Rinnai E75CN - Manual (Page 29)

Installation & Servicing Instructions Rinnai E-Series
29
6.7.4 Recommended vent/air intake terminal position
Terminals should be positioned as to avoid products of combustion entering openings into buildings or other vents.
Maintain 12” of clearance
above the highest
anticipated snow level
or grade or, whichever is
greater. Please refer to
your local codes for the
snow level in your area.
clearances of venting system terminals table 6
Terminal positions figure 14
[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.
* 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.
Ref Description Canadian Installations - Direct Vent
and non Direct Vent
US Installations Direct Vent US Installations
non Direct Vent
A Clearance above grade, veranda, porch,
deck, or balcony 12 inches (30 cm) 12 inches (30 cm) 12 inches (30 cm)
B Clearance to window or door that may
be opened 6 inches (15 cm) for appliances < 10,000
Btuh (3 kW), 12 inches (30 cm) for ap-
pliances > 10,000 Btuh (3 kW) and <
100,000 Btuh (30 kW), 36 inches (91 cm)
for appliances > 100,000 Btuh (30 kW)
6 inches (15 cm) for appliances < 10,000
Btuh (3 kW), 9 inches (30 cm) for ap-
pliances > 10,000 Btuh (3 kW) and <
50,000 Btuh (30 kW), 12 inches (91 cm)
for appliances > 50,000 Btuh (30 kW)
4 feet (1.2 m) below or to
side of opening; 1 foot (300
mm) above opening
C Clearance to permanently closed window * * *
D Vertical clearance to ventilated sof-
fit, located above the terminal 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 * * *
H Clearance to each side of center line ex-
tended above meter/regulator assembly 3 feet (91 cm) within a height 15 feet (4.5
m) above the meter/regulator assembly
* *
I Clearance to service regulator vent outlet 36 inches (91 cm) * *
J Clearance to nonmechanical air supply
inlet to building or the combustion air inlet
to any other appliance 6 inches (15 cm) for appliances < 10,000
Btuh (3 kW), 12 inches (30 cm) for ap-
pliances > 10,000 Btuh (3 kW) and <
100,000 Btuh (30 kW), 36 inches (91 cm)
for appliances > 100,000 Btuh (30 kW)
6 inches (15 cm) for appliances < 10,000
Btuh (3 kW), 9 inches (30 cm) for ap-
pliances > 10,000 Btuh (3 kW) and <
50,000 Btuh (30 kW), 12 inches (91 cm)
for appliances > 50,000 Btuh (30 kW)
4 feet (1.2 m) below or to
side of opening; 1 foot (300
mm) above opening
K Clearance to a mechanical air supply
inlet 6 feet (1.83 m) 3 feet (91 cm) above if within 10 feet (3
m) horizontally
3 feet (91 cm) above if wit-
hin 10 feet (3 m) horizontally
L Clearance above paved sidewalk or
paved driveway located on public
property 7 feet (2.13 m) [1] * 7 feet (2.13 m)
M Clearance under veranda, porch, deck,
or balcony
12 inches (30 cm) [2] * *