thermastor Quest DEH 3000 Manual

Quest 215 Dual
Quest Dry
Quest DEH 3000 / 3000R
Installation, Operation and Maintenance Instructions
This manual is provided to acquaint you with the DEH 3000
Controller so that installation and operation can proceed
successfully. Ultimate satisfaction depends on the quality of
installation and a thorough understanding of this equipment.
Installation, Operation and Maintenance Instructions
4201 Lien Rd
Madison, WI 53704 Toll-Free 1-877-420-1330
www.QuestClimate.com [email protected]
– Read and Save These Instructions –
Specifications subject to change without notice. 1
Features:
• Monitor and control moisture levels
• Manage fresh air ventilation
• Central fan integration
• A/C Sensor activates or deactivates the dehumidifier
• High temperature cutout
• Dry out cycle timer
• Auto reboot
• Ventilation options
TS-1174
03/20 Rev. A
Remote sensor available
with the DEH 3000R.

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Table of Contents
Safety Precautions.................................................................... 3
1. Specifications ........................................................................ 3
2. Installation ........................................................................4
3. Wiring ........................................................................ 5
3.1 Common Uses................................................................ 7
3.2 Dehumidifier Lock-O or Lock-On...........................8
3.3 Testing ........................................................................ 9
3.4 Troubleshooting........................................................... 10
4. Operation ........................................................................11
4.1 Display ........................................................................11
4.2 Set Up ........................................................................11
4.3 Setting Clock Time......................................................12
4.4 Adjusting the Relative Humidity Set Point ..............12
4.5 Temperature Cutout Programming...........................12
4.6 Fan Setting and Operation.........................................13
4.7 Damper Operation and Ventilation,
Manual (Hold) Mode...................................................13
4.8 Damper Operation and Ventilation,
Programmed Ventilation............................................ 14
4.9 Setting the Ventilation Program............................... 14
4.10 Running the Ventilation Program............................15
4.11 Calibration and O Set..............................................16
5. Remote Sensor Option .......................................................17
6. Warranty .......................................................................18

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Safety Precautions
Read the installation, operation and maintenance instructions carefully before installing and operating this device. Proper
adherence to these instructions is essential to obtain maximum benefit from your Quest DEH 3000 Controller.
READ AND SAVE THESE INSTRUCTIONS.
WARNING!WARNING!
THIS SYMBOL MEANS IMPORTANT INSTRUCTIONS. FAILURE TO HEED THEM CAN
RESULT IN SERIOUS INJURY OR DEATH.
READ THE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS CAREFULLY BEFORE
INSTALLING AND OPERATING THIS DEVICE. PROPER ADHERENCE TO THESE INSTRUCTIONS IS
ESSENTIAL TO OBTAIN MAXIMUM BENEFIT FROM YOUR QUEST DEHUMIDIFIER.
CAUTION!CAUTION!
THIS SYMBOL MEANS IMPORTANT INSTRUCTIONS. FAILURE TO HEED THEM CAN
RESULT IN INJURY OR MATERIAL PROPERTY DAMAGE.
DEH 3000 Part Number: 4027370
DEH 3000R Part Number: 4028531
Operating Voltage: 24 VAC
Max Current - DMP, COMP, FAN: 1 Amp each
Humidity Range/Accuracy: 10 - 95% RH, ± 5%
Auxillary Relay Capacity: 5 Amps, 24 VAC
Temp Range/Accuracy: 30°-90° F, 2%
Dimensions:
Width: 1.06"
Height: 4.19"
Length: 4.95"
1. Specifications

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2. Installation
Install the DEH 3000 control or the remote sensor portion of the DEH 3000R in a central area of the structure
where it will sense the relative humidity of the structure accurately. Do not install the control panel or remote sensor
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.
Mounting Hole
Mounting Hole
24 V COM
DMPR DEHU FAN
ON-Detect
Common
OFF-Detect
Normally
Open
Common
Normally
Closed
Optional
Use Optional
Use

