Aprilaire 112 Maintenance Instruction page 2

drain fitting. Make sure the drain line has a constant downward slope and is
not flattened or blocked.
12. Following Water Panel evaporator replacement and maintenance, reassemble
humidifier.
13. Reconnect electrical power.
14. Turn on water supply.
15. Check system operation: With the furnace blower operating and the furnace
calling for heat, turn up humidistat and check system operation.
16. Set humidistat to its original position.