Drieaz CMC100 User manual

07-01637F F391-A 2012-01 Warranty 07-01651 1 Dri-Eaz Products, Inc.
Owner’s Manual
CMC100 Dehumidifier
DRI-EAZ PRODUCTS, INC.
15180 Josh Wilson Road, Burlington, WA 98233
Phone: [phone] Fax: [phone] http://cmc-100.dri-eaz.com
The CMC100 automatically controls humidity in confined areas in many types of spaces, including facili-
ties, marine environments and in residential areas such as crawlspaces, attics and basements.
READ AND SAVE THESE INSTRUCTIONS
Read and understand manual before operating.
WARNING! Electric shock hazard, rotating fan, hot surface
hazards. Unplug unit before opening cover for cleaning or
servicing.
WARNING! Unit must be grounded.
•Keep motor and wiring dry. Keep out of standing water
and do not install in area likely to be subject to water intru-
sion. Do not expose to rain, water or snow.
•Insert three-prong plug on power cord into a matching
electrically grounded outlet. Do not use adapter. Never cut
off third prong. Do not use an extension cord.
•To reduce the risk of fire or electric shock, do not use this
unit with any solid-state speed control device.
FIRE HAZARD
•Keep away from open flames and heat sources.
•Do not use or store where vapors from gasoline, solvents,
thinners or other flammable materials may be present.
SAFETY INSTRUCTIONS
WARNING! Unplug unit before cleaning or servicing.
•Turn off unit and unplug before lifting or moving.
•Handle the unit carefully. Always operate the unit on a
stable, level surface. Do not drop, throw, or place where it
could fall. Rough treatment can damage the unit, and may
create a hazardous condition or
void the warranty.
•Inspect the power cord before
use. If cord is damaged, do not
use. Always grasp the plug (not
the cord) to unplug.
•The unit must be operated on a
115V/60 Hz circuit protected by a
Ground Fault Interrupter (GFI) device.
•This appliance is not intended for use by persons (includ-
ing children) with reduced physical, sensory or mental ca-
pabilities, or lack of experience and knowledge, unless
they have supervision or have been given instruction con-
cerning use of the appliance by a person responsible for
their safety.
•Do not attempt to repair the unit. For Authorized Service
Centers, call Dri–Eaz Service at 800-932-3030.
INTRODUCTION
The CMC100 reduces humidity in enclosed structural environ-
ments by removing water vapor from the air. With proper use,
the CMC100 can help to dry out damp structural materials,
insulation, and contents, and maintain a healthy level of humid-
ity. Using the CMC100 may also prevent secondary damage
caused by high humidity.
How the CMC100 works
The CMC100 refrigerant dehumidifier uses a fan to draw moist
air in and condenses it into water that collects in a tray and is
automatically pumped out through a drain hose. A humidistat
automatically shuts the unit off when the desired level of hu-
midity has been achieved.
Features:
•Industrial-quality dehumidifier removes up to 70 pints (33
liters) of water per day.
•Automatic humidistat control means set-and-forget con-
venience.
•Ductable outlet for flexible application.
•Recessed handles for easy positioning in confined spac-
es.
•Interchangeable intake and output panels allow for use is
a wide variety of settings.
•Quiet operation and low power consumption.
•The CMC100 has been awarded
the ENERGY STAR
INSTALLATION
Location
The CMC100 works best in an en-
closed area, as this creates a drying
chamber. Excessive infiltration of
damp air will increase operating time.
WARNING
NOTICE:
Upon receipt of your CMC100,
inspect it carefully for damage.
Set up and test unit in a tempo-
rary location for proper operation
before installing permanently.

07-01637F F391-A 2012-01 Warranty 07-01651 2 Dri-Eaz Products, Inc.
How to position the CMC100 dehumidifier
Place your CMC100 dehumidifier in the middle of the space,
away from walls, footings, ducts and other materials that may
prevent the free flow of air around and through the unit.
Keep unit level
The unit must be level to operate properly. Four screw-in ad-
justable foot pads are provided. If the CMC is to be used on an
uneven surface, these feet must be assembled and installed
into the bottom of the CMC before placing the unit into service.
