COPYRIGHT
_
DRI-EAZ PRODUCTS, INC. 1997
6
0° F
-18° C
$ 1.99
$ 5.98
SETUP AND USE
Operate the Dri-X Airchanger in a room or
building being dried in much the same way as a
refrigerant or desiccant dehumidifier.
Measure Indoor and Outdoor Conditions
Using a thermo-hygrometer (like the DHT-200
or the DHT-600), read the temperature and the
relative humidity both indoors and outdoors. Con-
vert both sets of readings to grains per pound. The
outdoor reading must be LOWER (fewer grains
per pound) than the indoor reading. This means
that the outdoor air is drier, and the Dri-X Air-
changer will operate as designed.
To convert temperature and relative humidity to
grains per pound (commonly called specific hu-
midity or the humidity ratio), use the Dri-X Air-
changer Water Removal Calculator included with
the machine. You may also use any psychrometric
chart, or the Dri-Eaz Psychrometric Calculator.
The drier the outdoor air is (fewer grains per
pound), the faster the Dri-X will reduce indoor
humidity. If the outdoor and indoor air grains per
pound figures are equal, then outdoor and indoor
air are equally dry – they hold the same amount of
water vapor. In this case the Dri-X will continue to
clean the indoor air, but will not dehumidify it. If
the outdoor air is "wetter" (more grains per
pound), the Dri-X will actually increase the indoor
humidity, so it should not be used.
Position the Dri-X
Operate the unit in an enclosed area, with
doors, windows, and other openings to the outside
closed. However, open all interior doors through-
out the area being dried.
Maintain good airflow with TurboDryers in the
entire drying area. High-volume and high-velocity
airflow will both raise the rate of evaporation, and
help mix the air being drawn into the Dri-X and
expelled to the outdoors.
Caution
When operating a DrizAir Airchanger on a hard-
wood floor, it is suggested that the floor surface be
protected due to possible minor leakage from the
unit.
The incoming airstream blows into the room
from the lower vent on the end of the Dri-X with
the large handle, marked "Fresh Air to Room."
This airstream can be pointed toward especially
wet areas. It can also be ducted to speed drying in
other rooms or areas.
Humid air is drawn into the Airchanger from
the room through the upper vent on the end of the
unit with the large handle, marked "Humid Air
From Room."
Keep all vents clear of any blockage or restric-
tion of free airflow, for example from draperies.
Attach Ducting
The upper vent on the wheeled end of the Dri-
X is marked "Fresh Air from Outdoors," and the
lower vent on the same end is marked "Humid Air
to Outdoors." These two vents must be attached by
ducting to a source of outdoor air (see photo).
Attach 5-inch insulated ducting to the two
vents. Reach into one end of the ducting, and pull
out the inner duct made of vinyl with a wire core.
Tuck the ends of the black plastic outer cover
around the fiberglass insulation. Over this, slip one
of the 5-inch hose clamps provided. Slide the as-
sembly onto the vent and tighten the clamp.
Two 25-foot lengths of ducting are included
with the unit. Equivalent additional ducting, com-
mon in HVAC applications, is available at hard-
ware stores. Use insulated ducting to avoid sweat-
ing and condensation. (The colder the air outdoors
is, the more that condensation may occur.)