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3. Wiring
WARNING!WARNING!
DO NOT ALLOW THE YELLOW WIRE OR +24V TERMINAL ON THE QUEST DEHUMIDIFIER TO COME
IN ELECTRICAL CONTACT WITH THE RED/WHITE WIRES OR COM/DMPR TERMINALS ON THE
QUEST DEHUMIDIFIER OR DAMAGE TO THE TRANSFORMER WILL RESULT.
WARNING!WARNING!
THE REMOTE CONTROL OF THE QUEST DEHUMIDIFIER OPERATES ON A LOW VOLTAGE CIRCUIT 24
VAC AND MUST NEVER CONTACT OR BE CONNECTED TO A HIGH VOLTAGE CIRCUIT.
WARNING!WARNING!
UNPLUG THE QUEST DEHUMIDIFIER BEFORE WIRING THE DEH 3000/R.
The installer must supply all field wiring, including the wiring between the Quest dehumidifier and the DEH 3000/R.
Some of the control wires or terminals on the dehumidifier may not be used in some control situations and should be left
disconnected with wire nuts taped onto the stripped ends (if necessary).
Be sure to consult the electrical schematic in this manual or the internal electrical box of the Quest dehumidifier before
making any control connections as it may vary by model.
Terminal Block Configuration Version 2Terminal Block Configuration Version 1
QUEST DEHUMIDIFIER QUEST DEHUMIDIFIER
DEH 3000 DEH 3000

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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 DEH 3000/R and the terminal labeled
“DMP” on the DEH 3000/R (Page 13). Leave the “DMP” terminal unused if a motorized damper is not used.
WARNING!WARNING!
ONLY CONNECT THE DMPR TERMINAL TO THE CONTROL IF IT IS WIRED IN A CIRCUIT THROUGH
AN ELECTRIC DAMPER, OTHERWISE TRANSFORMER DAMAGE MAY RESULT.
Standard Wire Colors for Thermostats:
24VAC Red R
Call for Heat White W or W1
Force Fan On Green G
Compressor
Call for Cooling Yellow Y or Y1
Terminal Block Control Operation:
Terminal Function Version 1:
COM 24Vac Power Transformer Neutral Side
FAN Fan Control
24V Transformer High Side
DEHU Dehumidification
(Fan and Compressor) Control
DMPR 24Vac Power Transformer Neutral Side
* Spare Terminal (Open)
Terminal Function Version 2:
COM 24Vac Power Transformer Neutral Side
FAN Fan Control
24V Transformer High Side
DEHU Dehumidification
(Fan and Compressor) Control
FLOAT External low voltage float switch or water
sensor (use normally closed switch)
FLOAT External low voltage float switch or water
sensor (use normally closed switch)
NO
COM
NC
Auxiliary Relay Operation
It may be desirable to coordinate fan operation
of the central heating/cooling system with
dehumidifier fan operation. The DEH 3000/R
contains a relay that provides this ability.
The relay terminals labeled NC, COM and NO
operate according to the following chart:
FAN COM to NO COM to NC
ON CONNECTED OPEN
OFF OPEN CONNECTED

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3.1 Common Uses
(assuming standard thermostat wiring colors as noted):
Lock-Out the A/C During Dehumidifier Fan Operation (Figure 1)
This will turn o the A/C whenever the dehumidifier fan runs.
1. Wire the Yellow thermostat terminal to the NC terminal on the DEH 3000/R.
2. Run the Yellow wire from the A/C unit to the COM terminal on the DEH 3000/R.
Energize the A/C Central Fan During Dehumidifier Fan Operation (Figure 2)
To automatically run the A/C FAN when the dehumidifier fan runs.
1. Attach a second Green wire to the FAN terminal on the thermostat.
2. Connect the new Green wire to the COM terminal on the DEH 3000/R.
3. Run a wire from the Red terminal on the thermostat to the NO (Normally Open) terminal on the DEH 3000/R.
Figure 1
DEH 3000
HVAC THERMOSTAT
NC
COM
RED
GREEN
YELLOW
COMP
FAN
24VAC
YELLOW
A/C
UNIT
A/C
TRANSFORMER
COM
BLAC
K
Figure 2
DEH 3000
HVAC THERMOSTAT
NO
COM
RED
GREEN
GREEN
COMP
FAN
24VAC
A/C
UNIT
A/C
TRANSFORMER
COM
BLAC
K
YELLOW
RED

