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Samsung KXWD Series Installation Manual

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Air Conditioner

installation manual

EN ES FR PT
DB68-04799A-03
imagine
the possibilities
Thank you for purchasing this Samsung product.
DVM S WATER-GEO
AM✴✴✴KXWD Series
AM✴✴✴HXWA Series

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Summary of Contents for Samsung KXWD Series

  • Page 1: Air Conditioner

    DVM S WATER-GEO AM✴✴✴KXWD Series AM✴✴✴HXWA Series Air Conditioner installation manual imagine the possibilities Thank you for purchasing this Samsung product. EN ES FR PT DB68-04799A-03...

  • Page 2: Table Of Contents

    Contents Before Installation Safety precautions ..................... . . 3 Preparing for installation .

  • Page 3: Safety Precautions

    ❋ Generally, system air conditioners should not be relocated after installation. But when it has to be relocated for inevitable reasons, please contact Samsung’s qualified dealers for system air conditioners. Product is irrelevant to any installation or performance problem of the cooling tower and water pipes.
  • Page 4 Safety precautions Neatly arrange the wires in the electrical parts to make sure that electrical cover is closed securely without any gaps. If the cover is not properly closed, heat may be generate on the electrical terminal and cause electric shock or fire. Make sure to use the provided or specified parts with the specified tools for installation.
  • Page 5 CAUTION SIGNS Perform the drainage/piping work securely according to the installation manual. If not, water could drop from the unit and household goods could get wet and damaged. Fasten a flare nut with a torque wrench as specified in this installation manual. When fastened too tight, a flare nut may break after a long period of time and cause refrigerant leakage.

  • Page 6: Preparing For Installation

    Preparing for installation Outdoor unit classification Classification Small chassis Medium chassis Large chassis Appearance Models AM038/048/055KXWD✴ AM072/096/120HXWA✴✴ AM192HXWA✴✴ Packaging material disposition Safely store or dispose the packaging materials. CAUTION - Sharp metals such as nails or wooden material packaging that may break into pieces become a cause for personal injury.

  • Page 7: Outdoor Unit Combination

    Outdoor unit combination Make sure to use an indoor unit that is compatible with DVM S WATER-GEO. Indoor units can be connected within the range indicated in following table. If the total capacity of the connected indoor units exceeds the indicated maximum capacity, cooling and heating capacity of the indoor unit may decrease.
  • Page 8 Preparing for installation Used for both heat pump and heat recovery systems (3 phase) Model name for combination 14 ton 16 ton 18 ton 20 ton AM168HXWA✴✴ AM192HXWA✴✴ AM216HXWA✴✴ AM240HXWA✴✴ Number of individual outdoor units AM072HXWA✴✴ AM096HXWA✴✴ Combined outdoor unit AM120HXWA✴✴...
  • Page 9 Used for both heat pump and heat recovery systems (3 phase) Model name for combination 30 ton 32 ton 34 ton 36 ton AM360HXWA✴✴ AM384HXWA✴✴ AM408HXWA✴✴ AM432HXWA✴✴ Number of individual outdoor units AM072HXWA✴✴ AM096HXWA✴✴ Combined outdoor unit AM120HXWA✴✴ AM192HXWA✴✴ Cooling (Btu/h) 360000 384000 408000...

  • Page 10: Moving The Outdoor Unit

    Preparing for installation Moving the outdoor unit Select the moving path in advance. Be sure that moving path can support weight of the outdoor unit. Do not slant the product more than 30˚ when carrying it. (Do not lay the product down in sideways.) Surface of the heat exchanger is sharp.

  • Page 11: Selecting Installation Location

    Selecting installation location Decide the installation location regarding the following condition and obtain user’s approval. Standard installation condition Heat source water containing foreign substances can cause condenser and pipe corrosion as well as water scale. Therefore, make sure that water source meets the standard of cooling water quality for refrigerating and air conditioning equipment.

  • Page 12: Space Requirement For Installation

    Space requirement for installation Minimum space requirement for installation Secure minimum installation space as shown in the following figures, considering service area and path for people etc. - If the installation space is narrow, installer or other worker may get injured during work and may also cause problem to the product.
  • Page 13 When the water pipe passes through back of the product Unit: mm (inch) Outdoor unit Space for installing water pipe Service space Front side Over 350 (14) Over 300 Over 300 Anti-vibration pad (12) (12) <Top view> <Front view> ENGLISH-13...
  • Page 14 Space requirement for installation Module or continuous installation Unit: mm (inch) Outdoor unit Outdoor unit Service space Service space Front side Front side Over 350 (14) Over 350 (14) Over E Over E Over 20 (1) <Top view> ENGLISH-14...
  • Page 15 Double installation Unit: mm (inch) H beam support Over E Service space <Front view> For the double installation, service space is required for the front, rear, and sides of the product. For the size of the service space, refer to the service space size of single, module or continuous installation. Clear enough space for E (space between outdoor units), so that water pipes connected to outdoor units does not block the front side of the outdoor units next to it.

  • Page 16: Accessories

    Accessories Accessories You must keep following accessories until the installation is finished. Hand over the installation manual to the customer after finishing the installation. Installation manual *Installation socket ❋ Models with packing socket: AM072/096/120HXWA ✴✴ ❋ Socket can be different depending on the models. Heat recovery [mm (inch)] Heat pump [mm (inch)] Model number...

