READ AND SAVE THESE INSTRUCTIONS
UNITS NOT FOR COMMERCIAL USE
ComfortDry CD55 & CD90
Whole-House Central Dehumidifiers
T R I O N ® | w w w. t r i o n i a q . c o m
Installation, Operation, and Maintenance Manual
READ AND SAVE THESE INSTRUCTIONS
TABLE OF CONTENTS
Introduction........................................................................................................................................ 2
Contents .......................................................................................................................................... 2
Specifications.................................................................................................................................... 3
Operating Modes/Configurations....................................................................................................... 3
Unit Location..................................................................................................................................... 4
Installation......................................................................................................................................... 4
Wiring................................................................................................................................................7
Unit Controls...................................................................................................................................... 8
Configuration & Operation.................................................................................................................9
Maintenance.................................................................................................................................... 10
Troubleshooting............................................................................................................................... 11
Common Repair Parts List.............................................................................................................. 12
Warranty...........................................................................................................................................13
PLEASE COMPLETE THE FOLLOWING ON DAY OF
INSTALLATION. HOMEOWNER TO RETAIN FOR FUTURE
INFORMATIONAL PURPOSES.
Unit Model Number ______________________________________________________________
Serial Number __________________________________________________________________
Installation Date _________________________________________________________________
Installing Contractor Name ________________________________________________________
Installing Contractor Phone ________________________________________________________
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ComfortDry CD55 & CD90
Installation, Operation, & Maintenance Manual
I n t r o d u cti on
CAUTION
Read the entire manual carefully and completely
before installing this product. Installation and
maintenance should be completed by qualified
personnel. Installation contrary to these
guidelines may void warranty.
The benefits of a properly humidified environment
are many. They include personal comfort as well
as the preservation of furniture, draperies, carpets,
wooden floors and cabinets, paintings, pianos,
etc. Higher humidity levels can also increase the
growth-rate of mold, bacteria, viruses, and even
dust mites in the home. Your home can be more
comfortable at a warmer temperature with drier
air than without controlling humidity during the
humid summer months. Since every degree of
temperature change represents about 3% to 5%
of the total cooling costs, each degree warmer you
can set the thermostat can represent a significant
annual savings.
During the cooling season, warm, moist air infiltrates
the home and must be cooled. When cooled, this air
can still be humid as air conditioners are designed
to cool the air, not dehumidify the air. A small
amount of dehumidification may be a benefit of
air conditioners, but they actually work harder and
longer to cool the air when the air is moist. Only
by using a whole house dehumidifier to reduce the
humidity in the entire home’s air, can a balance
between humidity levels, temperature, comfort, and
energy costs be optimized.
ComfortDry CD55 & CD90
Contents
The following items are included with your TRION
ComfortDry dehumidifier:
• ComfortDry CD55 or CD90 dehumidifier
• 20’ standard AC cable
• 12” drain hose, which can be lengthened (see
below)
• Installation/operation manual
If any items are not found, please contact TRION
Customer Service at 800-884-0002.
The following are a list of items that may be required
for a complete installation:
• 6-inch round flexible output air ducting and
clamping, if not operating in standalone unit
mode (length determined by installation location)
• For the CD55, 8-inch round flexible air ducting and
clamping via accessory kit (Part No. 268708-001)
• For the CD90, a 12-inch round flexible input
air ducting and clamping, if not operating in
standalone unit mode (length determined by
installation location)
• Remote humidistat and possibly a 24VAC control
voltage source, if not operating in standalone
unit mode
• Condensate pump (if not easy to reach gravityfed drain)
• Air duct take-offs and conversions as necessary,
if not operating in standalone mode
• ½” ID plastic or vinyl drain hose long enough
to reach gravity-fed drain or condensate pump;
connects to a ½” hose barb located at the bottom
of dehumidifier
• 18-20 gauge thermostat wire for control wiring
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Installation, Operation, and Maintenance Manual
S p e c i f i c a t i on s
Specification
ComfortDry CD55
ComfortDry CD90
Capacity (@ 80°F, 60% RH)
57 Pints per Day
90 Pints per Day
Operating Relative Humidity
35-95%
35-95%
Operating Temperature Range
33°-105°F
33°-105°F
Volts/Hertz
120VAC/60 Hz
120VAC/60 Hz
Full Load Current (@ 80°F, 60% RH)
3.6 Amps
5.5 Amps
Coefficient of Performance
2.53 L/kWh
2.80 L/kWh
Energy Star Rated
Yes
Yes
Refrigerant
R410A
R410A
Airflow @ 0.00” S.P.
