Related Manuals for Hitachi RAS-8FSXNS2E
Summary of Contents for Hitachi RAS-8FSXNS2E
- Page 1 – INSTALLATION & OPERATION MANUAL – SET FREE SERIES Heat pump system Heat recovery system MODELS RAS-(8-96)FSXNS2E - air365 Max RAS-(5-54)FSXNP2E - air365 Max Pro PMML0628 rev.0 - 05/2023...
- Page 3 The English version is the original one; other languages are translated from English. Should any discrepancy occur between the English and the translated versions, the English version shall prevail. La versión en inglés es la original, y las versiones en otros idiomas son traducciones de la inglesa. En caso de discrepancias entre la versión inglesa y las versiones traducidas, prevalecerá...
- Page 4 Originální verze tohoto dokumentu je v angličtině; ostatní jazykové varianty jsou z angličtiny přeložené. Pokud mezi anglickou a jakoukoli jinou jazykovou verzí dojde k rozporu, bude převažovat anglická verze. Az eredeti változat az angol; az egyéb nyelvű változatok angolról lettek fordítva. Amennyiben az angol és a fordított verziók között bármilyen eltérés mutatkozik, az angol nyelvű...
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Page 5: Table Of Contents
Contents General Information .....................1 Name of parts .......................8 Piping work and refrigerant charge ..............12 Drain piping ......................47 Electric wiring .....................51 Commissioning ....................59 PMML0628 rev.0 - 05/2023... - Page 6 General Index 1. General Information ....................1 1.1 General notes ....................2 1.2 Applied symbols....................2 1.3 Product guide ....................3 1.4 Product list ......................4 1.5 Combination of base units ................5 1.5.1 Base units ....................5 1.5.2 Build up capacity combination ..............5 1.5.3 Units combination ...................5 2. Name of parts ......................8 2.1 Cabinet size S .....................9 2.2 Cabinet size M ....................10...
- Page 7 3.5 Air-Tight Test ....................41 3.5.1 Tightening check of stop valves ............41 3.5.2 Air-tight test method ................42 3.5.3 Insulation work ..................42 3.6 Vacuuming .......................43 3.6.1 Basic Method ..................43 3.6.2 Triple Evacuation Method ..............43 3.7 Charging work ....................44 3.7.1 Maximum permitted concentration of hydrofluorcarbon (HFC) refrigerant ....................45 4. Drain piping .......................47 4.1 Condensation drainage system ...............48...
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Page 8: General Information
General Information 1.1 General notes ....................2 1.2 Applied symbols....................2 1.3 Product guide ....................3 1.4 Product list ......................4 1.5 Combination of base units ................5 1.5.1 Base units ....................5 1.5.2 Build up capacity combination ..............5 1.5.3 Units combination ...................5 PMML0628 rev.0 - 05/2023... -
Page 9: General Notes
This document may therefore have been subject to amendments during the life of the product. Hitachi makes every effort to offer correct, up-to-date documentation. Despite this, printing errors cannot be controlled by Hitachi and are not its responsibility. -
Page 10: Product Guide
CAUTION • The text following this symbol contains information and instructions relating directly to your safety, in addition to hazards or unsafe practices which could result in minor personal injury or product or property damage. • Not taking these instructions into account could lead to minor injuries to you and others in the proximities of the unit. -