1. To assemble the feet, press the bolt through the center of
the rubber foot and tighten the nut until it is snug against
the rubber foot.
2. To install the feet into the CMC100 base, screw one foot
assembly into the bottom of each corner of the unit. NO-
TICE: To avoid damage to the condensate drain outlet, do
not tip the unit over onto the condensate drain side.
3. To level the unit with the feet, place a carpenter’s level on
the top of the unit and adjust the footpads to raise or lower
each corner of the unit until it is level.
NOTICE: The CMC100 must be kept in an upright position. If it
is necessary to place the unit on its side, such as during the
installation of the feet, return the unit to the upright position and
wait at least 10 minutes before starting the unit.
Drain hose set-up
During operation, water condenses out of the air and collects in
a drain pan inside the unit. The CMC100 automatically pumps
out this water through the drain hose outlet (see Figure 3).
Dri-Eaz recommends directing the hose into a drain or well
away from area to be kept dry.
NOTICE:Do not place the end of the drain hose higher than 3
feet (1 meter) above the top of the CMC, or leaking may occur.
Pump operation
Depending on operating conditions, the unit may produce con-
densate water intermittently, in a steady stream, or not at all for
short periods of time. These functions indicate normal dehumi-
difier and pump-purge operations.
NOTICE: To avoid spills, always secure the end of the drain
hose so that the intermittent pumping action doesn’t shift the
hose out of position.
NOTICE: Do not allow the outlet of the drain hose to become
submerged, blocked or otherwise subject to pressure that
might reduce the ability of unit to pump water.
Duct the outlet for optimum performance
The processed air outlet is designed to accept standard 6 inch
ducting (purchased separately). Properly installed, ducting can
help circulate the air in the drying environment and improve
drying efficiency. When using ducting, fasten it securely to the
duct ring (see Figure 3). Place the open end of the duct some
distance away from the unit. Use insulated flex ducting for the
quietest operation.
OPTIONAL CONFIGURATIONS
The CMC100 features interchangeable panels that allow the
unit to be adapted for use on shelves, small storage areas or in
other locations where airflow might be obstructed. The damp
air intake can be set up to draw in air from the end of the unit
or from the side of the unit. Similarly, the output can be set up
to exhaust dry air from the end of the unit or from the side of
the unit. See Fig. 1.
To change the airflow configuration, first unplug the CMC, then
remove the four screws that hold each panel in place (see
Figs. 2 and 3). Lift the panels out of the CMC frame. Replace
the panels in the desired position and carefully tighten the
screws. NOTE: When placing both intake and output panels on
the side of the unit (option C, above right), Dri–Eaz recom-
mends attaching ducting to the output ring and placing the
open end of the ducting some distance away from the CMC.
This will help distribute the processed air more completely.
Fig. 1: Airflow Options (Top View)
Fig. 2: Parts Identification
Recessed
handles
Control panel
Filter door panel
(remove 4 screws
to access filter)
Humid
air inlet
Interchangeable panels.
See Optional Configura-
tions, left.
A
B
C
D

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Fig. 3: Parts Identification
OPERATION
1. Plug in the power cord into a standard 115V grounded
outlet. The unit must be operated on a 115V/60 Hz circuit
protected by a Ground Fault Interrupter (GFI) device.
2. Attach one end of the drain hose to the condensate drain
outlet and directing the other end into a drain or away from
area to be kept dry. NOTICE: To prevent CMC100 drain
pan overflow, ensure that there are no kinks or sharp
bends in the drain hose and do not place the outlet of the
hose higher than 3 ft. (1 m) above the top of the CMC100.
3. The CMC100 is controlled by an electronic touchpad hu-
midistat. The unit will automatically start when the humidity
of the surrounding air exceeds the humidity level selected.
4. Set humidity set point with Control Panel (see below).
CONTROL PANEL
ON/STANDBY button
The ON/STANDBY button toggles the unit between the ON
and STANDBY modes. The display indicates the current mode.
1. In the ON mode, the display shows the current measured
humidity as a percentage of relative humidity.
To view the current humidity setting, first set the unit in
the ON mode, and then press the UP or DOWN arrow
once.
