3 Installation
3.1 To Do Before the Installation
Caution
This is a cord-connected product. Do not
try to field wire the product. Tampering with
the electrical enclosure voids the UL mark-
ing and the manufacturer’s warranty.
3.1.1 To Calculate the Duct Run
This product is able to overcome equivalent duct lengths up to 125 feet (38 meters) on duct systems with 4 inch (102mm) diameter
galvanized, steel ducts. It is also able to hold an air velocity of 1200 fpm (6.10 m/s).
To calculate the length of your planned duct system, measure from the dryer to the external release point in the roof or the wall. For
each 45° elbow, add 2–1/2 feet (0.76 meters) to your total duct system calculations. Add 5 feet (1.5 meters) for every 90° elbow.
Use the table below to determine the length of duct this product can be used with at specified elevations:
Elevation in feet (meters) Maximum Equivalent Duct length in feet (meters)
Sea Level 125 (38)
2000 (610) 114 (35)
4000 (1219) 106 (32)
6000 (1829) 98 (30)
8000 (2438) 92 (28)
10,000 (3048) 85 (26)
12,000 (3658) 80 (24)
3.1.2 To Select the Product Location
Caution
To prevent damage to the dryer or to the product, do not install the DEDPV-705, #499195 within 5 linear feet
(1.5 linear meters) or further than 40 linear feet (12 linear meters) from the dryer outlet.
Note:
If the product is installed less than 15 feet (4.6 meters) from the dryer outlet, install a secondary lint trap between the dryer and
the product.
Note:
Stretch flex ducting is not allowed for clothes dryer exhaust applications.
Fantech recommends using a Mounting Bracket (included) to install the product to a rafter or a joist. A vertical rigid duct may be
used to hold the product if the duct is safely stabilized (refer to local codes prior to supporting the product in the duct alone). Refer to
section 5.1 To Maintain the Product for inspection recommendations.
Correctly seal all duct connections to prevent leakage and loss of product performance.
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