Whirlpool 211454 User Manual

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10
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)-latest 
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 person.
Drafthood Installation
Align the legs of the drafthood with the slots provided. 
Insert the legs and secure the drafthood to the water 
heater’s top with the four screws provided as shown in 
Figure 9. Do not alter the drafthood in any way. If you are 
replacing an existing water heater, be sure to use the new 
drafthood supplied with the water heater.
Figure 9
Drafthood Installation
Sheet Metal Screws (four provided)
Drafthood
Jacket top
Install the drafthood with
the four screws provided.
Legs
Slots
Slots
Legs
Vent Pipe Size
 
It is important that you follow the guidelines in these 
instructions for sizing a vent pipe system. If a transition to 
a larger vent size is required, the vent transition connection 
must be made at the drafthood outlet.
Vent Connectors
1.  Type B, Double wall, U.L. Listed Vent Pipe.
2.  Single wall Vent Pipe.
Maintain the manufacturer’s specified minimum clearance 
from combustible materials when using type B double wall 
vent pipe.
Vent connectors made of type B, double wall vent pipe 
material may pass through walls or partitions constructed 
of combustible material if the minimum listed clearance is 
maintained.
Maintain a six inch minimum clearance from all combustible 
materials when using single wall vent pipe.
IMPORTANT: Single wall vent pipe cannot be used for 
water heaters located in attics and may not pass through 
attic spaces, crawl spaces or any confined or inaccessible 
location. A single wall metal vent connector cannot pass 
through any interior wall.
When installing a vent connector, please note the following:
• 
Install the vent connector avoiding unnecessary bends, 
which create resistance to the flow of vent gases.
• 
Install without dips or sags with an upward slope of at 
least 1/4-inch per foot.
• 
Joints must be fastened by sheet metal screws or other 
approved means. It must be supported to maintain 
clearances and prevent separation of joints and 
damage.
• 
The length of the vent connector cannot exceed 75% of 
the vertical vent height.
• 
The vent connector must be accessible for cleaning, 
inspection, and replacement.
• 
Vent connectors cannot pass through any ceiling, floor, 
firewall, or fire partition.
IMPORTANT: Existing vent systems must be inspected for 
obstructions, corrosion, and proper installation.