Table of Contents
Related Manuals for Samsung AM***FXVAF Series
Summary of Contents for Samsung AM***FXVAF Series
- Page 1 DVM S AM✴✴✴FXVAF✴ Series AM✴✴✴FXVAJ✴ Series AM✴✴✴HXVAF✴ Series AM✴✴✴HXVAJ✴ Series AM✴✴✴KXVTF✴ Series AM✴✴✴KXVTJ✴ Series AM✴✴✴KXVGJ✴ Series Air Conditioner installation manual imagine the possibilities Thank you for purchasing this Samsung product.
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Page 2: Table Of Contents
Contents 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. • Hazards or unsafe practices that may result in severe personal injury or death. - Page 4 Safety precautions Check the following before installation and service work. Before welding, remove dangerous and inflammable things that may cause an explosion and fire around the work. Before welding, remove the refrigerant from inside the pipe or the product. - If you perform welding while refrigerant is in the pipe, it may increase the pressure of the refrigerant and cause the pipe to burst.
- Page 5 CAUTION SIGNS Do not install the drain pipe directly to the bottom part of the outdoor unit and built a proper drainage so that water drains out smoothly. If not, pipe may freeze or bursts during winter time and cause damage to the product or water leakage.
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Page 6: Preparing For Installation
Safety precautions Changes in DVM S (inverter) compare to conventional models that has to noted when installing For optimal distribution of the refrigerant, you must use Y-joint as branch joint for connecting outdoor units. (Do not use T-joint) You cannot operate normally if you do not complete the trial operation through outdoor unit key mode. You must use KEY MODE to run trial operation. -
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Preparing for installation Outdoor unit combination Make sure to use an indoor unit that is compatible with DVM S. 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. -
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Preparing for installation 22TON 24TON 26TON 28TON Model name for Combination AM264JXVA✴✴ AM288JXVA✴✴ AM312JXVA✴✴ AM336JXVA✴✴ Number of individual outdoor units AM072✴✴✴ AM096✴✴✴ Combined outdoor AM120✴✴✴ unit AM144✴✴✴ AM168✴✴✴ AM192✴✴✴ 264000 288000 312000 336000 Cooling(btu/h) Nominal Capacity 297000 324000 351000 378000 Heating(btu/h) 252000 276000... -
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Module combination for AM192H✴✴✴J✴ , AM216K✴✴✴J✴ 18 TON 34 TON 36 TON Model name for Combination AM216KXVGJ✴ AM408KXVGJ✴ AM432KXVGJ✴ Number of individual outdoor units AM192H✴✴✴J✴ Combined outdoor (Large A type) unit AM216K✴✴✴J✴ (Large B type) Cooling(btu/h) 216000 408000 432000 Nominal Capacity 243000 459000 486000... - Page 10 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.
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Page 11: Selecting Installation Location
Selecting installation location Decide the installation location, with the consideration of the following conditions, under user’s approval. Place where hot discharge air or noise from the outdoor unit may not disturb the neighbor (Especially in residential areas, keep the operation hours in mind.) Place where structure can bear the weight and vibration of the outdoor unit. - Page 12 Selecting installation location • System air conditioner may cause static noise when listening to AM stations. Therefore, select an installation location for indoor unit where electrical wiring can be done while keeping certain distance from a radio, CAUTION computer and stereo equipment. - Especially, keep the unit at least 3m(9.84inch) away from the electrical equipment in an area with weak electromagnetic waves and put the main power cable and communication cables in a separately installed protection tube.
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Page 13: Space Requirement For Installation
Space requirement for installation Space requirement was decided based on following conditions; Cooling mode, outdoor temperature of 35°C (95°F). Larger space is required if the outdoor temperature is higher than 35°C (95°F) or if the place is heated easily by quantity of solar radiation. - Page 14 Space requirement for installation Module installation Over 300 (12) Height of the wall is Over 100 (4) Over 400 Over 400 Front side unlimited Over 100 (4) Front (16) (16) side Over 100 (4) <Case 1> <Case 2> Over 100 (4) Over 100 (4) Over 100 (4) Over 100 (4) Front side...
