Related Manuals for Lennox VEPS075N432K
Summary of Contents for Lennox VEPS075N432K
- Page 1 DC Inverter Multi VRF System User Manual 9(361. 9(36 1. 9(361. 7KDQN \RX IRU VHOHFWLQJ /(112; DLU FRQGLWLRQHUV 3OHDVH UHDG WKLV PDQXDO FDUHIXOO\ EHIRUH RSHUDWLRQ and keep it for further reference.
- Page 3 To Users Thank you for selecting LENNOX’s product. Please read this instruction manual carefully before installing and using the product, so as to master and correctly use the product. In order to guide you to correctly install and use our product and achieve expected operating effect, we hereby instruct as below:...
- Page 5 Exception Clauses Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons: (1) Damage the product due to improper use or misuse of the product. (2) Alter, change, maintain or use the product with other equipment without abiding by the instruction manual of manufacturer.
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Page 6: Table Of Contents
Contents 1 Safety Notices (Please be sure to abide) ..............1 2 Product Introduction ...................... 1 2.1 Names of Main Parts ....................... 4 2.2 Combinations of Indoor and Outdoor Units ................4 2.3 Operating Range ........................4 3 Preparation before Installation ..................5 3.1 Standard Parts ......................... -
Page 7: Safety Notices (Please Be Sure To Abide)
DC Inverter Multi VRF System 1 Safety Notices (Please be sure to abide) WARNING: If not abide strictly, it may cause severe damage to the unit or the people. NOTE: If not abide strictly, it may cause slight or medium damage to the unit or the people. This sign indicates that the operation must be prohibited. - Page 8 DC Inverter Multi VRF System Never fail to comply with the Never short circuit or cancel nitrogen-charging welding the pressure switch to prevent process. Do charge nitrogen unit damage. when welding the pipes. When installation is finished, As for the unit controlled by please check whether the the wired controller, connect drainage pipes, pipelines and...
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Page 9: Product Introduction
10%~100% can be realized. Various product lineups are provided with capacity range from 22.4kW to 35kW, which can be widely used in residential, commercial and working area and especially applicable to places with big load change. LENNOX residential air conditioner is absolutely your best choice. -
Page 10: Names Of Main Parts
(2) The total capacity of indoor units should be within 50%~135% of that of the outdoor unit. Model Max sets of connectable IDUs VEPS075N432K VEPS096N432K VEPS120N432K (3) can be connected to various indoor units. When any one of the indoor units receives operating command, outdoor unit will start operation as per required capacity. -
Page 11: Preparation Before Installation
DC Inverter Multi VRF System 3 Preparation before Installation NOTE: Graphics here are only for reference. Please refer to actual products. Unspecified dimensions are all in mm. 3.1 Standard Parts Please use the supplied standard parts as required. Parts for Outdoor Unit Name Appearance Remark... -
Page 12: Piping Work Requirements
DC Inverter Multi VRF System If the ODU is totally surrounded by walls, please refer to the following figures for space dimension: Unit：mm Fig.2 3.3 Piping Work Requirements Refer to the table below for piping work requirements: R410A Refrigerant System Outer diameter (mm/inch) Wall thickness (mm) Φ6.35(1/4) -
Page 13: Dimension Of Outdoor Unit And Mounting Hole
DC Inverter Multi VRF System 4.1 Dimension of Outdoor Unit and Mounting Hole Unit Outline and Installation Dimension (mm). Fig.3 Unit: mm Model VEPS075N432K 1430 VEPS096N432K 1615 VEPS120N432K 1615... -
Page 14: Connection Pipe
DC Inverter Multi VRF System 4.2 Connection Pipe 4.2.1 Schematic Diagram of Piping Connection Fig.4... - Page 15 Y type branch joint is adopted to connect indoor and outdoor units. Connecting method is shown in the figure below. NOTE: Equivalent length of one Y-type branch is 0.5m. Fig.5 Allowable Length and Height Difference of Connection Pipe Piping parameters of VEPS075N432K , VEPS096N432K , VEPS120N432K : Allowable Fitting pipe value...
