AIREDALE EasiCool Evo2 31-98kW Precision Air Conditioner Technical Manual

AIREDALE
Brand
AIREDALE
Model
EasiCool Evo2 31-98kW Precision Air Conditioner
Category
Split-system air conditioners
Type
Technical Manual
EasiCool Evo²
DX 31kW - 80kW
Dual Cool 30kW
CW 38kW - 98kW
R410A
Technical Manual
Original Instructions
2TM EasiCool Evo2 9921347 v.1.0_21.06.2021
Precision Air ConditioningEasiCoolTM
Customer Services
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 eff ective prevention of such risk it is necessary that the equipment is maintained in accordance with Airedale
recommendations.
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 off ers 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
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.
©2021 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.
CAUTION
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EasiCoolTM
Customer Services
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 eff ective prevention of such risk it is necessary that the equipment is maintained in accordance with Airedale
recommendations.
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 off ers 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
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.
©2021 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.
CAUTION
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 this 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.
undertaken by competent and trained personnel in accordance with local relevant standards and codes of practice.
A full hazard data sheet in accordance with COSHH regulations is available should this be required.
Personal Protective Equipment
Airedale recommends that personal protective equipment is used whilst installing, maintaining and commissioning
equipment.
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.
Refrigerant Warning
The Airedale 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.
Pressure Equipment Directive (2014/68/EU)
Minimum and Maximum Operation Temperature (TS) and Pressure (PS)
Refrigeration
AllowableTemperature Range (TS) = Min -5°C* to Max 120°C**
Maximum Allowable Pressure (PS) = High Side 40.5 Barg, Low Side 29Barg
*Based on the refrigerant temperature in the unit off state in the lowest permitted ambient temperature.
**Based on the maximum allowable super heated refrigerant temperature.
Waterside
AllowableTemperature Range (TS) = Min -5°C* to Max 40°C**
Maximum Allowable Pressure (PS) = 10 Barg
*Based on the waterside temperature in the unit off state in the lowest permitted ambient temperature.
**Based on the waterside temperature in the unit off state in the highest permitted ambient temperature.
Pressure System Safety Regulations 2000
Refrigeration assemblies/systems may constitute a Pressure System as defi ned in the Pressure System Safety
Regulations 2000.
Global Warming Potential
The R410A refrigerant has a GWP of 2088 (based on EN378-1:2016, 100 year life)
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.
Ensure that there are no other power feeds to the unit such as fi re alarm circuits, BMS circuits etc.
Electrical installation commissioning and maintenance work on this equipment should be
CAUTION
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Environmental Considerations
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) must be used within the system to ensure adequate freeze protection.
Please ensure that the concentration is capable of protection to at least 3K lower than ambient.
●Water / glycol solution should be constantly circulated through all waterside pipework 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 3K 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
Machinery Directive (MD) 89/392/EEC version 2006/42/EC
Pressure Equipment Directive (PED) 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.
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EasiCoolTM
Environmental Considerations
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) must be used within the system to ensure adequate freeze protection.
Please ensure that the concentration is capable of protection to at least 3K lower than ambient.
●Water / glycol solution should be constantly circulated through all waterside pipework 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 3K 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
Machinery Directive (MD) 89/392/EEC version 2006/42/EC
Pressure Equipment Directive (PED) 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.
