Refrigerant Connections; Lines Positioning - Lennox Adnova THS Series Installation, Operating And Maintenance Manual

3.4

Refrigerant connections

THIS OPERATION MUST BE CARRIED OUT BY AN EXPERT TECHNICIAN.
Keep refrigerant lines as short as possible and use the suggested diameter and the indication of the "Piping Design
Criteria" (attached to the unit documentation)
3.5

Lines positioning

Connect the air conditioner to the condensing unit by using refrigerant lines in hard or soft copper.
• Limit the number of pre shaped bends; if this is not possible, every bend must have a radius of at least 100mm.
• The gas line must be insulated.
• The liquid line must be kept far from heat sources; if this is not possible it has to be insulated.
• If the condensing unit is placed above the evaporating unit, the last segment of the intake tube (insulated tube)
must lean towards the condensing unit.
• If, on the other hand, the condensing unit is placed under the conditioner it is advisable to create a trap on the
intake tube.
The recommended sizes for the power cables and emergency line are shown in the related electrical drawings.
@DNOVA THS_R410A-IOM-1304-E 9