Empire Comfort Systems DVLXG75BP90N-1 Installer's Manual page 19

Canadian Installations (1)
A= Clearance above 12 in (30 cm)
grade, veranda, porch,
deck, or balcony
B= Clearance to 6 in (15 cm) for
window or door that appliances ≤ 10,000
may be open 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)
C= Clearance to 12 in (30 cm)
permanently
closed window
D= Vertical clearance 24 in (61 cm)
ventilated soffit
located above the
terminal within a
horizontal distance of
2 feet (61 cm) from
the center line of the
terminal
E= Clearance to 12 in (30 cm)
unventilated soffit
F= Clearance to 6 in (15 cm)
outside
corner
G= Clearance inside 9 in (23 cm)
corner
H= Clearance to 3 ft (91 cm) within a
each side of center height 15 ft (4.5 m)
line extended above above the meter/
meter regulator regulator assembly
assembly
I= Clearance to 3 ft (91 cm)
service regulator vent
outlet
VENT TERMINATION CLEARANCES (CONT'D)
US Installations (2)
12 in (30cm)
6 in (15 cm) for
appliances
≤ 10,000 Btuh (3
kW), 9 in (23 cm)
for appliances
> 10,000 Btuh (3
kW) and ≤ 50,000
Btuh (15 kW),
12 in (30 cm)
for appliances >
50,000 Btuh
(15 kW)
12 in (30 cm)
24 in (61 cm)
12 in (30 cm)
6 in (15 cm)
9 in (23 cm)
3 ft (91 cm)
6 ft
J= Clearance to non- 6 in (15 cm) for
mechanical appliances
air supply inlet to ≤ 10,000 Btuh (3 kW),
building or the 12 in (30 cm) for
combustion air appliances > 10,000
inlet to any other Btuh (3 kW) and ≤
appliance 100,000 Btuh (30
kW), 36 in (91 cm) for
appliances
> 100,000 Btuh (30
kW)
K= Clearance to a 6 ft (1.83 m)
mechanical air supply
inlet
L= Clearance above 7 ft (2.13 m) †
paved sidewalk or
paved driveway
located on public
property
M= Clearance under 12 in (30 cm) ‡
veranda, porch deck,
or balcony
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.
* For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1,
one of the following shall be indicated
Clearance in accordance with local installation codes and the
requirements of the gas supplier.
ATTENTION: Vinyl Soffit, Vinyl Ceiling, Vinyl Overhang
Disclaimer
Clearances are to heat resistant material (i.e. wood, metal). This does not
include vinyl. Empire Comfort Systems Inc. will not be held responsible
for heat damage caused from terminating under vinyl overhangs, vinyl
ceilings or vinyl ventilated/unventilated soffits.
6 in (15 cm) for
appliances
≤ 10,000 Btuh
(3 kW), 9 in (23
cm) for appliances
> 10,000 Btuh
(3 kW) and ≤
50,000 Btuh (15
kW), 12 in (30
cm) for appliances
> 50,000 Btuh
(15 kW)
3 ft (91 cm) above
if within 10 ft (3 m)
horizontally
7 ft (2.13 m) †
12 in (30 cm) ‡
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