Lennox VEPS075N432K User Manual Download | Manualshive

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DC Inverter Multi VRF System

8

4.2 Connection Pipe

4.2.1 Schematic Diagram of Piping Connection

Fig.4

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Summary of Contents for VEPS075N432K

Page 1: ...DC Inverter Multi VRF System User Manual and keep it for further reference...

Page 2: ......

Page 3: ...ore reusing it 3 Please properly select the model according to actual using environment otherwise it may impact the using convenience 4 This product has gone through strict inspection and operational...

Page 4: ......

Page 5: ...turer 3 After verification the defect of product is directly caused by corrosive gas 4 After verification defects are due to improper operation during transportation of product 5 Operate repair mainta...

Page 6: ...it and Mounting Hole 7 4 2 Connection Pipe 8 4 3 Installation of Connection Pipe 12 4 4 Vacuum Pumping Refrigerant Adding 17 4 5 Electric Wiring 19 5 Check Items after Installation and Test Operation...

Page 7: ...Follow this manual to complete the installation work Please read this manual carefully before turning on or repairing the unit Installation should be performed by the distributor or qualified technic...

Page 8: ...gen deficit when gas heater or oil heater is used in the room Never plug in or unplug the power plug directly to turn on or turn off the air conditioner Once the air conditioner is turned on it can be...

Page 9: ...tion concerning use of the appliance in a safe way and understand the hazards involved Children shall not play with the appliance Cleaning and user maintenance shall not be made by children without su...

Page 10: ...l capacity of indoor units should be within 50 135 of that of the outdoor unit Model Max sets of connectable IDUs VEPS075N432K 13 VEPS096N432K 17 VEPS120N432K 20 3 can be connected to various indoor u...

Page 11: ...injury or even death Item needs to be followed Improper operation might lead to personal injury or property damage Select a location which is strong enough to hold unit s weight so that unit can stand...

Page 12: ...quirements Refer to the table below for piping work requirements R410A Refrigerant System Outer diameter mm inch Wall thickness mm 6 35 1 4 0 8 9 52 3 8 0 8 12 7 1 2 0 8 15 9 5 8 1 0 19 05 3 4 1 0 22...

Page 13: ...m 7 4 1 Dimension of Outdoor Unit and Mounting Hole Unit Outline and Installation Dimension mm Fig 3 Unit mm Model A B C D E VEPS075N432K 940 320 1430 632 350 VEPS096N432K 940 460 1615 610 486 VEPS120...

Page 14: ...DC Inverter Multi VRF System 8 4 2 Connection Pipe 4 2 1 Schematic Diagram of Piping Connection Fig 4...

Page 15: ...wable Length and Height Difference of Connection Pipe Piping parameters of VEPS075N432K VEPS096N432K VEPS120N432K Allowable value Fitting pipe Total length actual length of fitting pipe 300m L1 L2 L3...

Page 16: ...f pipe from ODU to the 1st indoor branch will be determined by the dimension of outdoor connection pipe Fig 6 Dimension of outdoor connection pipe Basic module Pipe dimension Connection method Gas pip...

Page 17: ...oor units X kW Model Y type branch X 20 VEBC01A 20 X 30 VEBC01B 30 X 70 VEBC02A 70 X 135 VEBC03A 135 X VEBC04A 4 2 5 Dimension of Pipe between Indoor Branches Select pipe between indoor branches accor...

Page 18: ...tween indoor and outdoor units Keep the number of bends as little as possible Radius of curvature should be as large as possible 2 Weld the connection pipe between indoor and outdoor units Please stri...

Page 19: ...oint Twist on the flared nut tightly by hand as in Fig 13 Make sure indoor pipe is correctly connected Improper location of the center will prevent flared nut from being securely twisted Thread of nut...

Page 20: ...ng gun to unsolder straight pipe 1 and straight pipe 2 Install connection pipe 1 and connection pipe 2 to the corresponding position and then seal the apertures with welding rod First weld the liquid...

Page 21: ...plate rear side plate and connection board Then open the soundproof cotton Use a soldering gun to unsolder connection pipe 1 and connection pipe 2 Rotate them to a proper angle and install them to the...

Page 22: ...match with various copper pipes Use pipe cutter to cut in the middle of the pipe section that is of proper dimension and remove burrs as well See Fig 20 3 Y type branch must be installed vertically o...

Page 23: ...een pipe and wall See Fig 21 Fig 21 5 Thermal insulating material of branches should be the same as that of the pipeline The attached foam of branches cannot be taken as insulating material 6 When wra...

Page 24: ...s service 2 Calculation of the amount of additional refrigerant Calculation method of the quantity of additional refrigerant based on liquid pipe Quantity of additional refrigerant length of liquid pi...

Page 25: ...re that it is consistent with system s rated voltage 3 Do not pull the power cord with force 4 All electrical installation must be performed by qualified technicians in accordance with local laws regu...

Page 26: ...nding terminal Do not connect the ground wire to the following Water pipe Gas pipe Drain pipe Other places that are deemed as not secured by professional technicians 4 5 2 Wiring Diagram 1 Connection...

Page 27: ...er is 40 C If working condition changes please adjust the specification according to national standard 4 5 3 Engineering Wiring of Power Supply and Communication Cable 1 Please refer Fig 26 and 27 for...

Page 28: ...op shake or emit noise Gas leakage test is taken or not Insufficient cooling heating capacity Unit gets proper thermal insulation or not There may be condensation and dripping Drainage is smooth or no...

Page 29: ...hread ends and forceps holder must be removed from the unit 5 Check whether unit s appearance and pipeline system has been damaged during transportation 6 Calculate the quantity of refrigerant that ne...

Page 30: ...main board s SW3 button for 5s to start debugging 01 ON 2s later next step starts 02_ Allocate addresses 02 Ad Display circularly System is allocating addresses 10s later display as below 02 L7 Displ...

Page 31: ...he ratio is out of range unit will display as below 05 CH Display circularly Rated capacity ratio of IDU is too high Change the combination way of IDU and ODU to make the ratio within range And restar...

Page 32: ...Press main board s SW4 button and display shows 09 OC Then check if the gas and liquid valves of ODU are completely open After confirmation press the SW4 button again Then compressor will start runni...

Page 33: ...value will be within 44 53 C In heating mode if ambient temp is above 5 C system s high pressure value is within 40 52 C If ambient temp is low and many IDUs are turned on the high pressure will be lo...

Page 34: ...Please check the items below before calling for maintenance Problems Causes What to do Unit doesn t work Fuse or circuit breaker is cut off Replace fuse or reset the circuit breaker Power failure Res...

Page 35: ...over current protection Indoor Error Code Content Error Code Content L0 Malfunction of IDU uniform L1 Protection of indoor fan L2 Auxiliary heating protection L3 Water full protection L4 Over current...

Page 36: ...high pressure sensor F3 Malfunction of low pressure sensor F5 Malfunction of discharge temperature sensor of compressor 1 J1 Over current protection of compressor 1 b1 Malfunction of outdoor ambient...

Page 37: ...ging refrigerant automatically AE Charging refrigerant manually AF Fan AJ Alarm for cleaning filter AP Debugging confirmation for startup of unit AU Long distance emergency stop Ab Emergency stop of o...

Page 38: ...nits 4 If outdoor unit has rust please apply some paint to it so as to prevent the rust from growing 8 5 Parts Replacement Parts and components can be obtained from nearby LENNOX office or LENNOX dist...

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Page 40: ...9 N 7 2 1 2 C 20 Lennox Industries Inc F 3 3 2 0 0 1 www lennoxglobal com...

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