Rinnai REU-VEP2730FFD-US Installation And Operation Manual page 30

4.5.8 Other than Direct Vent (Outdoor): Termination Clearances
Figure 26: Outdoor Termination Clearances
Table 12
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
L Clearance above paved sidewalk or paved driveway located on public
property
M Clearance under veranda, porch, deck, or balcony
Notes: In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
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[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 inches minimum from the top of the water heater to the overhang. The area under the overhang must be open on 3 sides
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TERMINATION
Clearance in
Ref. A also
applies to
anticipated
snow line
SNOW
Description
Clearance to opposite wall is 24 in. (60 cm).
Rinnai Tankless Water Heater Installation and Operation Manual
X
AIR SUPPLY INLET
V
VENT TERMINAL
AREA WHERE TERMINAL
IS NOT PERMITTTED
I
Regulator vent outlet
U.S. Installations
(ANSI Z223.1/NFPA 54)
Other than direct vent
(Outdoor unit)
12 in. (30 cm)
4 ft (1.2 m) below or to side of opening; 1 ft (300 mm) above
opening
12 in.
4 ft (1.2 m) below or to side of opening; 1 ft (300 mm) above
opening
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.
*Clearances are in accordance with local installation
codes and the requirements of the gas supplier.
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