  • Page 17: Optional Accessories

    Optional accessories Following optional accessories are needed for connecting pipes between the indoor and outdoor units. Specification Classification Model Name MXJ-YA1509M 51 and below 15.0 and below MXJ-YA2512M Over 51~136 and below Over 15.0 ~40.0 and below MXJ-YA2812M Over 136~154 and below Over 40.0 ~45.0 and below Y-Joint MXJ-YA2815M...

  • Page 18: Base Construction And Installation Of The Outdoor Unit

    Base construction and installation of the outdoor unit Make sure to remove the wooden pallet before installing the outdoor unit. If you do not remove the wooden pallet, there is risk of fire during welding the pipes. If the outdoor unit is installed with wooden pallet on, and WARNING it was used for long period time, wooden palette may break and cause electrical hazard or high pressure may damage the pipes.

  • Page 19: Outdoor Unit Installation

    Base ground construction Draining pit Over 150 mm (5.9 inch) <When installing on the ground> Outdoor unit installation Unit: mm (inch) H beam or anti- Outdoor unit vibration frame Anchor bolt Base ground 20 (0.79) Anti-vibration pad Nut, Spring washer H beam or anti-vibration frame Over A + 10~20 (0.39~0.79) Fixing the outdoor unit Hole on outdoor unit for fixing anchor bolt [4 x 12 mm (1/2’)]...

  • Page 20: Drain Pipe Installation

    Drain pipe installation Installing the drain pipe Attach the drain pipe to the drain socket (PT1/2) located on the bottom of the product. Drain socket (PT 1/2) Single installation Outdoor unit Open to air Drain socket Slope over 1/50 Module installation Outdoor unit Outdoor unit Open to air...
  • Page 21 Cautions regarding connecting the anchor bolt Use the rubber washer to prevent the anchor bolt from corroding. CAUTION Rubber washer Anchor bolt specifications Drill bit Anchor Sleeve length Insertion Fastening Size (m) diameter (a) length (b) depth torque Ø 10 14 mm (1/2”) 75 mm (3”) 40 mm (11/2”)

  • Page 22: Refrigerant Pipe Installation

    Refrigerant pipe installation When installing, make sure there is no leakage. When collecting the refrigerant, stop the compressor first before removing the connection pipe. If the refrigerant pipe is not properly connected and the compressor is working WARNING with the service valve open, the pipe sucks the air in which makes the pressure inside of the refrigerant cycle abnormally high which may lead to explosion and injury.
  • Page 23 Selecting refrigerant pipe Y-joint Increase the main pipe size Install the refrigerant pipe according to main pipe size of each outdoor unit capacity. When the pipe length (including elbow) between the outdoor unit and the farthest indoor unit exceeds 90 m (295.28 ft), the size of the pipe (main pipe) connecting the outdoor unit to the first branch joint must be increased by 1 grade.
  • Page 24 Refrigerant pipe installation Choosing refrigerant pipe H/P (AM038/048/055KXWD✴) First Y-joint Size up for main pipe Pipe installation between an outdoor unit and the first Y-joint Outdoor unit capacity [HP(Ton)] Liquid pipe [mm (inch)] Gas pipe [mm (inch)] 4 (3) Ø9.52 (3/8) Ø15.88 (5/8) 5 (4) Ø9.52 (3/8)
  • Page 25 Selecting Y-joint Select the first Y-joint according to main pipe size of each outdoor unit capacity. Select the other Y-joints according to the total indoor unit capacity under the selected Y-joint. Selecting the first Y-joint Outdoor unit capacity [HP(Ton)] Y-joint model 4 (3) MXJ-YA1509✴...
  • Page 26 Refrigerant pipe installation 2. Amount of additional refrigerant for each indoor unit (ⓑ) [Unit : kg(lb)] Capacity (kBtu) 9.5 12 15 18 20 23.2 24 27 28 30 36 42 48 54 60 72 76.8 96 Model 0.25 0.25 0.25 1way cassette (AM✴✴✴FN1DC✴) (0.55) (0.55)
  • Page 27 H/P (AM072/096/120/144HXWA✴) Ex.) 32 Ton 8 Ton 8 Ton 16 Ton Pipe size (O.D) Outdoor unit Liquid pipe Gas pipe capacity (Ton) inch inch 9.52 22.22 15.88 28.58 1 1/8 19.05 41.28 1 5/8 The pipe that connects between outdoor unit (1)(2) and the main pipe (3) Select the size of the pipe according to the below table.
  • Page 28 Refrigerant pipe installation Size of the pipe between branch joints (B) Select the pipe size according to the sum of indoor unit capacity which will be connected after the branch. Branch pipe length between 45~90 m Branch pipe length within 45 m (147.6 ft) (147.6 ~ 295.3 ft) Indoor unit capacity Liquid pipe...
  • Page 29 Branch joint Branch joint between outdoor units (C) Specification Classification Model name MXJ-TA3819M 461 and below 135.2 and below Y-joint for outdoor unit (C) MXJ-TA4422M 478 and over 140.2 and over First branch joint (D) Make a selection according to outdoor unit capacity. Outdoor unit capacity Classification Model name...
  • Page 30 Refrigerant pipe installation HR (AM072/096/120/144HXWA✴) Ex.) 32 Ton 8 Ton 8 Ton 16 Ton Pipe size (O.D) Outdoor unit Low pressure High pressure Liquid pipe capacity (Ton) gas pipe gas pipe inch inch inch 9.52 22.22 19.05 15.88 28.58 1 1/8 28.58 1 1/8 19.05...
  • Page 31 Size of the pipe between branch joints (B) Select the pipe size according to the sum of indoor unit capacity which will be connected after the branch. Pipe size (O.D) Indoor unit capacity Liquid pipe Low pressure gas pipe High pressure gas pipe inch inch inch...
  • Page 32 Refrigerant pipe installation Branch joint Branch joint between outdoor units (C) Specification Classification Model name MXJ-TA3819M 461 and below 135.2 and below Liquid/Low pressure Y-joint (C) MXJ-TA4422M 478 and over 140.2 and over MXJ-TA3100M 461 and below 135.2 and below High pressure Y-joint (C) MXJ-TA3800M 478 and over...