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3.2 Dehumidifier Lock-O or Lock-On
A/C Sensor Feature
To automatically activate or deactivate the dehumidifier when the air
conditioner runs.
Activate Dehumidification When the A/C is Running
(Figure 3)
A voltmeter is required for the next steps to ensure the correct wiring
from the A/C transformer is used to set up the Lock-On dehumidifier
function.
1. The common wire from the existing A/C transformer (usually Black)
must be attached to the “COM” sensor terminal between “ON-D”
and “OFF-D” on the DEH 3000/R.
TIP: The common wire can be identified as the wire from the A/C transformer that reads 0 volts between it and the Yellow air conditioning
call for cooling wire. The incorrect wire will give a 20 to 28 volt reading.
2. Another Yellow wire must be added to the thermostat Yellow terminal and run to the “OND” sensor terminal on the DEH
3000/R.
ON-D
COM
OFF-D
Deactivate Dehumidification When the A/C is Running (Figure 4)
A voltmeter is required for the next steps to ensure the correct wiring from the A/C transformer is used to set up the
Lock-O dehumidifier function.
1. The common wire from the existing A/C transformer (usually Black) must be attached to the “COM” sensor terminal
between “ON-D” and “OFF-D” on the DEH 3000/R.
TIP: The common wire can be identified as the wire from the A/C transformer that reads 0 volts between it and the Yellow air
conditioning call for cooling wire. The incorrect wire will give a 20 to 28 volt reading.
2. Another Yellow wire must be added to the thermostat Yellow terminal and run to the “OFFD” sensor terminal on the
DEH 3000/R.
Figure 3
DEH 3000
HVAC THERMOSTAT
ON-DETECT
COM
RED
GREEN
COMP
FAN
24VAC
A/C
UNIT
A/C
TRANSFORMER
COM
BLAC
K
YELLOW
YELLOW
BLAC
K
Figure 4
DEH 3000
HVAC THERMOSTAT
OFF-DETECT
COM
RED
GREEN
COMP
FAN
24VAC
A/C
UNIT
A/C
TRANSFORMER
COM
BLAC
K
YELLOW
YELLOW
BLAC
K

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3.3 Testing
Verify the wiring connections.
WARNING!WARNING!
ONLY CONNECT THE DMPR TERMINAL TO THE CONTROL IF IT IS WIRED IN A CIRCUIT THROUGH AN
ELECTRIC DAMPER, OTHERWISE TRANSFORMER DAMAGE MAY RESULT.
After checking the wiring, this short test will confirm proper hook-up.
1. Install front cover of the DEH 3000/R; connect the top first, then the bottom.
2. Plug in the Quest dehumidifier. The DEH 3000/R should power up.
3. Turn the DEH 3000/R 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
increase the RH “SETPOINT”.
After running the dehumidifier compressor, the DEH 3000/R applies a 10 minute restart lockout on all functions. You will
have to wait for the restart lockout to expire.
5. Verify FAN-only operation:
a. Check the “VENT” mode on the display, it will either be “CLOSED” or “OPEN”. If it is “CLOSED”, go to the next
step. If it is “OPEN”, press and hold the “VENT” key until “OPEN” flashes on the display, release the key and then
press it one more time. “OPEN” will change to “CLOSED”. Don’t touch the keys for several seconds until it stops
flashing.
b. Press and hold the “FAN” button until “AUTO” begins flashing on the display, release it, and then press it again to
switch the fan to the “ON” setting.
c. Confirm that the Quest fan is ON. Quest compressor must be OFF. Ventilation damper (if used) should be CLOSED.
6. Verify optional VENT operation (if motorized damper is installed):
a. Press and hold the “FAN” button until “ON” flashes on the display.
b. Release the “FAN” button, then press it again to switch fan operation to “AUTO”.
c. Press and hold the “VENT” button until “CLOSED” flashes on the display.
d. Release the “VENT” button, then press it again to switch vent mode to “OPEN”.
e. Confirm that the Quest fan is ON. Ventilation damper is OPEN. Quest compressor must be OFF.
f. Press and hold the “VENT” button until the “OPEN” flashes on the display.
g. Release the “VENT” button, then press it again to switch vent mode to “CLOSED”.
WARNING!WARNING!
DO NOT MAKE ANY OTHER CONNECTIONS OR TRANSFORMER DAMAGE MAY RESULT.
7. Verify any additional optional control operations such as fan interlock or A/C lock-out.
8. Proceed to the Operation section (Page 11).

