Quest Engineering IQ Compressor Wall Series User manual

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

Table of Content
General Information ..............................................................................................................2
Document Scope........................................................................................................................................2
Contact Us..................................................................................................................................................2
Operating Safety (Warnings, Cautions, and Notes)...................................................................................2
Basic Information ..................................................................................................................4
HVAC system View and Options ................................................................................................................4
Air Conditioning Options –Outdoor Air Dry coolers (OAFC).....................................................................7
Equipment Specific Data............................................................................................................................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 Conditioning and Dehumidification ...................................................................................................16
Economiser Option (Eco-Coil)..................................................................................................................18
Basic Maintenance ..............................................................................................................19
Maintenance and Safety..........................................................................................................................19
Maintenance Key Points..........................................................................................................................19
Routine Maintenance Program ...............................................................................................................20
Specific Components Maintenance.........................................................................................................21
Dry Cooler Maintenance..........................................................................................................................22
Equipment Warranty ...........................................................................................................23

Quest IQ Compressor Wall OMM 2September 2020
General Information
Document Scope
This manual provides operation and maintenance information about the Quest IQ Compressor Wall 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.
Contact Us
Quest
QuestClimate.com
For immediate assistance:
Phone: [phone] (Canada), 1-877-420-1330 (USA)
For unit commissioning, miscellaneous inquirieis, parts requests and warranty:
Email: [e-mail]
Operating Safety (Warnings, Cautions, and Notes)
FOR YOUR SAFETY: READ BEFORE PERFORMING ANY OPERATIONS, MAINTENANCE OR SERVICE TASKS!
Only qualified technicians should install, operate, maintain or service mechanical equipment
including current dehumidification 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 procedures
•Failure to follow safety procedures can result in serious injury or death
Beware of moving parts and hot surfaces!
•Make sure to stop all moving parts (fans, blowers, etc.) before accessing the equipment’s
internal compartments
•Be aware of hot surfaces (hot refrigeration, space heating pipes, coils, heaters, etc.)
Beware of high pressures and chemicals!
•HVAC systems, equipped with compressors, contain refrigerant under high pressure; oil is
also contained in the compressor and refrigeration circuit(s)
•Some HVAC systems may also contain other liquids such as glycol mixtures

September 2020 3Quest IQ Compressor Wall OMM
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.
WARNING
Indicates a potentially hazardous
situation which could result in
serious injury or death if handled
improperly.
CAUTION
Indicates a potentially hazardous
situation which could result in
moderate injury or equipment
damage if handled improperly.
Note
Indicates a situation that could
result in equipment damage or
improper/ineffective operation if
handled improperly.
Attention: Installation and Service Contractors
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 warranty. Only qualified and properly trained individuals should perform tasks on this equipment.
Attention: Maintenance Team
CAUTION. To ensure equipment longevity and proper and efficient operation, the HVAC system and its
auxiliary systems and devices (e.g. dry cooler) should be maintained properly and regularly. Failure to do so could
negatively affect premise comfort levels and people’s health. It could also lead to equipment damage,
malfunction, premature tear and ware and may void equipment warranty.

Quest IQ Compressor Wall OMM 4September 2020
Basic Information
HVAC system View 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 another. One of the
typical HVAC system arrangement is shown on Pic.C.1.
Pic. C.1

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HVAC system Options
•Indoor or outdoor installation.
oNote: Pic. C.1. shows outdoor model.
•Capacity (number of 2-stage compressor pods or modules) –(see HVAC system Optional Arrangement below
for more details):
o2-compressor modules AG-012 & AG-016
o3-compressor modules AG-020
o4-compressor modules AG-024 & AG-030
o6-compressor modules AG-036 & AG-045
o9-compressor modules AG-055
•Airflow/ductwork connection *. Pic. C.1 shows some options only; each option location availability depends on
the HVAC system installation (indoor or outdoor) and other options:
oReturn Air (RA) ductwork connection - top, bottom, end, sides.
oSupply Air (SA) ductwork connection –top, bottom, sides.
•Optional Space Heating - hot water coil, electric or gas heater **.
•Optional Economizer Coil –for additional cooling.
•Air Conditioning (AC)* –external water cooling or dry cooler (packaged or separate).
oNote: Pic. C.1 shows outdoor model with “packaged” dry cooler (mounted with 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 cooling media
source.
* Some available options (tonnage, ductwork connections, AC options etc.) are shown. Refer to the submittal
and other relevant documentation for your HVAC system’s options.
** For specific details on space heating (hot water, gas, electric) option, refer to the submittal and other
documentation:
•Gas-fired duct heater can be installed internally (fitted inside the HVAC system at the factory).
•Electric heater or hot water coil, depending on capacity, model, size, etc., mounted internally. Refer to your system’s
submittal documentation.
Attention! Equipment Clearances and Dimensions!
CAUTION! For equipment proper operation, maintenance and service, respective clearances should be
maintained. Generally, 30” clearances to the equipment must be kept for the maintenance and service purposes.
For the specific required clearances information, as well as HVAC system overall dimensions, distances to pipe
connections, duct connections etc., refer to the submittal documentation.