  • Page 33: Additional Refrigerant

    Additional refrigerant H/P (AM072/096/120/144HXWA✴ HR (AM072/096/120/144HXWA✴ 192 MBH (16 Ton) 16 Ton 216 MBH (18 Ton) 10 Ton 8 Ton 5/8” (5 m / 16.4’) 3/8” (1 m / 3.3’) 1/2” (5 m / 16.4 ‘) 24 MBH 5/8” (5 m / 16.4’) 5/8”...
  • Page 34 Refrigerant pipe installation Refrigerant pipe installation Basic amount of refrigerant inside the outdoor unit (kg) - Amount of additional refrigerant has to be calculated based on the sum of all liquid pipe lengths. Classification AM072HXWA✴✴ AM096HXWA✴✴ AM120HXWA✴✴ AM192HXWA✴✴ Basic amount [kg (lb)] 5.5 (12.1) 5.8 (12.8) 6.0 (13.2)
  • Page 35 Method to calculate the total amount of additional refrigerant - Amount of additional refrigerant depends on the pipe length (ⓐ) - Amount of additional refrigerant for each indoor unit (ⓑ) = ∑(Amount of additional refrigerant for each connected indoor unit) ❇ Refer to the table - Total amount of additional refrigerant = ⓐ+ⓑ...
  • Page 36 Refrigerant pipe installation Unit amount of Amount of additional Total amount of Number of refrigerant refrigerant additional refrigerant Model name of units Classification [kg/EA (lb/EA)] [kg (lb)] [kg (lb)] indoor unit ① ② ①×② ∑(①×②) 4way cassette 0.45 (0.99) 1.8 (3.96) (AM024FN4DCH✴) 4way cassette 0.69 (1.52)
  • Page 37 Keeping refrigerant pipe To prevent foreign materials or water from entering the pipe, storing method and sealing method (especially during installation)is very important. Apply correct sealing method depending on the environment. Exposure place Exposure time Sealing type Longer than one month Pipe pinch Outdoor Shorter than one month...

  • Page 38: Cutting Or Flaring The Pipes

    Refrigerant pipe installation Cutting or flaring the pipes 1. Make sure that you prepared the required tools. Pipe cutter, Deburring tool, flaring tool and pipe holder, etc. 2. If you want to shorten the pipe, cut it with a pipe cutter ensuring that the cut edge remains at 90° with the side of the pipe.
  • Page 39 Connecting the flared pipes Check if the flaring is properly done according to the standard size. Align the center of the piping and tighten the flare nut with your hands. Then, tighten the flare nut with torque wrench in a direction of the arrow indicated in below illustration. Make sure to use ester oil to coat the flare connection section.
  • Page 40 Refrigerant pipe installation Pipe installation for an outdoor unit 1. The outdoor unit of AM✴✴✴KXWD is the non-modular H/P exclusive system. 2. The outdoor unit of AM✴✴✴HXWA is used for both modular H/P and HR systems. Connect the liquid and gas pipes to the outdoor unit as shown in the figure.
  • Page 41 Caution for welding the pipe to an outdoor unit When welding the pipe, the unit may get damaged by the heat and flame from welding. Use a flame proofing CAUTION cloth to protect the unit from a brazing fire or flame. The O-ring and Teflon packing inside service valve may get damaged by the heat from welding.
  • Page 42 Refrigerant pipe installation The outdoor unit of AM✴✴✴HXWA✴ is a modular product. Connect the refrigerant pipes between outdoor units as shown in the figure. Connect refrigerant pipes between outdoor units. To connect pipes between outdoor units, branch joints (that needs to be purchased separate) must be installed. ❋...
  • Page 43 Caution Correct installation Incorrect installation 200 ~ 300 mm (8 ~ 12 inch) When the piping 1 m (3.28 ft) or less length between 2 m (6.56 ft) or more outdoor unit and the branch joint exceeds 2 m (6.56 ft), install a vertical trap as 2 m (6.56 ft) or more show in the figure.
  • Page 44 Refrigerant pipe installation Examples of refrigerant pipe installation H/P (AM072/096/120/144HXWA✴) 1. Using Y-joint 2. Using distribution header HR (AM072/096/120/144HXWA ) 1. Using Y-joint ENGLISH-44...
  • Page 45 Allowable length of the refrigerant pipe and the installation examples H/P (AM038/048/055 KXWD✴) 1. Connection by Y-joint Outdoor unit 2. Connection by Y-joint/EEV kit Outdoor unit Classification Y-joint connection Y-joint / EEV kit connection The distance between the outdoor unit and the farthest indoor unit ≤ 75 m (246’) Actual Ex) 8 indoor units Ex) 6 indoor units...
  • Page 46 Refrigerant pipe installation EEV kit Model name Remarks MEV-E24SA 2 m (6.6’) or 1 indoor less MEV-E32SA MXD-E24K132A MXD-E24K200A 2 indooor EEV kit ~ Actual pipe Apply to products without EEV MXD-E32K200A Indoor unit lengh (Wall mounted & ceiling) 20 m (66’) or MXD-E24K232A less MXD-E24K300A...
  • Page 47 Classification Header joint connection Y-joint / header joint connection The distance between an outdoor unit and the farthest indoor unit ≤ 75 m (246’) Actual Ex) 8 indoor units Ex) 8 indoor units Length a+g≤ 75 m (246’) a+b+c ≤ 75 m (246’) Maximum Outdoor Equivalent...
  • Page 48 Refrigerant pipe installation Classification Example Remarks a+b+c+d+e+f+g+p ≤ Installing only 170 m (190  m) / 558’ with Y-joint (623’) Equivalent length 170 m Actual pipe Installing with Y-joint: 0.5 m (558’)or a+b+h ≤ 170 (190) m / length Y-joint and (1.64’) less [190 m 558’...
  • Page 49 Note 1) Required condition Classification Condition Example 45 m (148’) ≤ b+c+d+e+f+g+p ≤ 90 m (295’): Size First branch joint ~ of the branch pipe (b, c, d, e, f, g) must be increased Farthest Indoor unit by 1 grade If the size of the main pipe (pipe that connects between the outdoor unit ~ first branch joint) was not increased by 1 grade: a+(b+c+d+e+f+g)×2 +h+i+j+k+l+m+n+p ≤...
  • Page 50 Refrigerant pipe installation Classification Example Remarks Installing only a+b+c+d+e+f+g ≤ 170 m Equivalent length with MCU (190  m) / 558’ (623’) Y-joint: 0.5 m Actual pipe 170 m (558’) (1.64’) length or less Distribution (Equivalent [190 m (623’) Installing with a+g+m ≤ 170 m (190  m) / header: 1 m length) or less]...

