Whirlpool W10100920D 规格指南

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Provide maximum back pressure, based on the maximum 
rated vent length shown in the Installation Instructions 
included with dryer. Maximum Allowable Back Pressure chart 
lists maximum rated vent length and back pressure.

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The minimum duct air velocity during normal operating 
conditions should be at least 1,200 FPM (feet per minute) to 
keep lint moving through the vent. (In a 4" (102 mm) diameter 
pipe, this requires at least 105 CFM of air flow.)

Back pressure should be measured with an empty dryer, a clean 
lint screen and with the dryer operating in the Air Only cycle 

 

(no heat). Use an inclined manometer, such as Dwyer model 

 

102 (0"-2" [0 mm - 51 mm] range) or Dwyer model 172 

 

(0"-1" [0 mm - 25 mm] range) to measure the Back Pressure. 

 

See the following illustration.

Single dryer venting systems are defined as systems that have 
only one dryer unit attached to a residential-type 4" (102 mm) 
diameter rigid metal vent system. For single dryer venting 
systems, see the Installation Instructions for the specific dryer 
model being used or considered to determine the allowable length 
and number of elbows for the venting system. 

Additional Elbows
In cases in which the Installation Instructions do not address the 
vent length for the specific number of elbows required for a 
particular application, the following calculations may be used. 
(The total vent system length includes all straight and curved 
portions of the vent system.):

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For 90° elbows, reduce the allowable vent system length by 
10 ft (3.05 m). 

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For 45° elbows, reduce the allowable vent system length by 
6 ft (1.83 m).

For example, if the Installation Instructions state that a dryer is 
allowed 40 ft (12.2 m) of total vent length with two 90° bends, and 
the installation requires three 90° bends, the total allowable vent 
length would be reduced by 10 ft (3.0 m) (from 40 ft [12.2 m] to 
30 ft [9.1 m]).
Dryer Airflow
The airflow of a dryer depends on the design of the exhaust vent. 
Each dryer model has a maximum rated vent length, shown in the 
product literature that is supplied with each model, or on the 
Whirlpool.com website. The exhaust airflow of any Whirlpool 
produced dryer at the maximum rated vent length is at least 

 

105 CFM. The maximum airflow is 230 CFM. This includes 
standard vent and long vent dryer models.
Codes Agency Approvals
All Whirlpool electric dryer models, including “long vent dryers,” 
Turbo Vent™ dryers and combo washer/dryer units that are sold 
in the United States and Canada are UL listed (reference UL 2158 
standard), and all Whirlpool gas dryer models are CSA listed 
(reference ANSI Z21.5.1 standard). These standards require 
testing at the maximum-rated exhaust vent conditions that are 
published in the product literature for each individual model. The 
designation for the UL or CSA listing can be found on or adjacent 
to the serial label on the product.
Dryer Closet Installations
Closets used for dryer installation must provide multiple openings 
to allow air to flow through the dryer and around the dryer to 
dissipate heat. Any dryer enclosure or room that does not have an 
inlet and outlet for an operating forced air HVAC system is 
considered a closet, and requires room venting. The room venting 
can be installed into the walls of the dryer enclosure, as well as 
the door, provided it will not be blocked after the dryer is installed. 
Refer to the product literature for minimum clearances between 
the product and the enclosure surfaces. Refer to ANSI Z21.5.1 
section 2.14.1.
Recommended room venting and spacing 

 

*Required spacing
Installation spacing for recessed area or closet
The dimensions shown are for the minimum spacing allowed.

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Additional spacing should be considered for ease of 
installation and servicing.

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Additional clearances might be required for wall, door, and 
floor moldings.

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Additional spacing of 1" (25 mm) on all sides of the dryer is 
recommended to reduce noise transfer.