Installation guide

66840/035-20003-001 Rev. B (1205)
VENT CLEARANCES
OPERABLE
FIXED
CLOSED
[] VENT TERMINAL
(_) AIR SUPPLY
[] AREA WHERE TERMINAL IS NOT PERMITTED
FIGURE 27: 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, I0,000 Btuh (3kW), 8 inches (15 cm) for applications lg,000 Btuh (3kW),
B. Clearance to window or door that may be opened I2 inches (30 cm) for appfiances > 10,000 Btuh (3kW) 9 inches (23 cm) for appliances > 10,000 Btuh (3kW)
and _ 100,000 Btuh (30kW), 36 inches (91 cm) and 5g,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
F 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 I5 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 < I0,000 Btuh (3kW), 6 inches (15 cm) for applications < 10,000 Btuh (3kW),
J Clearance to nonmechanical air supply inlet to building I2 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)
K. Clearance to a mechanical supply inlet 6 feet (I .83 m) 3 feet (9I cm) above if within 10 feet (3 cm) hodzontally
L. Clearance above paved sidewalk or paved driveway located on public property 7 feet (2.13 m) t
M Clearance under veranda, porch, deck. or balcony I2 inches (30 cm) $
Dryer Vent 3 ft (91.44 cm) 3 ft. (91 44 cm)
Plumbing Vent Stack 3 ft (91.44 cm) 3 ft. (91 44 cm)
Gas Appliance Vent Terminal 3 [t. (9I .44 cm) * 3 ft. (91 44 cm) *
Vent Termination from any Building Surface 12" (30.4 cm) 12" (304 cm)
Above Any Grade Level 12" (30.4 cm) 12" (304 cm)
Above anticipated snow depth 12" (30.4 cm) 12" (304 cm)
Any forced air inlet to the building 10 ft. (304.8 cm) 10 ft (3048 cm)
The vent shall extend above the highest point where it passes through the roof, 18" (48 cm) 18" (46 cm)
not less than
Any obstruction within a horizontal distance Not less than 18" (46 cm) Not less than 18" (46 cm)
1 In accordance with the current CSA B149 1-00, Natural Gas and Propane Installation Code
2 In accordance with the current ANSI Z223.1 / NFPA 54, National Gas Code.
1- A vent shalI not terminate directty 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 tocal 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 instaIlation instructions for a special venting system
* Does not apply to multipte installations of this furnace model Refer to "VENTING MULTIPLE UNITS" in this section of these instructions
IMPORTANT: Consideration must be given for degradation of buiIding materials by flue gases. Sidewatt termination may require sealing or shielding of buitding surfaces
with a corrosion resistant materiai 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 buitding surfaces If a metal shieId is used it must be a stainless steet matedai at a minimum
dimension of 20 inches It is recommended that a retaining type collar be used that is attached to the buiIding surface to prevent movement of the vent pipe.
Responsibility for the provision of proper adequate venting and air supply for application shaII 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 17