Noritz CB199-DV - Page 12

12
Installation Clearances
Chapter3.–SafetyRequirements
Description US Non-Direct 1 Canadian Non-Direct 2
A Clearance above grade, veranda, porch, deck, or balcony
12 in (30 cm) 12 in (30 cm)
B Clearance to window or door that may be opened
48 in (120 cm) below or to
side of opening; 12 in (30
cm) above opening
36 in (91 cm)
C Clearance to permanently closed window
* *
D
Vertical clearance to ventilated soft located above the terminal within
a horizontal distance of 2 feet from the center line of the terminal
* *
E Clearance to unventilated soft
* *
F Clearance to outside corner
* *
G Clearance to inside corner
* *
H
Clearance to each side of center line extended above meter/regulator
assembly
*
36 in (91 cm) within a height
15 ft (4.57 m) above the
meter/ regulator assembly
I Clearance to service regulator vent outlet
* 36 in (91 cm)
J
Clearance to non-mechanical air supply inlet to building or the combus-
tion air inlet to any other appliance
48 in (120 cm) below or to
side of opening; 12 in (30
cm) above opening
36 in (91 cm)
K Clearance to a mechanical air supply inlet
36 in (91 cm) above if with-
in 10 ft (3 m) horizontally
6 ft (1.83 m)
L
Clearance above paved sidewalk or paved driveway located on public
property
* 7 ft (2.13 m) †
M Clearance under veranda, porch, deck, or balcony
* 12 in (30 cm) ‡
Clearance Requirements from Vent Terminations to Building Openings
<When supplying combustion air from the indoors (Non-Direct Vent)>
1 In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code.
2 In accordance with the current CSA B149.1 Natural Gas and Propane Installation 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.
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier. Clearance to opposite wall is 24 inches (60 cm).