Trion ComfortDry CD55 User manual

TRION®| www.trioniaq.com

ComfortDry CD55 & CD90

Whole-House Central Dehumidiers

READ AND SAVE THESE INSTRUCTIONS

ComfortDry CD55 & CD90

Installation, Operation, and Maintenance Manual

www.trioniaq.com1

READ AND SAVE THESE INSTRUCTIONS

TABLE OF CONTENTS

Introduction....................................................................................................................................... 2

Contents ......................................................................................................................................... 2

Specications ................................................................................................................................... 3

Operating Modes/Congurations...................................................................................................... 3

Unit Location..................................................................................................................................... 4

Installation ........................................................................................................................................ 4

Wiring................................................................................................................................................7

Unit Controls..................................................................................................................................... 8

Conguration & Operation.................................................................................................................9

Maintenance................................................................................................................................... 10

Warranty...........................................................................................................................................11

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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Installation, Operation, & Maintenance Manual

Introduction

CAUTION

Read the entire manual carefully and completely

before installing this product. Installation and

maintenance should be completed by qualied

personnel. Installation contrary to these

guidelines may void warranty.

The benets of a properly humidied environment

are many. They include personal comfort as well

as the preservation of furniture, draperies, carpets,

wooden oors 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 signicant

annual savings.

During the cooling season, warm, moist air inltrates

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 dehumidication may be a benet 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 dehumidier to reduce the

humidity in the entire home’s air, can a balance

between humidity levels, temperature, comfort, and

energy costs be optimized.

Contents

The following items are included with your TRION

ComfortDry dehumidier:

• ComfortDry CD55 or CD90 dehumidier

• 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 exible output air ducting and

clamping, if not operating in standalone unit

mode (length determined by installation location)

• For the CD55, 8-inch round exible air ducting and

clamping via accessory kit (Part No. 268708-001)

• For the CD90, a 12-inch round exible 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 gravity-

fed 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 dehumidier

• 18-20 gauge thermostat wire for control wiring

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Specifications

Specication 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

Coefcient of Performance 2.53 L/kWh 2.80 L/kWh

Energy Star Rated Yes Yes

Refrigerant R410A R410A

Airow @ 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

Operating Modes/Configurations

The ComfortDry CD55 and CD90 support whole-

house dehumidication and standalone unit

dehumidication modes for crawlspace and

basement applications.

Standalone Unit Dehumidication

Standalone Unit Dehumidication (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 conguration 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, congures 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.

Whole-House Dehumidication

There are two whole-house dehumidication

congurations that can be addressed with the CD55

and CD90. In the rst of these congurations (see

Figure 1, page 4), the dehumidier 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 dehumidication systems

have traditionally been utilized to support separate,

more isolated rooms that require dehumidication. As

of late, there is a growing trend towards mini-split HVAC

systems that are implemented as heating and cooling

systems. Separated dehumidication congurations

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

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crawlspaces, or perhaps in a closet with ducting to

and from the living area to be humidied.

HVAC Duct Systems

Whole-house HVAC duct systems are

dehumidication congurations 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 airow. Below are the likely

system example drawings of HVAC congurations.

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, ooding, 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 lter 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.

Unit Location

Figure 1. Whole-Home Separate Duct System

Figure 2B. Whole-Home HVAC Duct System

Figure 2A. Whole-Home HVAC Duct System

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.

Common Installation Instructions Across All

Congurations

Installation

WARNING

Standalone Unit Dehumidication congurations,

as noted, are typically used to dry basements

and crawlspaces. To be properly dehumidied,

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 humidier 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 dehumidier.

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Step 1: Placement of the Dehumidier Unit

IMPORTANT: If the dehumidier 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 dehumidiers cannot sit

directly on the oor unless the unit condensate drain

output is feeding directly into a sump pump next to it.

When placing, the dehumidier units are equipped

with adjustable feet that can be used along with a

leveling tool to make sure the dehumidier rests in

a completely “level” nal 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 ow down without any

loops, dips, or valleys to the nal drain hole.

Recommended Dehumidier Drain Conguration

Including a Transition to PVC Pipe

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

ows down.

