Quest Engineering AG204 Operation And Maintenance Manual Download Page 1 | Manualshive

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Evolution

OPERATION AND MAINTENANCE MANUAL

QuestClimate.com

IQ SERIES

GROW ROOM HVAC

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Summary of Contents for AG204

Page 1: ...Evolution OPERATION AND MAINTENANCE MANUAL QuestClimate com IQ SERIES GROW ROOM HVAC ...

Page 2: ...out and Components 9 Dehumidifier Main Components 9 Control System 10 Dry Coolers Layout and Components 12 Sequence of Operation 14 Set Points 14 Ventilation 14 Space Heating 14 Air Conditioning and Dehumidification 14 Economiser Option Eco Coil 16 Basic Maintenance 17 Maintenance and Safety 17 Maintenance Key Points 17 Routine Maintenance Program 18 Specific Components Maintenance 19 Equipment Wa...

Page 3: ...ASKS Only qualified technicians should install operate maintain or service mechanical equipment such as this HVAC system Read this manual before performing any tasks to familiarize yourself with the equipment as well as with any potential hazards Always exercise caution Beware of electrical power and high electrical voltage Follow proper safety procedures lockout tagout and other respective proced...

Page 4: ...ctors WARNING Any work installation start up service maintenance repair etc on any mechanical equipment HVAC system dry cooler etc must be performed in accordance with manufacturer s recommendations as well as submittal documentation local Codes and Regulations and appropriate field practices Failure to do so could result in personal injury equipment damage or malfunction and will void equipment w...

Page 5: ...rk connections AC options etc are shown Refer to the submittal and other relevant documentation for your equipment specific options dimensions etc Pic C 1 Air Ductwork Connections Return Air RA ductwork options horizontal Supply Air SA ductwork options top bottom horizontal Outdoor Air OA not shown top side Piping Connections AC Water Cooled water glycol Condensate Drain Electrical control Economi...

Page 6: ...r Conditioning AC Connection Normally only one AC option water cooled is present with each dehumidifier o Water In Water Out on Pic C 1 indicate water cooled piping connection for dehumidifier equipped with Economizer Coil option Gas line If the dehumidifier is equipped with a gas heater for space heating purposes the gas line connection is to be brought to the gas heater directly NOTE Dehumidifie...

Page 7: ... OAFC Basic views of standard air conditioning option is shown below on Pic C 3 coolers NG models standard combinations of the dehumidifier and respective air conditioning option based on their capacities are shown in Table C 1 Table C 1 shows standard dehumidifier and cooler combination depending on number of factors dehumidifier may have different cooler provided with it refer to the dehumidifie...

Page 8: ...September 2020 7 Quest IQ Evolution OMM Pic C 3 ...

Page 9: ...d interior of the HVAC system to show External systems connections location direction space heating cooling circuits condensate Air filter locations quantity and size Additional Info warning caution stickers etc Wiring Diagrams attached to the interior side of the HVAC system depict HVAC system control and power wiring Remotely installed cooler would have its specific information provided in simil...

Page 10: ...r to submittal documentation Pic D 1 A below shows most available options some of which may not be present on your dehumidifier Pic D 1 A shows a single compressor dehumidifier layout Economizer coil option is shown separately on Pic D 1 B Dehumidifier Main Components Main Blower 1 is in the main blower compartment next to the Main Electric Panel 2 and Compressor Compartment 3 2 1 3 4 7 8 9 11 10 ...

Page 11: ...d within the Compressor Compartment 3 o Some larger compressors may have VFD variable frequency drive located in Main Electric Panel o Dehumidifier with water cooled air conditioning option equipped with dry cooler or connected to external water cooling source would have plate heat exchanger 16 as a part of compressor circuit Main Electric Panel contains Main Control Board 17 Operator Panel 18 and...

Page 12: ...witches fast reacting backup safety Depending on the dehumidifier option it could be equipped with some other sensors and safeties as well Sensors and safeties approximate location is shown on Pic D 4 RA Combo Sensor 21 measures temperature and humidity of the grow room air Return Air entering the dehumidifier It is located at the main filter rack If dehumidifier is equipped with OA opening option...

