ■ The black square ( ) indicates a switch position. Switch Functions Setting by the DIP switch and jumper wire...
  • Page 29 8-7. TROUBLESHOOTING OF MAIN PARTS Parts name Checkpoints Room temperature Measure the resistance with a multimeter. thermistor (TH1) (Parts temperature 50 to 86°F) Pipe temperature Normal thermistor/liquid (TH2) 4.3 to 9.6 k Condenser/evaporator temperature thermistor (TH5) (Refer to "8-7-1. Thermistor Characteristic Graph") Vane motor (MV) Measure the resistance between the terminals with a multimeter.
  • Page 30 Parts name Check method and criterion Refrigerant sensor Measure the resistance between the terminals with a multimeter. Normal Abnormal Below 10 Open (10 After turning off the indoor unit breaker and leaving it for 5 minutes, measure the resistance value between the sensor terminals. <...
  • Page 31 8-7-2. DC Fan Motor (Fan Motor/Indoor Controller Board) Check method of DC fan motor (fan motor/indoor controller circuit board) Notes · High voltage is applied to the connector (CNMF) for the fan motor. Pay attention to the service. board and fan motor.) (It causes trouble of the indoor controller circuit Self check Symptom: The indoor fan cannot rotate.

  • Page 32: Special Function

    SPECIAL FUNCTION 11-2. BACK-UP HEATING FUNCTION 11-2-1. Operation The back-up heater turns ON when both of the following conditions have been satisfied: A) When the heater ON delay time has passed and the room temperature, which is measured every minute, has not increased three times in a row compared with the temperature before the heater ON delay time started.

  • Page 33: Way Airflow System

    4-WAY AIRFLOW SYSTEM 10-1. FRESH AIR INTAKE (LOCATION FOR INSTALLATION) At the time of installation, use the duct holes (cut out) located at the positions shown in following diagram, as and when required. Fresh air intake Detail drawing of fresh air intake Unit: mm (in.) (5-16/32) Burring hole...
  • Page 34 10-4. FIXING HORIZONTAL VANE Horizontal vane of each air outlet can be fixed according to the environment where it is installed. Setting procedure 1) Turn off the main power supply (Turn off the breaker). 2) Remove the vane motor connector in the direction of the arrow shown below with pressing the unlocking button as in the figure below.

  • Page 35: Disassembly Procedure

    DISASSEMBLY PROCEDURE NOTE:Turn OFF the power supply before disassembly. Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the air intake grille and air filter Figure 1 Grille hook (1) Slide the knob of air intake grille to the direction of the arrow to open the air intake grille.
  • Page 36 OPERATING PROCEDURE PHOTOS/FIGURES Photo 4 3. Removing the electrical parts (1) Loosen the 2 screws on the control box cover. Control box cover (2) Slide the control box cover as indicated by the arrow to remove. <Electrical parts in the control box> •...
  • Page 37 OPERATING PROCEDURE PHOTOS/FIGURES 6. Removing the pipe temperature thermistor/liquid (TH2) Photo 8-1 and pipe temperature thermistor/gas (TH5) Fan motor Pipe temperature Band cable thermistor/gas (TH5) (1) Remove the panel. (Refer to procedure 2) (2) Remove the room temperature thermistor (TH1). (Refer to procedure 4) (3) Remove the drain pan.
  • Page 38 OPERATING PROCEDURE PHOTOS/FIGURES 8. Removing the fan motor (MF) Photo 9 Clamps Motor lead (1) Remove the panel. (Refer to procedure 2) cover Band (2) Remove the room temperature thermistor (TH1). (Refer to procedure 4) (3) Remove the drain pan. (Refer to procedure 5) Turbo fan (See Photo 3) (4) Remove the nut and washer from the turbo fan.
  • Page 39 OPERATING PROCEDURE PHOTOS/FIGURES 9. Removing the drain pump (DP) and float switch (FS) Photo 11 (1) Remove the panel. (Refer to procedure 2) Clamp Drain pump fi xing screws (2) Remove the room temperature thermistor (TH1). (Refer Screw Inner cover to procedure 4) (3) Remove the control box cover.

