GIA V4+R GIA2528WD2RN1TC Installation Manual
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GIA V4+R GIA2528WD2RN1TC Installation Manual

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INSTALLATION MANUAL
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V4+R
| x2 | x3 | x4
GIA2528WD2RN1TC | GIA28010WD2RN1TC | GIA33512WD2RN1TC
GIA40014WD2RN1TC | GIA45016WD2RN1TC
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Summary of Contents for GIA V4+R GIA2528WD2RN1TC

  • Page 1 INSTALLATION MANUAL V4+R | x2 | x3 | x4 GIA2528WD2RN1TC | GIA28010WD2RN1TC | GIA33512WD2RN1TC GIA40014WD2RN1TC | GIA45016WD2RN1TC Thanks for choossing our product. Please, read carefully this manual before using the product...

  • Page 2: Table Of Contents

    MCAC-VTSM-2011-09 Installation Installation Installation Introduction ..........56 Units Installation ............70 ..........70 2.1 Installation of Indoor Unit ..........70 2.2 Installation of Outdoor Unit ........... 2.3. Installation of MS equipment Refrigerant Pipe Engineering ........77 ..........77 3.1 Refrigerant Pipe Processing ..............

  • Page 3: Installation Introduction

    MCAC-VTSM-2011-09 Installation 1. Installation Introduction 1.1 Select the Refrigerant Piping for V4+ Three pipe Heat Recovery modular type 1.1.1 Length and drop height permitted of the refrigerant piping Outdoor unit (one or more outdoor units) (71) Indoor unit Ⅰ (71) The first line branch pipe (140) (28)
  • Page 4 MCAC-VTSM-2011-09 Installation 1.1.2 Select the refrigerant piping (10) (71) Ⅰ (71) (140) (28) (140) (71) Ⅱ (71) Ⅲ Ⅳ (56) (28) (56) Note: In the above drawing, the capacity unit of indoor side is (×100W), and the outdoor side is HP. The Pipe Type The Detailed Pipe Place Code...
  • Page 5 Φ19.1mm Φ12.7mm 1.1.2.4 Selection of MS: A (×100W) MS Box Model GIA-MS02/N1-A A＜56 GIA-MS04/N1-A A≥56 1.1.2.5 Selection of the Outdoor branch (L, M) and the outdoor unit pipe (g1, g2, g3, G1) E.g. The branch (L, M) and outdoor unit pipe (g1, g2, g3, G1) in the above drawing.
  • Page 6 MCAC-VTSM-2011-09 Installation Φ25.4/Φ19.1/Φ12.7; g1,g2： L： 16HP: Φ31.8/Φ28.6/Φ15.9; FQZHW-02N1S 18-20HP: Φ31.8/Φ28.6/Φ19.1. g1,g2,g3： 24HP: Φ34.9Φ28.6/Φ19.1; 26-30HP: Φ38.1Φ31.8/Φ22.2 FQZHW-03N1S G1: Φ38.1/Φ28.6/Φ19.1 Notice: All branches must be purchased from Midea. 1.1.3 Pipe selection example Please See above Drawing same as 1.1.2, suppose total equivalent pipe length beyond 90m. 1.1.3.1 Select each indoor unit pipe according to the following table When indoor unit pipe length≤10m When indoor unit pipe length>10m...
  • Page 7 Ф15.9/Ф9.5 N10=56 ---- A≥56 Ф12.7/Ф6.4 N8=28 A≤45 ---- 1.1.3.4 Select the MS equipment refer table 4.5 MS equipment Total capacity of indoor units (×100W) Range MS model GIA-MS04/N1-A N1+N2=142 A≥56 GIA-MS04/N1-A N3=140 A≥56 GIA-MS02/N1-A N4=28 A≤45 GIA-MS04/N1-A N5=140 A≥56 GIA-MS04/N1-A N6+N7=142 A≥56...
  • Page 8 MCAC-VTSM-2011-09 Installation FQZHN01S FQZHN02S FQZHN03S FQZHN04S 1.1.4.2 Outdoor branch drawing branch FQZHW02N1S FQZHW03N1S model ID:19.1 ID:19.1 ID:25.4 0D:25.4 ID:25.4 Discharge 0D:25.4 Gas side ID:22.2 ID:19.1 joint ID:22.2 ID:19.1 0D:31.8 ID:31.8 ID:38.1 0D:31.8 ID:31.8 ID:25.4 ID:34.9 0D:34.9 ID:41.3 ID:25.4 0D:34.9 Suction gas side joint ID:38.1 ID:38.1...
  • Page 9 MCAC-VTSM-2011-09 Installation ID:6.4 Oil-Balance pipe 1.1.4.3 Branch pipe drawing after MS Name Gas side joints Liquid side joints FQZHN01C 1.3 Installation Procedure 1.3.1 Importance of the Installation Operation Effect of installation issues on equipment: Leakage of refrigerant pipe Insufficient refrigerant Over heated running Compressor fault Filth blockage of refrigerant pipe...
  • Page 10 MCAC-VTSM-2011-09 Installation 1.3.2 General procedure ....... Pipe pre-install engineering Ensure that the water drainage pipe inclines downward Installing indoor unit Check the model to avoid incorrect installation ......Refrigerant piping engineering Keep the refrigerant pipes dry, clean and sealed ...... Water drainage piping engineering Downward inclination ........
  • Page 11 MCAC-VTSM-2011-09 Installation 1.3.2 Install indoor unit’s procedure Confirm installation position Label installation position Install hooks Install indoor units Note: 1. The hook must strong enough to sustain the weight of indoor unit. 2. Check the models of indoor units before installation. 3.
  • Page 12 MCAC-VTSM-2011-09 Installation attention not to destroy the waterproof of the roof. 1.3.9 Recharge refrigerant procedure Calculate the added volume according to liquid pipe length Recharge refrigerant Note: Please calculate the additional amount of refrigerant according to the formula that we supply to you, and the calculation result must be correct 1.3.10 Main points of test running and Commissioning Please check the following issues before turning on the power:...
  • Page 13 MCAC-VTSM-2011-09 Installation Before the engineering installation, read carefully the related drawings to understand the design intention, audit the drawings, and then work out a detailed engineering organization plan. 1. Make sure that the pipe diameters and branch pipe models meet the technical specifications. 2.
  • Page 14 MCAC-VTSM-2011-09 Installation Highlights: 1) When selecting the parts to be pre-installed, ensure that the weight of the accessories is also calculated. 2) In a situation where metal parts to be pre-installed is not allowed, use expansion bolts while ensuring sufficient load-bearing capacity. Caution: The above figure is for reference only.
  • Page 15 MCAC-VTSM-2011-09 Installation If control board cover is not fixed perfectly, it will cause heat-up at connection point of terminal, fire or electrical shock. (14) If the supply cord is damaged, it must be replaced by the manufacture or its service agent or similarly qualified person in order to avoid a hazard.
  • Page 16 MCAC-VTSM-2011-09 Installation regulation of National Electric Standard. Remark: Failure to observe a caution may result in injury or damage to the equipment. Unit Installation...