Page 11: Product List
1.4 Product list Heating operation Cooling operation air365 Max (Pro) Cabinet Type Model Power supply Picture size RAS-8FSXNS2E RAS-10FSXNS2E RAS-12FSXNS2E RAS-14FSXNS2E air365 Max RAS-16FSXNS2E 3N~ 400V 50Hz Heat Recovery (3 pipe system) Heat Pump (2 pipe system) RAS-18FSXNS2E RAS-20FSXNS2E RAS-22FSXNS2E... -
Page 12: Combination Of Base Units
1.5 Combination of base units 1.5.1 Base units ◆ air365 Max Model RAS-8FSXNS2E RAS-10FSXNS2E RAS-12FSXNS2E RAS-14FSXNS2E RAS-16FSXNS2E Model RAS-18FSXNS2E RAS-20FSXNS2E RAS-22FSXNS2E RAS-24FSXNS2E ◆ air365 Max Pro Model RAS-5FSXNP2E RAS-6FSXNP2E RAS-8FSXNP2E RAS-10FSXNP2E RAS-12FSXNP2E Model RAS-14FSXNP2E RAS-16FSXNP2E RAS-18FSXNP2E 1.5.2 Build up capacity combination... - Page 13 Model RAS-36FSXNS2E RAS-38FSXNS2E RAS-40FSXNS2E RAS-42FSXNS2E RAS-44FSXNS2E RAS-18FSXNS2E RAS-22FSXNS2E RAS-22FSXNS2E RAS-24FSXNS2E RAS-22FSXNS2E RAS-18FSXNS2E RAS-16FSXNS2E RAS-18FSXNS2E RAS-18FSXNS2E RAS-22FSXNS2E Combination Model RAS-46FSXNS2E RAS-48FSXNS2E RAS-50FSXNS2E RAS-52FSXNS2E RAS-54FSXNS2E RAS-24FSXNS2E RAS-24FSXNS2E RAS-18FSXNS2E RAS-18FSXNS2E RAS-18FSXNS2E RAS-22FSXNS2E RAS-24FSXNS2E RAS-18FSXNS2E RAS-18FSXNS2E RAS-18FSXNS2E Combination RAS-14FSXNS2E RAS-16FSXNS2E RAS-18FSXNS2E Model RAS-56FSXNS2E RAS-58FSXNS2E RAS-60FSXNS2E RAS-62FSXNS2E RAS-64FSXNS2E...
- Page 14 ◆ air365 Max Pro Model RAS-20FSXNP2E RAS-22FSXNP2E RAS-24FSXNP2E RAS-26FSXNP2E RAS-28FSXNP2E RAS-10FSXNP2E RAS-12FSXNP2E RAS-12FSXNP2E RAS-16FSXNP2E RAS-16FSXNP2E RAS-10FSXNP2E RAS-10FSXNP2E RAS-12FSXNP2E RAS-10FSXNP2E RAS-12FSXNP2E Combination Model RAS-30FSXNP2E RAS-32FSXNP2E RAS-34FSXNP2E RAS-36FSXNP2E RAS-38FSXNP2E RAS-18FSXNP2E RAS-18FSXNP2E RAS-18FSXNP2E RAS-18FSXNP2E RAS-14FSXNP2E RAS-12FSXNP2E RAS-14FSXNP2E RAS-16FSXNP2E RAS-18FSXNP2E RAS-12FSXNP2E Combination RAS-12FSXNP2E Model RAS-40FSXNP2E RAS-42FSXNP2E...
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Page 15: Name Of Parts
Name of parts 2.1 Cabinet size S .....................9 2.2 Cabinet size M ....................10 2.3 Cabinet size L ....................11 PMML0628 rev.0 - 05/2023... -
Page 16: Cabinet Size S
2.1 Cabinet size S Nº Part Name Nº Part Name 1 Compressor (inverter) 14 Check Joint (High) 2 Heat Exchanger 15 Check Joint (for Oil) 3 Propeller Fan 16 Electrical Box 4 Fan Motor 17 Low Pressure Sensor 5 Accumulator (Pressure Vessel) 18 High Pressure Sensor High Pressure Switch for Protection 6 Oil Separator (Not Pressure Vessel) -
Page 17: Cabinet Size M
2.2 Cabinet size M Nº Part Name Nº Part Name 1 Compressor (inverter) 14 Check Joint (High) 2 Heat Exchanger 15 Check Joint (for Oil) 3 Propeller Fan (2 pieces) 16 Electrical Box 4 Fan Motor (2 pieces) 17 Low Pressure Sensor 5 Accumulator (Pressure Vessel) 18 High Pressure Sensor High Pressure Switch for Protection... -
Page 18: Cabinet Size L
2.3 Cabinet size L Nº Part Name Nº Part Name 1 Compressor (inverter) 14 Check Joint (High) 2 Heat Exchanger 15 Check Joint (for Oil) 3 Propeller Fan (2 pieces) 16 Electrical Box 4 Fan Motor (2 pieces) 17 Low Pressure Sensor 5 Accumulator (Pressure Vessel) 18 High Pressure Sensor High Pressure Switch for Protection... -
Page 19: Piping Work And Refrigerant Charge
Piping work and refrigerant charge 3.1 Connection kit selection ..................13 3.2 Pipe size selection....................13 3.2.1 Size of pipes (Ø mm) ................14 3.2.2 Examples ....................24 3.3 Pipe connection ....................25 3.3.1 Precautions for the installation of the outdoor unit ......26 3.3.2 Piping direction ..................32 3.3.3 Piping connection ..................34 3.3.4 Stop valve ....................34 3.4 Connection scenarios ..................39 3.5 Air-Tight Test ....................41... -