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Page 15: 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 (1) *Installation socket (1) Brand Label (1) Instruction sheet (1) ❋ Models with installaton socket MODEL (AM✴✴✴F✴, AM✴✴✴H✴... - Page 16 Accessories Optional accessories Following optional accessories are needed for connecting pipes between the indoor and outdoor units. Specification Classification Model Name MXJ-YA1509M 51 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...
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Page 17: 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. -
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Base construction and installation of the outdoor unit Outdoor unit installation Base ground H beam or anti-vibration frame Over 200mm (8inch) Outdoor unit base mount and anchor bolt position Unit: mm (inch) Outdoor unit - Anti-vibration frame (4-Ø 12) Anti-vibration - Base ground (4-Ø... -
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Examples of draining work Construct the drainage ditch with reinforced concretes and make sure that water-proofing work is done. For smooth draining of defrost water, make sure to apply 1/50 slope. Construct a drainage around the outdoor unit to prevent the defrost water (from the outdoor unit) from stagnating, overflowing or freezing near the installation space. - Page 20 Base construction and installation of the outdoor unit Cautions regarding on connecting the anchor bolt Tighten the rubber washer to prevent the bolt connection part of the outdoor unit from corroding. CAUTION Rubber washer Anchor specification Diameter of Anchor length Sleeve length Fastening Size...
- Page 21 Caution for installing discharge duct Static pressure of the discharge duct should be within the standard specification 78.45 Pa (0.315 W.G) when CAUTION installing the duct. If you remove the fan guard to install the discharge duct, make sure to install a safety net on the duct outlet. Foreign substance may enter into the product and there could be a risk of personal injury.
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Page 22: Installing The Wind/Snow Prevention Duct
Installing the wind/snow prevention duct Installing the outdoor unit around the obstacles It is necessary to install a wind/snow prevention duct(field supply) to direct exhaust from the fan horizontally, when it is difficult to provide a minimum space of 2m (6.56ft) between the air outlet and a nearby obstacle. Upper floor Discharged air Discharged air... -
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Installing the outdoor unit in windy region In windy regions such as near sea shores, protection wall or wind protection duct must be installed for normal operation of the outdoor unit. (Refer to the illustration of the snow prevention duct, for installing the wind protection duct.) Install the wind prevention duct with the consideration of major wind direction. -
Page 24: 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 works WARNING with the service valve open, the pipe inhales the air and it makes the pressure inside of the refrigerant cycle abnormally high which may lead to explosion and injury. - Page 25 Selecting refrigerant pipe First branch 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 an outdoor unit and the farthest indoor unit exceeds 90m (295.28ft), you must increase the size of the pipe (main pipe) by one grade which connects between the outdoor unit to the first branch joint.
- Page 26 Refrigerant pipe installation 16Ton 12Ton 6Ton Ex.) 34 Ton Pipe size (O.D) Liquid pipe Gas pipe inch inch 15.88 28.58 1 1/8 19.05 34.92 1 3/8 19.05 41.28 1 5/8 Size of the pipe connected to the outdoor unit (A) Select the size of the pipe according to the below table.
- Page 27 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. ❋ However, if the size of the pipe between branch joints (B) is bigger than the size of the pipe connected to the outdoor unit (A), apply the pipe size (A).
- Page 28 Refrigerant pipe installation 16Ton 12Ton 6Ton 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.
- Page 29 Branch joint (E) Select a branch joint according to the sum of indoor unit capacity which will be connected after the branch. 1) Y-joint 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...
- Page 30 Refrigerant pipe installation 16Ton 12Ton 6Ton Ex.) 34 Ton Pipe size (O.D) Liquid High pressure Gas inch inch inch 15.88 28.58 1 1/8 28.58 1 1/8 19.05 34.92 1 3/8 28.58 1 1/8 19.05 41.28 1 5/8 34.92 1 3/8 Size of the pipe connected to the outdoor unit (A) Select the size of the pipe according to the below table.
