Quest Engineering 105 Dual Manuel

Installation, Operation and Maintenance Instructions

This manual is provided to acquaint you with the

dehumidier so that installation, operation and

maintenance can proceed successfully. Ultimate

satisfaction depends on the quality of installation

and a thorough understanding of this equipment.

The dehumidier is built around tested engineering

principles and has passed a thorough inspection for

quality of workmanship and function.

Quest Dry

Installation, Operation and Maintenance Instructions

4201 Lien Rd Phone 608-237-8400

Madison, WI 53704 Toll-Free 1-800-533-7533

www.QuestProtect.com sales@QuestProtect.com

– Read and Save These Instructions –

Specications subject to change without notice. 1

Quest 105, 155, and 205 Dual

Water Removal Rates (Pints/Day)

105 pints 80˚F, 60% (AHAM) (105 Dual)

155 pints 80˚F, 60% (AHAM) (155 Dual)

205 pints 80˚F, 60% (AHAM) (205 Dual)

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PATENTS:

D570,988

8,069,681

The Quest 105 Dual provides 105 pints per day of water

removal at standard rating conditions (80ºF/60%RH)

while using only 4.9 amps/115V, and will effectively

control humidity in areas up to 2500 sq. ft.

The Quest 155 Dual provides water removal of 155

pints per day at 80ºF/60%RH using 8.0 amps/115V. The

155 conditions and controls areas up to 3600 sq. ft.

The Quest 205 Dual is the largest capacity of the group.

This unit removes up to 205 pints of water per day using

only 13.2 amps/115V and retains the same cabinet size

as the 105 and the 155. Ideally suited for structures with

high ceiling applications, the Quest 205 Dual effectively

controls inside environments up to 5,000 square feet.

Features:

• Industry-leading efficiency, most efficient on the

market today

• Plug-N-Play

• Patented, optimized air-to-air heat exchanger

• High-efficiency, long-life impeller fan

• Quiet operation and superior high static pressure

performance

• Superior air filtration (MERV-11 standard)

• Patent Pending Dual air distribution

• Auto-restart after power outages

• Environmentally friendly R410A refrigerant

TS-694

06/14

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Table of Contents

Safety Precautions ..................................................... 3

1. Intended Application(s).......................................... 4

2. Registrations.......................................................... 4

3.Specications ........................................................ 4

4 . Installation ........................................................... 4

4.1 Location ......................................................... 5

4.1A No Ducting ........................................... 5

4.1B Ducted Return and Supply .................... 6

4.1C Remote Area w/ Ducted Supply............. 6

4.1D Remote Area w/ Ducted Return............. 7

4.2 Electrical Requirements .................................. 7

4.3 Condensate (Water) Removal.......................... 8

5. Ducting ........................................................... 8

5.1 Supply Duct Kit .............................................. 8

5.2 Return Duct Kit............................................... 8

6. Operation ........................................................... 9

6.1 Humidity Control Adjustment ......................... 9

6.2 Blower (Fan) Switch ........................................ 9

7. Maintenance ......................................................... 9

7.1 Air Filter........................................................ 10

8. Service ......................................................... 10

8.1 Technical Description ................................... 10

8.2 Troubleshooting ............................................ 11

9. Service Parts List .................................................. 12

10. Accessory/Replacement Parts List....................... 12

11. Optional Remote Humidity Control................... 13

12. Wiring Diagram................................................. 14

Warranty ......................................................... 15

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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benetfromyourQuestDual

indoor air quality system.

READ AND SAVE THESE INSTRUCTIONS

•Thedeviceisdesignedtobeinstalled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 INACCESSIBLE.

•Avoiddirectingthedischargeairatpeople,oroverthe

water in pool areas.

•Ifusednearapoolorspa;becertainthereisNOchance

the unit could fall into the water, be splashed and that it is

plugged into a GFI GROUND FAULT INTERRUPT OUTLET.

•DO NOT use the device as a bench or table.

•DONOTplacethedevicedirectlyonstructuralmembers.

Provide vibration isolation in order to minimize operational

vibration and/or noise.

• AdrainpanMUSTbeplacedundertheunitifinstalled

above a living area or above an area where water leakage

could cause damage

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1. Intended Application for Quest Dual

The Quest Dual is designed to operate in temperatures between 56° and 95°F.

Inordertoefcientlycontrolhumiditylevels,theareainwhichthedehumidieristobeoperatedmustbe

freeofwaterintrusionorexcessivefresh(outside)airinltration.BeforeinstallingtheQuestDual,water

intrusionandairinltrationproblemsshouldbeaddressedornotedincalculations.