Page 20: Connection Kit Selection
3.1 Connection kit selection CAUTION When brazing pipes, always protect the surrounding elements of the working area in order to avoid damage due to the high temperature of the flame. The optional piping connection kit is required for the combination unit. Number of Operation mode Outdoor unit... -
Page 21: Size Of Pipes (Ø Mm)
• The copper pipe for refrigeration installations is especially treated for outdoors and indoors. The interior surface finish makes it easier for the refrigerant to circulate and withstands the action of the lubricant oil applied to outdoor equipment. Always use clean copper pipes with no signs of knocks or cracks. Make sure there is no dust or dampness on the inside. - Page 22 Combination of 4 units Upstream Side Outdoor Outdoor Outdoor Outdoor Unit Unit Unit Unit Piping Piping Connection Kit 2 Connection Kit 1 Piping Connection Kit 3 First Branch Indoor Indoor Indoor Unit Unit Unit Indoor Indoor Indoor Unit Unit Unit L: Keep the straight line distance of 500mm or more after the piping connection kit.
- Page 23 Ⓓ Header branch Total indoor unit HP Number of header branches Model MH-84AN1 5-10 MH-108AN ③ Diameter of the main pipe (from the base of the unit or connection kit 1 to the first branch). Equivalent pipe length < 100 m Outdoor unit (HP) Gas (Ø) Liquid (Ø)
- Page 24 Total indoor unit capacity after Gas (Ø) Liquid (Ø) the first branch (HP) (68-73.99) 44.45 22.20 (74-89.99) 50.80 22.20 ≥ 90 50.80 25.40 NOTE • In the case that the piping length from the Multi-Kit at the first branch to the terminal indoor unit is over 40m, the size of the main piping should be increased by one size with reducers (field- supplied).
- Page 25 ◆ For heat recovery systems (3 pipes) For selecting the pipe sizes between the outdoor unit and the piping connection kit 1, between the piping connection kits 2 and for piping connection kit Ⓐ, refer to the print version of the manual. Combination of 2 and 3 units Upstream Side Outdoor...
- Page 26 ⑤ Low Pressure Gas Pipe Three Pipes Portion Ⓗ NOTE ⑤ High/Low Pressure Gas Pipe CH-Box (single branch type) is not ⑥⑦ Liquid Pipe connected to liquid pipe. ⑥⑦ Gas Pipe Two Pipes Portion ⑤ High/Low Pressure Gas Pipe Three Pipes Portion Ⓘ...
- Page 27 Allowables Piping Item Mark Length (m) Total Piping Length between CH-Box and Each Indoor Unit e+f+g+h+i ≤40 Piping Length between Piping Connection Kit 1 and Each Outdoor Unit La, Lb, Lc, Ld ≤25 O.U. is Higher ≤50 Height Difference between Outdoor Units and Indoor Units O.U.
- Page 28 CAUTION Header branch cannot be connected to upstream or downstream piping of CH-Box multiple. CH-M Multi-Kit Multi-Kit Multi-Kit Indoor Indoor Unit Unit Multi-Kit Indoor Indoor Unit Unit Ⓑ First branch Outdoor unit HP Model E-52XN3 6-10 E-102XN3 12-16 E-162XN3 18/20 E-202XN3 22/24 E-242XN3...
- Page 29 Ⓕ Header branch for 2 pipes section Total indoor unit HP Number of header branches Model MH-84AN1 5-10 MH-108AN ③ Diameter of the main pipe (from the base of the unit or connection kit 1 to the first branch) Outdoor unit (HP) Gas, low pressure (Ø) Gas, high/low pressure (Ø) Liquid (Ø)
- Page 30 NOTE Even if the equivalent refrigerant piping length is more than 100m, no need to increase the pipe size after first branch. If the multi-kit size is larger than the first branch,adjust the multi-kit size to the first branch. In case that the selected pipe size after the first branch is larger than the pipe size before the first branch, use the same pipe size as before the branch.