- 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. ❋ However, if the size of the pipe between branch joints (B) is bigger than the size of the pipe connected to the outdoor unit (A), apply the pipe size (A).
- Page 32 Refrigerant pipe installation 16Ton 12Ton 6Ton 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...
- Page 33 Branch joint (E) Select a branch joint according to the sum of indoor unit capacity which will be connected after the branch. • Y-joint 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...
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Refrigerant pipe installation Basic type - additional refrigerant 144MBH (12Ton) 216MBH (18Ton) (144MBH + 72MBH) 1/2" (5m/16.4') 3/8" (1m/3.3') 1/2" (5m/16.4') 12MBH 1/2" (5m/16.4') 5/8" (10m/32.8') 1/4" (5m/16.4') 24MBH 1/2" (5m/16.4') 1/2" (10m/32.8') 1/2" (10m/32.8') 1/4" (10m/32.8') 3/8" (10m/32.8') 24MBH 1/4"... - Page 35 Amount of additional refrigerant for each indoor unit (ⓑ) (Unit : kg(lb)) Capacity (kBtu) 6.3 7.5 9.5 12 15 18 24 27 28 30 36 42 48 54 60 72 76.8 96 Model 4way cassette S 0.45 0.45 0.45 0.45 0.69 0.69 0.69...
- Page 36 Refrigerant pipe installation Method to calculate total amount of additional refrigerant - Amount of additional refrigerant depending on the pipe length (ⓐ) - Amount of additional refrigerant for each indoor unit (ⓑ) = ∑(Amount of additional refrigerant for each connected indoor unit) ❇...
- Page 37 Unit amount of Amount of Total amount Number of units refrigerant (kg/ additional of additional Model name of Classification refrigerant (kg) refrigerant (kg) indoor unit ① ② ①×② ∑(①×②) 4way cassette 0.45 (0.99) 1.8 (3.96) (AM024FN4DC✴) 4way cassette 0.69 (1.52) 2.07 (4.56) (AM036FN4DC✴) ⓑ...
- Page 38 Refrigerant pipe installation 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...
- Page 39 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 40 Refrigerant pipe installation 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.
- Page 41 Pipe installation for an outdoor unit 1. Direction of the pipe Refrigerant pipe can be withdrawn from the front, left and right side. Take necessary method to install the pipes according to the condition of the installation site. Front side connection Left side connection Right side connection Caution for using knock-out hole...
- Page 42 Refrigerant pipe installation 2. Connecting refrigerant pipe for outdoor unit Classification Front side connection Right/left (and bottom) side connection • First, remove the piping cover from the outdoor • Separate the knock-out hole at the bottom side unit. of the unit and install the pipe. •...
- Page 43 Caution for welding the pipe to an outdoor unit CAUTION • When welding the pipe, the unit may get damaged by the heat and flame from welding. Use a flame proofing cloth to protect the unit from a welding fire or flame. Sensor for detecting outside temperature is located on the left side of the welding part so be extra careful not to damage the sensor when welding.
- Page 44 Refrigerant pipe installation 3. Pipe installation between the outdoor units You will need branch joints, which is an optional accessory, for connecting in between outdoor units in order to combine outdoor units in module. ❋ For optimal distribution of the refrigerant, you must use Y-joint as branch joint for connecting outdoor units. (Do not use T-joint) When you install the outdoor units in module, there is no restriction of installation order among outdoor units.
- Page 45 Examples of refrigerant pipe installation 1. Using Y-joint 2. Using distribution header 1. Using Y-joint Note 1) Note 1) Direct-connected indoor unit without MCU (for HR only) - This indoor unit can only be used for cooling operation. (Heating operation is not possible.) - Connect indoor unit to liquid and low pressure gas pipe.
- Page 46 Refrigerant pipe installation Allowable length of the refrigerant pipe and the installation examples Classification Single Installation Module installation Outdoor unit Outdoor unit Branch joint Branch joint Installing only with Y-joint Indoor unit Indoor unit Outdoor unit Outdoor unit Branch joint Distribution header Distribution header Installing with...
