AIREDALE EasiCool User manual

EMS52086FM00542
EasiCool™ EZRE
Technical Manual
Downow and Upow - Precision Air Conditioning
Direct Expansion
6kW - 60kW

EasiCool™ Precision Air Conditioning
2
Introduction
EasiCool Technical Manual 7525389 V1.8.0_05_2016
Warranty, Commissioning & Maintenance
As standard, Airedale guarantees all non consumable parts only for a period of 12 months, variations tailored to suit
product and application are also available; please contact Airedale for full terms and details.
To further protect your investment in Airedale products, Airedale can provide full commissioning services,
comprehensive maintenance packages and service cover 24 hours a day, 365 days a year (UK mainland).
For a free quotation contact Airedale or your local Sales Engineer.
All Airedale products are designed in accordance with EU Directives regarding prevention of build up of water,
associated with the risk of contaminants such as Legionella.
For effective prevention of such risk it is necessary that the equipment is maintained in accordance with Airedale
recommendations.
SafeCool
In addition to commissioning, a 24 hour, 7 days a week on-call service is available throughout the year to UK mainland
sites. This service will enable customers to contact a duty engineer outside normal working hours and receive
assistance over the telephone. The duty engineer can, if necessary, attend site, usually within 24 hours or less.
Full details will be forwarded on acceptance of the maintenance agreement.
Airedale Ltd endeavours to ensure that the information in this document is correct and fairly stated, but none of the
statements are to be relied upon as a statement or representation of fact. Airedale Ltd does not accept liability for any
error or omission, or for any reliance placed on the information contained in this document. The development of Airedale
products and services is continuous and the information in this document may not be up to date. It is important to check
the current position with Airedale Ltd at the address stated. This document is not part of a contract or licence unless
expressly agreed. No part of this document may be reproduced or transmitted in any form or by any means, electronic
or mechanical, including photocopying, recording, or information storage and retrieval systems, for any purpose other
than the purchaser’s personal use, without the express written permission of Airedale Ltd.
© 2016 Airedale International Air Conditioning Limited. All rights reserved. Printed in the UK.
Warranty cover is not a substitute for maintenance. Warranty cover is conditional to maintenance
being carried out in accordance with the recommendations provided during the warranty period.
Failure to have the maintenance procedures carried out will invalidate the warranty and any
liabilities by Airedale International Air Conditioning Ltd.
Spares
A spares list for 1, 3 and 5 years will be supplied with every unit and is also available from our Spares department on
request.
Training
As well as our comprehensive range of products, Airedale offers a modular range of Refrigeration and Air Conditioning
Training courses, for further information please contact Airedale.
Customer Services
For further assistance, please e-mail: [email protected] or telephone:
UK Sales Enquiries + 44 (0) 113 239 1000 [email protected]
International Enquiries + 44 (0) 113 239 1000 [email protected]
Spares Hot Line + 44 (0) 113 238 7878 [email protected]
Airedale Service + 44 (0) 113 239 1000 [email protected]
Technical Support + 44 (0) 113 239 1000 [email protected]
Training Enquiries + 44 (0) 113 239 1000 [email protected]
For information, visit us at our Web Site: www.airedale.com
CAUTION

