Samsung LENNOX VOWC S4-4P Series Installation Manual
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Samsung LENNOX VOWC S4-4P Series Installation Manual

Samsung LENNOX VOWC S4-4P Series Installation Manual

Vrf (variable refrigerant flow)
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VRF (Variable Refrigerant Flow)
Installation manual
VOWC***S4-4P
• Thank you for purchasing this Lennox Product.
• Before operating this unit, please read this manual carefully and retain it for future reference.
DB68-13131A-00_IM_VRF 1way_AA_EN_.indd 1
DB68-13131A-00_IM_VRF 1way_AA_EN_.indd 1
2024-08-07 오전 9:31:16
2024-08-07 오전 9:31:16

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  • Page 1 VRF (Variable Refrigerant Flow) Installation manual VOWC***S4-4P • Thank you for purchasing this Lennox Product. • Before operating this unit, please read this manual carefully and retain it for future reference. DB68-13131A-00_IM_VRF 1way_AA_EN_.indd 1 DB68-13131A-00_IM_VRF 1way_AA_EN_.indd 1 2024-08-07 오전 9:31:16 2024-08-07 오전...
  • Page 2 Contents Safety Information 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

    Safety Information • The manufacturer shall not be responsible for damage California Proposition 65 Warning (US) originating from unauthorized changes or the WARNING improper connection of electric and requirements set forth in the “Operating limits” table, included in the • Cancer and Reproductive Harm - www.P65Warnings.ca.gov. manual, shall immediately invalidate the warranty.

  • Page 4: Installing The Unit

    Safety Information • This unit is a partial unit 1-Way Cassette, complying • If any gas or impurities, except R-410A refrigerant, with partial unit requirements of this International come into the refrigerant pipe, serious problem may Standard, and must only be connected to other occur and it may cause injury.
  • Page 5 CAUTION Make sure that you earth the cables. • Do not connect the earth wire to the gas pipe, water pipe, lighting rod or telephone wire. If earthing is not complete, electric shock or fire may occur. Install the circuit breaker. •...

  • Page 6: Step 1 Checking And Preparing Accessories

    Installation Procedure Installation Procedure Step 1 Checking and preparing Step 2 Choosing the installation location accessories Installation location requirements The following accessories are supplied with the indoor unit. The type and quantity may differ, depending on the • There must be no obstacles near the air inlet and specifications.

  • Page 7: Indoor Unit Dimensions

    Indoor unit dimensions 1-Way Cassette (Small) Unit: inch(mm) 33.86(860) (Ceiling opening dimension) 31.18(792) Space of suspension bolts) 16.93(430) Ceiling 37.8(960) Outlet 2.64(67) VOWC005S4-4P Model VOWC007S4-4P inch(mm) 5.28(134) inch(mm) 7.09(180) Liquid pipe connection inch(mm) Ø1/4"(6.35) Gas pipe connection inch(mm) Ø1/2"(12.7) Drain hose connection inch(mm) 3/4 inch [OD 1.05 inch (26.67 mm)] CAUTION...
  • Page 8 Installation Procedure 1-Way Cassette (Medium) Unit: inch(mm) 45.28(1150) (Ceiling opening dimension) 40.79(1036) (Space of suspension bolts) 38.19(970) 16.14(410) Ceiling 47.17(1198) 1.97(50) VOWC009S4-4P Model VOWC012S4-4P inch(mm) 5.12(130) inch(mm) 7.05(179) Liquid pipe connection inch(mm) Ø1/4"(6.35) Gas pipe connection inch(mm) Ø1/2"(12.7) Drain hose connection inch(mm) 3/4 inch [OD 1.05 inch (26.67 mm)] English...
  • Page 9 1-Way Cassette (Large) Unit: inch(mm) 54.33(1380) (Ceiling opening dimension) 49.6(1260) (Space of suspension bolts) 47.24(1200) 17.72(450) Ceiling 55.51(1410) 1.97(50) Model VOWC015/018S4-4P VOWC024S4-4P inch(mm) 5.24(133) inch(mm) 7.09(180) Liquid pipe connection inch(mm) Ø1/4"(6.35) Ø3/8"(9.52) Gas pipe connection inch(mm) Ø1/2"(12.7) Ø5/8"(15.88) Drain hose connection inch(mm) 3/4 inch [OD 1.05 inch (26.67 mm)] English...