- Page 47 Classification Example Remarks Installing only with b+c+d+e+f+g+p ≤ 45m (148') Y-joint 45m (148') Installing with Y-joint i+k ≤ 45m (148') Maximum or less and distribution header First branch allowable joint ~ Farthest Pipe length Installing only with length after i ≤ 45m (148') Indoor unit distribution header branch joint...
- Page 48 Refrigerant pipe installation Classification Installing only with Y-joint Installing only with Cooling Only Indoor Unit (Connecting Only Low Pressure Gas Pipe / Liquid Pipe note3 Installing with MCU and Y-joint Classification Example Remarks Installing only with Equivalent length a+g+j ≤ 200 m (220 m)/656'(722') Actual pipe •...
- Page 49 Classification Example Remarks Outdoor unit ~ 110 m / 110 m H1 ≤ 110 m / 110 m (361'/361') Note 1) Indoor unit (361'/361') 40 m(131') H2 ≤ 40 m(131') Indoor unit ~ or less Maximum Indoor unit allowable But, when AM✴✴✴HNQDC✴ is installed, H2 is 15 m(49') or less. Pipe length height Indoor unit ~...
- Page 50 Refrigerant pipe installation Installing the branch joints Branch joints must be installed ‘horizontally’ or ‘vertically’ . Horizontal installation Vertical installation • For A~J type branch joints : Connect the branch joint to the connection pipe with the provided reducer. NOTE •...
- Page 51 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> <Liquid side>...
- Page 52 Refrigerant pipe installation 3. Install the distribution header horizontally. Install the distribution header horizontally so that its ports does 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 53 ❋ Use the attached reducer according to the selected pipe size. To other outdoor unit Pipe To other outdoor joint or outdoor unit Reducer Reducer Pipe To other outdoor joint or Y-joint of the main pipe <Liquid side> ❋ Use the attached reducer according to the selected pipe size. To other outdoor unit Pipe To other outdoor joint or outdoor unit...
- Page 54 Refrigerant pipe installation Installing the MCU MCU specification Model MCU-S6NEK2N MCU-S4NEK3N MCU-S2NEK2N MCU-S1NEK1N Exterior of MCU Number of connectable Up to 8 units Up to 8 units Up to 8 units Up to 8 units indoor units at one port The maximum capacity of the 16 kW (54MBH)
- Page 55 Installing the indoor units Model MCU-S6NEK2N MCU-S4NEK3N MCU-S2NEK2N MCU-S1NEK1N Example installing (Each port connection) MCU series connection Example installing (MCU series connection) Under 16 kW (54MBH) kW indoor unit : Don’t use Y-connector This unit is only 16 kW (54MBH) ~ 28 kW (96MBH) indoor unit : Use Y-connector at the Gas & Liquid connectable for line one port under...
- Page 56 Refrigerant pipe installation How to connect the pipes 70 mm Protect with wet towel when welding 70 mm Pipe connection from outdoor unit Default installing direction. Low pressure gas pipe connection (welding) High pressure gas pipe connection (welding) Liquid pipe connection (welding) Pipe connection to indoor unit Liquid pipe (welding) Gas pipe (welding)
- Page 57 Installing the MCU MCU specification Model MCU-S6NEE1N MCU-S4NEE1N MCU-S4NEE2N MCU-S2NEK1N Exterior of MCU Up to 2 units ❋ Refer the detail Number of connectable Up to 6 units Up to 4 units Up to 2 units indoor units information of installation Maximum capacity of connectable indoor...