EasiCool™Precision Air Conditioning
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EasiCool Technical Manual 7525389 V1.8.0_05_2016
Introduction
Health and Safety
IMPORTANT
The information contained in this manual is critical to the correct operation and maintenance of the unit and should be
read by all persons responsible for the installation, commissioning and maintenance of the Airedale unit.
Safety
The equipment has been designed and manufactured to meet international safety standards but, like any mechanical/
electrical equipment, care must be taken if you are to obtain the best results.
When working with any air conditioning units ensure that the electrical isolator is switched off prior
to servicing or repair work, and that there is no power to any part of the equipment.
Also ensure that there are no other power feeds to the unit such as re alarm circuits, BMS circuits
etc.
Electrical installation commissioning and maintenance work on this equipment should be undertaken by competent and
trained personnel in accordance with local relevant standards and codes of practice.
The refrigerant used in this range of products is classied under the COSHH regulations as an irritant, with set
Workplace Exposure Levels (WEL) for consideration if this plant is installed in conned or poorly ventilated areas.
A full hazard data sheet in accordance with COSHH regulations is available should this be required.
Protective Personal Equipment
Airedale recommends that personal protective equipment is used whilst installing, maintaining and commissioning
equipment.
Refrigerant Warning
The Airedale Easicool unit uses R410A refrigerant which requires careful attention to proper storage and handling
procedures.
Use only manifold gauge sets designed for use with R410A refrigerant. Use only refrigerant recovery units and cylinders
designed for high pressure refrigerants.
R410A must only be charged in the liquid state to ensure correct blend makeup.
The refrigerant must be stored in a clean, dry area away from sunlight. The refrigerant must never be stored above
50°C.
Global Warming Potential
R410A = 1900
Manual Handling
Some operations when servicing or maintaining the unit may require additional assistance with regard to manual
handling. This requirement is down to the discretion of the engineer.
Remember do not perform a lift that exceeds your ability.
EN378-1 :2008 (100 year life)
CAUTION

EasiCool™ Precision Air Conditioning
4
Introduction
EasiCool Technical Manual 7525389 V1.8.0_05_2016
Environmental Considerations
Freeze Protection
Airedale recommends the following actions to help protect the unit during low temperature operation. This also includes
the units subject to low ambient temperatures.
Units with supply water temperatures below +5°C
Glycol is recommended when a supply water temperature of +5°C or below is required or when static water can be
exposed to freezing temperatures.
Units subject to ambient temperatures lower than 0°C
Glycol of an appropriate concentration(1) is used within the system to ensure adequate protection. Please ensure that the
concentration is capable of protection at least 3°C lower than ambient.
Water / glycol solution is constantly circulated through all waterside pipe work and coils to avoid static water from
freezing.
Ensure that pumps are started and running even during shut down periods, when the ambient is within 3°C of the
solution freeze point (1) (i.e. if the solution freezes at 0°C, the pump must be operating at 3°C ambient).
(1) Refer to your glycol supplier for details
Environmental Policy
It is our policy to:
• Take a proactive approach to resolve environmental issues and ensure compliance with regulatory requirements.
• Train personnel in sound environmental practices.
• Pursue opportunities to conserve resources, prevent pollution and eliminate waste.
• Manufacture products in a responsible manner with minimum impact on the environment.
• Reduce our use of chemicals and minimise their release to the environment.
• Measure, control and verify environmental performance through internal and external audits.
• Continually improve our environmental performance.
CE Directive
Airedale certify that the equipment detailed in this manual conforms with the following EC Directives:
Electromagnetic Compatibility Directive (EMC) 2014/30/EU
Low Voltage Directive (LVD) 2014/35/EU
Machinery Directive (MD) 89/392/EEC version 2006/42/EC
Pressure Equipment Directive (PED) 97/23/EC
Article 13 2014/68/EU
To comply with these directives appropriate national & harmonised standards have been applied. These are listed on the
Declaration of Conformity, supplied with each product.

EasiCool™Precision Air Conditioning
Warranty, Commissioning & Maintenance 2
Customer Services 2
Health and Safety 3
Manual Handling 3
Environmental Considerations 4
Freeze Protection 4
Environmental Policy 4
Speciers Guide 7
Nomenclature 7
Introduction 7
Unit Overview 8
Construction 9
Refrigeration Components 10
Airow Components 15
Electrical Components 18
Heating and Humidication 19
Humidication 21
Controls 22
General Features 27
Sound Measurement Method 30
Dimensional & Installation Data 32
Dimensions 32
Positioning 37
Minimum Unit Clearances 38
Weights 40
Refrigeration Pipework 42
Refrigerant Charging Guide 44
Packaged Unit Pre-Charged Refrigerant Volumes 45
Oil Charging Guide 48
Refrigerant Pipesizing Guide - X Type Downow 49
Ethylene Glycol Correction Factors - WX Models 51
Water Detection Tape Installation 52
System Pipework Schematic 54
Interconnecting Wiring 56
pLAN Termination 57
Contents
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EasiCool Technical Manual 7525389 V1.8.0_05_2016
Introduction

