INSTALLATION
OPERATION
MAINTENANCE
DH-100V
HIGH EFFICIENCY DEHUMIDIFIER
972 DH 09-12
ALDES DH-100V
Installation, Operation & Service Instructions
Read the installation, operation and maintenance
instructions carefully before installing and using this unit.
Proper adherence to these instructions is essential to
obtain maximum benefit from your DH-100V
dehumidifier.
Table of Contents
1 Specifications
1. Specifications....................................................... 1
2. Installation............................................................ 1
2.1 Location ............................................................ 1
2.1A In humid area, no ducting. .......................... 1
2.1B In humid area, duct inlet and/or outlet. .......... 1
2.1C In remote area, duct inlet & outlet............... 2
2.1D In remote area, duct outlet only.................. 2
2.1E In remote area, duct inlet only. ................... 2
2.2 Electrical Requirements .................................... 2
2.3 Condensate Removal........................................ 2
2.4 Ducting .............................................................. 2
2.4A Optional Ducting ........................................ 2
2.4B Ducting for Dehumidification....................... 2
2.4C Ducting for Fresh Air................................... 3
3. Operation.............................................................. 3
3.1 Humidity Control Adjustment............................. 3
3.2 Fan Switch......................................................... 3
4. Maintenance ......................................................... 3
4.1 Air Filter............................................................. 3
4.2 Blower Oiling ..................................................... 3
5. Service .................................................................. 4
5.1 Warranty............................................................ 4
5.2 Technical description ........................................ 4
5.3 Troubleshooting................................................. 4
5.4 Refrigerant Charging......................................... 5
5.5 Blower Replacement......................................... 5
5.6 Compressor/Capacitor Replacement................ 5
5.6A Checking Compressor Motor Circuits......... 5
5.6B Replacing a Burned Out Compressor......... 5
5.6C Replacing a Compressor- Nonburn Out .........6
5.7 Humidity Control................................................ 6
5.8 Defrost Thermostat............................................ 6
5.9 Condensate Pump............................................. 6
6. Wiring Diagrams .................................................. 7
7. Service Parts List................................................. 8
8. Warranty................................................................ 9
9. Service Notes ..................................................... 10
Model: DH-100V Dehumidifier
Electrical: 110-120 VAC, 6.8 Amps, grounded
Capacity: 100 pints/day @ 80°F, 60% RH
Operating Temp. Range: 53°F min, 105°F max
Air Flow: 255 CFM without external ducting
170 CFM @ 0.15 in.wg. external static
Refrigerant Charge: 1 lbs., 14oz. R-22
Optional Duct connections: 8" round inlet & outlet
Size (w/o duct collars): 20" long x 17" wide x 36" high
Weight: 103 lbs.
2 Installation
2.1 Location
The DH-100V 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:
•
•
It is designed to be installed INDOORS ONLY.
If used near a pool or spa, be certain there is NO
chance the unit could roll into the water or be
splashed and that it is plugged into a GROUND
FAULT INTERRUPTER.
•
•
DO NOT use the DH-100V as a bench or table.
Avoid discharging the air directly at people,
especially in pool areas.
2.1A In humid area, no ducting.
The simplest installation is to place the DH-100V in the
humid area with no ducting. The air inlet on top & outlet
on the side must be at least 1' from walls and other
obstructions to air flow.
2.1B In humid area, duct inlet and/or outlet.
If the humid area is very large or has high ceilings,
dehumidification can be improved by adding an inlet
and/or outlet duct to circulate and destratify stagnant
areas. For a large area, add inlet or outlet ducting to
create flow across the area's greatest length.
For areas with ceilings higher than 12', use an inlet duct
to draw warm, moist air from near the ceiling. See
section 2.4 for attaching duct collars & ducting.
Serial No.________________________________
Purchase Date____________________________
Dealer's Name____________________________
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2.4C Ducting for Fresh Air
3.2 Blower Switch
Fresh air can be brought into the structure continuously
by connecting a duct from outside to the DH-100V inlet
and by turning on the fan switch. Advantages of this form
of ventilation include:
1. Outside air is filtered before entering the building.
2. Outside air will be dehumidified before entering if
the DH-100V is running.
3. Drawing air from outside and blowing inside aids in
pressurizing the structure. This helps prevent unfil-
tered and humid air from entering elsewhere. It also
reduces the potential for carcinogenic radon gas to
enter.
