10-EXHIBIT - 1 HHPO Chiller Scope Outline.pdf

Date: 8/7/25

HHPO Chiller Replacement

Outline of Scope of work:

The scope of the work shall include but not limited to:

Replacement of Air-cooled Chiller 2, located in the Chiller yard for the Halifax Health Port Orange Campus, 1041 Dunlawton Ave, Port Orange FL 32127. This system serves the hospital.

Contractor shall provide a turnkey all-inclusive proposal/bid not limited to the following:

o Contractor is responsible for conducting due diligence to ensure the replacement fits within the existing space.

o Basis of design is Trane; approved alternate is York YVAA Chiller; bidders may submit an equal alternate for review and approval. Design data for both Trane and York are attached for bidder’s reference.

o See reference design parameters for Chiller selection:

- RTAF air-cooled screw chiller

- Unit startup

- 200 nominal tons

- 60 hertz

- 460V/60Hz/3 phase

- High efficiency

- Standard noise

- UL listed

- ASME pressure vessel code

- Refrigerant charge R-513A

- AHRI certified

- ASHRAE 90.1 all versions up to 2022

- Made to Order 115-270T

- Circuit Breaker with ASME

- Standard cooling

- 2 pass evaporator

- Water

- Grooved pipe

- Factory installed flow switch water

- Factory insulation- 1.5 inch

- Standard ambient

- Coated Condenser coils

- BYGOLD Coating Cabinet & Casings

- Variable speed fans

- Oil cooler

- Variable speed compressors

- Single point unit power connection

- Circuit breaker with high fault rated control panel

- High amp short circuit rating

- 115V Convenience Outlet

- BACnet interface

- Architectural louvered panels

- Elastomeric isolators

- Ten (10) year Parts, Labor & Refrigerant warranty o Chilled Water Piping o Accessories such as valves o Supports (piping & ductwork) o Insulation minimum of R19 with aluminum jacketing sealed air and watertight. (include reinsulating existing and new lines that serve this unit) o Temporary chiller owner will provide.

o Demolition o Access panels o Vibration isolation o Permits o Commissioning o Structural support, if needed o Hoisting & rigging o O&M o Include sales tax in base bid for Chiller but the Chiller will most likely be an OPO.

o Associated electrical work o Associated plumbing o Associated low voltage work o ICRA o System controls (Siemens) full status and adjustment points o Patching and painting

Cleanliness is imperative and all contractors onsite must pass a background check and be badged.

Unit Overview Chiller Model RTAF air-cooled screw chiller

Unit Nominal Tonnage 200 nominal tons

Unit efficiency High efficiency

Refrigeration Capacity 182.3 tons

Cooling Efficiency 9.949 EER (Btu/W-h)

IPLV.IP 16.44 EER (Btu/W-h)

NPLV.IP 16.24 EER (Btu/W-h)

Unit Voltage 460.V/60.Hz/3 phase

Refrigerant Type Refrigerant charge R-513A

Agency Listing UL listed

Pressure Vessel Code ASME pressure vessel code

ASHRAE 90.1 Compliance ASHRAE 90.1 all versions up to

Model Number RTAF200EU**HXUA1N21X2NXC

CCV1HBPBXXXAA1XXXX0

Evaporator Information

Evaporator Application

Standard cooling

Fluid Temperatures

Evaporator Leaving 42.00 F

Evaporator Entering 54.00 F

Fluid Properties

Fluid Type Water

Freeze Point 32.00 F

Flow Rate

Design Flow 363.0 gpm

Min Flow 202.0 gpm

Fluid Pressure Drop

Design PD 9.69 ft H2O

Min PD 3.01 ft H2O

Construction Features

Configuration 2 pass evaporator

Fouling Factor

0.000100 hr-sq ft-deg F/ Btu

Condenser Information Unit Application Standard ambient

Ambient Air Temp. 95.0 F Condenser Coil Option Coated Long Life

Alloy Aluminum Coil

Auxiliary Items Oil cooler

Fan Type Variable speed fans

Number of Fans 14

Unit Electrical

Unit

Unit Voltage 460.V/60.Hz/3 phase

Frequency 60 hertz

Compressor Starter Variable speed compressors

Total Power 219.9 kW

Compressor Power 200.4 kW

Fan Power 18.76 kW

Incoming Power Line Conn. Type Single point unit power

Power Line Conn. Type Circuit breaker-high fault

Short Circuit Current Option High amp rating

Short Circuit Current Rating 65000 A

RLA

Condenser Fan RLA (each) 2.50 A

RLA/AFD input - Compressor 1A 164.00 A

RLA/AFD input - Compressor 2A 136.00 A

MCA

Single Point Power MCA 383 A

MOP

Single Point Power MOP 500 A

Physical Information

Dimensions

Length 318 in

Width 87 in

Height 94 in

Weights

Operating Weight 11502 lb

Shipping Weight 11319 lb

Refrigerant Charge Oil Charge

Circuit 1 134.3 lb 1.96 gal

Circuit 2 129.4 lb 1.96 gal

Job Name: Halifax Health Port Orange 200 Ton Chiller

Unit Tag: CH-1

Prepared For: Quantity: 1

2025/08/05 13:59:53 Page 1 of 2

REFERENCE DATA SHEET

Unit Acoustics

A-Weighted Sound Power Sound Pressure*

100% 103 dBA 74 dBA

75% 96 dBA 68 dBA

50% 94 dBA 66 dBA

25% 91 dBA 63 dBA

Note: In Accordance with AHRI 370 *Note: at 30 feet in free field

Unit Sound Package

Standard noise

Warranty Standard Warranty

Information for LEED Projects Refrigerant (R-513A) - ckt 1 134.3 lb

Refrigerant (R-513A) - ckt 2 129.4 lb

Rated Capacity (AHRI) 188.9 tons

Rated Efficiency (AHRI) 10.13 EER (Btu/W-h)

IPLV 16.44 EER (Btu/W-h)

Refrigeration Capacity 182.3 tons

Cooling Efficiency 9.949 EER (Btu/W-h)

Compress Power 200.4 kW

Fan Motor Power 18.76 kW

ASHRAE 90.1 all versions up to 2022

This product meets the minimum efficiency requirements of ASHRAE Standard 90.1 and CANS/CSA C743 for all versions (which are based on AHRI standard rating conditions) and, therefore, also meets the LEED "Minimum Energy Performance" prerequisite in the Energy and Atmosphere section.

The LEED Green Building Rating System™, developed by the U.S. Green Building Council, provides indepenent, third-party verification that a building project meets green building and performance measures.

