Rheem PH-16 Use & Care Manual page 12

Installing the water heater:
V V V E E N N T T T T E E R R M M I I N N A A L L
Horizontal Vent Terminal Location
The following information should be used for determining the proper location of the vent terminal
for indoor and outdoor tankless water heaters.
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
feet (61 cm) from the center line
of the terminal.
E= Clearance to unventilated soffit.
F= Clearance to outside corner.
G= Clearance to corner.
H = Clearance to each side of center
line extended meter/regulator
assembly. above
I = Clearance to service regulator vent
outlet.
J = Clearance to nonmechanical air
supply inlet to the combustion air
inlet to any building or other
appliance.
K = Clearance to mechanical air
supply inlet.
L = Clearance above paved sidewalk
or paved driveway located on
public property.
M = Clearance under veranda, porch,
deck or balcony.
* If clearances are not specified, then follow local installation codes and the requirement of the gas supplier.
** For condensing appliances: The vent for this appliance shall not terminate over public walkways, near soffit vents, crawl space vents, or other
areas where condensate or vapor could create a nuisance, hazard or cause property damage, or where condensate or vapor could cause damage
or could be detrimental to the operation of regulators, relief valves or other equipment.
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X A A I I R R S S U U P P P P L L Y Y I I N N L L E E T T
C C a a n n a a d d i i a a n n I I n n s s t t a a l l l l a a t t i i o o n n s s
I I n n d d o o o o r r a a n n d d O O u u t t d d o o o o r r
12 inches (30 cm) above anticipated
snow level.
6 inches (15 cm) for appliances < 10,000
Btuh (3 kW), 12 inches (30 cm) for
appliances > 10,000 Btuh (3kW) and <
100,000 Btuh (30kW), 36 inches (91 cm)
for appliances > 100,000 Btuh (30kW).
*
*
*
*
*
3 feet (91 cm) within a height 15 feet
(4.57 m) above the meter/regulator
assembly.
3 feet (91 cm)
6 inches (15 cm) for appliances <
10,000 Btuh (3 kW), 12 inches (30 cm)
for appliances > 10,000 Btuh (3kW)
and < 100,000 Btuh (30kW), 36 inches
(91 cm) for appliances > 100,000 Btuh
(30kW).
6 feet (1.83 m)
Not Allowed
Not Allowed
A A R R E E A A W W H H E E R R E E T T E E R R M M I I N N A A L L I I S S N N O O T T P P E E R R M M I I T T T T E E D D
U U S S I I n n s s t t a a l l l l a a t t i i o o n n s s
1
I I n n d d o o o o r r
12 inches (30 cm) above anticipated
snow level.
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.
Not Allowed
Not Allowed
U U S S I I n n s s t t a a l l l l a a t t i i o o n n s s
2
O O u u t t d d o o o o r r
12 inches (30 cm) above anticipated
snow level.
6 inches (15 cm) for appliances <
10,000 Btuh (3 kW), 9 inches (23 cm)
for appliances > 10,000 Btuh (3kW)
and < 50,000 Btuh (15kW), 12 inches
(30 cm) for appliances > 50,000 Btuh
(15kW).
*
*
*
*
*
*
*
6 inches (15 cm) for appliances < 10,000
Btuh (3 kW), 9 inches (23 cm) for
appliances > 10,000 Btuh (3kW) and <
50,000 Btuh (15kW), 12 inches (30 cm)
for appliances > 50,000 Btuh (15kW).
3 feet (91 cm) above if within 10 feet
(3 m) horizontally.
Not Allowed
Not Allowed
2