Trane EDHUM098 Installation instructions

1
18-HE134D1-1A-EN
TS-1207 09/21 Rev B
Serial Number
Install Date
Sold By
Installation & Operation Instructions
The EDHUM098 and EDHUM120 are ventilating
dehumidiers that integrate into the heating and
cooling system to provide the ultimate in comfort,
health and property protection through:
+ Dehumidication
+Fresh Air Ventilation (Optional)
+Air Filtration
EDHUM098/EDHUM120
18-HE134D1-1A-EN

2Installation & Operation Instructions
Safety Instructions........................................................................................3
Dehumidier Set Up ......................................................................................4
Attaching Duct Collars..................................................................................5
Electrical Requirements................................................................................6
Drain Installation...........................................................................................7
Ducting to HVAC Systems ............................................................................8
Recommended HVAC System Installation............................................ 9
Fresh Air Ventilation....................................................................................10
Determine Ventilation Requirements ................................................... 11
Controls .......................................................................................................12
Air Filtration.................................................................................................14
MERV Rating Chart ............................................................................. 15
Service .........................................................................................................16
Warranty ......................................................................................................19
TABLE OF CONTENTS
Trane Technologies is committed to manufacturing quality products. To maintain our
standards, product specications may change without notice.

3
18-HE134D1-1A-EN
SAFETY INSTRUCTIONS
WARNING!WARNING!
THIS SYMBOL MEANS IMPORTANT INSTRUCTIONS. FAILURE TO HEED THEM CAN
RESULT IN SERIOUS INJURY OR DEATH.
READ THE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS CAREFULLY BEFORE
INSTALLING AND OPERATING THIS DEVICE. PROPER ADHERENCE TO THESE INSTRUCTIONS IS
ESSENTIAL TO OBTAIN MAXIMUM BENEFIT FROM YOUR VENTILATING DEHUMIDIFIER.
CAUTION!CAUTION!
THIS SYMBOL MEANS IMPORTANT INSTRUCTIONS. FAILURE TO HEED THEM CAN
RESULT IN INJURY OR MATERIAL PROPERTY DAMAGE.
Registrations
These Trane dehumidiers conform to unied standard UL 60335-2-40 and CSA standard C22.2.60335-
2-40.
CAUTION!CAUTION!
READ ALL INSTRUCTIONS BEFORE BEGINNING INSTALLATION.
ALWAYS USE CAUTION AND WEAR CUT RESISTANT GLOVES WHEN HANDLING SHEET METAL.
IMPROPER INSTALLATION MAY CAUSE PROPERTY DAMAGE OR INJURY.
INSTALLATION, SERVICE, AND MAINTENANCE MUST BE PERFORMED BY A QUALIFIED SERVICE
TECHNICIAN.
DEHUMIDIFIER IS HEAVY. HANDLE WITH CARE AND FOLLOW INSTALLATION INSTRUCTIONS.
NEVER OPERATE A UNIT WITH A DAMAGED POWER CORD. IF THE POWER CORD IS
DAMAGED, IT MUST BE REPLACED BY THE MANUFACTURER, ITS SERVICE AGENT, OR A SIMILARLY
QUALIFIED PERSON IN ORDER TO AVOID A HAZARD.
THIS APPLIANCE IS NOT INTENDED FOR USE BY PERSONS (INCLUDING CHILDREN) WITH REDUCED
PHYSICAL, SENSORY OR MENTAL CAPABILITIES, OR LACK OF EXPERIENCE
OR KNOWLEDGE, UNLESS THEY HAVE BEEN GIVEN SUPERVISION OR INSTRUCTION
CONCERNING THE USE OF THE APPLIANCE BY A PERSON RESPONSIBLE FOR THEIR
SAFETY. CHILDREN SHOULD BE SUPERVISED TO ENSURE THAT THEY DO NOT PLAY WITH THE
APPLIANCE.
WARNING!WARNING!
120 VOLTS MAY CAUSE SERIOUS INJURY FROM ELECTRIC SHOCK.
DISCONNECT ELECTRICAL POWER BEFORE STARTING INSTALLATION OR
SERVICING, AND LEAVE POWER DISCONNECTED UNTIL INSTALLATION OR
SERVICE IS COMPLETED.