  • Page 10: Spacing Requirements

    Installation Procedure Step 3 Optional: Insulating the body of Spacing requirements the indoor unit Unit: inch(mm) Cut openings in the insulation for unit refrigerant and drain pipes. 5.91(150) or more 59.06(1500) or more Insulate the end of the pipe and some curved area by using separate insulator.
  • Page 11 3 Install the suspension bolts, depending on the ceiling 6 Check the level of the indoor unit by using a Level. type. • A tilt of the indoor unit may cause malfunction of a built-in float switch and water leaks. Ceiling support Level 7 Adjust the unit to the appropriate position, taking into...

  • Page 12: Step 5 Purging Inert Gas From The Indoor Unit

    Installation Procedure When the installation template is made of plastic Pipe cutter Unit : inch(mm) 1-Way Cassette, small type ③ Small type (outlet) ④ Small type (inlet) Indoor unit 0.24(6) 0.32(8.03) Oblique Rough Burr Pipe Clamping jig 3 To prevent any gas from leaking out, remove all burrs 1-Way Cassette, medium/large type at the cut edge of the pipe, using a reamer.

  • Page 13: Step 7 Connecting The Assembly Pipes To The Refrigerant Pipes

    Step 7 Connecting the assembly pipes NOTE to the refrigerant pipes • If the pipes must be shortened, see Step 6 Cutting and flaring the pipes on page 12. There are two refrigerant pipes of different diameters : • A smaller one for the liquid refrigerant. 2 Be sure to use an insulator thick enough to cover the refrigerant pipes to improve the efficiency of the unit •...

  • Page 14: Step 8 Performing The Gas Leak Test

    Installation Procedure Step 8 Performing the gas leak test To identify potential gas leaks on the indoor unit, inspect the connection area of each refrigerant pipe using a leak detector for R-410A. Before creating a vacuum and adding refrigerant, pressurize the whole system with nitrogen using a cylinder with a pressure reducer at a pressure above 4.1MPa (594.7 PSI) in order to detect leaks on the refrigerant fittings.

  • Page 15: Charging Additional Refrigerant

    Insulation cover pipe <Geological condition> Insulation pipe High humidity locations such as shorelines, hot springs, lake or riversides, and ridges (when part of the building is Indoor unit covered by earth and sand) <Operation purpose condition> Restaurant ceiling, sauna, swimming pool etc. Be sure to overlap the insulation.

  • Page 16: Step 10 Installing The Drain Hose And Drain Pipe

    Installation Procedure Step 10 Installing the drain hose and CAUTION drain pipe Check that the indoor unit is level with the ceiling by using by using a level. 1 Connect the flexible hose to the drain hose port. • If the slope of the drain pipe is less than 1/100, be sure •...

  • Page 17: Step 11 Performing The Drainage Test

    • Do not apply force to the piping on the unit side when NOTE connecting the drain hose. The hose should not be • If a concentrated drain pipe is installed, refer to the allowed to hang loose from its connection to the unit. figure below.

  • Page 18: Bushing Bracket Installation

    Installation Procedure b After pouring some water, reassemble the rubber • Reassemble the control box cover. cap on the connection part of a flexible hose of c Check whether the drain pump works correctly. the indoor unit and firmly tighten it with a band to d Check whether the drainage is performing prevent leakage.

