Lennox MDDD M6-1P Series Installation Manual
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Lennox MDDD M6-1P Series Installation Manual

Lennox MDDD M6-1P Series Installation Manual

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Mini-Split
Installation manual
MDDD***M6-1P
• Thank you for purchasing this Lennox Product.
• Before operating this unit, please read this manual carefully and retain it for future reference.

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Summary of Contents for Lennox MDDD M6-1P Series

  • Page 1 Mini-Split Installation manual MDDD***M6-1P • Thank you for purchasing this Lennox Product. • Before operating this unit, please read this manual carefully and retain it for future reference.

  • Page 2: Table Of Contents

    Contents Safety Information Safety Information Installation Procedure Installation Procedure Step 1 Checking and preparing accessories Step 2 Choosing the installation location Step 3 Optional: Insulating the body of the indoor unit Step 4 Installing the indoor unit Step 5 Purging inert gas from the indoor unit Step 6 Cutting and flaring the pipes Step 7 Connecting the assembly pipes to the refrigerant pipes Step 8 Performing the gas leak test...

  • Page 3: Safety Information

    • This manual explains how to install an indoor unit Flammable materials with a split system with two Lennox units. The use of other types of units with different control systems may damage the units and invalidate the warranty. The manufacturer shall not be responsible for damages arising from the use of non-compliant units.

  • Page 4: Installing The Unit

    To prevent electric shocks, fires or injuries, always stop the • Do not use the mini-split in environments with hazardous unit, disable the protection switch and contact Lennox's substances or close to equipment that releases free flames to technical support if the unit produces smoke, if the power avoid the occurrence of fires, explosions or injuries.

  • Page 5: Precautions For Using R-32 Refrigerant

    – Excessive indoor humidity or clogged condensate Make sure that the condensed water dripping from the drain lines may cause water to drip from indoor drain hose runs out properly and safely. units. Do not install the indoor unit where dripping Install the power cable and communication cable of the indoor could result in property damage, such as over and outdoor unit at least 3.3ft (1m) away from the electric...

  • Page 6: General Information On Servicing

    The actual total refrigerant charge is in accordance with • Any auxiliary device installed must be approved by the room size in accordance with Table 1. Lennox and must be suitable for operating with the • The ventilation machinery and outlets are operating refrigerant marked on the label.

  • Page 7: Charging Procedure

    • The RDS sensor must only be replaced with sensors • The refrigerant system should be earthed prior to as specified by Lennox.Sensor replacement must be charging the system. performed by a certified technician. • Label the system when charging is completed.

  • Page 8: Installation Procedure

    Installation Procedure Step 1 Checking and preparing Step 2 Choosing the installation accessories location The following accessories are supplied with the indoor Installation location requirements unit. The type and quantity may differ, depending on the specifications. • There must be no obstacles near the air inlet and outlet.
  • Page 9 7.49(3.4) 109(10.1) 95.7(8.89) 88.6(8.23) 74.7(6.94) 8.81(4.0) 128(11.9) 113(10.5) 104(9.68) 87.9(8.17) 7.93(3.6) 115(10.7) 101(9.41) 93.8(8.71) 79.1(7.35) 9.25(4.2) 134(12.5) 118(11.0) 109(10.2) 92.3(8.58) 8.37(3.8) 122(11.3) 107(9.93) 99.0(9.20) 83.5(7.76) 9.70(4.4) 141(13.1) 124(11.5) 115(10.7) 96.7(8.99) 8.81(4.0) 128(11.9) 113(10.5) 104(9.68) 87.9(8.17) 10.14(4.6) 147(13.7) 129(12.0) 120(11.1) 101(9.40) 9.25(4.2) 134(12.5) 118(11.0)

  • Page 10: Space Requirements For Installation

    Installation Procedure Do not install the mini-split in the following Space requirements for installation places. Construction Standard for Inspection Hole • Place where there is mineral oil or arsenic acid. Resin In the case the ceiling is lay-in tile, an inspection hole is not parts flame and the accessories may drop or water needed.

  • Page 11: Indoor Unit Dimensions

    Indoor unit dimensions Unit : inch(mm) hole 7x3.94=27.56(7x100=700) Ø 0.13(3.2) (Air outlet duct flange) (Air around) 32.17(817) 33.46(850) Inspection hole (Suspension position) 35.43(900) 33.46(850) 37.40(950) 19.69(500) 8.39(213) 4.92(125) Suction side Discharge side 13.39(340) Name Description Liquid pipe connection Ø1/4 inch (6.35 mm) MDDD009M6-1P / MDDD012M6-1P : Ø3/8 inch (9.52 mm) Gas pipe connection MDDD015M6-1P / MDDD018M6-1P : Ø1/2 inch (12.70 mm)

  • Page 12: Step 3 Optional: Insulating The Body Of The Indoor Unit

    Installation Procedure Step 3 Optional: Insulating the body of Step 4 Installing the indoor unit the indoor unit When deciding on the location of the mini-split with the owner, the following restrictions must be considered. 1 Place the pattern sheet on the ceiling at the spot where you Back want to install the indoor unit.

