Installation Clearances; Drains - Lennox FLATAIR KFC Series Installation And Operating Manual

2.- INSTALLATION

2.5.- INSTALLATION CLEARANCES

Clearance around the unit for service and maintenance.
Consult other options for outdoor mounting or changes in position of the air return duct if the unit
is to be hung.

2.6.- DRAINS

All heat Pump units have a ¾" steel threaded drain pipe welded to the condensation tray.
One PVC drain trap is supplied with the the heat pump units.
Connect the trap to the drain pipe on the unit and mount the drain pipe with at least a 2% incline from the trap.
Also slightly tip the unit (2%) toward the drainage side. Check that the condensation trays are clean and free from
dirt and other debris from the works and that water drains correctly.
Drain pipe
2%
16
2%
Trap