Whirlpool Dehumidifier WGDH160UH User Manual

WHOLE HOUSE DEHUMIDIFIER  
INSTALLATION INSTRUCTIONS  
Table of Contents  
WHOLE HOUSE DEHUMIDIFIER SAFETY...................................1  
Install Dehumidifier—Existing Furnace or Air Handler  
with Dry Air to the Basement or Crawl Space .............................8  
Install Dehumidifier—Attic Installation .......................................10  
Complete Installation..................................................................11  
Make Electrical Connections .....................................................11  
INSTALLATION REQUIREMENTS................................................2  
Tools and Parts ............................................................................2  
Location Requirements................................................................2  
Installation Configurations ...........................................................4  
Ductwork Requirements ..............................................................5  
Electrical Requirements ...............................................................5  
SEQUENCE OF OPERATION ......................................................14  
Whole House Dehumidifier.........................................................14  
WHOLE HOUSE DEHUMIDIFIER MAINTENANCE....................14  
Pre-filter......................................................................................14  
HEPA or MERV 11 Air Filter .......................................................14  
Fresh Air Return..........................................................................15  
UVC Germicidal Light.................................................................15  
INSTALLATION INSTRUCTIONS..................................................5  
Inspect Shipment.........................................................................5  
Install Dehumidifier—Existing Furnace or Air Handler.................6  
Install Dehumidifier—Existing Furnace or Air Handler  
with Fresh Air Duct.......................................................................7  
ASSISTANCE OR SERVICE.........................................................16  
WHOLE HOUSE DEHUMIDIFIER SAFETY  
Your safety and the safety of others are very important.  
We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety  
messages.  
This is the safety alert symbol.  
This symbol alerts you to potential hazards that can kill or hurt you and others.  
All safety messages will follow the safety alert symbol and either the word “DANGER” or “WARNING.”  
These words mean:  
You can be killed or seriously injured if you don't immediately  
follow instructions.  
DANGER  
You can be killed or seriously injured if you don't  
instructions.  
follow  
WARNING  
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can  
happen if the instructions are not followed.  
Whirlpool Gold®Models WGDH160UH and WGDV160UH  
Whirlpool® Models WPDH160XS and WPDV160XS  
400-1014  
 
Horizontal Installation Dimensions  
32"  
A
A
Top View  
16"  
B
22¹⁄₂"  
49"  
22¹⁄₂"  
20⁵⁄₈"  
C
D
I
18⁷⁄₈"  
20⁵⁄₈"  
G
H
F
E
Left-Side View  
Front View  
Right-Side View  
A. Suspension holes for ³⁄₈"-16 all-thread rod (4)  
B. 10" round discharge air outlet  
C. Low voltage entry  
D. Line voltage entry  
E. ³⁄₄" PVC condensate drain outlet  
F. Electrical access panel  
G. Internal component access panel  
H. Filter access panel  
I. Duct flange on return air inlet  
Vertical Installation Dimensions—Upflow/Counterflow  
21³⁄₁₆"  
22"  
19⁵⁄₈"  
Top View  
A
A
24" Minimum  
Clearance for Optimum  
Service Access  
B
B
G
H
56"  
C
22¹⁄₄"  
D
F
E
E
I
F
Front View  
Right-Side View  
A. Return air inlet  
D. Line voltage entry  
G. Internal component access panel  
B. Filter access panel  
C. Low voltage entry  
E. Right-side discharge air outlet  
cover  
F. Electrical access panel  
H. ³⁄₄" PVC condensate drain outlet  
I. 10" round discharge air outlet, left side  
(shipped right, convertible to left or rear)  
3
 
