Table Of Contents - Lennox VRF VEAH024N432P Installation & Operation Instructions

1 Safety Precautions ................................................................................................................................ 1
2 Product Introduction ............................................................................................................................ 3
2.1 Names of Key Components ............................................................................................................... 3
2.2 Rated Working Condition .............................................................................................................. 3
2.3 Unit Functions ................................................................................................................................. 3
3. Preparative for Installation.................................................................................................................. 4
3.1 Pre-Installation Instruction ............................................................................................................ 4
3.1.1 Checking Product Received .................................................................................................... 4
3.1.2 Before Installation .................................................................................................................. 4
3.1.3 Codes & Regulations ............................................................................................................... 4
3.1.4 Replacement Parts .................................................................................................................. 5
3.2 Important Safety Instructions........................................................................................................ 5
3.3 Requirements for Communication Line ...................................................................................... 6
3.3.1 Select communication line for indoor unit and wired controller ........................................... 6
3.3.2 Select communication line for indoor unit and outdoor unit ......................................... 7
3.4 Wiring Requirements ..................................................................................................................... 8
4 Installation Instructions ........................................................................................................................ 9
4.1 Dimension Data .............................................................................................................................. 9
4.2 Location ......................................................................................................................................... 10
4.2.1 Installation Site ..................................................................................................................... 10
4.2.2 Air Handler ........................................................................................................................... 10
4.3 Piping Work ................................................................................................................................... 11
4.3.1 Specification of Connection Pipe .................................................................................... 11
4.3.2 Piping Preparation ............................................................................................................ 11
4.4 Condensate Removal .................................................................................................................. 12
4.5 Ductwork ....................................................................................................................................... 12
4.6 Installation of Wired Controller ................................................................................................... 12
5 Wiring Work ....................................................................................................................................... 13
5.1 Connection of Wire and Patch Board Terminal ....................................................................... 13
5.2 Power Cord Connection .............................................................................................................. 14
5.3 Connection of Communication Wire between Indoor Unit and Outdoor Unit (or indoor unit)
............................................................................................................................................................... 14
5.4 Connect Communication Wire of Wired Controller ................................................................. 14
5.5 Illuminate for Connection of Wired Controller and Indoor Units Network ............................ 15
6 Routine Maintenance ......................................................................................................................... 17
6.1 Cleaning of Filter .......................................................................................................................... 17
6.2 Maintenance before the Seasonal Use .................................................................................... 17
6.3 Maintenance after the Seasonal Use ........................................................................................ 17
7 Table of Error Codes for Indoor Unit .................................................................................................. 18
8 Troubleshooting ................................................................................................................................. 18
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