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Symptom Possible Reason Troubleshooting Procedure
CAUTION!CAUTION!
TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED HVAC TECHNICIAN.
1. Verify unit has power.
2. Turn unit o then on.
3. Disconnect the unit from power source then
re-apply power to the unit. Display should
now operate.
No display on initial
start up.
This is often the result of
a drained capacitor. The
capacitor will recharge once
power is applied or re-applied
to the unit.
3.4 Troubleshooting
WARNING!WARNING!
ELECTRICAL SHOCK HAZARD. ELECTRICAL POWER MUST BE PRESENT TO PERFORM SOME
TESTS. THESE TESTS SHOULD BE PERFORMED BY A QUALIFIED SERVICE PERSON.
Function not
working properly.
1. Verify wiring.
2. Verify voltage with voltmeter.
Dehumidifier not
working properly.
See chart below:
Wire Terminal
Connections Connections Operation
Yellow & Blue 24V and DEHU Fan & Compressor
Yellow & Green 24V and FAN Fan Only
Note: A jumper or normal closed float switch must be
installed from FLOAT to FLOAT.

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4. Operation
On the display screen, a solid “O” in front of any of the 3 functions (SETPOINT, VENT, FAN) indicates the function is
operating. A flashing “O” indicates it is in a wait mode and not available at the moment. No “O” indicates the function is
currently OFF.
Solid “O” Before Indicates
SETPOINT Dehumidifier on
VENT Fresh air ventilation cycle in progress
FAN Fan on
Wait mode is a factory-programmed time period meant to prevent short cycles. This extends the life of the dehumidifier.
When a flashing “O” is encountered, the unit is in wait mode and IT COULD BE UP TO 10 MINUTES BEFORE
OPERATION RESUMES.
4.1 Display
• Whenever there is power to the control, it will display the time, the day, %RH,
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 30 seconds.
• Time and Day are displayed at the top of the screen.
• RH and Temperature are displayed in real time.
• A solid “O” before the SETPOINT, VENT, OR FAN indicates the function is
operating.
• A flashing “O” before the SETPOINT, VENT, OR FAN indicates the unit is
in wait mode.
• When the system is OFF, the control will display the time, day, %RH, and
temperature.
• When the unit is shipped, it is in manual (hold) mode.
4.2 Set Up
During the set-up process, if you make a mistake, simply continue. You can
always go back to adjust the settings. If you leave the control alone and don’t
touch any buttons for 10 seconds, the control will remember any changes made
and return to the normal display screen, allowing you to proceed to the next step.
For Installer and Homeowner:
DEH 3000/R ON
DEH 3000/R OFF

