AIREDALE DeltaChill DCC Series User manual

Technical Manual
DeltaChill
Air Cooled and FreeCooling Chiller
105-1110kW
R32

Introduction
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ChillersDeltaChillTM
DeltaChill Technical Manual 9758541 V1.1_06_2020
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 e󰀨 ective prevention of such risk it is necessary that the equipment is maintained in accordance with Airedale
recommendations.
ChillerGuard
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.
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 o󰀨 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.
©2019 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, as with any mechanical
or electrical equipment, care must be taken if you are to obtain the best results.
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.
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 product range within this document utilises R32 refrigerant, which requires careful attention to proper storage and
handling procedures. Use only manifold gauge sets designed for use with R32 refrigerant. Use only refrigerant recovery
units and cylinders designed for use with A2L refrigerants. 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
Allowable Temperature Range (TS) = Min -20°C* to Max 135°C**
Maximum Allowable Pressure (PS) = High Side 40.2 Barg, Low side 24.5 Barg***
*Based on the refrigerant temperature in the unit o󰀨 state in the lowest permitted ambient temperature.
**Based on the maximum allowable super heated refrigerant temperature.
***Please refer to Mechanical Data for unit speci c PS values.
Waterside
Allowable Temperature Range (TS) = Min -20°C* to Max 40°C**
Maximum Allowable Pressure (PS) = 10 Barg
*Based on the waterside temperature in the unit o󰀨 state in the lowest permitted ambient temperature.
**Based on the waterside temperature in the unit o󰀨 state in the highest permitted ambient temperature.
The waterside temperature must not exceed the TS of +40°C.
The PRV will release at water temperatures >= 42.2°C.
Pressure System Safety Regulations 2000
Refrigeration assemblies/systems may constitute a Pressure System as de ned in the Pressure System Safety
Regulations 2000.
Global Warming Potential
The R32 refrigerant has a GWP of 675 (based on EN378-1:2016, 100 year life)
Ecodesign Directive 2009/125/EC
The product range within this document is designed in accordance to the European Ecodesign Directive 2009/125/EC.
The appendix at the rear section of the manual gives the product compliance metrics. Products sold outside of the EU
are exempt from this directive.
When working with any air conditioning units ensure that the electrical isolator is switched o󰀨 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.
CAUTION

Introduction
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Chillers
DeltaChillTM
DeltaChill Technical Manual 9758541 V1.1_06_2020
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, as with any mechanical
or electrical equipment, care must be taken if you are to obtain the best results.
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.
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 product range within this document utilises R32 refrigerant, which requires careful attention to proper storage and
handling procedures. Use only manifold gauge sets designed for use with R32 refrigerant. Use only refrigerant recovery
units and cylinders designed for use with A2L refrigerants. 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
Allowable Temperature Range (TS) = Min -20°C* to Max 135°C**
Maximum Allowable Pressure (PS) = High Side 40.2 Barg, Low side 24.5 Barg***
*Based on the refrigerant temperature in the unit o󰀨 state in the lowest permitted ambient temperature.
**Based on the maximum allowable super heated refrigerant temperature.
***Please refer to Mechanical Data for unit speci c PS values.
Waterside
Allowable Temperature Range (TS) = Min -20°C* to Max 40°C**
Maximum Allowable Pressure (PS) = 10 Barg
*Based on the waterside temperature in the unit o󰀨 state in the lowest permitted ambient temperature.
**Based on the waterside temperature in the unit o󰀨 state in the highest permitted ambient temperature.
The waterside temperature must not exceed the TS of +40°C.
The PRV will release at water temperatures >= 42.2°C.
Pressure System Safety Regulations 2000
Refrigeration assemblies/systems may constitute a Pressure System as de ned in the Pressure System Safety
Regulations 2000.
Global Warming Potential
The R32 refrigerant has a GWP of 675 (based on EN378-1:2016, 100 year life)
Ecodesign Directive 2009/125/EC
The product range within this document is designed in accordance to the European Ecodesign Directive 2009/125/EC.
The appendix at the rear section of the manual gives the product compliance metrics. Products sold outside of the EU
are exempt from this directive.
When working with any air conditioning units ensure that the electrical isolator is switched o󰀨 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.
CAUTION