250 CFM
370 CFM
Inlet Filter
Yes, Washable MERV 8 Cassette
Washable Pre-Filter and
MERV 8 Cassette
Inlet Duct
Optional 8”
12”
Outlet Duct
6”
6”
Power Cord
20-ft Standard 3-Prong AC
20-ft Standard 3-Prong AC
Sound Level
52 dBa
58 dBa
Drain Pipe Connection
12-¾” OD, ½” ID Vinyl Tubing
12-¾” OD, ½” ID Vinyl Tubing
Digital Control for Standalone Operation
Yes
Yes
Dimensions L x W x H
18” x 12” x 12”
23.4” x 13.7” x 17”
Weight
40 Pounds
65 Pounds
ETL Listed
Yes
Yes
O pe r a t i n g Mod e s/C on fi gu rati on s
The ComfortDry CD55 and CD90 support wholehouse dehumidification and standalone unit
dehumidification modes for crawlspace and
basement applications.
Standalone Unit Dehumidification
Standalone Unit Dehumidification (SUD) is typically
used to dry basements and crawlspaces. For
this application, the CD55 and CD90 are capable
of operating in a complete standalone mode in a
ductless configuration that does not require any
extra ducting or control system hook-ups. In SUD
mode, the CD55 and CD90 have an integrated
humidistat and controller. The user just connects
power, plumbs in the water drain, turns the CD55 or
CD90 on, configures the unit control for SUD mode,
then sets the desired humidity and leaves it alone.
Thereafter, the CD55 or CD90 automatically senses
the humidity level and turns on as needed to remove
access moisture in the air.
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Whole-House Dehumidification
There are two whole-house dehumidification
configurations that can be addressed with the CD55
and CD90. In the first of these configurations (see
Figure 1, page 4), the dehumidifier serves the whole
house but is not duct-integrated with the HVAC
system. Secondly, the CD55 and CD90 share the
return and supply ducting of the HVAC system and
may even share a common integrated thermostat/
humidistat (see Figure 2A and 2B, page 4).
Separate Duct Systems
Whole-house separated dehumidification systems
have traditionally been utilized to support separate,
more isolated rooms that require dehumidification. As
of late, there is a growing trend towards mini-split HVAC
systems that are implemented as heating and cooling
systems. Separated dehumidification configurations
are ideal solutions for mini-split based HVAC systems.
Separate duct systems operate independent of
the HVAC system and are located in basements,
ComfortDry CD55 & CD90
Installation, Operation, & Maintenance Manual
crawlspaces, or perhaps in a closet with ducting to
and from the living area to be humidified.
Figure 1. Whole-Home Separate Duct System
HVAC Duct Systems
Whole-house
HVAC
duct
systems
are
dehumidification configurations in which the CD55
and CD90 will be directly duct-interconnected with
the home’s central HVAC system and typically share
control elements to ensure that the units properly
functions with the ducted airflow. Below are the likely
system example drawings of HVAC configurations.
Figure 2A. Whole-Home HVAC Duct System
Figure 2B. Whole-Home HVAC Duct System
U n i t L o ca ti on
The ComfortDry can be installed in a variety of
locations to meet the owner’s needs as listed below.
In all cases, keep the following cautions in mind:
1. The unit is designed to be installed indoors in a
space that is protected from rain, flooding, and/or
other forms of excess water. Unit is not designed
to be exposed to chlorinated pool conditions or
corrosive chemicals or conditions.
2. Install the unit with space to access the front
panel for maintenance and service. Also, allow
easy access to the filter cover panel.
3. Avoid discharging the air directly at people, over
the water in pool areas, or other areas or objects
where dehydration or evaporation of moisture is
not desired.
ComfortDry CD55 & CD90
4. If used near wet areas, be certain there is NO
chance the unit could fall into the water or be
splashed and that it is wired into a GROUND
FAULT INTERRUPTER protected circuit.
5. A secondary drain pan MUST be placed under
the unit if installed above a living area or above
an area where water leakage could cause
damage (see local codes for other requirements)
6. DO NOT position the ComfortDry directly on
structural members where noise or vibration
may be objectionable. The unit is equipped with
adjustable support feet to raise and level the unit
from the mounting surface; these adjustable feet
should be utilized to provide improved drainage
from the drain pan and should be adjusted to tilt
slightly toward the drain utilized.
7. The ComfortDry should be located near the
existing air handling system to minimize
the required ductwork for connection of the
ComfortDry to the existing HVAC air handling
system. When the option is used, the control
(humidistat) unit must be located in the
space that is to be conditioned. The control
(humidistat) must be low voltage (24V) and
should be connected to the ComfortDry with
code approved, low voltage thermostat cable.
8. When locating the ComfortDry in areas of extreme
heat or high humidity, >120-degrees/90%
humidity, additional external insulation may be
required to prevent undesired condensation on
the exterior of the unit.
Installation
Common Installation Instructions Across All
Configurations
WARNING
Standalone Unit Dehumidification configurations,
as noted, are typically used to dry basements
and crawlspaces. To be properly dehumidified,
the area to be controlled should be sealed with
a vapor barrier. If the unit is to be installed in
a crawlspace, all vents to the outdoors should
be sealed. Do not install your humidifier in a
corrosive environment. Some liquid barriers dry
via “solvent evaporation”. Always ensure the
barrier is completely dry and area is thoroughly
ventilated before installing dehumidifier.