Contents
Nomenclature 6
Unit Overview 7
Construction 8
Refrigeration Components 9
Chilled Water Components 13
Airow Components 14
Electrical Components 16
Fire Detection 16
Smoke Detection 16
Water Detection Tape 16
Water Detection Probe 16
Heating and Humidication 17
Humidication Control Principles 18
General Features 20
Dimensional & Installation Data 23
Dimensions 23
Incoming Services 28
Centre of Gravity 32
Positioning 33
Minimum Unit Clearance 33
System Pipework Schematic 35
Refrigeration Pipework 37
Refrigerant Charging Guide 39
Refrigerant Pipe Sizing Guide 40
Chilled Water Pipe Sizing Guide 40
Oil Charging Guide 43
Unit-to-Unit Network Termination 44
Interconnecting Wiring 45
Commissioning 46
Airow Switch Setup 46
Water Detector Tape Installation 47
Technical Data 48
Operating Limits 48
Performance Data 49
Sound Measurement Method 53
Sound Data 54
Mechanical and Electrical Data - DX 61
Mechanical and Electrical Data - CW 65
Mechanical and Electrical Data - Dual Cool 67
After Sales 68
Warranty 68
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Introduction
Introduction
Nomenclature Example: ED 25 T 80 R - 1 X 2 0 - 0
ED EasiCool Downow
EU EasiCool Upow
15 Case width in decimetres (1460mm) 750mm Deep Case
18 Case width in decimetres (1835mm) 750mm Deep Case
22 Case width in decimetres (2170mm) 750mm Deep Case
25 Case width in decimetres (2550mm) 750mm Deep Case
FFront Return Air
RRear Return Air
BBase Return Air (Upow only)
TTop Return Air (Downow only)
No. Nominal cooling capacity (kW)
RRefrigerant - R410A
-
1Single DX/CW circuit
2Dual DX/CW Circuit
CChilled Water
XAir Cooled - Compressor Indoor
0No Compressors
1One Compressor / Circuit
2Two Compressors / Circuit
0No Secondary Cooling Coil
CSecondary Cooling Coil (Chilled Water)
-
0400V/3~/50Hz
1380V/3~/60Hz
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Introduction
Upow
Air Filters
Humidier
Fan Motor Assembly
Electric Heating
Coil
Control Panel
Fan Motor Assembly
Control Panel
HumidierAir Filters
Coil
Electric Heating
Example shown is ED/EU15.
Unit Overview
Downow
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Introduction
Construction
The cabinet comprises of a 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 hinged and key lock secured. Hinge arrangement allows exible door opening/removal for
improved access. Rubberised door seals reduce sound breakout and eradicate leakage.
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.
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
Features System Conguration
DX CW Dual Cool
Refrigeration
Evaporator Coil ●–●
Ecient Fixed Speed Scroll Compressor(s) ●–●
Refrigeration Sight Glass ●–●
Liquid Line Solenoid Valve ●–●
Filter Drier ●–●
Low Pressure Switch ●–●
High Pressure Switch ●–●
Discharge Line Pressure Transducer ●–●
Head Pressure Control - Intelligent Modulation ●–●
Low Noise Feature for Condenser Fan ○–○
Remote RTPF Condenser ○–○
Remote MCHX Condenser ○–○
Low Ambient Kit ○–○
Discharge Non Return Valve ●–●
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 ecient
surface water removal for improved performance. The cooling coil is mounted over a full width stainless steel
condensate tray. The evaporator is factory pressure tested to 45Barg.
DX Models Only: Sweat copper pipe for brazed connection as standard.
Compressor
Compressor(s) are mounted on the base via the use of vibration isolators.
Each compressor is designed for use with R410A refrigerant.
Refrigeration Components
Electronic Expansion Valve Scroll Compressor
X1 X2
Thermal Protection ● ●
Single Compressor ●–
Tandem Compressors –●
● Standard Feature – Not Available
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Introduction
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 eciency and reliability are much improved by
extending major component working hours.
Refrigeration
X Type refrigeration circuit features as standard:
• Externally Equalised Thermostatic Expansion Valve (TEV).
• Sight Glass.
• Head Pressure Control.
• Filter Drier.
• Low Pressure Switch.
• High pressure Switch.
• Discharge Line Pressure Transducer.
• Holding Charge of Inert Gas.
X1 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 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.
Head Pressure Control - Intelligent Modulation
(X Models)
The system allows set point adjustment and system monitoring via the indoor unit microprocessor controller.
A pressure transducer is tted to the discharge 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, when optimised lower noise levels are achieved with reduced ambient
temperature and room loads, this feature is ideal for residential and other outdoor noise critical applications.
Enabled within the controller, the user can dene the low noise schedule during which the outdoor fan speed is limited to
reduce noise levels.
Remote RTPF Condenser Coil
Designed for a small footprint, low sound level, slimline and aesthetically pleasing appearance. Available in either
horizontal or vertical air discharge orientation,
Manufactured from galvanised sheet steel coated with epoxy baked powder paint to provide a durable nish.
Round tube plate n condenser coil 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. The coil is factory pressure tested to 45Barg and is available in either horizontal or vertical air discharge
orientation.
Remote Microchannel Condenser Coil
The large surface area coil is ideally positioned to optimise airow and heat transfer. It comprises of microchannel
condenser coil and epoxy coated aluminium ns, and is supplied with a sweat copper pipe for brazed connection on site.
The coil is factory pressure tested to 45Barg and is available in either horizontal or vertical air discharge orientation.