Introduction
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ChillersDeltaChillTM
DeltaChill Technical Manual 9758541 V1.1_06_2020
Safe Operating Limits
The chillers in this range have operating limits set to ensure that the R32 refrigerant does not become unstable. The unit
is designed exclusively for open air use and access should be limited to supervised or authorised personnel only. The
installation of the unit is subject to various design aspects which must be adhered to, as these ensure the safety and
e󰀩 ciency of operation.
Flammability
In the event of a leak the combination of the following 3 operating conditions detailed in the  re triangle MUST be
avoided at all times. Failure to do this could cause a  re.
O
X
YG
E
N
H
E
A
T
FUEL
A CONCENTRATION OF THE REFRIGERANT IN AIR
> LFL (LOWER FLAMMABILITY LEVEL) AND
< UFL (UPPER FLAMMABILITY LEVEL)
14 Vol.% TO 31 Vol.%
EXISTANCE OF AN IGNITION
SOURCE WITH AN IGNITION ENERGY
>MINIMUM IGNITION ENERGY
(30-100mJ)
This refrigerant is classi ed as lower  ammability according to the international standard for
refrigerant designation and safety classi cation, ISO 817:2014.
CAUTION
No smoking or NAKED FLAME
CAUTION
It is important that the ATEX rated panel ventilation fan is not facing any potential sources
of ignition and is kept free from obstruction at all times. In the event of a leak, the ventilation
fan’s purpose is to reduce a potentially  ammable concentration of refrigerant in the air from
the compressor enclosure to atmosphere. Provision must be taken to ensure that any leaked
refrigerant is not allowed to become stagnant within containment systems or drains.
CAUTION
Site risk assessments, including  re protocol, must be in place and must include clear safety
instructions describing what to do in the event of a  re. Such risk assessments must be maintained
by the site operator and be available in the location where the equipment is installed.
R32 can produce toxic and corrosive gasses when burnt such as hydrogen  uoride. Any burning
refrigerant should not be approached and the appropriate steps, as outlined in the site risk
assessment, should be followed.

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DeltaChillTM
DeltaChill Technical Manual 9758541 V1.1_06_2020
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).
●Additional trace heating is provided for interconnecting pipework.
(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/EU 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
Ecodesign 2009/125/EC
To comply with these directives appropriate national & harmonised standards have been applied. These are listed on the
Declaration of Conformity, supplied with each product.
Occupancy Note
When placing a chiller the access category for the surrounding area needs to be classi ed in accordance with
EN 378-1:2016 section 5.1.1.
Access to the chiller should be limited to supervised or authorised access only (access categories B and C) as
described in EN378-1:2016 Table 4. This access level needs to be con rmed by the end user, and the location within
which the product is to be installed needs to be de ned. EN 378-1:2016 section 5.3 describes the four main types of
location and the hazards associated with each. This range has been designed to be installed in an open air environment
(location class III) and shall not be applied in alternative locations.
As an air cooled Chiller typically in an ‘Authorized Access’ installation, located in open air, ‘Class III’ location,
EN378-1:2016 Table C.2 states that there is ‘No charge restriction’ for these systems using R32 (A2L) refrigerant.

Introduction
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DeltaChill Technical Manual 9758541 V1.1_06_2020
Contents
Nomenclature 8
Introduction 8
Unit Overview 10
Range Layout 12
Refrigeration 14
Electrical 16
Mechanical 18
Controls 20
Condenser Fans 23
Waterside 24
Design Features and Information 26
Specic Heat Capacity 26
Minimum System Water Volume Calculation 26
Operating Limits 27
Measurement of Sound Data 28
Pressure Relief Valve Discharge Piping 29
Water System 29
Installation 30
Flow Schemes 30
Refrigeration Schematic 32
Technical Data 34
Mechanical Data 34
DCC Regular Quiet 34
DCC Extra Quiet 45
DCF Regular Quiet 52
DCC Extra Quiet 62
Sound Data 68
DCC 68
DCF 72

