Thermastor Quest DEH 3000 Handbuch

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,

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

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)

COM

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

COM

RED

GREEN

YELLOW

COMP

FAN

24VAC

YELLOW

A/C

UNIT

A/C

TRANSFORMER

COM

BLAC

Figure 2

DEH 3000

HVAC THERMOSTAT

COM

RED

GREEN

COMP

FAN

24VAC

A/C

UNIT

A/C

TRANSFORMER

COM

BLAC

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

YELLOW

BLAC

Figure 4

DEH 3000

HVAC THERMOSTAT

OFF-DETECT

COM

RED

GREEN

COMP

FAN

24VAC

A/C

UNIT

A/C

TRANSFORMER

COM

BLAC

YELLOW

BLAC

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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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