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Installation, Operation, and Maintenance Manual
Step 1: Placement of the Dehumidifier Unit
IMPORTANT: If the dehumidifier unit is handled in
such a manner that the compressor did not remain
in the upright position, it is necessary to place on
a level surface and wait a minimum of two hours
before turning the unit on.
Additionally, ComfortDry dehumidifiers cannot sit
directly on the floor unless the unit condensate drain
output is feeding directly into a sump pump next to it.
When placing, the dehumidifier units are equipped
with adjustable feet that can be used along with a
leveling tool to make sure the dehumidifier rests in
a completely “level” final state as needed for proper
operation.
Step 2: Set Up Drain Line
The condensate drain line should be routed to a
suitable drain to carry the condensate water to the
outside. The drain line must flow down without any
loops, dips, or valleys to the final drain hole.
Recommended Dehumidifier Drain Configuration
Including a Transition to PVC Pipe
4. Support the PVC tubing so that it maintains a
smooth downward flow to drain.
5. Always test the drain before leaving the
installation area.
Step 3: Electrical Power Connections
The dehumidifiers are equipped with a 3-prong,
standard 120VAC electrical plug. Given operation in
damp and wet environments, and to put safety first,
the required electrical outlet to be used to connect
the dehumidifiers should have:
1. Ground Fault Circuit Interrupter (GFCI)
2. 15 Amp minimum circuit that cannot be shared
with any other significant load
WARNING
In all cases, local codes precede over installation
and wiring recommendations. Do not plug the
dehumidifiers into the outlet until all the control
circuitry is properly connected.
120VAC may cause serious injury from electric
shock. To ensure safety:
1. Disconnect electrical power before servicing.
2. Only plug unit into grounded electrical circuit.
3. Do not use extension cord.
4. Do not use a plug adapter.
Step 4: General Ducting Points and Requirements
In all cases, sound duct design practices must be
followed, such as those provided in ACCA manual “D”
of ASHRAE’s Fundamentals of Air System Design.
Drain Tube - 12 Inches Long, 12 MM OD
Figure 3. Drain Tube Drawing
1. Cut a piece of ¾” OD PVC that is 6” minimum.
2. Insert PVC into a ¾” elbow, then attach a ¾” OD
length of PVC to drain. Keep the length of the
PVC drain pipe to a minimum and make sure it
flows down.
3. Insert the open end of the dehumidifier
condensate tubing into the ¾” pipe so that it does
not extend into the elbow fitting. For proper flow,
a minimum downward slope of 1” per 10’ run is
required. NOTE: If a proper downward angle is
not possible, then it is recommended to use an
external condensate pump configuration. This
will require expert installation.
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For supply side air ducting (output from the
dehumidifier), both the ComfortDry CD55 and CD90
have 6” round ducts.
For return side ducting, the dehumidifiers are
equipped as follows:
• A 12” round collar for the CD90.
• The CD55 does not include a return duct, as it is
preferred for standalone operation, which may
not require ducting. However, an 8” round collar
can be ordered separately from TRION and
requires easy mounting (Part No. 268708-001).
For ducting material to use between existing ducts
or new ducts with the ComfortDry dehumidifiers, it is
advisable to select an acoustical flex duct material
ComfortDry CD55 & CD90
Installation, Operation, & Maintenance Manual
on all dehumidifier duct connections to reduce
noise and vibration transmitted to rigid ductwork
in the structure. At the same time, flex ducting is
very easy to use and eliminates the need for very
detailed measurement, cutting, and duct forming.
Ducting for Standalone Unit Configuration
For Standalone Unit Dehumidification, there is not
a connection to existing HVAC ductwork. In the
SUD case, when installing the dehumidifier inside
a sealed crawlspace, a basement, or a sealed attic,
the ducting requirements are recommended as
follows:
1. If the area is open without partitions and the
dehumidifier can be located near the center of
the zone, then the return ducting is not absolutely
necessary. Still, a minimum length of 5’ supply
duct will aid in overall air distribution. The short
supply duct distance will support carrying the
dehumidified air far enough away from the unit
that it will not be quickly reprocessed again as
returned air.
2. If the area being served is divided by walls or
partitions, then the return duct should be routed
to a second area/zone than the area where the
humidifier is placed - and the supply duct should
be routed to even a third area. These different
areas will help push the air between the walls
and/or partitions.
3. A similar but reverse strategy as #1 above, if
the dehumidifier needs to be located along the
perimeter in a more open zone, then a single
return to the dehumidifier should be installed
in the central open area of the structure to aid
overall air distribution.
