Ingersoll-Rand Trane Ascend ACS Montage- und Bedienungsanleitung

SSAAFFEETTYY WWAARRNNIINNGG

Only qualified personnel should install and service the equipment The installation, starting up, and servicing of heating, ventilating, and

air-conditioning equipment can be hazardous and requires specific knowledge and training Improperly installed, adjusted or altered

equipment by an unqualified person could result in death or serious injury When working on the equipment, observe all precautions in the

literature and on the tags, stickers, and labels that are attached to the equipment

October 2019 AACC--SSVVXX000022CC--EENN

Ascend™™ Air-Cooled Chiller — Model ACS

140 to 230 Nominal Tons

Installation, Operation,

and Maintenance

Introduction

Read this manual thoroughly before operating or

servicing this unit

Warnings, Cautions, and Notices

Safety advisories appear throughout this manual as

required Your personal safety and the proper

operation of this machine depend upon the strict

observance of these precautions

The three types of advisories are defined as follows:

WARNING

Indicates a potentially hazardous situation

which, if not avoided, could result in death or

serious injury.

CAU

TION

Indicates a potentially hazardous situation

which, if not avoided, could result in minor or

moderate injury. It could also be used to alert

against unsafe practices.

NOTICE

Indicates a situation that could result in

equipment or property-damage only

accidents.

Important Environmental Concerns

Scientific research has shown that certain man-made

chemicals can affect the earth’s naturally occurring

stratospheric ozone layer when released to the

atmosphere In particular, several of the identified

chemicals that may affect the ozone layer are

refrigerants that contain Chlorine, Fluorine and Carbon

(CFCs) and those containing Hydrogen, Chlorine,

Fluorine and Carbon (HCFCs) Not all refrigerants

containing these compounds have the same potential

impact to the environment Trane advocates the

responsible handling of all refrigerants-including

industry replacements for CFCs and HCFCs such as

saturated or unsaturated HFCs and HCFCs

Important Responsible Re rigerant

Practices

Trane believes that responsible refrigerant practices

are important to the environment, our customers, and

the air conditioning industry All technicians who

handle refrigerants must be certified according to local

rules For the USA, the Federal Clean Air Act (Section

608) sets forth the requirements for handling,

reclaiming, recovering and recycling of certain

refrigerants and the equipment that is used in these

service procedures In addition, some states or

municipalities may have additional requirements that

must also be adhered to for responsible management

of refrigerants Know the applicable laws and follow

them

WWAARRNNIINNGG

PPrrooppeerr FFiieelldd WWiirriinngg aanndd GGrroouunnddiinngg

RReeqquuiirreedd!!

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sseerriioouuss iinnjjuurryy

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ppeerrssoonnnneell IImmpprrooppeerrllyy iinnssttaalllleedd aanndd ggrroouunnddeedd

ffiieelldd wwiirriinngg ppoosseess FFIIRREE aanndd EELLEECCTTRROOCCUUTTIIOONN

hhaazzaarrddss TToo aavvooiidd tthheessee hhaazzaarrddss,, yyoouu MMUUSSTT ffoollllooww

rreeqquuiirreemmeennttss ffoorr ffiieelldd wwiirriinngg iinnssttaallllaattiioonn aanndd

ggrroouunnddiinngg aass ddeessccrriibbeedd iinn NNEECC aanndd yyoouurr llooccaall//

ssttaattee//nnaattiioonnaall eelleeccttrriiccaall ccooddeess

WWAARRNNIINNGG

PPeerrssoonnaall PPrrootteeccttiivvee EEqquuiippmmeenntt ((PPPPEE))

RReeqquuiirreedd!!

