Samsung MCU-Y6NEE Installation Manual

12Outdoor unit connection pipe size : (A1), (A2), (A3) Branch joint : (D), (E), (F)A1 : Select the pipes according to the outdoor unitcapacity with following table.A2 : Select the pipes according to sum of outdoorunit capacities behind the outdoor joint withfollowing table.A3 : Select the main pipe of outdoor units with thefollowing table.*A1 : Pipes to the outdoor unit (Liquid, Gas, High pressure gas)*A2 : Pipes between outdoor joint kits(Liquid, Gas, High pressure gas)*A3 : Main pipes (Liquid, Gas, High pressure gas)Pipe size between branch joints : (B)Select the pipe size according to the capacity sum ofindoor units which are connected below this pipe.Pipe size between branch joints and indoorunit : (C)Select the pipe size according to the indoorunit’s capacity.Selecting the refrigerant pipeWhen selecting the refrigerant pipe, refer to the table below. (The amount of additional MCU refrigerant : 0.5 Kg)Refrigerant piping works12HP 14HPOutdoorunitPipe size (O.D. mm), (A) Oilbalancingpipe sizeLiquid Gas High gas8HP Ø9.52 Ø19.05 Ø15.88Ø6.3510HP Ø22.23 Ø19.0512HP Ø12.70 Ø25.40 Ø22.2314HP16HPØ28.5818HPØ15.88 Ø25.4020HP22HP24HP26~30HP Ø19.05 Ø31.75 Ø28.5832~34HP36~48HP Ø38.10 Ø31.7550~60HP Ø22.23 Ø44.45 Ø38.10■ Branch joint of outdoor unit’s multiconnection (D)Model Capacity ofoutdoorLiquid & Lowgas pipeMXJ-T3819✴ Below 48 HPMXJ-T4422✴ Above 50 HPHigh gas pipe MXJ-T3100✴ Below 48 HPMXJ-T3800✴ Above 50 HPIndoor unit’s capacity Pipe size (O. D. mm)Liquid pipe Gas pipe2.2~5.6 kW Ø6.35 Ø12.707.1~14.0 kW Ø9.52 Ø15.8816HPTotal indoor unit’scapacityPipe size (O.D. mm)Liquid Gas High gas15.0 kW and below Ø9.52 Ø15.88 Ø15.88Over 15.0~23.2 kW and below Ø19.05Over 23.2~29.0 kW and below Ø22.23 Ø19.05Over 29.0~40.6 kW and below Ø12.70 Ø25.40 Ø22.23Over 40.6~46.4 kW and below Ø28.58Over 46.4~69.6 kW and below Ø15.88 Ø25.40Over 69.6~98.6 kW and below Ø19.05 Ø31.75 Ø28.58Over 98.6~139.2 kW and below Ø38.10 Ø31.75Over 139.2 kW Ø22.23 Ø44.45 Ø38.10■ First branch joint (E)Select branch joint according to outdoorunit’s capacity.Liquid& LowpressuregasY-joint (E)Outdoor unit Model8 ~ 14 HP MXJ-YA2512✴16 HP MXJ-YA2812✴18 ~ 24HP MXJ-YA2815✴26 ~ 34HP MXJ-YA3119✴36 ~ 48HP MXJ-YA3819✴50 ~ 60HP MXJ-YA4422✴HighpressuregasY-joint (E)Outdoor unit Model8 HP MXJ-YA1500✴10 ~ 24 HP MXJ-YA2500✴26 ~ 48 HP MXJ-YA3100✴50 ~ 60HP MXJ-YA3800✴■ Branch joint (F)Liquid& lowpressuregasY-joint(F)Model Total indoor unit’s capacityMXJ-YA1509✴ 15.0 kW and belowMXJ-YA2512✴ Over 15.0~40.6 kW and belowMXJ-YA2812✴ Over 40.6~46.4 kW and belowMXJ-YA2815✴ Over 46.4~69.6 kW and belowMXJ-YA3119✴ Over 69.6~98.6 kW and belowMXJ-YA3819✴ Over 98.6~139.2 kW and belowMXJ-YA4422✴ Over 139.2 kWHighpressuregasY-joint(F)Model Total indoor unit’s capacityMXJ-YA1500✴ 23.2 kW and belowMXJ-YA2500✴ Over 23.2 ~ 69.6 kW and belowMXJ-YA3100✴ Over 69.6 ~ 139.2 kW and belowMXJ-YA3800✴ Over 139.2 kW(C)(F)(D)(A3)(A2)(A1)• Example) 42HP of compactcombinationsHP Mark Pipe size (O. D.mm)Liquid Low gas High gas12 (A1) Ø12.70 Ø25.40 Ø22.2314 (A1) Ø12.70 Ø25.40 Ø22.2316 (A1) Ø12.70 Ø28.58 Ø22.2326 (A2) Ø19.05 Ø31.75 Ø28.5842 (A3) Ø19.05 Ø38.10 Ø31.75(A1)(A1) (E)(B)• The sum of the total capacity of the indoor units connected to a MCU should not be over the max. 44.8kW.