Table of Contents
Advertisement
98618/035-20009-001
Rev. B (1205)
............ i ,--
/
"\.
FIXED
CLOSED
\"_
OPERABLE
[]
VENT TERMINAL
_
AIR SUPPLY
AREA WHERE TERMINAL
IS NOT PERMITTED
FIGURE 20: Home Layout
Canadian
Installations I
US Installation 2
A. Clearance
above grade, veranda,
porch, deck, or balcony
12 inches (30 cm)
12 inches (30 cm)
6 inches (15 cm) for applications
< 10,000 Btuh (3kW),
6 inches (15 cm) for applications
< 10,000 Btuh (3kW),
12 inches (30 cm) for appliances
> 10,000 Btuh (3kW)
9 inches (23 cm) for appliances
> 10,000 Btuh (3kW)
B. Clearance
to window
or door that may be opened
and _ 100,000 Btuh (30kW), 36 inches (91 cm)
and _ 50,000 Btuh (15kW),
12 inches (30 cm)
for appliances
> 100,000 Btuh (30kW)
for appliances
> 50,000 Btuh (30kW)
C. Clearance
to permanently
closed window
D. Vertical clearance
to 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 unventilated
soffit
R Clearance
to outside corner
G. Clearance
to inside corner
H. Clearance
to each side of center line extended
3 feet (91 cm) within a height 15 feet (4.5 m) above the
above meter/regulator
assembly
meter/regulator
assembly
I. Clearance
to service regulator vent outlet
3 feet (91 cm)
6 inches (15 cm) for applications
< 10,0go Btuh (3kW),
6 inches (15 cm) for applications
< 10,go0 Btuh (3kW),
J. Clearance
to nonmechanical
air supply inlet to building
12 inches (30 cm) for appliances
> 10,000 Btuh (3kW)
9 inches (23 cm) for appliances
> 10,000 Btuh (3kW)
or the combustion
air inlet to any other appliance
and < 100,000 Btuh (30kW), 36 inches (91 cm)
and < 50,000 Btuh (15kW),
12 inches (30 cm)
for appliances
> 100,000 Btuh (30kW)
for appliances
> 50,000 Btuh (30kW)
6 feet (1.83 m)
3 feet (91 cm) above if within 10 feet (3 cm) horizontally
K. Clearance
to a mechanical
supply inlet
_. Clearance
above paved sidewalk or paved driveway
located on public property
M. Clearance
under veranda,
porch, deck, or balcony
Dryer Vent
Plumbing Vent Stack
Gas Appliance
Vent Terminal
Vent Termination
from any Building Surface
Above Any Grade Level
Above anticipated
snow depth
Any forced air inlet to the building.
The vent shall extend above the highest point where it passes through the roof,
not less than
Any obstruction
within a horizontal
distance
1.
In accordance
with
the current
CSA
B149.1-00,
Natural
Gas
and
2.
In accordance
with
the current
ANSI
Z223.1
/ NFPA
54, National
7 feet (2.13 m) 1
12 inches (30 cm) _
3 ft. (91.44 cm)
3 ft. (91.44 cm)
3 ft. (91.44 cm)
3 ft. (91.44 cm)
3 ft. (91.44 cm) *
3 ft. (91.44 cm) *
12" (30.4 cm)
12" (30.4 cm)
12" (30.4 cm)
12" (30.4 cm)
12" (30.4 cm)
12" (30.4 cm)
10 ft. (304.8 cm)
10 ft. (304.8 cm)
18" (46 cm)
18" (46 cm)
Not less than 18" (46 cm)
Not less than 18" (46 cm)
Propane
Installation
Code.
Fuel
Gas
Code.
1" 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 clearance not specified
in ANSI Z223.1 / NFPA
54 or CSA B149.1-00.
Clearance
in accordance
with local installation
codes and the requirements
of the gas supplier and the manufacturer's
Installation
Manual.
Any fresh air or make up inlet for dryer or furnace area is considered
to be forced air inlet.
Avoid areas where condensate
drippage may cause problems such as above planters, patios, or adjacent
to windows where steam may cause fogging.
A terminus of a vent shall be either:
Fitted with a cap in accordance
with the vent manufacturer's
installation instructions,
or In accordance with the installation
instructions
for a special venting system.
* Does not apply to multiple installations
of this furnace model. Refer to "VENTING
MULTIPLE UNITS" in this section of these instructions.
IMPORTANT: Consideration
must be given for degradation
of building materials by flue gases. Sidewall termination
may require sealing or shielding of building surfaces
with a corrosion
resistant material to protect against combustion
product corrosion.
Consideration
must be given to wind direction in order to prevent flue
products and/or condensate
from being blown against the building surfaces.
If a metal shield is used it must be a stainless steel material at a minimum
dimension
of 20" (50.8 cm). It is recommended
that a retaining type collar be used that is attached to the building surface to prevent movement
of the vent
pipe.
Responsibility
for the provision of proper adequate venting and air supply for application
shall rest with the installer.
Vent shall extend high enough above building, or a neighboring
obstruction,
so that wind from any direction will not create a positive pressure in the vicinity of the vent.
Unitary Products Group
15
Advertisement
Table of Contents
