Rinnai SENSEI RSC160i Installation And Operation Manual page 36

4.5.5 Direct Vent (Concentric and Twin Pipe):
Termination Clearances
The information below applies to Concentric and Twin Pipe.
TERMINATION
SNOW
Figure 21: Direct Vent Termination Clearances
Table 13
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
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
J Clearance to non-mechanical air supply inlet to building or the
combustion air inlet to any other appliance
K Clearance to a mechanical air supply inlet
Clearance above paved sidewalk or paved driveway located on public
L
property
M Clearance under veranda, porch, deck, or balcony
Notes: In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code.
1
In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
2
[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
minimum of two sides beneath the floor..
If locally adopted installation codes specify clearances different than those illustrated, then the most stringent clearance shall prevail.
36
TERMINATION
Clearance in
Clearance in
Ref. A also
Ref. A also
applies to
applies to
anticipated
anticipated
snow line
snow line
SNOW
Description
Clearance to opposite wall is 24 in. (60 cm).
Canadian Installations
(CSA B149.1)
Direct Vent (Indoor Unit)
12 in. (30 cm)
36 in. (91 cm)
3 ft. (91 cm) within a height
of 15 ft. (4.6 m)
3 ft. 91 cm)
36 in. (91 cm)
6 ft (1.83 m)
7 ft (2.13 m) [1]
12 in. (30 cm) [2]
*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.)
Rinnai Tankless Water Heater Installation and Operation Manual
X
AIR SUPPLY INLET
X
AIR SUPPLY INLET
V
VENT TERMINAL
V
VENT TERMINAL
AREA WHERE TERMINAL
AREA WHERE TERMINAL
IS NOT PERMITTTED
IS NOT PERMITTTED
I
Regulator vent outlet
U.S. Installations
1
(ANSI Z223.1/NFPA 54)
Direct Vent (Indoor Unit)
12 in. (30 cm)
12 in. (30 cm)
*
*
*
*
*
12 in. (30 cm)
3 ft (91 cm) above if within 10 ft (3
m) horizontally
Vents for Category II and IV
appliances cannot be located above
public walkways or other areas
where condensate or vapor can
cause a nuisance or hazard.
2
*
*
*
*
12 in.
*
*
*