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uunnddeerrttaakkeenn ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy

TTeecchhnniicciiaannss,, iinn oorrddeerr ttoo pprrootteecctt tthheemmsseellvveess ffrroomm

ppootteennttiiaall eelleeccttrriiccaall,, mmeecchhaanniiccaall,, aanndd cchheemmiiccaall

hhaazzaarrddss,, MMUUSSTT ffoollllooww pprreeccaauuttiioonnss iinn tthhiiss mmaannuuaall

aanndd oonn tthhee ttaaggss,, ssttiicckkeerrss,, aanndd llaabbeellss,, aass wweellll aass tthhee

iinnssttrruuccttiioonnss bbeellooww::

•• BBeeffoorree iinnssttaalllliinngg//sseerrvviicciinngg tthhiiss uunniitt,,

tteecchhnniicciiaannss MMUUSSTT ppuutt oonn aallll PPPPEE rreeqquuiirreedd ffoorr

tthhee wwoorrkk bbeeiinngg uunnddeerrttaakkeenn ((EExxaammpplleess;; ccuutt

rreessiissttaanntt gglloovveess//sslleeeevveess,, bbuuttyyll gglloovveess,, ssaaffeettyy

ggllaasssseess,, hhaarrdd hhaatt//bbuummpp ccaapp,, ffaallll pprrootteeccttiioonn,,

eelleeccttrriiccaall PPPPEE aanndd aarrcc ffllaasshh ccllootthhiinngg))

AALLWWAAYYSS rreeffeerr ttoo aapppprroopprriiaattee MMaatteerriiaall SSaaffeettyy

DDaattaa SShheeeettss ((MMSSDDSS))//SSaaffeettyy DDaattaa SShheeeettss

((SSDDSS)) aanndd OOSSHHAA gguuiiddeelliinneess ffoorr pprrooppeerr PPPPEE

•• WWhheenn wwoorrkkiinngg wwiitthh oorr aarroouunndd hhaazzaarrddoouuss

cchheemmiiccaallss,, AALLWWAAYYSS rreeffeerr ttoo tthhee aapppprroopprriiaattee

MMSSDDSS//SSDDSS aanndd OOSSHHAA//GGHHSS ((GGlloobbaall

HHaarrmmoonniizzeedd SSyysstteemm ooff CCllaassssiiffiiccaattiioonn aanndd

LLaabbeelllliinngg ooff CChheemmiiccaallss)) gguuiiddeelliinneess ffoorr

iinnffoorrmmaattiioonn oonn aalllloowwaabbllee ppeerrssoonnaall eexxppoossuurree

lleevveellss,, pprrooppeerr rreessppiirraattoorryy pprrootteeccttiioonn aanndd

hhaannddlliinngg iinnssttrruuccttiioonnss

•• IIff tthheerree iiss aa rriisskk ooff eenneerrggiizzeedd eelleeccttrriiccaall

ccoonnttaacctt,, aarrcc,, oorr ffllaasshh,, tteecchhnniicciiaannss MMUUSSTT ppuutt

oonn aallll PPPPEE iinn aaccccoorrddaannccee wwiitthh OOSSHHAA,, NNFFPPAA

7700EE,, oorr ootthheerr ccoouunnttrryy--ssppeecciiffiicc rreeqquuiirreemmeennttss

ffoorr aarrcc ffllaasshh pprrootteeccttiioonn,, PPRRIIOORR ttoo sseerrvviicciinngg

tthhee uunniitt NNEEVVEERR PPEERRFFOORRMM AANNYY SSWWIITTCCHHIINNGG,,

DDIISSCCOONNNNEECCTTIINNGG,, OORR VVOOLLTTAAGGEE TTEESSTTIINNGG

WWIITTHHOOUUTT PPRROOPPEERR EELLEECCTTRRIICCAALL PPPPEE AANNDD

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PPRROOPPEERRLLYY RRAATTEEDD FFOORR IINNTTEENNDDEEDD

VVOOLLTTAAGGEE

AC-SVX002C-EN 3

WWAARRNNIINNGG

FFoollllooww EEHHSS PPoolliicciieess!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinn

ddeeaatthh oorr sseerriioouuss iinnjjuurryy

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IInnggeerrssoollll RRaanndd EEnnvviirroonnmmeennttaall,, HHeeaalltthh aanndd

SSaaffeettyy ((EEHHSS)) ppoolliicciieess wwhheenn ppeerrffoorrmmiinngg wwoorrkk

ssuucchh aass hhoott wwoorrkk,, eelleeccttrriiccaall,, ffaallll pprrootteeccttiioonn,,

lloocckkoouutt//ttaaggoouutt,, rreeffrriiggeerraanntt hhaannddlliinngg,, eettcc AAllll

ppoolliicciieess ccaann bbee ffoouunndd oonn tthhee BBOOSS ssiittee WWhheerree

llooccaall rreegguullaattiioonnss aarree mmoorree ssttrriinnggeenntt tthhaann

tthheessee ppoolliicciieess,, tthhoossee rreegguullaattiioonnss ssuuppeerrsseeddee

tthheessee ppoolliicciieess

•• NNoonn--IInnggeerrssoollll RRaanndd ppeerrssoonnnneell sshhoouulldd aallwwaayyss

ffoollllooww llooccaall rreegguullaattiioonnss

WWAARRNNIINNGG

RR--441100AA RReeffrriiggeerraanntt uunnddeerr HHiigghheerr

PPrreessssuurree tthhaann RR--2222!!