EasiCool™ Precision Air Conditioning
Technical Data 58
Technical Data Downow Units X Type 59
Performance Data 59
Noise Data 63
DF6X - DF10X 66
DF13X - DF17X 68
DF20X2 - DF26X2 70
DF28X - DF31X 72
DF35X - DF45X 74
DF50X2 - DF60X2 76
Hydronic Data Low Pressure Hot Water 78
Technical Data Upow Units X Type 80
Performance Data Standard Condenser 80
Noise Data 84
V6X - V10X 86
V13X - V17X 88
V20X2 - V26X2 90
V28X- V31X2 92
V35X - V45X2 94
V50X2 - V60X2 96
Hydronic Data Low Pressure Hot Water 98
Technical Data Downow Units WX Type 100
Performance Data 100
Noise Data 102
DF6WX - DF10WX 104
DF13WX - DF17WX 106
DF20WX2 - DF26WX2 108
DF28WX - DF31WX 110
DF35WX - DF45WX 112
DF50WX2 - DF60WX2 114
Hydronic Data Condenser Waterside Pressure Drop 116
Hydronic Data Low Pressure Hot Water 117
Technical Data Upow Units WX Type 118
Performance Data 118
Noise Data 120
V6WX - V10WX 122
V13WX - V17WX 124
V20WX2 - V26WX2 126
V28WX - V31WX2 128
V35WX - V45WX 130
V50WX2 - V60WX2 132
Hydronic Data Condenser Waterside Pressure Drop 134
Hydronic Data Low Pressure Hot Water 135
Fan Data 136
Calculating Total Static Pressure 136
Fan Speed Data 137
EZRE Direct Expansion 400V 50Hz (-0) 138
After Sales 145
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Introduction
EasiCool Technical Manual 7525389 V1.8.0_05_2016

EasiCool™Precision Air Conditioning
Nomenclature
Speciers Guide
DF
V
DF 60 X2 EZRE 0
60
X
CW
WX
DX Air Cooled
DX Water Cooled
Chilled Water Cooling
400V / 3PH / N / 50Hz
220V / 3PH / 60Hz
0
2
380V / 3PH / N / 60Hz
1
Downflow
Upflow
Nominal Cooling Capacity kW
EZE EasiCool R407C
EZRE EasiCool R410A
Example
Introduction
Designed to provide environmental Precision Air Conditioning for applications such as Telecommunication Facilities,
Computer Rooms, Data Centres, Clean Rooms and laboratories.
The EasiCool range comprises of:-
38 models as direct expansion air cooled and 38 models as water cooled (Covered in this document) (-0 range).
34 models as Single circuit chilled water. (Seperate document).(-0, -1 and -2 range)
23 Models as direct expansion air cooled and 23 models as water cooled (Seperate document ) (-1 range)
36 Models as direct expansion air cooled and 36 models as water cooled (Seperate document ) (-2 range)
Full function units provide full control of temperature, humidication, de-humidication, heating and ltration.
The modular design of the EasiCool allows grouping of differing model types and capacities to be installed side by side.
The exibility of this type of installation provides for multi-circuit functionality.
A full range of air cooled condensers is available with the direct expansion indoor units to provide a matched system
with optional performance upgrade.
Also available is a full range of Airedale water chillers to complement the chilled water indoor units.
The range has been designed and optimised for operation with ozone benign refrigerant R410A.
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Introduction

EasiCool™ Precision Air Conditioning
8
Introduction
EasiCool Technical Manual 7525389 V1.8.0_05_2016
Fan Motor Assembly
Cooling Coil
Scroll Compressors
Control Panel
Humidifier
Air Filters
Unit Overview
Fan Motor Assembly
Cooling Coil
Scroll Compressors
Control Panel
Humidifier
Air Filters
Heating
●Electric
●Low Pressure Hot Water
●Hot Gas
Upow
Downow

