Condensing Vent Option: Category Ii - RBI Infinite Energy2 IW199 Installation And Operation Instructions Manual

12 - INSTALLATION - CATEGORY II: Vent and combustion air
AIR OPENING
AIR OPENING
Figure 12-2 - Vertical vent with combustion
air from equipment room
Figure 12-3 - Vertical direct vent installation with
rooftop combustion air inlet
EQUIPMENT
ROOM
EQUIPMENT
ROOM
12.3 - Condensing vent
option: CATEGORY II:
Vertical vent with combustion
air from equipment room
The flue outlet terminates on the rooftop.
The termination point for the flue products must
follow the vertical vent termination clearance
requirements on section 11.12. These units can
be identified by the CATEGORY II as noted on
the unit's rating plate.
The flue from this category II appliance must
have all vent joints and seams sealed gastight.
A category II vent system has specific vent
material and installation requirements.
The flue products in the vent system may
be cooled below their dew point and form
condensate in the flue. The materials used for
a category II vent must be resistant to any
corrosive damage from flue gas condensate.
Follow all requirements in Section 5.1, 11.2
and 11.9. Follow all requirements for venting
flue products to the outdoors with a vertical
termination as per Section 11.12.
Vertical direct vent installation
with rooftop combustion air
inlet
The vertical direct vent system is installed with
a Category II flue and a separate combustion
air pipe to the outdoors. The flue outlet and
combustion air intake must both terminate on
the rooftop.
The termination point for the flue products must
follow the vertical vent termination clearance
requirements on Section 11.12. These units can
be identified by the Category II as noted on the
unit's rating plate.
Follow all requirements in Sections 5.1, 11.2
and 11.9. Follow all requirements for venting
flue products to the outdoors with a vertical
termination as per Section 11.12.
The vertical direct vent 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 11.5.
80