Lennox THS310, Installation, Operating And Maintenance Manual

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@DNOVA THS_R410A-IOM-1304-E 1
Index
1 General Description ............................................................................................................ 2
1.1 Structure .......................................................................................................................................... 2
1.2 Field of application ........................................................................................................................... 2
1.3 Cooling circuit .................................................................................................................................. 2
1.4 Installation warnings ........................................................................................................................ 5
2 Inspection / Transport ......................................................................................................... 6
2.1 Inspection on receipt ........................................................................................................................ 6
2.2 Lifting and transport ......................................................................................................................... 6
2.3 Unpacking ........................................................................................................................................ 6
3 Installation ........................................................................................................................... 7
3.1 THSI - Indoor unit positioning .......................................................................................................... 7
3.2 Free-cooling duct connections (optional) ......................................................................................... 8
3.3 THSC - Outdoor unit positioning ...................................................................................................... 8
3.4 Refrigerant connections ................................................................................................................... 9
3.5 Lines positioning .............................................................................................................................. 9
4 THS - Evacuation and Charging Operations.................................................................... 10
4.1 Introductions .................................................................................................................................. 10
4.2 Full vacuum and charge of the unit ................................................................................................ 10
4.3 Evacuating a circuit “contaminated” with refrigerant ...................................................................... 11
4.4 Charging positions (single point) ................................................................................................... 11
5 Electrical Connections ...................................................................................................... 12
5.1 Generalities .................................................................................................................................... 12
6 Starting Up ......................................................................................................................... 14
6.1 Preliminary checks ......................................................................................................................... 14
6.2 Starting up for the first time ............................................................................................................ 14
6.3 Start up .......................................................................................................................................... 15
6.4 Starting operation........................................................................................................................... 15
6.5 Checks during operation ................................................................................................................ 16
6.6 Checking the refrigerant level ........................................................................................................ 16
7 Operating Parameters Setting .......................................................................................... 17
7.1 Generalities .................................................................................................................................... 17
7.2 Maximum pressure switch ............................................................................................................. 17
7.3 Minimum pressure switch .............................................................................................................. 17
8 Maintenance ...................................................................................................................... 18
8.1 Warnings ........................................................................................................................................ 18
8.2 Periodical checks ........................................................................................................................... 18
8.3 Repairing the cooling circuit ........................................................................................................... 20
8.4 Tightness test ................................................................................................................................. 20
8.5 Hard vacuum and drying of cooling circuit ..................................................................................... 20
8.6 Recharging with refrigerant R410A................................................................................................ 21
8.7 Environmental protection ............................................................................................................... 21
9 Troubleshooting ................................................................................................................ 22