Ducting for Whole-House Separate Room
Figure 1 on page 4 depicts an example system
configuration that is in a residential living environment
but is not interconnected with an existing HVAC
system. The dehumidifier unit is separated given
the living area is not in close proximity with the
HVAC system, or the existing HVAC system could
be a mini-split without any ductwork to connect with.
In either case, the dehumidifier is to be installed with
its own separate ducting, including both return and
supply side. Note: The CD55 will require the duct
accessory kit (Part No. 268708-001).
ComfortDry CD55 & CD90
Return Ducting for Whole-House Separate Room
The return duct length is not overly critical, and it is
acceptable to provide more than a single return path
to the dehumidifier to improve overall airflow from
other far apart rooms. CAUTION: Be sure that grills
and/or diffusers do not excessively restrict airflow.
Supply Ducting for Whole-House Separate Room
For the supply output ducting (output air from the
dehumidifier), the total duct length should be less
than 10 feet total to reduce the back pressure on the
dehumidifier blower. CAUTION: Be sure that grills
and/or diffusers do not excessively restrict airflow.
Ducting for Whole-House HVAC Configuration
For whole-house HVAC duct connections, please
reference Figures 2A and 2B on page 4. In both of
these configurations, the ComfortDry dehumidifiers
are placed in the return path of the HVAC systems.
Note: The CD55 will require the duct accessory kit
(Part No. 268708-001).
For Figure 2A, the dehumidifier sources its return air
connection from the HVAC return connection, and then
the source air connection from the dehumidifier is fed
back to the HVAC return air duct a few feet downstream.
For whole-house HVAC, this is the most common,
most effective, and easiest ducting implementation
to use. It is best because it is dehumidifying the air
ahead of the air conditioning coil system to eliminate
the wettest air first ahead of the HVAC coils. This
enhances the overall cooling system efficiency. Also,
by inputting air from the HVAC return duct and returning
the conditioned air to the same HVAC return duct,
there is not an additional air pressure differential to
overcome. In this configuration, keep the length of the
dehumidifier return and source ducting at a minimum.
For the second whole-house HVAC configuration,
please reference Figure 2B on page 4. The difference
from Figure 2A is that the dehumidifier return path
is independent from the HVAC return path. In this
configuration, the ComfortDry dehumidifier has its
own completely independent and dedicated ducting
and return air grill. This configuration is ideal when
there is a need to dry a specific conditioned or
unconditioned area. An example would be to feed the
separate room from the main living area, which would
maximize the airflow from there, proving a living area
that likely is more dry than the other living areas.
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Installation, Operation, and Maintenance Manual
Wiring
Discussed and illustrated here will be the basic control
scenario for three classes of dehumidifier control:
1. Standalone unit dehumidification
2. Whole-house separated dehumidification
3. Whole-house using high integration consolidated
thermostat and humidistat
SUD Configurations
No extra control wiring is required for SUD
configurations, as the ComfortDry dehumidifiers in
this mode operate completely standalone, sampling
humidity from the local air - and then using the settings
made by the user interface to either switch-on or
switch-off. Please reference the Operation section for
details on how to configure and use the ComfortDry
dehumidifier in standalone configurations.
Whole-House Separated Room Configurations
This type can be controlled with the addition of a
nection of external
to dehumidifier
single humidistat
humidistat
located in terminals.
the living area that is
start HVAC blower
upon a call
dehumidification.
When
to be served
byforthe
ComfortDry dehumidifier.
See
Figure
4
below
to
guide
specific
hook-ups.
For
he dehumidifier will act to turn off the HVAC blower
external
the the
dehumidifiers
are connected to
ll for cooling
present.control,
At that time,
HVAC
the
control
systems
with
the
6-position
terminal strip
ndler will be controlling the HVAC blower.
as illustrated.
Terminals A3 and A4 need to be powered to switch
the dehumidifier on, typically connecting A4 to the
control voltage common signal (C) and switching
the 24VAC control hot signal (R) through a set of
normally open contacts typically integrated into the
separate humidistat. When the humidity rises above
the set-point, the humidistat contacts close, which
then connects the dehumidifier pin A3 to 24VAC and
switches the dehumidifier ON.
To implement a required interlock with the HVAC
fan control, interconnect dehumidifier terminal strip
connections A3 to A2 as illustrated below. Then,
connect the dehumidifier terminal strip A1 back to
the HVAC “green” connection, which typically turns
the HVAC fan ON.
Also in the illustration below, please note the
functionality associated with dehumidifier connections
A5 and A6. A5 and A6 can be used to interlock the
dehumidifier to the condensate drain system. If the
water does not properly drain and the float switch
closes, this will cause an error function to be triggered
by the dehumidifier, which will cause the unit to
permanently shut off. The error condition can only be
reset by switching the dehumidifier breaker off, then
back on or by unplugging power from the dehumidifier.
