Free-Cooling Duct Connections (Optional); Thsc - Outdoor Unit Positioning - Lennox Adnova THS Series Installation, Operating And Maintenance Manual

A
THSI 025-035-045-056-073-090-105-120-145-310-380
3.2

Free-cooling duct connections (optional)

The air conditioner may be supplied with an integrated free-cooling device (optional), which uses fresh air from outside to
cool the ambient without starting up the compressor.
The device supplies the correct cooling capacity required, through a modulating motor damper.
In this case, the back side of the unit is equipped with connections collect the outside air, as follows:
In both cases, the holes in the ceiling/wall have to be protected by rainproof grilles with pre-filter to avoid water or foreign
bodies get in the conditioner.
Outside air, taken into the room by the fan, gets out through an overpressure damper, which is installed on the ceiling /
wall of the room and is protected also by external rainproof grille.
3.3

THSC - Outdoor unit positioning

The condensing unit must be positioned outside to enable its cooling.
It is connected to the air conditioner through the refrigerant lines.
@DNOVA THS_R410A-IOM-1304-E
THSI
unit
Model
B
THSI
unit
D
A B
(mm) (mm)
0 200
C
C D
(mm) (mm)
200 200
8