Recommended Vent/Air Intake Terminal Position - Rinnai E75CN Installation & Servicing Instructions Manual

6.7.4
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
or grade or, whichever is
greater. Please refer to your
local codes for the snow
level in your area.
Terminal positions
Ref Description
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 soffi t,
located above the terminal within a
horizontal distance of 2 feet (61 cm) from
the center line of the terminal
E Clearance to unventilated soffi t
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 nonmechanical 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
[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 fl oor.
* For clearances not specifi ed 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.
clearances of venting system terminals

Recommended vent/air intake terminal position

level
Canadian Installations - Direct Vent
and non Direct Vent
12 inches (30 cm)
6 inches (15 cm) for appliances < 10,000
Btuh (3 kW), 12 inches (30 cm) for
appliances > 10,000 Btuh (3 kW) and <
100,000 Btuh (30 kW), 36 inches (91 cm)
for appliances > 100,000 Btuh (30 kW)
*
*
*
*
*
3 feet (91 cm) within a height 15 feet (4.5
m) above the meter/regulator assembly
36 inches (91 cm)
6 inches (15 cm) for appliances < 10,000
Btuh (3 kW), 12 inches (30 cm) for
appliances > 10,000 Btuh (3 kW) and <
100,000 Btuh (30 kW), 36 inches (91 cm)
for appliances > 100,000 Btuh (30 kW)
6 feet (1.83 m)
7 feet (2.13 m) [1]
US Installations Direct Vent
12 inches (30 cm)
6 inches (15 cm) for appliances <
10,000 Btuh (3 kW), 9 inches (30 cm) for
appliances > 10,000 Btuh (3 kW) and <
50,000 Btuh (30 kW), 12 inches (91 cm)
for appliances > 50,000 Btuh (30 kW)
*
*
*
*
*
*
*
6 inches (15 cm) for appliances <
10,000 Btuh (3 kW), 9 inches (30 cm) for
appliances > 10,000 Btuh (3 kW) and <
50,000 Btuh (30 kW), 12 inches (91 cm)
for appliances > 50,000 Btuh (30 kW)
3 feet (91 cm) above if within 10 feet (3
m) horizontally
*
figure 15
US Installations
non Direct Vent
12 inches (30 cm)
4 feet (1.2 m) below or to
side of opening; 1 foot (300
mm) above opening
*
*
*
*
*
*
*
4 feet (1.2 m) below or to
side of opening; 1 foot (300
mm) above opening
3 feet (91 cm) above
if within 10 feet (3 m)
horizontally
7 feet (2.13 m)
table 6
37