5
This is a cord connected appliance; not intended to be field wired. Accessing or tampering with the electrical enclosure voids
the UL marking and manufacturer’s warranty. Use this product in the manner intended by the manufacturer. For additional
questions, contact Fantech Technical Services.
Installation work and electrical wiring must be done by qualified person(s) in accordance with all applicable codes and standards,
including fire-rated construction.
Dryer exhaust must always be vented to the outdoors.
Calculating Duct Length (STEP 1)
To calculate the length of your planned duct run, measure from the dryer to the external venting point in roof or wall. Add up the total
number of elbows in the exhaust duct. Using the table below, calculate the equivalent duct length of the fittings and add to the
measured duct length.
DRYER EXHAUST DUCT FITTING EQUIVALENT LENGTH
DRYER EXHAUST DUCT FITTING TYPE
EQUIVALENT LENGTH
45-degree elbow
2-1/2 feet
90-degree elbow
5 feet
Source: IRC-2018 Table M1502.4.5.1
Elevation
Max. Eq. Duct Length (ft)
Sea Level
125
2000
114
4000
106
6000
98
8000
92
10,000
85
Fan Mounting Location (STEP 2)
The DEDPV-705 can be mounted a minimum of 5 linear feet, maximum linear 40 ft, down-stream of the dryer outlet connection. If the
DEDPV is installed less than 15 ft downstream of the dryer exhaust, a secondary lint trap is required to be installed between the dryer
and DEDPV. Beyond 15ft, a secondary lint trap is considered optional but recommended for extending routine maintenance intervals.
Figure A.
Mounting the Fan (STEP 3)
A mounting bracket and hardware pack is included and should be used to rigidly mount the fan to a wall stud, rafter, or joist.
Electrical box must be mounted in the vertical plane for correct pressure sensing
Horizontal
Angled
Vertical
Installation
If mounted horizontally, a 1/8 inch weep
hole may need to be drilled in the bottom
of the fan in order to prevent water from
accumulating at the lowest point
