Williams 2903511 Manual De Usuario
Installation
Installation should be done by a QUALIFIED SERVICE TECHNICIAN.
The furnace must be located on an outside wall.
WARNING: For the installation of this furnace, the
following items must be used as a vent air intake
system:
Wall Installation
Minimum clearances from combustible materials:
External Vent Cap
• Furnace to the top surface of carpeting, tile:
(Part Number: WFR–TRM000)
2-inches (50 mm)
Flanged Air Inlet Tube
• Furnace to back wall (0” to spacers):
(Part Number: WFR–TBO002)
0-inch (0 mm).
O-Ring
• Vent to wall enclosure:
(Part Number: WFN–RNG003)
0-inch (0 mm)
Flue Outlet Tube
• Furnace to sidewalls:
(Part Number: WFR-795)
3.15-inches (80 mm)
• Furnace to ceiling:
(All the above items are supplied with the furnace)
10-inches (254 mm)
See Figure 1 showing clearance for installation of vent cap.
Leave at least three-feet in front of the wall furnace for servicing and proper operation. The wall furnace must be installed in such
a way that the external casing can be completely removed for servicing.
If there is a shelf above the furnace, it must be be noncombustible. A minimum clearance of 12-inches (300 mm) is
recommended between the furnace and the noncombustible shelf above it.
Gas equipment in residential garages must be installed so that all burners and burner ignition devices are located not less than
18-inches (460 mm) above the floor. Such equipment must be located, or protected, so it is not subject to physical damage by a
moving vehicle.
The vent terminal of this direct-vent furnace must be located at least 9-inches (230 mm) from any opening through which flue
gases could enter a building. The bottom of the vent terminal and the air intake must be located at least 12-inches (300mm)
above grade.
DO NOT cover the furnace.
Make sure that the correct gas supply is available.
The furnace requires a 120V, 60 Hz electrical supply.
The furnace must be electrically grounded in accordance with local codes or in the absence of local codes, with the National
Electrical Code ANSI/NFPA 70 (latest edition) or in Canada with CAN/CSA-C22.2 No. 3.
Leave at least three-feet in front of the wall furnace for servicing and proper operation. The wall furnace must be installed in such
a way that the external casing can be completely removed for servicing.
If there is a shelf above the furnace, it must be be noncombustible. A minimum clearance of 12-inches (300 mm) is
recommended between the furnace and the noncombustible shelf above it.
Gas equipment in residential garages must be installed so that all burners and burner ignition devices are located not less than
18-inches (460 mm) above the floor. Such equipment must be located, or protected, so it is not subject to physical damage by a
moving vehicle.
The vent terminal of this direct-vent furnace must be located at least 9-inches (230 mm) from any opening through which flue
gases could enter a building. The bottom of the vent terminal and the air intake must be located at least 12-inches (300mm)
above grade.
DO NOT cover the furnace.
Make sure that the correct gas supply is available.
The furnace requires a 120V, 60 Hz electrical supply.
The furnace must be electrically grounded in accordance with local codes or in the absence of local codes, with the National
Electrical Code ANSI/NFPA 70 (latest edition) or in Canada with CAN/CSA-C22.2 No. 3.
WARNING: The nearest point of the vent cap should be a minimum horizontal distant of six (6) feet (1,830 mm)
from any pressure regulator. In case of regulator malfunction, the six (6) feet (1,830 mm) distance will reduce
the chance of gas entering the vent cap.
from any pressure regulator. In case of regulator malfunction, the six (6) feet (1,830 mm) distance will reduce
the chance of gas entering the vent cap.
4