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4.3 Setting Clock Time
1. Press and hold the “CLOCK” button. The hour display will flash. Release the button.
2. Use the up/down “RH” buttons to change the value.
3. Press the “CLOCK” button again and the minute display will flash. Use the “RH” buttons to change the value.
4. Press the “CLOCK” button again and AM or PM will flash. Use the “RH” buttons to change the value.
5. Press the “CLOCK” button again and the day display will flash. Use the “RH” buttons to change the value.
6. Don’t touch any buttons for several seconds until the display stops flashing, this will save your settings. If you need to change
anything, go back to step #1.
4.4 Adjusting the Relative Humidity “SETPOINT”
The DEH 3000/R 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. It has no eect on
the optional VENT (fresh air ventilation) or FAN (household air recirculation)
functions if they are being used.
The standard range that the dehumidifier holds around your “SETPOINT”
is 3%. With a setpoint of 50%, the dehumidifier will run until the relative
humidity reaches 47%. The dehumidifier will then switch o until the relative
humidity reaches 53%.
If the setpoint is higher than the ambient relative humidity, the space does not need to be dehumidified,
so the dehumidifier will not run.
Example: Setpoint: 50% RH
Current condition: 45% RH –The dehumidifier will be o (no “O” indicator will be displayed).
If your setpoint is below the ambient condition, the dehumidifier will be on and “O” will display.
Example: Setpoint: 50% RH
Current condition: 55% RH –The dehumidifier will be on (“O” displayed).
4.5 Temperature Cutout Programming
Dehumidifiers produce heat when dehumidifying and depending upon outside conditions, the ventilation function may also
introduce warm air. Some conditions may introduce enough heat to drive household temperatures up. The DEH 3000/R
temperature cutout feature disables all Quest operations if household 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 CUTOUT” is highlighted. Then press the “PROGRAM ENTER”
button again to select it. Now use the “RH” up or “RH” down buttons to adjust the setpoint. Press “PROGRAM ENTER”
to return to the home screen.
Personal Settings Reference List
Please record your settings here.
Function Factory Setting My Setting
SETPOINT (%RH) 50%
VENT Closed
FAN Auto
TEMP CUTOUT 99°

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4.6 Fan Setting and Operation
Use the “FAN” button to change the fan operation. There are 2 choices for fan operation: “ON” or “AUTO”. The factory
preset is “AUTO”.
“ON” –The fan in the Quest dehumidifier will run continuously. This does not aect either the dehumidification or
ventilation functions of the system. The system may or may not be ventilating or dehumidifying while the fan is running. This
setting is commonly used for maximum air filtration and/or air recirculation.
“AUTO” – Indicates the fan will run when the DEH 3000/R calls for dehumidification or ventilation.
If the control has not called for dehumidification for 3 hours, the control will automatically run the dehumidifier fan for 10
minutes.
After a dehumidification cycle, the fan automatically shuts o for 10 minutes. This pause allows the water to drain from the
dehumidifier.
A solid “O” indicates the fan is operating. A flashing “O” indicates the fan is in a wait mode. No “O” indicates the fan is
OFF.
To set the operation:
1. Press and hold the “FAN” button. The current fan setting will begin
to flash on the display. Release the button.
2. Press the “FAN” button to toggle between the “ON” and “AUTO”
modes.
With the fan in the “AUTO” mode, 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.
4.7 Damper Operation and Ventilation, Manual (Hold) Mode
The “VENT” setting controls the ventilation function of the system. It has
no control over the dehumidification function. In order to provide
ventilation, the motorized damper must be open and the fan must be
running. The controller takes care of these two functions automatically
so that whenever the damper is open, the fan is running.
The ventilation indicator “O” will be displayed whenever the unit is
ventilating. The fan operation indicator “O” will also be displayed.
There are three damper operation modes:
1. “OPEN” – hold mode: The damper will be open and the dehumidifier
fan will be continuously operating to introduce fresh air into the space.
Use this mode for continuous fresh air ventilation. The fan is always
on when the damper is open.
2. “CLOSED” – hold mode: The damper will never open, and the
dehumidifier will not ventilate. The fan will still operate normally for
recirculation and dehumidification.
3. “PROGRAM” mode: The DEH 3000/R will operate the motorized
damper and the dehumidifier fan according to the programmed
ventilation schedule (Page 14).
The factory preset for the “VENT” setting is “CLOSED”.
To set “OPEN” – hold or “CLOSED” – hold ventilation operation:
1. Press the “VENT” button. The current setting will begin to flash on the display. Release the button.
2. Press the “VENT” button again to switch between “OPEN” and “CLOSED”.
3. Leave the control alone for 10 seconds and your settings will be saved.