  • Page 17: Units Installation

    MCAC-VTSM-2011-09 Installation 2. Units Installation 2.I. Installation of Indoor Unit 2.1.1 Installation procedure Determine the installation position → Scribing and locating → Installing suspension road → Installing the indoor unit 2.1.2 Cautions for installation and check 1) Drawing check: Confirm the specification, model and installation direction of the set. 2) Height: Ensure that it closely fits the ceiling.
  • Page 18 MCAC-VTSM-2011-09 Installation 2. Ensure that the noise and exhaust ventilation of the outdoor unit do not affect the neighbors of the property owner or the surrounding ventilation. 3. Ensure that the outdoor unit is installed in a well-ventilated place that is possibly closest to the indoor unit.
  • Page 19 MCAC-VTSM-2011-09 Installation 3. Ensure that outdoor unit is well grounded. 4. Before commissioning, do not turn on the valves of the gas pipe and liquid pipe of the outdoor unit. 5. Ensure sufficient maintenance space is available at the installation site. 2.2.6.
  • Page 20 MCAC-VTSM-2011-09 Installation >1m Front Front 100-500mm 5) For limited space installation If miscellaneous articles are piled around the outdoor unit, such articles must be 800mm below the top of the outdoor unit. Otherwise, a mechanic exhaust device must be added. Front view Side view Front view...
  • Page 21 MCAC-VTSM-2011-09 Installation 2.2.7.1 Installation of GIA-2528WD1RN1TB and GIA-28010WD1RN1TB. Schedule 1: Schedule 2: Note: Before install the air deflector, please ensuring the mesh enclosure has been took off; otherwise the air supply efficiency would be block down. Unit Installation...
  • Page 22 MCAC-VTSM-2011-09 Installation Once mounting the shutter to the unit, air volume, cooling (heating) capacity and efficiency would be block down, this affection enhance along with the angle of the shutter. Thus, we are not recommend you to mount the shutter, if necessary in use, please adjust the angle of shutter no larger than 15° . Only one bending site is allowanced in the air duct, otherwise, device may be disoperation.