Certified in accordance with the AHRI Air-Cooled Water-Chilling Packages Certification Program, which is based on AHRI Standard 550/590 (I-P) and AHRI Standard 551/591 (SI). Certified units may be found in the AHRI Directory at www.ahridirectory.org.

Trane Select Assist Version Number: 297

Data Generation Date: 8/5/2025

Job Name: Halifax Health Port Orange 200 Ton Chiller

Unit Tag: CH-1

Prepared For: Quantity: 1

2025/08/05 13:59:53 Page 2 of 2

EQUIPMENT SUBMITTAL FOR APPROVAL

PROJECT: HALIFAX PORT ORANGE CHILLER REPLACEMENT

LOCATION:

Air-Cooled Chiller

EQUIPMENT YVAA Chiller

UNIT TAGS CH-1

QUANTITY 1

SOLD TO:

CONSULTING ENGINEER:

PREPARED BY:

DATE:

Thursday, 03 July 2025

REVISION:

REFERENCE DATA SHEET

TABLE OF CONTENTS

(YVAA - Air-Cooled Chiller)

BOM Data

Performance Ratings

Unit Drawings

Wiring Diagrams

Pressure Relief Devices

Unit Specifications Text

Attachments

Receiving/Rigging

Additional Data Sheets

Lead Time Report

Statement of Compliance

Local Standards

Product Spec. Text

IOM Information

Startup Checklist

Warranties

Submittal Approval Page

BOM Data

Product Type: YVAA - Air-Cooled Chiller

Unit Tags: CH-1

Project Name: HALIFAX PORT ORANGE CHILLER REPLACEMENT

Rating Engine Version: REV.v9_28b.idd Version: SN25.06a Generated: 2025/07/03 at 11:56

Unit Name: CH-1 CHL.2025-07.001 Page 3 of 63

BID DATE: 07/03/2025 LAST ADDEDNUM: None

PROJECT: HALIFAX PORT ORANGE CHILLER

REPLACEMENT

NOTE(S)

TO: Interested Bidders

BILL OF MATERIAL

ITEM QTY TAGS DESCRIPTION

I 1 (1)CH-1

DIRECT EXPANSION - AIR COOLED SCREW CHILLER

EQUIPMENT DESCRIPTIONS

EQUIPMENT PROPOSAL

Items Included

● Provide Model YVAA0273DG46BH Qty: 1

● Refrigerant Type: R-513A

● Power: 460/3/60.0 Application

● Power Connection: SP Circuit Breaker w/ Lockable Handle

● Starter Type: Standard VSD

● TEAO Fan Motors

● Low Sound Fans With Variable Speed Control

● 1 1/2 Inch Double Thickness Insulation of Evaporator

● Post-Coated Microchannel Coils (Environment Guard Premium)

● Suction Service Valve

● Refrigerant Warranty: 126 Month (2-10 Year)

● Entire Unit Parts Only Warranty: 126 Month (2-10 Year) (Months are from date of shipment/Years are from date of start up, whichever expires first)

● Entire Unit Labor Only Warranty: 126 Month (2-10 Year) (Months are from date of shipment/Years are from date of start up, whichever expires first)

● Control Transformer

● Additional Compressor Enclosure Sound Kit (Level 1 Reduction)

● Discharge Pressure Readout Kit ASME Pressure Vessel Codes

● Flow Switches One Thermal Dispersion Switch

● Low Ambient Kit Additional Compressor Enclosure Sound Kit (Level 1

Reduction)

● Suction Service Valve

● End Louver (End Hail Guard) Encl Panels (Factory)

● Silent Night Sound / Load Limiting Control Option

Unit Name: CH-1 CHL.2025-07.001 Page 4 of 63

Items Included but Installed by Others

Items NOT Included

● Hauling or Rigging Equipment Into Place.

Unit Name: CH-1 CHL.2025-07.001 Page 5 of 63

Performance Ratings

Unit Name: CH-1 CHL.2025-07.001 Page 6 of 63

Full Load - Design

PIN

YVAA0273DG V46BHVBXXX SANLXXTX57 42XDSXXS16 1X1DXGA2BN XV9RNXGXXX XXXSXX0000

....5...10 ....5...20 ....5...30 ....5...40 ....5...50 ....5...60 ....5...70 ....5...80 ....5...90

Unit

Model No. YVAA0273

Number of Compressors 2

Compressor Type VSD Screw - Semi Hermetic

Number of Compressor Circuits 2

Capacity Control 10% - 100%

Refrigerant R-513A

Performance Data

Net Cooling Capacity [tons.R] 207.0

Total Input Power [kW] 229.2

EER [Btu/W.h] 10.84

NPLV.IP [Btu/W.h] 18.06

A-Weighted Sound Power [dB(A)] 98.0

Electrical Data

Nominal Voltage / Voltage Limits 460/3/60.0 / 414V - 508V

Compressor kW (each circuit) 105.0 / 104.1

Compressor RLA (each circuit) [A] 189.2 / 189.2

Fan QTY (each circuit) 7 / 7

Fan FLA (each circuit) [A] 44.0 / 44.0

Min. Circuit Ampacity [A] 477.0

Max. Fuse / CB Rating [A] 600.0

Unit Short Circuit Withstand [kA] 65 kA@480V

Wires Per Phase 2

Wire Range (Lug Size) #1 -500 kcmil

Displacement Power Factor 0.95

Control kVA 2.000

Performance Impacting Options

End User Application Data Center / Process Duty

Compressor Style Standard Part Load Efficiency

Condenser Coil Post-Coated Microchannel Coils (Environment Guard Premium)

Fan Low Sound Fans With Variable Speed Control

Sound Attenuation Additional Compressor Enclosure Sound Kit (Level 1 Reduction)

Weight & Dimensional Data

Shipping Weight [lbs] 17890

Operating Weight [lbs] 18718

Refrigerant Charge [lbs] 267 / 267

Length [in] 335.2

Width [in] 88.3

Height [in] 94.6

Performance Report Performance Specification

Project Name: HALIFAX PORT ORANGE CHILLER REPLACEMENT Unit Tag: CH-1 Qty.: 1 Model: YVAA0273

Project Name: HALIFAX PORT ORANGE CHILLER REPLACEMENT

Unit Name: CH-1 CHL.2025-07.001 Page 7 of 63

Heat Exchanger Performance

Evaporator Condenser (Air Cooled)