Installation Configurations  
For ease in installation, it is best to make any necessary  
Suspended Cabinet Installation  
configuration changes before setting the dehumidifier in place.  
See “Installation Configuration Options” for the specific  
installation.  
NOTE: Ensure there is adequate room to remove the dehumidifier  
access panels. See Minimum Clearance Requirements chart in  
“Location Requirements.”  
Vertical Installations  
The suspending installation uses field-fabricated ³⁄₈"-16 all-  
thread rod passing through the top panel and connected to  
the dehumidifier base.  
Counterflow/Side Discharge  
The dehumidifier must be supported on the bottom only and set  
on a field-supplied supporting frame with a return air inlet  
opening. Securely attach the dehumidifier to the supporting  
frame.  
The ³⁄₈"-16 all-thread rod should be attached to the  
appropriate lengths of angle iron or equivalent structural steel  
which is attached to building structure capable of supporting  
the weight of the dehumidifier.  
Installation Configuration Options  
If the dehumidifier is not suspended by ³⁄₈"-16 all-thread rod,  
use the grommet plugs to cover the holes in the grommets.  
Installation Configuration Options  
A
B
A
B
C
C
A. Left discharge  
B. Right discharge  
C. Rear discharge  
A. ³⁄₈"-16 all-thread rod  
B. Grommet  
C. Top panel  
Horizontal Installations  
Horizontal installations can be only right-hand air supply. The  
cabinet must be supported by the building structure to ensure  
cabinet integrity. Ensure that there is adequate room to remove  
the access panels if installing in the horizontal position. See  
Minimum Clearance Requirements in “Location Requirements.”  
A
B
C
Installation Configuration Options  
A
A. Left to right airflow  
A. ³⁄₈"-16 all-thread rod  
B. ³⁄₈" threaded hole  
C. Dehumidifier base  
4
 
Ductwork Requirements  
Electrical Requirements  
Install the conditioned air plenum, ducts and air filters (not  
provided) in accordance with NFPA 90B Standard for the  
Installation of Warm Air Heating and Air-Conditioning Systems  
(latest edition).  
WARNING  
For the best performance, draw air from the central part of the  
building and return it to the outer areas of the building.  
Insulated flexible duct may be used on the discharge air supply  
side of the dehumidifier to reduce air noise from the fan.  
Flexible duct is recommended on all connections to reduce noise  
and vibration transmitted to rigid ductwork in the building.  
Electrical Shock Hazard  
Use 12 gauge solid copper wire.  
Duct Size  
Electrically ground dehumidifier.  
Connect ground wire to green ground lug.  
For supply duct lengths up to 25 ft, use a minimum of 10"  
diameter round or equivalent rectangular duct. For return  
duct lengths up to 25 ft, use a minimum of 12" diameter  
round or equivalent rectangular duct.  
Failure to follow these instructions can result in death,  
fire, or electrical shock.  
For supply duct lengths longer than 25 ft, use a minimum of  
12" diameter or equivalent rectangular duct. Grilles or  
diffusers installed on the duct ends should not restrict airflow.  
For return duct lengths longer than 25 ft, use a minimum of  
14" diameter round or equivalent rectangular duct.  
Recommended Grounding Method  
A 110- to 120-volt, 14.5 FLA amps, 60 Hz, AC only 20-amp  
fused, grounded electrical supply is required.  
For two or three isolated areas that do not have any heat or  
air conditioning ductwork, use a minimum of 8" diameter  
branch duct to each area.  
All field wiring must be done in accordance with National  
Electrical Code requirements, applicable requirements of UL,  
or local codes, where applicable.  
For four or more isolated areas with stagnant air, use a  
minimum of 6" diameter branch duct to each area.  
INSTALLATION INSTRUCTIONS  
Inspect Shipment  
WARNING  
WARNING  
Excessive Weight Hazard  
Use two or more people to move and install  
dehumidifier.  
Fire Hazard  
Failure to do so can result in back or other injury.  
Read and follow all instructions provided for  
installation, service, alteration, or maintenance.  
This whole house dehumidifier is shipped in one package,  
completely assembled and wired.  
Failure to follow these instructions can result in death  
or fire.  
1. Check the dehumidifier rating plate to confirm specifications  
are as ordered.  
2. Upon receipt of equipment, inspect it for possible shipping  
damage. Examine the dehumidifier inside the carton if the  
carton is damaged.  
If damage is found, it should be noted on the carrier’s freight bill.  
Damage claims should be filed with the carrier immediately.  
Claims of shortages should be filed with the seller within 5 days.  
NOTE: If any damages are discovered and reported to the carrier,  
do not install the dehumidifier, because your claim may be  
denied.  
5
 