Turning ON the fan switch will cause the unit's internal
blower to run continuously, whether the unit is
dehumidifying or not. This function is desirable if the unit
is used for air circulation or fresh air ventilation.
4 Maintenance
4.1 Air Filters
The DH-100V is equipped with 2 air filters. A foam
prefilter followed by a pleated fabric filter. These should
be checked monthly. Operating the unit with dirty filters
will reduce dehumidifier capacity and efficiency and may
cause the compressor to cycle off and on unnecessarily
on the defrost control.
4. The need for an alternate ventilation device may be
eliminated.
(Note: Aldes Model DHV-100V is specifically
designed for dehumidification and
ventilation.)
If dirty, the foam prefilter can be vacuumed or carefully
hand washed with warm water and mild detergent, then
rinsed. The pleated fabric filter can generally be
vacuumed clean several times before needing
replacement. Replacement filters can be ordered from
the factory or purchased locally if available. DO NOT
operate the unit without the filters or with a less effective
filter. The heat exchange coils inside the unit could
become clogged and require disassembly to clean.
An insulated 6" diameter duct is generally sufficient to
provide up to 100 CFM of outside air. An adjustable
damper is recommended for controlling the airflow.
Large quantities of outside air will impact the DH-100V’s
performance positively or negatively, depending upon
the difference between inside and outside air conditions.
Consult the factory by calling 1-800-255-7749 for
recommendations regarding the use of higher flows with
your specific application.
4.2 Blower Oiling
The outside air duct should be connected into the main
inlet duct close to the unit. If no other inlet duct is used,
locate the outside air duct end on top of and as close as
possible to the DH-100V air filter.
The blower motor is factory lubricated for many years of
normal operation. However, periodic oiling will extend
motor bearing life. To oil, remove the plastic cap from the
two oiling tubes extending from the unit above the
humidity control (see Figure 3). Add 3 to 5 drops of SAE
20 non-detergent oil to each port every 6 months. DO
NOT use thinner oil or penetrating oil. Blower life can
actually be decreased by such oil.
3 Operation
3.1 Humidity Control Adjustment
Set the humidity control to the desired humidity level for
the home. The dehumidifier will run continuously until the
relative humidity (RH) is reduced to the humidity control
dial setting. Setting the humidity control to lower RH
levels will NOT increase the unit's dehumidification rate;
the unit will simply run longer to reduce the area's RH to
the setting. The ALDES DHV-100V unit (and refrigerant
based dehumidifiers in general) will reduce a warm
space's RH to a lower level than that of a cool space. It
is therefore pointless to set the humidity control to
excessively low levels in cool rooms; doing so will result
in long periods of ineffective dehumidifier run time.
Quality humidity meters are available from the factory
and are recommended to accurately monitor humidity
levels.
3
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The evaporator operates in a flooded condition, which
means that all the evaporator tubes contain liquid
refrigerant during normal operation. A flooded evaporator
should maintain constant pressure and temperature
across the entire coil, from inlet to outlet.
5 Service
CAUTION: Servicing the DH-100V 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. Only
qualified service people should service this unit.
The mixture of gas and liquid refrigerant enter the
accumulator after leaving the evaporator coil. The
accumulator prevents any liquid refrigerant from
reaching the compressor. The compressor evacuates
the cool refrigerant gas from the accumulator and
compresses it to a high pressure and temperature to
repeat the process.
5.1 Warranty
See page 9 for warranty terms. Read the warranty
before any repair is initiated. If a warranty repair is
required, call the factory first at 1-800-255-7749 for
warranty claim authorization and technical assistance.
5.3 Troubleshooting
No dehumidification, neither blower nor compressor
run with fan switch OFF.
1. Unit unplugged or no power to outlet.
2. Humidity control set too high or defective (Sec. 3.1
& 5.7).
5.2 Technical Description
The DH-100V uses a refrigeration system similar to an
air conditioner's to remove heat and moisture from
incoming air, and add heat to the air that is discharged
(see Fig. 1).
3. Loose connection in internal wiring.
No dehumidification, compressor does not run but
blower runs with fan switch OFF and humidity
control turned to ON.
Hot, high-pressure refrigerant gas is routed from the
compressor to the condenser coil (see Fig. 1). The
refrigerant is cooled and condensed by giving up its heat
to the air that is about to be discharged from the unit.
The refrigerant liquid then passes through a filter/drier
and capillary tubing, which cause the refrigerant
pressure and temperature to drop. It next enters the
evaporator coil where it absorbs heat from the incoming
air and evaporates.
