AIREDALE ULTIMA URAC75D User manual

Ultima™Remote Air Cooled
Air Cooled Chiller
75kW - 450kW
TECHNICAL MANUAL

ULTIMA™REMOTE AIR COOLED
Chillers
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Technical Manual : Part No 6259485 V1.15.0_08_2018
About Airedale Products & Customer Services
WARRANTY
All AIAC products or parts (non consumable) supplied for installation within the UK mainland and
commissioned by an AIAC engineer, carry a full Parts & Labour warranty for a period of 12 months
from the date of commissioning or 18 months from the date of despatch, whichever is the sooner.
Parts or Equipment supplied by AIAC for installation within the UK or for Export that are properly
commissioned in accordance with AIAC standards and specification, not commissioned by an AIAC
engineer; carry a 12 month warranty on non consumable Parts only from the date of commissioning
or 18 months from the date of despatch, whichever is the sooner.
Parts or equipment installed or commissioned not to acceptable AIAC standards or specification
invalidate all warranty.
Warranty is only valid in the
event that
In the period between delivery and commissioning the equipment: is properly protected & serviced as
per the AIAC installation & maintenance manual provided where applicable the glycol content is
maintained to the correct level.
In the event of a problem being reported and once warranty is confirmed as valid under the given
installation and operating conditions, the Company will provide the appropriate warranty coverage (as
detailed above) attributable to the rectification of any affected Airedale equipment supplied (excluding
costs for any specialist access or lifting equipment that must be ordered by the customer).
Any spare part supplied by Airedale under warranty shall be warranted for the unexpired period of the
warranty or 3 months from delivery, whichever period is the longer.
To be read in conjunction with the Airedale Conditions of Sale - Warranty and Warranty Procedure,
available upon request.
CAUTION
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: [e-mail] or telephone:
Customer Service s
UK Sales Enquiries
+ 44 (0) 113 238 7789
[e-mail]
International Enquiries
+ 44 (0) 113 239 1000
[e-mail]
Spares Hot Line
+ 44 (0) 113 238 7878
[e-mail]
Airedale Service
+ 44 (0) 113 239 1000
[e-mail]
Technical Support
+ 44 (0) 113 239 1000
[e-mail]
Training Enquiries
+ 44 (0) 113 239 1000
[e-mail]
For information, visit us at our Web Site: www.airedale.com
AIAC 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. AIAC 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 AIAC 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
AIAC Ltd.
2018 Airedale International Air Conditioning Limited. All rights reserved. Printed in the UK.

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Contents
Warranty 2
CUSTOMER SERVICES 2
HEALTH AND SAFETY 5
ENVIRONMENTAL CONSIDERATIONS 6
Freeze Protection 6
Environmental Policy 6
GENERAL DESCRIPTION 7
Unit Identification 7
Introduction 7
Standard Features 7
Optional Extras –Energy Saving 9
Optional Extras –General 10
DESIGN FEATURES & INFORMATION 11
Energy Efficiency 11
Minimum System Water Volume Calculations 12
Control Scheme Features 15
PERFORMANCE DATA 16
Capacity Data 16
Operating Limits 17
Glycol Data 17
Waterside Pressure Drops 18
Sound Data 19
GENERAL SPECIFICATION 21
Mechanical Data 21
Electrical Data 24
Dimensions 27
INSTALLATION DATA 29
Unit Lifting 29
Positioning 30
Anti Vibration Mounting (Optional) 31
Water System 32
Electrical 33
Interconnecting Wiring 33
CONDENSER SPECIFICATION 35
General Specification 35
Dimensions 37
Weights 37
Unit Lifting 38
Positioning 38
ECODESIGN APPENDIX 39
URAC75D, URAC100D, URAC125D, URAC150D, URAC175D 40
URAC200D, URAC225D, URAC240D, URAC250D, URAC270D 41
URAC300D, URAC330D, URAC360D, URAC400D, URAC450D 42
URAC75DQ, URAC100DQ, URAC125DQ, URAC150DQ, URAC175DQ 43
URAC200DQ, URAC225DQ, URAC240DQ, URAC250DQ, URAC270DQ 44
URAC300DQ, URAC330DQ, URAC360DQ, URAC400DQ, URAC450DQ 45
URAC75DSQ, URAC100DSQ, URAC125DSQ, URAC150DSQ, URAC175DSQ 46
URAC200DSQ, URAC225DSQ, URAC240DSQ, URAC250DSQ, URAC270DSQ 47
URAC300DSQ, URAC330DSQ, URAC360DSQ, URAC400DSQ, URAC450DSQ 48

