Flue Terminal Clearances (Ans Z21.10.3 ● Csa 4.3 ) - State Water Heaters Tankless On-Demand 705 Series 200 Operation And Installation Manual

Flue Terminal Clearances (
D
E
B
L
Ref
A Clearance above grade, veranda, porch, deck, or balcony
B Clearance to window or door that may be opened
C Clearance to permanently closed window
Vertical clearance to ventilated soffit, located above the terminal
D within a horizontal distance of 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
Clearance to each side of center line extended above meter/
H
regulator assembly
I Clearance to service regulator vent outlet
Clearance to nonmechanical air supply inlet to building or the
J
combustion air inlet to any other appliance
K Clearance to a mechanical air supply inlet
Clearance above paved sidewalk or paved driveway located on
L
public property
M Clearance under veranda, porch, deck, or balcony
A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves
1
both dwellings.
Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
2
∗
For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, clearances are in accordance with local installation codes and the
requirements of the gas supplier.
ANS Z21.10.3 ● CSA 4.3)
INSIDE
CORNER DETAIL
G
A
B
B
C
FIXED
CLOSED
OPERABLE
F
B
Description
305, 505, 705 Indoor Manual
H
I
B
FIXED
CLOSED
OPERABLE
J
X
B
A
V
US Installations
12 inches (30 cm)
12 inches (30 cm)
12 inches (30 cm)
3 feet (91 cm) above if within
10 feet (3 m) horizontally
M
K
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE
TERMINAL IS NOT
PERMITTTED
*
*
*
*
*
*
*
*
*
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