Lennox VRF VECC007C432P Installation Manual Download 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: 

(1) This  appliance  is  not  intended  for  use  by  persons  (including  children)  with  reduced

physical, sensory or mental capabilities, or lack of experience and knowledge, unless they
have been given supervision or instruction concerning use of the appliance by a person
responsibility for their safety. Children should be supervised to ensure that they do not
play with the appliance.

(2) In  order  to  ensure  reliability  of  product,  the  product  may consume  some  power  under

stand-by  status  for  maintaining  normal  communication  of  system  and  preheating
refrigerant and lubricant. If the product is not to be used for long, cut off the power supply;
please energize and preheat the unit in advance before 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 test before leaving the

factory. In order to avoid damage due to improper disassembly and inspection, which may
impact the normal operation of unit, please do not disassemble the unit by yourself. You
can contact with the special maintenance center of our company if necessary.

(5) For personal injury or property loss and damage caused by improper operation such as

improper  installation  and  debugging,  unnecessary  maintenance,  violation  of  related
national laws and rules and industrial standard, and violation of this instruction manual,
etc., we will bear no liability.

(6) When the product is faulted and cannot be operated, please contact with our maintenance

center as soon as possible by providing the following information.
1) Contents of nameplate of product (model, cooling/heating capacity, product No., ex-

factory date).

2) Malfunction status (specify the situations before and after the error occurs).

(7) All the illustrations and information in the instruction manual are only for reference. In

order  to  make  the  product  better,  we  will  continuously  conduct  improvement  and
innovation. We have the right to make necessary revision to the product from time to time
due  to  the  reason  of  sales  or  production,  and  reserve  the  right  to  revise  the  contents
without further notice.

(8) The final right to interpret for this instruction manual belongs to LENNOX.

Summary of Contents for VRF VECC007C432P

Page 1: ...ompact 4 Way Cassette AHRI Thank you for selecting LENNOX air conditioners Please read this manual carefully before operation and keep it for further reference Indoor VECC007C432P VECC009C432P VECC012...

Page 2: ......

Page 3: ...ct inspection and operational test before leaving the factory In order to avoid damage due to improper disassembly and inspection which may impact the normal operation of unit please do not disassembl...

Page 4: ......

Page 5: ...tallation and Drainage System Testing 10 4 4 Panel Installation 14 4 5 Installation of Wired Controller 15 5 Wiring Work 15 5 1 Connection of Wire and Patch Board Terminal 16 5 2 Power Cord Connection...

Page 6: ...ctions in this manual Read this manual carefully before starting up or checking the machine Installation should be performed by dealer or qualified technicians Do not install the product by yourself I...

Page 7: ...oor or window to maintain good air circulation in case the room may lack of oxygen Never start or stop the air conditioner by inserting or removing the power cord Do not turn off the air conditioner u...

Page 8: ...use electric shock or fire hazard Please contact LENNOX service center and have it repaired by professional technicians Any personal injury or property loss caused by improper installation improper de...

Page 9: ...ted Heating 21 1 70 15 6 60 3 Preparations for Installation Note this picture is for reference only please refer to the actual product the unit of dimension is mm 3 1 Standard Fittings Please use the...

Page 10: ...om drainage pipe 3 There should be no obstruction near air inlet and air outlet 4 Follow the installation distance required in the fig below to ensure sufficient space for maintenance 5 The installati...

Page 11: ...1 Select Communication Line for Indoor Unit and Wired Controller Fig 3 3 1 Material type Total length of communication line between indoor unit and wired controller L m Wire size mm2 Material Standard...

Page 12: ...d wire 3 4 Wiring Requirements 1 Dimension of power cord and capacity of air switch Notes The circuit breaker and power cord specification in above sheet are based on max power max current of the unit...

Page 13: ...432P 1 4 1 2 VECC015C432P 1 4 1 2 VECC018C432P 3 8 5 8 Important The drilling work and installation of unit must be carried out by qualified personnel 4 1 2 Suspend the Indoor Unit 1 Drill bolt holes...

Page 14: ...plate will prevent the washer from falling 3 The usage of paper pattern Refer to paper pattern of installation for ceiling opening dimension The center of ceiling opening is indicated on the paper pa...

Page 15: ...4 Wrap the connection pipe and joint with sponge and then tie them firmly with tape 4 3 Drainage Pipe Installation and Drainage System Testing 4 3 1 Notice for Installation of Drainage Pipe 1 The dra...

Page 16: ...he connection pipes PVC pipe outside diameter 25mm thickness 1 5mm 2 Keep drainage pipe short and sloping downwards at a gradient of at least 1 for preventing forming air bubbles 3 Insert the drainage...

Page 17: ...he installation height of raising pipe for drainage should be lower than B The gradient from raising pipe towards drainage direction should be at least 1 2 If the raising pipe is vertical with the uni...

Page 18: ...ump etc 1 In case of commissioning finished please energize the IDUs and switch to cooling or dry mode meanwhile the water pump operates you can check the draining through the drain socket 2 If commun...

Page 19: ...r installation if not please adjust the body position Fig 4 4 2 3 Connect the decoration panel terminals Female to body terminals male as shown in figure4 4 3 Fig 4 4 3 4 4 2 Panel Installation 1 Deta...

Page 20: ...the body firmly 5 After tightening screws reinstall the air inlet grille Fig 4 4 5 4 5 Installation of Wired Controller Wired controller is optional accessory If wired controller is needed please cont...

Page 21: ...rd and connection wire between indoor unit and outdoor unit 11 If the project needs higher static pressure you can set it through the wired controller 12 The appliance must be fitted with means for di...

Page 22: ...th single phase power supply 1 Detach the electric box cover 2 Let the power cord pass through the wiring through holes 3 Connect the power cord to terminal L N 4 Fix the power card with wiring clamp...

Page 23: ...unication wire to terminal H1 and H2 of indoor 4 bit wiring board 4 Fix the communication wire with clamp 5 Wiring instructions of signal receiver and wired controller 1 Wired controller standard is s...

Page 24: ...st be the same if they are controlled by the same wired controller When the indoor unit is controlled by two wired controllers the addresses of the two wired controllers should be different through ad...

Page 25: ...k if the air inlet and air outlet of indoor and outdoor unit are blocked 2 Check if the grounding wire is in good condition 3 Check if all the power cord and communication cable are securely connected...

Page 26: ...loop is abnormal The unit stops after running for a while The inlet or outlet of ODU or IDU are blocked by obstacle Control loop is abnormal Set the unit in cooling mode when outdoor ambient T is high...

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Page 28: ...t us at 1 305 718 2901 lennoxglobalhvac lennoxind com c 2019 Lennox Industries Inc For a complete list of the registered and common law trademarks owned by Lennox Industries Inc please visit www lenno...

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