Table 15: Other Than Direct Vent Terminal - Thermal Solutions ARCTIC Series Installation & Operation Manual

Table 15: Other than Direct Vent Terminal Clearances
Clearance above grade, veranda, porch,
A
deck, or balcony
Clearance to window or door that may
B
be opened
Clearance to permanently closed
C
window
Vertical clearance to ventilated soffit
located above the terminal within a
D
horizontal distance of 2 ft (61 cm) 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
H extended above meter/regulator
assembly
Clearance to service regulator vent
I
outlet
Clearance to nonmechanical air supply
J inlet to building or the combustion air
inlet to any other appliance
Clearance to a mechanical air supply
K
inlet
Clearance above paved sidewalk or
L paved driveway located on public
property
Clearance under veranda, porch deck,
M
or balcony
* Clearance in accordance with local codes and the requirements of the gas supplier.
† 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.
Notes:
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
3) If locally adopted installation codes specify clearances different than those illustrated, then the most stringent
clearance shall prevail.
Thermal Solutions, 1175 Manheim Pike, Lancaster, PA 17601 Website: www.thermalsolutions.com
Phone: 717-239-7642 Fax: 877-501-5212 Email: sales@thermalsolutions.com
Canadian Installations
18 in (46 cm)
6 in (15 cm) for appliances ≤ 10,000 Btuh
(3 kW), 12 in (30 cm) for appliances >
10,000 Btuh (3 kW) and ≤ 100,000 Btuh
(30 kW), 36 in (91 cm) for appliances
>100,000 Btuh (30 kW)
*
*
*
*
*
3 ft (91 cm) within a height 15 ft (4.6 m)
3 ft (91 cm)
6 in (15 cm) for appliances ≤ 10,000 Btuh
(3 kW), 12 in (30 cm) for appliances >
10,000 Btuh (3 kW) and ≤ 100,000 Btuh
(30 kW), 36 in (91 cm) for appliances
>100,000 Btuh (30 kW)
6 ft (1.83 m)
7 ft (2.13 m) †
12 in (30 cm) ‡
US Installations
1
12 in (30 cm)
4 ft (1.2 m) below or to side of opening;
1 ft (300 mm) above opening
4 ft (1.2 m) below or to side of opening;
1 ft (300 mm) above opening
3 ft (91 cm) above if within
10 ft (3 m) horizontally
7 ft (2.13 m) for mechanical draft sys-
tems (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
2
*
*
*
*
*
*
*
*
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