EasiCool™Precision Air Conditioning
Construction
The cabinet comprises an black painted aluminium frame with black aluminium corners and removable galvanised sheet
steel panels. The unit panels are manufactured from galvanised sheet steel coated with epoxy baked powder paint to
provide a durable nish.
Standard unit colour is Black Grey (RAL 7021). Optional Light Grey (RAL 7035)
Cabinets are lined internally with re resistant foam (UL94 V0) thermal and acoustic insulation:
• 30mm deep for removable panels
• 12mm deep for remaining internal surfaces
The cabinet doors are full height, hinged and key lock secured. Hinge arrangement allows exible door opening/removal
for improved access.
Rubberised door seals reduce sound breakout and eradicate leakage.
Simple bolt on type doors are available as a cost effective option.
Unit design incorporates a series of M6 xings to the top and bottom face for connecting to customer ductwork, please
contact Airedale for further details.
Sizes 6 - 26
Dependent upon model type, components such as the expansion valve, compressor, humidier and sight glass are
contained within an acoustically lined enclosure to provide both ease of maintenance and to minimise sound emission.
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Introduction

EasiCool™ Precision Air Conditioning
System Conguration
Downow Upow
X Type WX Type X Type WX Type
Refrigeration
Efcient Fixed Speed Scroll Compressor ●●●●
Evaporator Coil ●●●●
Refrigeration Sight Glass ●●●●
Oil Separator ○○○○
Liquid Line Solenoid Valve ○○○○
Refrigerant Pump down ○○○○
Hot Gas Reheat ○–○–
Suction Throttle Valve ○○○○
BPHE Condenser ○●○●
Thermostatic Expansion Valves (TEV) ●●●●
Electronic expansion Valves (EEV) ○○○○
● Standard Feature ○ Optional Feature – Not Available
Evaporator
Large surface area coil(s) ideally positioned to optimise airow and heat transfer, manufactured from refrigeration quality
copper tube with mechanically bonded aluminium ns.
The copper tube is internally ried for improved heat transfer.
Fins are coated with a non-stick acrylic lm (hydrophilic) which provides additional corrosion protection and efcient
surface water removal for improved performance.
The cooling coil is mounted over a full width stainless steel condensate tray.
Factory pressure tested to 45 Barg.
X Models Only Sweat copper pipe for brazed connection as standard.
Refrigeration Components
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Introduction
EasiCool Technical Manual 7525389 V1.8.0_05_2016
Electronic Expansion Valve Scroll Compressor

EasiCool™Precision Air Conditioning
Compressor
Compressor(s) are mounted on the base via the use of vibration isolators.
Each compressor is designed for use with R410A refrigerant.
X X2 WX WX2
Thermal Protection ●●●●
Single Compressor ●–●–
Tandem Compressors –●–●
● Standard Feature ○ Optional Feature – Not Available
Tandem Compressors
Comprising of 2 scroll type compressors linked together by refrigerant pipework to
one common circuit.
Tandem compressors provide variable control of the system performance by
activating individual compressors as required. Multiple steps of unloading allow
external load demands to be met with greater precision, eliminating unnecessary
temperature and humidity variations. Consequently, system efciency and reliability
are much improved by extending major component working hours.
X and WX Models
Utilise a single hermetic scroll compressor tted as standard with:
• Thermal motor protection internal or external (dependent upon model size)
• High temperature discharge protection
X2 and WX2 Models
Utilise a tandem hermetic scroll compressor set, to provide 2 stages of control, tted
as standard with:
• Thermal motor protection internal or external (dependent upon model size)
• High temperature discharge protection
• Sight glass on common equalisation line.
Refrigeration
Each refrigeration circuit features as standard:
X Type
• Externally Equalised Thermostatic
Expansion Valve (TEV)
• Sight Glass
• Head Pressure Control
• Filter Drier
• Low Pressure Switch
• High pressure Switch
• Liquid Line Pressure Transducer
• Holding Charge of Inert Gas
WX Type
• Externally equalised thermostatic expansion valve (TEV)
• Sight Glass
• Head Pressure Control
• Filter Drier
• Low Pressure Switch
• High Pressure Switch
• Liquid Line Pressure Transducer
• Full operating charge of R410A
• Bleed valve
• Binder points
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Introduction

