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1-877-420-1330

 

Quest 105/155/205/225 Dual 

Installation, Operation and Maintenance Instructions

7

www.QuestHydro.com

[email protected]

4.5 Ducting

4.5A 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 1-877-420-1330 to order or go to www.questhydro.com/product-category/accessories.

 

4.5B Return Duct Kit (P/N 4028610)

A factory designed return duct kit can be purchased to accept 12” ducting. Contact your dealer or call 1-877-420-1330 

to order or go to www.questhydro.com/product-category/accessories.

  

5. Control Options

The Quest Dual Dehumidifier can be controlled by its on board dehumidistat or with an external control using its low 

voltage terminal block.

5.1 On board dehumidistat

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 dehumidifier will run until the relative humidity (RH) is reduced to the humidity control dial setting.

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Summary of Contents for 105 Dual

Page 1: ...ructions 4201 Lien Rd Madison WI 53704 Toll Free 1 877 420 1330 www QuestHydro com info QuestHydro com Read and Save These Instructions Specifications subject to change without notice 1 Water Removal Rates Pints Day 80 F 60 AHAM Dehumidifier Pints Removed Gallons Liters 105 Dual 105 13 1 49 7 155 Dual 155 19 4 73 3 205 Dual 205 25 6 97 0 225 Dual 225 28 1 106 5 PATENTS D570 988 8 069 681 9 052 132...

Page 2: ... 2A Deh 3000R 8 5 2B Honeywell Remote Humidistat 9 6 Maintenance 9 6 1 Standard Air Filter 9 6 2 Impeller Fan Oiling 9 7 Service 9 7 1 Warranty 9 7 2 Technical description 10 7 3 Troubleshooting 10 7 4 Refrigerant Charging 12 7 5 Impeller Fan Replacement 12 7 6 Compressor Capacitor Replacement 12 7 6A Checking Compressor Motor Circuits 12 7 6B Replacing Burned Out Compressor 13 7 6C Replacing Comp...

Page 3: ...t 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 Never operate a unit with a damaged power cord If the power cord is damaged it must be...

Page 4: ...pply voltage 110 120 VAC 1 Phase 60 Hz 110 120 VAC 1 Phase 60 Hz 110 120 VAC 1 Phase 60 Hz 208 240 VAC 1 Phase 60 Hz Current Draw Amps 4 9 8 0 13 2 6 9 Energy Factor L kWh 4 2 3 5 2 7 2 9 Operating Temp 56 F Min 95 F Max 56 F Min 95 F Max 56 F Min 95 F Max 56 F Min 95 F Max Water Removal Pints Day Efficiency Pints kWh 105 8 8 155 7 3 205 5 7 225 6 1 Air Filter MERV 11 Size 16 x 20 x 2 Size 16 x 20...

Page 5: ...ctural building members without vibration absorbers or unwanted noise may result The Quest Dual Dehumidifier may be suspended with steel hanger straps or a suitable alternative from structural members unit must be supported from underneath Don t hang from sides or ends Remember to place a drain pan under the unit if it is suspended above a finished area or above an area where water leakage could c...

Page 6: ...ble wrench to secure the drain port An optional condensate pump kit may be installed if a lift is required to dispose of the condensate The condensate pump kit can be ordered directly from the factory See the optional parts list for information on the kit When installing the drain hose make sure the feet are extended such that the dehumidifier is 2 1 2 off the ground Then coil the drain hose under...

Page 7: ...call 1 877 420 1330 to order or go to www questhydro com product category accessories 5 Control Options The Quest Dual Dehumidifier can be controlled by its on board dehumidistat or with an external control using its low voltage terminal block 5 1 On board dehumidistat The humidity control is an adjustable switch that closes when the relative humidity of the air in which it is located rises to the...

Page 8: ...To turn the dehumidifier on make contact between 24V and DEHU terminals or turn the dehumidistat clockwise towards drier To turn the fan on make contact between 24V and FAN terminals To power a 24V HVAC accessory connect the accessory to the COM terminal and the 24V terminal NOTE 18 ga wire needed between the Quest Dual dehumidifier and the external control Quest offers two external control option...

