Paloma PH-28c Indoor and Outdoor - Manual (Page 15)

15
D
V
V
E
FIXED
CLOS ED
OPE
RAB LE
OPE RAB LE
FIXE D
CLOS ED
v
v
B
L
F
C
B
v
v
v
X
B
B
B
A
J
B
I
H
X v
M
K
v
G
A
The following information should be used for determining the proper location of the vent terminal
for indoor and outdoor tankless water heaters.
Canadian Installations 1 US Installations 2
Canadian Installations 1 US Installations 2
V VENT TERMINAL X AIR SUPPLY INLET A R E A WHERE TERMINAL IS NOT PERMITTED
1 In accordance with current CAN/CGA-B149 Installation Codes.
2 In accordance with current ANSI Z223.1/ NFPA 54 National Fuel Gas Code.
+ A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family
dwellings and serves both dwellings.
* If clearances are not specified then follow local installation codes and the requirement of the gas supplier.
Installing the water heater.
Horizontal Vent Terminal Location
H = Clearance to each side of center line
extended meter/regulator assembly.
above
3 feet (91 cm) within a height 15 feet
(4.57 m) above the meter/regulator
assembly. *
I = Clearance to service regulator vent
outlet.
3 feet (91 cm) *
J = Clearance to nonmechanical air
supply inlet to the combustion air
inlet to any building or other
appliance.
6 inches (15 cm) for appliances < 10,000
Btuh (3 kW), 12 inches (30 cm) for
appliances > 10,000 Btuh (30 cm) for
appliances > 10,000 Btuh (30kW), 36
inches (91 cm) for appliances > 100,000
Btuh (30kW). 4 feet (1.2 m) below or to side of
opening; 1 foot (300 mm) above opening.
K = Clearance to mechanical air supply
inlet.
6 feet (1.83 m) 3 feet (91 cm) above if within 10 feet (3
m) horizontally.
L = Clearance above paved side walk or
paved driveway located on public
property.
7 feet (2.13 m) 7 feet (2.13 m)
M = Clearance under veranda, porch,
deck or balcony.
Not Allowed Not Allowed
A= Clearance above grade, veranda,
porch, deck or balcony.
12 inches (30 cm) above anticipated
snow level.
12 inches (30 cm) above anticipated
snow level.
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
appliances > 10,000 Btuh (30 cm) for
appliances > 10,000 Btuh (30kW), 36
inches (91 cm) for appliances > 100,000
Btuh (30kW). 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 soffit
located above the terminal within a
horizontal distance of 2 feet (61 cm)
from the center line of the terminal.
4 feet (1.2 m) 4 feet (1.2 m)
E= Clearance to unventilated soffit. * *
F= Clearance to outside corner. * *
G= Clearance to inside corner. * *
M = Clearance under veranda, porch,
deck or balcony.
3 feet (91 cm) 3 feet (91 cm)