1. Defective compressor run capacitor (Sec. 5.6).
2. Loose connection in compressor circuit
Fig. 2).
(see
3. Defective compressor overload (Sec. 5.6A).
4. Defective compressor (Sec.5.6).
5. Defrost thermostat open (Sec. 5.8).
Blower runs with fan switch OFF, but compressor
cycles on & off.
1. Low ambient temperature and/or humidity, causing
unit to cycle through defrost mode.
2. Defective compressor overload (Sec. 5.6A).
3. Defective compressor (Sec. 5.6).
4. Defrost thermostat defective (Sec. 5.8).
Blower does not run with fan switch in either
position. Compressor runs briefly but cycles on &
off.
1. Loose connection in blower circuit (see Fig. 2).
2. Obstruction prevents impeller rotation.
3. Defective blower.
4. Blower switch defective.
Evaporator coil frosted continuously, low
dehumidifying capacity.
Figure 1: Refrigeration System of DH-100V
1. Defrost thermostat loose or defective (Sec. 5.8).
2. Low refrigerant charge
3. Dirty air filter or airflow restricted.
4
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5.4 Refrigerant Charging
4. Compressor terminals C and S: No continuity indi-
cates an open start winding. The compressor must
be replaced. Normal start winding resistance 3 to 7
ohms.
If the refrigerant charge is lost due to service or a leak, a
new charge must be accurately weighed in. If any of the
old charge is left in the system, it must be removed
before weighing in the new charge. Refer to the unit
nameplate for the correct charge weight and refrigerant
type.
5. Compressor terminals C and R: No continuity indi-
cates an open run winding. The compressor must
be replaced. Normal run winding resistance is .5 to
2 ohms.
5.5 Blower Replacement
The centrifugal blower has a PSC motor and internal
thermal overload protection. If defective, the complete
assembly must be replaced.
6. Compressor terminal C and overload terminal 1: No
continuity indicates a defective overload lead.
1. Unplug the power cord.
2. If an outlet duct is connected to the unit, remove it.
3. Remove the cabinet side.
4. Remove the 4 screws holding the electrical box
located next to the blower.
7. Overload terminals 1 and 3: If there is no continuity,
the overload may be tripped. Wait 10 minutes and
try again. If there is still no continuity, it is defective
and must be replaced.
5. Disconnect the blower leads. Black from the blower
switch, and white the run capacitor.
6. Unbolt the blower capacitor from the blower motor
(required for removal clearance). Pull the oil tubes
out of the motor.
7. Remove the nuts & bolts holding the blower outlet
flange to the cabinet end and remove the blower.
8. Reassembling with the new blower is the above
procedure reversed.
8. Compressor terminal C and compressor case:
Continuity indicates a grounded motor. The com-
pressor must be replaced.
9. Disconnect the yellow wires from the capacitor. Set
the ohmmeter to the Rx1 scale. The capacitor is
shorted and must be replaced if continuity exists
across its terminals. If there is no needle movement
with the meter set on the Rx100000 scale, the
capacitor is open and must be replaced.
5.6 Compressor/Capacitor
Replacement
This compressor is equipped with a two terminal external
overload, run capacitor, but no start capacitor or relay.
See Fig. 2.
10. Reconnect the wires to the compressor and capaci-
tor. Plug in and turn on the unit. If the compressor
fails to start, replace the run capacitor.
11. If the unit still doesn't start, adding a hard-start kit
(relay & capacitor) will provide greater starting
torque. If this doesn't work, the compressor has an
internal mechanical defect and must be replaced.
CAUTION-ELECTRICAL SHOCK HAZARD: Electrical
power must be present to perform some tests; these
tests should be performed by a qualified service person.
5.6B Replacing a Burned Out Compressor
5.6A Checking Compressor Motor Circuits
The refrigerant and oil mixture in a compressor is
chemically very stable under normal operating
Perform the following tests if the blower runs but the
compressor does not with the blower switch OFF and
the humidity control ON.
conditions. However, when an electrical short occurs in
the compressor motor, the resulting high temperature
arc causes a portion of the refrigerant oil mixture to
break down into carbonaceous sludge, a very corrosive
acid, and water. These contaminants must be carefully
removed otherwise even small residues will attack
replacement compressor motors and cause failures.
1. Unplug the unit, remove the cabinet side (with two
screws in center) and the electrical connection
cover on the compressor top.
