Samsung MCU-S2NEK1N - Installation Manual

5 Accessories Please check if items below are included in installation accessories. Name Insulation (for pipe) Insulation (for base) Installation manual Pattern sheet Cable tie Pipe socket Drain socket Shape Name Y-connector [Ø9.52mm(3/8") ,Ø15.88mm(5/8") (Except MCU-S2NEK1N)] Shape Selectin...

6 Preparing the installation MCU indoor/outdoor unit compatible table Before installing MCU, refer to the compatible table below and find the model before installation. Outer diameter AM ✴✴✴✴ X ✴✴✴✴ MCU MCU-S6NEE1NMCU-S4NEE1NMCU-S4NEE2NMCU-S2NEK1N MCU AM ✴✴✴✴ N ✴✴✴✴ MCU Kit Model Description MCU-S6N...

7 1. Since refrigerant noise can be generated during the MCU operation, do not install the unit on the ceiling of the places that requires silence such as bedrooms, libraries, hospitals and offices etc. 2. Do not install the MCU in the ceiling of the living area. Otherwise, noise generated from the ...

10 Installing the unit 4) Cautions about MCU installation. X When fixing the unit at the upper place using suspension bolts, use a nut and washer to vertically fasten the unit. X There are four spots to fix the suspension bolts. Make sure every spot is fixed. X The upper and the lower side of MCU is...

11 Method and cautions on brazing the pipe Keeping refrigerant pipe clean and dry X To prevent foreign materials or water from entering the pipe, it is important to keep the refrigerant pipe clean, dry and sealed during installation. Exposure place Exposure time Sealing type Outside exposure Longer ...

13 Draining form X In a standard condition, drain installation is not required X In a high humidity condition, drain installation is required High humidity condition: Indoor temperature of 30°C, relative humidity of 85% within MCU installation space Without the drain pump 1. Install horizontal drain...

15 Installing the wire X Supply the 220-240V/208-230V power to L1, L2 of MCU separately with outdoor unit. X Connect the communication cable from the outdoor unit to F1, F2 of MCU. X Power Line and communication line must be connected as shown in drawing. Case 1 Case 2 Indoor Unit Indoor Unit 220-24...

16 Wiring works X Choose the compressed socket based on the cross-section of the connecting wire. Silver solder Nominal dimensions for cable [mm2 (inch2)] 1.5 (0.002) 2.5 (0.003) 4 (0.006) Nominal dimensions for screw [mm (inch)] 4 (0.157) 4 (0.157) 4 (0.157) 4 (0.157) 4 (0.157) B Standard dimension...

17 Setting MCU address X Set the rotary switch of the indoor unit ADDRESS on the MCU PCB same as the ADDRESS of connected indoor unit. X When installing more than 2 MCU, set each rotary switch for MCU ADDRESS properly. 0123 4 5 6 7 8 9A BC D E F Outdoor Unit PCB MCU PCB MCU PCB Setting the number of...

18 Wiring works Setting MCU option DIP switch for indoor unit setting (ON:Use, OFF:Not use) Rotary switch for MCU ADDRESS Rotary switch for Indoor unit ADDRESS X Address on the rotary switch at the MCU PCB and the rotary switch on the indoor unit must be same. X When installing more than 2 MCU’s set...

20 Wiring works K4 Switch (Electronic Valve Manual Control) X According to the push time of K4 Switch, A_C, A_H, …, F_C, F_H, Liquid bypass solenoid valve opens in order. X In Electronic Valve Manual Control mode, valve operates by K4 Push time irrespective of indoor operation mode. X In Electronic ...

21 J After installing MCU, check those items below. If you find something unfulfilled, refer to the manual to complete it. Item Check 1. If the gas leaking test has been completed or not. 2. If MCU has been fixed securely enough to avoid the danger of vibration and falling or not. 3. The Insulation ...

22 (unit : A) Capacity (kBtu) Model 6 7.5 9 9.5 12 15 18 20 24 27 30 36 48 54 60 72 76.8 96 1way cassette (AM 777 FN1DC 7 ) 0.23 0.25 0.28 4way cassette S(600x600) (AM 777 FNNDC 7 ) 0.17 0.19 0.27 0.3 4way cassette S(AM 777 FN4DC 7 ) 0.25 0.25 0.25 0.3 0.5 0.56 0.75 Floor Standing Unit (AM 777 JNFD ...