Navien NHB H Series, Инструкция по установке и эксплуатации

Страница: 89 / 143

89 Installing a Common Vent System
Indirect Venting
Ref Description
Canadian Non-Direct
Vent Installations
1
US Non-Direct Vent
Installations
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 36 in (91 cm)
48 in (120 cm) below or
to side of opening; 12 in
(30 cm) above opening
C Clearance to permanently closed window 12 in (30 cm)* 12 in (30 cm)*
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
3 ft (91 cm)* 3 ft (91 cm)*
E Clearance to unventilated soffit 3 ft (91 cm)* 3 ft (91 cm)*
F Clearance to outside corner 2 ft (61 cm)* 2 ft (61 cm)*
G Clearance to inside corner 12 in (30 cm)* 12 in (30 cm)*
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
3 ft (91 cm) within a
height of 15 ft (4.6 m)*
I Clearance to service regulator vent outlet 36 in (91 cm) 3 ft (91 cm)*
J
Clearance to non-mechanical air supply inlet to
building or the combustion air inlet to any other
appliance
36 in (91 cm)
48 in (120 cm) below or
to side of opening; 12 in
(30 cm) above opening
K Clearance to a mechanical air supply inlet 6 ft (1.83 m)
36 in (91 cm) above
if within 10 ft (3 m)
horizontally
L
Clearance above paved sidewalk or paved driveway
located on public property
7 ft (2.13 m)
†
7 ft (2.13 m)
†
M Clearance under veranda, porch deck, or balcony 12 in (30 cm) ‡
12 in (30 cm) - open on
3 sides*
1 In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code
2 In accordance with the 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.
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* Suggested minimum clearances by the manufacturer. If the clearances required by the local authority or gas supplier are
different from those from the table above, the greater clearance should apply.