Vent system options:
(Note: Installations shown below are representative, actual installations may vary from those shown.)
A
This option uses a vertical rooftop flue termination
with air supplied from the equipment room - see
page 17.
This option uses a powered vent assembly to
exhaust the flue products out a sidewall with air
supplied by a pipe from the sidewall - see page 26.
B
This option uses a vertical conventional vent for
flue products with air supplied by a pipe from the
sidewall or rooftop - see page 20.
E
This option uses a sealed AL29-4C flue and a
separate combustion air pipe to the outdoors.
This system terminates both the flue and
combustion air inlet in the same pressure zone
- see page 27.
C
This option uses a powered vent assembly
to exhaust the flue products out a sidewall
vent termination with air supplied from the
equipment room - see page 23.
This option uses the installation of a special air
inlet / vent cap on top of the unit - see page 31.
IMG00580
IMG00583
NOTE: CAT I B-VENT MATERIALS MAY BE USED WHEN THE
POWERED VENT IS CONNECTED DIRECTLY TO THE OUTSIDE
VENT CAP. IF THE POWERED VENT IS NOT CONNECTED
DIRECTLY TO THE OUTSIDE VENT CAP, THEN CAT IV - AL29-4C
VENT MATERIALS MUST BE USED FROM THE POWERED VENT
TO THE OUTSIDE VENT CAP.
IMG00584
12"
MIN
3'
MIN
NOTE: CAT I B-VENT MATERIALS MAY BE USED WHEN THE
POWERED VENT IS CONNECTED DIRECTLY TO THE OUTSIDE
VENT CAP. IF THE POWERED VENT IS NOT CONNECTED
DIRECTLY TO THE OUTSIDE VENT CAP, THEN CAT IV - AL29-4C
VENT MATERIALS MUST BE USED FROM THE POWERED VENT
TO THE OUTSIDE VENT CAP.
IMG00585
12"
MIN
3'
MIN
F
Installation & Operation Manual
2
Venting
(continued)
15
CONVENTIONAL NEGATIVE
DRAFT VENTING
VERTICAL VENT/DUCTED AIR
SIDEWALL/POWER VENTING
OUTDOOR VENTING
DIRECT VENT/SEALED
COMBUSTION
SIDEWALL/POWER VENTING/
DUCTED AIR
D
