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INNOV@ ECFAN DHR -AGU-0912-E • 1 •

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

Lennox INNOV DM R Series User Manual

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