- Page 58 Refrigerant pipe installation How to connect the pipes 70mm (2.75 inch) Protect with wet towel when welding 70mm (2.75 inch) Pipe connection from outdoor unit Low pressure gas pipe conection (welding) High pressure gas pipe connection (welding) Liquid pipe connection (Flare) Pipe connection to indoor unit Liquid pipe (Flare) Gas pipe (Flare)
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Page 59: Electrical Wiring Work
Electrical wiring work Specification of the circuit breaker and power cable Electric Characteristics 1. Heat Pump/Heat Recovery (208~230V) (AM✴✴✴F✴, AM✴✴✴H✴, AM✴✴✴J✴ Series) Module1 Module2 Units Power Supply Power Supply Nom.Ton Model Volts Comp1 Comp2 FAN1 FAN2 MOP Comp1 Comp2 FAN1 FAN2 6TON AM072✴XVAF✴... -
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Electrical wiring work 2. Heat Pump/Heat Recovery (460V) (AM✴✴✴F✴, AM✴✴✴H✴, AM✴✴✴J✴ Series) Module1 Module2 Units Power Supply Power Supply Nom.Ton Model Volts Comp1 Comp2 FAN1 FAN2 MOP Comp1 Comp2 FAN1 FAN2 6TON AM072✴XVAJ✴ 60 16.4 20.0 8TON AM096✴XVAJ✴ 60 11.5 19.0 25.0 10TON... -
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3. Heat Pump/Heat Recovery (220V) ( AM✴✴✴K✴ Series) Module1 Module2 Units Power Supply Power Supply Nom.Ton Model Volts Comp1 Comp2 FAN1 FAN2 MOP Comp1 Comp2 FAN1 FAN2 6TON 208/230 19.5 19.5 50.0 60.0 AM072✴XVTF✴ 8TON 208/230 28.4 28.4 70.0 80.0 AM096✴XVTF✴... -
Page 62: Am168
Electrical wiring work 4. Heat Pump/Heat Recovery (460V) ( AM✴✴✴K✴ Series) Module1 Module2 Units Power Supply Power Supply Nom.Ton Model Volts Comp1 Comp2 FAN1 FAN2 MOP Comp1 Comp2 FAN1 FAN2 6TON 11.1 11.1 28.0 35.0 AM072✴XVTJ✴ 8TON 15.5 15.5 38.0 45.0 AM096✴XVTJ✴... - Page 63 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. •...
- Page 64 Electrical wiring work Specification of the protection tube Name Temper grade Applicable conditions When the protection tube is installed indoor and not exposed Flexible PVC conduit to outside, because it is embedded in concrete structure When the protection tube is installed indoor but exposed to Class 1 flexible conduit Galvanized steel sheet outside so there are risk of damage to the protection tube...
- Page 65 Power wiring diagram 3 phase 3wires 208-230V [AM✴✴✴✴XV✴F✴] 3 phase 3wires 460V [AM✴✴✴✴XV✴J✴] MCCB+ MCCB+ MCCB+ ELCB ELCB ELCB Main unit Sub unit 1 Sub unit 2 Main unit Sub unit Single phase 2 Communication wires 208-230V cable (Outdoor unit ~ Outdoor unit) MCCB + Communication...
- Page 66 Electrical wiring work 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 Nominal dimensions for 4/6 (0.006/0.009) 10 (0.01) 16 (0.02) 25 (0.03)
- Page 67 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 68 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 69 Fixing the power cable 3 phase 3wires 208-230V [AM✴✴✴✴XV✴F✴] 3 phase 3wires 460V [AM✴✴✴✴XV✴J✴] ELCB MCCB+ Sub unit communication cable • Does not apply : Large B type (AM216KXVGJ✴) model Sub unit communication cable • Do not let the power cable come into contact with the pipes inside the outdoor unit. If the power supply cable touches the pipes, the vibration of the compressor is transferred to the pipes and can damage the power supply CAUTION cables or pipes, creating the danger of fire or explosion.
- Page 70 Electrical wiring work Fixing the ground cable Connect the ground cable to the grounding hole inside the power supply box. Grounding Withdrawing the power cable Withdrawing from the front side - Connect the power cable protection tube into the power supply box as shown picture.
- Page 71 Installing the Solution device When the number of indoor units installed with the outdoor unit is 16 or less Terminal block with indoor unit Terminal block with outdoor unit sub module Terminal block with solution device...
- Page 72 Electrical wiring work Connecting the MCU Example 1 Indoor unit Indoor unit Outdoor MCCB unit 208-230 V~ Example 2 Indoor unit Indoor unit Indoor unit Outdoor 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) •...
