whl-648 Rev. 001 Rel. 003 Date 10.8.19
31
D. Exhaust Vent and Intake Pipe Location
Figure 18 - Exit Terminals for Direct Vent Systems - ANSI Z223.1 / NFPA 54 for US and CAN/CSA B149.1 for Canada
B
H
B
B
M
G
E
LP-179-CC
A
FIXED
CLOSED
OPERABLE
I
E
E
E
CLOSED
OPERABLE
FIXED
03/28/17
E
E
D
I
E
E
I
DETAIL
I
INSIDE CORNER
A
B
B
J
L
K
F
C
K
E
E
E
Exhaust Vent Terminal
I
Intake Pipe Terminal
Area Where Intake Terminal Is Not Permitted
WARNING
!
The building owner is responsible for keeping the exhaust and intake terminations free of snow, ice, or other potential blockages, as well
as scheduling routing maintenance. Failure to keep the vent piping terminations clear and properly maintain the boiler could result in
property damage, severe personal injury, or death.
For each floor containing bedroom(s), a carbon monoxide detector and alarm shall be placed in the living area outside the bedrooms, as
well as in the room that houses the boiler. Detectors and alarms shall comply with NFPA 720 (latest edition). Failure to comply with these
requirements could result in product damage, severe personal injury, or death.
DESCRIPTION
US
CANADA
A
Clearance above grade, veranda, porch, deck, or balcony
1 foot (30 cm)
B
Clearance to window or door that may be opened
Direct Vent
1 foot
3 feet (91 cm)
Power Vent
4 ft below or to side of
opening; 1 ft above opening
C
Clearance to permanently closed window
*
D
Vertical clearance to ventilated soffit located above the terminal within
a horizontal distance 2 feet (61 cm) from the center line of the terminal
*
E
Clearance to unventilated soffit
*
F
Clearance to outside corner
*
G
Clearance to inside corner
*
H
Clearance to each side of center line extended above meter / regulator
assembly
*
I
Clearance to service regulator vent outlet
*
Above a regulator
within 3 feet (91 cm)
horizontally of the
vertical center line of
the regulator vent outlet
to a maximum vertical
distance of 15 ft (4.5 m)
J
Clearance to nonmechanical air supply inlet to building or
the combustion air inlet to any other appliance
Direct Vent
1 foot
3 feet (91 cm)
Power Vent
4 ft below or to side of
opening; 1 ft above opening
K
Clearance to mechanical air supply inlet
3 feet above if within 10 feet
horizontally
6 feet (1.83 m)
L
Clearance above paved sidewalk or paved driveway located
on public property
Direct Vent
*
7 feet (2.13 m)
Power Vent
7 feet (2.13 m)
M
Clearance under veranda, porch deck, or balcony
*
1 foot (30 cm)
Table 14 - Vent Termination Clearances - *NOTE: For clearances not specified in ANSI Z223.1 / NFPA 54 for US and CAN/CSA B149.1 for Canada,
please use clearances in accordance with local installation codes and the requirements of the gas supplier.
Summary of Contents for WBRC 140 Series
Page 21: ...whl 648 Rev 001 Rel 003 Date 10 8 19 21 E Applications Figure 10 Piping Symbol Legend ...
Page 40: ...whl 648 Rev 001 Rel 003 Date 10 8 19 40 Figure 33 Electrical Wiring Diagram ...
Page 41: ...whl 648 Rev 001 Rel 003 Date 10 8 19 41 Figure 34 Ladder Diagram ...
Page 81: ...whl 648 Rev 001 Rel 003 Date 10 8 19 81 Notes ...
Page 82: ...whl 648 Rev 001 Rel 003 Date 10 8 19 82 This Page Intentionally Left Blank ...
Page 83: ...whl 648 Rev 001 Rel 003 Date 10 8 19 83 This Page Intentionally Left Blank ...