3. Insert the open end of the dehumidier

condensate tubing into the ¾” pipe so that it does

not extend into the elbow tting. For proper ow,

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 conguration. This

will require expert installation.

4. Support the PVC tubing so that it maintains a

smooth downward ow to drain.

5. Always test the drain before leaving the

installation area.

Step 3: Electrical Power Connections

The dehumidiers are equipped with a 3-prong,

standard 120VAC electrical plug. Given operation in

damp and wet environments, and to put safety rst,

the required electrical outlet to be used to connect

the dehumidiers should have:

1. Ground Fault Circuit Interrupter (GFCI)

2. 15 Amp minimum circuit that cannot be shared

with any other signicant load

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.

For supply side air ducting (output from the

dehumidier), both the ComfortDry CD55 and CD90

have 6” round ducts.

For return side ducting, the dehumidiers 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.

For ducting material to use between existing ducts

or new ducts with the ComfortDry dehumidiers, it is

advisable to select an acoustical ex duct material

WARNING

In all cases, local codes precede over installation

and wiring recommendations. Do not plug the

dehumidiers into the outlet until all the control

circuitry is properly connected.

Figure 3. Drain Tube Drawing

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on all dehumidier duct connections to reduce

noise and vibration transmitted to rigid ductwork

in the structure. At the same time, ex ducting is

very easy to use and eliminates the need for very

detailed measurement, cutting, and duct forming.

Ducting for Standalone Unit Conguration

For Standalone Unit Dehumidication, there is not

a connection to existing HVAC ductwork. In the

SUD case, when installing the dehumidier 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

dehumidier can be located near the center

of the zone, then the return ducting is not

absolutely necessary. Still, a minimum length

of supply duct of just 3’ to 6’ will aid in overall air

distribution. The short supply duct distance will

support carrying the dehumidied 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

humidier 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 dehumidier needs to be located along the

perimeter in a more open zone, then a single

return to the dehumidier 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

conguration that is in a residential living environment

but is not interconnected with an existing HVAC

system. The dehumidier 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 dehumidier is to be installed with

its own separate ducting, including both return and

supply side. Note: The CD55 will require the duct

accessory kit.

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 dehumidier to improve overall airow from

other far apart rooms. CAUTION: Be sure that grills

and/or diffusers do not excessively restrict airow.

Supply Ducting for Whole-House Separate Room

For the supply output ducting (output air from the

dehumidier), the total duct length should be less

than 10 feet total to reduce the back pressure on the

dehumidier blower. CAUTION: Be sure that grills

and/or diffusers do not excessively restrict airow.

Ducting for Whole-House HVAC Conguration

For whole-house HVAC duct connections, please

reference Figures 2A and 2B on page 4. In both of

these congurations, the ComfortDry dehumidiers

are placed in the return path of the HVAC systems.

Note: The CD55 will require the duct accessory kit.

For Figure 2A, the dehumidier sources its return air

connection from the HVAC return connection, and then

the source air connection from the dehumidier 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 rst ahead of the HVAC coils. This

enhances the overall cooling system efciency. 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 conguration, keep the length of the

dehumidier return and source ducting at a minimum.

For the second whole-house HVAC conguration,

please reference Figure 2B on page 4. The difference

from Figure 2A is that the dehumidier return path

is independent from the HVAC return path. In this

conguration, the ComfortDry dehumidier has its

own completely independent and dedicated ducting

and return air grill. This conguration is ideal when

there is a need to dry a specic conditioned or

unconditioned area. An example would be to feed the

separate room from the main living area, which would

maximize the airow from there, proving a living area

that likely is more dry than the other living areas.

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Discussed and illustrated here will be the basic control

scenario for three classes of dehumidier control:

1. Standalone unit dehumidication

2. Whole-house separated dehumidication

3. Whole-house using high integration consolidated

thermostat and humidistat

SUD Congurations

No extra control wiring is required for SUD

congurations, as the ComfortDry dehumidiers 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 congure and use the ComfortDry

dehumidier in standalone congurations.