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Front Cover: Model URAC250DQ/DSQ Shown

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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.
CAUTION
1 Installation, service and maintenance of Airedale equipment should only be
carried out by technically trained competent personnel.
CAUTION
2 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.
3 Also ensure that there are no other power feeds to the unit such as fire alarm
circuits, BMS circuits etc.
4 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.
5 The refrigerant used in this range of products is classified under the COSHH
regulations as an irritant, with set Workplace Exposure Levels (WEL) for
consideration if this plant is installed in confined or poorly ventilated areas.
6 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 Remote air cooled chiller uses R407C refrigerant which is a high pressure
refrigerant. It requires careful attention to proper storage and handling procedures.
Use on manifold gauge sets designed for use with R407C refrigerant. Use only
refrigerant recovery units and cylinders designed for high pressure refrigerants.
R407C 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.
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.

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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 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 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).
Additional trace heating is provided for interconnecting pipework.
(1) Referrer 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)
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.
Maximum and Minimum Operation Temperature (TS) and Pressure (PS)
Refrigeration
Allowable Temperature Range (TS) = Min -20°C* to Max 120°C**
Maximum Allowable Pressure (PS) = High Side 26.0 Barg
*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.
Ecodesign
Directive
2009/125/EC
Units within this range are that are not Ecodesign compliant can still be used in process
applications that are above >12°C supply water temperature, as these fall outside the
Ecodesign parameters. Products sold outside of the EU are exempt from this directive.
Please refer to your Airedale account manager for full details.

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General Description
UNIT IDENTIFICATION
REMOTE AIR COOLED LIQUID CHILLER
URAC
Ultima Remote Air Cooled Chiller
75 –450
Model Size (Expressed as Nominal Cooling in kW)
D
Double Circuit - Standard Chiller
DQ
Double Circuit - Quiet Chiller
DSQ
Double Circuit - Super Quiet Chiller
Example
URAC250DQ
INTRODUCTION
The Airedale range of Ultima Remote Air Cooled liquid chillers covers the nominal
capacity range 75kW to 450kW in 45 model sizes incorporating Standard D, Quiet DQ
and Super Quiet DSQ variations.
Attention has been placed on maximising the unit’s performance while keeping the sound
and vibration levels and footprint to an absolute minimum.
The range has been specifically designed for plant room installations.
A matching range of Air Cooled Condensers is available to complement the Remote Air
Cooled Liquid Chiller, please refer to the Air Cooled Condenser Specification.
REFRIGERANTS
The range has been designed and optimised for operation with the ozone benign
R407C refrigerant.
STANDARD FEATURES
Standard Chiller
- D
The Standard Ultima Air Cooled Remote Chiller comes complete with:
Microprocessor Control
Evaporator Pad Heater
Multiple Scroll Compressors
Plate Evaporator
Connections to Remote Condenser
Dual Independent Refrigeration Circuits
Electronic Expansion Valve(s)
Connections for External Trace Heating (240V/500W available)
A set of 4 M24 collared eye bolts to BS4278
Quiet Chiller
- DQ
With the benefits of the Standard range, the Quiet chiller is supplied with an acoustic
package, which incorporates:
Compressor enclosure lined with Acoustic material
Super Quiet Chiller
- DSQ
With the benefits of the Standard range, the Super Quiet chiller is supplied with a Quiet
acoustic package, which incorporates the following to become one of the quietest
chillers available:
Compressor enclosure lined with 40mm Acoustic material

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General Description
STANDARD FEATURES
Construction
The base and superstructure are fabricated from galvanised steel to ensure a tough,
durable, weatherproof construction.
Unit panels are manufactured from galvanised sheet steel coated with epoxy baked
powder paint to provide a durable and weatherproof finish.
Standard unit colour is Light Grey (RAL 7035).
Compressors and evaporator are mounted on a rigid galvanised heavy-duty frame. Fully
locked electrical panels are situated at one end of the unit. Access to the compressors is
via end panels adjacent to the electrical control panel.
A set of 4 M24 collared eye bolts to BS4278 are supplied.
Evaporator
Stainless steel high efficiency brazed plate heat exchanger(s) will allow optimum heat
transfer between media. Each heat exchanger is insulated with closed cell polyurethane
foam to Class 0 fire rating.
Water inlet and outlet connections suit “Victaulic” type pipe and coupling assembly
(counter-pipes and clamps supplied as an optional extra).
A pad heater is fitted to the evaporator and will protect against freeze up in ambient
temperatures as low as -20°C.
Compressor
Tandem / Trio scroll compressors comprising 2/3 scroll compressors linked to provide 1
refrigeration circuit.
Each compressor includes internal motor protection, internal pressure relief, non return
valve, discharge temperature protection and sight glass. Each compressor is equipped
with oil heater to guard against oil foaming on start up.
Each Tandem / Trio has an oil equalisation line.
The compressors are mounted to the rigid galvanised heavy duty sub-frame with the use
of vibration reducing isolation.