2. Registrations

The Quest Dual units conform to UL STD 474.

3. Specications

Unit: 4032270 105 Dual 4031490 155 Dual 4033060 205 Dual

Blower:

(Tested with duct collars

on)

257 CFM @ 0.0" WG

206 CFM @ 0.2" WG

146 CFM @ 0.4" WG

391 CFM @ 0.0" WG

363 CFM @ 0.2" WG

337 CFM @ 0.4" WG

526 CFM @ 0.0" WG

495 CFM @ 0.2" WG

458 CFM @ 0.4" WG

Power: 530 Watts @ 80°F and 60% RH 920 Watts @ 80°F and 60% RH 1525 Watts @ 80°F and 60% RH

Supply voltage: 110-120 VAC - 1 Phase - 60 Hz. 110-120 VAC - 1 Phase - 60 Hz. 110-120 VAC - 1 Phase - 60 Hz.

Current Draw: 4.9 Amps 8.0 Amps 13.2 Amps

Energy Factor: 4.2 L/kWh 3.5 2.7

Operating Temp: 56°F Min - 95°F Max 56°F Min - 95°F Max 56°F Min - 95°F Max

Sized For: 2,500 Square Foot Typical 3500 Square Foot Typical 5000 Square Foot Typical

Minimum Performance @ 80°F and 60% RH:

Water Removal:

Efciency:

105 Pints/Day

8.8 Pints/kWh

155 Pints/Day

7.3 Pints/kWh

205 Pints/Day

5.7 Pints/kWh

Air Filter: MERV-11 Size: 16" x 20" x 2" MERV-11 Size: 16" x 20" x 2" MERV-11 Size: 16" x 20" x 2"

Power Cord: 10’, 110-120 VAC, Ground 10’, 110-120 VAC, Ground 10’, 110-120 VAC, Ground

*This unit requires a dedicated 20A

circuit

Drain Connection: 3/4” Threaded NPT 3/4” Threaded NPT 3/4” Threaded NPT

Dimensions:

Width:

Height:

Length:

Weight:

Unit Shipping

20.25" 24"

21.75" 28.25"

38" 42"

140 lbs 160 lbs

Unit Shipping

20.25" 24"

21.75" 28.25"

38" 42"

140 lbs 160 lbs

Unit Shipping

20.25" 24"

21.75" 28.25"

38 " 42"

150 lbs 170 lbs

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4. Installation

4.1 Location

The Quest Dual can be installed in a variety of

locationstomeettheowner’sneeds;otherconsiderationsinclude:

1. Providing access to a 115 VAC power outlet

(10’ power cord is provided).

2.Locatingnearaoororothersuitabledrain

(8’ drain hose included).

3. Mount 4” above drain.

4. Do not install the Quest Dual with the exhaust of the unit within 1’ of a wall or obstruction. Do not place

the unit near open water.

4.1A No Ducting (g. 1)

The simplest installation is to place the Quest Dual with no ducting. To ensure optimal performance, the air

inletandtheoutletoftheunitmustbeatleast2’fromwallsandotherobstructionstoairow.Recirculation

of outlet air into inlet should be avoided as much as possible.

Input of

Humid Air

Out put of

Dehumidified Air

Front View

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4.1B Ducted Return and Supply (g. 2)

Dehumidicationperformancecanbemodiedbyaddinganreturnand/orsupplyducttocirculateair.

For optimal drying, use return duct to draw warm, moist air from near the ceiling.

4.1C Remote Area, w/ Ducted Supply (g. 3)

AsimpliedremoteinstallationmethodthanaboveusesductingbetweentheQuestDualdischargeandthe

humidroom;theQuestDualinletdrawsairfromtheroominwhichit’slocated.Thisworkswellifthereis

anadequateairowpathbetweenthetworooms;e.g.highdoorundercut,louvereddoororwallgrill.This

eliminates the need to remote mount the humidity control.

Input of

Humid Air

Front View

Output of Dehumidified Air

Front View

CONDITIONED SPACE

Input of

Humid Air

Output of Dehumidified Air

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WARNING! Before installing the dehumidier in the manner described in section

4.1D (Fig. 4), call the factory for specic instructions if backdraft devices (i.e. hot waters

heaters) are present in the space to be dehumidied.

4.1D In A Remote Area, Ducted Return Only (g. 4)

WhentheQuestDualislocatedinaroomseparatefromthemainareatobedehumidied,itmaybe

desirable to dehumidify and/or slightly pressurize that room. Pressurization assures that open combustion

devices do not backdraft. This can be prevented by installing a duct from the humid room to the Quest Dual

inletandbyallowingtheQuestDualtodischargedehumidiedairintotheroominwhichit’slocated.An

adequateairowpathmustexistbetweenthetworoomsforthismethodtoworkproperly.