Heat Exchanger Type Hybrid Falling Film Ambient Air Temperature* [ºF] 95.0

Entering Fluid Temperature* [ºF] 56.00 Altitude* [ft] 0.00

Leaving Fluid Temperature* [ºF] 42.00 Condensing Temperature [ºF] 119.10 / 118.65

Flow Rate [USGPM] 353.9 Number of Fans (Circuit 1 / Circuit 2) 7 / 7

Fouling Factor* [h ft2 F/Btu] 0.000100 Total Air Flow [cfm] 166219

Fluid Type* Water Total Fan Power [kW] 20.13

Passes* 2

Pressure Drop [ft H2O] 6.82

Fluid Volume [USGAL] 71.1

Evaporating Temperature [ºF] 39.55

Minimum Flow Rate [USGPM] 300.0

Maximum Flow Rate [USGPM] 1170

* Designates user specified input

Certified in accordance with the AHRI Air-Cooled Water-Chilling Packages Using Vapor Compression Cycle Certification Program, which is based on AHRI Standard 550/590 (I-P) and AHRI Standard 551/591 (SI). Certified units may be found in the AHRI Directory at www.ahridirectory.org. Auxiliary components included in total KW - Oil heaters, Chiller controls. Auxiliary power is already included in the compressor and fan power

Part Load Performance (Based on Standard AHRI Unloading)

Percent Load Ambient [ºF] Capacity [tons.R] Power Input [kW] Unit Efficiency [Btu/W.h]

100.0 95.0 207.0 229.2 10.84

75.0 80.1 155.2 125.8 14.80

50.0 65.1 103.5 61.69 20.13

25.0 55.0 51.75 27.89 22.26

Project Name: HALIFAX PORT ORANGE CHILLER REPLACEMENT Unit Tag: CH-1 Qty.: 1 Model: YVAA0273

Project Name: HALIFAX PORT ORANGE CHILLER REPLACEMENT

Unit Name: CH-1 CHL.2025-07.001 Page 8 of 63

Sound Power Levels (In Accordance with AHRI 370)

Percent Load Ambient [ºF] Octave Band Center Frequency [Hz]

LWA

63 125 250 500 1000 2000 4000 8000

100.0 95.0 97.0 97.0 98.0 97.0 93.0 88.0 84.0 79.0 98.0

75.0 80.1 93.0 94.0 93.0 93.0 89.0 84.0 80.0 75.0 94.0

50.0 65.1 89.0 90.0 89.0 90.0 86.0 80.0 76.0 71.0 91.0

25.0 55.0 87.0 87.0 87.0 87.0 83.0 77.0 73.0 68.0 88.0

Note:Unit is equipped with Additional Compressor Enclosure Sound Kit (Level 1 Reduction) and Low Sound Fans With Variable Speed Control.

Measurement of sound pressure used to obtain the sound power data presented is based on AHRI-370.

Air-cooled chillers are rated in terms of sound power not sound pressure. Johnson Controls provides estimates of sound pressure, but this is not the rating metric.

For an air-cooled chiller, sound pressure calculated from sound power varies depending on how the chiller is assumed to behave, i.e. the radiation model. In other words, determining sound pressure from sound power requires making assumptions that result in different answers at a given distance from the chiller. The environment also influences sound pressure in the field installation. Sound pressure estimation radiation models pertaining to air-cooled chillers include the ‘traditional’ hemispherical model, parallelepiped model and equivalent hemispherical model.

Regarding sound power, Johnson Controls references tolerance limits based on ASHRAE guidelines. These are +/- 6dB in the 63Hz octave band, +/- 4dB in all other octave bands and +/- 3dB for the overall dBA.

Tolerance limits are based on uncertainties associated with:

1. Measurement Test Procedure

2. Repeatability

3. Production / Manufacturing Variability

Standard deviation associated with air-cooled chiller sound data is a measure of spread i.e. it indicates the range of probability of sound levels. Note that for operating conditions other than AHRI’s Standard Rating Condition, higher levels of uncertainty can be expected.

Lead times for factory performance testing depend on test laboratory availability. Please confirm with Johnson Controls Customer Service.

Performance at AHRI Conditions

Evaporator Condenser

EFT [ºF] 54.00 Ambient Temp. [ºF] 95.0

LFT [ºF] 44.00 Altitude [ft] 0.00

Flow Rate [USGPM] 495.4 Performance

Pressure Drop [ft H2O] 12.4 EER [Btu/W.h] 11.19

Fluid Type Water IPLV.IP [Btu/W.h] 18.73

Fouling Factor [h ft2 F/Btu] 0.000100 Net Cooling Capacity [tons.R] 207.0

Fluid Volume [USGAL] 71.1

Note:Unit rated at design condition capacity.

Part Load Performance (Based on AHRI 550/590 - 2023 (IP))

Percent Load Ambient [ºF] Capacity [tons.R] Power Input [kW] Unit Efficiency [Btu/W.h]

100.0 95.0 207.0 222.0 11.19

75.0 80.0 155.3 121.5 15.33

50.0 65.0 103.5 59.43 20.90

25.0 55.0 51.75 26.87 23.11

Project Name: HALIFAX PORT ORANGE CHILLER REPLACEMENT Unit Tag: CH-1 Qty.: 1 Model: YVAA0273

Project Name: HALIFAX PORT ORANGE CHILLER REPLACEMENT

Unit Name: CH-1 CHL.2025-07.001 Page 9 of 63

Notes:

Country of Origin:Mexico

Min DSD (Factory Purpose/Use Only):91.0 psig

Displacement Power Factor refers to compressor only. Unit Power Factor depends on fan option selected. Calculated value is available by request.

Use Copper Conductors only

Minimum and maximum evaporator flow information are for full load ratings with Water.

Evaporator Passes:2, Condenser Type:N, Fan Type:V

Compliant with ASHRAE 90.1 - 2010,2013,2016,2019,2022.

Compliant with IECC - 2012,2015,2018.

The product image shown is for illustrative purposes only and is not representative of selected options.