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General Description
STANDARD FEATURES
Refrigeration
Each refrigeration circuit is supplied with the following:
Full operating charge of R407C
Electronic expansion valve
Liquid line ball valve
Discharge line ball valve
Large capacity filter drier with replaceable cores
Liquid line sight glass
Low pressure switch with manual reset via microprocessor controller
High pressure switch with manual reset
Suction and liquid pressure transducers
Pressure relief valve with integral rupture disc and indicator gauge
Controls
microprocessor controller can provide 4-6 stages of capacity control,
dependent upon model type, as standard. The controller incorporates full Building
Management System capabilities, full details can be found in the Controls section.
Electrical
Dedicated weatherproof electrical power and controls panels are situated at the end of
the unit and contain:
Separate, fully accessible, controls compartment, allowing adjustment of control
set points whilst the unit is operational
Circuit breakers for protection of all major unit components
Separate, permanent supply for controls/trace heating, 230v/50Hz/1ph
The electrical power and control panel is wired to the latest European standards
and codes of practice
Separate door locking electrical isolation for each mains compartment
OPTIONAL EXTRAS –ENERGY SAVING
Power Factor Correction
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
satisfies many supply authorities that may impose surcharges on equipment with power
factor less than 0.95.

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General Description
OPTIONAL EXTRAS –GENERAL
Anti Vibration Mounts
(Spring Type)
Spring vibration isolators can be supplied loose for on site fitting to the base frame of
each chiller unit.
The isolators are suitable for fitting to a concrete slab or structural steelwork providing the
surface is level and of sufficient strength where a high level of vibration elimination
is required.
Anti Vibration Mounts
(Pad Type)
Pad vibration isolators can be supplied loose for on site fitting to the base frame of each
chiller unit.
The isolators are suitable for fitting to a structural steelwork only, providing the surface is
level and of sufficient strength where a moderate degree of vibration elimination is
required.
Sequence Control
For the efficient 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 Control Specialists to set up
multiple unit sequence control.
BMS Interface Card
Enables Controlled chillers to be interfaced with most BMS, factory fitted,
please contact Airedale.
Dual Pressure Relief
Valve
A 3-way dual shut-off valve that incorporates 2 relief valve and rupture disc assemblies
per circuit. The valve allows the maintenance of individual pressure relief valves and
rupture discs without the need for refrigerant evacuation.
Electronic Soft Start
The electronic soft start enables the chiller compressor motor to be ramped to speed with
the minimum full load current. Further benefits include removal of nuisance tripping,
supply voltage dips and motor overheating.
Leak Detection Kit
(DQ & DSQ Models Only)
A factory calibrated and fitted leak detection kit, will raise an alarm when refrigerant gas is
detected.
Flow Switch
The flow switch will protect the chiller against low water flow, supplied loose.
Water Filter
20 mesh water filter(s) can be fitted on the inlet water pipework to protect the evaporator
from clogging by sediment, (supplied loose).
“Victaulic” Counterpipe
Kit
A pair of grooved counterpipes and clamps for each heat exchanger can be supplied for
waterside connections.
Alternative Refrigerant
For applications outside the EU, units can be supplied for use with R22, please specify at
time of order.
Commissioning
Airedale Service provides a full commissioning service carried out by professionally
trained, industry experienced engineers. For a competitive quotation, please contact
Airedale Customer Services.
Chillerguard®
In addition to commissioning, a 24 hour, 7 days a week on-call service is on available
throughout the year. 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.