WARNING!

4.2 Electrical Requirements

The Quest Dual plugs into a common grounded outlet on a 110-120 VAC 15-Amp circuit. Use of a ground

fault circuit interrupter (GFCI) protected circuit is recommended. The unit should not be used in areas prone

toooding.

CONDITIONED SPACE

Front View

Input of

Humid Air

Output of Dehumidified Air

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CAUTION! For proper drainage, the unit must be mounted so the drain outlet is at

least 4” above the oor drain, and must be fully supported under the base.

4.3 Condensate (Water) Removal

Condensate drains by gravity via the drain port. Use 3/4” male NPT PVC pipe. Route drain to drain. Install

a trap if possible. Take care when installing drain pipe to drain port. Use an adjustable wrench to secure the

drain port. An optional condensate pump kit (4028614) may be installed if a lift is required to dispose of the

condensate. To order call 1-800-533-7533.

Wheninstallingthedrainhosemakesurethefeetareextendedsuchthatthedehumidieris21/2”offthe

ground. Then coil the drain hose under itself or position a spacer to lift the hose 1” off the ground after the

hose has touched the ground. This procedure will create a trap that ensures your unit drains correctly. See

thediagrambelowforfurthervisualclarication.

5. Ducting

5.1 Supply Duct Kit (P/N 4028607)

A factory designed supply duct kit can be purchased to accept 10” ducting to both outlets of the Quest Dual.

Contact your dealer or call 1-800-533-7533 to order.

5.2 Return Duct Kit (P/N 4028610)

A factory designed return duct kit can be purchased to accept 12” ducting. Contact your dealer or call

1-800-533-7533 to order.

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6. Operation

6.1 Humidity Control Adjustment

The humidity control is an adjustable switch that closes when the relative humidity of the air in which it is

located rises to the dial set point. It opens when the RH drops 4 to 6% below the set point.

Approximate Humidity Levels Per Setting

“Dry” 20% to 30% Relative Humidity

“Normal” 50% Relative Humidity (Recommended)

“Humid” 80% to 90% Relative Humidity

Thedehumidierwillrununtiltherelativehumidity(RH)isreducedtothehumiditycontroldialsetting.

Quality humidity meters are available from the factory and are recommended to accurately monitor humidity

levels. Contact your dealer or call 1-800-533-7533 to order.

6.2 Blower (Fan) Switch

Turning the blower switch to “FAN ON” will cause the unit’s internal blower to run continuously, whether

the unit is dehumidifying or not. This function is desirable if the unit is used for air circulation.

Turning the blower switch to “FAN AUTO” will cause the unit’s internal blower to run only while the unit is

dehumidifying.

7. Maintenance

WARNING! NOTE: Do not operate the unit without the lter or with a less effective

lter. The heat exchange coils inside the unit could become clogged and require

disassembly to clean.

4031882

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7.1 Air Filter

TheQuestDualshipswithastandardMERV11efcientpleatedfabriclter.Thisshouldbechecked

everysixmonths.Thepleatedfabricltercangenerallybevacuumedcleanseveraltimesbeforeneeding

replacement.Operatingtheunitwithadirtylterwillreducedehumidiercapacityandefciencyandmay

causethecompressortocycleonandoffunnecessarily.Replacementlterscanbeorderedfromyourdealer

or by calling 1-800-533-7533.

8. Service

WARNING! Servicing the Quest Dual with its high pressure refrigerant system and

high voltage circuitry presents a health hazard which could result in death, serious

bodily injury, and/or property damage. Only qualied service people should service this

unit.

8.1 Technical Description

The Quest Dual uses a refrigeration system similar to an air conditioner’s to remove heat and moisture from

incoming air, and add heat to the air that is discharged. Hot, high pressure refrigerant gas is routed from

the compressor to the condenser coil. The refrigerant is cooled and condensed by giving up its heat to the

airthatisabouttobedischargedfromtheunit.Therefrigerantliquidthenpassesthroughalter/drierand

capillary tubing which cause the refrigerant pressure and temperature to drop. It next enters the evaporator

coil where it absorbs heat from the incoming air and evaporates.

Theevaporatoroperatesinaoodedcondition,whichmeansthatalltheevaporatortubescontain

liquidrefrigerantduringnormaloperation.Aoodedevaporatorshouldmaintainconstant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 any liquid refrigerant from reaching

the compressor. The compressor evacuates the cool refrigerant gas from the accumulator and compresses it

to a high pressure and temperature gas to repeat the process.

Quest Dual refrigeration system

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