4Installation & Operation Instructions
SPECIFICATIONS
6"
10"
19 1/2"
14 1/2"
10"
14 1/2"
19 1/2"
29 3/16"
26"
22 11/16"
32 3/8"
26"
19 1/2"
THE EDHUM098, THE PINNACLE
IN QUIET OPERATION, IS
DESIGNED TO PROVIDE
DEDICATED MOISTURE CONTROL,
FRESH AIR MECHANICAL
VENTILATION AND SUPERIOR AIR
FILTRATION.
Front Side Back
PERFORMANCE
ELECTRICAL
Power 670 watts @ 80°F and 60% RH
Supply Voltage 115 volt – 1 phase – 60 Hz
Current Draw 5.9 amps
Power Cord 9’, 115 VAC, Ground
Circuit Requirement 15 Amps
SPECIFICATIONS
Duct Connections 6” Round Inlet, 10” Round Inlet, 10” Round Outlet
Drain Connection 3/4” Threaded Female NPT
Refrigerant R410A, 1 lb. 9 oz.
Unit Dimensions 14.5”W x 19.5”H x 32.375”D
Unit Weight 81 lbs.
SHIPPING
Shipping Dimensions 23”W x 30”H x 40”D
Shipping Weight 95 lbs.
Pallet Quantity 4 per pallet
UPC Number 859029004649
Shipping Options UPS and LTL
FEATURES
+Features a horizontal conguration with
optional vertical discharge
+Designed for quiet operation
+Engineered for low temperature operation
providing comfort year round
+Use of DEH 3000/R digital control for
outdoor air ventilation and humidity control
+Superior MERV-13 ltration to improve
indoor air quality
+Ducting option for fresh outdoor air
ventilation
+Push button reset for transformer
protection
MODEL EDHUM098
Plug Type B
(USA, MEX, CAN, JPN)
Specications are subject to change without notice. Performance is based on pints / gallons per day @80°F/60%RH.
Sizing is based on 10 foot ceiling height. Unit dimensions and weight are with collars on.
Water Removal 98 Pints / 12.25 Gallons
Efciency 6.1Pints/kWh
Energy Factor 2.95 L/kWh
Blower 320 CFM @ 0.0” WG
297 CFM @ 0.2” WG
215 CFM @ 0.4” WG
Operating Temperature 49°F Min., 95°F Max.
Sizing Up to 2,300 Sq. Ft. / 23,000 Cu. Ft.
EDHUM098

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18-HE134D1-1A-EN
SPECIFICATIONS
14 3/8"
6"
10"
21"
10"
21"
14 3/8"
32 3/16"
25 13/16"
29"
22 13/16"
21" 24 3/16"
Top Supply Option
91 LBS.
THE EDHUM120
DELIVERS DEHUMIDIFIED
VENTILATION AND FEATURES A
HORIZONTAL CONFIGURATION TO
FIT ANY ATTIC, BASEMENT OR
CRAWL SPACE INSTALLATION.
Front Side Back
PERFORMANCE
ELECTRICAL
Power 840 watts @ 80°F and 60% RH
Supply Voltage 115 volt – 1 phase – 60 Hz
Current Draw 7.3 amps
Power Cord 9’, 115 VAC, Ground
Circuit Requirement 15 Amps
SPECIFICATIONS
Duct Connections 6” Round Inlet, 10” Round Inlet, 10” Round Outlet
Drain Connection 3/4” Threaded Female NPT
Refrigerant R410A, 1 lb. 10 oz.
Unit Dimensions 14.375”W x 21”H x 32.1875”D
Unit Weight 91 lbs.
SHIPPING
Shipping Dimensions 18.5”W x 23.5”H x 40”D
Shipping Weight 101 lbs.
Pallet Quantity 4 per pallet
UPC Number 859029004656
Shipping Options LT L
FEATURES
+Features a horizontal conguration with
optional vertical discharge
+Designed for quiet operation
+Engineered for low temperature operation
providing comfort year round
+Use of DEH 3000/R digital control for
outdoor air ventilation and humidity control
+Superior MERV-13 ltration to improve
indoor air quality
+Ducting option for fresh outdoor air
ventilation
+Push button reset for transformer
protection
MODEL EDHUM120
Plug Type B
(USA, MEX, CAN, JPN)
Specications are subject to change without notice. Performance is based on pints / gallons per day @80°F/60%RH.
Sizing is based on 10 foot ceiling height. Unit dimensions and weight are with collars on.
Water Removal 121 Pints / 15.125 Gallons
Efciency 6.1Pints/kWh
Energy Factor 2.95 L/kWh
Blower 350 CFM @ 0.0” WG
285 CFM @ 0.2” WG
210 CFM @ 0.4” WG
Operating Temperature 49°F Min., 95°F Max.
Sizing Up to 3,000 Sq. Ft. / 30,000 Cu. Ft.
EDHUM120