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Design Features & Information
ENERGY EFFICIENCY
Electronic Expansion
Valves (EEV)
Whilst offering versatile control at the full design duty of the chiller, standard Thermostatic
Expansion Valves (TEV) do not automatically optimise themselves to all operating
conditions. Therefore, if the chiller 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 artificially high condensing pressure is normal in conventional systems,
however, this leads to higher operating costs.
Using an EEV allows for good refrigeration control with the chiller operating at part load
and lower ambient conditions with a reduced condensing pressure. By fitting an EEV and
adjusting the head pressure control setting, reduction in energy running values of up
to 27% can be achieved. The Mollier diagram shown below helps to illustrate how this
increase in efficiency is achieved.
EEV’s differ to normal thermostatic expansion valves in their ability to maintain control of
refrigerant flow 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 below 30% rated capacity.
Pressure
(Bar)
Enthalpy
(kJ/kg)
Bubble Curve
Reduction In
Condensing
Temp
Evaporating
Temp
Dew Curve
Reduction in
Compressor
Input Power
Increase in
Cooling Duty
Expansion
Heat of Rejection
Cooling Effect
Key
Cooling Cycle @ 22°C ambient with a conventional TEV fitted.
Cooling cycle @ 22°C ambient, demonstrating a typical EEV
condensing temperature taking full advantage of lower ambient air
temperatures (below 30°C).

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Design Features & Information
MINIMUM SYSTEM WATER VOLUME CALCULATIONS
METHOD 1
Where the system permanent heat load is known:
Vm =
Water Flow Rate (litres/minute) x Minimum Compressor Run Time
(mins) x Chiller Loading Factor
Where
Vm is the minimum water volume in litres
Minimum Compressor Run Time is 2 minutes
Chiller Loading Factor =
Minimum Turndown (kW) x 1.2
Permanent Heat Load
The Chiller Loading Factor limits:
Max 1.00
Min 0.25
Example
250 kW Chiller, 7/12°C Water, Model URAC250DQ with a permanent load of 95 kW
litres1085
951.260
2
54.19 60250
Vm 





METHOD 2
Where the system permanent heat load is unknown:
Vm =
Water Flow Rate (litres/hour) x Minimum Turndown Ratio x 1.2
Maximum Compressor Starts Per Hour
Where
Minimum Turndown Ratio = Minimum Stage Capacity (kW)
Chiller Full Capacity (kW)
Example
250 kW Chiller, 7/12°C Water, Model URAC250DQ permanent load unknown.
litres1031
12
1
x1.2x
250
60
x
5x4.193600x250
Vm 







Method 1 is always preferred.

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Design Features & Information
-
CONTROLS
General Description
The microprocessor controller offers powerful analogue and digital control to meet a wide
range of monitoring and control features including a real time clock and Industry standard
communication port and network connections.
The controller’s inbuilt display is used for viewing the unit operating status and making
adjustments to control parameters by allowing the operator access to a series of
display pages.
Also featured are a visual alarm and the facility to adjust and display control settings by
local operator for information and control.
FEATURES
Unit Remote ON/OFF
Disables/Enables the chiller remotely.
Compressor Anti Cycle
Control
Automatic via the Microprocessor.
Compressor Load Limit
Limits the condensing pressure by unloading above 24Barg.
Limits the evaporating pressure by unloading at the minimum pressure setpoint, which is,
adjustable depending on system glycol content.
Remote Setback
Temperature Setpoint
Switch
A setback setpoint for supply water temperature can be selected to suit summer/winter
conditions or night setback.
Compressor Hours Run
Displays hours run of each compressor.
Password Protection
The control system integrity can be maintained by restricting access with a password
PIN number.
CAUTION
IMPORTANT: To change the PIN number, please contact Airedale at time of order
with the preferred 4 digit number.

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Design Features & Information
-
CONTROLS
FEATURES
Temperature
The microprocessor maintains the set supply Chilled Water temperature by sensing the
return and supply water temperatures, compressor loading.
The microprocessor also monitors and displays the following measured parameters:
Supply Water Temperature
Return Water Temperature
Suction Pressure of each circuit
Liquid Pressure of each circuit
Suction Temperature at each circuit
Superheat for each circuit
Alarms
The following conditions will be detected, triggering a visual display:
Common for both circuits:
Low Supply Temperature
Emergency Stop
Water Flow
Individual for each circuit:
Individual alarms will isolate the affected circuit only.
Compressor Trip
Low Suction Pressure for each circuit
High Liquid Pressure for each circuit
Volt Free Contact Alarm Indication
Low Pressure Switch
Compressor Overload
High Compressor Discharge Temperature
Networking
A Local Area Network ( ) can be used to connect a number of chiller controllers to
offer intercommunication and sequence control. This also allows the connection of
computers, printers and modems on the same communications ring. For further details
and quotation, please contact Airedale Controls.

