Direct Vent" Combustion Air Intake Piping - IBC SFC 199 Installation And Operating Instructions Manual

D
V
E
B
V
L
V VENT TERMINAL
Figure 15: Vent Terminal Clearance
NOTE
Combustion air connection may
be moved from one side to the
other:
- Lift tab at back of plug.
- Rotate counter-clockwise 1/8th
of a turn.
- Lift plug out of cabinet and
move to other opening: rotate
plug and push down tab to lock
in place.
INSTALLATION
SFC BOILER / WATER HEATERS - SFC 199
C
FIXED
V
CLOSED
OPERABLE
V
F
B
X AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED

1.4.7 "Direct Vent" Combustion Air Intake Piping

The unit must always be installed as a Direct Vent venting system with the
combustion air piped directly from the outdoors to the unit's combustion air
connection. Provisions for combustion and ventilation air are in accordance with
the section "Air for Combustion and Ventilation," of the National Fuel Gas Code,
ANSI Z223.1/NFPA 54, or Clause 8.2, 8.3 or 8.4 of Natural Gas and Propane
Installation Code, CAN/CSA B149.1, or applicable provisions of the local building
codes.
Figure 16: Direct vent combustion air intake
INSIDE
CORNER DETAIL
G
V
A
H
B
B
V
FIXED
CLOSED
V
OPERABLE
B
X
V
B
J
A
I
M
X
V
K
1-15