Install Dehumidifier—Existing Furnace or Air Handler  
2. Place the dehumidifier in final location. See “Location  
Requirements.”  
WARNING  
3. Attach ³⁄₄" PVC pipe to the condensate drain outlet. See  
“Location Requirements.”  
4. Run the PVC pipe to an outdoor drain. Any horizontal run of  
drain pipe must have an anti-siphon vent for it to drain  
properly.  
5. If needed, install a condensate pump kit (optional).  
6. Using a 10" duct, attach the discharge air supply on the  
dehumidifier to the return air supply on the existing furnace or  
air handler.  
Electrical Shock Hazard  
Disconnect power before servicing.  
Replace all parts and panels before operating.  
Failure to do so can result in death or electrical shock.  
NOTE: Install ductwork in accordance with NFPA 90B  
Standard for the Installation of Warm Air Heating and Air  
Conditioning Systems (latest edition) and any local codes.  
7. Attach the return air supply on the dehumidifier to the return  
air supply on the existing furnace or air handler near the  
return air grille.  
NOTE: When using the existing duct system, the dehumidifier fan  
and the existing system fan must be interlocked by using the low  
voltage interlock method provided with the dehumidifier. See the  
wiring diagrams in the “Electrical Connections” section.  
NOTE: Do not draw air directly from the kitchen, bathroom,  
laundry room or unconditioned isolated basement.  
1. Disconnect power.  
WARNING  
Excessive Weight Hazard  
Use two or more people to move and install  
dehumidifier.  
Failure to do so can result in back or other injury.  
Horizontal Installation  
B
A
C
D
A. Return air from house  
B. Existing return air duct  
C. Dehumidifier  
D. To existing furnace or air handler  
6
 
Vertical Installation  
B
A
C
D
A. Return air from house  
B. Existing return air duct  
C. Dehumidifier  
D. To existing furnace or air handler  
Install Dehumidifier—Existing Furnace or Air Handler with Fresh Air Duct  
NOTE: Locate the outside air intake away from undesirable  
fumes, gases or odors.  
1. Disconnect power.  
Advantages of fresh air ventilation:  
WARNING  
Outside air is filtered before entering the building.  
Outside air will be dehumidified by the dehumidifier before  
entering the building.  
Excessive Weight Hazard  
Use two or more people to move and install  
dehumidifier.  
Outside air entering the building through the dehumidifier  
helps equalize pressure to prevent humid air from entering  
the building through other means.  
Failure to do so can result in back or other injury.  
In cold climates, outside air can have a lower dew point and  
can lower humidity inside the building without running the  
dehumidifier.  
2. Place the dehumidifier in final location. See “Location  
Requirements.”  
3. Attach ³⁄₄" PVC pipe to the condensate drain outlet. See  
“Location Requirements.”  
WARNING  
4. Run the PVC pipe to an outdoor drain. Any horizontal run of  
drain pipe must have an anti-siphon vent for it to drain  
properly.  
5. If needed, install a condensate pump kit (optional).  
6. Using a 10" duct, attach the discharge air supply on the  
dehumidifier to the return air supply on the existing furnace or  
air handler.  
Electrical Shock Hazard  
NOTE: Install ductwork in accordance with NFPA 90B  
Standard for the Installation of Warm Air Heating and Air  
Conditioning Systems (latest edition) and any local codes.  
Disconnect power before servicing.  
Replace all parts and panels before operating.  
Failure to do so can result in death or electrical shock.  
7. Attach the return air supply on the dehumidifier to the return  
air supply on the existing furnace or air handler near the  
return air grille.  
NOTE: Do not draw air directly from the kitchen, bathroom,  
NOTE: When using the existing duct system, the dehumidifier fan  
and the existing system fan must be interlocked by using the low  
voltage interlock method provided with the dehumidifier. See the  
wiring diagrams in the “Electrical Connections” section.  
laundry room or unconditioned isolated basement.  
8. Using a 6" diameter insulated duct, attach to the return  
plenum on the dehumidifier.  
9. Install the outside air intake in a location away from  
undesirable fumes, gases and odors.  
10. Install a screened intake hood on the outside air intake duct.  
Be sure screen is clear of debris at all times to ensure proper  
air flow to dehumidifier.  
11. Install a manual damper on the return air side of the  
dehumidifier.  
NOTE: If desired, a power damper may be installed.  
7
 