Page 9: ...iency and may cause the compressor to cycle off and on unnecessarily on the defrost control To access the air filter remove the filter access panel from the end of the Quest Dual Dehumidifier The filter should be readily visible and can be removed by pulling it straight out of the Quest Dual Dehumidifier We recommend changing the filter at least with every grow cycle 6 2 Impeller Fan Oiling The im...

Page 10: ...gerant 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 to repeat the process 7 3 Troubleshooting Neither fan nor compressor running Dehumidification is being called for No fan call 1 Unit unp...

Page 11: ... cover or ducting leaks 8 Defective compressor 9 Restrictive ducting 10 Optional Condensate Pump Safety Switch open Unit Test to determine problem 1 Detach field control wiring connections from main unit 2 Connect the 24V and FAN pigtails from the main unit together only the impeller fan should run Disconnect the wires 3 Connect the 24V and DEHU pigtails from the main unit together the compressor ...

Page 12: ...ssor top 2 Plug in the unit and turn the humidity control to ON Check for volts from compressor terminal R to overload terminal 3 using an AC voltmeter If correct voltage is present go to step 3 If no voltage there may be a loose connection in the compressor circuit Test each component for continuity See the appropriate section if a defect is suspected 3 Unplug the unit and then disconnect the red...

Page 13: ...em Several changes of the liquid and suction filter driers will probably be necessary to cleanse the system 5 Correct the system fault that caused the burn out Consult the factory for advice 6 Install the replacement compressor with a new capacitor and an oversized liquid line filter In a running burn out install an oversized suction line filter drier between the accumulator and compressor Thoroug...

Page 14: ...e set to AUTO The slide switch in the upper right corner of the Quest Dual Dehumidifier must be set to RUN Also check the programs on the timer to be sure that the timer is calling for ventilation at the correct times If the timer fails to operate or operates erratically reset the timer see section 4 5 of this manual 7 8 Defrost Thermostat The defrost thermostat is attached to the refrigerant suct...

Page 15: ... rises to close the float switch The pump also contains a safety float switch The white leads from this switch extend from beneath the pump cover This switch should be installed in series with the field wire that connects the blue 5 lead from the Quest Dual Dehumidifier to the blue 5 lead on the control panel If the pump fails this switch opens the compressor control circuit and stops water produc...

Page 16: ...BLK 21 BLK 20 BLK 8 20 BLK 8 YEL 11 YEL 11 24 BLU 25 24V YEL 9 RED 14 15 RED 15 16 COM DEHU FAN DAMPER COMMON DEHUMIDISTAT WHT 22 24V BLU 2 BLU 19 BLU 23 GRN 17 GRN 12 BLU YEL 6 COMP RELAY BLOWER RELAY 3A BREAKER COMP RELAY RELAY RELAY COIL BLOWER RELAY COIL COIL COMP BLOWER DEFROST SWITCH XFMR LINE RED 5 RED 5 BLU 2 RED 14 RED 16 RED 13 GRN GRN 10 GRN 4 4038112 BLK 1 BRN 3 BRN BLK 7 BLK BLOWER CA...

Page 17: ... Dual Compressor Overload NOT SHOWN Item Part No Qty Description 8 4036492 1 225 Dual Impeller 9 4033032 05 1 225 Dual Capacitor Run 45 MFD 370V 10 4035235 02 1 225 Dual Capacitor Fan 5 MFD 370V Dry 11 4020924 1 Relay SPDT 24V 15A 12 4022484 1 Relay SPST 24V 30A 13 4036398 1 XFMR 240V 50 60Hz 24V 40VA 14 4036559 1 Circuit Breaker NOT SHOWN 2 3 4 5 6 7 8 9 10 11 12 13 1 PART NO QTY DESCRIPTION 4020...

Page 18: ...s The end user is responsible for normal care This warranty 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 Quest Dual Dehumidifier Dehumidifier pa...

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