Camus Hydronics DynaMax DMH201 Installation And Service Manual page 19

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In accordance with ANSI Z223.1/ NFPA 54 National Fuel Gas Code
α
A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings
and serves both dwellings
β
Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* For clearances not specified in ANSI Z223.1/ NFPA 54 or CSA-B149.1. Clearance in accordance with local installation
codes and the requirements of the gas supplier
Other than Direct Vent Terminal Clearances
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
Vertical clearance to ventilated soffit located above the terminal
D within a horizontal distance of 2 ft (61cm) from the center line of
the terminal.
E Clearance to unventilated soffit
F Clearance to outside corner
G Clearance to inside corner
Clearance to each side of center line extended above
H
meter/regulator assembly
I Clearance to service regulator vent outlet
Clearance to non-mechanical air supply inlet to building or the
J
combustion air inlet to any other appliance
K Clearance to a mechanical air supply inlet
Clearance above paved sidewalk or paved driveway located on
L
public property
M Clearance under veranda, porch deck, or balcony
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In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code
2
In accordance with ANSI Z223.1/ NFPA 54 National Fuel Gas Code
α
A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings
and serves both dwellings
β
Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* For clearances not specified in ANSI Z223.1/ NFPA 54 or CSA-B149.1. Clearance in accordance with local installation
codes and the requirements of the gas supplier
1
Canadian Installations
12" (30 cm)
6" (15 cm) for appliances <10,000
Btuh (3kW)
12" (30cm) for appliances
>10,000 Btuh (3kW) and ≤
100,000 Btuh (30kW)
36" (91cm) for appliances
>100,000 Btuh (30kW)
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3 ft (91 cm) within a height of 15 ft
(4.6 m) above the meter/ regulator
assembly
3 ft (91 cm)
6" (15 cm) for appliances <10,000
Btuh (3kW)
12" (30 cm) for appliances
>10,000 Btuh (3kW) and
<100,000 Btuh (30 kW)
36" (91cm) for appliances
>100,000 Btuh (30kW)
6 ft (1.83 m)
α
7 ft (2.13 m)
β
12" (30 cm)
2
US Installations
12" (30 cm)
4 ft. (1.2 m) below or to side of
opening; 1 ft (300 mm) above
opening
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4 ft (1.2m) below or to side of
opening; 1 ft (300 mm
3 ft (91 cm) above if within 10 ft (3
m) horizontally
7 ft (2.13 m) for mechanical draft
systems (Category I appliances).
Vents for Category II and IV
appliances cannot be located
above public walkways or other
areas where condensate or vapor
can cause a nuisance or hazard.
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