DEHUMIDIFIER TERMINALS
A1 A2 A3 A4 A5 A6
HVAC SYSTEM
TERMINALS
G
DH
DH
R
EXTERNAL
DEHUMIDISTAT
TERMINALS
C
JUMPER
WIRE
NORMALLY OPEN FLOAT SWITCH
(IF AND WHEN THESE CONTACTS EVER
CLOSE, DEHUMIDIFIER IS PERMANENTLY
DISABLED UNTIL AC POWER IS CYCLED
OFF AND THEN BACK ON)
Figure 4. Wiring Diagram
*If the the
dehumidifier
is installed
in an in
attic or another
* If the dehumidifier is installed in an attic or another location requiring leak protection,
unit should
be placed
leak
protection,
the
unit
should
be
placed
a condensate pan with a normally open condensate overflow safety switch (float switch). Wire the float switch to in a conde
Terminals A5 and A6 as shown.
a normally closed, condensate overflow safety switch
Wire the float switch to terminals A5 and A6 as show
7
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ComfortDry CD55 & CD90
Installation, Operation, & Maintenance Manual
Whole-House HVAC Configurations
An increasing number of systems are being
implemented
with
combination
thermostat/
humidistats. In the same spirit of consolidated
control, there are also high integration thermostats
that include two different humidity control capabilities.
The first provides separate control for a humidifier
typically required during heating season, and the
second provides separate control for a dehumidifier
during the air conditioning season. At the same
time, control systems have also become multispeed controllers as required to interoperate with
high efficiency heat-pump and forced air systems.
TRION dehumidifiers are equipped with the basic
required interconnection as illustrated in Figure
4 on page 7. However, this manual does not
provide interconnection diagrams for the multitude
of integrated thermostat/humidistats currently
available. The installation and control should be
performed by an expert HVAC technician who will
have the required knowledge to properly prescribe
and interconnect a specific combination thermostat/
humidistat. See the TRION website (www.trioniaq.
com) for interconnection diagrams covering the
most common control systems.
U n i t C o ntrol s
Operation of the dehumidifier is supported with
both the unit control panel and optional humidistat
for whole-house configurations. In either case,
the dehumidifier configuration is set using the
dehumidifier control panel shown below.
Whole-House
Figure 5. Dehumidifier Control Panel
Button Functions
1. Power Button ON/OFF
Use this button to turn the dehumidifier ON and
OFF. Press once to turn the machine ON. You
ComfortDry CD55 & CD90
will hear a beep, and the power light will illuminate
red. If in Unit/Standalone mode, press the button
a second time, and you will hear one beep as the
machine shuts down. Specially note that there is a
one minute fan delay from button push to shutdown.
In addition, the dehumidifier, once configured for
operation, will automatically return to that mode
during power glitch or outage.
If the dehumidifier is switched ON and then put
into Remote/Whole-House Mode, the unit cannot
be turned off with the switch. If in the Remote/
Whole-House Mode and you want to turn the main
power off, then switch the dehumidifier into Unit/
Standalone Mode that re-arms the OFF switch (both
mode indicator lamps off). Thereafter, the power
switch can be used to switch OFF.
2. Arrow Buttons ▲ Up and ▼ Down
Use the Up and Down arrow buttons to set the
humidity set point on the display screen, when
using in SUD configuration. The set points can be
any number between 35 to 99. Creating a set point
means that when the indoor humidity is lower than
the set point, the machine will stop automatically.
Conversely, when the indoor humidity is higher than
the set point, the button is pushed and the unit will
switch ON to run.
3. Central Control Configuration Button
Press this button to switch the dehumidifier between
Standalone Unit Configuration and Whole-House
Configuration. Whole-House Configuration is selected
when the green lamp is turned on above.
Indicator Lights
1. Humidity Display Screen
The display screen has two functions. When the
unit is powered ON, it shows the local humidity.
While setting the desired humidity level, the screen
will show the set point humidity level.
2. Whole-House Indicator Light
When the indicator light is green, it illustrates the
unit is configured for Whole-House Configuration
and not Standalone Mode. While in Whole-House
Configuration, the dehumidifier is to be controlled
by a separate humidistat.
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8
Installation, Operation, and Maintenance Manual
3. Power Indicator Light
This light indicates that the unit is properly powered
ON and ready to operate in Standalone Mode. In
Remote/Whole-House Mode, the Power Indicator
only illuminates when the unit is running. Always
make sure this unit is OFF prior to performing any
service.
4. Continuous Defrost Light
When this light illuminates green, it indicates that
the dehumidifier is set to Continuous Operation
Mode. When the light glows red, it means the unit
is in Auto Defrost Mode and clearing the evaporator
coil of any ice buildup.
5. Compressor Light
When the Compressor light glows red, it indicates
that the compressor has been initiated to run but is
currently warming up. Once the compressor light
switches to green, it indicates that the compressor
is in working status.
Figure 6. CD55 Operation Diagram
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Configur ation & Oper ation
Standalone Unit Configuration
After the dehumidifier is properly installed, ducted,
connected to AC power, and condensate drain
plumbed, standard operation can be configured and
initiated.