Project Name: HALIFAX PORT ORANGE CHILLER REPLACEMENT Unit Tag: CH-1 Qty.: 1 Model: YVAA0273

Project Name: HALIFAX PORT ORANGE CHILLER REPLACEMENT

Unit Name: CH-1 CHL.2025-07.001 Page 10 of 63

Unit Drawings

Unit Name: CH-1 CHL.2025-07.001 Page 11 of 63

PRODUCT DRAWING

MODEL:

NOT FOR CONSTRUCTION

Project Name:

Location:

Engineer:

Contractor:

For:

Sold To:

Cust Purch Order#:

Contract#:

UNIT

TAG:

Date:

Rev. Date:

Form No.:

Dwg. Lev.:

Dwg. Scale: NTS

YORK YVAA Air Cooled Screw Chiller

YVAA 0273

HALIFAX PORT ORANGE CHILLER REPLACEMENT

San Antonio 6

CH-1

May 26, 2020 July 03, 2025

201.28-EG1

[3.00]

[1.50]

[10.35]

[80.98]

[160.77]

[200.98]

[301.32]

[85.80]

[47.48]

[14.11]

[12.35]

[60.28]

[48.34]

[60.19]

[83.28]

[59.10]

[88.30]

[94.60]

[60.00]

[5.00]

[2.95]

[49.22]

[43.98]

[22.52]

[65.71]

[72.28]

[3.04] n15.9 MM [5/8"]

MOUNTING HOLES (TYP.)

SECTION B-B

POWER ENTRY

254 MM WIDE X 330 MM

HIGH

(10.00" WIDE X 13.00 HIGH)

SECTION A-A

CONTROL ENTRY

76 MM WIDE X 292 MM

HIGH

(3.00" WIDE X 11.50" HIGH)

B B

AA

[17.25]

[43.98]

[43.98]

[43.98]

[43.98]

[43.98]

OUT

IN

[42.92]

[15.27]

[26.69]

[44.18]

[335.19]

NOZZLE LEGEND

EVAPORATOR INLET LEFT END 2 PASS 6 DIA. (150Psig DWP) EVAPORATOR OUTLET LEFT END 2 PASS 6 DIA. (150Psig DWP)

Victaulic Grooved Nozzles (per ANSI / AWWA C-606)

NOTES:

1. PLACEMENT ON A LEVEL SURFACE

FREE OF OBSTRUCTIONS (INCLUDING

SNOW, FOR WINTER OPERATION) OR

AIR RECIRCULATION ENSURES RATED

PERFORMANCE, RELIABLE OPERATION

AND EASE OF MAINTENANCE. SITE

RESTRICTIONS MAY COMPROMISE

MINIMUM CLEARANCES INDICATED

BELOW, RESULTING IN UNPREDICTABLE

AIR FLOW PATTERNS AND POSSIBLE

DIMINISHED PERFORMANCE. YORK'S UNIT

CONTROLS WILL OPTIMIZE OPERATION

WITHOUT NUISANCE HIGH PRESSURE

SAFETY CUTOUT; HOWEVER, THE SYSTEM

DESIGNER MUST CONSIDER POTENTIAL

PERFORMANCE DEGRADATION. ACCESS TO

THE UNIT CONTROL CENTER ASSUMES

THE UNIT IS NO HIGHER THAN ON

SPRING ISOLATORS. RECOMMENDED

MINIMUM CLEARANCES: SIDE TO WALL - 6';

REAR TO WALL - 6'; CONTROL PANEL

TO WALL - 4'; TOP - NO

OBSTRUCTIONS ALLOWED; DISTANCE

BETWEEN ADJACENT UNITS - 10';

NO MORE THAN ONE ADJACENT WALL

MAY BE HIGHER THAN THE UNIT.

2. WEIGHT AND CENTER OF GRAVITY -

REFER TO AVM REPORT.

3. WATER CONNECTIONS ARE GROOVED

FOR VICTAULIC CONNECTION.

4. DIMENSIONS IN mm [INCHES].

Wiring Diagrams

FORM 201.28-EG1 (721)

JOHNSON CONTROLS 75

Power wiring

STANDARD

CONTROL

TRANSFORMER

UNIT CONTROLS

EVAPORATOR HEATER

FAN

CONTACTORS

GR

D

LINE

REACTOR

FIELD PROVIDED

UNIT POWER

SUPPLY

SEE NOTE 1

UNIT MOUNTED ELECTRONICS

INVERTER

INVERTER

TERMINAL BLOCK

(CIRCUIT BREAKER - OPT)

(NON-FUSED DISCONNECT

SWITCH - OPT)

COMPRESSOR

SYSTEM #1

COMPRESSOR

SYSTEM #2

SINGLE POINT WIRING

LD18588

JOHNSON CONTROLS 77

SYS. No. 1

ALARM

CONTACTS

SYS. No. 2

ALARM

CONTACTS

CHILLER

RUN

EVAP. PUMP

START

SIGNAL

SYS. No. 1 RUN PERM

SYS. No. 2 RUN PERM

FLOW SWITCH (-SF)

PRINT (PNT)

LEGEND

TERMINAL BLOCK FOR CUSTOMER CONNECTIONS

TERMINAL BLOCK FOR YORK CONNECTIONS

WIRING AND COMPONENTS BY YORK

OPTIONAL EQUIPMENT

WIRING AND/OR COMPONENTS BY OTHERS

RELAY

BOARD

No. 2

RELAY

BOARD

No. 1

CONTROL

BOARD

Customer control wiring

LD18590

JOHNSON CONTROLS

Control wiring

LD19417 LD19418

JOHNSON CONTROLS 79

LD19417

Control wiring (cont'd)

LD19418

PIN

YVAA0273DG V46BHVBXXX SANLXXTX57 42XDSXXS16 1X1DXGA2BN XV9RNXGXXX XXXSXX

....5...10 ....5...20 ....5...30 ....5...40 ....5...50 ....5...60 ....5...70 ....5...80 ....5...90

AVM Data

LOCATION X Distance [in] Y Distance [in] JCI PART NUMBER SAP NUMBER COLOUR Operating Weights [lb]

R1 10.4 1.3 029-25335-001 434002 Charcoal 632

R2 81.0 1.3 029-25335-004 434005 Charcoal 2591

R3 160.8 1.3 029-25335-002 434004 Brick Red 1638

R4 201.0 1.3 029-25335-004 434005 Charcoal 2885

R5 301.3 1.3 029-25335-002 434004 Brick Red 1638

L1 10.4 87.1 029-25335-001 434002 Charcoal 589

L2 81.0 87.1 029-25335-004 434005 Charcoal 2420

L3 160.8 87.1 029-25335-004 434005 Charcoal 1809

L4 201.0 87.1 029-25335-004 434005 Charcoal 2753

L5 301.3 87.1 029-25335-004 434005 Charcoal 1809

Weight Data

Total Weight [lb] Centre of Gravity [in]

Shipping Weight [lb] 17890 Xg [in] 175.3

Operating Weights [lb] 18718 Yg [in] 46.2

All values are de-rated by 15% apart from those which have part number. (029-25334-013 and 029-25336-014: 0% de-rated), (029-25335-004: 10% de-rated), (029-25335-001 and 029-25335-003: 25% de-rated)