6Installation & Operation Instructions
Important Precautions
• The device is designed to be installed indoors in a space that is protected from rain and ooding.
• Install the unit with enough space to access one of the side panels for maintenance and service.
• Avoid directing the discharge air at people. The dehumidier should be used in the upright position.
• If used near a water source, be certain there is no chance the unit could fall into the water or get splashed and
that it is plugged into a dedicated circuit and Ground Fault Circuit Interrupter (GFCI) protected outlet.
• DO NOT use the dehumidier as a bench or table.
• DO NOT place the dehumidier directly on structural building members without vibration absorbers or
unwanted noise may result. Place the Dehumidier on supports to raise the base of the unit.
• A drain pan with a oat switch MUST be placed under the dehumidier if installed above a living area or above
an area where water leakage could cause damage.
Location Considerations
• Allow sucient clearance to handle the unit’s overall
dimensions as well as the necessary return and
supply ductwork to the unit.
• Allow sucient clearance for lter removal and to
prevent airow obstruction.
• Electrical service access will require the removal of
a side panel. Allow sucient clearance on a side of
the unit.
• Locate the dehumidier in an area where the cord’s
length (9') easily reaches a 115 VAC electrical outlet
with a minimum of a 15 Amp circuit capacity.
• Locate the dehumidier in an area where eld wiring
the control (low voltage) to the unit will be possible.
• It is recommended that a backdraft damper be
used in the discharge duct of the
Dehumidier, especially when connecting to the supply ducting system. The backdraft damper prevents supply
air from counter owing through the Dehumidier when it is not operating. The dehumidier’s
location should be chosen to allow installation of this accessory if necessary.
• The Dehumidier may be suspended from structural members with steel hanger straps or a suitable
alternative, ensuring the assembly supports the dehumidier’s base in its entirety. DO NOT hang the
Dehumidier from its cabinet.
• Allow for proper routing and drainage of needed drain pipes.
Electrical Service Access
(Either Side)
Filter
9' Power Cord
Top View
Minimum
Clearance
For Filter
(Either Side)
15"
6" Fresh Air Intake (Optional)
10" Return Air Duct
10" Supply Air Duct
A
B
C
B
C
Drain Port
A
6" Minimum Clearance
For Proper Airflow
DEHUMIDIFIER SET UP
Removal of Compressor Shipping Support
The Dehumidier uses a compressor to power the refrigeration
system. To protect the compressor and refrigeration system during
shipping, a plastic tie wrap secures it to the unit’s frame. Remove the
tie wrap by cutting the tie wrap and pulling from the unit as shown.
After removing tie wrap, insert plastic plugs provided into the holes.
CAUTION!CAUTION!
REMOVE COMPRESSOR SHIPPING TIE FROM THE UNIT. FAILURE TO REMOVE SHIPPING TIE
WILL CAUSE EXCESS VIBRATION TO BE TRANSMITTED TO THE FRAME.

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18-HE134D1-1A-EN
OUTLET DUCT
COLLAR WITH
BACK DRAFT
DAMPER
RETURN AIR
INLET DUCT
COLLAR
FRESH AIR
INLET DUCT
COLLAR
RETURN AIR
INLET DUCT
COLLAR
FRESH AIR
INLET DUCT
COLLAR
Front View
Horizontal Flow Through
(End Discharge)
AIR FLOW
Air
Flow
Rear View
Vertical Flow Through
(Top Discharge)
6" Fresh Air Inlet (Optional)
10" Return Air Inlet
10" Supply Air Outlet
A
B
C
A
B
C
A
B
C
Top View
C
6" Fresh Air Inlet (Optional)
10" Return Air Inlet
10" Supply Air Outlet
A
B
C
A
B
C
Air
Flow
Rear ViewFront View
A
B
ATTACHING DUCT COLLARS
OUTLET DUCT
COLLAR WITH
BACK DRAFT
DAMPER
RETURN AIR
INLET DUCT
COLLAR
FRESH AIR
INLET DUCT
COLLAR
RETURN AIR
INLET DUCT
COLLAR
FRESH AIR
INLET DUCT
COLLAR
Front View
Horizontal Flow Through
(End Discharge)
AIR FLOW
Air
Flow
Rear View
Vertical Flow Through
(Top Discharge)
6" Fresh Air Inlet (Optional)
10" Return Air Inlet
10" Supply Air Outlet
A
B
C
A
B
C
A
B
C
Top View
C
6" Fresh Air Inlet (Optional)
10" Return Air Inlet
10" Supply Air Outlet
A
B
C
A
B
C
Air
Flow
Rear ViewFront View
A
B
Fresh Air Ventilation Duct
Fresh air ventilation is optional. A 6" diameter duct is attached to the unit. The 6" duct should be capped if
fresh air is not desired. If setting up the unit to provide fresh air ventilation, see page 10.
Return Air Inlet
A 10" diameter duct collar is attached to the unit.
Supply Air Outlet
The back panel of the dehumidier can be rotated to allow for horizontal ow through or vertical ow through
of the supply air.
• Horizontal Flow Through
The unit ships congured for a horizontal ow through. A 10" diameter duct collar is attached to the unit.
• Vertical Flow Through
Remove the exhaust panel using a T25 torx bit. Rotate the panel so the exhaust collar is located on the top
of the unit. Align screw holes and snap the panel onto the base. Secure the exhaust panel to the base by
replacing the six screws.