UP button DOWN button
To change the humidity setting, press the UP or DOWN
button twice. Each time you press the button, the value of
the humidity setting will increase or decrease in 5 percent
increments.
Note: In the ON mode, the display will show the humidity
setting only when you press the UP or DOWN buttons. Af-
ter you have finished adjusting the setting, the display will
resume indicating the measured humidity and the CMC
will automatically maintain humidity at the selected setting.
2. In the STANDBY mode, the display shows a double dash.
Unit does not operate in this mode. Press the
ON/STANDBY button to return to ON mode.
Note: The UP and DOWN buttons do not function in the
Stand-by Mode. Press the ON/STANDBY button to
resume operation.
ADDITIONAL MODES
The CMC100 also has a DEFROST mode and a LOW TEM-
PERATURE PROTECTION mode. The unit automatically in-
itiates these modes as conditions warrant. No user intervention
is required.
1. The CMC will automatically enter the DEFROST mode as
needed. The fan will continue to operate until the unit is
ready for the next operating cycle. The unit will automati-
cally return to ON mode when the defrost cycle is com-
plete.
2. When the ambient temperature falls below 45°F (7°C), the
unit enters LOW TEMPERATURE PROTECTION mode
and stops operating. The unit will automatically restart
when the surrounding temperature rises above freezing.
Automatic water pump out
The unit automatically pumps out condensate through the con-
densate drain hose. No user intervention is required.
Note: Check for proper operation before leaving the unit unat-
tended. Do not move the CMC100 while it is operating.
Processed air
outlet
Condensate
drain outlet
Display
ON/STANDBY
button
UP/DOWN
buttons
STANDBY mode
DEFROST Mode
LOW TEMPERATURE PRO-
TECTION Mode
Interchangeable pa-
nels. See Optional
Configurations, p. 2.
Leveling foot-
pads (one on
each corner)
ON mode display
shows current hu-
midity
Indicates normal
operating condi-
tions.

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NOTICE: RH Sensor
(behind bezel). Pro-
tect from contact with
any cleaners or disin-
fectants, as they may
damage the sensor or
cause inaccurate
readings.
MAINTENANCE
WARNING! Unplug unit before cleaning or servicing.
Note: Protect from freezing. Freezing may damage unit.
Note: Check filter one month after first installation for any initial
buildup of dust or debris, and clean as needed. See “Inspect
and Clean Filter Element” below.
MONTHLY MAINTENANCE
Inspect Power Cord
Inspect power cord for cuts, fraying or damage; do not use if
damaged.
Inspect drain hoses
Inspect drain hose for kinks, breaks, or obstructions. Make
sure the hose is draining properly.
Inspect Exterior
Inspect exterior cabinet. Make sure air vents are free of any
obstructions. Listen to the unit for abnormal sounds. For Parts
and Service, call your local distributor or the Dri-Eaz Service
Department at 800–932–3030.
Clean Exterior
Clean the housing with a damp cloth. Make sure inlet and out-
let grills are free of dust and debris.
PERIODIC MAINTENANCE
Inspect and Clean Filter Element
The CMC100 is equipped with a washable filter. Inspect the
filter by removing the four filter door screws and sliding it out of
the filter door panel (see Figure 2). If the filter shows excessive
buildup, vacuum it clean and wash it in mild detergent. Replace
the filter in the filter door and close the door securely.
Note: Do not operate the unit without the filter securely in
place. If the filter becomes torn or can no longer be adequately
cleaned, the filter may be replaced with similar cut-to-fit ma-
terial available at most hardware stores.
Inspect and Clean Pump
If the unit no longer pumps water out of the drain line, the
pump may be clogged with debris. Follow these steps to in-
spect and clean the pump system.
WARNING! Unplug unit before cleaning or servicing.
Tools needed
Screwdriver
Clean cloths
Coil Cleaner (Available from Dri-Eaz, product no. S402)
Vacuum cleaner with crevice tool
Procedure
1. Remove the interchangeable side (see Fig. 4) and set
aside. The panel is attached with four screws.
2. Remove the two drain line panel screws and set the panel
down next to unit. The drain line is permanently attached to
the interior of the panel and to the pump assembly. DO
NOT REMOVE DRAIN LINE FROM PANEL OR FROM
PUMP.