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Design Features & Information
CONTROL SCHEME
FEATURES
Airedale recognises that all chiller applications are different but fall mainly into 2
application categories; Variable Supply Temperature and Constant Supply Temperature.
The onboard microprocessor has the capability of satisfying either control requirement as
illustrated below. Using the Airedale Variable Supply Temperature control scheme,
energy savings are available when compared with previous schemes and that of the
Constant Supply Temperature application.
Variable Supply Temperature control schemes offer energy savings where the supply
water temperature is not critical to its operation.
Selection of the best application control scheme can be made via a soft switch in the
microprocessor during initial commissioning.
Examples based on Models URAC200D having 6 Stages of Cooling
Variable Supply
Temperature Control
6
7
8
9
10
11
12
13
14
WATER TEMPERATURE °C
20%
40%
50%
60%
80%
100%
Chiller
Capacity %
Cooling Stage
Sequence
1
2
3
4
5
6
Return Water Temperature
Supply Water Temperature
Compressor Off
Mean Value
Constant Supply
Temperature Control
6
7
8
9
10
11
12
13
14
0
2
4
6
8
10
12
14
Supply Water Temperature
Return Water Temperature
Chiller
Capacity %
Cooling Stage
Sequence
20
40
50%
60
80
100%
1
2
3
4
5
6
WATER TEMPERATURE °C
CAUTION
Factory set to Variable Supply Temperature Control unless otherwise stated
at order.
Only when the mode selection has been set can the unit be enabled.

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Performance Data
CAPACITY DATA
Dew Condensing Temperature
Leaving Water
Temperature °C
40°C
45°C
50°C
55°C
Output kW
Input kW
Output kW
Input kW
Output kW
Input kW
Output kW
Input kW
URAC75
5
74.6
18.6
71.2
20.9
67.7
23.2
64.1
25.7
6
77.6
18.6
74
20.9
70.3
23.3
66.6
25.7
7
80.3
18.9
76.6
21.2
72.8
23.5
69
25.8
10
89.2
19.1
85.2
21.3
81.1
23.6
77
25.9
URAC100
5
101.1
24.8
96.7
27.9
92.2
31.2
87.6
34.5
6
104.9
24.8
100.4
28
95.7
31.2
91
34.5
7
108.7
25.1
103.9
28.3
99.1
31.5
94.2
34.7
10
120
25.3
114.8
28.5
109.6
31.7
104.4
34.9
URAC125
5
129.8
31.3
124.1
35.1
118.3
39
112.3
43.2
6
134.8
31.3
128.9
35.1
122.9
39
116.6
43.2
7
139.5
31.7
133.4
35.5
127.2
39.4
120.8
43.5
10
154.9
31.9
148.3
35.6
141.4
39.5
134.4
43.6
URAC150
5
156.6
37.4
150
42.1
143.1
47
135.9
52.2
6
162.4
37.6
155.6
42.2
14.4
47.1
140.9
52.3
7
168
38.1
160.8
42.7
153.4
47,5
145.8
52.5
10
185.9
38.6
178.1
43
170.1
47.7
161.8
52.6
URAC175
5
179.3
42.7
171.8
47.9
163.8
53.7
155.3
59.8
6
186.1
42.7
178.3
48
170
53,7
161.2
59.8
7
192.6
43.4
184.3
48.7
175.7
54.3
166.8
60.2
10
213.2
43.6
204.3
48.9
195
54.5
185.4
60.4
URAC200
5
203,7
48
195
53,9
185,8
60,4
175,9
67,4
6
211,6
47,7
202,7
53,6
193,1
60,1
182,8
67,3
7
218,7
48,9
209,2
54,9
199,3
61,3
188,9
68,1
10
242,3
48,5
232,2
54,5
221,6
61
210,5
68
URAC225
5
231
55
220
61,6
208,5
68,7
196,4
76,3
6
239,9
55,1
228,4
61,7
216,5
68,8
204,1
76,3
7
248,2
55,8
236,3
62,5
224
69,4
211,4
76,7
10
275,2
56,2
262,2
62,9
248,9
69,9
235,4
77,1
URAC240
5
243,6
62
231,2
69,9
218,5
77,9
205,5
86,1
6
252,6
62,2
239,7
69,9
226,6
77,9
213,2
86,1
7
261,5
62,5
248,2
70,1
234,7
78
221
86
10
289,4
63,2
275
70,6
260,5
78,1
245,8
85,8
URAC250
5
255,9
60,9
243,5
68,1
230,2
75,9
216,3
84,4
6
265,7
61,3
252,6
68,5
238,9
76,3
224,7
84,6
7
275,2
62,1
261,5
69,4
247,4
77
232,8
85,1
10
305,1
62,5
290,3
69,7
275,1
77,2
259,5
85,1
URAC270
5
284,4
71,5
269,5
80,5
254,3
89,6
238,8
99,1
6
294,8
71,7
279,4
80,5
263,8
89,7
247,9
99,1
7
305,3
71,8
289,5
80,7
273,5
89,8
257,2
99,2
10
338
72,4
321
81,2
303,8
90,2
286,4
99,3
URAC300
5
326
81
308,5
91
290,8
101,4
272,7
112,1
6
337,9
81
320
91,1
301,7
101,5
283,1
112,3
7
349,9
81,1
331,5
91,3
312,9
101,7
293,9
112,4
10
387,5
81,4
367,8
91,7
347,9
102,3
327,8
113
URAC330
5
367,9
91,4
347
102,4
325,8
113,9
304,1
125,8
6
381,5
91,5
360,1
102,6
338,2
114
316
125,9
7
395,3
91,7
373,3
102,8
350,9
114,2
328,2
126
10
438,4
92,4
414,8
103,5
390,9
114,9
366,7
126,5
URAC360
5
410,6
101,9
386,1
113,9
361,2
126,5
335,9
139,5
6
426
102,1
400,9
114,1
375,3
126,6
349,2
139,5
7
441,6
102,5
415,8
114,4
389,5
126,8
362,9
139,6
10
490,3
103,5
462,5
115,4
434,5
127,5
406,1
140
URAC400
5
451,8
114,8
426,8
128,3
401,4
142,1
375,6
156,3
6
468,6
115
442,8
128,4
416,6
142,3
390,1
156,5
7
485,5
115,3
459
128,8
432,2
142,5
405
156,7
10
538,5
116,2
509,9
129,6
481,1
143,3
452
157,3
URAC450
5
493,1
127,8
467,5
142,6
441,6
157,8
415,4
173,2
6
511,3
127,9
484,9
142,7
458,2
157,9
431,1
173,5
7
529,6
128,2
502,4
143,1
474,9
158,2
447,2
173,7
10
586,8
128,8
557,4
143,9
527,8
159,1
498
174,6
1
Output kW refers to the chilled water duty. All performance data is supplied in accordance with BS EN 14511-1:2018
2
Input kW refers to the compressor input power.
3
Duties applicable for chilled water T between 4 and 8°C.
4
Interpolate for water temperatures between those quoted, do not extrapolate
5
Water flow rate (l/s) = Output ÷ (4.19 x T) Except Glycol use, refer to Glycol Data.
6
For conditions outside those quoted, please refer to Airedale.

