Vent Terminal Clearances; Vent Terminal Minimum Clearances - Pacific energy trenton A series Installation And Operating Instructions Manual

Installer information
Minimum clearances to the vent terminal must be
maintained as shown in (Figure 24) and Roof Pitch
Table. Measure clearances to the nearest edge of
termination hood.
NOTE: Vent terminal must not be recessed
NOTE: LOCAL CODES OR REGULATIONS MAY REQUIRE
DIFFERENT CLEARANCES.
Roof Pitch Table
Flat to 6/12
Over 6/12 to 7/12
Over 7/12 to 8/12
Over 8/12 to 9/12
Over 9/12 to 10/12
Over 10/12 to 11/12
Over 11/12 to 12/12
D
E
V
B
L
V VENT TERMINAL
A= *12 inches (30 cm) min.
B= *12 inches (30 cm) min.
C= 12 inches (30 cm) min.
D= 16 inches (40 cm) min.
E= 16 inches (40 cm) min.
F= 6 inches (15 cm) min.
G= 6 inches (15 cm) min.
H= 3 feet (90 cm) min.
I= *6 feet (1.8 m) min.
J= *12 inches (30 cm) min.
K= *6 feet (1.8 m) min.
L= *7 feet (2.1 m) min.
M= **16 inches (76 cm) min Clearance under veranda, porch, deck, or balcony
^ a vent shall not terminate directly above a side-walk or paved driveway which is located between two single family dwellings and serves both dwellings*
** only permitted if veranda, porch, deck, or balcony is fully open on a minimum of 2 sides beneath the oor*
* as speci ed in CGA B149 Installation Codes, Note: local Codes or Regulation may require different clearances
* for U.S.A. Installations follow the current National Fuel Gas Code, ANSI Z223.1
TRNT.BODYA

Vent Terminal Clearances

(minimum)
ft m
1.00 0.30
1.25 0.38
1.50 0.46
2.00 0.61
2.50 0.76
3.25 0.99
4.00 1.22

Vent Terminal Minimum Clearances

C
V FIXED
CLOSED
F
OPEN-
V
ABLE
B
Figure 25: Vent terminal minimums table.
A
AIR SUPPLY INLET
Clearances above grade, veranda, porch, deck, or balcony
Clearance to window or door that may be opened
Clearance to permanently closed window recommended to prevent condensation on window
Vertical clearance to ventilated soffit located above the terminal within a horizontal distance of 2 feet (60 cm)
from the edge of the terminal
Clearance to unventilated soffit
Clearance to outside corner
Clearance to inside corner
*Not to be installed above a meter/regulator assembly within 3 feet (90 cm) horizontally from the center-line
of the regulator
Clearance to service regulator vent outlet
Clearance to non mechanical air supply inlet to building or the combustion air inlet to any other appliance
Clearance to a mechanical air supply inlet
^ Clearance above paved side-walk or a paved driveway located on public property
VENT TERMINAL MINIMUM CLEARANCES
TO ADJACENT STRUCTURES
(122 cm)
Figure 24: Vent terminal minimum clearances.
G
V
A
B V
V
OPEN-
FIXED
ABLE CLOSED
A
V J
A
AREA WHERE TERMINAL
IS NOT PERMITTED
16
36"
(91.5 cm)
See Roof Pitch
Table for clearance
48"
ADJACENT
STRUCTURES
OR FENCE
H
I
G
M
V
K
GAS METER
G
5055.45-A 021115-40
24"
(61 cm)
A