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U.S. POWER VENT
'_
WARNING
VENT HOOD(S) MAY BE
Minimum
18 in. (45.72 cm)
EXTREMELY
HOT
DURING
OPERATION.
J -_
Minimum 3 ft. (91 cm) within a
12 in. (30 cm)
height of 15 ft. (4.6 m) above
I\
Minimum
above grade or
meterlregulator
assembly
_
4 ft. (1.2 m)
expected snow fall///
12 in. (30 cm)
I'_
to side or
S
Minimum 3 ft. ( 91 cm ) clearance
from soffit "-'-_L'
_
12 in. (30 cm)
to service regulator vent outlet
I[_'_
;b°ved°°r
M, ,mu,
1_
Minimum\
_
\\/
/
" "
um 12 in. (30 cm)
/J -
..
_
_
r"_l
I
under veranda,
porch,
7ft,(2.3m)_
_l
_
_'_
2ft
(61cm)
_'_
"
above
"_" I
, J.
_
/rromou_s,ae
__..-----'-"'_-'_
/
I
I
I
deck
or balcony
public sidewalk
'
Idriveway
or paved
_ '
\\
_IHI_'_\\
/__/_
_
_11
_'1 _ ""
/
I__
(see f°°tn°te 1)
\_-,--'-"7_
.
,"___"-T_
_
/
I T'-/
I
/Minimum
(see footnote 2)
_-_
I
I
J
/4
F _
Fr
Lx_
_I _x_.
I _
_
_
_
_
/
3 ft. (91 cm)
I_
__RABL_I
c.OS_-_ I
J,._"_
_
'/_
,,_
/
above a
_'1
/
L_JJ cLOSLU_
t
_
_
._XX_
_
I_..--"_'1
t_/
mechanical
air
I
/
_-E-_
_
/ _
1_)\
_
_
_
L._ _
supply inlet
I
__
t
_
L_,
I
\
l_x_]J_
;/
_
./1
within 10 ft. (3 m)
[-"
_/
X
__'-""-
_,_. ,'.--4
horizontally
Minimum
. .
cl_ "
MinimHm 4if: I'.."^
m''X_m_
";"__
:=" : :"
2
I
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_
\
_
Minimum 4 ft (1.2 m) below or side of,
12 in.
(30
_..; _
\
\
12 in. (30 cm) above non mechanical
from sides of
Trom s=oe ox wmaow_
_'XJ
-_
/
....
\ ..........
\ ........
air supply inlet into building or
permanently
that may be open
mlmum
4 ft. (1.2 m)
Minimum
4 ft. (1.2 m)
combustion air inlet to another
below a window that
from side of window
appliance or Minimum 9 in. (23 cm)
closed window
Minimum 12 in. (30 cm) above
may be open
that may be open
for appliances with 10,000 btuh (3 Kw)
window or door that may be open
to 50,000 btuh (t5 Kw) inputs and 12
[]
VENT TERMINAL
(_
AIR SUPPLY INLET
[]
AREA WHERE TERMINAL
IS NOT PERMITTED
in.(30cm)forappliancesgreaterthan
50,000 btuh (15 Kw) to an air supply
inlet to a direct vent appliance.
1, Permitted
only if veranda,
porch, deck or balcony is fully opened on a minimum of two sides beneath the floor,
2, A vent shall not terminate above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings,
FIGURE 31
_lk CAUTION
TO PREVENT
EXHAUSTING
PRODUCTS
FROM CIRCULATING
TO THE AIR INTAKE IN
WINDY/COLD
AREAS,
THE MAXIMUM
PRACTICAL
DISTANCE
BETWEEN
THESE TWO
TERMINALS
IS RECOMMENDED.
32
Part Number 320169-001
dRaFt Jun 9 130
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