Quest Engineering 155 Installation, Operation And Maintenance Instructions

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QUEST

155

Digital Controls

M-CoRR Technology

Industry-Leading Efficiency

Superior MERV-13 Air Filtration

Integrated Lift and Hang Points

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

INSTALLATION, OPERATION, AND

MAINTENANCE, INSTRUCTIONS

4046120

Model Number

Serial Number

Install Date

Sold By

CALIFORNIA

TITLE 24 COMPLIANT

Patents: thermastor.com/patents

0 3 / 2 5 R E V C

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Summary of Contents for Quest Engineering 155

Page 1 INSTALLATION, OPERATION, AND MAINTENANCE, INSTRUCTIONS QUEST 4046120 Model Number Serial Number Install Date Digital Controls Sold By M-CoRR Technology Industry-Leading Efficiency Superior MERV-13 Air Filtration CALIFORNIA Integrated Lift and Hang Points TITLE 24 COMPLIANT Patents: thermastor.com/patents 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 0 3 / 2 5 R E V C...
Page 2 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS TABLE OF CONTENTS Safety Precautions ............2 7.4 Troubleshooting ............22 1. Intended Application ..........3 7.5 Refrigerant Charging ........23 2. Registrations ............... 3 7.6 Impeller Fan Replacement ....... 24 3. Specifications .............. 3 7.7 Compressor/Capacitor Replacement .....
Page 3 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 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 dehumidifier. READ AND SAVE THESE INSTRUCTIONS »...
Page 4 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 155 dehumidifier, water intrusion and air infiltration problems should be addressed or noted in calculations.
Page 5 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 4. INSTALLATION 4.1 LOCATION The Quest 155 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 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS CAUTION! For proper drainage, the unit must be mounted so the drain outlet is at least 6.75” above the floor drain, and must be fully supported under the base. 4.3 CONDENSATE WATER REMOVAL Condensate drains by gravity via the drain port.
Page 7 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 4.4 HANGING DIAGRAM QUEST 155 16.6” 19.4” threaded rod 3/8” 3/8” Jam Nuts Treated Air 1.5”- 2.5” Intake Air 3/4” drain port Parts Needed: 4 pieces 3/8” threaded rod (not included) Threaded rods should be engaged no less than 1.5”...
Page 8 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 4.5 DUCTING Return and supply duct collars are optional accessories for the Quest 155 and not included with the unit. CAUTION! Do not connect with a static pressure greater than or equal to +1.0 WG. Contact technical support at (877) 420-1330 for additional details.
Page 9 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS QUEST 155 SUPPLY AND RETURN DUCT KIT (P/N 4043235) If factory duct kit accessory was purchased, follow instructions included with duct kit. Dimensions below are shown in inches and [millimeters]. If owner chooses to have a licensed HVAC contractor fabricate a duct kit, please follow the drawing below for safe zones for self tapping screws.
Page 10 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS DUCTING TO HVAC OPTIONS A. HVAC SUPPLY TO SUPPLY CAUTION! To avoid the dehumidifier cycling in and out of DEFROST, it is recommended that the leaving air temperature of the A/C coil is not below 55°F. Also, this install is not recommended for climates where the heating system will run during the spring and fall times of year, as this could diminish the water removal capability of the dehumidifier.
Page 11 Create a separate return for the Quest 155 Dehumidifierin a central area of the building. Installing the supply air from the Quest 155 Dehumidifier to the return of the HVAC system requires the HVAC fan to run when the Quest Dehumidifier is operating.
Page 12 Proper air distribution is important for optimal performance of the dehumidifier. Install a 6” insulated duct from outside, teeing into the 14” return duct of the Quest 155 Dehumidifier to provide outdoor air ventilation (optional).
Page 13 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 4.6 HARD-WIRING INSTRUCTIONS WARNING! Servicing the Quest 155 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 14 QUEST 155 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 15 QUEST 155 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 16 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 5. CONTROL OPTIONS The Quest 155 dehumidifier can be controlled by its on board dehumidistat or with an external control using its low voltage terminal block. 5.1A QUEST 155 ONBOARD DEHUMIDISTAT Off Mode: Fan, Compressor, Display and all LEDs are off...
Page 17 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 155 EXTERNAL CONTROL OPTIONS Quest offers two external control options: Quest DEH 3000R and Honeywell Humidipro.
Page 18 Filter non-compliance invalidates the product warranty. 6.1 STANDARD AIR FILTER The Quest 155 dehumidifier ships with a standard MERV-13 efficient pleated fabric filter. This filter should be checked every six months. Operating the unit with a dirty filter will reduce dehumidifier capacity and efficiency and may cause the compressor to cycle off and on unnecessarily on the defrost control.
Page 19 Quest 155 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 155 machine, safety checks are necessary to ensure that the risk of ignition is minimized.
Page 20 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
Page 21 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS » Ensure that the equipment is mounted securely. » Ensure that seals or sealing materials have not degraded to the point that they no longer serve the purpose of preventing the ingress of flammable atmospheres »...
Page 22 QUEST 155 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 23 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 7.4 TROUBLESHOOTING Unit Test to determine problem: Detach any exterior control wiring by removing terminal block but jump both FLOAT terminals together. 2. Reinstall terminal block into the control. 3. Plug unit in to known good power outlet. 110 -120 volts.
Page 24 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS Unit removes some water, but not as much as expected. Air temperature and/or humidity have dropped. 2. Humidity meter and or thermometer used are out of calibration. 3. Unit has entered defrost cycle.
Page 25 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 7.6 IMPELLER FAN REPLACEMENT The motorized impeller fan is a unitary assembly consisting of the motor and impeller fan. If defective, the complete assembly must be replaced. Unplug the power cord. 2. Remove the access panel, and top panel.
Page 26 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS 7.7B REPLACING A BURNT COMPRESSOR The refrigerant and oil mixture in a compressor is chemically very stable under normal operating conditions. However, when an electrical short occurs in the compressor motor, the resulting high temperature arc causes a portion of the refrigerant oil mixture to break down into carbonaceous sludge, a very corrosive acid, and water.
Page 27 7.8 REMOTE CONTROLS The Quest 155 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 28 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 155 ERROR CODES # NAME MACHINE DISPLAY...
Page 29 QUEST 155 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 30 Only electric heating to the compressor body shall be employed to accelerate this process. When oil is drained from a system, it shall be carried out safely. WIRING DIAGRAM OF THE QUEST 155 DEHUMIDIFIER (877) 420-1330 QUESTCLIMATE.COM...
Page 31 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS SERVICE PARTS LIST FOR QUEST 155 Item Part No Qty Description Item Part No Description 4042787 MERV-13 Air Filter 4042467 Relay, ELMCH,SPST, 100/120, 25A 18” 4026221 Leveling Foot 4034716-03 1 Thermistor Probe*...
Page 32 QUEST 155 INSTALL ATION, OPERATION, AND MAINTENANCE INSTRUCTIONS (877) 420-1330 QUESTCLIMATE.COM...
Page 33 (but all warranty periods will be extended by the period of time, if any, that the Quest 155 Dehumidifier is out of service while awaiting covered warranty service).

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