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Introduction
Low Ambient Kit
LAK Operation
The LAK allows the unit to operate in lower ambients by raising the condensing pressure through ooding the condenser
and reducing the surface area available for heat rejection. This ensures the discharge pressure is maintained and the
unit continues to work eciently at lower ambient temperatures.
Please see diagram below.
Shut off Valve
Shut off Valve Shut off Valve
Non Return Valve
Pressure Relief
Head Pressure
Control Valve
Outdoor UnitIndoor Unit
LR
Discharge
Discharge
Liquid
Liquid Receiver
HPCV
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Introduction
Compressor Discharge Line Non Return Valve
Non return valves shall be tted to ensure liquid refrigerant cannot enter the compressors through the discharge line in
the compressor o state.
Liquid Line Solenoid Valve
A liquid line solenoid valve is tted to prevent liquid migration during the o state.
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 dier 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 oering 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 Eciency Ratio)
of up to 30% can typically be seen. The Mollier diagram shown below helps to illustrate
how this increase in eciency is achieved.
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.
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Introduction
Chilled Water Coil
Large surface area coil shall be ideally positioned to optimise airow and heat transfer, they shall be manufactured
from plain copper tubes with mechanically bonded aluminium ns. Fins shall be coated with a non-stick acrylic lm
(hydrophilic) to provide additional corrosion protection and ecient surface water removal for improved performance.
Plain aluminium shall not be acceptable.
The cooling coil shall be mounted over a full width stainless steel condensate tray.
Raise/Lower Chilled Water Valve
For control of water ow, a 3 port modulating regulating valve is tted as standard, with a 2 port option available.
0-10 Volt Chilled Water Valve
For control of water ow, a 3 port modulating regulating valve with 0-10 volt control is tted, with a 2 port option
available.
Threaded Water Pipe Connection
As an alternative to brazed water pipe connections, BSP brass male taper threaded connections shall be factory tted.
Features System Conguration
DX CW Dual Cool
Chilled Water
Chilled Water Coil –● ●
Raise/Lower Chilled Water Valve –○ ●
0-10V CW Valve –●–
2-way valve –○ ○
3-way valve with bypass –● ●
Brazed Water Pipe Connection –● ●
Threaded Water Pipe Connection –○ ○
● Standard Feature ○ Optional Feature – Not Available
Chilled Water Components
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Introduction
Features
System Conguration
Downow Upow
DX CW Dual Cool DX CW Dual Cool
Airow Components
EC Fans ●●●●●●
EC Larger Fan ○○○○○○
Front Air Discharge ○○○○○○
Rear Air Discharge ○○○○○○
Top Air Discharge –––○○○
Bottom Air Discharge ○ ○ ○ –––
3-Way Air Discharge* –––○○○
Airow Switch ●●●●●●
ISO-C-75 Return Air Filter ●●●●●●
ISO-1-60 Return Air Filter ○○○○○○
● Standard Feature ○ Optional Feature – Not Available
Airow Components
EC Direct Drive Backward Curve
Fan
Pleated Disposable Panel Filter
Electronically Commutated (EC) Fan Motor
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 plastic or 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 ecient and accurate speed control and are adjustable via the
microprocessor display keypad. The fans oer maximum airow performance while keeping sound levels to a minimum.
EC motors are DC motors with integrated AC to DC
conversion; this gives the exibility of connecting to
AC mains with the eciency and simple speed control
of a DC motor. The EC fan oers 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 eciency at full and
reduced fan speed compared to the equivalent AC fan
motor.
Standard voltage regulated (VR) fan speed controllers
oer a linear response. By comparison the EC fan is
adjusted on demand via the unit microprocessor with
precision, oering 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
*Larger DX models (Case sizes 22 and above) can only accommodate this option if tted with a 3 way plenum. Please
contact Airedale for more information.
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Introduction
Larger Fan Option
For applications where higher static air pressures are required, a larger fan size can be tted to replace the standard fan
option.
Air Discharge Options
Downow units can be congured with either top or rear supply airow matched with front, rear or base air discharge.
Upow units can be congured with base, front or rear supply airow and have the option of top, front, rear or 3-way air
discharge. If 3-way discharge is selected the conguration allows airow from front and side grilles.
Airow Switch
An adjustable dierential pressure switch activates an alarm at the control panel and protects the system against
dangerous operating conditions.