Horizontal Installation  
B
A
D
C
G
E
H
F
A. Return air from house  
E. Power damper (optional)  
F. Manual damper (required)  
G. Outside air  
B. Existing return air duct  
C. To existing furnace or air handler  
D. Dehumidifier  
H. Screened intake hood  
Vertical Installation  
A
B
G
H
E
F
D
C
A. Return air from house  
B. Existing return air duct  
C. To existing furnace or air handler  
D. Dehumidifier  
E. Power damper (optional)  
F. Manual damper (required)  
G. Outside air  
H. Screened intake hood  
Install Dehumidifier—Existing Furnace or Air Handler with Dry Air to the Basement or Crawl Space  
To reduce the humidity that can be found under buildings and in  
damp basements, install a supply air duct from the dehumidifier  
to the basement or crawl space.  
NOTE: When using the existing duct system, the dehumidifier fan  
and the existing system fan must be interlocked by using the low  
voltage interlock method provided with the dehumidifier. See the  
wiring diagrams in the “Electrical Connections” section.  
1. Disconnect power.  
WARNING  
WARNING  
Excessive Weight Hazard  
Use two or more people to move and install  
dehumidifier.  
Electrical Shock Hazard  
Failure to do so can result in back or other injury.  
Disconnect power before servicing.  
Replace all parts and panels before operating.  
Failure to do so can result in death or electrical shock.  
2. Place the dehumidifier in final location. See “Location  
Requirements.”  
8
 
3. Attach ³⁄₄" PVC pipe to the condensate drain outlet. See  
NOTE: Install ductwork in accordance with NFPA 90B  
Standard for the Installation of Warm Air Heating and Air  
Conditioning Systems (latest edition) and any local codes.  
“Location Requirements.”  
4. Run the PVC pipe to an outdoor drain. Any horizontal run of  
drain pipe must have an anti-siphon vent for it to drain  
properly.  
7. Attach the return air supply on the dehumidifier to the return  
air supply on the existing furnace or air handler near the  
return air grille.  
5. If needed, install a condensate pump kit (optional).  
NOTE: Do not draw air directly from the kitchen, bathroom,  
6. Using a 10" duct, attach the discharge air supply on the  
dehumidifier to the return air supply on the existing furnace or  
air handler.  
laundry room or unconditioned isolated basement.  
8. Attach insulated flexible duct to the discharge air supply on  
the dehumidifier.  
9. Run duct to the basement or crawl space of the building.  
Horizontal Installation  
B
A
G
C
I
J
D
H
F
F
E
A. Return air from house  
D. Backflow damper (required)  
H. Power damper (optional)  
B. Existing return air duct  
C. To existing furnace or air handler  
E. Dry air to crawl space or unconditioned isolated basement  
F. Manual damper (required)  
I. Outside air  
J. Screened intake hood  
G. Dehumidifier  
Horizontal Installation with Added Return  
A
B
C
J
K
I
G
H
D
G
E
F
A. Added return  
E. Back flow damper (required)  
F. Dry air to crawl space or unconditioned isolated basement  
G. Manual damper (required)  
I. Power damper (optional)  
J. Outside air  
K. Screened intake hood  
B. Return air from house  
C. Existing return air duct  
D. To existing furnace or air handler  
H. Dehumidifier  
9
 