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Page 31: Examples
Ⓖ CH-Box Available combination of indoor unit Number of connectable capacity (HP) Type CH-Box Model Branch indoor unit per branch per CH-Box per Branch CH-AP160SSX 1 - 7 ≤6.0 Single CH-AP280SSX 1 - 8 10.0 ≤10.0 CH-AP04MSSX 1 - 6 16.0 ≤6.0 / 1x8.0HP / 1x10.0HP CH-AP08MSSX... -
Page 32: Pipe Connection
◆ Example 2: Using piping connection kit Outdoor Outdoor Unit Unit Piping Connection Kit Indoor Indoor Unit Unit First Branch Multi-Kit 3.3 Pipe connection Cover the end of the pipe appropriately when needs to be inserted through holes in walls and roofs, etc. -
Page 33: Precautions For The Installation Of The Outdoor Unit
3.3.1 Precautions for the installation of the outdoor unit When the installation and piping work for the multiple outdoor units is performed, it is required the arrangement for outdoor units and piping length. Perform securely the installation work according to the following restrictions. If the arrangement for outdoor units is incorrect, it may cause flowback of the refrigerant and result in failure of outdoor unit. - Page 34 3 For maintenance, attach "Main unit label" to the service cover (back side surface) of the outdoor unit "A". > > > > < < > > < < < < Outdoor Outdoor Outdoor Outdoor Outdoor Outdoor Outdoor Outdoor Unit A Unit B Unit C Unit D...
- Page 35 Upstream side Keep the straight-line The height difference distance of 500mm or between outdoor units Outdoor Outdoor Outdoor more for piping after the must be 2.0m or less. Unit A Unit B Unit C piping connection kit. Indoor unit side Piping connection kit 1 Piping connection kit 2 : If it exceeds 100mm, follow step 7.
- Page 36 CORRECT CORRECT Indoor unit Indoor unit side side INCORRECT INCORRECT Indoor unit Indoor unit side side The refrigerant oil is stagnated to the unit stopped The refrigerant oil is stagnated to the unit stopped CORRECT CORRECT ⓐ ⓐ ⓐ ⓐ ⓐ...
- Page 37 4 Place the outdoor unit pipe horizontally or with the pipe slanted downward towards the indoor unit side so that accumulation of refrigerant oil may not occur in the pipe. INCORRECT INCORRECT Indoor unit side Indoor unit side Refrigerant oil Refrigerant oil accumulates in the pipe accumulates in the pipe...
- Page 38 NOTE The refrigerant system may be damaged if the slope of the piping connection kit exceeds +15° . 7 When the height difference between the outdoor units exceeds 100mm, there are restrictions depending on the number of connected outdoor units. Incorrect positioning of the outdoor units may cause failure of outdoor units due to flowing back of the refrigerant.
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Page 39: Piping Direction
3.3.2 Piping direction Fix the pipes adequately in order to avoid vibration and excessive force to the valve. 1 The pipes can be installed in four directions (front, rear, right or bottom side) from the bottom base. For vibration protection, properly fix the piping connection and check that no excessive force is applied to the stop valve. - Page 40 • For piping from front or rear side piping cover Cover gaps with packings (field-supplied). Install accessory rubber bushes to the wiring outlets. Piping cover Communication wiring Power source wiring Gas pipe Liquid pipe ◆ Heat recovery • For pipng from bottom base Liquid pipe Communication High/Low Pressure Gas pipe...
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Page 41: Piping Connection
3.3.3 Piping connection After connecting the pipes, remove the caps of stop valves for gas and liquid. Tighten the open-close spindle in the closing direction according to the following tightening torque. 1 Make sure that the stop valves are closed. 2 Fill pipes with nitrogen gas before brazing. 3 Protect the compressor and sound-proof cover with a metal plate when brazing the gas pipe. - Page 42 ◆ Gas valve 1 Make sure that all the spindles are closed completely. 2 Connect the charging hose to the service port and release the gas inside the piping from the high/low and low pressure gas pipes. 3 Cut the end of the closing pipes and check that no gas exists inside the high/low and low pressure gas pipes.
