Lennox LIUH018021T431E-1 Service Manual page 9

Built-in draining pump
1.5
➢ Due to the improvement of structure, more convenient to repair or replace the draining pump.
➢ Built-in draining pump to make sure condensed water drain out reliably.
1.6 Terminals for alarm lamp and long-distance on-off controller connection are
standard
➢ Reserve terminals for the connection of alarm lamp and long-distance on-off controller, more human
control.
Indoor Units
Draining Pump
Features
7