Filters
Pleated disposable panel lters are tted in a rigid frame. They conform to EN16890:2016 ISO-C-75, with higher grade
lters conforming to EN16890:2016 ISO-1-60 optional. Access to the lters is through the unit doors, with removal for
the downow units over the top of the coil and from below it for the upow units. The lters are supplied with exible tape
to enable easy insertion and removal for the downow units.As standard the microprocessor provides an alarm following
a preset run time limit being exceeded, with an optional lter change switch.
16 TM EasiCool Evo2 9921347 v.1.0_21.06.2021
Precision Air ConditioningEasiCoolTM
Introduction
Electrical
The electrical power and controls panel is situated within the cabinet and has front access for essential maintenance of
the unit. This contains major components such as:
• Mains isolator
• Circuit breakers for protection of major unit components
• Power monitoring (based on unit selection)
• Necessary contactors (based on unit selection)
• 24V transformer and controllers
• Mains and inter-connecting terminals (this includes volt-free contacts for common alarm).
The electrical power and controls panel is wired to the latest British/European standards and codes of practice.
Energy Manager
Analysis of system energy consumption can be monitored via a dedicated LCD display. Unit power information can
be monitored via the controller, allowing key information, such as real power, voltage, current and power factor to be
reviewed, as well as providing additional alarm functionality, such as phase loss.
Electrical Components
Features System Conguration
DX CW Dual Cool
Electrical
Door Interlocking Mains Isolator (4 Pole) ● ● ●
LCD Display ● ● ●
Energy Manager ○ ○ ○
Phase Monitoring Relay ○ ○ ○
Phase Rotation Relay ○ ○ ○
Fire Detection ○ ○ ○
Smoke Detection ○ ○ ○
Water Detection Tape ○ ○ ○
Water Detection Probe ○ ○ ○
● Standard Feature ○ Optional Feature – Not Available
Phase Rotation Relay
A phase sequence relay shall be tted for units containing 3 phase scroll compressors, to prevent possible damage by
running the compressor in the wrong direction.
Fire Detection
Fire detection is installed within the unit to monitor temperature and shut down the unit in the event of unusually high air
temperature and generate a controller alarm.
Smoke Detection
Supplied loose for installation on site, the unit will shut down and activate the alarm upon sensing the presence of
smoke.
Water Detection Tape
Water level tape suitable for sensing water droplets shall be supplied loose for remote mounting on site. Standard tape
length is 12.5m.
Water Detection Probe
A solid state (probe) sensor shall be supplied loose for remote mounting on site.
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Introduction
Features System Conguration
DX CW Dual Cool
Heating
Electric Heating Staged Control ○ ○ ○
Modulating Electric Heat ○ ○ ○
Humidication
Low Conductivity (Soft Water) Bottle ○ ○ ○
Standard Conductivity (Moderate/Hard Water) Bottle ○ ○ ○
High Conductivity (Very Hard Water) Bottle ○ ○ ○
Humidier Bottle ○ ○ ○
Condensate Pump ○ ○ ○
Electric Heat Case Size
15 18 22 25
6kW ○ ○ ○ ○
12kW ○ ○ ○ ○
18kW – –○ ○
Humidifcation Case Size
15 18 22 25
3kg ○ ○ ○ ○
8kg ○ ○ ○ ○
15kg – ○○○
● Standard Feature ○ Optional Feature – Not Available
Heating and Humidication
Heating
Electric Heating Staged Control
Multi-stage electric heating elements complete with auto reset overheat cut-out protection.
Modulating Electric Heat
Oers precision control between 0 - 100% via the microprocessor and auto reset overheat cut-out protection.
Humidication
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 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).
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Introduction
The supply water pressure to the humidier assembly must be between 1 - 8 barg.
CAUTION
Humidication Control Principles
In a humidier with electrodes, steam shall be produced by passing a current between electrode plates to generate heat.
The higher the current being passed between the electrodes, the greater the quantity of steam that is produced.
To modulate the rate of steam production, this system shall vary the level of water within the cylinder, thereby increasing
the immersion level of the electrodes and the current being passed between them. The more conducting area that is
available to pass current between the electrodes, the larger the amount of steam that shall be produced.
Modulated by the controller, the water level is varied so that the level of steam being produced ensures that the room
humidity set-point is continually maintained within a tight tolerance.