Chillers
ULTIMA™REMOTE AIR COOLED
Chillers
17
Technical Manual : Part No 6259485 V1.15.0_08_2018
Performance Data All performance data is supplied in accordance with BS EN 14511-1:2018
OPERATING LIMITS
(For 100% Water)
Minimum Ambient Air DB °C
-5°C
Maximum Ambient Air DB °C
Refer to Capacity Data
Minimum Leaving Water Temperature °C
+5°C
Maximum Return Water Temperature °C
+20°C
1
Temperatures lower than those stated can be obtained with the addition of glycol.
2
For conditions outside those quoted, please refer to Airedale.
GLYCOL DATA
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.
Ethylene Glycol Nominal Correction Factors
Glycol in System / Freezing
Point ºC
10% / -4°C
20% / -9°C
30% / -15°C
40% / -23°C
Cooling Duty
x by
0.98
0.97
0.95
0.93
Input Power
0.99
0.98
0.96
0.95
Water Flow
0.99
1.02
1.04
1.07
Pressure Drop
1.05
1.20
1.38
1.57
Propylene Glycol Nominal Correction Factors
Glycol in System / Freezing
Point ºC
10% / -2°C
20% / -6°C
30% / -12°C
40% / -20°C
Cooling Duty
x by
0.97
0.95
0.91
0.88
Input Power
0.99
0.98
0.96
0.95
Water Flow
0.98
0.97
0.95
0.95
Pressure Drop
1.08
1.17
1.31
1.45