  • Page 19: Step 12 Connecting The Power And Communication Cables

    Step 12 Connecting the power and • To protect the product from water and possible shock, you should keep the power and the communication communication cables cables of the indoor and outdoor units in the iron pipe. • Connect the power cable to the auxiliary circuit breaker (ELCB, MCCB, ELB).
  • Page 20 Installation Procedure Selecting the crimping terminal lug 1 Select the crimping terminal lug based on the norminal dimension of the power cable. 2 Cover the connection part of the power cable and crimping terminal lug to insulate it. Silver solder Norminal dimensions for cable [inch 0.0023 (1.5) 0.0039 (2.5)
  • Page 21 1 Decide the capacity of ELB and MCCB by below 2 Decide the power cable specification and maximum formula. length within 10% voltage drop among indoor units. The capacity of ELB, MCCB X[A] = 1.25 X 1.1 X ΣAi Coef×35.6×Lk ∑...
  • Page 22 Installation Procedure • Maximum length of power cables are decided within CAUTION 10% of power drop. If it exceeds, you must consider • Select the power cable in accordance with relevant another power supplying method. local and national codes. • If multiple indoor units are connected to a single •...
  • Page 23 Step 13 Setting the indoor unit d Make sure that you are entered to the mode for setting options. addresses and the installation options You cannot set both indoor unit addresses and the installation options in a batch: set both respectively. 2 Digit Common steps for setting the addresses point (2SEG per point)
  • Page 24 Installation Procedure Take the steps presented in the following table: Steps Remote control display 1 Set the SEG2 and SEG3 values: a Set the SEG2 value by pressing the button repeatedly until the value you want to set appears on the remote control display. SEG2 b Set the SEG3 value by pressing the button repeatedly until the value you...
  • Page 25 Steps Remote control display 6 Press the button to move to next page. 7 Set the SEG9 and SEG10 values: a Set the SEG9 value by pressing the button repeatedly until the value you want to set appears on the remote control display. SEG9 b Set the SEG10 value by pressing the button repeatedly until the value you...
  • Page 26 Installation Procedure Steps Remote control display 11 Set the SEG14 and SEG15 values: a Set the SEG14 value by pressing the button repeatedly until the value you want to set appears on the remote control display. SEG14 b Set the SEG15 value by pressing the button repeatedly until the value you want to set appears on the remote control display.
  • Page 27 Steps Remote control display 16 Press the button to move to next page. 17 Set the SEG21 and SEG22 values: a Set the SEG21 value by pressing the button repeatedly until the value you want to set appears on the remote control display. SEG21 b Set the SEG22 value by pressing the button repeatedly until the value you...
  • Page 28 Installation Procedure 3 Check whether the option values you have set are b Reset remote control: 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]...
  • Page 29 Setting the indoor unit addresses (MAIN/MSB) 3 Set an address (MAIN/MSB port) for each indoor unit using the remote control, according to your air 1 Make sure that the power is supplied to the indoor conditioning system plan. unit. • The indoor unit addresses (MAIN/MSB port) are set •...
  • Page 30 Installation Procedure Option SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 Setting MSB PORT 10-digit of MSB Function Page 1-digit of MSB MSB PORT address address address Indication Details Indication Details Indication Details Indication Details Indication Details No MSB PORT Indication PORT MSB PORT 10-digit 1-digit...
  • Page 31 Installation options for the 02 series SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Use of external room temperature Use of central FAN RPM Evaporator Drying sensor / Minimizing control compensation fan operation when thermostat is off SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 Dew removal EEV Step when...
  • Page 32 Installation Procedure 02 series installation option (Detailed) Option No. : 02XXXX-1XXXXX-2XXXXX-3XXXXX Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Use of external room temperature sensor / Use of central Explanation PAGE MODE Evaporator Drying FAN RPM compensation Minimizing fan operation when control thermostat is off Details...
  • Page 33 Option SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 Setting the output of external control / External Explanation PAGE Use of external control heater signal / Cooling Buzzer control Hours of filter usage operation signal / Free Cooling control signal Indication Details Indication Details Indication Details...
  • Page 34 Installation Procedure * Advanced function: Controlling cooling/heating current or power saving with motion detect. (*1) When Cooling or Dry mode turns off, the indoor fan will operate for the specified amount of time. (*2) Minimizing fan operation when thermostat is off - Fan operates for 20 seconds at an interval of 5 minutes in heat mode.
  • Page 35 05 series installation option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Use of Auto Change (When setting SEG3) Over for HR only in (When setting SEG3) (When setting SEG3) Standard for mode Auto mode / Use of Standard heating Standard cooling change Heating →...
  • Page 36 Installation Procedure 05 series installation option (Detailed) Option No. : 05XXXX-1XXXXX-2XXXXX-3XXXXX Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Use of Auto Change Over (When setting SEG3) (When setting SEG3) (When setting SEG3) for HR only in Auto mode / Explanation PAGE MODE Standard heating temp.
  • Page 37 Option SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 Explanation PAGE Control variables when using hot water / external heater (*5) Details Indication Details Indication Set temp. for heater On/Off Delay time for heater On At the same time as thermo on No delay At the same time as thermo on 10 minutes...
  • Page 38 Installation Procedure (* 1) Duration for Auto Change Over triggered when you set dual set points in the Auto mode using the wired remote control VSTAT04P-1. During the automatic heating operation, if the specified time has elapsed in the state of "the room temperature > the cooling temperature in the Auto mode + the primary cooling temperature (set in the Auto Change Over screen after entering the User mode by pressing the button on the wired remote control)"...
  • Page 39 Additional information on SEG 3, 4, 5, 6, 8, 9 When SEG 3 is set to 1 and the HR-specific auto changeover function is run, the indoor unit operates as shown in the following figure: A: Set with SEG4°F(°C) Temperature Reference temperature for change from heating to cooling B: Set with SEG5°F(°C)