Install Dehumidifier—Attic Installation  
3. Attach ³⁄₄" PVC pipe to the condensate drain outlet. See  
“Location Requirements.”  
WARNING  
4. Run the PVC pipe to an outdoor drain. Any horizontal run of  
drain pipe must have an anti-siphon vent for it to drain  
properly.  
5. If needed, install a condensate pump kit (optional).  
6. Place a secondary drain pan under the dehumidifier.  
7. Using a 10" duct, attach the discharge air supply on the  
dehumidifier to the return air supply on the existing lower  
level furnace or air handler.  
Electrical Shock Hazard  
Disconnect power before servicing.  
NOTE: Install ductwork in accordance with NFPA 90B  
Standard for the Installation of Warm Air Heating and Air  
Conditioning Systems (latest edition) and any local codes.  
Replace all parts and panels before operating.  
Failure to do so can result in death or electrical shock.  
8. Attach the return air supply on the dehumidifier to the return  
air supply on the existing upper level furnace or air handler  
near the return air grille.  
NOTES:  
Install a secondary drain pan with a drain or float interrupt  
under the dehumidifier to prevent damage to ceiling or living  
space below.  
NOTE: Do not draw air directly from the kitchen, bathroom,  
laundry room or unconditioned isolated basement.  
9. If desired, install a fresh air duct. See “Install Dehumidifier—  
When using the existing duct system, the dehumidifier fan  
and the existing system fan must be interlocked by using the  
low voltage interlock method provided with the dehumidifier.  
See the wiring diagrams in the “Electrical Connections”  
section.  
Existing Furnace or Air Handler with Fresh Air Duct.”  
10. If desired, install a supply air duct to the basement or crawl  
space. See “Install Dehumidifier—Existing Furnace or Air  
Handler with Dry Air to the Basement or Crawl Space.”  
1. Disconnect power.  
WARNING  
Excessive Weight Hazard  
Use two or more people to move and install  
dehumidifier.  
Failure to do so can result in back or other injury.  
2. Place the dehumidifier in final location. See “Location  
Requirements.”  
10  
 
Complete Installation  
1. If the dehumidifier is installed on an existing system, seal all  
3. Replace any access doors removed during the installation.  
joints in the return air system between the discharge air  
supply duct and the return air supply duct on the dehumidifier  
and the return air duct of the existing system.  
4. Run the furnace or cooling system through one complete  
cycle to be sure the system operates as desired.  
2. If fresh air ventilation is used, remove any debris from  
screened intake hood.  
Make Electrical Connections  
5. Connect the line voltage wire to the L1 terminal of the  
contactor.  
WARNING  
6. Connect the neutral wire to the L2 terminal of the contactor.  
7. Connect the ground wire to the green ground lug marked  
“Ground.”  
A
Electrical Shock Hazard  
Disconnect power before servicing.  
Replace all parts and panels before operating.  
Failure to do so can result in death or electrical shock.  
B
1. Disconnect all power supplies.  
2. Remove the electrical access panel.  
3. Remove the control box cover.  
C
4. Route the field supply wires to the dehumidifier’s electrical  
connection box.  
A. L1 terminal  
B. L2 terminal  
C. Green ground lug  
8. Replace the control box cover.  
9. Replace the electrical access panel.  
11  
 
Digital Humidistat with Fan Switch Wiring Diagram  
DVA Low Voltage Terminal  
Dehumidistat Fan Control  
V
X
C
R
D
H
G
GT  
GF  
RF  
X
R
C
H
V
D
G
15-minute time delay “On Make”  
“X” required on UH models only  
Optional  
24-Volt  
Damper  
Furnace/Air Handler Interlock  
“G” Terminal on existing thermostat*  
“G” Terminal on furnace or air handler*  
(24V Hot) “R” Terminal on furnace or air handler  
*Remove existing wire between T-stat and furnace or air handler.  
Digital Humidistat with Humidifier Control Wiring Diagram  
S2000 & S2020 Humidifier  
Dehumidistat Fan Control  
DVA Low Voltage Terminal  
C
R
D
H
G
GT  
GF  
RF  
G1  
R
G2  
H
H
R
C
H
V
D
G
Optional  
24-Volt  
Damper  
Field  
Supplied  
24-Volt  
Relay  
N.O.  
Furnace/Air Handler Interlock  
“G” Terminal on existing thermostat*  
“G” Terminal on furnace or air handler*  
(24V Hot) “R” Terminal on furnace or air handler  
*Remove existing wire between T-stat and furnace or air handler.  
12  
 