- Page 16 Dimension of 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. Pipe dimension Basic module Connection method Gas pipe (mm) Liquid pipe (mm) VEPS075N432K Φ19.05 Φ9.52 Welding connection VEPS096N432K Φ22.20 Φ9.52 VEPS120N432K Φ25.40...
- Page 17 DC Inverter Multi VRF System 4.2.4 Selection of Indoor Branches Select indoor branches according to the total capacity of downstream indoor units. If the capacity exceeds that of the outdoor unit, capacity of outdoor unit prevails. Fig.7 R410A Refrigerant system Total capacity of downstream indoor units X (kW) Model X<20...
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Page 18: Installation Of Connection Pipe
DC Inverter Multi VRF System 4.2.6 Dimension of Pipe between Indoor Branch and IDU Dimension of pipe between indoor branch and IDU should be consistent with the dimension of indoor pipe. Fig. 9 Rated capacity of IDU C(kW) Gas pipe (mm) Liquid pipe (mm) C≤2.8 Φ9.52... - Page 19 DC Inverter Multi VRF System Fig. 10 4.3.3 Pipe Bending (1) Reshape the pipe by hand. Be careful not to damage the pipe. Fig. 11 Fig. 12 (2) Do not bend the pipe over 90°. (3) If pipe is repeatedly bent or stretched, it will get hard and difficult to bend and stretch again. Therefore, do not bend or stretch the bend for over 3 times.
- Page 20 DC Inverter Multi VRF System Fig.13 Fig.14 Pipe diameter Tightening torque Φ6.35mm 15~30(N·m) Φ9.52mm 35~40(N·m) Φ12.7mm 45~50(N·m) Φ15.9mm 60~65(N·m) 4.3.5 Outdoor Pipe Connection During engineering installation, the connection pipe inside the unit must be wrapped by insulation sleeve. (1) Pipe connection for : As shown in Fig.15 and Fig.16, open the outermost soundproof cotton and place a fire barrier between compressor and straight pipe.
- Page 21 DC Inverter Multi VRF System Fig. 16 (2) Pipe connection for VEPS096N432K , VEPS120N432K : 1) If connection pipe is connected at the front, no special treatment is needed. You can weld the pipeline directly to connection pipe 1 and connection pipe 2. 2) If connection pipe is connected at the side as shown in Fig.17 and Fig.18, open the front side plate, rear side plate and connection board.
- Page 22 DC Inverter Multi VRF System Fig.18 4.3.6 Installation of Y-type Branch (1) Y-type Branch. Fig.19 (2) Y-type branch has several pipe sections with different dimension, which facilitates to 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.
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Page 23: Vacuum Pumping, Refrigerant Adding
DC Inverter Multi VRF System 4.3.7 Thermal Insulation for Pipeline (1) For multi VRF system, every copper pipe should be labeled so as to avoid misconnection. (2) At the branch inlet, leave at least 500mm straight pipe section. (3) Thermal insulation for pipeline 1) To avoid condensate or water leakage on the connection pipe, the gas pipe and liquid pipe must be wrapped with thermal insulating material and adhesive tape for insulation from the air. - Page 24 DC Inverter Multi VRF System valve, as shown below. Fig. 22 4.4.2 Refrigerant Adding (1) Refrigerant quantity of outdoor unit before delivery: Model Refrigerant Qty (kg) NOTES: ① The refrigerant amount charged before delivery doesn’t include the amount that needs to be added to indoor units and the connection pipeline.
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Page 25: Electric Wiring
DC Inverter Multi VRF System (3) Calculation example. Fig. 23 IDU: IDU ① IDU ② IDU ③ IDU ④ Duct type Duct type Duct type Duct type Model VESD024N432U VESD017N432U VESD012N432U VESD008N432U Liquid pipe: Pipe size Φ9.52 Φ9.52 Φ9.52 Φ6.35 Length Pipe size Φ9.52... - Page 26 Circuit Number of ground Number of power cord Model Power supply breaker wire × Min sectional × Min sectional area capacity(A) area (mm VEPS075N432K 208-230V 3~ 60Hz 1×6 3×6 VEPS096N432K 208-230V 3~ 60Hz 1×10 3×10 VEPS120N432K 208-230V 3~ 60Hz 1×10...