2. Plug in the unit and turn the humidity control to ON.
Check for 110 volts from compressor terminal R to
overload terminal 3 using an AC voltmeter. If
voltage is present, go to step 3. If no voltage, the
high-pressure control or relay are open or there is a
loose connection in the compressor circuit. Test
each component for continuity; see the appropriate
section if a defect is suspected.
3. Unplug the unit, then disconnect the red and yellow
wires from compressor terminals R & S. Using an
ohmmeter, check continuity between the points
listed below.
5
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The following procedure is effective only if the system is
monitored after replacing the compressor to insure that
the clean up was complete.
An alternate method of removing moisture and non-
condensibles from the system requires evacuation
to 29" Hg vacuum. Then break the vacuum with 35
to 50 PSIG refrigerant vapor charge. Leave the
vapor charge in the system for at least 5 minutes
before removing it. Repeat the vapor
charge/wait/remove sequence twice more and then
charge the system with the quantity and refrigerant
listed on the nameplate.
1. This procedure assumes that the previously listed
compressor motor circuit tests revealed a shorted or
open winding. If so, cautiously smell the refrigerant
from the compressor service port for the acid odor
of a burn out.
8. Operate the system for a short period of time, moni-
toring the suction pressure to determine that the
suction filter is not becoming plugged. Replace the
suction filter/drier if pressure drop occurs. If a
severe running burn out has occurred, several fil-
ter/driers may have to be replaced to remove all of
the acid and moisture.
WARNING: The gas could be toxic and highly
acidic. If no acid odor is present, skip down to the
section on changing a non-burn out compressor.
2. Remove and properly dispose of the system
charge. DO NOT vent the refrigerant indoors or
allow it to contact your eyes or skin.
NOTE: NEVER use the compressor to evacuate
the system or any part of it.
3. Remove the burned out compressor. Use rubber
gloves if there is any possibility of contacting the oil
or sludge.
5.6C Replacing a Compressor- Nonburn Out
4. To facilitate subsequent steps, determine the type
of burn out that occurred. If the discharge line
shows no evidence of sludge and the suction line is
also clean or perhaps has some light carbon
deposits, the burn out occurred while the
Remove the refrigerant from the system. Replace the
compressor and liquid line filter/drier. Charge the system
to 50 PSIG and check for leaks. Remove the charge and
weigh in the refrigerant quantity listed on the nameplate.
Operate the system to verify performance.
compressor was not rotating. Contaminants are
therefore largely confined to the compressor
housing. A single installation of liquid and suction
line filter/driers will probably clean up the system.
5.7 Humidity Control
The humidity control is an adjustable switch that closes
when the relative humidity of the air in which it is located
rises to the dial set point. It opens when the RH drops 4
to 6% below the set point.
If sludge is evident in the discharge line, it will likely
be found in the suction line; this indicates the
compressor burned out will running. Sludge and
acid has been pumped throughout the system.
Several changes of the liquid and suction
filter/driers will probably be necessary to cleanse
the system.
5.8 Defrost Thermostat
The defrost thermostat is attached to the refrigerant
suction tube between the accumulator and compressor.
It will automatically shut the compressor off if the low
side refrigerant temperature drops due to excessive frost
formation on the evaporator coil. The blower will
continue to run, causing air to flow through the
evaporator coil and melt the ice. When the ice has
melted, the evaporator temperature will rise and the
thermostat will restart the compressor.
5. Correct the system fault that caused the burn out.
Consult the factory for advice.
6. Install the replacement compressor with a new ca-
pacitor and an oversized liquid line filter.
In a running burn out, install an oversized suction
line filter/drier between the accumulator and com-
pressor. Thoroughly flush the accumulator with re-
frigerant to remove all trapped sludge and to pre-
vent the oil hole from becoming plugged. A standing
burn out does not require a suction line filter/drier.
5.9 Condensate Pump
Condensate is automatically pumped to a remote
location when the water level in the pump's reservoir
rises to close the float switch.
7. Evacuate the system with a good vacuum pump
and accurate vacuum gauge. Leave the pump on
the system for at least an hour.
6
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Figure 2: Electrical Schematic of the DH-100V Dehumidifier
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SERVICE PARTS LIST: DH-100V Dehumidifier
ITEM
PART NO.
QTY.
