Victa VFU-18A309I Owner'S Manual Download Page 2

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Contents

1 Safety Precautions ................................................................ 1

2 Outline of the Unit and Main Parts ........................................ 2

3 Preparative for Installation .................................................... 3

3.1 Standard Accessory Parts

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3.2 Selection of the Installation Location

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3.3 Connection Pipe Requirement

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3.4 Electrical Requirement

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4 Installation of the Unit............................................................ 7

4.1 Installation of the Indoor Unit ................................................... 7

4.2 Installation of the Outdoor Unit .............................................. 11

4.3 Installation of the Connection Pipe ........................................ 12

4.4 Vacuum and Gas Leakage Inspection ................................... 16

4.5 Installation of the Drain Hose ................................................ 18

4.6 Installation of the Duct ........................................................... 22

4.7 Electrical Wiring .................................................................... 24

5 Installation of Controllers ..................................................... 29

6 Test Running ....................................................................... 29

6.1 Trial Operation and Testing

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6.2 Working Temperature Range

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7 Unit Function ....................................................................... 32

7.1 Setting of Double Indoor Room Sensors

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7.2 Checking of Outdoor Ambient Temperature

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7.3 Fresh Air Control

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8 Troubleshooting and Maintenance ...................................... 33

8.1 Troubleshooting

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8.2 Routine Maintenance

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Summary of Contents for VFU-18A309I

Page 1: ...k you for choosing these Air Conditioners please read this owner s manual carefully before operation and retain it for future reference VFU 18A309I VFU 18A309O VFU 24A309I VFU 24A309O VFU 36A309I VFU...

Page 2: ...utdoor Unit 11 4 3 Installation of the Connection Pipe 12 4 4 Vacuum and Gas Leakage Inspection 16 4 5 Installation of the Drain Hose 18 4 6 Installation of the Duct 22 4 7 Electrical Wiring 24 5 Inst...

Page 3: ...er the condition of refrigerant piping not attached properly with 2 way or 3 way valve open This may cause abnormal pressure in the refrigeration cycle that leads to breakage and even injury 7 During...

Page 4: ...Inverter Duct Type Unit 2 2 Outline of the Unit and Main Parts Fig 2 1 NOTE The connection pipe and duct for this unit should be prepared by the user The unit is standard equipped with rectangular du...

Page 5: ...Hanger or 4 To fix the indoor unit 3 Nut with Washer 8 To fix the hook on the cabinet of the unit 4 Nut with Washer 4 To fix the hook on the cabinet of the unit 5 Nut 4 To be used together with the h...

Page 6: ...d topple or fall off CAUTION Do not install where there is a danger of combustible gas leakage Do not install the unit near heat source steam or flammable gas Children under 10 years old must be super...

Page 7: ...door unit in a place where it will be free from getting dirty or getting wet by rain as much as possible 3 Install the outdoor unit where it is convenient to connect the indoor unit 4 Install the outd...

Page 8: ...9I VFU 48A309O 3 8 5 8 50 30 20X1 2 VFU 60A309I VFU 60A309O 3 8 3 4 50 30 20X1 2 Notes The connection pipe should be insulated with proper water proof insulating material The pipe wall thickness shall...

Page 9: ...aker with the working temperature at 40 If the working condition changes they should be modified according to the related national standard Take 2 pieces of power cord of 0 75mm2 as the communication...

Page 10: ...imes the weight of the main unit and which will not amplify sound or vibration If the installation location is not strong enough the indoor unit may fall and cause injuries If the job is done with the...

Page 11: ...Installing the Bolts Using the installation template drill holes for bolts four holes Fig 4 2 4 1 3 Installing the Suspension Bolts 1 Install the bolts to the ceiling at a place strong enough to hang...

Page 12: ...Inverter Duct Type Unit 10 Fig 4 2 Fig 4 3 Fig 4 4 Fig 4 5 Fig 4 6 4 1 4 Leveling The water level test must be done after installing the indoor unit to make the unit is horizontal as shown below Fig 4...

Page 13: ...FU 48A309O 958 412 1349 572 376 VFU 60A309O 1085 427 1365 620 395 4 2 2 Condensate Drainage of the Outdoor Unit Only for the heat pump unit Fig 4 9 1 It is required to install a drain pipe for the out...

Page 14: ...lve of the outdoor unit and inside the accessory bag of the indoor unit then insert them to the connection pipe after that flare the connection pipe with a flaring tool 4 Check if the flare part is sp...

Page 15: ...e place it will break 4 3 3 Connecting the Pipe at the Indoor Unit Side Detach the caps and plugs from the pipes CAUTION Be sure to apply the pipe against the port on the indoor unit correctly If the...

