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1-800-533-7533 

Quest 

DRY 

150                 Installation, Operation and Maintenance Instructions

  

www.thermastor.com

[email protected]

quest

Asset Protection and IAQ Solutions

quest

FOR HVAC INSTALLER ONLY

5.  DEH 3000 Digital Control Installation Instructions

5.1 Specifications

Part Number: 

4026570

Model: 

DEH 3000 Digital Control

Electrical: 

24 VAC

Humidity Range: 

10 – 95% RH

Humidity Accuracy: 

+/- 5%

Output: 

3 Amps 24 VAC

Relay Capacity: 

5 Amps

Temp Range/Accuracy:  2%
Size: 

4.95" wide x 4.19" high

5.2 Installation

This control panel must be installed in the conditioned space and in 
accordance with all applicable codes and standards. Follow the instructions 
below when installing and setting this control.

5.2A Install Instructions

1.   Separate the front panel from the back panel by depressing the middle 

sections of the top and bottom of the front panel.

2.   Line the back panel up against the wall or flat surface onto which it is to 

be mounted and drill in the appropriate mounting holes.

3.   Insert the screws and tighten down so they extend approximately 1/8” from the back plate.
4.  Align the back panel so that the control is level.
5.  Tighten the screws to lock into position.
6.   Make the electrical connections to the terminals on the 

back panel as shown in the wiring diagram.

7.   Reassemble the front to the back panel. Connect at the 

top first, then at the bottom.

8.  Test connections (see Section 2.6)

5.2B Wiring
WARNING: DO NOT ALLOW THE YELLOW LEAD FROM 
THE Quest 

DRY

 150 TO CONTACT THE RED OR WHITE 

LEADS FROM THE Quest 

DRY

 150 OR DAMAGE TO THE 

TRANSFORMER WILL RESULT. UNPLUG Quest 

DRY

 150 

BASE UNIT BEFORE WIRING CONTROL.

The installer must supply the wiring between the Quest 

DRY

 150 and the control panel. Be sure to safely 

route the control wires to prevent damage during installation. Be careful not to cross the wires when 
connecting the Quest 

DRY

 150 and the remote control panel or damage to the transformer may result.

The remote control of the Quest 

DRY

 150 is powered by a low voltage circuit (24 VAC) and must 

NEVER

 

contact or be connected to a high voltage circuit. Some of the control wires leaving the Quest 

DRY

 150 may 

not be used with certain control panels and should be left safely disconnected with wire nuts taped onto the 
stripped ends. Be sure to consult the electrical schematic in this manual or on the front panel of the Quest 

DRY

 150 before making the control connections.

Control Part No. 4026570

FOR HVAC INSTALLER ONLY

Summary of Contents for Quest DRY 150

Page 1: ...and Maintenance Instructions P O Box 8680 Phone 608 222 5301 Madison WI 53708 Toll Free 1 800 533 7533 www thermastor com sales thermastor com Read and Save These Instructions Specifications subject...

Page 2: ...ilation Schedule 11 4 4C Automatic or Manual Mode 11 Controls Wiring Diagram 12 5 DEH 3000 Digital Control Installation Instructions 13 5 1 Specifications 13 5 2 Installation 13 5 2A Install Instructi...

Page 3: ...INDOORS IN A SPACE THAT IS PROTECTED FROM RAIN AND FLOODING Install the unit with space to access the back or side panels for maintenance and service DO NOT INSTALL UNIT WITH THE SERVICE PANELS INACCE...

Page 4: ...lbs 3 Installation 3 1 Location The Quest DRY 150 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 t...

Page 5: ...Y 150 OR DAMAGE TO THE TRANSFORMER WILL RESULT The Quest DRY 150 plugs into a common grounded outlet It draws around 6 9 Amps under normal operating conditions If used in a wet area pool spa room or b...

Page 6: ...n Sections 3 4A 3 4G requires consideration of the following points Duct Sizing For total duct lengths up to 25 use a minimum 10 diameter round or equivalent rectangular For longer lengths use a minim...

Page 7: ...lspace with an Existing Forced Air HVAC System It is recommended that a new separate return duct be installed for the Quest DRY 150 from a central area of the structure If this is not possible and if...

Page 8: ...o be adjusted and prevents flow of air between the ducting systems Contact the factory for assistance if necessary 3 4G Installation in a Structure with No Existing Forced Air HVAC System When install...

Page 9: ...ntrols the humidity of the space The humidity fan control panel contains an adjustable humidity control and a fan switch The panel has a cover that must remain open to the air within the living space...

Page 10: ...e unit is used for air circulation and filtration to achieve maximum indoor air quality When the switch is ON air will be constantly filtered through the Quest DRY 150 and circulated throughout the st...