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4.8 Damper Operation and Ventilation, Programmed Ventilation
This example shows the system in program mode denoted by the
schedule 15 minutes on, 5 minutes o and the word “RUN” in the
lower right corner of the display.
The DEH 3000/R will operate fresh air ventilation according to your
ventilation program. The control 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 schedule has:
• “START” time when the ventilation schedule begins
• “OPEN FOR” duration for the amount of time the damper stays open in 5 minute intervals from 0 to 60
• “CLOSED FOR” duration which closes the damper for a specified time in 5 minute intervals from 0 to 60
4.9 Setting the Ventilation Program
1. Press the “PROGRAM ENTER” button until the menu to the
right appears.
2. Using the up/down “RH” buttons, highlight “PROGRAM” and
select it by pressing the “PROGRAM ENTER” button.
You can select from:
“MONFRI” “SATSUN” for separate weekday and weekend
schedules, or “MONSUN” which gives you equal weekday and weekend
schedules.
3. Using the up/down “RH” buttons, highlight and then select
one of the two choices.

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Setting the Ventilation Program (Continued)
The display to the right shows the menu when a separate weekday
and weekend schedule is selected (“MON-FRI” “SAT-SUN”).
1. Enter the starting time for weekdays using the up/down “RH”
buttons to change the time.
2. Press the “PROGRAM ENTER” button to switch to the “OPEN FOR”
setting. Using the up/down “RH” buttons, change the duration that
the damper will ventilate fresh air.
3. Press the “PROGRAM ENTER” button to switch to the “CLOSED FOR” setting. 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 12:00AM until 11:59AM.
Night schedule is available anytime from 12:00PM until 11:59PM.
4. Press “PROGRAM ENTER” again to go to the “MONFRI” night schedule. Repeat the steps listed above for this and
the “SATSUN” day and night schedules.
When you have finished programming your schedule (either the 7-day version or the weekday/weekend split version), use
the down “RH” button to highlight the EXIT option and then press “PROGRAM ENTER”
to select it.
4.10 Running the Ventilation Program
Press and hold the “PROGRAM ENTER” button until the “PROGRAM” screen appears as shown below.
Use the down “RH” button to highlight “RUN PROGRAM”.
Then press “PROGRAM ENTER” to select it. The display below will appear.

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4.11 Calibration and Oset
In the event the display shows a humidity reading that is dierent than that in the room, the RH or temperature display can
be adjusted to show a value higher or lower.
Calibration mode will be entered by simultaneously holding the SET POINT up key and ON/OFF key, then pressing the
PROGRAM key for 5 seconds.
The RH will flash. It can be adjusted up or down by pressing the SET POINT keys. By pressing the PROGRAM key again,
the “TEMPERATURE” starts flashing. The temperature can be adjusted the same way. Pressing the PROGRAM key again
exits this mode. If no key is pressed for 5 seconds, the control exits this mode.
Calibration Reset While setting the oset (RH or Temp is Flashing)
If you hold the program button for two seconds, the oset will be set to the default of 0.