  • Page 40: Remote Controller

    REMOTE CONTROLLER 12-1. REMOTE CONTROLLER FUNCTIONS <PAR-42MAAUB> Controller interface The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen. When the system is centrally controlled, the button function guide that corresponds to the locked button will not appear.
  • Page 41 Display The main display can be displayed in two different modes: “Full” and “Basic”. The initial setting is “Full”. To switch to the “Basic” mode, change the setting on the Main display setting. (Refer to operation manual included with remote controller.) <Full mode>...
  • Page 42 Menu structure Main menu Press the button. MENU Move the cursor to the desired item with the buttons, and press the button. SELECT/HOLD Operation Vane · 3D i-See · Vent. (Lossnay) High power Comfort Manual vane angle 3D i-see Sensor Timer menu Timer ON/OFF timer...
  • Page 43 Continue from the previous page. Maintenance menu Error information Filter information Cleaning Auto descending panel Descending operation Descending adjustment Refrigerant leak info Service menu Test run menu Test run Drain pump test run RC alarm test Maintenance information Collect model names and serial No. Model name input Serial No.
  • Page 44 Main menu list Main Setting and display items Setting details menu Operation Vane•3D i-See•Vent. Vane: Use to set the vertical air direction. (Lossnay) Louver: Use to set the horizontal air direction. Vane · Louver · Vent. 3D i-See sensor: This setting is available only for the air (Lossnay) conditioners that support easy setting function of motion sensing air direction.
  • Page 45 Setting and display Main menu Setting details items Initial Display Main display Use to switch between "Full" and "Basic" modes for the Main display, and use setting setting to change the background colors of the display to black. Display de- Make the settings for the remote controller related items as necessary.

  • Page 46: Controller Interface

    <PAR-SL101A-E> Controller interface Transmission area Remote controller display Set Temperature buttons OFF/ON button Mode button (Changes operation mode) Fan Speed button (Changes fan speed) Airfl ow button (Changes up/ i-see button* down airfl ow direction) Timer ON button Menu button Timer OFF button SET/SEND button Weekly timer ON/OFF button*...

  • Page 47: Error Information

    12-2. ERROR INFORMATION When an error occurs, the following screen will appear. Check the error status, stop the operation, and consult your dealer. 1. Check code, error unit, refrigerant address, model name, and se- Error information rial number will appear. Error code The model name and serial number will appear only if the informa- Error unit...
  • Page 48 • Checking the error information Maintenance menu While no errors are occurring, page 2/2 of the error information can be Error information viewed by selecting "Error information" from the Maintenance menu. Filter information Errors cannot be reset from this screen. Cleaning Refrigerant leak info Main menu: RETURN...

  • Page 49: Service Menu

    12-3. SERVICE MENU Maintenance password is required 1. Select "Service" from the Main menu, and press the [SELECT/HOLD] button. Main Main menu *At the main display, the menu button and select "Service" to make the Service maintenance setting. 2. When the Service menu is selected, a window will appear asking for the pass- Service menu word.

  • Page 50: Test Run Operation

    12-4. TEST RUN 12-4-1. PAR-42MAAUB 1. Select "Service" from the Main menu, and press the [SELECT/HOLD] button. Test run Input maintenance info. Settings Check Select "Test run" with the F1 or F2 button, and press the [SELECT/HOLD] button. Others : RETURN SELECT MENU RETURN...
  • Page 51 12-4-2. PAR-SL101A-E 1. Press the button to stop the air conditioner. • If the weekly timer is enabled ( is on), press the button to disable it ( is off). 2. Press the button for 5 seconds. • comes on and the unit enters the service mode. 3.