YVAA Air-Cooled VSD Screw Chiller AVM Report

Project Name: HALIFAX PORT ORANGE CHILLER REPLACEMENT Unit Tag: CH-1 Qty.: 1 Model: YVAA0273

Project Name: HALIFAX PORT ORANGE CHILLER REPLACEMENT

Unit Name: CH-1 CHL.2025-07.001 Page 18 of 63

Pressure Relief Devices

Unit Name: CH-1 CHL.2025-07.001 Page 19 of 63

Unit Specifications Text

Unit Name: CH-1 CHL.2025-07.001 Page 20 of 63

Air Cooled Screw Liquid Chiller - YORK YVAA R-513A 50Hz & 60Hz

I. GENERAL

a. GENERAL REQUIREMENTS

i. The requirements of this Section shall conform to the general provisions of the Contract, including General and Supplementary Conditions, Conditions of the Contract, and Contract Drawings.

b. SCOPE

i. Provide Microprocessor controlled, twin-screw com¬pressor, air-cooled, liquid chillers of the scheduled capacities as shown and indicated on the Drawings, including but not limited to:

1. Chiller package

2. Charge of refrigerant and oil

3. Electrical power and control connections

4. Chilled liquid connections

5. Manufacturer start-up

c. QUALITY ASSURANCE

i. Products shall be Designed, Tested, Rated and Certified in accordance with, and Installed in compliance with applicable sections of the following Standards and Codes:

1. AHRI 550/590 – Water Chilling Packages Using the Vapor Compression Cycle

2. AHRI 370 – Sound Rating of Large Outdoor Refrigerating and Air-Conditioning Equipment

3. ANSI/ASHRAE 15 – Safety Code for Mechanical Refrigeration

4. ANSI/ASHRAE 34 – Number Designation and Safety Classification of Refrigerants

5. ASHRAE 90.1 – Energy Standard for Buildings Except Low-Rise Residential Buildings

6. ANSI/NFPA 70 – National Electrical Code (N.E.C.)

7. ASME Boiler and Pressure Vessel Code, Section VIII, Division 1

8. OSHA – Occupational Safety and Health Act

9. Manufactured in facility registered to ISO 9001

10. Conform to Intertek Testing Services for construction of chillers and provide ETL/cETL Listed Mark

ii. Factory Run Test: Chiller shall be pressure-tested, evacuated and fully charged with refrigerant and oil, and shall be factory operational run tested with water flowing through the vessel.

iii. Chiller manufacturer shall have a factory trained and supported service organization.

iv. Warranty: Manufacturer shall Warrant all equipment and material of its manufacture against defects in workmanship and material for a period of eighteen (18) months from date of shipment or twelve (12) months from date of start-up, whichever occurs first.

d. DELIVERY AND HANDLING

i. Unit shall be delivered to job site fully assembled with all interconnecting refrigerant piping and internal wiring ready for field installation and charged with refrigerant and oil by the Manufacturer.

ii. Provide protective covering over vulnerable components for unit protection during shipment. Fit nozzles and open ends with plastic enclosures.

iii. Unit shall be stored and handled per Manufacturer’s instructions.

II. PRODUCTS

Unit Name: CH-1 CHL.2025-07.001 Page 21 of 63

a. MANUFACTURERS

i. The design shown on the Drawings is based on YORK model YVAA chiller manufactured by Johnson Controls / YORK. Alternate equipment will be acceptable if the manufacturer’s equipment meets the scheduled performance and complies with these specifications. If equipment manufactured by a manufacturer other than that scheduled is utilized, then the Mechanical Contractor shall be responsible for coordinating with the General Contractor and all affected Subcontractors to insure proper provisions for installation of the furnished unit. This coordination shall include, but not be limited to, the following:

1. Structural supports for units.

2. Piping size and connection/header locations.

3. Electrical power requirements and wire/conduit and overcurrent protection sizes.

4. Chiller physical size on plant layout.

5. Site noise considerations.

ii. The Mechanical Contractor shall be responsible for all costs incurred by the General Contractor, Subcontractors, and Consultants to modify the building provisions to accept the furnished alternate equipment.

iii. The equipment manufacturer must specialize in the design and manufacture of the products specified and shall have a minimum of five

(5) years of experience in supplying variable speed driven compressor technology on the type of equipment and refrigerant specified.

b. GENERAL

i. Description: Furnish, Install, and Commission factory assembled, charged, and operational run tested air-cooled screw compressor chiller as specified herein and shown on the Drawings. Chiller shall include, but is not limited to: a complete system with multiple independent refrigerant circuits, semi hermetic twin screw compressors, shell and tube hybrid falling film type evaporator, air-cooled condenser, R-513A refrigerant, lubrication system, interconnecting wiring, safety and operating controls including capacity controller, control center, motor starting components, and special features as specified herein or required for safe, automatic operation.

ii. Operating Characteristics:

1. Provide low and high ambient temperature control options as required to ensure unit is capable of starting and operating from

0°F to 125°F (-23°C to 52°C) ambient temperature.

2. Provide capacity control system capable of reducing unit capacity to 10% of full load for 2 compressor units. Compressor shall start in unloaded condition. Hot gas bypass shall not be acceptable to meet specified minimum load.

iii. Cabinet: Unit panels, structural elements, control boxes and heavy gauge structural base shall be constructed of painted galvanized steel. All exposed sheet steel shall be coated with baked on powder paint to meet 500-hour salt spray test in accordance with the ASTM B117 standard.

iv. Shipping: Unit shall ship in one piece and shall require installer to provide only a single evaporator inlet and outlet pipe connection. If providing chiller model that ships in multiple pieces, bid shall include all the material and field labor costs for factory authorized personnel to install a trim kit to connect the pieces as well as all interconnecting piping and wiring.

c. COMPRESSORS

i. Compressors: Shall be direct drive, semi hermetic, rotary twin-screw type, including: muffler, temperature actuated ‘off-cycle’ heater, rain-tight terminal box, discharge shut-off service valve, suction shut-off service valve for each compressor and precision machined cast iron housing. Design working pressure of entire compressor, suction to discharge, shall be 350 psig (24 barg) or higher. Compressor shall be U.L. Recognized.

ii. Compressor Motors: Refrigerant suction-gas cooled accessible hermetic compressor motor, full suction gas flow through 0.006”

(0.1524 mm) maximum mesh screen, with inher-ent internal thermal overload protection and external current overload on all three phases.

iii. Balancing Requirements: All rotating parts shall be statically and dynamically balanced.

iv. Lubrication System: External oil separators with no moving parts, 450 psig (31 barg) design working pressure, and ETL listing shall be provided on the chiller. Refrigerant system differential pressure shall provide oil flow through service replaceable, 0.5 micron, full flow, cartridge type oil filter internal to compressor. Filter bypass, less restrictive media, or oil pump not acceptable.

v. Capacity Control: Compressors shall start at minimum load. Provide Microprocessor control to command compressor capacity to balance compressor capacity with cooling load.

d. REFRIGERANT CIRCUIT COMPONENTS

i. Refrigerant: R-513A. Classified as Safety Group A1 according to ASHRAE 34.

