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Summary of Contents for Quest Engineering IQ Evolution Series
- Page 1 IQ SERIES GROW ROOM HVAC Evolution OPERATION AND MAINTENANCE MANUAL Q u e s t C l i m a t e . c o m...
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Page 2: Table Of Contents
Table of Content General Information ......................2 Document Scope ............................2 Contact Us ..............................2 Operating Safety (Warnings, Cautions, and Notes) ................... 2 Basic Information ............................4 Air Conditioning Option – Dry Coolers (OAFC)..................6 Equipment Specific Data ..........................8 Layout and Components ...................... -
Page 3: General Information
General Information Document Scope This manual provides operation and maintenance information about the Quest IQ Evolution Series HVAC system and its operation. Additional information regarding installation, maintenance, and equipment commissioning and auxiliary devices (dry cooler, communication interfaces, etc.) is provided with the HVAC system and can also be obtained from the manufacturer. - Page 4 The following warnings, cautions, and notes appear throughout this manual and referenced documentation whenever special care must be taken to avoid potential hazards that could result in equipment malfunction or damage, personal injury, or death. Note CAUTION WARNING Indicates a situation that could Indicates a potentially hazardous Indicates a potentially hazardous result in equipment damage or...
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Page 5: Basic Information
Basic Information HVAC system View and Options Standard Quest IQ Evolution Series HVAC system general view and options * are shown on Pic.C.1. Air/Ductwork Connections • Return Air (RA) ductwork options - horizontal. • Supply Air (SA) ductwork options – top, bottom, horizontal*. - Page 6 Options: • Indoor models (see Dehumidifier Optional Arrangement below for more details): Two-compressor option, 4 to 32 ton cooling capacity (appx.) - models AG204 to AG232; 4-compressor design pending, 20 to 32 tons – models AG220, AG224, AG228, AG232 - future •...
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Page 7: Air Conditioning Option - Dry Coolers (Oafc)
Dehumidifier Optional Arrangement. Two-Compressor Arrangement Standard Quest IQ Evolution Series HVAC system normally has two compressors. • Two-Compressor (or “Double-Decker”) dehumidifier (shown on Pic. C.2). It is composed of two identical single-compressor dehumidifiers, one installed on top of another and controlled as a single dehumidifier (each deck is equipped with one compressor/refrigeration circuit). - Page 8 Pic. C.3 September 2020 Quest IQ Evolution OMM...
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Page 9: Equipment Specific Data
Equipment Specific Data Specific information for individual HVAC systems is provided in the following methods: Nameplate (Pic. C.5): the manufacturer tag attached to the front of the system includes the system’s most critical data: General data including: Serial number HVAC system model (nomenclature) Design room conditions (air temperature and humidity) -
Page 10: Layout And Components
Layout and Components The general layout and components’ location is the same for all dehumidifiers of current type, however some may vary, based on the dehumidifier’s specific options – refer to submittal documentation. Pic. D.1-A below shows most available options, some of which may not be present on your dehumidifier: •... -
Page 11: Control System
• Outdoor Air (OA) Intake option (opening, damper and filter (4)) is available, although very rarely used. • Refrigeration coils - Evaporator (7) and Reheat (internal condenser) (8) - are located directly downstream of the Main Filter Rack (9). Evaporator Bypass Damper (10) is located next to the evaporator coil. It helps to control compressor suction pressure by adjusting the amount of air, bypassing the evaporator. - Page 12 Temperature Sensors (Pic. D.2): a) Temperature sensors (thermistors) are used to monitor various temperatures (air, water, compressor, etc.); Combo sensor is used to monitor air temperature and humidity. Pic. D.2 Compressor operation is monitored with pressure sensors (Pic. D.3): Pressure Transducers (as main operational control and safety) and Pressure Switches (fast-reacting backup safety).