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DeltaChillTM
DeltaChill Technical Manual 9758541 V1.1_06_2020
Contents
Hydronic Data 76
Evaporator Pressure Drop References 76
Evaporator Pressure Drop - 100% Water 77
Evaporator Pressure Drop - 20% Ethylene Glycol 79
Pump Performance Curves 81
Pump Performance Curve References 81
Pump Performance Curves 82
Installation Data 87
Masses & Centre of Gravity 87
Unit Lifting 94
Dimensions 96
Positioning 97
Airow & Maintenance Clearances 97
Anti Vibration Mounting (Optional) 98
Electrical 100
Interconnecting Wiring 101
Operation 102
Pre Start Checks 102
pLAN Termination 102
Appendix - Ecodesign 103
DCC Regular Quiet 104
DCC Extra Quiet 120
DCF Regular Quiet 130
DCF Extra Quiet 144
After Sales Warranty 154

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DeltaChill Technical Manual 9758541 V1.1_06_2020
Nomenclature DC F xxx T R- 21 L W W W
DC DeltaChill
F
C
F = FreeCool Chiller
C = Air Cooled Chiller
XXX Nominal Capacity (kW/10)
D
T
Number of Circuits
Dual Circuit
Triple Circuit
R-
X-
Noise Variant
Regular Quiet
Extra Quiet
04 - 21 Number of Fans
J - S Evaporator Type
B - W Compressor Conguraon Circuit 1
C - W Compressor Conguraon Circuit 2
X - 0 Compressor Conguraon Circuit 3; 0 if N/A
Introduction
The Airedale range of DeltaChill air cooled and free cooling liquid chillers covers the nominal capacity range 105 -
1110kW. The range is available with many optional variations, including Quiet and Extra Quiet sound level variants.
Attention has been placed on maximising the unit’s performance while keeping footprint to an absolute minimum. The
DeltaChill range has been expertly engineered and managed using the best available technology and components, to
optimise performance and minimise environmental impact. DeltaChill is ideal for cooling a wide range of applications
involving medium and diverse cooling loads. Conguration exibility enables selection of the optimum model in terms of
capacity, number of fans, energy e󰀩ciency and sound.

Introduction
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DeltaChillTM
DeltaChill Technical Manual 9758541 V1.1_06_2020
Free Cooling Operation
The DeltaChill chiller has been designed to provide the cooling load required whilst optimising energy e󰀩ciency at all
times and as such will take advantage of free cooling whenever available. If the free cooling available cannot satisfy the
required full cooling load, direct expansion cooling is used to supplement the output.
In high ambients where free cooling is not available the fan speed modulates in the conventional manner to maintain
an optimised head pressure. Free cooling is initiated wherever the outdoor ambient is 2K less than the return water
temperature. During concurent cooling mode the condensing temperature is constantly monitored and intelligently kept
within the compressor envelope to allow the fans to run as fast as possible and therefore achieve the most free-cooling
without having a negative impact on compressor integrity.
In ambients where the free cooling coil is capable of meeting the full cooling demand, the condenser fans are modulated
to provide the desired duty. The condenser fans are capable of being modulated between 15-100% of airow to maintain
the supply water temperature. During periods where the condenser fan speed has been reduced to a minimum, the
supply water temperature will then be controlled by the 3 way valve.
Free Cooling vs. Mechanical Cooling
0
100
200
300
400
500
600
Ambient Hours
Ambient °C
57% Full Free
Cooling
40% Concurrent
Free Cooling
3% Full DX

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ChillersDeltaChillTM
DeltaChill Technical Manual 9758541 V1.1_06_2020
Unit Overview
Airow
• EC Condenser Fans
• AC Condenser Fans
• Optional High Airow EC Condenser Fans
• No Discharge Plenum
• 300mm Fan Discharge Plenum
• 800mm Extended Height Fan Discharge Plenum
Electrical Panel
• Single Point 3 Phase Isolation
• UltraCap Power Backup
• Optional Control Panel Heater
• Emergency Stop
• Optional Panel Ventilation
• Optional Power Monitoring
• Optional Weatherproof Rain Hood
Controls
• HelixTM Microprocessor
• Leak Detection
• Intelligent Head Pressure Control

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DeltaChill Technical Manual 9758541 V1.1_06_2020
Coils
• Epoxy Coated Microchannel Condenser Coils
• RTPF FreeCooling Coils
Waterside
• Di󰀨erential Pressure Sensor
• Flow Switch
• Pump Interlock
• Water Filter
• Various Pump Options
• Pad or Immersion Heater
• Grooved and Clamped Type Connections
Refrigeration
• Scroll Compressors
• R32 Optimised Brazed Plate or Shell and Tube Evaporator
• Liquid and Discharge Shut O󰀨 Valves
• Liquid Line Sight Glass
• Dual Pressure Relief Valves