- Page 73 Connecting the MCU (MCU-S6NEK2N, MCU-S4NEK3N, MCU-S2NEK2N, MCU-S1NEK1N) Example MCCB Indoor unit Indoor unit Outdoor unit MCCB 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) •...
- Page 74 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 150V Voltage to ground is over 150V...
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Page 75: 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. Manifold gage Manifold gage High pressure... - Page 76 Air tightness test and vacuum drying 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 -100.7kPa (5 Torr). Use the vacuum pump with the check valve to prevent pump oil from flowing backward while the vacuum pump is stopped.
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Page 77: 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 78 Pipe insulation 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 79 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 80 Pipe insulation 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.
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Page 81: Charging Additional Refrigerant
Charging additional refrigerant R-410A refrigerant is blended refrigerant. Add refrigerant in liquid form only. (Make sure to use the refrigerant bomb in upright position) Measure the quantity of the refrigerant according to the length of the liquid side pipe. Add fixed quantity of the refrigerant using a scale. - Page 82 Charging additional refrigerant Module 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.
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Page 83: 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 Number of communicated While setting communication units between indoor and outdoor unit Number of connected indoor units... - Page 84 Setting outdoor unit option switch and key function Setting outdoor unit option switches : B TYPE Setting outdoor install option Step Button Display Description Note Start Outdoor unit address Outdoor unit Step1 Setting required display Outdoor unit address Press (K1+K2) 00: Main unit for 2 seconds Unit address...
- Page 85 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. (If you have set the 'Emergency operation for compressor malfunction' , 1 or 2 will be displayed on Seg 4.) - Seg 1 and Seg 2 will display the number for selected option.
- Page 86 Setting outdoor unit option switch and key function Optional item Input unit SEG1 SEG2 SEG3 SEG4 Function of the option Remarks 7-9 (Factory default in case of A type PBA) 5-7 (Factory default in case of Targeted evaporation B type PBA) temperature [°C].
- Page 87 Optional item Input unit SEG1 SEG2 SEG3 SEG4 Function of the option Remarks Enables the silent mode for Disabled (Factory default) night-time in cooling mode LEVEL 1 / Auto (It operates automatically LEVEL 2 / Auto depending on the temperature.) LEVEL 3 / Auto However, if the external contact Silent mode...
- Page 88 Setting outdoor unit option switch and key function Optional item Input unit SEG1 SEG2 SEG3 SEG4 Function of the option Remarks Snow During snow accumulation, the Enabled (Factory default) accumulation Main fan may spin even when the Disabled prevention control unit is not in operation Unused option Main...
- Page 89 K1 (Number of KEY operation Display on segment press) 1 time Refrigerant charging in Heating mode “K” “1” “BLANK” “BLANK” 2 times Trial operation in Heating mode “K” “2” “BLANK” “BLANK” 3 times Pump out in Heating mode (Outdoor unit address 1) “K”...
- Page 90 Setting outdoor unit option switch and key function • After installing the product, be sure to perform leak tests on the piping connections. After pumping down refrigerant to inspect or relocate the outdoor unit, be sure to stop the compressor and then remove the CAUTION connected pipes.
- Page 91 < A type > < B type > Display on segment K4 (Number of KEY operation press) SEG 1 SEG2, 3, 4 1 time Outdoor unit model (a) Capacity Off, 1, 4 2 times Order frequency of the compressor 1 120 Hz 1, 2, 0 3 times...
