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Installation, Operation and Maintenance Instructions

– Read and Save These Instructions –

This manual is provided to acquaint you with 
the Quest DEH 3000 so that installation, 
operation, and maintenance can proceed 
successfully. Ultimate satisfaction depends 
on the quality of installation and a thorough 
understanding of this equipment.

Quest DRY 150

Installation, Operation and Maintenance Instructions

4201 Lien Rd
Madison, WI 53704 

1-800-533-7533

www.QuestProtect.com [email protected] 

– Read and Save These Instructions –

Specifications subject to change without notice.

TS-487

12/12

1

Quest DEH 3000 Digital Control

Quest DEH 3000 Digital Control:

•  Digital control of relative humidity  

(Digital Set-Point)

•  Fan/Filter operation
•  Programmable ventilation timer
•  Sleek design
•  Large, easy-to-read backlit LCD display
•  High temperature cut-out
•  Dryout cycle timer
•  Auto reboot

quest

quest

Summary of Contents for DEH 3000

Page 1: ...st DRY150 Installation Operation and Maintenance Instructions 4201 Lien Rd Madison WI 53704 1 800 533 7533 www QuestProtect com sales thermastor com Read and Save These Instructions Specifications subject to change without notice TS 487 12 12 1 Quest DEH 3000 Digital Control Quest DEH 3000 Digital Control Digital control of relative humidity Digital Set Point Fan Filter operation Programmable vent...

Page 2: ...2 Wiring 4 2 3 Auxiliary Relay Operation 4 2 4 Dehumidifier Lockout 5 2 5 Location 6 2 6 Testing 6 3 Operation 7 3 1 Display 7 3 2 Setting 7 3 3 On Off Setting 7 3 4 Setting Clock Time 7 3 5 Setting Relative Humidity Setpoint 8 3 5A Operation 8 3 6 Fan Setting Operation 8 3 7 Damper Operation and Setting Ventilation 9 3 8 Intermittent Programmed Ventilation 9 3 9 Temperature Cutout Programming 11 ...

Page 3: ...he relative humidity of the structure accurately Do not install the control panel where it may not accurately sense the relative humidity such as near HVAC supply registers near exterior doors and windows or near a pool or spa Install in accordance with all applicable codes and standards 2 1 Install Instructions 1 Separate the front panel from the back panel by depressing the middle sections of th...

Page 4: ...E CONTROL IF IT IS WIRED IN A CIRCUIT THROUGH AN ELECTRIC DAMPER OTHERWISE TRANSFORMER DAMAGE MAY RESULT The White wire controls the optional motorized damper that can be installed into a fresh air duct This damper provides the ability to control fresh air ventilation using the ventilation timer function of the Quest DEH 3000 and the terminal labeled DMP See Section 3 8 Leave the DMP terminal unus...

Page 5: ...minal on the thermostat 2 Connect the new Green wire to the COM terminal on the Quest DEH 3000 3 Run a wire from the Red terminal on the thermostat to the NO Normally Open terminal on the Quest DEH 3000 2 4 Dehumidifier lock OFF or lock ON A C sensor feature To automatically activate or deactivate the dehumidifier when the air conditioner runs Activate dehumidification when the air conditioner is ...

Page 6: ...The Quest DEH 3000 should power up 3 Turn the Quest DEH 3000 ON by pressing the ON OFF button 4 Verify dehumidification operation by adjusting the RH SETPOINT to below the RH reading on the display Use the down RH button Confirm Quest fan and compressor operation Both should be ON now Increase the RH SETPOINT on the display to well above the RH reading on the display Press the RH up arrow to incre...

Page 7: ...ease the VENT button then press it again to switch vent mode to CLOSED Troubleshooting If any functions are not working properly check the wiring and connections A voltmeter may be used across terminals to verify voltage If there is concern about the dehumidifier not operating properly the leads exiting the QUEST dehumidifier may be connected according to the following chart Wire connections Opera...

Page 8: ...ill display the time the day relative humidity and temperature When the control is actually switched ON the RH setpoint fan status run mode program or hold and fresh air ventilation status is displayed When a key is pressed the display will light for approximately a minute The Time and Day is displayed at the top of the screen RH and Temperature are displayed in real time A solid O before the SET ...

Page 9: ...lashing this will save your settings If you need to change anything go back to step 1 3 6 Adjusting the relative humidity SETPOINT The Quest DEH 3000 senses the ambient relative humidity RH of the space in which it is located it comes factory preset to hold 50 relative humidity The relative humidity SETPOINT desired RH to be maintained operates the dehumidifier function of the Quest dehumidifier I...

Page 10: ...ode the fan will operate only when needed by other functions of the system The fan will remain OFF unless the system is dehumidifying or ventilating The fan always runs during dehumidification and ventilation and the fan O icon will be lit To completely turn the system OFF use the ON OFF button as described earlier 3 8 Damper Operation andVentilation Manual Hold Mode The VENT setting controls the ...

Page 11: ...l needs to be programmed to turn the ventilation function ON and OFF at the desired intervals This is done by programming the ventilation timer There are two programs available for ventilation 1 Monday through Sunday 2 Monday through Friday Saturday Sunday Each block of days has a morning schedule and a night schedule Morning is the first 12 hours of the day and night is the second 12 hours Each s...

Page 12: ...g Using the up down RH buttons change the duration that the damper will remain closed between ventilation cycles For the example given starting at 8 00AM in the morning the control will ventilate 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 Morning schedule is available anytime from 12 ...

Page 13: ...p The Quest DEH 3000 temperature cutout feature disables all Quest operations if temperatures reach the cutout setpoint In most installations this feature will not need to be used the cutout is factory set to 99 F If a lower temperature cutout is desired program the setpoint by pressing and holding the PROGRAM ENTER button until the PROGRAM screen appears Press the up down RH buttons until TEMP CU...

Page 14: ...per repair or installation accident acts of nature or any other cause beyond Therma Stor LLC s reasonable control LIMITATIONS AND EXCLUSIONS If any Quest DEH 3000 Dehumidifier Ventilation System Controller part is repaired or replaced the new part shall be warranted for only the remainder of the original warranty period applicable thereto but all warranty periods will be extended by the period of ...

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