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DeltaChill Technical Manual 9758541 V1.1_06_2020
Range Layout
4 Fan Units
DCC 105-260kW
DCF 115-170kW
8 Fan Units
DCC 210-455kW
DCF 230-455kW
9 Fan Units
DCC 485kW
DCF 535kW
10 Fan Units
DCC 330-575kW
DCF 360-630kW
11 Fan Units
DCC 480-625kW
DCF 530-675kW
12 Fan Units
DCC 435-625kW
DCF 465-695kW
13 Fan Units
DCC 490-685kW
DCF 540-770kW
6 Fan Units
DCC 110-355kW
DCF 120-290kW

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DeltaChillTM
DeltaChill Technical Manual 9758541 V1.1_06_2020
15 Fan Units
DCC 625-975kW
DCF 690-1070kW
16 Fan Units
DCC 680-690kW
DCF 760-780kW
17 Fan Units
DCC 630-765kW
DCF 695-845kW
18 Fan Units
DCC 640-1000kW
DCF 710-1100kW
19 Fan Units
DCC 700kW
DCF 780-790kW
20 Fan Units
DCC 770kW
DCF 845-855kW
21 Fan Units
DCC 845-1010kW
DCF 915-1110kW
14 Fan Units
DCC 565-765kW
DCF 610-835kW
Condenser fan layout may vary with unit conguration.

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DeltaChill Technical Manual 9758541 V1.1_06_2020
Refrigeration
Features
DCCxxxDR
DCCxxxDX
DCFxxxDR
DCFxxxDX
DCCxxxTR
DCCxxxTX
DCFxxxTR
DCFxxxTX
Refrigeration
Full Operating Charge of R32 ●●●●●●●●
Scroll Compressor Arrangement ●●●●●●●●
Dual Refrigeration Circuits ● ● ● ● ––––
Triple Refrigeration Circuits – – – – ●●●●
R32 Optimised Evaporator ●●●●●●●●
Microchannel Condenser Coils with e-coat ●●●●●●●●
Ventilated Compressor Enclosure ○●○●○●○●
Electronic Expansion Valves ●●●●●●●●
Liquid Line Sight Glass ●●●●●●●●
Liquid and Discharge Line Ball Valve ●●●●●●●●
Large Capacity Filter Drier ●●●●●●●●
Manual Reset High Pressure Switch ●●●●●●●●
Auto Reset Low Pressure Switch (LP Via Microprocessor) ●●●●●●●●
Suction and Liquid Pressure Transducers ●●●●●●●●
Compressor Minimum Di󰀨erential Protection ●●●●●●●●
Dual Maintainable Pressure Relief Valve ●●●●●●●●
Refrigerant Leak Detection ●●●●●●●●
FreeCooling Capability – – ● ● – – ● ●
●Standard Features ○Optional Features –Features Not Available
Compressor
Scroll compressors comprising:
●Internal motor protection
●Internal pressure relief
●Non return valve
●External discharge temperature protection
●Oil sight glass
A liquid line sight glass is tted to give an indication of the state of the refrigerant within the system. If the sight glass
becomes yellow it’s an indication that the lter drier requires changing. Each Tandem / Trio set has an oil equalisation
line. The compressors are mounted to the rigid galvanised heavy duty sub-frame with the use of vibration reducing
isolation.
Compressor Staging
The sequence of the compressor staging has been engineered to optimise the units ESEER performance.
R32 Optimised Evaporator
The R32 optimised evaporator allows for e󰀨ective heat transfer between media. Each heat exchanger is insulated with
closed cell polyurethane foam to Class 1 re rating. A heater is tted to each evaporator and will protect against freezing
in ambient temperatures as low as 30°C, subject to the freeze protection policy. Internal water pipework is trace heated
and connections for external trace heating are available.
Brazed plate evaporators use a pad heater and the shell and tube evaporators utilise immersion heaters.
Condenser Coils
Large surface area coils utilise micro channel coil technology and are ideally positioned to optimise airow and heat
transfer.