Optimised Lifetime
The life span of the Airedale humidication system shall be optimised by the inclusion of a water conductivity sensor into
the bottle feed. This sensor determines the conductivity level of the supply water and by using an algorithm embedded in
the software, determines the frequency that the bottle should be drained. As liquid water is boiled o into steam, mineral
deposits are left in solution increasing the conductivity of the water. To counter this, the intelligent software increases
the frequency of drain meaning that the replenishing supply water keeps the concentration of minerals diluted. By
maintaining an acceptable mineral concentration, the bottle life span is maximised.
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 dierent 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.
An overow weir is incorporated in the common ll/drain tundish. Any pressure build up in the
cylinder would be allowed to vent through the tundish to atmosphere. It is MOST IMPORTANT that
the steam distribution pipe is not damaged or kinked at any time to avoid the risk of unacceptably
high pressure building up in the electrode bottle.
CAUTION
De-humidication
(With Electric Heating and Humidication only)
Controlled by the microprocessor the de-humidication feature reduces fan speeds to increase de-humidication.
This drastically decreases the amount of time and enegry needed to reduce the room humidity to the required level.
The return temperature is monitored during de-humidication to ensure that the temperature does not fall to a critical
level. If the temperature reaches the low limit de-humidication is cancelled until the return air temperature increases.
Safe Operation of Humidier
To protect the humidier bottle from dangerous pressures in event of the steam supply pipe becoming blocked, a tundish
is installed between the water inlet solenoid and the cylinder to act as a reservoir and to feed water to the humidier inlet
manifold as required.
Condensate and Humidier
All drain trays are tted with their own trap assembly. Condensate drain may be run to waste via ordinary plastic
waste pipe. Humidier drain may be run to waste via pipe suitable for liquid temperatures of 100°C. All drain pipework
operating under gravity should be sloped away from the equipment and the gradient should be made as steep as
possible. Suitable rodding positions should be incorporated particularly if the run is long.
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EasiCoolTM
Introduction
2
4
6
8
10
12
0
5.0 9.07.0 13.0 15.011.0
Head (m)
Flow Rate (l/min)
Head (m)
0
1
2
3
4
5
6
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Flow Rate (l/min)
Condensate Pumps
Performance
The following graph illustrates the TOTAL static (head) pressure available. The system horizontal pipe losses and
vertical lift should be factored in when calculating the condensate pump performance.
The condensate pump uses 10mm (3/8”) copper tube when connecting to the discharge stub of the pump.
Non return valves should not be tted into the condensate discharge. Backow is limited due to restricted pipe
dimensions.
The discharge line from the pump should rise no more than 6 metres vertically and no more than 8
metres in total length before being interrupted with a swan neck air break and tundish.
IMPORTANT
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Introduction
General Features
Discharge Air Conguration
Forward, reverse, 3-way, top & bottom air discharge options are available, please specify at order.
Open & Enclosed Floorstand
Open or enclosed oorstands are available, complete with adjustable feet and oor tile lip. Enclosed oorstands
incorporate an air turning vane. Height of the oorstand; please specify at order.
Ceiling Duct Extension
Straight and ‘L’ shaped duct extensions up to a height of 1350 mm constructed and nished to match the unit are
available. For extensions greater than 1350 mm, please contact Airedale.
Services Side Access Gland Plate
As standard services can be routed through the gland plate in the base of the units. A gland plate can be optionally
located on the side or the base of the unit if required. Please contact Airdale for more information.
Export Packing
Units can be supplied packed inside a case to provide additional protection during transportation, (not required for
container delivery). Standard construction material is solid wood.
Sterling Board LAT (Wooden Case) Packing
Units shall be supplied complete with additional LAT corner protection and cross braces to aord extra transit protection.
Sterling board heat treated man made material shall be used (including pallet) to comply with phytosanity import
regulations (please contact Airedale for this option).
Features System Conguration
DX CW Dual Cool
General
Features
Secure Door Locks ● ● ●
Open Floorstand ○ ○ ○
Enclosed Floorstand ○ ○ ○
Ceiling Duct Extension ○ ○ ○
Condensate Pump ○ ○ ○
● Standard Feature ○ Optional Feature – Not Available
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AIREDALE EasiCool Evo2 31-98kW Precision Air Conditioner Technical Manual

AIREDALE
Brand
AIREDALE
Model
EasiCool Evo2 31-98kW Precision Air Conditioner
Category
Split-system air conditioners
Type
Technical Manual
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