  • Page 13: Step 5 Purging Inert Gas From The Indoor Unit

    Step 5 Purging inert gas from the indoor • If this is not possible, create an opening on the false ceiling to be able to use it to perform the required unit operations on the indoor unit. From the factory, the unit is supplied and set with a pre- 4 Screw eight nuts to the suspension bolts making space for charge of nitrogen gas.

  • Page 14: Step 6 Cutting And Flaring The Pipes

    Installation Procedure • All refrigerant connections must be accessible, to permit Outer Diameter (D) Depth (A) Flare dimension (L) either unit maintenance or removing it completely. • If the pipes require brazing, ensure that OFN (Oxygen Free Ø1/4 (6.35) 0.051 (1.3) 0.34~0.36 (8.7~9.1) Nitrogen) is flowing through the system.

  • Page 15: Step 7 Connecting The Assembly Pipes To The Refrigerant Pipes

    Step 7 Connecting the assembly pipes to 3 Cut off any excess foam insulation. 4 Be sure that there are no cracks or waves on the bent area. the refrigerant pipes 5 It would be necessary to double the insulation thickness There are two refrigerant pipes of different diameters : [0.39 inch (10mm) or more] to prevent condensation even on •...

  • Page 16: Step 9 Insulating The Refrigerant Pipes

    Installation Procedure 3 Finish wrapping insulating tape around the rest of the pipes leading to the outdoor unit. Liquid refrigerant 4 The pipes and electrical cables connecting the indoor unit port with the outdoor unit must be fixed to the wall with suitable ducts.
  • Page 17 Insulation Type (Cooling, Heating) High humidity General Outer diameter [86°F(30°C), over [86°F(30°C), 85%] Pipe Remarks 85%] EPDM, NBR inch inch inch 6.35~9.52 1/4~3/8 Liquid pipe 12.7~50.80 1/2~2 6.35 The internal temperature is higher than 248°F(120°C) 9.52~25.4 3/8~1 Gas pipe 28.58~44.45 1 1/8~1 3/4 1 1/4 50.8...

  • Page 18: Step 10 Installing The Drain Hose And Drain Pipe

    Installation Procedure Step 10 Installing the drain hose and With the drain pump drain pipe 1 The drain pipe should be installed within 11.81inch(300mm) to 21.65inch(550mm) from the flexible hose and then lift 1 Push the supplied drain hose as far as possible over the drain down 0.79inch(20mm) or more.

  • Page 19: Step 11 Performing The Drainage Test

    Centralized drainage with the drain pump Step 11 Performing the drainage test Prepare a little water, about 2 liters. NOTE 1 Pour water into the base pan in the indoor unit as shown in • If a concentrated drain pipe is installed, refer to the figure the figure.

  • Page 20: Step 12 Optional: Installing The External Controller

    Installation Procedure Step 12 Optional: Installing the external 1 Fix the case at with bolts on the side of the control box in the indoor unit.(See the picture). controller 2 Attach the external controller PCB to the case in the control box of the indoor unit.

  • Page 21: Step 13 Connecting The Power And Communication Cables

    Step 13 Connecting the power and communication cables Indoor Unit F1 F2 CAUTION • Always remember to connect the refrigerant pipes before performing the electric connections. When disconnecting the system, always disconnect the electric cables before Cable clamp disconnecting the refrigerant pipes. CAUTION •...
  • Page 22 Installation Procedure AC power: M4 screw Communication: M3.5 screw 0.35(9) 0.50(12.6) CAUTION 0.30(7.5) 0.39(9.8) Unit : inch(mm) • When installing the indoor unit in a computer room or a server room, use the double shielded communication Tightening torque lbf·ft (kgf • cm) cable (tape aluminum / polyester braid + copper) of FROHH2R or LiYCY type.

  • Page 23: Step 14 Setting Additional Functions Of Wired Controller

    Step 14 Setting additional functions of wired controller Automatic Air-Volume An Automatic Air-Volume function must be performed for each indoor unit with the wired controller attached. With its BLDC motor, you can use smart adjust the indoor unit fan speed depending on the installation condition. If the duct is long so the external static pressure is high, or the duct is short so the external static pressure is low, the Automatic Air Volume will automatically adjust the supply air flow to the rate air flow rate.
  • Page 24 Installation Procedure External Static Pressure (ESP) setting for phase NOTE control motor • represents E. S. P (External Static Pressure) range of With its phase control motor, you can adjust the indoor unit factory setting. fan speed depending on the installation condition. If the You don’t have to adjust the fan speed separately if the external static pressure is high so that the duct becomes external static pressure of the installation place is in...