  • Page 51: Installing The Branch Joints

    Installing the branch joints Branch joints must be installed ‘horizontally’ or ‘vertically’ . Horizontal installation Vertical installation Cut the connection part of the branch joint or the provided socket, according to the diameter of the connection pipe, before connecting them. NOTE Over 10 ~ 15 mm (0.39 ~ 0.59 inch) Install the branch joint within ±15°...
  • Page 52 Refrigerant pipe installation Installing the distribution header 1. Select the reducer that fits the diameter of the pipe. Socket Provided item Pipe * Socket Pipe* Pipe* Pipe* To indoor unit To indoor unit To outdoor unit To outdoor unit Socket Socket <Gas side>...
  • Page 53 3. Install the distribution header horizontally. Install the distribution header horizontally so that its ports do not face down. Socket Distribution header Horizon line Below ±10° Pipe (Separately purchased item) Horizon line Horizon line Below ±15° < Liquid side > Horizon line Below ±15°...
  • Page 54 Refrigerant pipe installation Installing the branch joint between outdoor units Installation of outdoor joints (AM072/096/120/144HXWA✴) Low pressure gas pipe High pressure gas Branch joint between outdoor units must not pipe be installed in vertical position. Liquid pipe Connect to other outdoor unit ❋...
  • Page 55 Installing the MCU MCU specification Model MCU-S6NEE1N MCU-S4NEE1N MCU-S4NEE2N Exterior of MCU Up to 2 units Number of connectable ❋ Refer the detail information Up to 6 units Up to 4 units indoor units of installation Maximum capacity of connectable indoor 198 MBH 198 MBH 198 MBH...
  • Page 56 Refrigerant pipe installation How to connect the pipes 70 mm (2.75  inch) Protect with wet towel when welding 70 mm (2.75 inch) Pipe connection from outdoor unit Low pressure gas pipe connection (welding) High pressure gas pipe connection (welding) Liquid pipe connection (Flare) Pipe connection to indoor unit Liquid pipe (Flare) Gas pipe (Flare)

  • Page 57: Electrical Wiring Work

    Electrical wiring work Specification of the circuit breaker and power cable Electric Characteristics 1. Heat Pump (1 phase 208 ~ 230V) Module 1 Nominal Model name Power Supply Capacity (Ton) Comp 1 3 Ton AM038KXWD✴ 4 Ton AM048KXWD✴ 19.2 5 Ton AM055KXWD✴...
  • Page 58 Electrical wiring work 3. Heat Pump/Heat Recovery (460 V) Module 1 Module 2 Module 3 Nominal Power Supply Power Supply Power Supply Capacity Model name Comp Comp Comp Comp Comp Comp (Ton) 6 Ton AM072HXWAJ✴ 8 Ton AM096HXWAJ✴ 10 Ton AM120HXWAJ✴ 12.5 15.6 12 Ton...
  • Page 59 Caution for electrical work You must install ELCB or MCCB + ELB CAUTION - ELCB: Earth leakage breaker - MCCB: Molded case circuit breaker - ELB: Earth leakage breaker Do not operate the outdoor unit before completing the refrigerant pipe work. Do not disconnect or change the cable inside the product.
  • Page 60 Electrical wiring work Power and communication cable configuration Main power and the ground cable must be withdrawn through the knock-out hole on the bottom-right or right side of the cabinet. Withdraw the communication cable from the designated knock-out hole on the bottom-right side of the front part. Install the power and communication cable using separate cable protection tube.