DESCRIPTION
1
2
3
4
5
6
7
8
4021818
AL99005
4021468
4022037
4021589
4023474
4022144
4017318
4017799
4021396
4021409
4021470
4021648
4021395
4020955
4021626
4021469
4021495
4020554
4021471
4021507
4021453
4020623
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
Accumulator
Air Filter, Pleated, 2” x 16” x 20”
Air Filter, Foam Element
Blower w/ Capacitor (Fasco 7090-1874)
Capillary Tubes, .050" ID x 28" long
Compressor, Panasonic (2R12S3R126A-6A)
Compressor Overload (TI # MRA98706-673) (not shown)
Compressor Run Capacitor for Panasonic, 35 MFD, 370V
Compressor Run Capacitor for Tecumseh, 25 MFD, 440V
Condenser Coil
Cord & Wire Harness
Defrost Thermostat
Defrost Thermostat Mounting Clip (item 11)
Evaporator Coil
Filter/Drier
9
10
11
12
13
14
15
16
17
18
19
20
21
Hose, Drain, .56"ID x 8'
Humidity Controller
Knob, Humidity Controller
Switch, SPDT, for Fan
Wheel, 2", Plastic
Wiring Diagram (on Cover) (not shown)
Optional Ducting Kit (for Inlet & Outlet) (not shown)
Optional Outlet Collar (for Ducting Outlet only) (not shown)
Figure 3
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Limited Warranty
American ALDES Ventilation Corporation warrants to the original end user of the Dehumidifier or Dehumidifying
Ventilator model referred to below, to be free from manufacturing defects. It is limited to the original end-user and may
not be assigned or transferred.
First Year Warranty: If the product exhibits a defect in materials or workmanship within one (1) year after purchase,
American ALDES, at its option, will repair or replace the unit free of charge for materials and labor.
Second through Fifth Year: American ALDES warrants that for a period of five (5) years, the condenser, evaporator,
and compressor of the unit will operate free of defect in materials or workmanship, or American ALDES, at its option
will repair or replace the defective parts, provided that labor and transportation costs are borne by the end-user.
Proof of purchase: The end-user must provide a dated proof of purchase upon request, by copy of invoice from
American ALDES, or the installing dealer.
End-User Responsibilities: Warranty service must be performed by a Servicer authorized by American ALDES
Ventilation Corporation. If the end-user is unable to locate or obtain warranty service from an authorized Servicer, he
should call American ALDES Ventilation Corporation (1-800-255-7749) to arrange for covered warranty service.
Warranty service will be performed during normal business hours.
The end-user is responsible for normal care, including normal maintenance, filter replacement, as outlined in the
installation and operating instructions. This warranty applies only to residential applications and does not cover any
defect or malfunction, etc., resulting from misuse, abuse, lack of maintenance, corrosion, freezing, modification,
unauthorized or improper repair or installation, accident, acts of nature, or any other cause beyond American ALDES
Ventilation Corporation’s reasonable control.
Limitations and Exclusions: If any American ALDES Dehumifier/Dehumidifying Ventilator part is repaired or
replaced, the new part shall be warranted for only the remainder of the original warranty period applicable thereto. All
warranty periods shall be extended by the period of time, if any, that the unit is out of service while awaiting covered
warranty service.
Upon the expiration of the written warranty applicable to the Dehumidifier/Dehumidifying Ventilator or any part thereof,
all other warranties implied by law, including merchantability and fitness for a particular purpose, shall also expire.
American ALDES makes no express warranties, except for those that are set forth herein and shall not be liable for
any incidental, special, or consequential damages, including without limitation water damage (the end-user should
take precautions against same), lost profits, delay, or loss of use or damage to any real or personal property, with
respect to the American ALDES products covered by this warranty. American ALDES complete liability and the
owner’s exclusive remedy are limited to repair or replacement according to the terms stated herein.
No person is authorized to change the warranty in any way or grant any other warranty unless such changes are made
in writing and signed by an officer of American ALDES Ventilation Corporation.
Some states do not allow limitations of how long an implied warranty lasts, and some do not allow the exclusion or limitation
of incidental or consequential damages, so one or both of these limitations by not apply to you.
Legal Rights: This warranty gives you specific legal rights, and you may have other rights, which vary from state to state.
American ALDES Ventilation Corporation, 4537 Northgate Ct. Sarasota, FL 34234 (800) 255-7749
Model:
Unit Serial No._____________________________________
Installed by:____________________________________
Date:____________________________________________
Date
Service Notes
9
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