Page 11: ...operates on a 24 hour clock military time Then press the m button to set the minutes past the hour to start the ventilation Now with the ventilation start time set press the I O button The word OFF sh...

Page 12: ...from the unit to contact the red lead or the white lead from the unit or damage to the transformers will result Do not direct connect the white lead on the unit to the violet lead on the ventilation...

Page 13: ...5 Tighten the screws to lock into position 6 Make the electrical connections to the terminals on the back panel as shown in the wiring diagram 7 Reassemble the front to the back panel Connect at the...

Page 14: ...ing cooling system with dehumidifier operation The DEH 3000 features a relay that provides this ability The relay terminals labeled NC COM and NO operate according to the following chart Dehumidificat...

Page 15: ...EHUMIDIFIER ACTIVATES WHEN THE AIR CONDITIONER IS RUNNING The common wire on the thermostat transformer black needs to be wired with the yellow wire from the dehumidifier The Yellow wire from the ther...

Page 16: ...operation should be noted and ventilation damper if used should be closed 6 Verify ventilation damper operation if installed by disengaging from operation and engaging ventilating operation a Press an...

Page 17: ...touch any buttons for 10 seconds the control will remember any changes made and return to home 5 3C On Off Setting Press the ON OFF button to turn the system on or off When the system is on the setpo...

Page 18: ...at the humidity setpoint be set below 35 In order to dry the structure in the winter in a cold climate use the ventilation function of the system rather than the dehumidifier function Call the factory...

Page 19: ...ed by ON TIME OFF TIME Refer to section 3 8 With the damper in the OPEN hold mode the damper will be open and the fan of the system will be operating in order to introduce fresh air into the space Use...

Page 20: ...fresh air for 15 minutes then stop for 15 minutes This schedule of 15 minutes open 15 minutes closed will continue until the start time of the night schedule Press program enter again to go to the MO...

Page 21: ...000 is programmed with the following defaults A space is provided to make note of user inputs Setting Default My Setting RH setpoint 50 __________ Ventilation Operation Closed __________ Fan Setting A...

Page 22: ...roglass paper filter is available for the Quest DRY 150 This filter is rated as 90 95 efficient by the ASHRAE Dust Spot test method 52 76 The high efficiency pleated microglass paper filter should be...

Page 23: ...onstant pressure and temperature across the entire coil from inlet to outlet The mixture of gas and liquid refrigerant enter the accumulator after leaving the evaporator coil The accumulator prevents...

Page 24: ...eller fan relay 5 Defective impeller fan capacitor Impeller fan runs with fan switch ON Impeller fan does not run with ventilation timer activated 1 Defective ventilation timer 2 Time not correct on v...

Page 25: ...e humidity control the compressor and impeller fan should run 8 If these tests work the problem is most likely in the field control wiring 7 4 Refrigerant Charging If the refrigerant charge is lost du...

Page 26: ...d 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 10 Reconnect the wir...

Page 27: ...rchased If the Quest DRY 150 fails to operate as desired always check the settings of the controls to insure that they are correct Check that the controls are receiving 24Vac from the Quest DRY 150 Ch...

Page 28: ...e damper motor or damage to the motor may result DO NOT force the blade of the damper by hand or damage to the damper motor may result The damper opens in one direction only The damper rotates very sl...

Page 29: ...DRY 150 Installation Operation and Maintenance Instructions 29 www thermastor com sales questprotect com quest Asset Protection and IAQ Solutions quest FOR HVAC INSTALLER ONLY Electric Schematics FOR...

Page 30: ...rotection and IAQ Solutions quest 1 800 533 7533 Quest DRY 150 Installation Operation and Maintenance Instructions 30 www thermastor com sales questprotect com Pictorial Electrical Diagrams FOR HVAC I...

Page 31: ...D TO FILTER 8 4026472 1 TUBE DISCHARGE LINE 9 4026673 1 CONDENSOR 10 4026657 1 IMPELLER 11 4020924 1 RELAY BLOWER Item Part No Qty Description 12 4026687 1 45mFd CAPACITOR COMPRESSOR 13 4022487 1 TRAN...

Page 32: ...9 4024125 1 Control Panel Assembly Ventilation Timer Humidity 30 4023660 1 Controller Humidity 31 4023672 1 Duct Damper 6 Diameter Electrically Actuated not shown 32 4024153 1 Cover for Items 28 29 no...

Page 33: ...of the door in between the foam installation and the metal side Push down on the plastic door latch and swing door shut Once the door is shut release the door latch Collar Install Remove the 2 round...

Page 34: ...other reasonable and reliable means The end user is responsible for normal care This warranty only applies to residential applications and does not cover any defect malfunction etc resulting from misu...

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