Vent Clearances - Empire Heating Systems PVS18N-3 Owner's Manual And Installation Instructions

Canadian Installations1
A= Clearance above 12-in (30cm)
grade, veranda, porch,
deck, or balcony
B= Clearance to window or 6-in (15cm) for appli-
door that may be open ances ≤ 10,000 Btuh
(3kW), 12-in (30cm) for
appliances > 10,000
Btuh (3kW) and ≤
100,000 Btuh (30kW),
36-in (91cm) for appli-
ances > 100,000 Btuh
(30kW)
C= Clearance to
permanently 12-in (30cm)
closed window
D= Vertical clearance
ventilated soffit located
above the terminal within
12-in (30cm)
a horizontal distance of
2 feet (61 cm) from the
center line of the terminal
E= Clearance to
unventilated 12-in (30cm)
soffit
F= Clearance to
12-in (30cm)
outside corner
G= Clearance
12-in (30cm)
inside corner
H= Clearance to each side 3ft (91cm) within a
of center line extended height 15ft (4.5m)
above meter/regulator above the meter/regula-
assembly tor 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 Inc. will not be
held responsible for heat damage caused from terminating under
vinyl overhangs, vinyl ceilings or vinyl ventilated/unventilated soffits.
37873-0-0217
WALL FURNACE INSTALLATION

VENT CLEARANCES

US Installations2
12-in (30cm)
6-in (15cm) for appli-
ances ≤ 10,000 Btuh
(3kW), 9-in (23cm) for
appliances > 10,000
Btuh (3kW) and ≤
50,000 Btuh (15kW),
12-in (30cm) for appli-
ances > 50,000 Btuh
(15kW)
12-in (30cm)
12-in (30cm)
12-in (30cm)
12-in (30cm)
12-in (30cm)
3ft (91cm)
I= Clearance to service
regulator vent outlet
J= Clearance to nonme-
chanical air supply
inlet to building or the
combustion air inlet to
any other appliance
K= Clearance to a
mechanical air
supply inlet
L= Clearance above
paved sidewalk or
paved driveway
located on public
property
M= Clearance under
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 mini-
mum 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.
Figure 38
Canadian Installations1 US Installations2
3ft (91cm) 6ft
6-in (15cm) for appli- 6-in (15cm) for appli-
ances ≤ 10,000 Btuh ances ≤ 10,000 Btuh
(3kW), 12-in (30cm) for (3kW), 9-in (23cm) for
appliances > 10,000 appliances > 10,000
Btuh (3kW) and ≤ Btuh (3kW) and ≤
100,000 Btuh (30kW), 50,000 Btuh (15kW),
36-in (91cm) for appli- 12-in (30 cm) for appli-
ances > 100,000 Btuh ances > 50,000 Btuh
(30kW) (15kW)
3ft (91cm) above if
6ft (1.83m) within 10ft (3m)
horizontally
7ft (2.13m) † 7ft (2.13m) †
12-in (30cm) ‡ 12-in (30cm) ‡
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