Fig. 5: Remove the four pump bracket bolts
from the CMC drain pan.
Drain line panel
Interchangeable panel
Fig. 4: Remove two panels for access to
pump
Drain line panel

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3. Locate the pump assemble and remove the four bolts con-
necting it to the drain pan (Fig. 5). Lift the pump free. DO
NOT DISCONNECT ANY INTERNAL ELECTICAL
CABLES.
4. Remove the two bolts holding the pump to the pump brack-
et (Fig. 6). Set bracket aside.
5. Locate the impeller housing on the bottom of the pump as-
sembly. Remove the impeller housing by prying apart one
of the two tabs with a screwdriver (Fig. 7). Once one tab is
released, the housing will come loose and the second tab is
easily released.
6. Inspect the impeller and the housing for dirt and debris.
Wipe clean with a cloth. Use a cotton swab to clean the
blades of the impeller.
7. Reattach the impeller housing to the pump assembly. Be-
fore snapping the housing into place, make sure the O-ring
is in position (Fig. 8) and make sure the housing is properly
aligned as shown (Fig. 9). The drain line and the electrical
cable should be pointing in the same direction.
8. Inspect the drip tray. Wipe clean with a cloth as necessary.
9. Reattach the pump assembly to the pump bracket using the
two bolts.
10.Inspect the coil for dust accumulation. Vacuum excess
dust, taking care not to damage any components. Clean
coils with Dri-Eaz Coil Cleaner. Be sure to wipe up any
spills.
11.Inspect the filter. Clean in mild soap and water and dry tho-
roughly before reinstalling into the filter panel.
12.Replace the drain line panel. Make sure the drain line is
free of kinks and sharp bends before tightening the screws.
13.Replace the interchangeable panels.
14.Test the CMC100 for proper operation. For operation in-
structions, see your Owner’s Manual.
NOTE: Before returning the CMC100 to use, make sure it is
properly leveled and that the end of the drain hose is no more
than 3 ft. (1 m) above the top of the CMC100. See “Keep Unit
Level,” p. 2, for instructions.
Fig. 7: Use a screwdriver to pry open
the impeller housing retaining tabs.
Fig. 9: Reassemble impeller as shown. Make
sure electrical cables are oriented in the
same direction as the drain tube.
Fig. 6: Remove the pump from the pump
bracket.
Fig. 8: Make sure O-ring is correctly seated
before reassembling impeller.

07-01637F F391-A 2012-01 Warranty 07-01651 6 Dri-Eaz Products, Inc.
SPECIFICATIONS
Name CMC 100 Dehumidifier
Model F391-A
Dimensions (W × H × D) 10 × 14 × 24 in.
25.4 × 35.6 × 61 cm
Weight 55 lbs. | 25 kg
Air movement 250 CFM | 7.1 m³
Water removal 70 pts/day | 1.4 L/hr
at AHAM (80°F/60% RH)
Power 6.2 amps, 115V
Water removal efficiency
(Energy factor) 4.4 pts/kWh | 2.1 L/kWh
Condensate pump Included – internal
Condensate pump lift capaci-
ty 3 ft. | 1 m
Operating temperature range 45–100°F |7–38°C
Safety ETL certified to UL 474 and CSA
22.2 No. 92
Specifications are subject to change without notice. Some values
may be approximate.
PARTS INCLUDED WITH THE CMC
Four leveling feet with mounting hardware
10 feet (3 meters) of drain hose
One hose clamp for attaching drain hose
ADDITIONAL PRODUCT INFORMATION and current docu-
mentation is available at http://cmc-100.dri-eaz.com.
FOR PARTS AND SERVICE CALL YOUR LOCAL DISTRIB-
UTOR or the Dri-Eaz Service Department at 800-932-3030.
www.dri-eaz.com
Visit warranty.CMC100.com and register your purchase
to ensure you receive any important product releases.
Products that earn the ENERGY STAR help to reduce green-
house gas emissions by meeting strict energy efficiency guide-
lines set by the U.S. Environmental Protection Agency and the
U.S. Department of Energy.
ENERGY STAR and the ENERGY STAR mark are registered
U.S. marks.