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QUEST
335
Digital Controls
230V & 277V Units
Industry-Leading Efficiency
Patented M-CoRR
TM
Superior MERV-13 Air Filtration
Auto-Restart After Power Outages
Q U E S T C L I M A T E . C O M / ( 8 7 7 ) 4 2 0 - 1 3 3 0
Technology
INSTALLATION, OPERATION, AND
MAINTENANCE INSTRUCTIONS
#4046200
Model Number
Serial Number
Install Date
Sold By
CALIFORNIA
TITLE 24 COMPLIANT
Patents: thermastor.com/patents
208/230V
277V
/
#4046210
0 1 / 2 5 R E V E
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Table of Contents
Related Manuals for Therma-Stor Quest 335
Summary of Contents for Therma-Stor Quest 335
- Page 1 INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS QUEST 208/230V 277V #4046200 #4046210 Model Number Serial Number Digital Controls Install Date 230V & 277V Units Sold By Industry-Leading Efficiency Patented M-CoRR Technology Superior MERV-13 Air Filtration CALIFORNIA Auto-Restart After Power Outages TITLE 24 COMPLIANT Patents: thermastor.com/patents Q U E S T C L I M A T E .
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Page 2: Table Of Contents
QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS TABLE OF CONTENTS Safety Precautions ............2 7.4 Troubleshooting ............17 1. Intended Application ..........3 7.5 Refrigerant Charging ........19 2. Registrations ............... 3 7.6 Impeller Fan Replacement ....... 19 3. Specifications .............. 3 7.7 Compressor/Capacitor Replacement ..... -
Page 3: Safety Precautions
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 335 dehumidifier. READ AND SAVE THESE INSTRUCTIONS • The device is designed to be installed INDOORS IN A SPACE THAT IS PROTECTED FROM RAIN AND FLOODING. -
Page 4: Intended Application
In order to efficiently control humidity levels, the area in which the dehumidifier is to be operated must be free of water intrusion or excessive fresh (outside) air infiltration. Before installing the Quest 335 Dehumidifier, water intrusion and air infiltration problems should be addressed or noted in calculations. -
Page 5: Installation
INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 4. INSTALLATION 4.1 LOCATION The Quest 335 dehumidifier can be installed in a variety of locations to meet the owner’s needs as listed below. In all cases keep the following cautions in mind: •... -
Page 6: Hanging Diagram
QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 4.3 HANGING DIAGRAM QUEST 335 Threaded rods should be engaged no less than 2” into machine. 22.2” 16.6” 3/8” threaded rod 3/8” Jam Nuts Treated Air Intake Air CAUTION! For proper drainage, the unit must be mounted so the drain outlet is at least 6.75”... -
Page 7: Supply & Return Duct Kit
QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 4.5 QUEST 335 SUPPLY AND RETURN DUCT KIT (P/N 4042685) If factory duct kit accessory was purchased, follow instructions included with duct kit. 22.639” EXHAUST AIRFLOW INTAKE AIRFLOW 22.639” 575.04 23.990” 23.990”... -
Page 8: Hard-Wiring Instructions
INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 4.6 HARD-WIRING INSTRUCTIONS WARNING! Servicing the Quest 335 dehumidifier, 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 qualified service people should service this unit. - Page 9 QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS Wire harness Disconnect black wire power cord black wire Wire harness white wire Disconnect power cord white wire Disconnect power cord green wire from ground stud Disconnect POWER CORD BLACK wire from terminal Disconnect POWER CORD WHITE wire from terminal.
- Page 10 QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS Hardwire kit with jumper wires can be found in the pack part kit. Connect BLACK and WHITE jumper wires to terminal block as shown. Place GREEN jumper wire ring terminal on ground stud and use 11/32” driver to secure nut to stud.
- Page 11 QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS Replace access panel using T25 Torx driver to secure 7 screws. (877) 420-1330 QUESTCLIMATE.COM...