Page 13: ... general Dry Coolers Layout and Components The general layout of AC options water cooled is shown on Pic D 5 A below with the dry cooler NG V 0 as an example While layout and main components are similar for all applicable AC options there are some deviations number of fans coil sizes composition etc Refer to AC Options Basic Information chapter for additional information Cooling AC coil 31 where h...

Page 14: ... package box Pic D 6 below shows general layout of pump packages used for NG Z left and NG V right dry coolers Note that the package used with NG V coolers could be mounted onto the dry cooler directly standard or provided separately Pump 38 establishes glycol mixture circulation through the dry cooler and dehumidifier Expansion tank 39 compensates for temperature based glycol volume fluctuation T...

Page 15: ...ystem for Exhaust Purge purposes Space Heating When premise air temperature drops below the set point the HVAC system control system issues a call for Space Heating Mode and engages space heater electric heater hot water coil with valve etc by sending space heating signal respective to space heater control type on off variable 0 10VDC etc Air Conditioning and Dehumidification When premise air temp...

Page 16: ...s into the reheat coil Remainder of the hot gas goes into respective AC heat exchanger outdoor condenser coil for air cooled option or plate heat exchanger paired up with dry cooler or external chilled water sourse for water cooled option o Dry cooler fan is engaged only if hot gas is diverted to outdoor heatsink and compressor pressure is higher than pre set level see Outdoor Dry Cooler Operation...

Page 17: ...y cooler fans pump would stay engaged while fans are engaged regardless of the fans speed Economiser Option Eco Coil HVAC system equipped with eco coil and dry cooler can take an advantage of economiser option and use outdoor air to cool the premise without resorting to compressor operation Piping schematic shown on Pic E 1 includes Eco coil paired up with outdoor dry cooler When Air Conditioning ...

Page 18: ... the HVAC system and or performing any equipment maintenance work make sure that all moving parts are stopped and it is safe to perform required task Maintenance Key Points Here are some basic key maintenance considerations pertinent to all HVAC systems and their auxiliary systems HVAC system in mechanical room No chemicals should be stored in the same mechanical room where the HVAC system is inst...

Page 19: ...ed Check and tighten if required hose clamps and sensor mounts Inspect all airside coils dry cooler HVAC system coils evaporator etc for dirt cobweb build up etc clean as needed Check that the P trap is primed filled with water It is good practice to pour some water into the drain pan to ensure that the P trap is primed and operational Check the louvres and dampers as applicable for accumulation o...

Page 20: ...arning Hazardous chemicals Cleaning agents can be highly acidic or alkaline Handle all chemicals carefully and use appropriate personal protective equipment PPE Refer to the cleaning agent manufacturer s Materials Safety Data Sheet MSDS for safety and handling information Failure to follow all safety instructions could result in serious injury or death Warning Hazardous pressures Coils containing ...

Page 21: ...air bleeding valve etc Have each local low point of the system equipped with means to drain the fluid CAUTION Draining and re filling the dry cooler must be performed by trained personnel according to proper field practice and system layout Improper draining or re filling the system could lead to equipment damage malfunction premature tear and ware and may void equipment warranty CAUTION Ensuring ...

Page 22: ...arranty During the first 90 days from initial start up all parts and repairs related to factory defects or replacement parts are covered by the Quest manufacturer warranty All parts and labor requirements will either be handled by DASV technicians directly or managed and approved in advance by DASV through DASV authorized technicians Internet Connected Conditional One Year Repair Warranty If and o...

Page 23: ...s on which payment is in default 2 Parts that wear out due to normal usage such as air filters fuses and sensors are not covered by this warranty NOTE Refrigerant lost during the Initial 90 day Comprehensive or Internet Connected Conditional One Year Repair Warranty will be reimbursed in accordance to the current market price of refrigerant at the time of repair and upon discretion of Customer Sup...

Page 24: ... must be returned to the factory with transportation prepaid by the customer as a condition of these warranties Optional extended warranties are for parts only and subject to all the terms of the Two Year Parts Warranty 1 Optional Five Year Compressor Warranty Subject to the terms above Quest will provide a replacement compressor for up to 60 months from the date of the warranty activation 2 Optio...

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