  • Page 52: Function Setting

    12-5. FUNCTION SETTING 12-5-1. PAR-42MAAUB Settings menu Function setting 1. Select "Service" from the Main menu, and press the [SELECT/HOLD] button. Rotation setting RC operation setting CN24 settings Select "Setting" from the Service menu, and press the [SELECT/HOLD] button. Service menu: MENU Select "Function setting", and press the [SELECT/HOLD] button.
  • Page 53 12-5-2. PAR-SL101A-E 1. Going to the function select mode Press the button between of 5 seconds. (Start this operation from the status of remote controller display turned off .) [CHECK] is lit and "00" blinks. (Fig. 1) Press the button to set the "50". Direct the wireless remote controller toward the receiver of the indoor unit and press the button.

  • Page 54: Error History

    12-6. ERROR HISTORY 1. Select "Service" from the Main menu, and press the [SELECT/HOLD] button. Test run Input maintenance info. Settings Check Others : RETURN Select "Check" with the F1 or F2 button, and press the [SELECT/HOLD] button. SELECT MENU RETURN HOLD 2.

  • Page 55: Self-Diagnosis

    12-7. SELF-DIAGNOSIS 12-7-1. PAR-42MAAUB 1. Select "Service" from the Main menu, Diagnosis and press the [SELECT/HOLD] button. Self check Remote controller check Select "Check" from the Service menu, and press the [SELECT/HOLD] button. Service menu: MENU Cursor Select "Diagnosis" from the Check menu, and press the [SELECT/HOLD] button.
  • Page 56 12-7-2. PAR-SL101A-E button 1 to stop the air conditioner. 1. Press the button 3 is on), press the is off). to disable it ( 2. Press the button 2 for 5 seconds. 3. Press the button 5 to select the refrigerant address (M-NET address) B of the indoor button 4.

  • Page 57: Remote Controller Check

    12-8. REMOTE CONTROLLER CHECK If operations cannot be completed with the remote controller, diagnose the remote controller with this function. 1. Select "Service" from the Main menu, and Diagnosis press the [SELECT/HOLD] button. Self check Remote controller check Select "Check" from the Service menu, and press the [SELECT/HOLD] button.
  • Page 58 12-9. SMOOTH MAINTENANCE Check menu 1. Select "Service" from the Main menu, and press the [SELECT/HOLD] button. Error history Diagnosis Smooth maintenance Request code Select "Check" with the F1 or F2 button, and press the [SELECT/HOLD] button. Service menu: MENU Cursor Select "Smooth maintenance"...

  • Page 59: Request Code

    Refrigerant address Single refrigerant system Multi refrigerant system (group control) In the case of single refrigerant system, the refrigerant address Up to 16 refrigerant systems (16 outdoor units) can be con- is "00" and no operation is required. nected as a group by 1 remote controller. To check or set the Simultaneous twin, triple units belong to this category refrigerant addresses.

  • Page 60: Outdoor Units

    SPECIFICATIONS CONNECTED TO OUTDOOR UNITS Model name Indoor unit SLZ-AF09NL SLZ-AF12NL SLZ-AF15NL SLZ-AF18NL Outdoor unit SUZ-AA09NL SUZ-AA12NL SUZ-AA15NL SUZ-AA18NL Cooling at 95°F Max. Capacity Btu/h 9,000 12,000 15,000 18,000 Rated Capacity Btu/h 9,000 12,000 15,000 18,000 Min. Capacity Btu/h 2,200 2,900 3,500 5,200...
  • Page 61 Model name Indoor unit SLZ-AF09NL SLZ-AF12NL SLZ-AF15NL SLZ-AF18NL Outdoor unit SUZ-AA09NLHZ SUZ-AA12NLHZ SUZ-AA15NLHZ SUZ-AA18NLHZ Cooling at 95°F Max. Capacity Btu/h 9,000 12,000 15,000 18,000 Rated Capacity Btu/h 9,000 12,000 15,000 18,000 Min. Capacity Btu/h 5,100 5,100 5,200 5,200 Total Input 1,180 1,500 EER2...

