COPYRIGHT © 1999 2000 DRI EAZ PRODUCTS INC
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In other cases, place the dehumidifier in a separate area
and duct the dry air to the damp area, for example, when
attempting to dry an attic or a crawl space under a building.
Operate the dehumidifier inside the building and duct the dry
air directly into the attic or crawl space.
When drying an area with no inside access, it is some-
times possible to vent dry air through a heat or ventilation
register opening. To do this, direct the process air duct into a
register and temporarily disconnect any ducting so the dry
air is released into the area to be dried.
The DriTec has two process output vents. This allows
ducting into two areas at one time, or leaving one vent open
to the room while ducting the other to a second area.
Air Intake Clearance
Allow at least 7" clearance between the air intake (on the
back of the unit) and any wall. Never allow any materials,
such as draperies, to obstruct the air inlet or outlets. This
could cause the unit to overheat and result in a fire or elec-
trical hazard.
Air Circulation
A desiccant dehumidifier operating in an area such as a
basement will have little effect in drying an adjacent en-
closed area, such as a closet, unless there is adequate circu-
lation of air in and out of the adjacent area. Open interior
doors and operate Dri-Eaz TurboDryers to maintain good air
movement. Doors may need to be braced to prevent them
from closing as a result of air movement. In the case of indi-
vidual rooms being dried, all doors and windows should be
kept closed.
There are times when you will want to use special tech-
niques to reduce the volume of airspace to be dried. These
techniques will be advantageous when drying dense materi-
als such as hardwood flooring. They are especially helpful
when these materials are located in a high air volume struc-
ture such as a gymnasium. The basis of this technique is to
reduce the amount of air space around the wet materials so
the volume of air to be dried is reduced.
One method is to make a plastic tent over the wet materi-
als, then direct the dry process air under the plastic tent. Use
4-6 mil plastic taped over the area. Leave two openings: one
for the process airflow and another opening on the opposite
side for damp air to escape. The amount of airspace between
the surface of the wet materials and the plastic will vary de-
pending on the size of the area. The wet materials are dried
while minimizing dehumidification and energy use.
Duct Connections
This unit is designed to be operated with ducting. Duct-
ing is used both to carry the wet reactivation air away out of
the structure and to vent the dry process air to particularly
wet areas. There are several different ways to use the ma-
chine and ducting.
Caution!
Because air conditions inside ducting can reach temperatures
of 150°F (66°C), use only appropriately rated ducting.
Process Outlet Ducting
When drying an area such as a room it is not necessary to
use ducting on the process out (dry air). In this case, the de-
humidifier will vent dry air directly from the machine into
the room. In some instances, however, you may want to di-
rect the airflow towards a specific area. This can be done
using the process out ducting, available from hardware
stores or from Dri-Eaz Products. The duct outlet can be lo-
cated near a slow drying piece of furniture or section of wall
or flooring to achieve faster
drying of that area.
The double process output vents allow for two ducts run-
ning from the machine, or one duct opening into the room
while the other is ducted to another area. Use 5-inch ducting
rated for temperatures of 150°F (66°C) or above.
A slide lever can be used to close the right-hand outlet
partially or completely. Use this to balance airflow when
ducting from just one outlet. Normally, duct from the left-
hand outlet (no slide lever), and adjust the other that is
venting into the room.
Reactivation Outlet Ducting
The wet reactivation air should always be vented via
ducting to the outside. There are several methods of locating
the react duct outlet to vent outdoors. The simplest method is
to attach it to a clothes dryer vent.
If a dryer vent is not available, you can fashion your own
window connection panel that permits the duct to vent
through an open window. A handy window connection kit
called the TecVent will be available from Dri-Eaz in the fall
of 1999.
Caution!
Never
allow condensate water which may collect in the
reactivation duct during operation to run back into the unit.
This could cause a shock hazard or damage to the unit. Keep
at least part of the ducting lower than the reactivation outlet
at all times.
Condensation may occur inside reactivation ducting un-
der cold ambient conditions. Avoid any bends or sags where
water can collect in the ducting. Keep part of the ducting
lower that the reactivation outlet on the back of the unit, to
prevent condensed water from running back into the unit.
If enough condensed water collects and blocks the air
flow, the unit can shut itself down.
Ducting Length
The amount of air flow through the react and process
ducting is dependent upon its diameter, length, interior wall
surface conditions and configurations. For this reason, the
length of ducting which can be used with the desiccant is
determined by the type of ducting, and the number of bends
or curves in the ducting.
The less restricted the airflow, the better the perform-
ance of the unit
. It is not recommended that you use over 30
ft. of straight run process air ducting and not over 60 ft. of
straight run react air ducting. When using over 20 ft. of react
air ducting, condensation which can collect in bends or when
the ducting is in contact with cool surfaces, can become a
problem. The opportunity for condensate to collect in the