FFaaiilluurree ttoo uussee pprrooppeerr eeqquuiippmmeenntt oorr ccoommppoonneennttss aass

ddeessccrriibbeedd bbeellooww,, ccoouulldd rreessuulltt iinn eeqquuiippmmeenntt ffaaiilliinngg

aanndd ppoossssiibbllyy eexxppllooddiinngg,, wwhhiicchh ccoouulldd rreessuulltt iinn

ddeeaatthh,, sseerriioouuss iinnjjuurryy,, oorr eeqquuiippmmeenntt ddaammaaggee

TThhee uunniittss ddeessccrriibbeedd iinn tthhiiss mmaannuuaall uussee RR--441100AA

rreeffrriiggeerraanntt wwhhiicchh ooppeerraatteess aatt hhiigghheerr pprreessssuurreess

tthhaann RR--2222 UUssee OONNLLYY RR--441100AA rraatteedd sseerrvviiccee

eeqquuiippmmeenntt oorr ccoommppoonneennttss wwiitthh tthheessee uunniittss FFoorr

ssppeecciiffiicc hhaannddlliinngg ccoonncceerrnnss wwiitthh RR--441100AA,, pplleeaassee

ccoonnttaacctt yyoouurr llooccaall TTrraannee rreepprreesseennttaattiivvee

Factory Warranty In ormation

Compliance with the following is required to preserve

the factory warranty:

AAllll UUnniitt IInnssttaallllaattiioonnss

Startup MUST be performed by Trane, or an authorized

agent of Trane, to VALIDATE this WARRANTY

Contractor must provide a two-week startup

notification to Trane (or an agent

This document and the information in it are the

property of Trane, and may not be used or reproduced

in whole or in part without written permission Trane

reserves the right to revise this publication at any time,

and to make changes to its content without obligation

to notify any person of such revision or change

Trademarks

All trademarks referenced in this document are the

trademarks of their respective owners

Factory Training

Factory training is available through Trane University™

to help you learn more about the operation and

maintenance of your equipment To learn about

available training opportunities contact Trane

University™

Online: www trane com/traneuniversity

Phone: 855-803-3563

Email: traneuniversity@trane com

Revision History

Added model number description information that had

been inadvertently deleted in previous revision

IInnttrroodduuccttiioonn

4AC-SVX002C-EN

Model Number Information 6

Nameplates 6

Unit Nameplate 6

Model Number Coding System 6

Compressor Nameplate 6

Model Number Descriptions 7

Unit Model Number 7

Compressor Information 8

Model Number 8

General Information 9

Unit Description 9

General Data 9

Pre-Installation 12

Unit Inspection 12

Exterior Inspection 12

Inspection for Concealed

Damage 12

Repair 12

Unit Storage 12

Installation Requirements 13

Dimensions and Weights 14

Unit Dimensions 14

Standard Unit 14

Units with Pump Package

Option 15

Service Clearance 16

Weights 16

Installation - Mechanical 17

Location Requirements 17

Sound Considerations 17

Foundation 17

Clearances 17

Lifting and Moving Instructions 17

Center of Gravity 19

Isolation and Sound Emission 19

Unit Isolation and Leveling 19

Elastomeric Isolators 20

Mounting Locations, Weights,

Isolators 20

Evaporator Piping 22

Evaporator Piping Components 22

Evaporator Label 24

Pressure Drop Curves 25

Pump Curves 27

Freeze Avoidance 29

Low Evaporator Refrigerant Cutout,

Glycol Requirements 30

High Head Pump Package 33

Expansion Tank 35

Installation Electrical 36

General Recommendations 36

Installer-Supplied Components 36

Power Supply Wiring 37

Control Power Supply 37

Heater Power Supply 37

Water Pump Power Supply 38

Interconnecting Wiring 38

Chilled Water Flow (Pump)