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DeltaChillTM
DeltaChill Technical Manual 9758541 V1.1_06_2020
Refrigerant Leak Detection
A factory calibrated leak detection system shall be tted as standard. If the unit includes a compressor enclosure, a
refrigerant sensor shall be tted within this enclosure and will raise an alarm on detection of refrigerant gas. The alarm
state will activate an ATEX certied ventilation fan within the enclosure and the unit will immediately shut down, closing
the EEV and actuating the isolation contactor to disable all non-essential electrical circuits. The unit will remain turned o󰀨
(not pumped down) until it is manually reset; the unit can only be reset when the refrigerant level is below the trip setting.
HP / LP Transducers and Switches
HP / LP Transducers and switches are tted to the unit to protect against high or low pressures.
High pressure switches are manual reset.
Dual Pressure Relief Valve
A 3-way dual shut-o󰀨 valve that incorporates 2 relief valve assemblies per circuit. The valve allows the maintenance of
individual pressure relief valves without the need for refrigerant evacuation. The pressure relief valve
protects the evaporator.
Head Pressure Control
Electronic head pressure controllers are tted which modulate the fan speed to maintain a constant condensing
pressure, allowing the system to operate satisfactorily in ambient temperatures as low as -30°C.
Head pressure can be set, monitored and values viewed at the microprocessor display.
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.
Key Cooling Cycle @ 22°C ambient with a conventional TEV tted.
Cooling cycle @ 22°C ambient, demonstrating a typical EEV condensing
temperature taking full advantage of lower ambient air temperatures (below
30°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
Filter Driers
Maintainable lter driers are tted with replaceable cores, to protect the system from moisture, acids and solid
contaminants. They help to maintain system e󰀩ciency and prevent premature compressor failure.
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) can typically be seen at lower ambient conditions.
The Mollier diagram shown below helps to illustrate how this increase in e󰀩ciency is achieved.

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DeltaChill Technical Manual 9758541 V1.1_06_2020
A weatherproof electrical power and controls panel is situated at the end of the unit and contains:
• Individual mains power isolation for each circuit’s compressors.
• Separate electrical isolation for fans (shell and tube evaporator units only).
• Dedicated bus-bar chamber for connection of incoming 3 phase and earth mains power supply.
• Emergency stop tted to controls compartment door.
• Separate, fully accessible controls compartment, allowing adjustment of set points while the unit is operational.
• Circuit breaker for protection of all major unit components.
• Phase rotation relay incorporating phase loss protection.
• Electrical power and control panels wired to the latest European standards and codes of practice.
Mains power supply is three phase no neutral for standard units with a separate 230V 1ph 50Hz permanent supply,
required for the controls and safety features; refer to interconnecting wiring for more information.
For units with dual power ATS option a three phase and neutral supply is required, powering the entire unit including
controls; refer to interconnecting wiring for more information.
Electrical terminals for external evaporator pipe work trace heating (230V / 500 Watt) are provided, the external trace
heating is tted by others.
Control Panel Light
A control panel light can be tted as an option to shell and tube evaporator units to enable maintenance to be carried out
during poor light conditions.
Mains Cable Entry
Brazed plate evaporator units have a dedicated bus bar chamber, with entry from either left or right. Shell and tube
evaporator units allow main cable entry from either side of the electrical control panel.
Maximum cable gland sizes
Single 1 x M75S
Twin 2 x M63S
Electrical
General Information
Features
DCCxxxDR
DCCxxxDX
DCFxxxDR
DCFxxxDX
DCCxxxTR
DCCxxxTX
DCFxxxTR
DCFxxxTX
Electrical
Phase Rotation Protection ●●●●●●●●
Electronic Soft Start ○○○○○○○○
Power Monitoring ○○○○○○○○
Single Point Isolation ○○○○○○○○
Power Factor Correction* ○○○○○○○○
Maintenance Socket* ○○○○○○○○
Low Ambient Kit* ○○○○○○○○
●Standard Features ○Optional Features –Features Not Available
* Model dependant, please contact Airedale.
Phase Rotation Protection
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.
Electronic Soft Start
The electronic soft start enables the chiller compressor motor to be ramped to speed with the minimum full load current.
Further benets include removal of nuisance tripping, supply voltage dips and motor overheating.
Power Monitoring
A power meter shall be tted to the unit. Voltages, currents and power inputs can be monitored and recorded giving
power usage of the chiller. Current transformers are tted to the unit’s incoming supply.
Single Point Isolation
Single point isolation shall be tted as a standard feature. The feature is however available to be removed upon request,
subject to your own 3 phase unit mains isolator.

