Laundry Ventilation Solutions Brochure

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Laundries

While fans of another name may be installed in dryer exhaust applications (at least for now) UL has

announced that all Dryer Exhaust Duct power Ventilators “DEDPV” products manufactured after July 31,

2012 must comply with the new supplemented requirements of UL705 for sale in the US market.

The new UL testing standards for DEDPV products are quite complex and have been adjusted to pertain

exclusively to the operation of ventilation fans in dryer applications. The tests confirm key safety

features and operation, including redundant safety circuits, adequate air velocities, temperature sensing

mechanisms, cleanout access, etc. These tests go well beyond the UL standards that

were once imposed on dryer exhaust fans. And while they may not be required by

building codes yet, eventually most if not all jurisdictions will require the UL marking

for fans used in this application.

Distinguishing features between DEDPVs

and other dryer exhaust fans

Under normal operating conditions, the LED

panel of a DEDPV, which should be prominently

displayed in a laundry room, will illuminate

when the fan is in operation. This steady state

illumination should correspond with the operation

of the dryer for the duration of the cycle.

The primary differences between DEDPVs

and other dryer exhaust fans are:

In the event of a ﬁre in the dryer or exhaust duct,

the fan senses the rise in temperature and shuts

down within 15 seconds, limiting the spread of

ﬁre and damage to the home. The therminal box is

equipped with an integrated pressure switch.

DEDPV fan housings are always made of metal,

never plastic.