  • Page 25: User Mode

    NOTE 1 Press the button. (Main Menu) will be displayed, and you can press the • Easy tuning value [ ]/[ ] buttons to select User mode. – Default : 0, reflecting the status value of the indoor unit. User mode –...

  • Page 26: Step 15 Setting The Indoor Unit Option Code With The Wired Controller

    Installation Procedure Step 15 Setting the indoor unit option code with the wired controller To set the indoor unit option code use the wired controller and follow the directions below. Service mode If you want to use the various additional functions for your Wired Controller, press the buttons at the same time for more than 3 seconds.
  • Page 27 Product option Indoor unit/Ventilator option (1/5) Target Address Product option Product option (2/5) Indoor unit/Ventilator option Product option (5/5) Product option English...
  • Page 28 Installation Procedure [Product Option 1page] (1/5) Target Address 20 00 01 [Product Option 2page] [Product Option 3page] (2/5) (3/5) “0” “1” [Product Option 4page] [Product Option 5page] (4/5) (5/5) “2” “3” English...
  • Page 29 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6      Page number SEG7 SEG8 SEG9 SEG10 SEG11 SEG12      Page number SEG13 SEG14 SEG15 SEG16 SEG17 SEG18      Page number SEG19 SEG20 SEG21 SEG22...

  • Page 30: Step 16 Setting Indoor Unit Addresses And Installation Options With Wired Controller

    Installation Procedure Step 16 Setting indoor unit addresses and installation options with wired controller Set the indoor unit address and installation option with the controller option. Set each option separately since you cannot set the ADDRESS setting and indoor unit installation setting option at the same time. You need to set twice when setting the indoor unit address and installation option.
  • Page 31 [Address > Main Address] [Address > RMC Address] Target Address New address Target Address New address 20 00 01 20 00 01 Address setting range : Main (0 ~ 4F) / RMC (0 ~ FE) NOTE • Press the button anytime during setup to exit without setting. •...
  • Page 32 Installation Procedure [Installation Option 1-1page] (1/5) Target Address 20 00 01 [Installation Option 1-2page] [Installation Option 1-3page] (2/5) (3/5) “0” “1” 0 [Installation Option 1-5page] [Installation Option 1-4page] (4/5) (5/5) “2” 0 “3” 0 English...
  • Page 33 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 External room temperature sensor / RESERVED Minimizing fan operation when the Central control RESERVED thermostat is off SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 Drain pump & Emergency Controller variables for Hot Coil Auxiliary heater RESERVED Stop the auxiliary heater...

  • Page 34: Step 17 Optional : Setting The Indoor Unit Addresses And The Installation Options With The Wireless Controller