ULTIMA™REMOTE AIR COOLED
Chillers
18
Chillers
Technical Manual : Part No 6259485 V1.15.0_08_2018
Performance Data
WATERSIDE PRESSURE DROPS
URAC75 –URAC250
(Except URAC240)
CHILLER PRESSURE DROP (kPa)
0
20
40
60
80
2 4 6 8 10 12 14 16
URAC75
URAC100
URAC125
URAC150
URAC175
URAC200
URAC225
URAC250
WATERFLOW (l/s)
URAC240 –URAC450
(Except URAC250)
CHILLER PRESSURE DROP (kPa)
0
25
50
75
100
510 15 20 25 30 35
URAC240
URAC400
URAC360
URAC330
URAC300
URAC270
URAC450
WATERFLOW (l/s)
(1)
For glycol solutions, please refer to Glycol Data.
All performance data is supplied in accordance with BS EN 14511-1:2018

Chillers
ULTIMA™REMOTE AIR COOLED
Chillers
19
Technical Manual : Part No 6259485 V1.15.0_08_2018
Performance Data
SOUND DATA
Measurement of Sound
Data
All sound data quoted has been measured in the third-octave band limited values, using
a Real Time Analyser calibrated sound intensity meter in accordance with
BS EN ISO9614 Part 1: 2009. The Global sound data quoted is valid for sound
emitted in the horizontal plane in all directions.
All Sound Power Levels quoted are calculated from measured sound intensity according
to BS EN ISO9614 Part 1: 2009.
Sound Pressure Levels are calculated from sound power using the expanded parallel
piped method according to BS EN ISO11203: 2009.
Global Chiller Sound Level
Standard - D Models
Sound
Measurement
Overall
dB(A)
Frequency (Hz) dB
63
125
250
500
1000
2000
4000
URAC75D
Power
84
71
50
69
81
78
79
76
Pressure
@ 10m
53
39
19
37
49
46
47
44
URAC100D
Power
83
75
48
63
79
76
77
74
Pressure
@ 10m
51
43
16
32
47
45
46
42
URAC125D
Power
85
78
53
66
78
76
81
79
Pressure
@ 10m
54
47
21
34
46
44
49
47
URAC150D
Power
85
84
55
71
80
77
81
75
Pressure
@ 10m
53
53
23
39
48
46
49
44
URAC175D
Power
87
82
54
70
78
82
83
77
Pressure
@ 10m
55
51
23
38
47
50
51
45
URAC200D
Power
88
78
53
69
75
84
84
78
Pressure
@ 10m
57
46
21
38
44
52
53
46
URAC225D
Power
92
77
55
74
81
88
88
81
Pressure
@ 10m
61
45
23
42
49
56
57
49
URAC240D
Power
90
96
90
89
90
80
82
77
Pressure
@ 10m
62
68
62
61
62
52
54
49
URAC250D
Power
94
75
56
76
83
90
90
83
Pressure
@ 10m
63
43
25
45
52
58
59
51
URAC270D
Power
91
94
89
89
89
85
84
79
Pressure
@ 10m
63
66
61
61
61
57
56
51
URAC300D
Power
91
90
88
88
86
87
85
80
Pressure
@ 10m
63
62
60
60
58
59
57
52
URAC330D
Power
95
88
90
93
91
91
90
83
Pressure
@ 10m
67
60
62
65
63
63
62
55
URAC360D
Power
98
86
91
95
94
93
92
84
Pressure
@ 10m
70
58
63
67
66
65
64
56
URAC400D
Power
98
87
92
96
95
93
92
85
Pressure
@ 10m
70
59
64
68
67
65
64
57
URAC450D
Power
99
88
93
96
95
94
93
86
Pressure
@ 10m
71
60
65
68
67
66
65
58
1
dB(A) is the overall sound level, measured on the A scale.
All performance data is supplied in accordance with BS EN 14511-1:2018
2
All sound data measured at nominal conditions: Water in/out 12/7°C at 45°C dew point.
The Sound Pressure data quoted is only valid in free field conditions, where the unit is installed on a reflective base. If the equipment is
placed adjacent to a reflective wall, values may vary to those stated, typically increasing by 3dB for each side added.