  • Page 61: Power Wiring Diagram

    Power wiring diagram 1 phase 2 wires 208~230 V (AM✴✴✴KXWD✴) Outdoor unit Indoor unit 1 phase 2 wires 208~230 V MCCB + ELB MCCB + ELB ELCB ELCB Communication cable Wired remote Grounding controller Outdoor unit Indoor unit 1 phase 2 wires 208~230 V MCCB + ELB MCCB + ELB ELCB...
  • Page 62 Electrical wiring work 3 phase 3 wires 208~230 V [AM✴✴✴HXWAF✴] / 3 phase 3 wires 460 V [AM✴✴✴HXWAJ✴] 3 phase 3 wires 208 ~ 230 V [AM✴✴✴HXWAF✴] 3 phase 3 wires 460 V [AM✴✴✴HXWAJ✴] Main outdoor unit Sub outdoor unit 1 Sub outdoor unit 2 MCCB+ MCCB+ MCCB+...

  • Page 63: Selecting Solderless Ring Terminal

    Selecting solderless ring terminal Select a solderless ring terminal for a power cable according to the nominal dimensions for cable. Apply insulation coating to the connection part of the solderless ring terminal and the power cable. Silver solder [Unit :kg(lb)] Nominal dimensions for 4/6 (0.006/0.009) 10 (0.01) 16 (0.02) 25 (0.03)

  • Page 64: Connecting The Power Terminal

    Electrical wiring work Connecting the power terminal Connect the cables to the terminal board with solderless ring terminals. Properly connect the cables by using certified and rated cables and make sure to fix them properly so that external force is not applied to the terminal. Use a driver and wrench that can apply the rated torque when tightening the screws on the terminal board.
  • Page 65 AM✴✴✴HXWAF✴ / AM✴✴✴HXWAJ✴ 3 phase 3 wires 208 - 230 V [AM✴✴✴HXWAF✴] Communication cable 3 phase 3 wires 460 V [AM✴✴✴HXWAJ✴] between outdoor units MCCB+ External power supply / External contact signal ELCB Protection tube for power cable Lock nut (field supply) Conduit (field supply) Conduit mounting plate When removing the outer sheath of the power supply cable, be careful not to scratch the inner sheath of the...
  • Page 66 Electrical wiring work Examples of how to use the cable striper <Cable striper> 1. Adjust the blade position by coin. (Controller is at the bottom side of the tool.) Fix the blade position according to the outer sheath thickness of the power cable. 2.
  • Page 67 Fixing the power cable AM038/048/055KXWD✴ 1 phase 208 ~ 230 V MCCB+ ELB Extermal Contact Signal /Communication cable between Indoor units ELCB Extermal Power Supply AM✴✴✴HXWAF✴/ AM✴✴✴HXWAJ✴ ✴✴✴ ✴ 3 phase 3 wires 208 - 230 V [AM HXWAF ✴✴✴ ✴ Communication cable 3 phase 3 wires 460 V [AM HXWAJ...
  • Page 68 Electrical wiring work Connect the ring terminal of 3 phase cable AM038/048/055KXWD✴ AM✴✴✴HXWAF✴/AM✴✴✴HXWAJ 1. Cut the power cable to an appropriate length and connect it with the solderless terminal. 2. After connecting the power cable to the terminal as seen in the illustration, fix it with cable tie. 3.
  • Page 69 Fixing the ground cable Connect the ground cable to the grounding hole inside the power supply box. AM038/048/055KXWD✴ AM✴✴✴HXWAF✴/AM✴✴✴HXWAJ Grounding Grounding Withdrawing the power cable Through the cable withdrawing hole, penetrate the knock out hole on the side and connect the protection tube (for power cable) up to the power box.
  • Page 70 Electrical wiring work Installing the Solution device AM038/048/055KXWD✴ Solution device terminal Do not connect the power or communication cable here. Communication cable terminal (Outdoor unit ~ indoor unit) ❋ When connecting the communication cable, use a terminal block to fix it. HXWAF / AM HXWAJ When the number of indoor units installed with the outdoor unit is 16 or less...
  • Page 71 Connecting the MCU Example 1 Outdoor Indoor unit Indoor unit MCCB unit 208 - 230 V Example 2 Outdoor Indoor unit Indoor unit Indoor unit MCCB unit 208 - 230 V Power must be supplied to the MCU separately from the outdoor unit. Connect the communication cable of the outdoor unit (F1, F2) to the communication cable of the MCU (F1, F2) Power cable connection should be done with the solderless ring terminal.

  • Page 72: Grounding Work

    Electrical wiring work Grounding work Grounding must be done by a qualified installer for your safety. Grounding the power cable The standard of grounding may vary according to the rated voltage and installation place of the air conditioner. Ground the power cable according to the following table. Power condition Voltage to ground is lower than 150 V Voltage to ground is over 150 V...

  • Page 73: Air Tightness Test And Vacuum Drying

    Air tightness test and vacuum drying Air tightness test Use tools for R-410A to prevent the inflow of foreign substances and resist against the internal pressure. Do not remove the core of filling port. Use Nitrogen gas for air tightness test as shown in the illustration. AM038/048/055KXWD Manifold gauge Liquid pipe...
  • Page 74 Air tightness test and vacuum drying HXWAF / AM HXWAJ Manifold gauge Filling port Liquid pipe High pressure gas pipe Low pressure gas pipe Apply pressure to the liquid side pipe and gas side pipe If you apply pressure at more than 4.1 MPa (594.6 psi), pipes (when installing outdoor units in module) with Nitrogen may get damaged.
  • Page 75 Vacuum drying pipes and indoor units Use tools for R-410A to prevent the inflow of foreign substances and resist against the internal pressure. Use vacuum pump that allows vacuuming under -100.7 kPa (5 Torr). Use the vacuum pump with the check valve to prevent pump oil from flowing backward while the vacuum pump is stopped.