8Installation & Operation Instructions
The Dehumidier plugs into a common grounded 115 VAC outlet. Locate the dehumidier in an area where the
cord’s length (9') easily reaches a 115 VAC electrical outlet with a minimum of 15 Amp circuit capacity. If used
in an area that may become wet, a GFCI protected circuit is recommended. Consult local electrical codes for
further information.
A variety of control devices can be used with this dehumidier. The control is to be located remotely from the
dehumidier and placed in the space to be conditioned. A low voltage (24 Volt) control MUST be used with the
Dehumidier and MUST be connected with low voltage (18-22 gauge) thermostat wire.
ELECTRICAL REQUIREMENTS
CAUTION!CAUTION!
DO NOT ALLOW THE 24V TERMINAL TO CONTACT THE COM/DMPR TERMINALS ON THE
DEHUMIDIFIER OR DAMAGE TO THE TRANSFORMER WILL RESULT.
Electrical Precautions
• Do not install the control where it may not accurately sense the relative humidity such as near HVAC
supply registers, near exterior doors, on an outside wall, near a window, or near a water source.
• The screw terminals on the Dehumidier and the control are labeled to prevent confusion.
• Be sure to consult the electrical schematic in the CONTROLS Section (page 12) of this manual or inside
the access panel of the Dehumidier before making control connections.
WARNING!WARNING!
THE REMOTE CONTROLS OF THE DEHUMIDIFIER ARE POWERED BY A LOW VOLTAGE CIRCUIT (24
VAC) AND MUST NEVER CONTACT OR BE CONNECTED TO A HIGH VOLTAGE CIRCUIT.
CAUTION!CAUTION!
SOME OF THE SCREW TERMINALS ON THE DEHUMIDIFIER MAY NOT BE USED WITH CERTAIN
CONTROLS AND SHOULD BE LEFT UNCONNECTED.
B98DHV Wiring Diagram B120DHV Wiring Diagram

9
18-HE134D1-1A-EN
The Dehumidier generates condensate.
Place a secondary drain pan with a oat switch under the dehumidier if it is suspended above a nished
area or above an area where water leakage could cause damage.
A drain trap is required for the dehumidier to drain properly. Install a 3/4" threaded male NPT adapter to
the drain pan. Install a drain pipe assembly utilizing 3/4" PVC pipe to transport the condensate to a drain.
Pitch of drain should be 1" per 10'.
An optional condensate pump kit is available for use with the Dehumidier and may be installed if lift is
required to dispose of condensate. Condensate is automatically pumped to a remote location when the
water level in the pump’s reservoir rises to close the oat switch.
The pump also contains a safety oat switch. The white leads from this switch extend from beneath the
pump cover. This switch should be installed in series with the eld wire that connects to the common lead
from the Dehumidier to the control panel. If the pump fails, this switch opens the common control circuit
and stops water production before the reservoir overows. Contact a qualied electrician to install the safety
oat switch to the Dehumidier.
Note: An optional condensate pump kit can be purchased through your dealer or online.
DRAIN INSTALLATION
Drain Installation
Drain
Trap
Secondary
Drain Pan
Drain
Port
Drain Trap
Secondary Drain Pan
Drain Port
Drain
Trap
Secondary
Drain Pan
Drain
Port
Drain Trap
Secondary Drain Pan
Drain Port
Side View

10 Installation & Operation Instructions
The recommended installation creates a separate return for the Dehumidier in a central area
of the structure. Duct the supply of the unit to the air supply of the existing HVAC system. Connect an
insulated duct from outside to the 6" collar of the Dehumidier to provide fresh make-up air.
DUCTING TO HVAC SYSTEMS
CAUTION!CAUTION!
DO NOT CONNECT WITH A STATIC PRESSURE GREATER THAN OR EQUAL TO +0.5 WG.
CONTACT TECHNICAL SUPPORT AT [phone] FOR ADDITIONAL DETAILS.
Ducting Considerations:
• All exible ducting connected to the Dehumidier should be UL listed.
• A short piece of exible ducting on all Dehumidier duct connections is recommended to reduce noise
and vibration transmitted to rigid ductwork in the structure.
• Use a minimum 10" diameter round or equivalent rectangular duct for total duct lengths of up to 25'. Use
a minimum 12" diameter round or equivalent rectangular duct for longer lengths.
• Grills or diusers on the duct ends must not excessively restrict airow.
• Eective dehumidication may require that ducting be branched to isolated, stagnant air ow areas. When
ducting to two or three areas, use 8" or larger diameter branch ducting. When ducting to four or more
areas, use 6" or larger diameter branch ducting. Provisions must be made to provide airow from supply
locations to the central return location. Proper air distribution is important to ensure even humidity control
and heat distribution throughout the structure.
• DO NOT locate the return in a bathroom or a kitchen.