Whole-House Separated Room Congurations

This type can be controlled with the addition of a

single humidistat located in the living area that is

to be served by the ComfortDry dehumidier. See

Figure 4 below to guide specic hook-ups. For

external control, the dehumidiers are connected to

the control systems with the 6-position terminal strip

as illustrated.

A1 A2 A3 A4 A5 A6

NORMALLY OPEN FLOAT SWITCH

(PERMANENTLY CLOSES TO DISABLE

DEHUMIDIFIER)

*If the dehumidier is installed in an attic or another location requiring

leak protection, the unit should be placed in a condensate pan with

a normally closed, condensate overow safety switch (oat switch).

Wire the oat switch to terminals A5 and A6 as shown.

HVAC SYSTEM

TERMINALS

EXTERNAL

DEHUMIDISTAT

TERMINALS

Wiring shows connection of external humidistat to dehumidier terminals.

Dehumidier will start HVAC blower upon a call for dehumidication. When

te call is satised, the dehumidier will act to turn o the HVAC blower

unless there is a call for cooling present. At that time, the HVAC

thermostat/air handler will be controlling the HVAC blower.

JUMPER

WIRE

DEHUMIDIFIER TERMINALS

Figure 4. Wiring Diagram

* If the dehumidier is installed in an attic or another location requiring leak protection, the unit should be placed in

a condensate pan with a normally closed, condensate overow safety switch (oat switch). Wire the oat switch to

Terminals A5 and A6 as shown.

Terminals A3 and A4 need to be powered to switch

the dehumidier 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 dehumidier pin A3 to 24VAC and

switches the dehumidier ON.

To implement a required interlock with the HVAC

fan control, interconnect dehumidier terminal strip

connections A3 to A2 as illustrated below. Then,

connect the dehumidier 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 dehumidier connections

A5 and A6. A5 and A6 can be used to interlock the

dehumidier to the condensate drain system. If the

water does not properly drain and the oat switch

closes, this will cause an error function to be triggered

by the dehumidier, which will cause the unit to

permanently shut off. The error condition can only be

reset by switching the dehumidier breaker off, then

back on or by unplugging power from the dehumidier.

Wiring

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Whole-House HVAC Congurations

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 rst provides separate control for a humidier

typically required during heating season, and the

second provides separate control for a dehumidier

during the air conditioning season. At the same

time, control systems have also become multi-

speed controllers as required to interoperate with

high efciency heat-pump and forced air systems.

TRION dehumidiers 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 specic combination thermostat/

humidistat. See the TRION website (www.trioniaq.

com) for interconnection diagrams covering the

most common control systems.

Operation of the dehumidier is supported with

both the unit control panel and optional humidistat

for whole-house congurations. In either case,

the dehumidier conguration is set using the

dehumidier control panel shown below.

Button Functions

1. Power Button ON/OFF

Use this button to turn the dehumidier ON and

OFF. Press once to turn the machine ON. You

Unit Controls

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 dehumidier, once congured for

operation, will automatically return to that mode

during power glitch or outage.

If the dehumidier 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 dehumidier 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 conguration. 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 Conguration Button

Press this button to switch the dehumidier between

Standalone Unit Conguration and Whole-House

Conguration. Whole-House Conguration 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. 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.

Figure 5. Dehumidier Control Panel

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3. Continuous Mode/Auto Defrost Light

When this light illuminates green, it indicates that

the dehumidier 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.

4. 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.

5. Whole-House Indicator Light

When the indicator light is green, it illustrates the

unit is congured for Whole-House Conguration

and not Standalone Mode. While in Whole-House

Conguration, the dehumidier is to be controlled

by a separate humidistat.

Configuration & Operation

Standalone Unit Conguration

After the dehumidier is properly installed, ducted,

connected to AC power, and condensate drain

plumbed, standard operation can be congured and

initiated.

Step 1

Push the power switch to turn the dehumidier

ON. TEST MODE can be initiated by switching

the dehumidier 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 Whole-

House light turns OFF, which indicates the unit is

congured for Standalone/Unit Mode of operation.

Figure 6. CD55 Operation Diagram Figure 7. CD90 Operation Diagram

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