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Page 92: Am168
Setting outdoor unit option switch and key function Display on segment K4 (Number of KEY operation press) SEG 1 SEG2, 3, 4 25 times Current frequency (Compressor 1) 120 Hz 1,2,0 26 times Current frequency (Compressor 2) 120 Hz 1,2,0 27 times Suction 2 temperature -42 °C... -
Page 93: Setting The Mcu And Pipe Addresses (For Hr Only)
Setting the MCU and Pipe Addresses (for HR Only) You can set the MCU address, the MCU ports to use, and the address for each MCU port connected to each indoor unit. ✴ It is for 2nd-generation MCU only. (MCU-S NEK2N,MCU-S4NEK3N,MCU-S1NEK1N) Setting the MCU address and the MCU ports to use You can set the MCU address and the MCU ports on the MCU PBA. - Page 94 Setting the MCU and Pipe Addresses (for HR Only) 4. Set the address of each MCU port that is connected to an indoor unit by taking the procedures in Setting the Pipe Addresses Manually or Setting the Pipe Addresses Automatically. (Auto pipe pairing operation) •...
- Page 95 Setting by using S-NET Pro 2 Set the pipe addresses by using Add-on > Change address on S-NET Pro 2. (For more information, see the S-NET Pro 2 Help.) Setting the Pipe Addresses Automatically (Auto pipe pairing operation) You can use the Automatic pipe-address setting operation to automatically set the address of each MCU port that is connected to an indoor unit.
- Page 96 Setting the MCU and Pipe Addresses (for HR Only) To run the Auto pipe pairing operation, take the following steps: 1. Press the K2 button 13 times on the main PBA of the outdoor unit to start the Auto pipe pairing operation. (Display : 24°C (75°F) ≤...
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Page 97: Things To Check After Completing The Installation
Things to check after completing the installation ✴ ✴ 1. Before supplying the power, use DC 500V (AM✴✴✴✴XV J✴) or DC 600 V (AM✴✴✴✴XV F✴) insulation resistance tester to measure the power (3 phase: R, S, T) terminal and the outdoor unit grounding. - Measurement should be over 30MΩ. - Page 98 Things to check after completing the installation • Are the power cable and communication cable tightened firmly on the terminal board within the range of rated tightening torque? • Have you checked for cross-connection of the power and communication cables? •...
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Page 99: Inspection And Trial Operation
Inspection and trial operation Precautions before test operation • When the outdoor temperature is low, turn on the main power 6 hours before beginning the operation. CAUTION - If you start the operation immediately after turning on the main power, it may cause serious damage to the part within the product. - Page 100 Inspection and trial operation 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.
- Page 101 Measure to take when E503 error occurs (When "inspection required" sign is appeared on result report of S-NET pro2) Is the ball valve on the outdoor unit Take corrective measures. opened? Has the correct amount of additional Take corrective measures. refrigerant been injected into the indoor unit and liquid line? Perform Trial Operation (cooling/heating)
- Page 102 Inspection and trial operation ❋ Symptoms for abnormal operation of the 4way valve - Abnormal noise during compressor operation, Increase in the suction temperature. ❋ Symptoms for abnormal operation of the Main EEV - It is not possible to control the superheat (SH) - It is not possible to secure a DSH of higher than 20K ❋...
- Page 103 Measure to take when E505, E506 error occurs Keep all the outdoor units in vacuum mode for 5 min. - See the instructions on Key operation modes. Is the deviation between pressure sensors on outdoor units greater than 0.2MPa? Is the ball valve (service valve) on each Open the valve.
- Page 104 Inspection and trial operation ❋ For more information, see the troubleshooting in the service manual. • When the auto trial operation for pressure sensor was executed before the pressure of the outdoor unit is equalized (when there's close to no difference between high and low pressure), error may occur even though CAUTION the product is normal.
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Page 105: Automatic Refrigerant Amount Detection Function
Automatic refrigerant amount detection function This function detects amount of refrigerant in the system through refrigerant amount detection operation Start times Input S-CHECKER signal Press the Tact switch "K2" 5 Satisfy the temperature condition Satisfy the temperature condition Check the amount of refrig er Check the amount of refrig er Check stability Check stability... - Page 106 Automatic refrigerant amount detection function • If the temperature is out of the guaranteed range below, exact result will not be obtained. - Indoor: 20~32 °C (68~89.6 °F) CAUTION - Outdoor: 5~43 °C (41~109.4°F) • If the operation cycle is not stable, the operation of refrigerant amount check may be forcibly finished. •...
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