  • Page 23: Installation Of Ms Equipment

    4-way valve may cause uncomforted. 2.3.1 Notice for using MS and notes for related system 1. The max capacity of the indoor unit which connected with GIA-MS02N1A is 2 horsepower; The max capacity of the indoor unit which connected with GIA-MS04N1A is 5 horsepower.

  • Page 24: Refrigerant Pipe Engineering

    MCAC-VTSM-2011-09 Installation 3. Refrigerant Pipe Engineering 3.1. Refrigerant Pipe Processing 3.1.1Basic requirements 3.1.1.1. Operation procedure Determine the route and size of the pipeline according to the construction drawing  Make and installing bracket, hanger and support  Make and arrange pipe accessories  Recharge nitrogen gas for protection ...
  • Page 25 MCAC-VTSM-2011-09 Installation points should be selected according to the diameter of the air pipe. Since the temperature of the flowing refrigerant will change as the operation and working condition change, which will result in hot expansion and cold shrinkage of the refrigerant pipe, so the pipe with thermal insulation should not be clamped tightly, otherwise the copper pipe may get broken due to stress concentration.
  • Page 26 MCAC-VTSM-2011-09 Installation 7) To ensure even diversion of refrigerant, pay attention to the distance between the branch pipe subassembly and the horizontal straight pipe. a. Ensure that the distance between the bending point of copper pipe and the horizontal straight pipe section of the adjacent branch pipe is larger than or equal to 1m.
  • Page 27 MCAC-VTSM-2011-09 Installation ※ It is recommended to seal the openings of the pipe with both cover and adhesive tape. ● Method of sealing welding 2. Special attention: 1) When putting the copper pipe through the hole in the wall（dirt is easy to enter into the pipe）. 2) When the copper pipe goes outside the wall, ensure that no rain water can enter the pipe, particularly when the pipe is placed upright.
  • Page 28 MCAC-VTSM-2011-09 Installation 7) When conduct piping on a raining day, remember to seal the openings of the pipe first. 3.1.3 Processing of copper pipe 3.1.3.1. Pipe cutting 1. Tool Use a pipe cutter instead of a saw or cutting machine to cut the pipe. 2.
  • Page 29 MCAC-VTSM-2011-09 Installation 3.1.3.4. Opening bell-mouthed opening 1. Purpose: Flaring Bell-mouthed opening is used for screw thread connection. 2. Highlight: 1) Before performing the Bell-mouthed opening operation, perform fire annealing for the hard pipe. 2) Use pipe cutter to cut pipe to ensure even cross section and avoid refrigerant leakage; do not use a steel saw or metal cutting device to cut pipe, otherwise the cross section will get deformed and the copper chip will enter the pipe.
  • Page 30 MCAC-VTSM-2011-09 Installation 3/8" (9. 52) 12. 8~13. 2 1/2" (12. 7) 16. 2~16. 6 5/8" (15. 88) 19. 3~19. 7 3/4" (19. 05) 23. 6~24. 0 Cautions: a. Apply some refrigeration oil onto the inner surface and outer surface of the flaring opening, to facilitate the connection or rotation of the flaring nut, ensure close sticking between the sealing surface and the bearing surface, and avoid pipe bending.
  • Page 31 MCAC-VTSM-2011-09 Installation Outer Minimum Outer Minimum Outer Minimum Material Material Material Diameter Thickness Diameter Thickness Diameter Thickness Ф6. 35 Ф19. 0 Ф38. 0 0. 8 1. 0 1/2H 1. 5 Ф9. 52 Ф22. 0 Ф45. 0 0. 8 1/2H 1. 2 1/2H 1.
  • Page 32 MCAC-VTSM-2011-09 Installation brazing welding part copper pipe elbows assistant pipe assembly 5. Standard operation of Brazing Welding copper pipe 1/4" brazing weld part valve decompress valve oxygen nitrogen copper pipe hign pressure flexible pipe copper pipe fittings nitrogen charging connecting fitting nitrogen gas cylinder 6.
  • Page 33 MCAC-VTSM-2011-09 Installation Note: The follow table shows the relation between the minimum embedded depth and gap at the copper pipe joint. Outer Diameter of Minimum Inlaid Type Gap A—D (mm) Pipe (D) (mm)+ Depth (B) (mm) 5<D<8 0. 05—0. 21 8<D<12 11<D<16 0.
  • Page 34 MCAC-VTSM-2011-09 Installation 1. Hold proper blockage material (such as block bag and white cotton) to push against the main pipe opening at the gas side of indoor unit. 2. When pressure increases and hands could not push against the opening, suddenly release pipe opening (flushing for first time).