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5. Remote Sensor Option
The remote sensing option is used when an installation requires mounting the DEH 3000 out of the conditioned space or
when it is desired to specifically monitor and control the conditions at a particular location in a larger conditioned space.
Both the need for and location of the remote sensor should be determined by a heating/cooling professional. In most
installations, the onboard sensor in the DEH 3000 will be sucient to monitor and control the conditioned space.
Install and Wiring Instructions
Routing Signal Wires
You will be required to supply and route 24 gauge, 4 conductor solid wire (2-line telephone wire) between the DEH
3000R controller and the remote sensor location. The wiring run should be no longer than 100 ft. Avoid routing this
interconnect wire parallel to high voltage wiring. Maintain a distance of 2 ft. or more from high voltage lines.
Sensor Connection
The sensor can be mounted to a wall or ceiling surface. Ideal sensor location is 5 ft. above the floor. Wires should exit
through a ½” diameter hole in the mounting surface at the mounting location. Use the provided splice connectors to
connect the 4 wires from the remote sensor to the user-supplied interconnect wire. Be sure to keep proper colors attached
to each other.
Sensor Mounting
You will need two screws to mount the sensor. Use the two slotted holes to mount the base of the sensor to the wall and
then snap the cover into place.
Controller Connection
Use the provided splice connectors to connect the 4 wires from the DEH 3000R to the user-supplied interconnect wire.
Be sure to keep the proper colors attached to each other.
Continue with the installation as described in the rest of this manual.
This section is applicable only to customers who have purchased a remote sensor package.
The standard DEH 3000 controller does not oer remote functionality.
WARNING!WARNING!
THE USE OF SPRAY PAINT ON THE SENSOR HOUSING MAY DAMAGE THE SENSOR AND IS NOT
COVERED BY THE PRODUCT WARRANTY.
NOTE: If the DEH 3000R is used, the external sensor must be connected in order to
receive a signal for temperature and relative humidity.

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Quest DEH 3000 / 3000R Installation, Operation and Maintenance Instructions
18 www.QuestClimate.com
[email protected]
Warrantor:
Therma-Stor LLC
4201 Lien Road
Madison, WI 53704
Telephone: [phone]
Who Is Covered: This warranty extends only to the original residential end-user of the DEH 3000/R Dehumidifier & Ventilation System
Controller, and may not be assigned or transferred.
First Year Warranty: Therma-Stor LLC warrants that, for one (1) year the DEH 3000/R Dehumidifier & Ventilation System Controller will
operate free from any defects in materials and workmanship, or Therma-Stor LLC will, at its option, repair or replace the defective part(s), free
of any charge.
End-User Responsibilities: Warranty service must be performed by a Servicer authorized by Therma-Stor LLC. If the end-user is unable to
locate or obtain warranty service from an authorized Servicer, he should call Therma-Stor LLC at the above number and ask for the Therma-Stor
LLC Service Department, which will then arrange for covered warranty service. Warranty service will be performed during normal working hours.
The End-user must present proof of purchase (lease) upon request, by use of the warranty card or 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 misuse, abuse, lack of normal care, corrosion, freezing, tampering, modification, unauthorized or improper repair or installation, accident,
acts of nature or any other cause beyond Therma-Stor LLC’s reasonable control.
Limitations and Exclusions: If any DEH 3000/R 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
time, if any, that the DEH 3000/R Dehumidifier & Ventilation System Controller is out of service while awaiting covered warranty service).
UPON THE EXPIRATION OF THE WRITTEN WARRANTY APPLICABLE TO THE DEH 3000/R Dehumidifier & Ventilation System
Controller OR ANY PART THEREOF, ALL OTHER WARRANTIES IMPLIED BY LAW, INCLUDING MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE, SHALL ALSO EXPIRE. ALL WARRANTIES MADE BY THERMA-STOR LLC ARE SET
FORTH HEREIN, AND NO CLAIM MAY BE MADE AGAINST THERMA-STOR LLC BASED ON ANY ORAL WARRANTY. IN NO
EVENT SHALL THERMA-STOR LLC, IN CONNECTION WITH THE SALE, INSTALLATION, USE, REPAIR OR REPLACEMENT OF
ANY DEH 3000/R Dehumidifier & Ventilation System Controller OR PART THEREOF BE LIABLE UNDER ANY LEGAL THEORY FOR
ANY SPECIAL, INDIRECT 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.
Some states do not allow limitations on 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 limitation may not apply to you.
Legal Rights: This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
6. Warranty

1-877-420-1330
Quest DEH 3000 / 3000R Installation, Operation and Maintenance Instructions
19 www.QuestClimate.com
[email protected]

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