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Quest IQ Compressor Wall OMM

 

22

 

 September 2020

 

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 

 piping 

 HVAC system etc.): 

 

Have each local high point of the system equipped with means to bleed the air (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 that the dry cooler and associated system(s) equipped with proper means of 

draining, creating draining and re-filling procedures as well as determining whether draining is warranted to 
protect the equipment is ou

tside of manufacturer’s scope and is a responsibility of installing contractor and local 

maintenance team. 
 
 

 

 

Содержание IQ Compressor Wall Series

Страница 1: ...IQ SERIES Compressor Wall OPERATION AND MAINTENANCE MANUAL QuestClimate com GROW ROOM HVAC...

Страница 2: ...ta 9 Layout and Components 10 HVAC system Main Components 10 Control System 13 Dry Cooler Layout and Components 14 Sequence of Operation 16 Set Points 16 Ventilation 16 Space Heating 16 Air Conditioni...

Страница 3: ...ly qualified technicians should install operate maintain or service mechanical equipment including current dehumidification system Read this manual before performing any tasks to familiarize yourself...

Страница 4: ...ractors 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...

Страница 5: ...and Options Standard AG series HVAC systems are semi custom while basic concept and layout is the same options and specific systems and components layout and location may vary from one HVAC system to...

Страница 6: ...th the HVAC system Packaged AC option is available for outdoor models only alternatively indoor and outdoor models could be fitted for separate remote AC option remote dry cooler or other external coo...

Страница 7: ...ly refer to submittal documentation Space Heating Gas Heater connection gas line If the HVAC system is equipped with a gas heater boiler gas furnace etc for space heating purposes the gas line connect...

Страница 8: ...ystem s submittal documentation for more details Standard dry coolers used with this model of HVAC system is NG V series composed of number of two coils two fans blocks based on required capacity of t...

Страница 9: ...nces Proper clearances should be maintained for adequate airflow and heat rejection Generally up to 36 side and 96 top clearances are required For more information on clearances as well as equipment d...

Страница 10: ...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 sti...

Страница 11: ...on a Quest product is technically possible If provided the EF assembly is located on the HVAC system s return air side Exhaust Air opening in outdoor installed HVAC system is equipped with louver s 76...

Страница 12: ...September 2020 11 Quest IQ Compressor Wall OMM 1 2 76 9 7 8 11a 21 24...

Страница 13: ...self contained refrigerant circuit within each module Each module also includes a Control Module 17 Common to the compressor modules is the Glycol Pump 16a that circulates water glycol to reject compr...

Страница 14: ...arious temperatures air water compressor etc b Combo sensor is used to monitor air temperature and humidity Compressor operation is monitored with pressure sensors Pic D 3 c Pressure Transducers only...

Страница 15: ...l applicable AC options there are some deviations number of fans composition etc Refer to AC Options Basic View Basic Information chapter for additional information Cooling AC coils 31 where heat from...

Страница 16: ...te side of the dry cooler Dry Coolers Pump Package Dry Coolers if equipped with such option would have a pump package box Pic D 6 below shows general layout of pump packages used for NG V model dry co...

Страница 17: ...tively If such option is used exhaust fan speed would be controlled like the main blower via adjustable pre set variable signals the exhaust fan speed may vary depending on scheduled ventilation mode...

Страница 18: ...shown on Pic E 2 Schematic shows single compressor module additional compressor modules schematic is the same and common to all compressor modules glycol cooling circuit Compressor operation below app...

Страница 19: ...ive call is satisfied the pump down solenoid valve closes once the compressor suction pressure reaches the pre set pressure the glycol pump and compressor stop Outdoor Dry Cooler Operation Respective...

Страница 20: ...ng 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 m...

Страница 21: ...ired 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 tra...

Страница 22: ...Warning 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 manufactu...

Страница 23: ...r 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...

Страница 24: ...Warranty 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 requir...

Страница 25: ...cts 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 Comp...

Страница 26: ...ts 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 Tw...

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