PureAiro WMDH 33 User manual

Key features:
The unit is noise-free
I ts air filter is cleanable
C an be plugged directly into
an outlet of 220V or hardwired
into an existing supply
E ngineered to drain into a
plumbing line or a hub-drain
Features an internal digital
dehumidistat
Installation & Operations Manual
PUREAIRO
WMDH 33
PureAiro solutions inc.
Add: Berlin, Germany.
Tel: [phone]
E-mail: [email protected]
(IN- WALL
SOLUTION)

TABLE OF
CONTENTS
01
The energy efficient WMDH 33 IN Wall Dehumidifier or ON Wall Dehumidifier
system removes excess moisture to reduce the risks associated with mold
growth. Specifically designed for lowering relative humidity in multi-family
housing, the WMDH 33 has proved beneficial in a range of indoor living
spaces. A successful humidity control strategy will lower relative humidity
levels below 60% to proactively prevent mold growth. The most effective and
efficient way to improve Indoor Air Quality (IAQ) and prevent mold growth is
with supplemental dehumidification.
PRODUCT INTRODUCE
Safety Notes
Electrical Supply
Dehumidifier Diagram
Principle of Operation
Operating Instructions
Maintenance
Dimension Diagram
Dehumidifier Installation
Air Flow
Wiring Schematic
Troubleshooting
Warranty Information
02
02
03
04
04
05
06
07
12
13
14
15
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PureAiro WMDH 33

SAFETY NOTES
02 03
PureAiro WMDH 33
The WMDH 33 Dehumidifier must always be connected using a grounded electrical
connection as required for all electrical appliances. The warranty is voided and all
responsibility for the operation is born by the owner if non-grounded wiring is utilized.
The WMDH 33 Dehumidifier must only be installed, maintained and serviced by a qualified
technician.
Follow all state and local plumbing and electric codes.
The WMDH 33 Dehumidifier is intended only for operation when the unit is wall mounted
or in wall and level. Any other orientation could cause water to contact electrical
components.
If any water may have spread throughout the unit, the unit should be opened and allowed
to dry thoroughly before reconnecting to electric and restarting.
For proper operation, no obstruction should be located within 914mm of the discharge of
the unit
Do not insert any objects or fingers into the inlet or discharge. If service is required, call a
qualified technician. All work on unit should be done with the unit “off” and unplugged or
the breaker turned “off.”
Do not use water to clean the unit exterior. Only use a damp cloth to clean the exterior and
always unplug or disconnect the power of unit first.
The drain hose must be installed to ensure the proper flow of condensate water to a drain
source.
ELECTRICAL SUPPLY
POWER SUPPLY
OUTLET REQUIREMENT
CIRCUIT PROTECTOR
220 Volts AC may cause serious injury from electric shock.
WARNING
TO ENSURE SAFETY:
Disconnect electrical power before servicing.
Only plug unit into grounded electrical circuit.
Do not use extension cord.
Do not use a plug adapter.
220 V, 50 Hz AC, Single Phase
3-Prong
15 Amp Time Delay Fuse or Circuit Breaker
1
2
3
4
DEHUMIDIFIER DIAGRAM
FRONT VIEW
BACK VIEW
AIR DISCHARGE
FILTER MAINTENANCE
REMINDER
FRONT COVER SCREWS
AND CAPS
AIR INTAKE
FRONT COVER
WALL SCREW HOLES
REAR TOP COVER
Wall screw holes
Back cover
Power Cord
Routing Options
Drain Line
Routing Options
Chassis

04 05
PureAiro WMDH 33
PRINCIPLE OF OPERATION
The WMDH 33 Dehumidifier utilizes its integral humidistat to monitor the conditioned space.
When the relative humidity goes above the selected set point, the dehumidifier will energize.
Air is drawn across an evaporator coil, which is cooler than the dew point of air. This means
moisture will condense out of the air. The air is then reheated through the condenser coil and
distributed back into the room.
CONTROL BOARD
Filter replacement time
switches 60 or 75 days
Humidity
Display
Humidity
Setpoint Button On/Off ButtonLED
OPERATING INSTRUCTIONS
1ON/OFF Control
Plug the unit in and the display will show the current room relative humidity. Press the on/off
button, and the machine will beep twice indicating it is ready for automatic service. If the
humidity is below setpoint, it will remain in standby condition. The on/off led will flash
indicating the unit is in standby mode. If the humidity is above setpoint, the unit will turn on
and begin to remove moisture from the room. The on/off led will be in constant on mode while
the dehumidifier is on mode.
Press the on/off button again, and a single beep will indicate that the unit is turning off. No
room conditioning will occur until the unit is turned on again. The on/off LED will be turn off.
2Setting the Humidity Level
Press the button to set indoor humidity. The humidity display will shift from displaying the
actual room humidity level to the current setpoint. The humidity can be in 1% increments
from 36-90%. Pressing the SET button increases the setpoint by 1% unit you reach 90%,
then rolls over to “CO” and increases from there.
3Time
Used to adjust the filter replacement time (selection of 60 days or 75 days).
MAINTENANCE
240 Volts AC may cause serious injury from electric shock. Be sure the
unit is powered off and unplugged or circuit breaker is turned off before
removing front cover to service unit.
WARNING
Cleaning Front Cover
Use a soft damp cloth to clean the front cover as
required. Do not use any soap or solvents.
1
2Filter Maintenance
A.When the filter maintenance red light on the
front panel lights up, open the front panel and
wash or replace filter as necessary.
B.After the filter replacement is completed,
press the filter reminder reset button to reset
the filter replacement time.