EasiCool™ Precision Air Conditioning
Head Pressure Control - Intelligent Modulation
(X Models)
The system is tted with a voltage regulating fan speed controller which allows set point adjustment and system
monitoring via the indoor unit microprocessor controller.
A pressure transducer is tted to the liquid line which in turn feeds back the head pressure to the microprocessor. The
condenser fan speed can then modulate via the controller to provide optimum control under varying ambient conditions.
The head pressure can be monitored via the display keypad.
Units tted with thermostatic expansion valves (TEV) have the head pressure factory set to 26 Barg (377 psig).
Units tted with optional electronic expansion valves (EEV) have the head pressure factory set to 22 Barg (319 psig).
The head pressure can be monitored via the display keypad.
Low Noise Feature for Condenser Fan
(X Models)
Specically designed for night time operation as optimum low noise levels are achieved with reduced ambient
temperature and room loads, this feature is also ideal for residential and other outdoor noise critical applications.
Initiated by setting the microprocessor programmable time clock, the head pressure set point changes from the standard
26 barg (377 psig) (TEV) or 22 barg (319 psig) (optional EEV) to 34 barg (493 psig), reducing the outdoor unit fan speed
and corresponding operating sound levels.
This feature is enabled by the inclusion of an optional clock card within the microprocessor.
Head Pressure Control -Intelligent Modulation
(WX Models)
A 3 way regulating valve, electronically actuated via the microprocessor, utilises a liquid line pressure transducer to
measure and adjust head pressure. The valve will allow cooling water to ow to the condenser, to bypass the condenser,
or to allow water ow to both condenser and by-pass line in order to maintain correct refrigerant head pressure.
The head pressure can be monitored via the display keypad.
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Introduction
EasiCool Technical Manual 7525389 V1.8.0_05_2016

EasiCool™Precision Air Conditioning
100
90
80
70
60
50
40
30
20
10
Capacity (%)
0
1
2
EER
Fully Closed Fully Open
Minimum
Maximum
Hot Gas Re-Heat (HGRH)
(X Models)
The HGRH system consists of a heating coil and solenoid valve(s) and can be tted to units with humidication selected.
The microprocessor monitors the temperature and humidity setpoints and initiates HGRH to provide optimum system
efciency.
HGRH may be tted instead of electric heating or low pressure hot water.
During dehumidication, the hot gas re-heat coil re-heats the cooled air from the evaporator coil using hot gas from
the discharge line to maintain the room setpoint. Normally reheating of the air during dehumidication is performed by
electric heating which requires additional power input. By utilising the available hot gas, the HGRH option does not
require additional power input and is therefore far more energy efcient than electric heating.
Electric Heat Energy Input
Comparable HGRH Energy Input
Average Energy Input Comparison HGRH vs Electric Heat
Suction Throttle Valve
The valve can be selected for units tted with EEVs.
An electrically operated suction throttle valve can be tted to provide accurate capacity control from 50% to 100%
depending on the room load. Precise temperature control is obtained as a result of modulating the refrigerant ow in the
evaporator by throttling the valve on the suction line.
1 Capacity @ 24°C / 45% RH return air conditions
2 EER @ 24°C / 45% RH return air conditions
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Introduction