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ii. Equipment supplied shall comply with LEED Energy & Atmosphere Credit 4, Enhanced Refrigerant Management.

iii. Each independent refrigerant circuit shall incorporate all components necessary for the designed operation including: liquid line shut-off valve with charging port, low side pressure relief device, removable core filter-drier and sight glass with moisture indicator.

iv. Chiller manufacturer shall provide an independent circuit for each compressor to provide maximum redundancy during chiller operation. If equipment does not have independent circuits per compressor, manufacturer shall provide owner one spare compressor of each unique size.

v. Discharge lines shall be provided with manual compressor shut-off service valves.

e. HEAT EXCHANGERS

i. Evaporator:

1. Evaporator shall be shell and tube, hybrid falling film type with 2 pass arrangement to optimize efficiency and refrigerant charge. Tubes shall be high-efficiency, internally and externally enhanced type copper tubes with 0.035” (0.89 mm) minimum wall thickness at all intermediate tube supports to provide maximum tube wall thickness at the support area. Each tube shall be roller expanded into the tube sheets providing a leak proof seal, and be individually replaceable. Independent refrigerant circuits shall be provided per compressor.

2. Constructed, tested, and stamped in accordance with applicable sections of ASME pressure vessel code for minimum 235 psig

(16 barg) refrigerant side design working pressure and 150 psig (10 barg) liquid side design working pressure.

3. Water boxes shall be removable to permit tube cleaning and replacement. Water boxes shall include liquid nozzle connections suitable for ANSI/AWWA C-606 couplings, welding, or flanges.

4. Provide vent and drain fittings.

5. Provide thermostatically controlled shell heaters to assist in preventing freeze damage.

6. Connection location: Chilled liquid inlet and outlet nozzle connections are located at rear (opposite control panel) end of unit.

ii. Air-cooled Condenser:

1. Condenser coils shall be microchannel type, parallel flow aluminum alloy tubes metallurgically brazed as one piece to enhanced aluminum alloy fins. Waterside economizer coil shall be tube and fin type with 3/8 diameter tube for low pressure drop and to avoid clogging. If microchannel economizer coils are provided, contractor is responsible to provide wye-strainer properly sized to avoid economizer coil clogging. Condenser coils shall be designed for 350 psig (24 barg) or higher working pressure.

Economizer coils shall be designed for 150 psig (10.3 barg) or higher. Economizer and condenser coils shall be post-coated with an electro-deposited and baked flexible epoxy coating that is finished with a polyurethane UV resistant top-coat suitable for highly corrosive applications. Manufacturer shall provide standard five (5) year parts warranty against corrosion when used in accordance with manufacturer’s application recommendations.

2. Unit shall include End Hail Guard: Louvered steel panels on rear of unit (opposite end of control panel), painted to match unit panels.

3. Low Sound Fans with Variable Speed Drives. All fans shall be powered by VSDs. Fans shall provide vertical air discharge from extended orifices. Fans shall be composed of corrosion resistant aluminum hub and glass-fiber-reinforced polypropylene composite blades molded into a low-noise airfoil section. Fan impeller shall be dynamically balanced for vibration-free operation. Fan guards of heavy gauge, PVC (polyvinyl chloride) coated or galvanized steel.

4. Fan Motors: High efficiency, direct drive, 3-phase, insulation class “F”, current protected, Totally Enclosed Air-Over (TEAO), with double sealed, permanently-lubricated ball bearings. Open Drip Proof (ODP) fan motors will not be acceptable.

f. INSULATION

i. Material: Closed-cell, flexible, UV protected, thermal insulation complying with ASTM C 534 Type 2 (Sheet) for preformed flexible elastomeric cellular thermal insulation in sheet and tubular form.

ii. Thickness: 1-1/2” (38mm).

iii. Thermal conductivity: 0.26 (BTU/HR-Ft2-°F/in) maximum at 75°F mean temperature.

iv. Factory-applied insulation over cold surfaces of liquid chiller components including evaporator shell, water boxes, and suction line.

Liquid nozzles shall be insulated by Contractor after pipe installation.

v. Adhesive: As recommended by insulation manufacturer and applied to 100 percent of insulation contact surface including all seams and joints.

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g. ACOUSTICAL DATA

i. Provide acoustical sound power or sound pressure level data in decibels (dB) at the scheduled eight (8) octave band center frequencies.

A-weighted sound data alone is not acceptable.

ii. Provide all sound power or sound pressure level data at 100%, 75%, 50%, and 25% load.

iii. Supplied equipment shall not exceed scheduled sound power or sound pressure level data at any load point. The mechanical

Contractor shall be responsible for any additional costs associated with equipment deviation.

iv. Acoustical performance ratings shall be in accordance with AHRI Standard 370.

v. Provide optional control input to limit sound output of the chiller based on time of day. Shall be programmable at the chiller panel or controlled remotely via signal (4-20 mA or 0-10VDC) from BAS system. Chillers without this feature shall be provided with the necessary sound attenuation to meet the scheduled sound performance data at all load points.

h. POWER AND ELECTRICAL REQUIREMENTS

i. Power/Control Panel:

1. Factory installed and wired NEMA 3R, powder painted steel cabinets with tool lockable, hinged, latched, and gasket sealed outer doors equipped with wind struts for safer servicing. Provide main power connection(s), compressor starters and fan motor contactors, current overloads, and factory wiring.

