Sears 153.33262 Manual De Usuario

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19
FIGURE 18.
Vent Pipe System                                              
This water heater uses a non-direct, single-pipe vent system to 
remove exhaust gases created by the burning of fossil fuels. Air 
for combustion is taken from the immediate water heater location 
or is ducted in from the outside (see “Combustion Air Supply and 
Ventilation”).
This water heater must be properly vented for the removal of 
exhaust gases to the outside atmosphere. Correct installation of 
the vent pipe system is mandatory for the proper and efficient 
operation of this water heater and is an important factor in the life 
of the unit.
The vent pipe must be installed according to all local and state 
codes or, in the absence of local and state codes, the “National 
Fuel Gas Code”, ANSI Z223.1(NFPA 54)-current edition. The 
vent pipe installation must not be obstructed so as to prevent the 
removal of exhaust gases to the outside atmosphere.
IMPORTANT: The use of vent dampers is not recommended 
by the manufacturer of this water heater. Although some vent 
dampers are certified by CSA International, this certification 
applies to the vent damper device only and does not mean they 
are certified for use on this water heater.
U.L. recognized fuel gas and carbon monoxide (CO) detectors 
are recommended in all applications and should be installed 
using the manufacturer’s instructions and local codes, rules, or 
regulations.
IMPORTANT:  If you lack the necessary skills required to properly 
install this venting system, you should not proceed, but get help 
from a qualified technician.
Draft Hood Installation                                      
 
Installation above 
elevation 5,400 ft. 
(1,646 m) from sea 
level, Reducer Flue 
must be installed on 
40 gallon unit. 
Flat Side Of Hood 
Next To Water 
Connections.
 
Draft Hood
Legs
Legs
Slot
Slot
Top
Install The Draft Hood With The Four Screws Provided.
Screw
Install The Draft Hood With The Four Screws Provided.
50 GAL. UNIT 
40 GAL. UNIT 
Draft Hood
Legs
Screw
Legs
Slot
Top
Slot
Reducer Flue
Flat Side Of Hood 
Next To Water 
Connections.
FIGURE 19.
FIGURE 15.
FIGURE 16.
FIGURE 17.
 
 
All Air From Outdoors: Inlet Air From Ventilated
Crawl Space/Outlet Air To Ventilated Attic
Confined
Space
Outlet Air
to the Attic
1 sq. in. per
4000 BTUH
Inlet Air
from the
Crawl Space
Alternative
Air Inlet
1 sq. in. per
4000 BTUH
Open
Foundation
Vent
s
Gable Vent
to Outdoor
Install Above
Insulation
 
 
 
Gable Vent
to Outdoors
Install Above
Insulation
Confined
Space
All Air from Outdoors Through Ventilated Attic
Outlet Air
to the Attic
1 sq. in. per
4000 BTUH
Inlet Air Duct
1 sq. in. per
4000 BTUH
12” Max.
All Air From Outdoors Using Horizontal Ducts
 
 
 
Confined
Space
Outlet
Outdoor
Air Ducts
Inlet
1 sq. in. per
2000 BTUH
1 sq. in. per
2000 BTUH
All Air From Outdoors - Using A Single Permanent Opening
Confined
Space
1 sq. in. per
3000 BTUH
Alternative 
Opening 
Location