Step 1
Push the power switch to turn the dehumidifier
ON. TEST MODE can be initiated by switching
the dehumidifier into Standalone/Unit Mode then
by pressing and holding down both arrow buttons.
Press down both arrow buttons again to turn off
TEST MODE (continual on function).
Step 2
Press the Central Control button until the WholeHouse light turns OFF, which indicates the unit is
configured for Standalone/Unit Mode of operation.
Figure 7. CD90 Operation Diagram
ComfortDry CD55 & CD90
Installation, Operation, & Maintenance Manual
Step 3
Next, see the Humidity Screen Display, which will
indicate the current local humidity. Use the Up/Down
arrow buttons to set the humidity set point for the
dehumidifier. If the humidity rises above the set point,
then the dehumidifier will switch ON and run continuously
until the humidity set point is achieved. There may be a
1-2 minute delay when the unit starts a dehumidifier ON
cycle before it actually begins dehumidifying, as there
is a compressor warm-up cycle required and indicated
by a red Compressor light. Likewise, if powering OFF,
there may be a short one minute delay required for the
unit to cycle down and shut off.
Step 4
From there, the unit will run and only needs to be switched
OFF for cleaning and maintenance if necessary.
Whole-House Configuration
After the dehumidifier is properly installed, ducted,
humidistat control wired, connected to AC power,
and condensate drain plumbed, standard operation
can be configured and initiated.
Step 1
Be sure to turn OFF the Dehumidifier Mode on the
external humidistat controller before switching on
the dehumidifier. Also, if an external float switch
is being used for the condensate drain circuitry, be
sure the condensate tank is empty or near empty
and the associated float switch is open.
Step 2
Push the power switch to turn the dehumidifier ON.
Step 3
Press the Central Control button until the WholeHouse light turns on, which indicates the unit is
configured for Whole House Mode of operation.
After a very brief delay, the dehumidifier will switch
into the Whole-House Mode.
Step 4
After setting the unit for Whole-House Mode in Step 3
above and from this point forward, the dehumidifier is
exclusively controlled by the dehumidistat. At this time,
the humidistat controller can be turned on and the humidity
setting adjusted accordingly. When the humidistat
signals the need for dehumidification, there may be a
1-2 minute delay when the unit starts a dehumidifier ON
ComfortDry CD55 & CD90
cycle before it really begins dehumidifying, as there is a
compressor warm-up cycle required and indicated by a
red Compressor light. Likewise, if powering OFF, there
may be a short one minute delay required for the unit to
cycle down and shut off.
From here on, the unit will run and only needs to be
switched off for cleaning and maintenance if necessary.
M aintenance
ComfortDry CD55
Cleaning the Machine Body
Use a damp cloth to clean exterior of unit. Do not
use any soap or solvents.
WARNING
Always unplug the unit before performing any
maintenance.
Cleaning the Filter (See Figure 8)
1. Unplug the unit.
2. If your unit has a supply duct adapter, loosen the
duct adapter.
3. Slide out the filter.
4. Clean the filter mesh by vacuuming or washing
with warm water (no soap or solvents).
5. Reinsert filter. If applicable, retighten supply
duct adapter.
6. Ensure filter is completely dry before restarting
unit.
Coil Maintenance
Once per year, clean the coils with an approved
coil cleaner. Coil cleaner should be a self-rinsing,
foaming cleaner such as WEB® Coil Cleaner.
Figure 8. CD55 Maintenance Diagram
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10
Installation, Operation, and Maintenance Manual
ComfortDry CD90
Cleaning the Machine Body
Use a soft damp cloth to clean exterior of unit. Do not
use any soap or solvents.
Cleaning the Filter (See Figure 9)
1. Unplug the unit.
2. Rotate the air inlet grille counterclockwise to remove.
3. Clean the filter mesh by vacuuming or washing
with warm water (no soap or solvents).
4. Reinsert the air inlet grille by rotating it clockwise
onto the unit.
5. Be sure filter is completely dry before restarting unit.
Release the screw
and rotate the latch for
removing the filters
MERV 8 Clean
air filter
Coil Maintenance
Once per year, clean the coils with an approved
coil cleaner. Coil cleaner should be a self-rinsing,
foaming cleaner such as WEB® Coil Cleaner.
3
Inlet
filter
2
4
Figure 9. CD90 Maintenance Diagram
Tr o u b l e s h o oti ng
Symptom
Machine won’t run
Low air flow
Loud noise
Trouble code E1
Trouble code E4
Trouble code HI or LO
11
Cause
Solution
Power supply
Verify that there is power to the outlet and that the
plug is properly installed in the outlet.
Room temperature over 105° F (display
HI) or below 33° F (display LO)
The unit is outside the operating temperature
range. Modify the room conditions so that the
temperature is between 33° and 105° F and
operation will commence.
