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Installation & Operation Manual
2 Venting (continued)
17
Condensing vent options: CAT II & IV
(CAT II vent options A, B, & C requires an adapter kit - see page 14)
C
CAT II
requires an
adapter kit.
See page 14.
CAT II/IV
DirectAire Vertical installation with sidewall combustion air inlet - see
page 15.
The DirectAire Vertical with a Sidewall Combustion Air Vent system terminates the flue at the rooftop and air inlet
at the sidewall. The flue outlet and combustion air intake terminate in different pressure zones.
The optional DirectAire vent system requires the installation of specific venting materials that are purchased locally.
The termination point for the flue products must follow the vertical vent termination clearance requirements on
pages 27 and 28. These units can be identified by the Category IV and the control number M9 as noted on the unit’s
rating plate.
Follow all requirements in the General Venting and Category IV General Venting sections for proper installation and
for venting flue products to the outdoors with a vertical termination (see pages 22 and 23).
The DirectAire Vertical system requires the installation of an additional pipe to supply combustion air from
outdoors directly to the appliance. Follow all requirements under the Combustion Air Inlet section on pages 25 and
26.
Sidewall combustion air inlet: The air inlet cap for the sidewall air inlet must be purchased from the appliance
manufacturer.
The part numbers for the required sidewall air inlet cap kit are listed by model. Each kit includes the special
combustion air inlet cap for installation on an exterior sidewall. The sidewall air inlet cap supplied in the kit is sized
to provide combustion air for a single appliance only.
TABLE - 2E
AIR INLET CAP TERMINATIONS
MODEL
CAT II
CAT IV
CAT IV
KIT
NUMBER
MODEL
CAT II CAT IV
CAT IV
KIT
NUMBER
AIR
SIZE
VENT
SIZE
AIR
SIZE
VENT
SIZE
AIR
SIZE
VENT
SIZE
AIR
SIZE
VENT
SIZE
PB/FN0502-M9 5" 7" 5" 4" SAK3003 PB/FN1501-M9 6" 8" 6" 6" SAK3004
PB/FN0752-M9 5" 9" 5" 5" SAK3003 PB/FN1701-M9 7" 9" 7" 7" SAK3005
PB/FN1002-M9 6" 10" 6" 6" SAK3004 PB/FN2001-M9 8" 10" 8" 8" SAK3006
PB/FN1302-M9 6" 12" 6" 8" SAK3004
-- -- -- -- -- --
Air Inlet Cap
D
CAT IV
Sidewall termination with combustion air from equipment room - see
page 15.
The connection from the appliance flue outlet to the sidewall vent cap MUST be made with listed Category IV vent
materials and accessories. The installer must supply suitable vent pipe material. The sidewall vent cap must be
purchased from the appliance manufacturer.
The sidewall vent cap kit includes the wall penetration assembly and the discharge screen assembly. All required
Category IV vent pipe and fittings must be purchased locally.
The termination point for the flue products must follow the sidewall vent termination clearance requirements on
pages 28 and 29. These units can be identified by the Category IV and the control number M9 as noted on the
unit’s rating plate. Note: PB/FN0502 - 1302 - F9 models with Category I sized vent connection can be sidewall
vented with Category IV vent material using the vent decreaser included in the SVK Kit listed in Table 2F. This
venting technique with corresponding vent decreasers is not available on the larger PB/FN1501 - 2001 models.
Follow all requirements in the General Venting and Category IV General Venting sections for proper installation and
for venting flue products to the outdoors with a sidewall termination (see pages 22 and 23).
TABLE - 2F
FLUE VENT TERMINATION SIZES
MODEL
CAT IV
VENT SIZE
CAT IV
KIT
MODEL
CAT IV
VENT SIZE
CAT IV
KIT
MODEL
CAT IV
VENT SIZE
CAT IV
KIT
PB/FN0502-M9 4" SVK3069 PB/FN0502-F9 4" SVK3056 PB/FN1501-M9 6" SVK3018
PB/FN0752-M9 5" SVK3070 PB/FN0752-F9 5" SVK3057 PB/FN1701-M9 7" SVK3019
PB/FN1002-M9 6" SVK3018 PB/FN1002-F9 6" SVK3058 PB/FN2001-M9 8" SVK3068
PB/FN1302-M9 8" SVK3068 PB/FN1302-F9 8" SVK3059
--
-- --
Vent Cap