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PureAiro WMDH 33
DIMENSION DIAGRAM
(182.2mm)
(37.6mm) (438mm)
(360mm)
(769mm)
(700mm)
DEHUMIDIFIER INSTALLATION
Dehumidifier not designed for corrosive environment
WARNING
Step 1. Cutting the two zip ties, remove the three screws from the shipping bracket, then
remove the shipping bracket.
*Fastening of mounting tabs
and installation
Location of Electric Control Box, Water Collect Tray
CAUTION

08 09
Step 5. After installation location has been determined, use a stud finder, locate and mark
stud walls.
PureAiro WMDH 33
Step 2. There are two reserved power cord holes, one on the back and one on the bottom of
the unit. Remove appropriate knock out as needed. Complete electrical connections:
White to White (L)
Green to Green (GRN)
Black to Black (N)
After complete electrical connections, slide electrical connection inside unit, fasten the
strain relief to the power cord and then snap it on the selected power cord holes.
Step 3. The drain hose can exit through the
back, side, or bottom of the unit. Once the
location is determined, remove the
appropriate knock out or plug.
Pipe Connection (No Pump):
Step 4. Route the grommet over the drain hose and snap into place at the selected
drain location. Use hex nut screwdriver to apply hose clamp to the drain hose.
Step 6. Using measuring square, level and pencil,
measure 375.9mm across and down 711mm
and draw a line.
Step 7. Using a square or ruler, score the lines and cut
with a drywall saw. Depending on the installation, both
walls may need to be cut through.
SHUT OFF BREAKER / POWER
BEFORE BEGINNING INSTALLATION.
WARNING
Step 8. If not using included power cord, route the electrical wire from the circuit breaker or
disconnect switch through the wall cavity and extend out of the opening by 356mm to
508mm.
Use the 254mm drain hose provided or the appropriate
length of hose to come through the wall cavity or back
of the unit and extend out of the opening by 356mm.
If cutting through both walls, electrical wiring and
drain hose may be routed differently. Use
appropriate routing for your installation.
It is recommended to have two people to lift the unit.
Place one hand under the Water Collect Tray to
support the unit during this step.
Step 9. Lift the unit and place it near the wall opening to route
electrical wires and drain hose
through appropriate knockouts.
If access cover was not removed, insert the grommet into
knock out hole and snap into place before routing drain hose
through.
Step 10. Once electrical and drain hose are routed through
the unit, set the unit into the wall.

10 11
Optional Condensate Pump Installation:
1
2
3
PureAiro WMDH 33
THE UNIT IS NOT SECURED YET
WARNING
Before securing the unit into place, make sure
it is level. Level or slightly forward is
acceptable, but never backward.
Step 11. Insert the dehumidifier into the center of the opening, allowing for a minimum of
1/8（" 3mm） clearance from framing on both sides.
Top and bottom blocking is not necessary for securing the dehumidifier. Any existing
blocking, headers or framing should not intrude into the rough opening and be a minimum of
1/2（" 13mm） away from the cabinet.
The cabinet is designed to create 1/2（" 13mm） clearance to the back wall when installing
inside a standard 2x6 stud space with 1/2"（ 13mm） minimum drywall sheathing.
For alternate installations, maintain 1/2（" 13mm） clearance to back of the wall of the
dehumidifier cabinet.
Step 12. Turn breaker/power back on.
Step 13. Set the digital
controller to desired RH.
See Controls Section.
Step 14. Install diffuser
cover by aligning the
lower tabs first, then setting
the cover back against the
wall. Insert the included four
tamper-resistant screws. to
secure the diffuser cover.
SHUT OFF BREAKER / POWER BEFORE BEGINNING INSTALLATION.
WARNING
Remove the shipping bracket and put in the pump assembly;
Connect the water pipe of the water pump box to the water tray, and fix the water pump
component to the chassis through a screw;
Connect the water pump power cord and water level sensing line on the water pump
assembly to the water pump power cord and water level sensing line inserted on the
main control board, and connect the drainpipe at the rear of the water pump.