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18-HE134D1-1A-EN
Recommended HVAC System Installation
DUCTING TO HVAC SYSTEMS
The recommended installation draws air from a dedicated indoor air return and ducts the supply of the
dehumidier to the air supply of the existing HVAC system. Utilize the optional fresh air ventilation duct to
provide outside air.
• Install a dedicated 10" air return for the Dehumidier from a central area of the structure.
• Install an insulated duct from outside to the 6" collar of the Dehumidier to provide fresh air
ventilation (optional).
• Duct the supply of the Dehumidier to the supply of the existing HVAC system with a backdraft damper.
• If the existing system has multiple returns, instead of installing a dedicated return to the
Dehumidier, it is possible to select one to disconnect from the existing HVAC system and use it for the
dedicated Dehumidier return. Select a return from a central location in the house that is always open to
the rest of the structure. DO NOT use a return from a room where doors are kept closed.
• DO NOT locate return in a bathroom or kitchen.
• Control should be located remotely from the dehumidier and placed in a central location.
Santa Fe
Supply
Air Handler
HVAC Supply
Dedicated Ultra-Aire 90 Return to A/C Supply
HVAC Return
Fresh Air Intake
(Optional)
Motorized
Damper
Indoor
Air Return
Backdraft
Damper
Dedicated Return to HVAC Supply
Supply

12 Installation & Operation Instructions
Fresh air ventilation is optional.
Fresh air may be brought into the structure by connecting an insulated duct from outside the structure to
the 6" inlet of the Dehumidier. A ventilation control is needed to program the time and frequency that the
unit introduces outside air. The time and frequency of ventilation should be based on the size and
occupancy of the residence.
• The fresh air ventilation duct should be connected to the 6" round collar on the front of the
Dehumidier.
• An insulated 6" diameter duct can provide up to 75 CFM of outside air.
• If a motorized damper is not being used, fresh air is controlled by the manual damper in the 6” collar of the
dehumidier.
• Performance of the Dehumidier can be impacted by inside and outside air conditions.
• When a 6" motorized damper is used, a digital control is required.
• It may be necessary to use 8" duct work if additional fresh air is required.
• In cold climates or at times when the dew point is low, ventilation can be used to dehumidify the structure,
making the Dehumidier capable of year-round drying.
FRESH AIR VENTILATION
OUTLET DUCT
COLLAR WITH
BACK DRAFT
DAMPER
RETURN AIR
INLET DUCT
COLLAR
FRESH AIR
INLET DUCT
COLLAR
RETURN AIR
INLET DUCT
COLLAR
FRESH AIR
INLET DUCT
COLLAR
AIR FLOW
Air
Flow
Outdoor Air
90°F, 65%RH
Indoor Air
70°F, 50%RH
Mixed Air
Mixed Air
75°F
75°F
65%RH
65%RH
Mixed Air
75°F
65%RH
Outlet Air
75°F, 65%RH
Hot Climate
6" Fresh Air Inlet
(Optional)
10" Return Air Inlet
10" Supply Air Outlet
A
B
C
A
B
C
Outdoor Air
30°F, 65%RH
Indoor Air
70°F, 50%RH
Outlet Air
59°F, 51%RH
Cold Climate
A
B
C
6" Fresh Air Inlet
(Optional)
10" Return Air Inlet
10" Supply Air Outlet
A
B
C
Mixed Air
Mixed Air
59°F
59°F
51%RH
51%RH
Mixed Air
59°F
51%RH
Fresh Air Ventilation With Dehumidier O and Fan Only Operation
Outside air mixes with the dehumidier’s return air before being supplied to the home. Outside
temperature, inside temperature and relative humidity will impact the combined outlet air conditions.
Note: Temperature and relative humidity may vary depending on duct distribution scheme.

13
18-HE134D1-1A-EN
Option 1: Calculating Airflow Requirement Using ASHRAE 62.2-2016 Airflow Equation
ASHRAE Airow in CFM = [House Area in Sq.Ft. x 0.03] + [(Number of Bedrooms +1) x 7.5]
NOTE: Use ‘Number of Bedrooms + 1’ or ‘Number of Occupants’, whichever is larger.
Example 1: Number of Bedrooms + 1
1800 square foot house with 3 bedrooms, 4 occupants = [1800 X 0.03] + [(3+1) X 7.5] = 84 CFM
Example 2: Number of Occupants
1800 square foot house with 3 bedrooms, 5 occupants = [1800 X 0.03] + [5 X 7.5] = 91.5 CFM
Record the required CFM ____________
FRESH AIR VENTILATION
Determine Ventilation Requirements
The MINIMUM ventilation requirement is calculated using ASHRAE 62.2-2016. Use one or both of the options below
to determine your ventilation requirement. Follow all local and national building and safety codes.
Option 2: Calculating Airflow Requirement Using Table 4.1 from ASHRAE 62.2-2019
Table 4.1 from ASHRAE 62.2-2019
Record the required CFM ____________
Ventilation Air Requirements, CFM
Floor Area
(ft2)
< 500
501 - 1000
1001 - 1500
1501 - 2000
2001 - 2500
2501 - 3000
3001 - 3500
3501 - 4000
4001 - 4500
4501 - 5000
1
30
45
60
75
90
105
120
135
150
165
2
38
53
68
83
98
113
128
143
158
173
3
45
60
75
90
105
120
135
150
165
180
4
53
68
83
98
113
128
143
158
173
188
5
60
75
90
105
120
135
150
165
180
195
Number of Bedrooms