ULTIMA™REMOTE AIR COOLED
Chillers
20
Chillers
Technical Manual : Part No 6259485 V1.15.0_08_2018
Performance Data All performance data is supplied in accordance with BS EN 14511-1:2018
SOUND DATA
Global Chiller Sound Level
Quiet - DQ Models
Sound
Measurement
Overall
dB(A)
Frequency (Hz) dB
63
125
250
500
1000
2000
4000
URAC75DQ
Power
81
67
66
75
77
74
75
72
Pressure
@ 10m
49
35
35
43
45
42
43
40
URAC100DQ
Power
79
71
64
69
75
72
73
70
Pressure
@ 10m
47
39
32
38
43
41
42
38
URAC125DQ
Power
81
74
69
72
74
72
77
75
Pressure
@ 10m
50
43
37
40
42
40
45
43
URAC150DQ
Power
81
80
71
77
76
73
77
71
Pressure
@ 10m
49
49
39
45
44
42
45
40
URAC175DQ
Power
83
78
70
76
74
78
79
73
Pressure
@ 10m
51
47
39
44
43
46
47
41
URAC200DQ
Power
84
74
69
75
71
80
80
74
Pressure
@ 10m
53
42
37
44
40
48
49
42
URAC225DQ
Power
88
73
71
80
77
84
84
77
Pressure
@ 10m
57
41
39
48
45
52
53
45
URAC240DQ
Power
89
95
89
89
90
77
77
71
Pressure
@ 10m
61
67
61
61
62
49
49
43
URAC250DQ
Power
90
71
72
82
79
86
86
79
Pressure
@ 10m
59
39
41
51
48
54
55
47
URAC270DQ
Power
89
93
88
88
88
81
79
72
Pressure
@ 10m
61
65
60
60
60
53
51
44
URAC300DQ
Power
88
89
87
87
86
84
80
74
Pressure
@ 10m
60
61
59
59
58
56
52
46
URAC330DQ
Power
93
88
89
92
91
87
84
77
Pressure
@ 10m
65
60
61
64
63
59
56
49
URAC360DQ
Power
95
86
90
94
94
89
87
78
Pressure
@ 10m
67
58
62
66
66
61
59
50
URAC400DQ
Power
96
86
91
95
95
90
87
79
Pressure
@ 10m
68
58
63
67
67
62
59
51
URAC450DQ
Power
96
87
92
96
95
91
88
80
Pressure
@ 10m
68
59
64
68
67
63
60
52
Super Quiet - DSQ
Models
Sound
Measurement
Overall
dB(A)
Frequency (Hz) dB
63
125
250
500
1000
2000
4000
URAC75DSQ
Power
80
66
65
74
76
73
74
71
Pressure
@ 10m
48
34
34
42
44
41
42
39
URAC100DSQ
Power
78
70
63
68
74
71
72
69
Pressure
@ 10m
46
38
31
37
42
40
41
37
URAC125DSQ
Power
80
73
68
71
73
71
76
74
Pressure
@ 10m
49
42
36
39
41
39
44
42
URAC150DSQ
Power
80
79
70
76
75
72
76
70
Pressure
@ 10m
48
48
38
44
43
41
44
39
URAC175DSQ
Power
82
77
69
75
73
77
78
72
Pressure
@ 10m
50
46
38
43
42
45
46
40
URAC200DSQ
Power
83
73
68
74
70
79
79
73
Pressure
@ 10m
52
41
36
43
39
47
48
41
URAC225DSQ
Power
87
72
70
79
76
83
83
76
Pressure
@ 10m
56
40
38
47
44
51
52
44
URAC240DSQ
Power
88
94
88
88
90
72
69
63
Pressure
@ 10m
60
66
60
60
62
44
41
35
URAC250DSQ
Power
89
70
71
81
78
85
85
78
Pressure
@ 10m
58
38
40
50
47
53
54
46
URAC270DSQ
Power
87
92
87
87
88
76
72
64
Pressure
@ 10m
59
64
59
59
60
48
44
36
URAC300DSQ
Power
85
88
86
86
85
79
73
65
Pressure
@ 10m
57
60
58
58
57
51
45
37
URAC330DSQ
Power
90
87
88
91
91
82
77
68
Pressure
@ 10m
62
59
60
63
63
54
49
40
URAC360DSQ
Power
92
85
89
93
93
84
79
70
Pressure
@ 10m
64
57
61
65
65
56
51
42
URAC400DSQ
Power
93
85
90
94
94
85
80
71
Pressure
@ 10m
65
57
62
66
66
57
52
43
URAC450DSQ
Power
94
86
91
95
95
86
81
72
Pressure
@ 10m
66
58
63
67
67
58
53
44
1
dB(A) is the overall sound level, measured on the A scale.
2
All sound data measured at nominal conditions: Water in/out 12/7°C at 45°C dew point.
The Sound Pressure data quoted is only valid in free field conditions, where the unit is installed on a reflective base. If the equipment is
placed adjacent to a reflective wall, values may vary to those stated, typically increasing by 3dB for each side added.