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Page 12: Control Options
QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 5. CONTROL OPTIONS The Quest 335 Dehumidifier can be controlled by its on board dehumidistat or with an external control using its low voltage terminal block. 5.1A ONBOARD DEHUMIDISTAT Off Mode: Fan, Compressor, Display and all LEDs are off... -
Page 13: B External Control Options
This must be activated when an external control is used to control RH. When Terminal Control is active, the internal RH sensor is disabled. 5.1B QUEST 335 EXTERNAL CONTROL OPTIONS Quest offers two external control options: Quest DEH 3000R and Honeywell Humidipro. -
Page 14: External Control
To access the air filter, remove the filter access panel from the end of the Quest 335 dehumidifier. The filter should be readily visible and can be removed by pulling it straight out of the Quest 335 dehumidifier. -
Page 15: Service
Quest 335 machines. Examples include but are not limited to breaking into the refrigerating circuit, opening of sealed components, and/or opening of ventilated enclosures. • Prior to beginning work on the Quest 335 machine, safety checks are necessary to ensure that the risk of ignition is minimized. •... -
Page 16: A Checks To Electrical Devices
» Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times Therma-Stor’s maintenance and service guidelines shall be followed. If in doubt, consult Therma-Stor’s technical department for assistance. »... -
Page 17: C Intrinsically Safe Components
Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere. The test apparatus shall be at the correct rating. • Replace components only with parts specified by Therma-Stor. Other parts may result in the ignition of refrigerant in the atmosphere from a leak. »... -
Page 18: E Refrigerant Removal & Evacuation
QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS E REFRIGERANT REMOVAL AND EVACUATION When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, for FLAMMABLE REFRIGERANTS it is important that best practice is followed since flammability is a consideration. - Page 19 QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 3. Loose connection in internal or control wiring. 4. Bad control or power board. 5. Defective control transformer. Neither fan nor compressor running. Dehumidification is being called for. No fan call. Unit unplugged or no power to outlet.
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Page 20: Refrigerant Charging
QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 4. Air filter dirty. 5. Low refrigerant charge. 6. Air leak (eg. loose cover or ducting leaks). Defective compressor. 8. Restrictive ducting. 9. Unit is in (Lo)w fan mode. 10. Evaporator temp sensor bad or unplugged. -
Page 21: B Replacing A Burnt Compressor
QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 8. Using capacitor or MFD setting on meter test between both capacitor terminals. Compare reading to capacitor spec on capacitor. 9. If the above test pass but the compressor does not work, the compressor has an internal mechanical defect and must be replaced. -
Page 22: C Replacing Compressor-Nonburn Out
7.8 REMOTE CONTROLS The Quest 335 dehumidifier is controlled by devices mounted on a panel that is remote from the unit. You may or may not have the devices listed below depending on the model of the remote hygrostat you purchased. -
Page 23: Error Codes
A warranty certificate has been enclosed with this unit; read it before any repair is initiated. If a warranty repair is required, call the factory first at 1-877-420-1330 for warranty claim authorization and technical assistance. 8. QUEST 335 ERROR CODES # NAME MACHINE DISPLAY... -
Page 24: Decommissioning
QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 9. DECOMMISSIONING Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its details. It is recommended good practice that all refrigerants are recovered safely. -
Page 25: Wiring Diagram
QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of all appropriate refrigerants including, when applicable, FLAMMABLE REFRIGERANTS. -
Page 26: Service Parts List
QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS SERVICE PARTS LIST FOR QUEST 335 Item Part No Qty Description Item Part No Qty Description 4041909 UI Control Board 4042467 Relay 4042009 Cover, UI, 24VAC 4042818 Relay (277v) 4042061 Sensor, Temp & RH, Digital... - Page 27 QUEST 335 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS (877) 420-1330 QUESTCLIMATE.COM...
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Page 28: Important Warranty Information
(but all warranty periods will be extended by the period of time, if any, that the Quest 335 Dehumidifier is out of service while awaiting covered warranty service).
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