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DeltaChill Technical Manual 9758541 V1.1_06_2020
Power Factor Correction
Compressor Power Factor Correction - Brazed Plate Evaporator Units
When applied to the motors of each compressor, the compressor power factor is controlled to a minimum operating
value of 0.95 at the full operating capacity. This satises many supply authorities that may impose surcharges on
equipment with power factor less than 0.95.
Automatic Power Factor Correction - Shell and Tube Evaporator Units
The automatic power factor correction shall be tted to the Chillers electrical distribution system. This feature will provide
automatic regulation of unit power factor, taking into account all AC inductive load types in the form of compressors, AC
fans and AC pumps.
The power factor correction system consists of a PFC regulator and a number of dissimilar sized capacitors that are
switched in by means of contactors. The regulator type used has 6 staged outputs that switch in a binary fashion
resulting in a total number of 64 unique capacitor step values.
During operation the PFC regulator measures the reactive power drawn by the unit and then dependant on the
instantaneous unit load and user congurable target PF value, automatically switches in the necessary capacitor stages
to achieve the desired unit target PFC. Factory set to a 0.98PF.
Ultracap Uninterrupted Power Supply
The Ultracap module is an external backup device for the EVD Evolution used to close the expansion valve. The module
guarantees temporary power to the EVD Evolution in the event of power failures, for enough time to immediately close
the connected electronic valve. It avoids the need to install a solenoid valve in the refrigerant circuit or use the battery
backup module.
Ultracap storage capacitors (EDLC = Electric Double Layer Capacitor) are recharged independently by the module.
Ultracap capacitors ensure reliability in terms of much longer component life than a module made with lead batteries;
the life of the Ultracap module is at least 10 years. In addition, the special safety and environmental precautions
required when using lead batteries are not necessary for the Ultracap module.
Dual Power - Automatic Transfer Switch (ATS)
The DeltaChill range has been designed with optional dual power supply capability, so that in the event of a power
failure the supply switches from primary utility to an alternative power supply (such as second utility or generator)
automatically. A dual power supply changeover switch shall be provided to enable continuous power to the DeltaChill in
order to reduce unit downtime and therefore loss of cooling to a minimum. For the dual power supply feature to operate
e󰀨ectively, the two incoming power supplies must have the same voltage and frequency. During changeover of power
there is an short interval with no power, an Ultracap module is employed to temporary power the controller through the
power supply changeover, allowing for fast reinstatement of cooling following successful power supply changeover.
Supply priority settings can be adjusted via unit’s control terminal rail. Switch position status indication is available, via
volt free contact, to give the end user visibility of which position the switch is currently in i.e. A or B.
EC fans and Inverter loads cannot be corrected by the PFC capacitors. The overall system power
factor may vary based on operating conditions.
IMPORTANT
Maintenance Socket
A 10 A single phase maintenance socket is available located within the control panel. This socket enables UK plugs to
be connected.
Control Panel Low Ambient Protection
Supplementary heating can be o󰀨ered to the control panel to ensure components such as LCD displays operate in low
ambient conditions.

