Vent Clearances - Empire Comfort Systems MILLIVOLT DVD32FP30N-3 Installation Instructions Manual

Canadian Installations1
A= Clearance above grade, 12 in (30 cm)
veranda, porch, deck,
or balcony
B= Clearance to window or 12 in (30 cm) for
door that may be open appliances > 10,000
Btuh (3 kW) and ≤
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 outside 6 in (15 cm)
corner
G= Clearance inside corner 9 in (23 cm)
H= Clearance to each side 3 ft (91 cm) within a
of center line extended height 15 ft (4.5 m)
above meter/regulator above the meter/
assembly regulator assembly
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 will not be held
responsible for heat damage caused from terminating under vinyl
overhangs, vinyl ceilings or vinyl ventilated/unventilated soffits.
38713-5-1019

VeNt clearaNces

Figure 37
US Installations2
12 in (30cm) I= Clearance to service
9 in (23 cm) for J= Clearance to
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) K= Clearance to a
24 in (61 cm) L= Clearance above paved
12 in (30 cm) M= Clearance under
6 in (15 cm) 1
9 in (23 cm) 2
3 ft (91 cm) †
‡
*
Clearance in accordance with local installation codes and the requirements of the
gas supplier.
Canadian Installations1
3 ft (91 cm)
regulator vent outlet
12 in (30 cm) for
nonmechanical air appliances > 10,000
supply inlet to building Btuh (3 kW) and ≤
or the combustion 100,000 Btuh (30 kW)
air inlet to any other
appliance
6 ft (1.83 m)
mechanical air
supply inlet
7 ft (2.13 m) †
sidewalk or paved
driveway located on
public property
12 in (30 cm) ‡
veranda, porch
deck, or balcony
In accordance with the current CSA B149.1, Natural Gas and Propane
Installation Code
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:
US Installations2
3 ft
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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