ECR International Utica Boilers MAH-100 Installation, Operation & Maintenance Manual page 32

FIGURE 5-25 - Flue Terminal Location
All vent pipe and combustion air pipe and fittings shall comply with the following:
Use only manufacturer approved venting materials or venting materials primer and glue approved to: ULC S636 in Canada, or
UL 1738 in the U.S.
Materials used in the U.S. shall comply with Authority having jurisdiction and in absence of such with: ANSI/ASTM D1785, ANSI/
ASTM F441, ANSI/ASTM F493.
D
E
B
L
A Clearance above grade, veranda, porch, deck, or balcony
Clearance to window or door that may be opened
B
C
Clearance to permanently closed window
Vertical Clearance to ventilated soffit located above the terminal within a
D
horizontal distance of 2 feet (610 mm) from the center line of the terminal
E
Clearance to unventilated soffit
F
Clearance to outside corner
G
Clearance to inside corner
Clearance to each side of center line extended above meter/ regulator
H
assembly
I
Clearance to service regulator vent outlet
Clearance to non-mechanical air supply inlet to building or the combustion
J
air inlet to any other appliance
K
Clearance to mechanical air supply inlet
Clearance above paved sidewalk or paved driveway located on public
L
property
† A vent shall not terminate directly above a sidewalk or paved driveway that is
located between two single family dwellings and serves both dwellings.
Note:
Local Codes or Regulations may require different clearances. Flue terminal must be exposed to external air and position must
allow the free passage of air across it at all times. In certain weather conditions the terminal may emit a plume of steam. Avoid
positioning terminal where this may cause a nuisance.
5 - COMBUSTION AIR AND VENT PIPING
C
V
Fixed
Closed
V
F
Operable
B
V
VENT TERMINAL
Vent Termination Minimum Clearances
INSIDE CORNER
DETAIL
G
V
A
B
B
Operable
Fixed
Closed
B
V
V
J
AIR SUPPLY INLET
US Installations
12" (305 mm)
12" (305 mm)
*12" (305 mm)
18" (457 mm)
18" (457 mm)
9" (229 mm)
36" (456 mm)
3 ft. (0.9 m) within a height of
15 ft. (4.5 m) above the meter/
regulator assembly
3 ft. (0.9 m)
12" (305 mm)
*3 ft. (0.9 m)
*7 ft. (2.1 m)
*For clearances not specified in ANSI Z223.1/NFPA 54 or
CSA B149.1, clearance will be in accordance with local
installation codes and the requirements of the gas supplier
and these installation instructions.
28
H
I
V
M
V
AREA WHERE TERMINAL IS
NOT PERMITTED
Canadian Installations
12" (305 mm)
*12" (305 mm)
18" (457 mm)
18" (457 mm)
36" (456 mm)
3 ft. (0.9 m)
3 ft. (0.9 m)
3 ft. (0.9 m)
6 ft. (1.8 m)
7 ft. (2.1 m) †
240013354 REV A [07/01/2021]
K
3 ft. (0.9 m)
9" (229 mm)