Interlock 38

Chilled Water Pump Control 38

Lead/Lag Dual Pump 38

Programmable Relays 38

Relay Assignments Using Tracer TU 39

Low Voltage Wiring 40

Emergency Stop 40

External Auto/Stop 40

Ice Building Option 40

External Chilled/Hot Water Setpoint

(ECHWS) Option 41

External Demand Limit Setpoint

(EDLS) Option 41

EDLS and ECHWS Analog Input

Signal Wiring 42

Chilled Water Reset (CWR) 42

Communications Interface 43

LonTalk Interface (LCI-C) 43

BACnet Interface (BCI-C) 43

Modbus Remote Terminal Unit

Interface 43

Operating Principles 44

General 44

Table o Contents

AC-SVX002C-EN 5

Refrigerant Cycle 44

Oil System 44

Condenser and Fans 44

Controls 45

Overview 45

UC800 Specifications 45

Wiring and Port Descriptions 45

Communication Interfaces 46

Rotary Switches 46

LED Description and Operation 46

Tracer AdaptiView TD7 Display 48

Operator Interface 48

Home Screen 48

Viewing Chiller Operating

Modes 48

Alarms 52

Reports 52

Equipment Settings 54

Display Settings 55

Security Settings 57

InvisiSound Ultimate — Noise

Reduction Mode 58

Tracer TU 58

Integrated Rapid Restart 59

Pre-Start 60

Start-up and Shutdown 61

Unit Start-up 61

Temporary Shutdown And Restart 61

Extended Shutdown Procedure 61

Seasonal Unit Start-up Procedure 62

System Restart After Extended

Shutdown 62

Sequence of Operation 64

Software Operation Overview 64

Power Up Diagram 64

Power Up to Starting 65

Stopped to Starting 66

Normal Shutdown to Stopped or

Run Inhibit 67

Maintenance 68

Recommended Maintenance 68

Weekly 68

Monthly 68

Annual 68

Refrigerant and Oil Charge

Management 69

Lubrication System 69

Oil Level 69

Oil Testing 69

Condenser Maintenance 69

Condenser Coil Cleaning 69

Repair/Replacement of Microchannel

Coil 70

Condenser Coil Corrosion Protection

Inspection 70

Evaporator Maintenance 70

Water Strainer Maintenance 70

Units without Pump Package 70

Units with Pump Package 71

Pump Package Maintenance 71

Diagnostics 72

General Diagnostics Information 72

Main Processor Diagnostics 72

Sensor Failure Diagnostic 79

Communication Diagnostics 80

Unit Wiring 84

Log and Check Sheets 85

Ascend™Model ACS Installation

Completion Check Sheet and Request for

Trane Service 86

TTaabbllee ooff CCoonntteennttss

6AC-SVX002C-EN

Model Number In ormation

Nameplates

Unit nameplates are applied to the exterior of the

control panel A compressor nameplate is located on

each compressor When the unit arrives, compare all

nameplate data with ordering, submittal, and shipping

information

Unit Nameplate

See figure below for a typical unit nameplate The

outdoor unit nameplate provides the following

information:

• Unit model and size description

• Unit serial number

• Unit electrical requirements

• Operating charges of R-410A and refrigerant oil

• Unit design pressures

• Installation, operation and maintenance and service

data literature

• Drawing numbers for unit wiring diagrams

Model Number Coding System

Model numbers are composed of numbers and letters

that represent features of the equipment Shown below

is a sample of typical unit model number

ACSA 1802 EUA0 XUXA XNB2 ACAH SMEX 1TAB

LXTA X1X4 XX0

Each position, or group of positions, in the model

number is used to represent a feature Unit model

number digits are selected and assigned in accordance

with the definitions as listed in Model Number

Descriptions chapter For example, position 08 of the

unit model number above contains the letter “E” which

indicates the unit voltage is 460/60/3

Compressor Nameplate

The compressor nameplate provides the following

information:

• Compressor model number

• Compressor serial number

• Compressor electrical characteristics

• Utilization range

• Recommended refrigerant

See Model Number Descriptions chapter for

compressor model and serial number descriptions

AC-SVX002C-EN 7

Model Number Descriptions

Unit Model Number

Digit 1, 2, 3, 4 — Unit Model

ACSA = Air-Cooled Scroll Chiller

Digit 5, 6, 7 — Nominal Tonnage

140 = 140 Tons

160 = 160 Tons

180 = 180 Tons

200 = 200 Tons

215 = 215 Tons

230 = 230 Tons

Digit 8 — Compressor Type

2= Scroll with Variable Volume Ratio

Digit 9— Unit Voltage

A= 200/60/3

B= 230/60/3

E= 460/60/3

F= 575/60/3

Digit 10— Manufacturing Location

U= Trane Commercial Systems, Pueblo, CO

USA

Digits 11, 12 — Design Sequence

** = Factory assigned

Digit 13 — Unit Sound Package

X= Standard Unit

L= Superior

R= Standard with Noise Reduction Request

Q= Superior with Noise Reduction Request

Digit 14 — Agency Listing

U=UL/cUL Listing

C= No Agency Listing

Digit 15 — Pressure Vessel Code

X= Not Applicable

Digit 16 — Factory Charge

A= Refrigerant Charge R-410A

B= Nitrogen Charge

Digit 17 — Auxiliary Items

X= No Auxiliary Items

Digit 18 — Evaporator Application

N= Standard Cooling (above 40°F)

P= Low Temp Process Cooling (below 40°F)

C= Ice Making

Digit 19, 20 — Evaporator Type

B2 = Brazed Plate Heat Exchanger

(Standard)

Digit 21 — Water Connection

X= Grooved Pipe

A= Grooved Pipe + Flange Adapter

Digit 22 — Flow Switch Set Point

C= Flow Switch Setpoint 15

F= Flow Switch Setpoint 35

H= Flow Switch Setpoint 45

L= Flow Switch Setpoint 60

Digit 23 — Insulation

A= Factory Insulation — All Cold Parts 0.75

inch

B= Evaporator-Only Insulation for High

Humidity/Low Evap Temp 1.25 inch

Digit 24 — Unit Application

X= Standard Ambient (32 to 115°F)

L= Low Ambient (–20 to 115°F)

H= High Ambient (32 to 130°F)

W= Wide Ambient (–20 to 130°F)

Digit 25 — Condenser Length

S= Standard

Digit 26 — Condenser Fin Options

M= Aluminum Microchannel

C= CompleteCoat™Microchannel

Digit 27 — Fan Type

E= EC Condenser Fan Motors

Digit 28 — Compressor Starter

X= Across-the-Line Starter

Digit 29 — Incoming Unit Power Line

Connection

1= Single Point Unit Power Connection

Digit 30 — Power Line Connection

Type

T= Terminal Block

H= Circuit Breaker with High Fault Rated

Control Panel

Digit 31 — Short Circuit Current

Rating

A= Default Short Circuit Rating

B= High Short Circuit Rating

Digit 32 — Electrical Accessories

X= None

U= Under/Over Voltage Protection

C= 15A – 115V Convenience Outlet

B= Convenience Outlet and Under/Over

Voltage Protection

Digit 33 — Remote Communications

Options

X= None

B=BACnet®Interface

M= Modbus™Interface

L= LonTalk®Interface

Digit 34 —Hard Wire Communication

X= None

A= Hard Wired Bundle — All

D= Unit Status Programmable Relay

Digit 35 — Smart Flow Control

X= None

T= Variable Primary Flow (Constant Delta T)