- Page 43 CAUTION • Ensure that there is no gas inside the pipe when removing the closing pipe. Otherwise, the pipe may be blown out and it may lead to injury. • Protect the return oil pipe and vibration proof of the compressor with a metal plate when using a burner.
- Page 44 ◆ Details of stop valves Gas valve Liquid valve (Check the shape) Check joint for service port Only the charging hose can be connected. Refrigerant O-ring Hexagonal wrench pressure To open or close Hexagonal wrench Check joint for spindle valve To open or close service port spindle valve...
- Page 45 • Special care should be taken to ensure that the flame from the blow torch does not fall on the body of the stop valve, on the compressor and cover or on the insulation bushings; insert a metal plate in front of the oil return pipe. •...
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Page 46: Connection Scenarios
3.4 Connection scenarios 2 pipes system Stop Valve (Liquid) Stop Valve (Gas Stop Valve (Gas Stop Valve (Liquid) High/Low pressure) High/Low pressure) Flaring Flaring 90° Elbow 90° Elbow Liquid pipe Liquid pipe (field-supplied) (field-supplied) (field-supplied) (field-supplied) Gas pipe Accessory pipe (field-supplied) Stop Valve (Liquid) Stop Valve (Gas... - Page 47 2 pipes system 3 pipes system Gas Ø Model Gas Ø High / Low Liquid Ø Liquid Ø High / Low Low pressure pressure ID22.2 ID22.2 ID22.2 RAS-8FSXNS2E →OD19.05 →OD19.05 →OD15.88 ID22.2 RAS-10FSXNS2E →OD19.05 ID22.2 OD9.52 RAS-12FSXNS2E →OD25.4 →OD12.7 ID22.2 RAS-14FSXNS2E →OD25.4...
- Page 48 ◆ air365 Max Pro scenarios 2 pipes system 3 pipes system Gas Ø Model Gas Ø High / Low Liquid Ø Liquid Ø High / Low Low pressure pressure ID22.2 ID22.2 ID22.2 RAS-5FSXNP2E →OD15.88 →OD15.88 →OD12.7 ID22.2 ID22.2 ID22.2 RAS-6FSXNP2E →OD19.05 →OD19.05...
- Page 49 5 Tighten securely the caps according to the following tightening torque after each spindle valve is opened. Access Port Stop valve (Only the charging hose for R410A Do NOT put two wrenches here. for gas can be connected) Stop valve Hexagonal wrench for liquid pipe (To open or close...
- Page 50 DANGER Be sure to use Nitrogen Gas for air-tight test. If other gases such as oxygen gas, acetylene gas or fluorocarbon gas are accidentally used, it may cause an explosion or gas intoxication. 3.5.3 Insulation work 1 Securely insulate high/low pressure and low pressure (for heat recovery system only) gas piping side and liquid piping side individually.
- Page 51 3.6.2 Triple Evacuation Method According to the following [Step 1] [Step 2] [Step 3] in order, conduct vacuum drying work. Step 1 1 Vacuum until the pressure reaches 2000 microns (2.0 mmHg). 2 Pressurize with nitrogen up to 0.3 MPaG (50 PSIG) for 15 minutes. 3 Release pressure until reaching the atmosphere level, as low as 0.03 MPaG (5 PSIG).
- Page 52 charge refrigerant from the check joint of liquid stop valve. Insulate the liquid piping and gas piping completely to avoid decreasing of performance and dewing on the surface of the pipe. Insulate the flare nut and union of the piping connection with insulation. Check to ensure that there is no gas leakage.
- Page 53 The R410A refrigerant gas, used in the equipment, is fireproof and not toxic. The maximum permitted concentration of HFC R410A gas in the air is 0.44 kg/m3, in accordance with standard EN378-1. Therefore, efficient measures should be adopted to ensure the concentration of R410A gas in the air is kept below 0.44 kg/m3 in the event of a leak.
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Page 54: Drain Piping
Drain piping 4.1 Condensation drainage system ...............48 4.2 Installation position of the optional drainage kit DBS-TP10A ......49 4.2.1 Drain kit components ................49 4.2.2 Quantity ....................50 PMML0628 rev.0 - 05/2023... - Page 55 4.1 Condensation drainage system When the outdoor unit operates in heating mode, there is a build-up of condensation of the ambient humidity which, together with rain water, requires draining. Select a location for the unit which permits adequate drainage. If necessary, mount an installation suitable for the drainage of condensation.