14 Installation & Operation Instructions
A control must be used with the Dehumidier. Santa Fe oers the DEH 3000 proprietary control. The DEH
3000 allows homeowners to monitor and control relative humidity and proper ventilation levels in their
home. This control is also available with a remote sensing option.
Note: The DEH 3000 is sold separately and can be purchased through your local dealer or online. Other
thermostats are compatible with the Dehumidier.
CONTROLS
CAUTION!CAUTION!
DO NOT ALLOW THE 24V TERMINAL FROM THE DEHUMIDIFIER TO CONTACT
THE COM TERMINAL ON THE DEHUMIDIFIER OR DAMAGE TO THE
TRANSFORMERS WILL RESULT.
Circuit Breaker
To prevent damage to the 24 volt control
transformer, the Dehumidier comes with a
resettable circuit breaker. Check wiring for any
electrical short and repair before
resetting breaker. Resetting the circuit breaker
without correcting the electrical short may
result in transformer damage. Be sure to
check the electrical schematic in this manual
or inside the access panel of the
Dehumidier before making any control
connections. The reset button for the circuit
breaker can be found on the back of the unit.
Wiring Controls
Rear View
EDHUM120
Circuit Breaker Reset Button
EDHUM098

15
18-HE134D1-1A-EN
CONTROLS
Control Connections
The control and the Dehumidier are labeled to prevent confusion. Depending on the control, some of
the screw terminals on the Dehumidier may not be used. Be sure to consult the electrical schematic in
this manual or inside the access panel of the Dehumidier before
making control connections.
A low voltage control must be used with the Dehumidier.
NOTE: 18 gauge wire needed between the Dehumidier and the external control.
Compressor ON / Fan ON Make contact between 24V and DEHU terminals
Compressor OFF / Fan ON Make contact between 24V and FAN terminals
Power HVAC Accessory Connect the accessory to the DMPR (OR COM) and 24V terminals
Between the COM lead and the 24V TERMINAL is a 40VA transformer. This low voltage power source
powers the relay coils which control the fan and compressors. This 24VAC transformer can also be
used to power HVAC accessories external to the dehumidier.
COM 24VAC Power Transformer Neutral Side
FAN Fan Control
24V Transformer High Side
DEHU Dehumidication (Fan and Compressor) Control
DMPR 24VAC Power Transforme Neutral Side
* Spare Terminal (Open)
EDHUM098 Terminal Block Control Operation:
COM 24VAC Power Transformer Neutral Side
FAN Fan Control
24V Transformer High Side
DEHU Dehumidication (Fan and Compressor) Control
FLOAT External Low Voltage Float Switch or Water Sensor
(Use Normally Closed Switch)
FLOAT External Low Voltage Float Switch or Water Sensor
(Use Normally Closed Switch)
EDHUM120 Terminal Block Control Operation:

16 Installation & Operation Instructions
The Dehumidier is equipped with a MERV-13 (Dimensions: 1.75” x 14.00” x 17.50”) lter. The lter should be
checked and replaced every three to six months. Operating the unit with a dirty lter will reduce dehumidier
capacity and eciency.
DO NOT operate the unit without the recommended lter. Filter non-compliance voids the product warranty.
AIR FILTRATION
Changing the Filter
For greatest ltration and eciency of the Dehumidier, it is recommended the air lter be
replaced every three to six months with a MERV-13 lter.
Step 1: Pull back slide latch to swing lter door open.
Step 2: Remove the lter by gently pulling it straight out of the unit. Insert new lter by gently pushing it
straight into the unit. Make sure the AIR FLOW arrow on the lter is pointing into the unit.
Step 3: Insert lter door into tabs
and swing door closed to lock
the latch into place.
Filter
Fresh Air
Intake
(Optional)
Return
Side View
Filter
Top View
Side View
Magnetic Strip
Optional Fresh
Air Intake
Return
Supply
Top View
Supply
Top View
Filter
Fresh Air
Intake
(Optional)
Return
Filter
Return
Filter
To Remove,
pull out straight.
Side View
Filter Door
Fresh Air Intake
(Optional)
Return
Slide Latch
Filter
Side View
Filter
Door
Tabs
Filter
Top View
Side View
Magnetic Strip
Optional Fresh
Air Intake
Return
Supply
Top View
Supply
Top View
Filter
Fresh Air
Intake
(Optional)
Return
Filter
Return
Filter
To Replace,
push in straight.
Front View Front View
CAUTION!CAUTION!
MAKE SURE UNIT IS OFF BEFORE CHANGING THE FILTER.
Side View