Whole House Humidifier Schematic Diagram  
Low Voltage Terminal  
G
C
R
D
H
GF  
RF  
X
V
GT  
115 Volt, 60 Hz, 20 Amp  
1 Phase Power Supply  
Contactor  
Transformer  
Fan Relay  
*Time Delay  
Low  
Pressure  
Switch  
Freeze  
Stat  
3
1
4
2
5
BU  
BK  
High Speed  
For UH  
6
Blower Motor  
C
MH  
Door  
Switch  
H
Filter  
Pressure  
Switch  
Compressor  
Overload  
Compressor  
Run Capacitor  
C
S
Lamp  
Ballast  
R
R
* Optional Component  
*Start  
Assist  
UV  
Lamp  
UH/UV Models Only  
13  
 
SEQUENCE OF OPERATION  
Whole House Dehumidifier  
The whole house dehumidifier is designed to deliver  
Coil Freeze Protection  
dehumidified, filtered air to the living space. Ventilation air can  
also be delivered in a controlled fashion using the outside air  
venting option.  
The dehumidification coil (evaporator) is equipped with a low  
temperature freeze thermostat. If the coil temperature is reduced  
to the point of ice buildup, the thermostat will turn off the  
compressor while allowing the fan to continue running. Once the  
coil has returned to normal conditions, the thermostat will allow  
the compressor to restart. The prevailing conditions of the return  
air, temperature and humidity will determine the length of this  
cycle.  
When the relative humidity exceeds the humidistat set point by  
approximately 3%, the humidistat will energize the  
dehumidification and air circulation components of the  
dehumidifier (with 15-minute delay on digital humidistat). If the  
dehumidifier is connected and interlocked with an existing  
furnace or air handler, the system’s circulation fan will also be  
energized. The dehumidifier will continue to operate until the  
humidity level is reduced to the set point selected on the  
humidistat and then will cycle off. During this cycle, the air  
circulated through the dehumidifier will be filtered and  
dehumidified. If an outside ventilation air duct has been installed,  
fresh air will be filtered and dehumidified and introduced into the  
space during this cycle.  
Low Pressure Control  
If the low-side refrigerant pressure drops to 20 psig, the low  
pressure control opens and turns off the compressor. It is an  
automatically reset control that will close when the pressure rises  
to 50 psig. It may also open if the dehumidifier is installed in a  
cool area below 40ºF and then started. Under these conditions,  
the dehumidifier will restart within several minutes. Until the  
whole house dehumidifier warms up, it may repeat the cycle  
several times.  
WHOLE HOUSE DEHUMIDIFIER MAINTENANCE  
To assure optimum performance from the whole house dehumidifier, the pre-filter should be replaced every three to six months, and the  
HEPA air filter every 18 to 30 months.  
Pre-filter  
The dehumidifier is equipped with a 2" pleated pre-filter.  
Operating the dehumidifier with a dirty pre-filter will reduce  
dehumidifier capacity and efficiency and may cause the  
compressor to cycle off and on unnecessarily. Under normal  
operating conditions, the pre-filter should be replaced every  
6 months. However, in high particulate concentrations, more  
frequent replacements may be necessary. It is recommended  
that the pre-filter be inspected regularly for the first 3 to 4 months  
to determine the correct replacement intervals.  
3. Slide the panel out and down until it is free from underneath  
the top panel.  
4. Remove the pre-filter by pulling the pre-filter straight out of  
the dehumidifier.  
Replacement pre-filters may be purchased from your installation  
contractor or ordered from the factory if a local representative is  
not available. Do not operate the dehumidifier without the pre-  
filters, or with less effective pre-filters than originally supplied.  
The heat exchange coils inside the dehumidifier could become  
clogged and require disassembly to clean.  
To replace the pre-filter  
1. Locate the filter access panel on the left-hand side of the  
dehumidifier. See “Location Requirements.”  
2. Remove the ⁵⁄₁₆" hex screws from the panel marked “Filter  
Access.”  
HEPA or MERV 11 Air Filter  
The UH model is equipped with a high efficiency HEPA air filter.  
This filter is rated MERV 20, and is more efficient and traps  
smaller allergy-causing particles than standard air filters. Under  
normal operating conditions, the HEPA air filter should be  
replaced every 18 to 30 months. However, in high particulate  
concentrations more frequent replacements may be necessary.  
The dehumidifier is equipped with a pressure sensing system that  
monitors the HEPA air filter and signals when the filters should be  
serviced. The LED indicator light on the digital humidistat will  
flash “FL” when the filters require service. If the filters are not  
serviced promptly, damage to the dehumidifier may occur. The  
filters may be changed prior to signal.  
right, or downstream of the 2" pre-filter. The 2" pre-filter serves to  
prolong the life of the HEPA air filter.  
The XS model is equipped with a 4" MERV 11 filter and should  
also be used with the 2" pre-filter.  
To replace the air filter  
1. Locate the filter access panel on the left-hand side of the  
dehumidifier. See “Location Requirements.”  
2. Remove the ⁵⁄₁₆" hex screws from the panel marked “Filter  
Access.”  
3. Slide the panel out and down until it is free from underneath  
the top panel.  
The HEPA air filter should be used in conjunction with the 2" pre-  
filter. It should be installed in the filter enclosure directly to the  
4. Remove the HEPA air filter by pulling the air filter straight out  
of the dehumidifier.  
14  
 