- Page 56 4.2 Installation position of the optional drainage kit DBS-TP10A Installation position (example: RAS-10FSXNP2E, lower and side views). Drain pipe Drain pipes (field-supplied) Optional drain plug Base of unit 4.2.1 Drain kit components Model Description Material/colour Application Connecting for Drain Drain boss PP/black Piping Embolization for...
- Page 57 4.2.2 Quantity Model air365 Max air365 Max Pro 8-18 5-14 20-36 16-24 38-40 26-32 42-48 34/36 50-54 38-42 56-60 44/46 DBS-TP10A 62-66 48/50 68-72 52/54 74-78 80-84 86-90 92-96 PMML0628 rev.0 - 05/2023...
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Page 58: Electric Wiring
Electric wiring 5.1 General information ..................52 5.2 General verifications ..................52 5.3 Setting of the DSW switches on PCB1 .............53 PMML0628 rev.0 - 05/2023... - Page 59 5.1 General information CAUTION • Before any work to the electrical wiring or regular inspections, switch off the mains power supply of the indoor and outdoor units. Wait three minutes before starting installation or maintenance work. • Make sure that the interior and exterior fans have come to a complete standstill before starting work on the electrical wiring or regular inspections.
- Page 60 ✓ When the supply cables of the major consumers and the refrigeration/heating system are very close together.In these cases, induction in the wiring to the refrigeration/heating system may arise due to a rapid change in the electricity consumption of the above consumers and their start-up.
- Page 61 • It may take up to 20 seconds for the change of operation state (RUN/STOP) to be effective after having set DSW4. • The symbol “” indicates the position of the DIP switches. The figures show the position of the DIP switch once the position setting has been completed.
- Page 62 ◆ DSW3 Setting not required Setting before shipment NOTE Do not change DSW3 setting. Otherwise, it 1 2 3 4 may cause abnormal operation. High Heating Mode NOTE High Heating mode is only configurable for air365 Max Pro units. 1 2 3 4 CAUTION Use the specific cable sizes and main breaker...
- Page 63 Low ambient temperature Set the No. 4 pin to ON side CAUTION When setting low ambient temperature at cooling operation, make sure to attach the snow protection hood to the outdoor unit. 1 2 3 4 ◆ DSW7: Unit model setting ...
- Page 64 DSW10 setting example Set the end terminal DSW10 DSW10 DSW10 air365 Max (Pro) outdoor unit combination Unit A Unit B Unit C (Main) (Sub) (Sub) Cancel the end terminal setting Transmission line (no polarity) H-LINK or H-LINK II Indoor unit In the case of more than one refrigerant cycles in the same H-LINK or H-LINK II, set all No.
- Page 65 ◆ DSW101 (INV1, 2): INV unit setting/Service Setting not required Setting before shipment Cancellation of current detection INV1 INV2 INV1 INV2 1 2 3 1 2 3 1 2 3 1 2 3 NOTE If cancellation of current detection is set, make sure to return the setting, after service works. PMML0628 rev.0 - 05/2023...
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Page 66: Commissioning
Commissioning 6.1 Preliminary checks ...................60 6.2 Carry out the Test Run ..................61 PMML0628 rev.0 - 05/2023... - Page 67 6.1 Preliminary checks The test run must be carried out according to the instructions given in chapter "6.2 Carry out the Test Run". DANGER Do not use the system until all of the check points have been verified. As with the test run for the indoor unit, check the Installation and maintenance manual for the indoor unit and the CH-Box.
- Page 68 CAUTION Where the total insulation resistance of the unit is below 1 MΩ, the compressor insulation resistance may be low due to the refrigerant held in the compressor. This may occur if the unit is not used for long periods. 1 Disconnect the compressor cables and measure the insulation resistance of the compressor.
- Page 70 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. Ronda Shimizu, 1 - Políg. Ind. Can Torrella 08233 Vacarisses (Barcelona) Spain © Copyright 2023 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. – All rights reserved. PMML0628 rev.0 - 05/2023 Printed in Spain...