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PureAiro WMDH 33
AIR FLOW
The WMDH 33 functions by drawing moist air in through the bottom portion of the diffuser
and returning dried air to space out the top portion of the diffuser.
Note: Avoid blocking the return and supply airflow to maximize unit performance and
prevent heat build-up.
WIRING SCHEMATIC

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PureAiro WMDH 33
WARRANTY
Innovative Dehumidifier systems, LLC. warrants the equipment to be free from defects in
workmanship and materials for a period of 24 months after shipment. This warranty is
limited, however, to the repair or replacement of defective equipment. If it is necessary to
return unit for service, customer is solely responsible for proper packaging, transportation
costs. Customer must initiate warranty process by contacting IDS. Do not send any
component or product back to IDS without Return Material Authorization.
This limited warranty does not apply to any part or component that is damaged in transit or
when handling, has been subject to misuse, has not been installed, operated or serviced
according to the Seller’s instructions, or has been operated beyond the seller’s – rated
capacity or has been altered in any way. Routine maintenance is not covered by this
warranty.
Seller ’s liability is limited to replacement of defective parts or components and does not
include any cost of labor (including, but not limited to, labor to remove and/or reinstall any
defective part), refrigerant or piping. Customer may elect to have unit fixed locally in which
case required replacement parts will be sent to customer at customer ’s expense.
IDS shall not be responsible for loss of use of any product, loss of time, inconvenience, or
damage to other equipment, or any other indirect or consequential damage with respect to
property whether as a result of breach of warranty, neglect, or otherwise.
THE WARRANTIES AND LIABILITIES SET FORTH ARE IN LIEU OF ALL OTHER
WARRANTIES EXPRESSED OR IMPLIED, IN LAW OR IN FACT, INCLUDING IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE.
IDS total liability, regardless of nature of claim shall not exceed original purchase price of
the product. If a product or component is replaced while under warranty, the applicable
warranty period shall not be extended beyond the original warranty time period.
The foregoing shall constitute the total liability of seller in the case of defective performance
of all or any of the equipment or services provided to Buyer. Buyer agrees to accept and
hereby accepts the foregoing as the sole and exclusive remedy for any breach or alleged
breach of warranty by Seller.
TROUBLESHOOTING
SYMPTOM CAUSE SOLUTION
Verify that there is power to the outlet and
that the plug is properly installed in outlet.
Power Supply
Machine
Doesn’t Run
Clean the filter or replace according to
instructions listed in manual
Air Filter is Clogged
Cannot Start
Dehumidifier Clear the blockage from inlet or outlet.
Loud Noise
E1 Warning
Light
Room Temperature Over 35℃ or
Below 10℃
The unit is outside the operating
temperature range. Modify the room
conditions so the temperature is between
10-35℃ and operation will commence.
Air Inlet or Outlet is Jammed
Machine Is Not Level
Filter Jammed
Unit not installed with 4 screws or
poor quality screws
Machine not supported by blocking
Machine is touching or rubbing an
unrelated item
Low spots, dips, or kinks are present
inside or outside machine.
Sensor or Sensor
Communication Issue
Sensor believes temperature is
below 10℃
Sensor believes temperature is
above 35℃
LO Warning
Light
HI Warning
Light
Water is
Leaking
Reposition unit so it is level
Replace the filter
Unit MUST be installed with 4 screws
provided.
Blocking is required
solate items to eliminate noise/vibration
Check sensor cable connection is secure
at both ends.
If room temperature is low., raise the
temperature and unit will function normally.
If not, replace the sensor.
If the machine can dehumidify normally,
you need to replace the main control board.
If the machine cannot dehumidify, you need
to refill the refrigerant.
Insure end of drain hose is not submerged
in water from property's drain source.
Re-route tubing to eliminate all low spots,
kinks, valleys, and dips.
Replace Sensor
If room temperature is low, raise the
temperature and unit will function normally.
If not, replace the sensor.
E5 warning
Light
E4 Problem with Pump
Possible refrigerant leak
Verify that the pump is properly installed
and functioning. If so, unplug the unit for
two minutes, then restart.