Air filter is clogged
Clean the filter mesh according to instructions
listed in manual.
Air inlet or outlet is blocked
Clear the blockage from inlet or outlet.
Machine is not level
Move the dehumidifier to flat, firm ground.
Filter mesh is blocked
Clean the filter mesh according to instructions
listed in manual.
E1 = Humidity sensor issues or bad
communication between main board
and sensor
Check to ensure that wire is connected at both
ends. If no issues are visible, the sensor may be
faulty and need replacement.
E4 = Pump maintenance is required
If pump safety switch is hooked up to terminals
A5 and A6, then this code typically indicates the
condensate pump is not working or the float is
stuck. After fixing condensate pump issue, the
error can only be reset by disconnecting and
reconnecting power to unit.
Room temperature over 105° F (display
HI) or below 33° F (display LO)
The unit is outside the operating temperature
range. Modify the room conditions so that the
temperature is between 33° and 105° F and
operation will commence. If room conditions
are within temperature range, replace defective
sensor.
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ComfortDry CD55 & CD90
Installation, Operation, & Maintenance Manual
Pa r t s Li st
Common Repair Parts
TRION Part No.
Description
268512-901
CD90 Return Duct & Filter Mounting Hardware
268512-902
CD Main Control Board
268512-903
CD Main Display Board
268512-904
CD Humidity Sensor
268512-905
CD Snap-In Supply Collar
268512-906
CD55 Fan Motor
268512-907
CD55 Complete Fan Assembly
268512-908
CD55 Fan Capacitor
268512-909
CD55 Compressor Capacitor
268512-910
CD55 Humidity Sensor Cable
268512-911
CD55 Display Cable
268512-912
CD55 Adjustable Foot
268512-913
CD55 MERV 8 Filter
268512-914
CD90 Fan Motor
268512-915
CD90 Fan Capacitor
268512-916
CD90 Compressor Capacitor
268512-917
CD90 Display Cable
268512-918
CD90 Adjustable Foot
268512-919
CD90 Round Prefilter
268512-920
CD90 MERV 8 Filter
268512-921
CD90 Humidity Sensor Cover
268708-001
CD55 Duct Mount Kit
ComfortDry CD55 & CD90
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12
Installation, Operation, and Maintenance Manual
Wa r r a n t y
Dehumidifier Limited Warranty
Applies in U.S.A. and Canada Only
FAILURE TO MAINTAIN YOUR EQUIPMENT WILL
VOID THIS WARRANTY. The following TRION
Product equipment is covered by the Limited
Warranty: Whole-House Dehumidifiers ComfortDry
CD55 & CD90.
TRION warrants the ComfortDry CD90 or CD55
dehumidifier (“Product”) will be free of material
defects in workmanship or materials for a period of
two years following the date of initial purchase of such
Product by an original customer purchasing from a
TRION or an authorized TRION reseller; and the
Product’s condenser, evaporator, and compressor
will be free of material defects in workmanship or
materials for a period of five years following the date
of initial purchase of such Product by a Customer
from TRION or an authorized TRION reseller.
Limitation of Remedies: CUSTOMER’S SOLE
AND EXCLUSIVE REMEDY UNDER THE ABOVE
LIMITED WARRANTY AND TRION’S ENTIRE
LIABILITY THEREUNDER, SHALL BE, AT THE
SOLE OPTION OF TRION, REPLACEMENT
OR REPAIR OF SUCH PRODUCT OR ITS
COMPONENTS (“COMPONENTS”) BY TRION
OR TRION’S AGENTS ONLY. REFRIGERANT,
PIPING, SUPPLIES, TRANSPORTATION COSTS,
OR LABOR COSTS INCURRED IN REPAIR OR
REPLACEMENT OF SUCH COMPONENTS
ARE NOT INCLUDED. THIS DISCLAIMER
AND EXCLUSION SHALL APPLY EVEN IF THE
EXPRESS WARRANTY AND LIMITED REMEDY
SET FORTH HEREIN FAILS OF ITS ESSENTIAL
PURPOSE. CUSTOMER ACKNOWLEDGES THAT
NO REPRESENTATIVE OF TRION OR OF ITS
AFFILIATES OR RESELLERS IS AUTHORIZED TO
MAKE ANY REPRESENTATION OR WARRANTY
ON BEHALF OF TRION OR ANY OF ITS
AFFILIATES OR RESELLERS THAT IS NOT IN
THIS AGREEMENT. Notwithstanding the above,
during the term of the Two-Year Warranty only,
TRION will provide, free of charge to Customer,
all Components and labor (except costs related to
removal and installation of Product) required to fulfill
its obligations under such Two-Year Warranty.
