18
Rinnai Commercial Hybrid System Installation and Operation Manual
Canadian Installations
(CSA B149.1)
U.S. Installations
(ANSI Z223.1 /NFPA 54)
Ref
Description
Direct Vent (Indoor Unit)
Direct Vent (Indoor Unit)
A
Clearance above grade, veranda, porch, deck, or balcony
12 in. (30 cm)
12 in. (30 cm)
B
Clearance to window or door that may be opened
36 in. (91 cm)
12 in. (30 cm)
C
Clearance to permanently closed window
*
*
D
Vertical clearance to ventilated soffit, located above the terminal within a
horizontal distance of 2 ft (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 ft
(91 cm) horizontally of the vertical
center line of the regulator vent
outlet to a maximum vertical
distance of 15 ft (4 m)
*
J
Clearance to non
-
mechanical air supply inlet to building or the
combustion air inlet to any other appliance
36 in. (91 cm)
12 in. (30 cm)
K
Clearance to a mechanical air supply inlet
6 ft (1.83 m)
3 ft (91 cm) above if within
10 ft (3 m) horizontally
L
Clearance above paved sidewalk or paved driveway located on public
property
7 ft (2.13 m) [1]
*
M
Clearance under veranda, porch, deck, or balcony
12 in. (30 cm) [2]
*
Direct Vent Termination Clearances (For Concentric and Twin Pipe)
Direct Vent
(Concentric Pipe and Twin Pipe)
1
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE TERMINAL
IS NOT PERMITTTED
X
V
SNOW
TERMINATION
Clearance in
Ref. A also
applies to
anticipated
snow line
Clearance to opposite wall is 24 in. (60 cm).
[1]
A vent shall not terminate directly above a sidewalk or paved driveway that
is located between two single family dwellings and serves both dwellings.
[2]
Permitted only if veranda, porch, deck, or balcony is fully open on a mini-
mum of two sides beneath the floor.
Clearances are in accordance with local installation codes and the
requirements of the gas supplier.
(Dégagement conforme aux codes
d
’
installation locaux et aux exigences du foumisseur de gaz.
)
