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Contents

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

2 Product Introduction ......................................................................... 4

2.1 Names of Key Components ....................................................... 4

2.2 Rated Working Condition .......................................................... 4

2.3 Unit Functions ........................................................................... 4

3 Preparations for Installation .............................................................. 5

3.1 Standard Fittings ....................................................................... 5

3.2 Location for Installation ............................................................. 6

3.3 Requirements for Communication Line ..................................... 6

3.4 Wiring Requirements ................................................................ 8

4 Installation Instructions ..................................................................... 9

4.1 Installation of Indoor Unit ......................................................... 9

4.2 Refrigerant Pipe Connection ................................................... 12

4.3 Drainage Pipe Installation and Drainage System Testing ......... 12

4.4 Installation of Air Duct ............................................................. 15

4.5 Installation of Wired Controller ............................................... 18

5 Wiring Work .................................................................................... 19

5.1 Connection of Wire and Patch Board Terminal ....................... 19

5.2 Power Cord Cnnection ........................................................... 20

5.3 Connection of Communication Wire between Indoor Unit and

Outdoor Unit(or indoor unit) ........................................................ 20

5.4 Connect Communication Wire of Wired Controller ................ 21

5.5 Illuminate for Connection of Wired Controller and Indoor Units

Network ......................................................................................... 21

6 Routine Maintenance ...................................................................... 22

6.1 Cleaning of Filter ..................................................................... 22

6.2 Maintenance before the Seasonal Use ................................... 22

6.3 Maintenance after the Seasonal Use ...................................... 22

7 Table of Error Codes for Indoor Unit ............................................... 22

8 Troubleshooting .............................................................................. 23

Lennox VRF VELD024N432U User Manual

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