EasiCool™ Precision Air Conditioning
1 Compression
2 Condensation
3 Expansion
4 Evaporation
Key:
(1) Cooling Cycle @ 22°C ambient with a conventional TEV tted.
(2) Cooling cycle @ 22°C ambient, demonstrating a typical EEV condensing temperature taking full advantage of lower
ambient air temperatures (below 35°C).
Heat of Rejection
Reduction in
Compressor Input
Power
Enthalpy kJ/kgIncrease in
Cooling Duty
Evaporating
Pressure
Reduced
Condensing
Pressure
Presssure
Bara
Thermostatic Expansion Valve (1)
Electronic Expansion Valve (2)
1
2
3
4
Electronic Expansion Valves (EEV)
Electronic expansion valves differ to the normal thermostatic expansion valves in their
ability to maintain control of the suction superheat at reduced head pressures. This
can lead to signicant energy savings particularly at reduced loading and low ambient
temperatures.
EEV step position, superheat setpoint, head pressure set point and other features can be
viewed and adjusted via the microprocessor display.
Whilst offering versatile control at the full design duty of the unit, TEVs do not
automatically optimise themselves to all operating conditions. Therefore, if the refrigeration
system is operating at 40% or 50% of full load, especially at a lower ambient temperature
than that for which the valve was sized, the conventional TEV must have the design
head pressure available to ensure good refrigerant control. Maintaining an articially high
condensing pressure is normal in conventional systems.
Using an EEV allows for good refrigeration control whilst operating at part load and lower
ambient conditions with a reduced condensing pressure. By tting an EEV and adjusting
the head pressure control setting an increase in the system EER (Energy Efciency Ratio)
of up to 30% can typically be seen. The Mollier diagram shown below helps to illustrate
how this increase in efciency is achieved.
EEV’s differ to normal thermostatic expansion valves in their ability to maintain control
of refrigerant ow and the suction superheat at reduced head pressures. The turn-down
rate of a typical EEV is superior to that of it’s thermostatic equivalent, such that a reduced
optimum condensing pressure can be maintained at low compressor load. However low
the load is on the compressor, from zero to 100%, there will not be a problem with turn
down, even down to 10% of the valves rated capacity.
14
Introduction
EasiCool Technical Manual 7525389 V1.8.0_05_2016

EasiCool™Precision Air Conditioning
System Conguration
Downow Upow
X Type WX Type X Type WX Type
EC Fans 6 - 26 ●●●●
Airow Components
AC Fans 6 - 26 ○○○○
AC Fans 28 - 60 ●●●●
EC Fans 28 - 60 ○○○○
AC Larger Fan Motor** ○○○○
2 way Discharge Grille – – ○ ○
3 Way Discharge Grille – – ○ ○
Return Air Grille – – ● ●
G4 Return Door Air Filter ○○○○
● Standard Feature ○ Optional Feature – Not Available
** Model Dependant on selected units with AC fans as standard.
Airow Components
EC Direct Drive Forward
Curve Fan
EC Direct Drive Backward
Curve Fan
Pleated Disposable Panel Filter
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EasiCool Technical Manual 7525389 V1.8.0_05_2016
Introduction

EasiCool™ Precision Air Conditioning
EC Motor
Sizes 6 - 26
(Direct Drive)
Units utilise a double inlet, forward curved, direct drive centrifugal fan with integral shaft mounted EC motor which is
statically and dynamically balanced for quiet operation. Impellers and casings are galvanised for protection against
corrosion. The integral motor runs in sealed for life, lubricated bearings and features automatic thermal overload
protection.
Fan speed, airow and external static pressure are controlled by the use of a 0-10 Volts signal via the microprocessor
display keypad which offers easy on site adjustment.
Adjustable by increments of 1% within + / - 10% of the set point.
Sizes 6 - 17
Units have a single fan and motor assembly.
Sizes 20 - 26
Units have 2 fan and motor assemblies.
Sizes 28 - 60
(Belt & Pulley) Double inlet forward curved centrifugal fan(s) with galvanised impellers and casing.
Mild steel fan shaft with lifetime lubricated ball bearings.
Fan and drive assembly design is based on a minimum of 25,000 hours life expectancy.
Each fan assembly is separately driven by a high efciency air cooled AC motor through a pulley and ‘V’ belt drive. The
complete motor assembly is mounted on a fully adjustable platform for belt tensioning. Motor specication conforms to
Efciency Class 1(IE2).
With integrated plummer block bearings (4kW motors only).
Sizes 28 - 45
Units have a single fan and motor assembly.
Sizes 50 - 60
Units have 2 fan and motor assemblies.
Large AC fan motor options available on most sizes, refer to Mechanical Data.
Energy efcient Electronically Commutated (EC) fans are also available.
Airow Switch
An adjustable differential pressure switch activates a visual alarm at the status panel and breaks the power supply in the
event of a fan or motor failure.
Filters
Pleated disposable panel lters in a rigid frame. Conform to BS EN 779-G4.
Access and removal from unit front.
As standard the microprocessor provides an alarm following a preset run time limit being exceeded.
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Introduction
EasiCool Technical Manual 7525389 V1.8.0_05_2016