  • Page 76: Pipe Insulation

    Pipe insulation Insulating the refrigerant pipes and branch joints Check for gas leakage before completing (the hose and pipe insulation) and if there is no sign of leakage, make sure to insulate the pipes and hoses. Use EPDM material insulator that meets the following conditions. Test item Unit Standard...
  • Page 77 Insulate the refrigerant pipe Make sure to insulate the refrigerant pipe, branch joint, distribution header, and the connection part of the pipes. If you insulate the pipes, condensed water will not fall from the pipes. Check if there are any cracks on the insulation at the bent part of the pipe. Insulator Clamp Insulator...

  • Page 78: Insulating The Branch Joint

    Pipe insulation Insulate the distribution header Fix the distribution header with a cable tie and cover the connected part. Insulation Insulate the distribution header and the welded part and wrap the connected part with an adhesive insulation tape to prevent dew formation. Adhesive insulation tape Insulate after welding a stopper Insulate the refrigerant...
  • Page 79 Insulating the pipe located inside of the outdoor unit With a pipe insulator, insulate the pipe up to whole service valve located inside of the outdoor unit. Seal the gap between the outdoor unit pipe and the insulator. Rainwater and dewdrops may soak through the gap between the pipe and the insulation of the outdoor unit installed on the outside.

  • Page 80: Refrigerant Collection

    Refrigerant collection Collecting refrigerant (to a refrigerant container) AM038/048/055KXWD✴ Manifold gauge Liquid pipe (High pressure) Gas pipe (Low pressure) Refrigerant container Scale ENGLISH-80...
  • Page 81 AM✴✴✴HXWAF✴ / AM✴✴✴HXWAJ✴ You cannot collect the entire refrigerant in the system at once during pump down operation. Therefore you must collect additional refrigerant into the empty refrigerant container prior to pump down operation. 1. Connect a refrigerant container to an outdoor unit as shown in the illustration and operate about 50 % of the indoor units in cooling mode.

  • Page 82: Charging Refrigerant

    Charging refrigerant Single installation Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant. If you cannot add the whole quantity of the refrigerant while the outdoor unit is stopped, open the gas side and liquid side service valve.
  • Page 83 Open the gas side and liquid side service valve completely after charging the refrigerant. (If you operate the air conditioner with the service valve closed, the important parts may be damaged.) CAUTION Put on safety equipment when charging refrigerant. Do not charge the refrigerant when you adjust or control other product such as indoor units or EEV kits. If you charge the refrigerant with the front cabinet open, be very careful with the fan on the top of the product to prevent personal injury.

  • Page 84: Basic Segment Display

    Basic segment display Step Display content Display SEG 1 SEG 2 SEG 3 SEG 4 At initial power input Checking segment display “8” “8” “8” “8” SEG 1 SEG 2 SEG 3 SEG 4 While setting communication Number of communicated Number of connected indoor between indoor and outdoor units...
  • Page 85 2. Setting the number of connectiong indoor units K1 K2 K3 K4 Step Button Display Description Remarks The number of indoor units Step 1 Display of outdoor unit Required to set Press the K1 and K2 buttons for Ready to set Example) 2 seconds simultaneously.
  • Page 86 Setting outdoor unit option switch and key function K3 (Number of press) KEY operation Display on 7-Segment 1 time Initialize (Reset) operation Same as initial state View Mode Table. View mode 1 Display K4 (Number of press) Display content SEG 1 SEG 2,3,4 1 time Outdoor Capacity...
  • Page 87 Installing and setting the option with tact switch Refer to page 90 for the information about setting the option KEY. Option item Input unit SEG1 SEG2 SEG3 SEG4 Funcion of the option Remarks Disabled (Factory default) Emergency E560 will occur when all Set compressor 1 as malfunction state operation for Individual...
  • Page 88 Setting outdoor unit option switch and key function Option item Input unit SEG1 SEG2 SEG3 SEG4 Funcion of the option Remarks Disable (Factory default) When equivalent length of farthest indoor unit from Setting long the outdoor unit is between Long piping level 1 piping condition 100~170 m (328’~558’) (Setting is...
  • Page 89 AM✴✴✴HXWAF✴ / AM✴✴✴HXWAJ✴ K21 K22 SW58 K21 K22 ❋ If you install HR products, you must match the address between the MCU and the indoor unit. Switch Setting Function Remarks Setting can be done from the main outdoor Setting total number of installed indoor unit unit only (sub unit: setting is unnecessary) SW51 / SW52...
  • Page 90 Setting outdoor unit option switch and key function Setting outdoor unit key function AM038/048/055KXWD✴ AM✴✴✴HXWAF✴ / AM✴✴✴HXWAJ✴ K21 K22 Installing and setting the option with tact switch and explanation of the functions Setting the option 1. Press and hold K2 to enter the option setting. (Only available when the operation is stopped) - If you enter the option setting, display will show the following.
  • Page 91 4. After selecting the function for options, press and hold the K2 switch for 2 seconds. Edited value of the option will be saved when entire segments blinks and tracking mode begins. Edited option will not be saved if you do not end the option setting as explained in above instruction. CAUTION ❋...
  • Page 92 Setting outdoor unit option switch and key function Optional item Input unit SEG1 SEG2 SEG3 SEG4 Function of the option Remarks 100% (Factory default) 95 % 90 % 85 % 80 % When restriction option is 75 % Current Individual set, cooling and heating restriction rate 70 %...
  • Page 93 Optional item Input unit SEG1 SEG2 SEG3 SEG4 Function of the option Remarks Disable (Factory default) When equivalent length of Setting long- farthest indoor unit from piping condition Long piping level 1 the outdoor unit is between (Setting is Main 100~170 m (328’~558’) unnecessary When equivalent length of...
  • Page 94 Setting outdoor unit option switch and key function Setting key operation and checking the view mode with tact switch K21 K22 K1 (Number of KEY operation Display on segment press) Press and hold Auto trial operation “K” “K” “BLANK” “BLANK” 1 time Refrigerant charging in Heating mode “K”...
  • Page 95 K2 (Number of KEY operation Display on segment press) Refrigerant charging in Cooling mode K - 5 - BLANK - BLANK Trial operation in Cooling mode K - 6 - BLANK - BLANK Pump down all units in Cooling mode K - 7 - BLANK - BLANK HR: Pipe connection inspection K - 8 - BLANK - BLANK...
  • Page 96 Setting outdoor unit option switch and key function K21 K22 Display on segment K4 (Number of KEY operation press) SEG 1 SEG2, 3, 4 1 time Outdoor unit model (a) Capacity Off, 1, 2 2 times Target frequency (Compressor 1) 120 Hz 1, 2, 0 3 times...
  • Page 97 Display on segment K4 (Number of KEY operation press) SEG 1 SEG2, 3, 4 26 times Current frequency of the compressor 2 120 Hz 1, 2, 0 27 times Suction 2 temperature -42 °C -, 4, 2 When master indoor unit is not set BLANK, N, D 28 times Address of master indoor unit...