Quest IQ Compressor Wall OMM 6September 2020
HVAC system External Systems Connection
Pic. C.1 shows provisions for external systems connections, including ductwork, electric power and control wires
and various piping connections.
Except for the condensate, all other piping systems are optional and may not be present in each HVAC
system
•Condensate Drain Line –bottom, side (through the HVAC system base).
•Air Conditioning (AC) Connection.
oPackaged AC option (outdoor HVAC system with outdoor dry cooler (OAFC) incorporated with the
HVAC system), does not require piping connection to external AC system or device.
Pic 1.C. shows packaged outdoor model with OAFC mounted at the end of the HVAC system;
alternatively, if requested, OAFC could be mounted on the roof of the HVAC system.
oRemote (“split”) AC option (indoor or outdoor HVAC system, connected to external cooled
water/glycol system or remote dry cooler) –side connection.
•Space heating (Hot Water connection) –bottom, side.
oSome connection location options for space heating pipe lines are limited to indoor installation only –
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 connection is to be brought to the gas heater directly.
•Electric Power and Control Connection. Electric power is normally brought to the HVAC system disconnect,
normally incorporated with main electric panel (see Pic. C.1). If HVAC system is not equipped with the
disconnect, power lines to be brought directly to the main electric panel.
CAUTION! Current manual shows general/default connections’ location. For details regarding specific HVAC
system’s connections (actual location, piping sizes and position dimensions, circuit type and flow direction etc.),
refer to the HVAC system’s submittal documentation as well as HVAC system’s labels and stickers.
NOTE. HVAC system MUST be equipped with a P-trap at the condensate connection for proper operation! If
HVAC system is requested from the factory without P-trap, one MUST be installed on site prior to HVAC system
being commissioned. Refer to the Installation Manual for details.
WARNING! Gas Line. The gas line must be installed in accordance with respective device documentation
(boiler, furnace, etc.) and local codes and regulations.

September 2020 7Quest IQ Compressor Wall OMM
Air Conditioning Options –Outdoor Air Dry coolers (OAFC).
Basic views of standard air conditioning options are shown on Pic.C.4 (below); standard combinations of the HVAC
system and dry cooler models (based on their capacities) are shown in Table C.1. Note, that depending on ambient
conditions, HVAC system may have different cooler provided with it - refer to the HVAC system’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 the cooler:
•Dry cooler NG-V-12 (Pic.C.4, Fig.1) is composed of one such block;
NG-V-22 (Fig.2) composed of two such blocks etc. largest single dry
cooler, NG-V-62 (Fig.3) composed of six of them.
As an option, each block of dry cooler could be equipped with the pump package (as shown on Fig.1 for NG-V-12).
Table C.1
HVAC system
Dry cooler
AG012 & AG016
NG-V-11
AG020, AG024
& AG030
NG-V-21
AG036
NG-V-12
AG045 & AG055
NG-V-22

Quest IQ Compressor Wall OMM 8September 2020
Attention! Equipment Clearances!
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 dimensions and other
details, refer to the submittal documentation.
Pic. C.4

September 2020 9Quest IQ Compressor Wall OMM
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:
oSerial number
oHVAC system model
(nomenclature)
oDesign room conditions (air
temperature and humidity)
Operational data, including:
oRefrigeration (refrigerant type,
charge, etc.)
oElectrical/airflow (HVAC system
voltage, CFM, etc.)
oOther applicable data
(space/auxiliary heating features,
etc.)
Labels and Stickers: attached when applicable
to the exterior and 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 similar manner (labels etc.).
Attention! Glycol Circuits.
Unless otherwise indicated, equipment fluid circuits (except for refrigeration fluid circuit) such as compressor
glycol loop, dry cooler etc., are normally filled/to be filled with water/glycol mixture; normally, rust inhibitor-
infused food-grade propylene glycol is used.
Glycol mixture concentration is normally shown on Main Label –refer as needed.
Note: The main label shown above is just an example.
Pic. C.5