Thermal Solutions AMP 1000, Installation, Operation And Maintenance Manual

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27
VII . Venting
(continued)
Table 17: Other than Direct Vent Terminal Clearances
Canadian Installations
1
US 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
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)
4 ft (1.2 m) below or to side of
opening; 1 ft (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 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 * *
H
Clearance to each side of center
line extended above meter/regulator
assembly
* *
I
Clearance to service regulator vent
outlet
Above a regulator within 3 ft (91
cm) horizontally of the vertical
center line of the regulator vent
outlet to a maximum vertical
distance of 15 ft (4.5 m)
*
J
Clearance to nonmechanical air
supply inlet to building or the
combustion air inlet to any other
appliance
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)
4 ft (1.2 m) below or to side of
opening; 1 ft (300 mm) above
opening
K
Clearance to a mechanical air
supply inlet
6 ft (1.83 m)
3 ft (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) ‡ *
* 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