Page 16: ...Pipe at the Outdoor Side Unit Tighten the flare nut of the connection pipe at the outdoor unit valve connector The tightening method is the same as that as at the indoor side Fig 4 15 4 3 5 Checking...

Page 17: ...rained to the wall by saddles 2 Taping pipes must be done from bottom to top 3 All pipes are bound together by tape and restrained to wall by saddles Fig 4 17 2 If the outdoor unit is installed higher...

Page 18: ...n depends on the unit s capacity generally 20 minutes for the 18K units 30 minutes for the 24 36K units 45 minutes for the 48 60K units And verify if the pressure gauge at the low pressure side of the...

Page 19: ...ditional Charge 18K 36K Refrigerant suitable for a piping length of 5m is charged in the outdoor unit at the factory When the piping is longer than 7m additional charging is necessary 48 60K Refrigera...

Page 20: ...ce with the instructions in this installation manual and keep the area warm enough to prevent condensation Problems with the piping may lead to water leaks 1 Install the drain hose with downward gradi...

Page 21: ...right sides Select the drain port to match the local conditions Fig 4 23 3 When the unit is shipped from the factory the drain port is defaulted to be the one on the left side electric box side the po...

Page 22: ...e directly attached to the drain hose 4 Considerations for the unit with the condensate pump 1 For the unit with the condensate pump only one drain port at the side close to the electric box is prepar...

Page 23: ...l force Fig 4 29 When multiple drain hoses are used their installation should be performed as shown in the Figure below Fig 4 30 4 5 2 Testing of Drain Piping After piping work is finished check if dr...

Page 24: ...y Air Outlet Return Air Inlet Fig 4 32 Supply Air Outlet Fig 4 33 Return Air Inlet Table 4 5 Item Model Supply Air Outlet Return Air Inlet A B C D VFU 18A309I 123 736 710 166 VFU 24A309I 158 818 994 1...

Page 25: ...length of the duct means the maximum length of the supply air duct plus the maximum length of the return air duct The duct is rectangular and connected with the air inlet outlet of the indoor unit Am...

Page 26: ...encer and a static pressure box to minimize the noise 6 The installation method can be chosen with considering the conditions of the building and maintenance etc as shown in Fig 4 36 Fig 4 36 Table 4...

Page 27: ...racted capacity When the voltage is low and the air conditioner is difficult to start contact the power company to raise the voltage 4 7 2 Electrical Wiring 1 For solid core wiring Fig 4 37 1 Cut the...

Page 28: ...r is not being supplied to the indoor unit and outdoor unit Match the terminal block numbers and connection cord colors with those of the indoor unit side Erroneous wiring may cause burning of the ele...

Page 29: ...5RN F VFU 24A309O VFU 24A309I VFU 36A309O VFU 36A309I Power cord 3 2 5mm2 H07RN F Power cord 3 1 0mm2 H05RN F Communication Cords 2 0 75mm2 H05RN F VFU 48A309O VFU 48A309I VFU 60A309O VFU 60A309I Powe...

Page 30: ...ormer and small clamps for the latter Tighten the indoor outdoor connection cord and power cord respectively on the terminal boards with screws Faulty connection may cause a fire If the indoor unit co...

Page 31: ...Manual of the controller for more details 6 Test Running 6 1 Trial Operation and Testing 1 The meaning of error codes as shown below Table 6 1 Number Error code Error Remarks 1 E1 Compressor high pres...

Page 32: ...pressor stalling protection 25 LF Power protection 26 Lp Indoor and outdoor mismatch 27 U7 4 way valve direction changing protection 28 P0 Drive reset protection 29 P5 Over current protection 30 P6 Co...

Page 33: ...7 19 35 24 Nominal Heating 20 7 6 Rated Cooling 32 23 48 Low Temp Cooling 21 15 15 Rated Heating 27 24 18 Low Temp Heating 20 10 11 Note The design of this unit conforms to the requirements of ISO5151...

Page 34: ...e the wire controller User can select one from the two indoor room sensors on the basis of the engineering requirement Refer to the section of wire controller instructions for detailed operation Fig 7...

Page 35: ...roller instructions for detailed operation Fig 7 3 8 Troubleshooting and Maintenance 8 1 Troubleshooting If your air conditioning unit suffers from abnormal operation or failure please first check the...

Page 36: ...ately and contact the local service agency designated by VICTA Only ask professional serviceman to check and repair the unit 8 2 Routine Maintenance Only a qualified service person is allowed to perfo...

Page 37: ...rom the air filter using a vacuum cleaner and gently rinse them in cool water Do not use detergent or hot water to avoid filter shrinking or deformation After cleaning dry them in the shade 18k 24 60k...

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Victa VFU-18A309I, Owner'S Manual

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