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LOCATION CONSIDERATIONS

•  Allow sufficient clearance for filter removal and 

to prevent airflow obstruction

•  Electrical service access will require the removal 

of the side panel shown� Allow sufficient space 
for service on this side of the unit�

DRAIN INSTALLATION

The drain outlet on the dehumidifier can be hard piped using a 3/4" PVC Slip x 3/4" MNPT fitting and 3/4" nominal drain tubing or the provided 3/4" 
MNPT x 3/4" hose barb fitting and 3/4" clear PVC tubing can be used to drain the dehumidifier� Always maintain a constant downward slope from the 
dehumidifier to the drain and do not allow soft tubing to curl up which may result in air lock� 

Note:

 PTFE thread seal tape is recommended for the 

threaded connection and 

hand tighten only

� If hard pipe is used, PVC primer and cement is recommended for the slip fit connection�

A level surface is required to ensure proper drainage from the dehumidifier�

Always install the dehumidifier in a condensate pan when locating in or above a finished space� Adhere to local codes regarding draining of the 
condensate pan�

CONDENSATE PUMP AND FLOAT SWITCH

If a condensate pump is needed, install it in the condensate pan if 
installed� 

Install a condensate overflow safety switch (i�e� float switch) in the 
condensate pan, remove the factory installed jumper wire between 
the Float Switch terminals on the control and wire the float switch to 
the dehumidifier as shown in 

FIGURE 3

� Overflow safety switches on 

condensate pumps can be wired to the Float Switch terminals in a 
similar fashion�

TOP VIEW

FILTER

MINIMUM

CLEARANCE 

FOR FILTER

(EITHER SIDE)

20"

6" MINIMUM 

CLEARANCE

FOR PROPER 

AIR FLOW

ELECTRICAL SERVICE ACCESS THIS SIDE

6 FT. POWER CORD

90-2020

FIGURE 2 

– FILTER ACCESS CLEARANCE

FL

OAT

Swit

ch

DH

DH

NORMALLY CLOSED

FLOAT SWITCH

90-1857

FIGURE 3 

– FLOAT SWITCH WIRING

3

Summary of Contents for 1872

Page 1: ...tenance 3 Do not use in pool applications Pool chemicals can damage the dehumidifier 4 Do not use solvents or cleaners on or near the circuit board Chemicals can damage circuit board components 5 Wait 24 hours before running the unit if it was not shipped or stored in the upright position 6 Do not use dehumidification to prevent window condensation in the winter To address window condensation use ...

Page 2: ...F 0 RH 99 RH non condensing Filter MERV 8 washable Airflow EXTERNAL STATIC PRESSURE w c AIRFLOW CFM 0 0 310 0 2 270 0 4 225 0 6 175 0 7 w c is maximum design external static pressure REMOVE SHIPPING BRACKET IMPORTANT Cut the strap securing the compressor shipping support bracket and remove the strap shipping bracket screws and bracket See FIGURE 1 CLIP OFF PLASTIC STRAP REMOVE SCREWS 2 DISCARD SHI...

Page 3: ...the slip fit connection A level surface is required to ensure proper drainage from the dehumidifier Always install the dehumidifier in a condensate pan when locating in or above a finished space Adhere to local codes regarding draining of the condensate pan CONDENSATE PUMP AND FLOAT SWITCH If a condensate pump is needed install it in the condensate pan if installed Install a condensate overflow sa...

Page 4: ... for an extended period when first installed Your dehumidifier is equipped with two features that protect against unwanted energy consumption Defrost is a normal operating mode that helps to prevent significant ice formation on the refrigeration system coil The dehumidifier display will show DEFROSTING when operating in this mode This mode can occur when there is not enough air moving through the ...

Page 5: ...warm water and a mild detergent solution 5 Shake off the excess water from the filter 6 Replace the filter making sure the filter is secured in both the top and bottom filter rails 7 Replace the filter access door 8 Turn the ON OFF switch ON 9 Press the and buttons simultaneously for 3 seconds to clear the service message CHECK THE DRAIN The drain should be checked annually to ensure there are no ...

Page 6: ... The on board control can be located on the top of the dehumidifier or can be relocated to the front of the dehumidifier if the control can not be seen accessed in the top orientation TO MOVE THE CONTROL 1 Remove the front control panel cover 2 Remove the filter access door and filter 3 Detach the on board control by removing the four 4 screws around the control Note Use one hand to support the bo...

Page 7: ...ted to the supply side of the HVAC system Use a minimum of 12 of flex duct at the dehumidifier inlet and outlet to prevent vibration noise transmission When ducting return to return preferred the dehumidifier must be wired to turn on the HVAC fan when operating When ducting return to supply allow adequate space before the first branch duct to ensure the warm dehumidified air is thoroughly mixed wi...

Page 8: ...is not ducted to the HVAC system REQUIRED COMPONENTS 10 Ductwork Grilles with 10 Duct Collars DEHUMIDIFIER DEHUMIDIFIED AIR IS SUPPLIED TO DUCTED SPACE AIR IS PULLED FROM DUCTED SPACE 10 MIN GRILLE WITH 10 DUCT COLLAR 2 PLACES DEHUMIDIFIED SPACE 90 2026 FIGURE 11 STAND ALONE DUCTED 8 ...

Page 9: ...ower board Terminal should be fully seated on the power board pins 2 Remove the side access panel and verify that the sensor is secured to the suction line 3 If the sensor is connected and secured to the refrigeration line proceed to the next step 4 Reset the fault by cycling power to the dehumidifier 5 Turn the humidity setting down below room home humidity level to make a dehumidification call 6...

Page 10: ...nstalled on the outlet side of the dehumidifier Check if backflow damper is blocked or stuck and remove obstruction Dehumidifier blower is running but compressor is not Float switch open If float switch installed check connections at control board and empty condensate pan If no float switch installed check that the jumper is installed at the float switch terminals on the control board Coil frostin...

Page 11: ...Deh 5449 8 Backflow Damper 10 Deh 5450 9 Inlet Duct Panel AA Deh 5451 10 Cover Outlet AA Deh 5452 No Part Description Part No 11 Fan 130pt Deh with 10MFD Capacitor 5572 12 Wire Harness Power Deh 5454 13 Sensor Low Temperature Deh 5455 14 Sensor High Temperature Deh 5456 15 Capacitor 50MFD 370VAC 5594 16 Capacitor 10MFD 250VAC 5573 17 RH Sensor Deh 5460 18 Drain Tube Fitting 5665 19 Compressor Over...

Page 12: ...ULTING FROM ANY BREACH OF THE AFORESAID IMPLIED WARRANTIES OR THE ABOVE LIMITED WARRANTY IS EXPRESSLY EXCLUDED THIS LIMITED WARRANTY IS VOID IF DEFECT S RESULT FROM FAILURE TO HAVE THIS UNIT INSTALLED BY A QUALIFIED HEATING AND AIR CONDITIONING CONTRACTOR IF THE LIMITED WARRANTY IS VOID DUE TO FAILURE TO USE A QUALIFIED CONTRACTOR ALL DISCLAIMERS OF IMPLIED WARRANTIES SHALL BE EFFECTIVE UPON INSTA...

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