  • Page 98: Water Pipe Installation

    Water pipe installation It is recommended to use closed circuit cooling tower. If open cooling tower is applied, use intermediate heat exchanger and make sure that supplied heat source water system is closed circuit. Water pipe installation <Water pipe diagram> Water pipe Flange 2 way solenoid valve...
  • Page 99 Maintain appropriate concentration level of anti-freeze according to temperature of water inlet. Note 2): Strict management of anti-freeze concentration level is required. Consult Samsung before application. Note 3): When inlet water temperature is outside of limit, consult Samsung before application.
  • Page 100 Water pipe installation 7. If you stop the product for long time or in night time, water pipe circuit may freeze naturally when the temperature around the outdoor unit is under 0 °C (32 °F). When water pipe circuit freezes, it will cause damage to the plate type heat exchanger and therefore preventive measure must be taken according to the situation.

  • Page 101: External Contact Connection

    External contact connection Flow switch connection (Mandatory connection) When flow switch is used, it will receive signal of the heat source water circulation and detects if there is any problem on water circulation before operating the outdoor unit. When there is no contact signal input to the flow switch, it will be diagnosed as 'Problem with the heat source water circulation' and outdoor unit will stop operating to protect outdoor unit.

  • Page 102: Explanation Of Optional Functions

    Explanation of optional functions 2 way solenoid valve When installing multiple number of outdoor units to a common water pipe, 2 way valve will cut the cooling water supply to an outdoor unit that is not operating, so it will increase the overall efficiency of the system. 2 way solenoid valve will operate automatically depending on the operation status of the indoor and outdoor units.
  • Page 103 Flow control After setting the outdoor unit option switch, you may connect variable flow control valve that is controlled at 0 ~ 10 V of input signal. If the power of variable flow control valve is 208 - 230 V, you may use the internal power of the outdoor unit. Use the external power if the load of variable solenoid valve is maximum 250 V and current over 0.2 A.) Output range of the variable flow control valve is different depending on the setting of the outdoor unit option switch (Refer to “Setting key operation and checking the view mode with tact switch”...
  • Page 104 Explanation of optional functions Wiring method for optional functions Installation example of AC 208~230 V, direct operation type 2 way solenoid valve 208 ~ 230 V (AM✴✴✴HXWAF✴, AM✴✴✴KXWD✴) Models 2 way solenoid valve AC 208 -230 V AC 208 -230 V Relay 2 way solenoid valve OUT...
  • Page 105 Installation example of AC 460 V, direct operation type 2 way solenoid valve 460 V (AM✴✴✴HXWAJ✴) Models 2 way solenoid valve AC 208 ~ 230 V AC 208 ~ 230 V Relay 2 way solenoid External Power valve OUT Relay Controller PUMP OUT Flow switch PUMP F/B IN...
  • Page 106 Explanation of optional functions Flow chart of outdoor unit external contact controller Indoor unite remote controller ON 2 way solenoid valve On Pump On Flow switch On System stops System operation Flow switch detector circuit must be detected for more than 30 seconds within 3 minutes after first operation signal output of the pump.

  • Page 107: Things To Check After Completing The Installation

    Things to check after completing the installation 1. Before supplying the power, use DC 500 V (AM✴✴✴HXWAF✴) or DC 600 V (AM✴✴✴HXWAJ✴) insulation resistance tester to measure the power (3 phase: R, S, T) terminal and the outdoor unit grounding. - Measurement should be over 30 MΩ. 2.
  • Page 108 Things to check after completing the installation 4. Check the following after the installation is completed. Have you checked the external surface and the inside of the outdoor unit? Is there any possibility of short-circuit caused by the heat of an outdoor unit? Outdoor unit Is the place well-ventilated and ensures space for service? Is the outdoor unit fixed securely to withstand any external force?