NOTES:  
To replace the UVC light bulb  
Handle the HEPA air filter gently to prevent damage to the  
fabric media.  
WARNING  
The HEPA air filter should not be cleaned. It should be  
replaced when it becomes restrictive.  
A
Electrical Shock Hazard  
Disconnect power before servicing.  
Replace all parts and panels before operating.  
Failure to do so can result in death or electrical shock.  
B
1. Disconnect power.  
2. Remove the filter access panel.  
3. Remove the electrical access panel.  
4. Remove the internal component access panel.  
5. Remove the connector from the UVC light and sleeve.  
6. Remove the connector sleeve from the UVC bulb.  
7. Remove the UVC bulb.  
A. Pre-filter  
B. HEPA filter  
Fresh Air Return  
If your system includes the optional fresh air return, it will have an  
outside air intake. Check and clean the hood screen on the  
outside air intake seasonally. The intake hood screen must  
remain clear of any debris that could restrict airflow into the  
dehumidifier.  
A
UVC Germicidal Light  
WGDH160UH and WGDV160UH models are equipped with UVC  
germicidal ultraviolet lights. The bulb for the germicidal ultraviolet  
light is rated for at least 9,000 hours (1 year) when used in  
accordance with the whole house dehumidifier installation  
instructions. The bulb may last longer in some situations, but  
annual bulb replacement is recommended since UVC ouput is  
typically reduced by about 25 percent at 9,000 hours and drops  
off more rapidly afterward.  
B
C
CAUTION: UV Light Hazard RG-3. Harmful to bare skin and  
eyes. Can cause temporary or permanent loss of vision.  
Never look at the lamps while illuminated. This heating/air  
conditioning system is equipped with an ultraviolet air  
treatment system. To prevent exposure to ultraviolet light,  
disconnect power to the ultraviolet air treatment system  
before servicing any part of the heating/air conditioning  
system.  
A. UVC germicidal light bulb  
B. Connector sleeve  
C. Connector  
8. Replace the UVC bulb.  
9. Replace the connector sleeve.  
10. Replace the connector.  
11. Replace the internal component access panel.  
12. Replace the filter access panel.  
13. Reconnect power.  
15  
 
ASSISTANCE OR SERVICE  
If you need further assistance, you can write to the below  
address with any questions or concerns:  
Whirlpool® Home Cooling and Heating  
14610 Breakers Drive  
Jacksonville, FL 32258  
Please include a daytime phone number in your correspondence.  
400-1014  
®Registered Trademark/TM Trademark of Whirlpool, U.S.A.,  
Manufactured under license by Tradewinds Distributing Company, LLC., Coconut Grove, Florida  
8/07  
Printed in U.S.A.  
© 2007. All rights reserved.  
 

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