  • Page 62: Indoor Unit

    OUTLET AIR SPEED AND COVERAGE Airfl ow Air speed Coverage Model Function (CFM) (ft/s) (ft) SLZ-AF09NL 19.7 15.1 SLZ-AF12NL 22.0 16.9 SLZ-AF15NL 26.7 20.3 SLZ-AF18NL 31.3 23.7 ● The air coverage is the fi gure up to the position where the air speed is 1 ft/s, when air is blown out horizontally from the unit properly at the High speed position.

  • Page 63: T3. Performance Chart

    PERFORMANCE CHART T3-1. INVERTER T3-1-1. COOLING CAPACITY SLZ-AF09NL/SUZ-AA09NL CAPACITY (Btu/h): 9,000 INPUT (kW): 0.68 SHF: 0.91 Indoor Indoor Indoor Indoor Outdoor intake air °C/°F D.B. intake air intake air intake air intake air 20/68 25/77 30/86 35/95 40/104 46/115 D.B.(°C) D.B.(°F) W.B.(°C) W.B.(°F) SHC SHF P.C.
  • Page 64 SLZ-AF15NL/SUZ-AA15NL CAPACITY (Btu/h): 15,000 INPUT (kW): 1.24 SHF: 0.72 Indoor Indoor Indoor Indoor Outdoor intake air °C/°F D.B. intake air intake air intake air intake air 20/68 25/77 30/86 35/95 40/104 46/115 D.B.(°C) D.B.(°F) W.B.(°C) W.B.(°F) SHC SHF P.C. SHC SHF P.C.
  • Page 65 T3-1-2. HEATING CAPACITY OUTDOOR:SUZ-AA09-18NL Indoor Indoor Outdoor intake air °C/°F W.B. Capacity Input Model Name intake air intake air -10/14 -5/23 0/32 5/41 10/50 15/59 Btu/h D.B.(°C) D.B.(°F) P.C. P.C. P.C. P.C. P.C. P.C. 7,737 0.60 9,422 0.72 10,270 0.77 11,975 0.86 13,690...
  • Page 66 T3-2. HYPER HEATING INVERTER T3-2-1. COOLING CAPACITY SLZ-AF09NL/SUZ-AA09NLHZ CAPACITY (Btu/h): 9,000 INPUT (kW): 0.72 SHF: 0.88 Indoor Indoor Indoor Indoor Outdoor intake air °C/°F D.B. intake air intake air intake air intake air 20/68 25/77 30/86 35/95 40/104 46/115 D.B.(°C) D.B.(°F) W.B.(°C) W.B.(°F) SHC SHF P.C.
  • Page 67 SLZ-AF15NL/SUZ-AA15NLHZ CAPACITY (Btu/h): 15,000 INPUT (kW): 1.18 SHF: 0.75 Outdoor intake air °C/°F D.B. Indoor Indoor Indoor Indoor intake air intake air intake air intake air 20/68 25/77 30/86 35/95 40/104 46/115 D.B.(°C) D.B.(°F) W.B.(°C) W.B.(°F) SHC SHF P.C. SHC SHF P.C.
  • Page 68 T3-2-2. HEATING CAPACITY OUTDOOR:SUZ-AA09-18NLHZ Outdoor intake air °C/°F W.B. Indoor Indoor Capacity Input Model Name intake air intake air -10/14 -5 / 23 0 / 32 5 / 41 10 / 50 15 / 59 Btu/h D.B.(°C) D.B.(°F) P.C. P.C. P.C.

  • Page 69: T4 Airflow Data

    AIRFLOW DATA T4-1. OUTLET AIR SPEED AND COVERAGE RANGE Unit SLZ-AF09NL SLZ-AF12NL SLZ-AF15NL SLZ-AF18NL /min 8.5 - 7.5 - 6.5 9.5 - 8.0 - 6.5 11.5 - 9.0 - 7.0 13.5 - 12.0 - 8.5 Air fl ow H-M-L 300-265-230 335-280-230 405-315-245 475-420-300...
  • Page 70 T4-2 TEMPERATURE AND AIR FLOW DISTRIBUTIONS SLZ-AF09NL Temperature distribution <Cooling mode> Standard Flow angle: 45° 4-way flow Ceiling height : 2.7m [°C(F)] [°C(F)] 30.0 30.0 29.0 29.0 28.0 28.0 27.0 27.0 26.0 26.0 23.0 23.0 23.0 23.0 24.0 24.0 24.0 24.0 25.0 25.0...