EasiCool™Precision Air Conditioning
Fan & Motor Assembly Optional Features
Larger & Next Larger Fan Motor
(AC Fan Motors Only Sizes 28 to 60)
For applications where higher static air pressures are required, a larger fan and motor assembly size can be tted to
replace the standard assembly and is available on most models.
Electronically Commutated (EC) Fan Motor
Sizes 6 - 60
Backward curved impellers, direct drive centrifugal fan assemblies with integral rotor mounted motor which is statically
and dynamically balanced for quiet operation.
Designed for high corrosion resistance, the impellers are laser welded aluminium with a galvanised rotor and die cast
aluminium EC power module.
EC motors incorporate integrated electronics to convert AC power to DC for efcient and accurate speed control and are
adjustable via the microprocessor display keypad.
The fans offer maximum airow performance while keeping sound levels to a minimum.
The fans are mounted within a oorstand complete with adjustable feet, optional legs and oor tile lip.
(models DF28 - 60 only)
EC motors are DC motors with integrated AC to DC conversion; this gives the exibility of connecting to AC mains with
the efciency and simple speed control of a DC motor. The EC fan offers signicant power reduction in comparison
with equivalent AC fan at both full and modulated fan speeds. The inbuilt EC fan control module allows for fan speed
modulation from 15-100%, a standard AC fans modulating range is typically 40 to 100% of full fan speed.
The EC fan presents superior energy efciency at full and reduced fan speed compared to the equivalent AC fan motor.
Standard voltage regulated (VR) fan speed controllers offer a linear response. By comparison the EC fan is adjusted on
demand via the unit microprocessor with precision, offering substantial energy savings.
The following illustration shows a comparison of the typical power input required by each method.
Input Power
Airflow
EC (Electronically Commutated) Fan Speed Control
Regulated (VR) Fan Speed Control
Key
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Introduction

EasiCool™ Precision Air Conditioning
Electrical
The control panel contains the necessary compressor starter contactors, transformer, sub circuit protection, volt free
contacts for a common alarm and mains and inter-connecting terminals. The panel is situated within the cabinet and can
be removed for essential maintenance of other components within the unit. The electrical control panels are wired to the
latest European standards and codes of practice.
Sub Fusing
The electrical mains supply for the system’s outdoor unit is supplied via the indoor unit.
MCBs are tted for protection.
Main Electric Isolator
To ensure complete unit isolation of the electrical panel during adjustment and maintenance a door interlocking isolator
is provided as standard.
Energy Manager
Analysis of system energy consumption can be monitored via a dedicated LCD display. Unit parameters can be adjusted
via the unit microprocessor control to affect energy usage in line with the system need.
Phase Rotation Protection
A phase sequence relay shall be avaliable for units containing 3 phase scroll compressors, to prevent possible damage
by running the compressor the wrong direction.
Electrical Components
System Conguration
Features Downow Upow
X Type WX Type X Type WX Type
Electrical
Electrical Switch Gear ●●●●
Door Interlocking Electric Isolator ●●●●
Energy Manager ○○○○
Phase Rotation Monitoring ○○○○
Thyristor Controlled Electric Heat ○○○○
● Standard Feature ○ Optional Feature – Not Available
If Phase Rotation Protection and an Energy Manager unit are both required, the Energy Manager
will require the addition of a Field Card, please contact Airedale.
Energy Manager
IMPORTANT
18
Introduction
EasiCool Technical Manual 7525389 V1.8.0_05_2016

