Direct Vent - Sidewall Separate Pipes (Category Iv) - Weil-McLain SVF 500 Manual

svf series
500/600
DIRECT VENT — Sidewall Separate Pipes (Category IV)
Sidewall Termination Location
WARNING
!
Follow all location requirements in this section.
Failure to comply can result in severe personal
injury, death, or substantial property damage.
• The minimum distance from adjacent public
walkways, adjacent buildings, windows that can
open, and building openings shall not be less than the
values specified in the National Fuel Gas Code – ANSI
Z223 1/NFPA 54, latest edition, or the National Gas
and Propane Installation code – CAN/CSA B149 1
Figure 36 Direct Vent Installations - Requirements for termination location
MINIMUM CLEARANCES
DOOR
VENT
3 feet above
(not below)
if within 10 feet
horizontally
FORCED AIR INTAKE
ROOF
OVERHANG
5 feet min.
6 feet min. to a wall or
V V
10 feet min. if opposite
E E
an operable opening in
N N
T T
another building
12 inches min.
GRADE or SNOW LINE
550-100-273/0523
boiler manual
1
OPENABLE
WINDOW
VENT
12 inches min. 12 inches min.
(NOT recommended — see
below right illustration)
VENT
1 foot above or
4 feet below if within
4 feet horizontally
NON-MECHANICAL METER, REGULATOR,
AIR INTAKE RELIEF VALVE, etc.
DO NOT TERMINATE:
WALL
• Vent and air terminations must be installed at
least 12" (0 31m) above grade and snow line
• Consideration should be given to avoid possible
damage caused by vent plumes and condensate
when choosing a venting configuration and
location
• Maintain a minimum clearance of 4 ft (1 22
m) horizontally from electrical meters, gas meters,
regulators, and relief equipment Do not install
above or below meters, regulators, or relief
equipment
DO NOT TERMINATE:
12 inches min.
VENT
Avoid possible contact
with people or pets
VENT
4 feet above
if within 4 feet
horizontally
DO NOT
Avoid spaces where
terminate
wind eddies can cause
above a
recirculation
public
walkway
VENT
DO NOT terminate above a
door or window —
condensate can freeze and
cause ice formations
PUBLIC WALKWAY
insTallaTion
MECHANICAL
EQUIPMENT
PLANTS
Avoid possible
damage to
surfaces due
to condensate
freezing
DECK OR BALCONY
CONSIDER
WINDOW
The vent plume
can block the
view when the
the vent is located
below a window.
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