  • Page 109: Inspection And Test Operation

    Inspection and test operation Precautions before trial operation Check if the circulation water condition matches the K21/K22 setting of the outdoor unit option switch. (Refer CAUTION to 'Setting outdoor unit option switch and key function' on page 89) Make sure that water pipe facility work of the building is done appropriately. - Especially, check the installation location of strainer, air discharge valve (air ventilation), auto water supply valve, and expansion tank and make sure their location is appropriate.
  • Page 110 Inspection and test operation Checklist before auto trial operation 1. Check the power cable and communication cable of the indoor and outdoor unit. 2. Supply power to the outdoor unit 6 hours before trial operation to pre-heat the crank case heater. 3.
  • Page 111 Auto trial operation 1. If the Auto Trial Operation is not completed, normal operation will be prohibited. - When the auto trial operation is not completed, UP (UnPrepared) will appear on the segment after the communication check and restrict compressor from operating. (UP Mode will be cleared automatically when auto trial mode is completed.) - Auto trial operation may take 20 minutes to maximum 2 hours depending on the operation status.
  • Page 112 Inspection and test operation Measures to take when an E503 error occurs (When the “inspection required” message appears on the S-NET pro report) Is the service valve of the outdoor unit Open the service valve of the outdoor unit open? Is 4 way valve and main EEV operating Check the 4 way valve and Main EEV normally?
  • Page 113 Measure to take when E505, E506 error occurs Enable vacuum mode on all outdoor units Is the service valve of the outdoor unit open? Open the service valve of the outdoor unit Does the value on the pressure sensor of the installed outdoor unit satisfy the following? Reset outdoor unit "Max./Min.

  • Page 114: Automatic Refrigerant Amount Checking Function

    Automatic refrigerant amount checking function This function detects the amount of refrigerant in the system Start Press the Tact switch "K2" 5 times Input S-CHECKER signal Satisfy the temperature condition Satisfy the temperature condition Check the amount of refrigerant Check the amount of refrigerant Check stability Check stability Connect S-Net Pro...
  • Page 115 When the temperature is outside of guaranteed range, you can not obtain an accurate result. - Indoor : 20 ~ 32 °C (68 ~ 89.6 °F) CAUTION - Water temperature : 15 ~ 40 °C (59 ~ 104 °F) If the operation cycle is not stable, refrigerant amount detection operation may end. Accuracy of the results may decrease if the product is not operated for a long period time before the refrigerant amount detection function operation is activated.

  • Page 116: Maintenance

    Maintenance Precautions on plate type heat exchanger maintenance ❋ Make sure to tell the user to keep this installation manual. 1. When the product was not operated for long period of time, check the followings: - Check the water to see if the water quality is meets the standard. - Clean the strainer.
  • Page 117 Recommended number of inspection for normal operation Side effects when Inspection list Inspection standard Number of inspection inadequate Have you set the electric conductivity value properly? Corrosion, water scale or Forced drainage Once a week Is electric conductivity sensor working properly? slime may occur Is auto valve working properly? Is cooling water corrupted or have floating...

  • Page 118: Cooling Water Management

    Cooling water management 1. Standard of cooling water quality for air conditioning and the number of water quality inspection ❋ Make sure to comply the standard for water quality management. Cooling water with high level of foreign substances can cause pipe corrosion or creation of water scale which effects the product's performance and lifespan.
  • Page 119 2. Operation range of water When the amount of cooling water is out of the operation range, stop the outdoor unit and take care of the cause before re-start the operation (Operation range : 60~120 % of the standard amount of water flow) Flowrate of cooling water (GPM) Model name AM038KXWD✴✴...
  • Page 120 Cooling water management Flowrate of cooling water (GPM) Model name AM072HXWA✴✴ AM096HXWA✴✴ AM120HXWA✴✴ AM192HXWA✴✴ Standard condition Cooling/Heating 21.1 25.4 30.1 50.2 Operation range Cooling/Heating 12.7 ~ 25.4 15.3 ~ 30.4` 18 ~ 36.2 30.1 ~ 60.2 12.0 AM072HXWA✴✴ 10.0 AM096HXWA✴✴ AM120HXWA✴✴...
  • Page 121 3. Ground heat exchanger circulation water (anti-freeze) usage standard (mandatory checklist) When using ground heat source, use anti-freeze to manage the freezing point. If you do not use anti-freeze, it will cause the pipes to freeze and burst. Note that the manufacturer does not take responsibility for any damage caused. 1) All the circulating water (anti-freeze) and additives (corrosion inhibitor, bacteria inhibitor, foam inhibitors) must be used after consulting with the business ordering party or supervisor for its impact on environment, toxicity, corrosiveness, harmfulness to human and management plan.
  • Page 122 Installation check card When installing the refrigerant and water piping, installer must fill in the below installation check card. Installation date Test Run Date Firm Name Installer Contact Name Install Technician Contact Technician Code Firm Name Inspect Association Contact Firm Name Inspect Supervisor Contact Outdoor Unit Model...
  • Page 123 ❋ This product is irrelevant to any installation or performance problem of the cooling tower and boiler. ❋ This installation specification of the Samsung products will be managed as a reference for follow-up management. ❋ This product must be installed by the installation experts. Installing on your own or by unauthorized installer will be cause of product failure.
  • Page 124 Self-checklist for installer Item Checklist Check standard Check result Did you install the separate circuit breakers to cut the Separate circuit breaker must be used Distribution board power of each indoor unit? to install indoor unit power Did you connect the outdoor unit power cable in Visual check correct order of RST power? Outdoor unit...
  • Page 125 Is the internal pressure of the pipe at 1~4kg/cm2, when the ground water Visually check the pressure gauge circulation pump is stopped? Check the value of ground thermal Water supply Ground What is the value of ground thermal conductivity on ground heat usage system heat conductivity?

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