2. Panel shall include control display access door.

ii. Single Point Power:

1. Provide single point power connection to chiller, shall be 3 phase of scheduled voltage.

2. Single Point Circuit Breaker: A unit-mounted Circuit Breaker with external lockable handle shall be provided at the point of incoming single point connection for field connection, interconnecting wiring to the compressors, and isolating the power voltage for servicing. Incoming power wiring must comply with local codes. Circuit breaker shall be sized to provide the motor branch circuit protection, short circuit protection and ground fault protection for the motor branch-circuit conductors, the motor control apparatus and the motors.

iii. Control Transformer: Power panel shall be supplied with a factory mounted and wired control transformer that will supply all unit control voltage from the main unit power supply. Transformer shall utilize scheduled line voltage on the primary side and provide 115V/1Ø on secondary.

iv. Short Circuit Withstand Rating of the chiller electrical enclosure shall be (380, 400, & 460V: 65,000 Amps). Rating shall be published in accordance with UL508.

v. Motor Starters: Motor starters shall be Variable Frequency Drive type with zero electrical inrush current. Wye-Delta, Solid State, and Across the Line type starters will not be acceptable.

vi. Motor Starters: Motor starters shall be zero electrical inrush current (Variable Frequency Drives) or reduced inrush type (Closed transition Wye-Delta or Solid State) for minimum electrical inrush. Open transition Wye-Delta and Across the Line type starters will not be acceptable.

vii. Motor Starters: Motor starters shall be Variable Frequency Drive type with zero electrical inrush current. Wye-Delta, Solid State, and

Across the Line type starters will not be acceptable.

viii. Power Factor:

1. Provide equipment with power factor correction capacitors as required to maintain a displacement power factor of 95% at all load conditions.

2. The installing contractor is responsible for additional cost to furnish and install power factor correction capacitors if they are not factory mounted and wired.

ix. All exposed power wiring shall be routed through liquid-tight, UV-stabilized, non-metallic conduit.

x. Supplied equipment shall not exceed scheduled Minimum Circuit Ampacity (MCA.) The mechanical Contractor shall be responsible for any additional costs associated with equipment deviation.

i. CONTROLS

i. General:

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1. Provide automatic control of chiller and waterside economizer operation including compressor start/stop and load/unload, anti-recycle timers, condenser fans, evaporator pump, evaporator heater, waterside economizer bypass value, unit alarm contacts and run signal contacts.

2. Provide dry contacts for chilled fluid pump control and evaporator shell heaters to assist in preventing freeze damage due to migration of refrigerant at ambient temperatures below 32°C (0°C).

3. Chiller shall automatically reset to normal chiller operation after power failure.

4. Unit operating software shall be stored in non-volatile memory. Field programmed set points shall be retained in lithium battery backed regulated time clock (RTC) memory for minimum 5 years.

5. Alarm contacts shall be provided to remote alert for any unit or system safety fault.

ii. Display:

1. Provide a touch screen display per chiller that is viewable in both direct sunlight and during nighttime.

2. Display shall be accessible through display access door without opening main control/electrical cabinet doors.

3. Display shall provide a minimum of unit setpoints, status, electrical data, temperature data, pressures, safety lockouts and diagnostics without the use of a coded display.

4. Descriptions in English (or available language options), numeric data in English (or Metric) units.

iii. Security Access: Controlled through YORK Chiller Access Manager which will provide users dynamic access codes so that changes in the control panel can be traced back to a specific user. Users will need to set up an account at www.yorkchilleraccessmanager.com in order to be able to generate access codes. Access levels are defined by different levels of user capability.

iv. Programmable Setpoints (within Manufacturer limits): Display language, chilled liquid cooling mode, local/remote control mode, display units mode, system lead/lag control mode, remote temperature reset, remote current limit, remote sound limit, low ambient temperature cutout enable/disable, leaving chilled liquid setpoint and range, maximum remote temperature reset.

v. Display Data: Chilled liquid leaving and entering temperatures; outside ambient air temperature; lead system; evaporator pump status;

active remote control; compressor suction, discharge, and oil pressures per refrigerant circuit; compressor discharge, motor, and oil temperatures per refrigerant circuit; saturation temperatures per refrigerant circuit; compressor speed; condenser fan status; condenser subcooling temperature; condenser drain valve percentage open; compressor capacity in percentage of Full Load Amps; compressor number of starts; run time; operating hours; evaporator heater status; history data for last ten shutdown faults; history data for last 20 normal (non-fault) shutdowns.

vi. Predictive Control Points: Unit controls shall avoid safety shutdown when operating outside design conditions by optimizing the chiller controls and cooling load output to stay online and avoid safety limits being reached. The system shall monitor the following parameters and maintain the maximum cooling output possible without shutdown of the equipment: motor current, suction pressure, discharge pressure, starter internal ambient temperature, and starter baseplate temperature.

vii. System Safeties: Shall cause individual compressor systems to perform auto-reset shut down if: high discharge pressure or temperature, low suction pressure, low motor current, high/low differential oil pressure, low discharge superheat, high motor temperature, system control voltage.

viii. Unit Safeties: Shall be automatic reset and cause compressors to shut down if: high or low ambient temperature, low leaving chilled liquid temperature, under voltage, flow switch operation. Contractor shall provide flow switch and wiring per chiller manufacturer requirements.

ix. Manufacturer shall provide any controls not listed above, necessary for automatic chiller operation. Mechanical Contractor shall provide field control wiring necessary to interface sensors to the chiller control system.

j. ACCESSORIES AND OPTIONS

i. Some accessories and options supersede standard product features. All options are factory-mounted unless otherwise noted.

ii. CONTROLS OPTIONS:

1. Building Automation System Interface: Chiller to accept BACnet MS/TP, N2 and Modbus protocol from BAS (by others). BACnet to be BACnet Testing Laboratories (BTL) listed and support BACnet Automatic Discovery to eliminate field commissioning of chiller controls.

iii. GENERAL OPTIONS:

1. Vibration Isolation (All Options Field Mounted by Contractor):

a. Provide Elastomeric Isolators.

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2. END USER APPLICATION:

a. Data Center/Process Duty kit is available for any YVAA unit. This application is ideal for Data Center or Process Duty applications which require the unit's full load capacity to be maintained regardless of ambient temperature. This kit requires the use of VSD Fans.

III. EXECUTION

a. INSTALLATION

i. General: Rig and Install in full accordance with Manufacturer’s requirements, Project drawings, and Contract documents.

ii. Location: Locate chiller as indicated on drawings, including cleaning and service maintenance clearance per Manufacturer instructions.

Adjust and level chiller on support structure.

iii. Components: Installing Contractor shall provide and install all auxiliary devices and accessories for fully operational chiller.

iv. Electrical: Coordinate electrical requirements and connections for all power feeds with Electrical Contractor.

v. Controls: Coordinate all control requirements and connections with Controls Contractor.

vi. Finish: Installing Contractor shall paint damaged and abraded factory finish with touch-up paint matching factory finish.