    Installation Procedure Step 17 Optional : Setting the indoor unit Press [WindFree] button and [Turbo] button for 5 seconds. addresses and the installation options Make sure that you are entered into the mode for with the wireless controller setting options: You cannot set both the indoor unit addresses and the installation options at the same time.
  • Page 35 Take the steps presented in the following table: Steps Controller display Set the SEG2 and SEG3 values: Set the SEG2 value by pressing the button repeatedly until the value you want to set appears on the controller display. SEG2 Set the SEG3 value by pressing the button repeatedly until the value you want to set appears on the controller display.
  • Page 36 Installation Procedure Steps Controller display Set the SEG6 and SEG8 values: Set the SEG6 value by pressing the button repeatedly until the value you want to set appears on the controller display. SEG6 Set the SEG8 value by pressing the button repeatedly until the value you want to set appears on the controller display.
  • Page 37 Steps Controller display Set the SEG11 and SEG12 values: Set the SEG11 value by pressing the button repeatedly until the value you want to set appears on the controller display. SEG11 Set the SEG12 value by pressing the button repeatedly until the value you want to set appears on the controller display.
  • Page 38 Installation Procedure Steps Controller display 13 Set the SEG16 and SEG17 values: Set the SEG16 value by pressing the button repeatedly until the value you want to set appears on the controller display. SEG16 Set the SEG17 value by pressing the button repeatedly until the value you want to set appears on the controller display.
  • Page 39 Steps Controller display 17 Set the SEG21 and SEG22 values: Set the SEG21 value by pressing the button repeatedly until the value you want to set appears on the controller display. SEG21 Set the SEG22 value by pressing the button repeatedly until the value you want to set appears on the controller display.
  • Page 40 Installation Procedure Check whether the option values you have set are Reset controller: button Down + correct by pressing the button repeatedly. button Down + Press for 10 seconds You can see the "SW Initialization" message. [SEG2, SEG3] [SEG4, SEG5] [SEG6, SEG8] [SEG9, SEG10] [SEG11, SEG12]...
  • Page 41 02 series installation option (Detailed) Option No. : 02XXXX-1XXXXX-2XXXXX-3XXXXX Option SEG1 SEG2 SEG3 SEG4 Use of external room temperature sensor / PAGE MODE Minimizing fan operation when thermostat is off Details Explanation Indication Details Indication Details Indication Use of external room Minimizing fan operation when thermostat temperature sensor is off...
  • Page 42 Installation Procedure Option SEG9 SEG10 SEG11 SEG12 Use of Hot Coil Use of auxiliary heater Controller variables for auxiliary heater Details Details Explanation Heater operation Time delay for Indication Details Indication Indication External operation Emergency operation temperature when the auxiliary heat Heater when heater...
  • Page 43 Option SEG17 SEG18 SEG19 SEG20 Buzzer control / Refrigerant detection Maximum filter usage time ³ PAGE Individual control with controller ⁴ sensor Explanation Indication Details Indication Details Indication Details Indication Details Buzzer Refrigerant detection sensor Disuse 1000 Hour 0 or 1 Indoor 1 Disuse Disuse...
  • Page 44 Installation Procedure 05 series installation option (Detailed) Option No. : 05XXXX-1XXXXX-2XXXXX-3XXXXX SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Page Mode Indication Details Indication Details Reserved Reserved Reserved Reserved Installation Option 2 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 Bit 0 : Allow Fan control in auto mode Page Heater lock out Heat pump lock out...
  • Page 45 Changing the addresses and options individually When you want to change the value of a specific option, refer to the following table and follow the steps in Common steps for setting the addresses and options on page 34. Option SEG1 SEG2 SEG3 SEG4...
  • Page 46 Installation Procedure For controlling AC LAMP (On/Off) R-32 check : CN833 (Yellow,2 Pin) AC LAMP AC POWER SUPPLY 208~240VAC (50/60Hz) ※ Use of the WIRE HARNESS included in VSTAT10P-1 → → To Main PBA VSTAT10P-1 For controlling EXTERNAL ALARM or VENTILATION SYSTEM (On/Off) R-32 check : CN833 (Yellow,2 Pin) External Alarm or...

  • Page 47: Step 18 Optional : Led Display Indicator Specifications When Checking Wi-Fi Easy Setup And Wi-Fi Status

    Step 18 Optional : LED Display indicator specifications when checking Wi-Fi Easy Setup and Wi-Fi status The wireless controller can be used for Easy Setup, checking the internet connection status and connecting or disconnecting Wi-Fi. Easy Setup Check internet connection status Connect/Disconnect to Wi-Fi Mode Press the...

  • Page 48: Led Indicator Status

    Installation Procedure LED indicator Status Indicators Filter On / Off Timer Duct Note Action sign AP Entry All LEDs turn On Device Check All LEDs Flashing LEDs Flashing sequentially Device (On/Off → Timer → Fan → Filter Registration sign) Easy Setup Connection All LEDs Flashing(During 3SEC) success...

  • Page 49: Step 19 Wi-Fi Module Reinstallation Guide

    Step 19 Wi-Fi module Reinstallation guide 2 Disconnect the Wi-Fi connector. In some cases, the Wi-Fi module may need to be removed and relocated to improve the Wi-Fi signal connection. 1 Disassemble two screws and remove the control cover. 3 Disassemble two screws and remove the pipe cover. English...
  • Page 50 Installation Procedure 4 Pull out the Wi-Fi wire through the wire hole, and then take 6 Reinstall the pipe cover and control cover. out the Wi-Fi module from the back side of the pipe cover. 5 Connect the Wi-Fi wire connector through the wire hole . 7 Fix the Wi-Fi module to the Ceiling to avoid the steel structure.

  • Page 51: Appendix

    Troubleshooting • If an error occurs during the operation, one or more LEDs flicker and the operation is stopped except the LED. • If you re-operate the mini-split, it operates normally at first, then detects an error again. Indicators Error Abnormal conditions Remarks code...
  • Page 52 Troubleshooting • If an error occurs, is displayed on the wired controller. If you would like to see an error code, press the Test button. Display Explanation Remark Communication Error between indoor and outdoor unit Indoor fan PCB overheating error Error of Room sensor in the indoor unit (Open/Short) Error of Eva In sensor in the indoor unit (Open/Short) Error of Eva Out sensor in the indoor unit (Open/Short)

This manual is also suitable for:

Mddd009m6-1pMddd012m6-1pMddd015m6-1pMddd018m6-1p

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