  • Page 71: Airflow Distribution

    SLZ-AF09NL Airflow distribution <Cooling mode> Standard Flow angle: 45° 4-way flow Ceiling height : 2.7m [m/s(ft/s)] [m/s(ft/s)] 2500 2000 1000 1000 2000 2500 (98.43) (78.74) (39.37) (39.37) (78.74) (98.43) Floor distance [ mm (inch) ] <Heating mode> Standard Flow angle: 60° 4-way flow Ceiling height : 2.7m [°C(F)] [°C(F)]...
  • Page 72 SLZ-AF12NL Temperature distribution <Cooling mode> Standard Flow angle: 45° 4-way flow Ceiling height : 2.7m [°C(F)] [°C(F)] 28.0 28.0 28.0 28.0 27.0 27.0 26.0 26.0 23.0 23.0 23.0 23.0 24.0 24.0 26.0 26.0 26.0 26.0 25.0 25.0 25.0 25.0 27.0 27.0 3000 2000...
  • Page 73 SLZ-AF12NL Airflow distribution <Cooling mode> Standard Flow angle: 45° 4-way flow Ceiling height : 2.7m [m/s(ft/s)] [m/s(ft/s)] 3000 2000 1000 1000 2000 3000 (118.11) (78.74) (39.37) (39.37) (78.74) (118.11) Floor distance [ mm (inch) ] <Heating mode> Standard Flow angle: 60° 4-way flow Ceiling height : 2.7m [m/s(ft/s)] [m/s(ft/s)]...
  • Page 74 SLZ-AF15NL Temperature distribution <Cooling mode> Standard Flow angle: 45° 4-way flow Ceiling height : 2.7m [°C(F)] [°C(F)] 28.0 28.0 28.0 28.0 27.0 27.0 27.0 27.0 23.0 23.0 26.0 26.0 23.0 23.0 24.0 24.0 25.0 25.0 26.0 26.0 26.0 26.0 25.0 25.0 27.0 27.0...
  • Page 75 SLZ-AF15NL Airflow distribution <Cooling mode> Standard Flow angle: 45° 4-way flow Ceiling height : 2.7m [m/s(ft/s)] [m/s(ft/s)] 3500 3000 2000 1000 1000 2000 3000 3500 (137.80) (118.11) (78.74) (39.37) (39.37) (78.74) (118.11) (137.80) Floor distance [ mm (inch) ] <Heating mode> Standard Flow angle: 60°...
  • Page 76 SLZ-AF18NL Temperature distribution <Cooling mode> Standard Flow angle: 45° 4-way flow Ceiling height : 2.7m [°C(F)] [°C(F)] 28.0 28.0 28.0 28.0 27.0 27.0 23.0 23.0 23.0 23.0 27.0 27.0 26.0 26.0 24.0 24.0 25.0 25.0 25.0 25.0 26.0 26.0 26.0 26.0 26.0 26.0...
  • Page 77 SLZ-AF18NL Airflow distribution <Cooling mode> Standard Flow angle: 45° 4-way flow Ceiling height : 2.7m [m/s(ft/s)] [m/s(ft/s)] 3500 3000 2000 1000 1000 2000 3000 3500 (137.80) (118.11) (78.74) (39.37) (39.37) (78.74) (118.11) (137.80) Floor distance [ mm (inch) ] <Heating mode> Standard Flow angle: 60°...
  • Page 78 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8,310, JAPAN Copyright 2024 MITSUBISHI ELECTRIC CORPORATION Issued: Jan. 2025 No. OCD857A Published: Sep. 2024 No. OCD857 Specifications are subject to change without notice. Made in Japan...

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