Lennox INNOV DM R Series Application Manual page 33

Index
1 General Description ............................................................................................................. 2
1.1 Structure..................................................................................................................................... 4
1.2 Application limits ......................................................................................................................... 4
1.3 Cooling circuit ............................................................................................................................. 5
1.4 Installation warnings ................................................................................................................... 8
2 Inspection / Transport / Positioning ................................................................................... 9
2.1 Inspection on receipt ................................................................................................................... 9
2.2 Lifting and transport .................................................................................................................... 9
2.3 Unpacking .................................................................................................................................. 9
2.4 Positioning .................................................................................................................................. 9
3 Installation .......................................................................................................................... 12
4 Evacuation and Charging Operations .............................................................................. 14
4.1 Introductions ............................................................................................................................. 14
4.2 Full vacuum and charge of the unit ........................................................................................... 14
4.3 Evacuating a circuit "contaminated" with refrigerant .................................................................. 15
4.4 Charging positions (single point) ............................................................................................... 15
5 Electrical Connections ...................................................................................................... 16
5.1 Generalities .............................................................................................................................. 16
6 Operating Diagrams ........................................................................................................... 17
7 Start-Up .............................................................................................................................. 18
7.1 Preliminary checks ................................................................................................................... 18
7.2 Starting operations ................................................................................................................... 18
7.3 Checks during operations ......................................................................................................... 19
7.4 Checking the refrigerant charge (DX versions) .......................................................................... 19
8 Setting Operating Parameters........................................................................................... 20
8.1 Generalities .............................................................................................................................. 20
8.2 Maximum pressure switch........................................................................................................ 20
8.3 Minimum pressure switch ........................................................................................................ 20
9 Maintenance ....................................................................................................................... 21
9.1 Warnings .................................................................................................................................. 21
9.2 Generalities .............................................................................................................................. 21
9.3 Set the right fan speed .............................................................................................................. 23
9.4 EC fans .................................................................................................................................... 24
10 Troubleshooting ............................................................................................................. 26
11 Technical Data ................................................................................................................ 27
INNOV@ ECFAN DHR -AGU-0912-E • 1 •