Carrier 38QUS018DS2 Series Installation Manual page 14

2. INDOOR UNIT INSTALLATION
2.2.7 Change the air ventilation direction (Alternative: Rear or Bottom)
NOTE
For standard unit, air intakes from rear side. Air intake direction can be modify at site from rear side to
bottom side following the process in below.
1. Remove the air filter from the flange (two locations).
Remove the flange from the rear side.
Remove the ventilation panel from the bottom side.
Ventilation panel
3. Attach the air filter to the flange in the manner shown in the diagram.
2.2.8 Install fresh air duct
All the indoor units reserve the hole to joint the fresh air pipe. The hole size as following:
Duct joint for fresh air
7
GB-13
2. Attach the seal sponge at the place showing in the following
diagram.
Reinstall the removed flange at the bottom and reinstall the
removed the ventilation panel at the rear side.
Flange
Seal sponge
MODLE
09~18
Ø90mm
80mm