  • Page 35: Air Tight Test

    MCAC-VTSM-2011-09 Installation The wrong installation type: 3.2. Air Tight Test 3.2.1 Purpose and operation procedure of air tightness test 3.2.1.1. Purpose Search leak source, make sure there is no leakage in system to prevent system fault due to leakage of refrigerant.
  • Page 36 MCAC-VTSM-2011-09 Installation Phase (phase-in pressurization) Criteria Phase 1: appear large leakage after over three minutes of pressurization with 3.0kgf/cm No pressure drop Phase 2: appear major leakage after over three minutes of pressurization with 15. 0kgf/cm after modification Phase 3: appear small leakage after over 24 hours of pressurization with R410A: 40.0kgf/cm 3.2.2.2.

  • Page 37: Vacuum Drying

    MCAC-VTSM-2011-09 Installation 1) The air tightness test is conducted by pressurize nitrogen (R410Asystem: 40kgf/cm 2) It is not allowed to adopt oxide, flammable gas and toxic gas to conduct air tightness test. 3) Before pressure-keeping reading, let it rest for several minutes till pressure is stable, to record temperature, pressure value for future modification.

  • Page 38: Recharge Of Refrigerant

    MCAC-VTSM-2011-09 Installation 3.3.2.1.1. Ordinary vacuum drying 1) Firstly, connect the pressure gauge to the infusing mouth of gas pipe and liquid pipe, keep vacuum pump running for above 2 hours, and it is quality that vacuum degree of vacuum pump is below -755mmHg.
  • Page 39 MCAC-VTSM-2011-09 Installation Caution 1) The recharged refrigerant volume must be calculated according to the formula in the technical reference of outdoor unit. It isn’t allowed to calculate by running current, pressure and temperature. Because current and pressure is changeable due to the difference of temperature and length of pipeline. 2) In the cold ambient, use warm water and hot wind to warm up refrigerant storage cylinder, and don’t allow heating up directly by flame.

  • Page 40: Drainage Pipe Engineering

    MCAC-VTSM-2011-09 Installation 4. Drainage Pipe Engineering 4.1 Installation Highlights of Drainage Pipe 4.1.1. Installation principle of drainage pipe: 1) Slope; 2) reasonable pipe diameter; 3) nearby discharge 4.1.2. Installation highlights of drainage pipe: 1. Before installing condensate water pipeline, determine its route and elevation to avoid intersection with other pipelines and ensure slope is smooth and straight.
  • Page 41 MCAC-VTSM-2011-09 Installation plastics adhesive tape. The width of the adhesive tape shall not be less than 50mm to ensure fastness and prevent condensation. 7. The drainage pipe of air conditioner shall be installed separately with other waste pipe, rainwater pipe and other drainage pipe in building.
  • Page 42 MCAC-VTSM-2011-09 Installation Function of water storing elbow: When indoor unit is in motion, prevent generating negative pressure to cause drainage difficulty or blow water out of the air outlet. Installation of water storing elbow: 1. Install water storing elbow as shown in following figure: H shall be above 50mm. 2.
  • Page 43 MCAC-VTSM-2011-09 Installation horizontal main drainage pipe not be too long. 2) Units with drainage pump and natural drainage shall converge to different drainage system separately. 3) Add two elbows at air outlet, and make sure its mouth faces down to prevent dirt and so on dropping into pipe to create blockage.
  • Page 44 MCAC-VTSM-2011-09 Installation 2) Power on and let the air conditioner operate for cooling. Check operation status of drainage pump, and then turn on water level switch, check operation sound of pump and observe transparent hard pipe at drainage outlet to confirm whether it can discharge water. (In light of the length of drainage pipe, water shall be discharged after delaying about 1 minute) 3) Stop the operation of air conditioner, turn down power supply and put water-finding cover to the original place.