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Attachments

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Receiving/Rigging

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Additional Data Sheets

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Form Number: 150.12-AD2 (720)

Supersedes: 150.12-AD2 (520)

Application Data

Issue Date: 2020-07-01

Johnson Controls - Confidential

Air-Cooled Chiller Derating due to Airflow Restrictions

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2 Air-Cooled Chiller Derating due to Airflow Restrictions

Johnson Controls - Confidential

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Contents

Introduction Recommended minimum clearances

YVAA

Case 1: Study of two YVAA chillers side by side Case 2: Study of three or more YVAA chillers side by side Case 3: Study of a single chiller surrounded by a fence Case 4: Study of a YVAA chiller surrounded by solid wall

YLAA

Case 1: Study of two YLAA chillers side by side Case 2: Study of three or more YLAA chillers side by side Case 3: Study of a single chiller surrounded by a fence Case 4: Study of a YLAA chiller surrounded by solid wall

Air-Cooled Chiller Derating due to Airflow Restrictions 3

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4 Air-Cooled Chiller Derating due to Airflow Restrictions

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Introduction This report presents different scenarios involving various air restrictions to YORK air-cooled chillers.

These scenarios outline the scope of the chiller’s derating by quantifying the decrease of capacity and the increase of power required on a case by case basis. The following are the tested cases:

• Case 1: Derating of two chillers placed side by side

• Case 2: Derating of three or more chillers in a row (chillers with other chillers on either side and chillers on the end of the row)

• Case 3: Required open area of a fence surrounding a single chiller for negligible derating

• Case 4: Derating of a single chiller surrounded by a solid wall

Johnson Controls has set recommendations for placement of chillers next to each other or next to walls while still allowing adequate airflow to the units. However, some clients may wish to forgo these recommendations at the cost of increased power consumption and loss of capacity. This guide details several common restrictions to airflow and quantifies the derating of efficiency so that the client to make an informed decision on the placement of air-cooled chiller units. Figure 1 shows the recommended minimum clearances for a YVAA chiller. Any deviation from the minimum clearances causes a decrease in performance.

Recommended minimum clearances The recommended clearances for the YVAA units are as follows:

• Side to wall: 6 ft (1.8 m)

• Rear to wall: 6 ft (1.8 m)

• Control panel end to wall: 4 ft (1.2 m)

• Top: no obstructions

• Distance between adjacent units: 10 ft (3 m)

Figure 1: Recommended minimum clearances, m (ft)

5Air-Cooled Chiller Derating due to Airflow Restrictions

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YVAA

Case 1: Study of two YVAA chillers side by side The recommended minimum clearance for two air-cooled chillers placed next to each other is 10 ft (3 m). See the following figure, where D is the distance between adjacent units.

Figure 2: Diagram of Case 1

Closer placement is achievable, but this causes the power consumption of the unit to increase, and lowers the unit’s capacity. See the following graphs for the respective adjustments to performance.

Figure 3: Capacity ratio derating

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20 to 26 fan un its

14 to 18 fan un its

8 to 12 fan units

Figure 4: Increase in power

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Distance in Feet Between Two Chillers Side by Side

20 to 26 fan units

14 to 18 fan units

8 to 12 fan units

Air-Cooled Chiller Derating due to Airflow Restrictions6

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Case 2: Study of three or more YVAA chillers side by side Similarly to Case 1, the recommended minimum clearance of this configuration is 10 ft (3 m) between each unit. See the following figure, where D is the distance between adjacent units.

Figure 5: Diagram of Case 2

All chillers experience larger derating than Case 1. See the following graphs for the respective adjustments to performance.

Figure 6: Capacity ratio derating in side chillers

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20 to 26 fan un its

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8 to 12 fan units

Figure 7: Increase in power in side chillers

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Distance in Feet Between Chillers

20 to 26 fan units

14 to 18 fan units

8 to 12 fan units

7Air-Cooled Chiller Derating due to Airflow Restrictions

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Figure 8: Capacity ratio derating in center chiller

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20 to 26 fan un its

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Figure 9: Increase in power in center chiller

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20 to 26 fan un its

14 to 18 fan un its

8 to 12 fan units

Case 3: Study of a single chiller surrounded by a fence Note: Assuming the wall height is the same height as the installed chiller.

In some cases, a customer may want to conceal the chiller with a thin wall or fence. This can be accomplished with a wall that is the same height as the chiller without any negligible derating to capacity or increase in power required. See Figure 26, where D is the distance between the chiller and the wall. See Figure 11 for the necessary percent of openness a wall or a fence requires at varying distances from the chiller.

Note: A chiller may not be accessible for servicing if a wall surrounds the chiller at close distances. A gate or other alterations to the fence may have to be installed.

Air-Cooled Chiller Derating due to Airflow Restrictions8

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Figure 10: Diagram of Case 3

Figure 11: Open area of a fence required for negligible derating of chiller capacity and power

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er ce nt o f O pe n F en ce

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Distance of Chiller to Fence

Case 4: Study of a YVAA chiller surrounded by solid wall An installation of a chiller inside of a pit, or with thick walls around it that are taller than the chiller, causes lower capacity and higher power consumption. See the following figure, where D is the distance between the chiller and the wall. If the wall is the same height as the chiller, the derating is negligible for a distance of 6 ft (1.8 m) or more between the chiller and the walls. See Case 3.

Figure 12: Diagram of Case 4

9Air-Cooled Chiller Derating due to Airflow Restrictions

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An increase of the height of the wall above the chiller’s height causes derating due to restriction of airflow. See the following graphs.

Figure 13: Example of distance (D) and height (H)

Figure 14: Percent of capacity derating with increasing wall height (6 ft from wall)

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20 to 26 fan units

14 to 18 fan units

8 to 12 fan units

Figure 15: Percent of power increase with increasing wall height (6 ft from wall)

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Air-Cooled Chiller Derating due to Airflow Restrictions10

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Figure 16: Percent of capacity derating with increasing wall height (8 ft from wall)

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20 to 26 fan un its

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8 to 12 fan units

Figure 17: Percent of power increase with increasing wall height (8 ft from wall)

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11Air-Cooled Chiller Derating due to Airflow Restrictions

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YLAA

Case 1: Study of two YLAA chillers side by side The recommended minimum clearance for two air-cooled chillers placed next to each other is 10 ft (3 m). See the following figure, where D is the distance between adjacent units.

Figure 18: Diagram of Case 1

Closer placement is achievable, but this causes the power consumption of the unit to increase, and lowers the unit’s capacity. See graphs for the respective adjustments to performance.

Figure 19: Capacity ratio derating

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Figure 20: Increase in power

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