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Page 13: Dry Coolers Layout And Components
As an option, the combo sensor (instead of regular thermistor) can be installed at the OA intake to measure both the temperature and humidity of the outdoor air. • ET (EvapT) Temperature Sensor (23) measures the temperature of air leaving evaporator coil. It’s located directly downstream of the evaporator. - Page 14 Dry Cooler Serving Multiple Dehumidifiers. In some cases, group of dehumidifiers could be served by one single large dry cooler. Such dry cooler would normally be comprised of multiple NG-V-12 blocks (shown on Pic. D.5-B, Fig.1), all connected together and operated as one single dry cooler.
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Page 15: Sequence Of Operation
Sequence of Operation The HVAC system’s ventilation system establishes the required airflow through the HVAC system. The control system compares air temperature and humidity to their desired values (set points) and proceeds to dehumidify, cool or heat the recirculating air. Set Points The control system is constantly adjusting HVAC system operation to achieve and maintain said parameters within couple degrees/percent of the set point. - Page 16 Compressor Circuit Operation Piping schematic for compressor circuit is shown on Pic. E.1. Pic. E.1 When a demand requires the compressor to operate, the following sequence occurs: Once blower operation, related safeties and timers are confirmed by the control system, the pump down solenoid valve opens and once pressure stabilizes, the compressor starts.
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Page 17: Economiser Option (Eco-Coil)
Outdoor Dry Cooler Operation. Respective signal(s) are sent by control system to engage EC-type fans via a variable 0-10VDC signal (proportional to the compressor head pressure level). Refer to the wiring diagram if/when needed. If the dry cooler is equipped with the built-in pump package (to establish cooling fluid flow between HVAC system and the dry cooler or to serve as additional/booster pump), the said pump is also engaged along with dry cooler fans –... -
Page 18: Basic Maintenance
Basic Maintenance Although equipment is built for minimal service downtime, periodic preventative maintenance is required to ensure maximum reliability, safety, and operating efficiency. WARNING! To ensure equipment longevity and proper and efficient operation, the HVAC system and its auxiliary systems and devices (e.g. dry cooler) must be maintained properly and regularly. It is recommended to create a facility-specific Routine Maintenance Program. -
Page 19: Routine Maintenance Program
Routine Maintenance Program Creating facility-specific routine maintenance program and following it is vital to equipment longevity and efficient operation. The suggested general maintenance operations and their frequency/intervals, listed in the table M-1 below, can be used to create such a program. For more detailed maintenance recommendations related to specific components, refer to the respective component manufacturer’s manual. -
Page 20: Specific Components Maintenance
Specific Components Maintenance Actual maintenance plan may vary from installation to installation, yet there are several key components from maintenance prospective. If needed, contact respective component manufacturer for additional maintenance information. Filters • Ensure air filters are clean. Dirty air filters will negatively affect HVAC system performance and lifetime •... - Page 21 Dry Cooler Maintenance Quest equipment is intended to provide the ability to perform sensible cooling year-round. As such, systems are sold with appropriate glycol concentrations to prevent freezing/burst hazards. Though dry cooler itself is normally equipped with means to be drained properly/fully, it is recommended to have same means in place for entire system (dry cooler –...
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Page 22: Equipment Warranty
Equipment Warranty General Policy All Quest service and warranty work is managed exclusively by Dehumidified Air Services (DASV). All warranties apply to the original equipment owner and are not transferable. All warranty inquiries should be made through either Quest Customer Account Management or Dehumidified Air Services. Quest Customer Account Management: Phone: 1-833-327-2447 Email: Service@QuestClimate.com... - Page 23 applicability. Parts shipping and handling costs (to and from the factory) are not covered outside of the Initial 90‐ day Warranty. Replacement Part Warranty If a replacement part provided by Quest under this warranty fails due to a material defect prior to the end of the Two-Year Parts Warranty (or the end of the extended warranty period if applicable), whichever comes first, Quest will provide a new or rebuilt part F.O.B.
- Page 24 the warranties described above. Quest expressly disclaims and excludes any liability for consequential or incidental damage for breach of any express or implied warranty. Where a jurisdiction does not allow limitations or exclusions in a warranty, the foregoing limitations and exclusions shall not apply to the extent of the legislation, however, in such case the balance of the above warranty shall remain in full force and effect.
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