- Page 27 DC Inverter Multi VRF System NOTES: ① Selection of circuit breaker and power cord in the above table is based upon unit’s maximum power (maximum current). ② Specification of power cord is based on the working condition where ambient temperature is 40°C and multi-core copper cable (working temperature is 90°C, e.g.
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Page 28: Check Items After Installation And Test Operation
DC Inverter Multi VRF System Fig. 26 Engineering Wiring View of VEPS075N432K Fig. 27 Engineering Wiring View of VEPS096N432K , VEPS120N432K 5 Check Items after Installation and Test Operation 5.1 Check Items after Installation Check items Possible conditions due to improper spallation... -
Page 29: Test Operation And Debugging
DC Inverter Multi VRF System Check items Possible conditions due to improper spallation Check Unit may have malfunction or components may Power cord meets the required specification? get damaged. Is the air inlet/outlet blocked? Insufficient cooling (heating) capacity. Length of refrigerant pipe and the charging amount of The refrigerant charging amount is not accurate. - Page 30 DC Inverter Multi VRF System 5.2.2 Test Operation and Debugging Description of test operation procedures and main board display of ODU. VEPS075N432K , VEPS096N432K , VEPS120N432K : Description of each stage of debugging progress —— Debugging code Code meaning and operation method...
- Page 31 DC Inverter Multi VRF System Description of each stage of debugging progress —— Debugging code Code meaning and operation method Progress Code Display status “00~16” displays the quantity of indoor unit. Confirm the number manually. If the number is not consistent with the display one, cut off power of IDU and ODU and check whether Display 04/00~16...
- Page 32 DC Inverter Multi VRF System Description of each stage of debugging progress —— Debugging code Code meaning and operation method Progress Code Display status Preheat time for compressor is less than 8 hours. Display will be as in the left until the preheat time reaches 8 hours. Press Display main board’s SW3 button to confirm manually that the preheat 08/U0...
- Page 33 DC Inverter Multi VRF System 5.2.3 Appendix: Reference of Normal Operation Parameters Debug item Parameter name Unit Reference Outdoor °C — temperature When compressor starts, discharge temp in cooling mode is within 70~105°C and at least 10°C Compressor higher than the high pressure saturation temp. discharge °C ...
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Page 34: Common Malfunctions And Troubleshooting
Too many heat resources in the room. Reduce heat resources. Filter is blocked and dirty. Clean the filter. NOTE: If problem cannot be solved after checking the above items, please contact LENNOX service center and describe the cases and models. -
Page 35: Error Indication
DC Inverter Multi VRF System (2) Following circumstances are not malfunctions. Malfunction Reason Unit starts up immediately after it is turned Overload protection switch makes it run after a off. 3-min delay. Unit doesn’t run. Power is just turned on. Standby operation lasts for about 1min. - Page 36 DC Inverter Multi VRF System Error Error Content Content Code Code Drive IPM high temperature protection of Desynchronizing protection of inverter compressor compressor High-voltage protection of compressor’s Drive current detection circuit malfunction of drive DC bus bar compressor Low-voltage protection of compressor’s Phase-lacking of inverter compressor drive DC bus bar Drive charging circuit malfunction of...
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Page 37: Maintenance And Care
DC Inverter Multi VRF System Error Error Content Content Code Code Communication malfunction between main Malfunction of lack of IDU control and inverter fan driver Alarm because project code of IDU is Emergency status of compressor inconsistent Emergency status of fan Rated capacity is too high Malfunction of lack of main control unit Rated capacity is too low... -
Page 38: Notice Before Seasonal Use
(5) If unit starts up after not operating for a long time, it should be power on 8 hours before operation starts so as to preheat the outdoor compressor. (6) Check whether outdoor unit is securely installed. If there is any problem, please contact LENNOX authorized service center. - Page 40 &RQWDFW XV DW OHQQR[JOREDOKYDF#OHQQR[LQWOFRP 20 Lennox Industries Inc. )RU D FRPSOHWH OLVW RI WKH UHJLVWHUHG DQG FRPPRQ ODZ WUDGHPDUNV RZQHG E\ /HQQR[ ,QGXVWULHV ,QF SOHDVH YLVLW www.lennoxglobal.com...