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ChillersDeltaChillTM
DeltaChill Technical Manual 9758541 V1.1_06_2020
Anti Vibration Mounts - Spring Type
Specially selected spring vibration isolators shall be supplied loose for on-site tting to the base frame of each unit. The
isolators shall be suitable for tting to structural steelwork providing the surface is level and of su󰀩cient strength where a
high level of vibration elimination is required.
Mechanical
Construction
The base is fabricated from galvanised steel to ensure a rigid, durable weatherproof construction. The superstructure is
manufactured from galvanised sheet steel coated with epoxy baked powder paint to provide a durable and weatherproof
nish. The standard unit colour is Light Grey (RAL 7035). Compressors and evaporators are mounted on a rigid
galvanised heavy-duty sub frame and the fully weatherproof electrical panels are situated at one end of the unit.
Extended Discharge Air Plenum - Condenser Fan
Constructed from galvanised sheet steel coated with epoxy baked powder paint, this plenum directs discharge air
vertically, thus limiting air re-circulation and provides a degree of acoustic reduction in the horizontal plane. For details
please contact Airedale. Standard unit colour is Light Grey (RAL 7035). For further details refer to Dimensional Data.
Compressor Enclosure
Optional compressor enclosure o󰀨ers improved resistance to dust over the standard compressor’s IP54 housing. The
weatherproof compressor enclosure is recommended for installations with particularly adverse dusty environments.
Compressor enclosures are tted with forced ventilation as standard, which activates if a leak of refrigerant is detected.
Lifting Eye Bolts/Lifting Lugs
Lifting eye bolts/lifting lugs shall be tted for use with either slings or shackles.
Anti Vibration Mounts - Pad Type
Pad vibration isolators can be supplied loose for on-site tting to the base frame of each unit. The isolators are suitable
for tting to structural steelwork providing the surface is level and of su󰀩cient strength where a moderate degree of
vibration elimination is required.
Features
DCCxxxDR
DCCxxxDX
DCFxxxDR
DCFxxxDX
DCCxxxTR
DCCxxxTX
DCFxxxTR
DCFxxxTX
General
No Plenum ●●●●●●●●
300mm Fan Discharge Plenum ○○○○○○○○
800mm Extended Height Fan Discharge Plenum ○○○○○○○○
Lifting Lugs/Eye Bolts ●●●●●●●●
Compressor Enclosure - Standard Insulation ○●○●○●○●
Compressor Enclosure - Proled Insulation ○○○○○○○○
Compressor Acoustic Jackets* ○○○○––––
Anti-vibration Pad Mounts ○○○○○○○○
Anti-vibration Spring Mounts ○○○○○○○○
Rain hood* ○○○○○○○○
●Standard Features ○Optional Features –Features Not Available
* Model dependant, please contact Airedale.

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DeltaChillTM
DeltaChill Technical Manual 9758541 V1.1_06_2020
Weatherproof Rain Hood
The waterproof rain hood provides shelter for those working at the control panel whatever the weather and reduces the
risk of sensitive electrical components getting wet. The electrical panels are fully weatherproof when closed.
Brazed Plate Evaporator units Shell and Tube Evaporator units

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DeltaChill Technical Manual 9758541 V1.1_06_2020
Controls
Features
DCCxxxDR
DCCxxxDX
DCFxxxDR
DCFxxxDX
DCCxxxTR
DCCxxxTX
DCFxxxTR
DCFxxxTX
Controls
Helix™ Microprocessor Controller ●●●●●●●●
Optimised Head Pressure Control ●●●●●●●●
Emergency Stop ●●●●●●●●
Remote Setpoint Adjust ○○○○○○○○
Sequence Controller ○○○○○○○○
BMS Interface Card ○○○○○○○○
●Standard Features ○Optional Features –Features Not Available
Helix™ Microprocessor Controller
As standard, the Helix™ microprocessor controller can provide 2, 3 or 4 stages of capacity control, dependent upon
model type.
Optionally, the controller is designed to provide capabilities for:
●Building Management Systems.
●Networking.
● Sequencing (Master/Slave and Run/Standby) to meet all your system requirements, please conrm at time of
order. Please contact Airedale for further details.
Optimised Head Pressure Control
The fan’s speed is modulated to maintain an optimised condensing pressure, ensuring the unit is always operating in the
most e󰀩cient way and down to temperatures as low as -20°C. Head pressure can be monitored and values viewed at
the microprocessor display.
Remote Setpoint Adjust
Allows the chilled water setpoint to be adjusted via an external 0-10V signal.
Sequence Controller
For the e󰀩cient temperature and capacity operation of multiple units on a single site, the sequence controller will permit
interlinked operation of the complete system thereby providing optimum temperature control and minimum power
consumption. Included within this package is a site visit by Airedale Controls Specialists to set up multiple unit sequence
control.
BMS Interface Card
BMS cards provide an interface between the Airedale unit and the majority of BMS systems, they can be selected and
factory tted as a standard option (please contact Airedale). A wide range of protocols can be accommodated which
include the following standard protocols; ModBus; Carel; SNMP; LonWorks; Metasys and BACnet.
Alternatively Airedale’s Ethernet TCP/IP based plug-in card, the pCOWEB, o󰀨ers BACnet IP, Modbus IP and SNMP
features.
When adding to an existing controls scheme, please consult Airedale Controls to ensure strategy
compatibility.
CAUTION