  • Page 40: Changing The Addresses And Options Individually

    Installation Procedure 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 23. Option SEG1 SEG2...
  • Page 41 After finishing the installation of the 1-Way Cassette, you should explain the following to the user. Refer to appropriate pages in the User’s Manual. 1 How to start and stop the 1-Way Cassette 2 How to select the modes and functions 3 How to adjust the temperature and fan speed 4 How to adjust the airflow direction 5 How to set the timers...
  • Page 42 Installation Procedure Setting up the ETO Error output port (1, 2) Main indoor unit Communication between External contact indoor and outdoor units interface module (F1 and F2) MIM-B14 Contact input port (5, 6) Sub indoor unit Main indoor unit 1 Disable the external contact control (Default). 2 Connect Lennox Service Software to F1 and F2.
  • Page 43 Sub indoor unit (backup Unit) 1 (Required) Enable the external contact control (with the installation option 02 series SEG14 - Reverse Control). 2 Connect the Lennox Service Software to F1 and F2. 3 Enable the entrance control and set the mode, set temperature, and fan speed in the Lennox Service Software. •...

  • Page 44: Troubleshooting

    Appendix Troubleshooting Detection of errors • If an error occurs during the operation, an LED flickers and the operation is stopped except the LED. • If you re-operate the 1-Way Cassette, it operates normally at first, then detect an error again. LED Display on the receiver &...
  • Page 45 Indoor unit display indications Error Abnormal condition code Yellow Blue Green 1. COND mid sensor is detached E241 2. Refrigerant leakage (2nd detection) E554 3. Abnomally high temperature on Cond (2nd detection) E450 4. Low pressure s/w (2nd detection) E451 5.
  • Page 46 DB68-13131A-00_IM_VRF 1way_AA_EN_.indd 46 DB68-13131A-00_IM_VRF 1way_AA_EN_.indd 46 2024-08-07 오전 9:31:27 2024-08-07 오전 9:31:27...

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