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Quest DRY 105, 155, and 205 

Installation, Operation and Maintenance Instructions

1-877-420-1330

14

www.QuestProtect.com

[email protected]

FOR HVAC INSTALLER AND OWNER

8.2 Technical Description 

The Quest Dry 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 (See Figure 15). 
Hot, high-pressure refrigerant gas is routed from the compressor to the condenser coil (See Figure 3). 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 filter/drier and capillary tubing which causes 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 flooded condition, which 

means that all the evaporator tubes contain liquid refrigerant during normal operation. A flooded evaporator should maintain 

nearly 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 to repeat the process. 

8.3 Troubleshooting 

Neither fan nor compressor running. Dehumidification is being called for. No fan call.
1. Unit unplugged or no power to outlet.
2. Humidity control set too high.
3. Loose connection in internal or control wiring.
4. Defective Compressor relay.
5. Defective control transformer.
Compressor is not running. Dehumidification is being called for. No fan call.
1.  Defective compressor run capacitor (Sec. 7.6).
2.  Loose connection in compressor circuit.
3.  Defective compressor overload (Sec. 7.6A).
4.  Defective compressor (Sec. 7.6).
5.  Defrost thermostat open.

Figure 15: Refrigeration System of Quest Dry 

Summary of Contents for Dry 105

Page 1: ...F 60 RH while using only 4 9 amps 115V The Quest Dry 155 provides water removal of 155 pints per day at 80 F 60 RH using 8 0 amps 115V The Quest Dry 205 is the largest capacity of the group This unit...

Page 2: ...ion 9 5 Controls 10 6 Optional Dehumidifier Ventilation System Controller 11 7 Maintenance 13 7 1 Standard Air Filter 13 7 2 High Efficiency Air Filter 13 7 3 Impeller Fan Oiling 13 7 4 Optional Fresh...

Page 3: ...s 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 ope...

Page 4: ...VAC 1 Phase 60 Hz Current Draw 4 9 Amps 8 0 Amps 13 2 Amps Energy Factor 4 2 3 5 2 7 Operating Temp 56 F Min 95 F Max 56 F Min 95 F Max 56 F Min 95 F Max Minimum Performance 80 F and 60 RH Water Remo...

Page 5: ...nded 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...

Page 6: ...rt 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...

Page 7: ...ming instructions for the ventilation timer Advantages of this form of ventilation include 1 Outside air is filtered before entering the building 2 Outside air will be dehumidified before entering if...

Page 8: ...e of the tee to the air supply of the existing HVAC system A backdraft damper is required in the duct between the 10 tee and the central supply duct to prevent air from being discharged into the basem...

Page 9: ...ed in central open area of the structure DO NOT locate the return in a bathroom or a kitchen The supply of the Quest Dry should be located in the remote areas of the structure By ducting this way the...

Page 10: ...contact between yellow and green or brown wires To power an HVAC accessory connect the accessory to the white or red wire and the yellow wire FOR HVAC INSTALLER ONLY P N 4027370 with remote P N 40285...

Page 11: ...com TS 673 06 11 WARNING Allowing yellow wire to contact red or white wire will destroy the transformer Dehumidifier on Connect yellow and blue wires Fan only on Connect yellow and green or brown wire...

Page 12: ...del DEH 3000 DEH 3000R remote Operating Voltage 24 VAC Max Current DMP COMP FAN 1 AMP each Humidity Range Accuracy 10 95 RH 5 Auxillary Relay Capacity 5 Amps 24VAC Temp Range Accuracy 30 90 F 2 Size 4...

Page 13: ...available for the Quest Dry This filter is rated as 90 95 efficient by the ASHRAE Dust Spot test method 52 76 The high efficiency pleated microglass paper filter should be used in conjunction with th...

Page 14: ...aporator tubes contain liquid refrigerant during normal operation A flooded evaporator should maintain nearly constant pressure and temperature across the entire coil from inlet to outlet The mixture...

Page 15: ...humidification is being called for 1 Defrost thermostat loose or defective Sec 7 8 2 Low refrigerant charge 3 Dirty air filter s or air flow restricted 4 Excessively restrictive ducting connected to u...

Page 16: ...sisting of the motor and impeller fan If defective the complete assembly must be replaced 1 Unplug the power cord 2 Remove the cabinet access panel 3 Remove the screw attaching the impeller fan suppor...

Page 17: ...otors and cause failures The following procedure is effective only if the system is monitored after replacing the compressor to insure that the clean up was complete 1 This procedure assumes that the...

Page 18: ...Timer The ventilation timer controls the impeller fan and the motorized fresh air damper When the ventilation timer is activated the Quest Dry will circulate the indoor air and bring in fresh air fro...

Page 19: ...condensate pump kit is available from the factory for use with the Quest Dry Condensate is automatically pumped to a remote location when the water level in the pump s reservoir rises to close the flo...

Page 20: ...3 4 4032178A 1 2 3 4 BLK 3 WHT 6 A B B A BLK 7 COM COM 24V 24VAC COM BLU YEL GRN RED LINE NEUTRAL CUSTOMER SUPPLIED CONTROL WIRING N O WHT 4 UNIT E BOX 1 59 1413 WHT 4 BLK 1 8 2 3 2 2 2 3 7 5 COM COM...

Page 21: ...lacement Kit 7 4032224 1 Dry 155 Dry 205 Compressor Replacement Kit 4029568 1 Dry 105 Compressor Overload NOT SHOWN 4029714 1 Dry 155 Compressor Overload NOT SHOWN 4031574 1 Dry 205 Compressor Overloa...

Page 22: ...Humidity Fan 4024125 1 Control Panel Assembly Ventilation Timer Humidity 4023660 1 Controller Humidity 4023672 1 Duct Damper 6 Diameter Electrically Actuated not shown 4024153 1 Cover for Items 28 29...

Page 23: ...he door in between the foam installation and the metal side Push down on the plastic door latch and swing door shut Once the door is shut release the door latch Collar Install Remove the 2 round ducts...

Page 24: ...le means 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 u...

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