  • Page 45: Duct Engineering

    MCAC-VTSM-2011-09 Installation 5. Duct Engineering 5.1. Fabrication of Duct 1. The material, specification, performance and thickness of metal duct should be in accordance with the relevant regulations of present National Products Standard. The thickness of steel sheet or galvanized steel sheet should not be less than the regulation in table below: Thickness of steel sheet duct (mm) Rectangle duct Diameter (D) or edge length (b) of duct...
  • Page 46 MCAC-VTSM-2011-09 Installation As for duct of high pressure system, it should be no more than 100mm. 4) Four angles of rectangle duct flange should be designed with screw hole. 5) When improving the strength of duct flange position by adopting reinforcement method, the applied condition corresponding to flange specification could be extended.

  • Page 47: Heat Insulation Engineering

    MCAC-VTSM-2011-09 Installation 6. Heat Insulation Engineering The insulation of refrigerating equipment and pipe is carried out through general insulation method, which binding the equipment and pipe with solid multi-hole insulation material and exploiting proper wet-proof and protection measures, called insulation structure. The form of insulation structure shall be different in light of different insulation materials.
  • Page 48 MCAC-VTSM-2011-09 Installation Note: After gas pipe and liquid pipe are carried out heat insulation separately, bind with tape. If it is bound over tightly, the spliced insulation joint shall be damaged. b. The surrounding of pipe connecting section shall be carried out insulation entirely. Highlights: 1.
  • Page 49 MCAC-VTSM-2011-09 Installation 6.3 Insulation of Duct I. Insulation of duct 1. Insulation of duct parts and equipment should be conducted after confirming that the leakage test and quality of duct is qualified. 2. Usually making use of centrifugal glass cotton, rubber/plastic material or other late-model insulation duct to conduct insulation.

  • Page 50: Electrical Engineering

    MCAC-VTSM-2011-09 Installation 7. Electrical Engineering Please refer to “Part 3. Outdoor Units Specification & Performance”. Highlights of electrical installation Purchased wiring, parts and materials should be in compliance with the local and national regulations. All field wiring construction should be finished by qualified electrician. Air conditioning equipment should be grounded according to the relevant local and national electrical regulations.
  • Page 51 MCAC-VTSM-2011-09 Installation should be installed at the corresponding place. The wiring with different voltage should not pass through the same wire tube. Total sectional area of wiring through wire tube shall not exceed 40% valid area of stuffing tube. Fixing point of wire tube support shall follow the standard below: Nominal diameter of wire tube Largest gap between fixed points of wire tube (mm)
  • Page 52 MCAC-VTSM-2011-09 Installation 8. Commissioning and Trial Running 8.1 Work before Commissioning 8.1.1. Inspection and confirmation before Commissioning 1. Check and confirm that refrigeration pipe line and communication wire with indoor and outdoor unit have been connected to the same refrigeration system. Otherwise, operation troubles shall happen. 2.
  • Page 53 MCAC-VTSM-2011-09 Installation 7) Check whether each operating parameter is within the range permitted by the equipment. Note: When conducting trial run, separately test cooling mode and heating mode to judge the stability and reliability of system. 8.2.2. Commissioning for the trial run of the paralleled system 1.
  • Page 54 MCAC-VTSM-2011-09 Installation Commissioning Report for GIATSU System Date: Item name: Address: Tel: Supplier: Delivery date: dd mm yy Installation section: Principal: Commissioning section: Principal: Remark: recharged refrigeration quantity to system: Name of refrigerant: (R22, R407C, R410A) Installing section: Commissioning name: (seal) (seal) Signature:...
  • Page 55 MCAC-VTSM-2011-09 Installation Test Data for Test Run of __________System Model of outdoor unit Production series no. Operation data of outdoor unit (Cooling) Unit No.1 No.2 No.3 Run Voltage V Total current of run A Operation current of compressor A High-pressure pressure Kg/cm Low-pressure pressure Kg/cm C Inlet air temperature...
  • Page 56 MCAC-VTSM-2011-09 Installation System parameter SW1: (CHECK)――Used to query outdoor unit data. Check point sequence and corresponding actuality is as follows: Display content Note Display content Remark The cavity temp. of Slave Outdoor unit address 0,1,2 Actual Value electrical control box Outdoor unit capacity 8,10 Inverter compressor current...
  • Page 57 C./ Industria, 13 l Polígono Industrial El Pedregar 08160 Montmeló Barcelona (Spain) Phone: (0034) 93 390 42 20 Fax: (0034) 93 390 42 05 info@giatsu.com www.giatsu.com...

This manual is also suitable for:

V4+r gia28010wd2rn1tcV4+r gia33512wd2rn1tcV4+r gia40014wd2rn1tcV4+r gia45016wd2rn1tc

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