17
18-HE134D1-1A-EN
AIR FILTRATION
MERV Rating Chart
Table Data Source: United States Environmental Protection Agency
Standard 52.5 Minimum
Efficiency Reporting
Value
Dust Spot
Efficiency Arrestance
Typical Controlled
Contaminant
Typical Applications and
Limitations Typical Air Filter/Cleaner Ty pe
20 n/a n/a < 0.30 pm Particle Size Cleanrooms
>99.999% eff. On .10-.20 pm
Particles
19 n/a n/a Virus (unattached) Radioactive Materials
p
Particles
18 n/a n/a Carbon Dust Pharmaceutical Man.
p
Particulates
17 n/a n/a All Combustion Smoke Carcinogenetic Materials >99.97% eff. On .30 pm Particles
16 n/a n/a .30-1.0 pm Particle Size General Surgery Bag Filter - Nonsupported
15 >95% n/a All Bacteria Hospital Inpatient Caremicrofine fiberglass or
14 90-95% >98% Most Tobacco Smoke Smoking Lounges
synthetic media, 12-36 in. deep,
6-12 pockets.
13 89-90% >98% Proplet Nuceli (Sneeze) Superior Commercial Buildings
Box Filter - Rigid Style Cartridge
Filters 6 to 12" deep may use
lofted or paper media.
12 70-75% >95% 1.0-3.0 pm Particle Size Superior Residential Bag Filter - Nonsupported
Legionella microfine fiberglass or
1160-65% >95% Humidifier Dust Better Commercial Buildings
synthetic media, 12-36 in. deep,
6-12 pockets.
Lead Dust
10 50-55% >95% Milled Flour
Box Filter - Rigid Style Cartridge
Filters 6 to 12" deep may use
lofted or paper media.
Auto Emissions Hospital Laboratories
940-45% >90% Welding Fumes
830-35% >90% 3.0-10.0 pm Particle Size Commercial Buildings
Pleated Filters-Disposable,
extended surface area, thick with
Mold Spores
cotton-polyester blend media,
cardboard frame.
725-30% >90% Hair Spray Better Residential
Fabric Protector
Cartridge Filters-Graded density
viscous coated cube or pocket
filters, synthetic media.
6<20% 85-90% Dusting Aids Industrial Workplace
Cement Dust
Throwaway - Disposable
synthetic panel filter.
5<20% 80-85% Pudding Mix Paint Booth Inlet
4<20% 75-80% >10.0 pm Particle SizeMinimal Filtration
Throwaway - Disposable
fiberglass or synthetic panel filter.
Pollen
3<20% 70-75% Dust Mites Residential Washable - Aluminum Mesh.
Sanding Dust
2<20% 65-70% Spray Paint Dust
Textile Fibers Window A/C Units
Electrostatic-Self charging
woven panel filter.
1<20% <65% Carpet Fibers
Standard 52.5 Minimum
Efficiency Reporting
Value
Dust Spot
Efficiency Arrestance
Typical Controlled
Contaminant
Typical Applications and
Limitations Typical Air Filter/Cleaner Type

18 Installation & Operation Instructions
SERVICE
Symptom Possible Reason Troubleshooting Procedure
CAUTION!CAUTION!
TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED HVAC TECHNICIAN.
Troubleshooting
Troubleshooting Procedure for Control
Related Issues
This method of diagnosis will test the 3 main
components of the control circuit individually to
indicate any potential problems. This is to be used
when the control will not activate the main unit.
1. Detach eld control wiring connections from
the terminals on the main unit.
2. Connect the 24V and FAN terminals
together; only the fan should run. Disconnect
the terminals.
3. Connect the 24V and DEHU terminals
together; fan and compressor should run.
Disconnect the terminals.
4. If this test works, the main unit is working
correctly from a control standpoint.
5. Reconnect eld control wiring to the terminals
on the main unit.
6. Remove the control panel cover and detach
the eld wiring from the control connections.
7. Connect the 24V and FAN terminals together;
only the fan should run. Disconnect the terminals.
8. Connect the 24V and DEHU terminals together;
fan and compressor should run. Disconnect the
terminals.
9. If this test works, then the eld control wiring
is ok.
10. If the problem persists, then the control is
most likely faulty.
WARNING!WARNING!
ELECTRICAL SHOCK HAZARD:
ELECTRICAL POWER MUST BE PRESENT
TO PERFORM SOME TESTS. THESE TESTS
SHOULD BE PERFORMED BY A QUALIFIED
SERVICE PERSON.
Neither fan nor
compressor
running.
Dehumidication
is being called for.
Compressor is
not running.
Dehumidication
is being called for.
Fan is running.
1. Defective compressor
run capacitor.
2. Loose connection in
compressor circuit.
3. Defective compressor
overload.
4. Defective compressor.
5. Defrost thermostat open.
Compressor
cycles on and o.
Dehumidication is
being called for.
1. Low ambient
temperature and/or
humidity causing unit
to cycle through
defrost mode.
2. Defective compressor
overload.
3. Defective compressor.
4. Defrost thermostat
defective.
5. Dirty air lter(s) or air
ow restricted.
6. Defective fan or relay.
1. Dehumidier unplugged
or no power to outlet.
2. Humidity control set
too high.
3. Loose connection in
internal or control wiring.
4. Defective compressor
relay.
5. Defective control
transformer.
6. Open circuit between
FLOAT terminals.