Digit 36 — Structural Options

A= Standard Unit Structure

Digit 37 — Appearance Options

X= No Appearance Options

Digit 38 — Unit Isolation

X= None

1= Elastomeric Isolators

8AC-SVX002C-EN

Digit 39 — Shipping Package

X= No Shipping Package

T= Tarp Covering Full Unit

Digit 40 — Pump Package

X= No Pump Option

2= Single Pump, High Pressure, Single VFD

4= Dual Pump, High Pressure, Dual VFD

Digit 41— Not Used

X= Selection1

Digit 42— Not Used

X= Selection1

Digit 43 — Special Requirement

0= None

S= Special Requirement

F= Ship to Final Finisher

Compressor In ormation

Model Number

Digit 1, 2, 3 — Compressor Type

DSH = Danfoss

Digit 4, 5, 6 — Capacity

381 = 30 tons

485 = 40 tons

Digit 7 — Agency Approval

A= UL

Digit 8 — Voltage

3= 200–230V/60Hz/3ph

4= 460V/60Hz/3ph

7= 575V/60Hz/3ph

Digit 9, 10 — Custom

AT = Trane Pueblo

AT = Trane Epinal

MMooddeell NNuummbbeerr DDeessccrriippttiioonnss

AC-SVX002C-EN 9

General In ormation

Unit Description

Ascend™Model ACS units are scroll type, air-cooled,

liquid chillers, designed for installation outdoors Each

unit has two independent refrigerant circuits, with two

or three compressors per circuit The chillers are

packaged with an evaporator and condenser

NNoottee:: Each unit is a completely assembled, hermetic

-compressors packaged unit that is factory-piped,

wired, leak-tested, dehydrated, charged and

tested for proper control operations prior to

shipment. The chilled water inlet and outlet

openings are co ered for shipment.

The chiller features Tracer®UC800 controls to monitor

the control variables that govern the operation of the

chiller unit Adaptive Control logic can correct these

variables, when necessary, to optimize operational

efficiencies, avoid chiller shutdown, and keep

producing chilled water Each refrigerant circuit is

provided with filter, sight glass, electronic expansion

valve, and charging valves The evaporator is a brazed

plate heat exchanger equipped with water drain and

vent connections in the water piping The condenser is

an air-cooled slit or serpentine fin coil, arranged in a

transverse V layout

General Data

Table 1. General data (I-P)

Unit Size (tons) 140 160 180 200 215 230

Compressor Model

Quantity # 4 4 6 6 6 6

Tonnage/ckt(a) 30+40 40+40 30+30+30 30+30+40 30+40+40 40+40+40

Evaporator

Water storage gal 17.4 17.4 17.4 17.4 17.4 21.6

Min. flow(b) gpm 168 192 216 240 258 276

Max. flow(b) gpm 504 576 648 720 774 828

Water connection in 4 4 4 4 4 4

Condenser

Quantity of coils # 8 8 10 10 12 12

Coil length in 75 75 75 75 75 75

Coil height in 49 49 49 49 49 49

Tube width in 1 1 1 1 1 1

Fins per foot fpf 276 276 276 276 276 276

Fan

Quantity # 8 8 10 10 12 12

Diameter in 36 36 36 36 36 36

Airflow per fan cfm 11337 11334 11336 11334 11337 11335

Power per motor HP 3.0 3.0 3.0 3.0 3.0 3.0

Motor RPM rpm 820 820 820 820 820 820

Tip speed ft/min 7728 7728 7728 7728 7728 7728

General Unit

Refrigerant circuits # 2 2 2 2 2 2

Capacity steps %21-43-

71-100

25-50-

75-100

17-33-50-

67-83-100

15-30-50-

65-80-100

14-32-50-

64-82-100

17-33-50-

67-83-100

Min ambient - low/wide °F -20 -20 -20 -20 -20 -20

Min ambient - std/high °F 32 32 32 32 32 32

Refrig charge/ckt(a) lb 63 72 81 90 96.8 103.5

Oil charge/ckt(a) gal 3.2 3.2 4.8 4.8 4.8 4.8

Pump Package (Single Pump)

10 AC-SVX002C-EN

Table 1. General data (I-P) (continued)

Unit Size (tons) 140 160 180 200 215 230

Avail Head Pressure(c) ft H20 95 99 89 90 101 91

Power per motor HP 21.4 22.3 23.2 27.3 27.1 26.3

Pump Package (Twin Pump)

Avail Head Pressure(c) ft H20 91 94 82 82 92 80

Power per motor HP 20.9 22.6 22.9 27.1 26.3 26.5

(a) Data shown for one circuit only. The second circuit always matches.

(b) Minimum and maximum flow rates apply to constant-flow chilled water system running at AHRI conditions, without freeze inhibitors added to the water

loop.

(c) Pump available head pressure is based on 44/54° evaporator water, .0001 hr-ft-°F/Btu, 95°F ambient and 0 ft. elevation.

GGeenneerraall IInnffoorrmmaattiioonn

Inhaltsverzeichnis

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