Typical installations
COMBUSTION AIR
INLET (NON-DIRECT
VENT/ 1-PIPE APPLICATION
COMBUSTION AIR PIPE
(DIRECT VENT/2-PIPE APPLICATION)
OUTDOOR UNIT
A/C COIL
COMBUSTION
AIR INLET
(NON-DIRECT
1-PIPE APPLICATION)
ELECTRONIC
AIR CLEANER
AIRFLOW
Basement — Upflow Application
ELECTRONIC
AIR CLEANER
HUMIDIFIER
A/C COIL
FRONT OF
FURNACE
Closet — Downflow Application
VENT PIPE
HUMIDIFIER
GAS-FIRED
WATER HEATER
FRONT OF
FURNACE
VENT
COMBUSTION
AIR (DIRECT VENT/
2 PIPE APPLICATION
AIRFLOW
A05065
A05064
A05064
OUTDOOR
UNIT
A05065
17