19
18-HE134D1-1A-EN
Troubleshooting (Continued)
SERVICE
Symptom Possible Reason Troubleshooting Procedure
Troubleshooting Procedure for Performance
Related Issues
This method of diagnosis is used to function
check the internal components in the dehumidi-
er. This is to be used when a performance issue
is suspected.
1. Set the humidity controller all the way to the
most humid setting or o position – Did the
unit shut o?
2. If yes, turn the fan setting to the ON position –
does the fan start?
3. If fan starts, leave in the fan ON position and
set the humidity all the way to driest setting.
May have to wait 5 minutes for the compressor
to start.
4. Listen for a distinct buzzing/humming sound
of a compressor starting up – do you hear this
noise?
5. If compressor is running and continues to run,
after about 15 minutes you should feel a slight
increase in air temperature being discharged
out of the discharge air side of the unit.
6. If so, depending on your environmental
conditions (temp/Rh%), you should see some
water production out of the hose within
30 minutes or so. (Note: If the room
temperature is 55 degrees or below and/or
in area of low relative humidity, the
dehumidier will produce little to no water.)
7. Collecting the water removed in a 24 hour period
will give a measurement of performance.
WARNING!WARNING!
ELECTRICAL SHOCK HAZARD:
ELECTRICAL POWER MUST BE PRESENT
TO PERFORM SOME TESTS. THESE TESTS
SHOULD BE PERFORMED BY A QUALIFIED
SERVICE PERSON.
Fan is not running.
Dehumidication
or fan is being
called for.
1. Loose connection in
fan circuit.
2. Obstruction prevents
fan impeller rotation.
3. Defective fan.
4. Defective fan relay.
Low dehumidication
capacity (evaporator
is frosted
continuously).
Dehumidication is
being called for.
1. Defrost thermostat loose
or defective.
2. Low refrigerant charge.
3. Dirty air lter(s) or air ow
restricted.
4. Excessively restrictive
ducting connected to unit.
No ventilation.
Ventilation is being
called for.
1. Loose connection in
ventilation control circuit.
2. Loose connection in
damper power circuit.
3. Defective fresh air
damper.
Dehumidier
removes some
water, but not as
much as expected.
1. Air temperature and/or
humidity have dropped.
2. Humidity meter and or
thermometer used are
out of calibration.
3. Unit has entered defrost
cycle.
4. Dirty air lter(s) or air ow
is restricted.
5. Defective defrost
thermostat.
6. Low refrigerant charge.
7. Air leak such as loose
cover or ducting leaks.
8. Defective compressor.
9. Restrictive ducting.

20 Installation & Operation Instructions
WARNING!WARNING!
SERVICING THE DEHUMIDIFIER WITH ITS HIGH PRESSURE REFRIGERANT
SYSTEM AND HIGH VOLTAGE CIRCUITRY PRESENTS A HEALTH HAZARD WHICH COULD
RESULT IN DEATH, SERIOUS BODILY INJURY, AND/OR PROPERTY DAMAGE. SERVICE MUST
BE PERFORMED BY A QUALIFIED SERVICE TECHNICIAN.
If the refrigerant charge is lost due to service or a leak, the leak should be repaired and a new charge must
be accurately weighed in. If any of the old charge is left in the system, it must be recovered before weighing
in the new charge. Refer to the unit nameplate for the correct charge weight and refrigerant type.
Refrigerant Charging
SERVICE
Symptom Possible Reason Troubleshooting Procedure
CAUTION!CAUTION!
TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED HVAC TECHNICIAN.
Troubleshooting (Continued)
1. Verify power to the unit at power outlet.
2. Look for short in control wiring.
3. Check wire connections at control and unit.
4. Reset circuit breaker button on dehumidier.
WARNING!WARNING!
ELECTRICAL SHOCK HAZARD:
ELECTRICAL POWER MUST BE PRESENT
TO PERFORM SOME TESTS. THESE TESTS
SHOULD BE PERFORMED BY A QUALIFIED
SERVICE PERSON.
Control not
powering
dehumidier.
1. No power to
dehumidier.
2. 24 volt circuit breaker
tripped or faulty
transformer.
3. Loose or missed wired
control wires at
humidity control.
4. Loose or missed wired
control wires at unit.
5. Humidity control
defective.