13
w w w. t r i o n i a q . c o m
Disclaimer of Warranties: EXCEPT FOR ABOVE
LIMITED WARRANTY, WHICH IS THE SOLE
AND
EXCLUSIVE
WARRANTY
PROVIDED
WITH RESPECT TO THE PRODUCT AND ITS
COMPONENTS, TRION HEREBY DISCLAIMS
ALL EXPRESS AND IMPLIED WARRANTIES,
INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE.
Warranty Limitations:
The foregoing limited
warranty extends only to a Customer and shall be
null and void upon attempted assignment or transfer.
A “defect” under the terms of the limited warranty
shall not include problems resulting from Customer’s
or Customer’s employees’, agents’, invitees’, or a
third party’s misuse, improper installation, improper
design of any system in which the Product is included,
abuse, lack of normal care, failure to follow written
instructions, tampering, improper repair, or freezing,
corrosion, acts of nature, or other causes not arising
out of defects in TRION’s workmanship or material.
If a Product or Component is replaced while under
warranty, the applicable limited warranty period shall
not be extended beyond the original warranty time
period. The limited warranty does not cover any costs
related to changes to a Product or Component that
may be required by any codes, laws, or regulations
that may become effective after initial purchase of
the Product by Customer.
Customer Responsibilities: As a further condition
to obtaining warranty coverage hereunder, the
Customer must send a valid warranty claim to TRION
such that TRION receives such claim prior to the
end of the applicable warranty period. TRION shall
have no obligation hereunder with respect to any
claim received by TRION after the expiration of the
applicable warranty period. As a further condition to
obtaining warranty coverage hereunder, the Customer
must present forms of invoices evidencing proof of
purchase of a Product. If such invoices do not clearly
indicate the date of initial purchase by a Customer, the
applicable Product’s date of manufacture will be used
instead of the date of initial purchase for the purpose
of calculating the commencement of the applicable
warranty period. Warranty service must be performed
by TRION or a servicer authorized by TRION. In order
to obtain warranty service, the Customer should call
TRION at 1-800-884-0002 and ask for the TRION
ComfortDry CD55 & CD90
Installation, Operation, & Maintenance Manual
Product Customer Service Department, which will
then provide shipping information and/or arrange for
applicable warranty services. Warranty service will
be performed during customary, daytime working
hours. If the Product must be shipped for service,
Customer shall be solely responsible for properly
packaging the Product, for all freight charges, and
for all risk of loss associated with shipment.
Limitation of Liability:
IN NO EVENT
SHALL TRION, IN CONNECTION WITH THE
DESIGN, SALE, INSTALLATION, USE, REPAIR,
REPLACEMENT, OR PERFORMANCE OF ANY
PRODUCT, COMPONENT, PART THEREOF, OR
WRITTEN MATERIAL PROVIDED THEREWITH,
BE LIABLE, TO THE EXTENT ALLOWED
UNDER APPLICABLE LAW, UNDER ANY LEGAL
THEORY FOR ANY SPECIAL, DIRECT, INDIRECT,
COLLATERAL OR CONSEQUENTIAL DAMAGES
OF ANY KIND. NOTWITHSTANDING THE ABOVE
LIMITATIONS AND WARRANTIES, THE SOLE AND
EXCLUSIVE LIABILITY OF TRION, REGARDLESS
OF THE NATURE OR THEORY OF THE CLAIM,
SHALL UNDER NO CIRCUMSTANCES EXCEED
THE PURCHASE PRICE OF THE PRODUCT,
COMPONENT OR PART UPON WHICH THE
CLAIM IS PREMISED.
Applicable Law and Venue: ANY ARBITRATION,
ENFORCEMENT OF AN ARBITRATION, OR
LITIGATION RELATED TO THE PRODUCT WILL
BE BROUGHT EXCLUSIVELY IN MILWAUKEE
COUNTY,
WISCONSIN, AND
CUSTOMER
CONSENTS TO THE JURISDICTION OF THE
FEDERAL AND STATE COURTS LOCATED
THEREIN, SUBMITS TO THE JURISDICTION
THEREOF AND WAIVES THE RIGHT TO CHANGE
VENUE. CUSTOMER FURTHER CONSENTS TO
THE EXERCISE OF PERSONAL JURISDICTION
BY ANY SUCH COURT WITH RESPECT TO ANY
SUCH PROCEEDING.
Miscellaneous: If any term or condition of this
Limited Warranty is found by a court of competent
jurisdiction to be invalid, illegal, or otherwise
unenforceable, the same shall not affect the other
terms or conditions hereof or thereof or the whole of
this Limited Warranty. Any delay or failure by TRION
to exercise any right or remedy will not constitute a
waiver of TRION to thereafter enforce such rights.
ComfortDry CD55 & CD90
w w w. t r i o n i a q . c o m
14
TRION®
101 McNeill Rd. | Sanford, NC 27330
P: 800.884.0002 | F: 800.458.2379 | www.trioniaq.com | customerservice@trioniaq.com
Form No. 268513-001 Rev. 12/17
© TRION 2017. All Rights Reserved.