EasiCool™Precision Air Conditioning
System Conguration
Features Downow Upow
X Type WX Type X Type WX Type
Heating
Electric Heat ○○○○
Hot gas Reheat ○–○–
Low Pressure Hot Water ○○○○
Humidication
Humidier ○○○○
Hot Water Condensate Pump ○○○○
Low Conductivity (Soft Water) Bottle ○○○○
Standard Conductivity (Moderate/Hard Water) Bottle ○○○○
High Conductivity (Very Hard Water) Bottle ○○○○
Cleanable Humidier Bottle ○○○○
● Standard Feature ○ Optional Feature – Not Available
Heating and Humidication
Heating
Hot Gas Re-Heat (HGRH)
(X Models) Refer to Hot Gas Re-Heat (HGRH).
Or
Electric Heating
Multi-stage nned electric heating elements complete with auto and manual reset overheat cut-out protection.
Electric Heating Thyristor Control
Offers precision control between 0 - 100% via the microprocessor.
Or
Low Pressure Hot Water
A low pressure hot water coil constructed of refrigeration quality copper tube and mechanically bonded aluminium ns
can be factory tted.
Frost protection is tted to prevent freezing of the low pressure hot water coil assembly.
Proportional heating control is provided by a factory tted 3 port, raise/lower type, modulating valve.
Access to the Right hand side of the unit is required to set up the regulating valve
Electric Heat Humidier
19
EasiCool Technical Manual 7525389 V1.8.0_05_2016
Introduction

EasiCool™ Precision Air Conditioning
Humidier - Intelligent Modulation
Humidication is provided by an electrode boiler. The sealed humidier design ensures that only clean sterile steam
is supplied to the conditioned area and corrosive salts and minerals are held in the disposable bottle. The steam is
distributed through a sparge pipe tted to the coil assembly.
Featuring modulating capacity output control as standard, the system provides continuous modulation of steam output
in response to a proportional control signal. The output control range is 20%-100% of the humidier rated value and
is designed to give an approximate steam output of +/- 3% at 25°C at the sensor, thus ensuring precise control of the
conditioned space.
The cylinder operating life time is automatically optimised via the integrated water conductivity sensor, which combined
with the controls monitors and regulates the water rell cycle to reduce excessive salt deposits and the progressive wear
of the cylinder.
All humidier parameters and alarms are accessible and adjustable via the microprocessor display keypad unit, main
features include:
• Supply water conductivity (µS/cm)
• Actual steam output (kg/h)
• Required steam output (kg/h)
• Actual current rating (A)
• Required current rating (A)
• Status mode (Start Up, Running, Filling, Draining)
Water Conductivity & Cylinder Type Conductivity is a measure of the ability of water to pass an electric current,
measured in micro Siemens / centimetre (µS/cm). 3 different cylinders are available which correspond to the supply
water conductivity.
Matching the correct cylinder type with the conductivity of the supply water ensures optimum performance and increases
the life span of the cylinder.
1 Low Conductivity (Soft Water) 100 to 350 µS/cm
2 Standard Conductivity (Moderate/Hard Water) 350 to 750 µS/cm
3 High Conductivity (Very Hard Water) 750 to 1250 µS/cm
As standard the humidier is tted with the standard conductivity cylinder which covers the majority of water supplies.
Where the water conductivity is known, please specify at order. For further details please contact Airedale.
The supply water pressure to the humidier assembly must be between 1 - 8 barg.
CAUTION
20
Introduction
EasiCool Technical Manual 7525389 V1.8.0_05_2016