Emerson Liebert Challenger Itr Brochure

ITR to the manual 24406072-7a2e-4b63-bbc0-cc683d98850f

: Emerson Emerson-Liebert-Challenger-Itr-Brochure-165173 emerson-liebert-challenger-itr-brochure-165173 emerson pdf

Open the PDF directly: View PDF .
Page Count: 74

Download
Open PDF In Browser	View PDF

Precision Cooling
For Business-Critical Continuity™

Liebert® Challenger™ ITR
Technical Data Manual - Row-Based, Floor-Mounted Nominal 23 or 33kW Systems, Air-Cooled,
Water/Glycol-Cooled, GLYCOOL, Chilled Water, Split Systems, 50 & 60 Hz

PRODUCT NOMENCLATURE
NOTE
Tables i, ii and iii show nomenclature for the complete range of all available product options.
Not all combinations are possible. For assistance, contact your local dealer, Liebert
representative or call 1-800-543-2778.
Table i

Product model information

B

F

042

Challenger R = ITR,
ITR
Horizontal Flow
M = ITR,
Horizontal Flow
with Econ-O-Coil

A

—

Nominal
A-=Air-Cooled
capacity in
thousand
BTUH
C-= Chilled
Water

A

A

E

I

A = 460/60/3

A = Advanced 0 = No Reheat
Microprocessor

0 = No
Humidifier

B = 575/60/3

G = Advanced E = Electric
Microprocessor Reheat
w/Graphics
H = Hot Water
Reheat

I = Infrared
Humidifier

E- = Evaporator

C = 208/60/3

G-= GLYCOOL

D = 230/60/3

WG = WaterCooled/Glycolcooled

2 = 380/60/3

S = Steam
Generating
Humidifier

G = Hot Gas
Reheat
S = SCR
Reheat

J = 200/50/3
H = 230/50/3
M = 380/415/50/3

Table ii

Split system configurations
Condensing Units

Evaporator
60 Hz
(50 Hz)

Table iii

BR060E
(BR059E)

Air-Cooled Prop Fan
Condensing Unit

Air-Cooled
Centrifugal
Condensing Unit

Water/Glycol
Condensing Unit

PFH067A_ _H3
PFH066A_ _H3

MC_65A
(MC_64A)

MC_69W
(MC_68W)

Self-contained system configurations
Remote Equipment

Frequency

Indoor Unit

60 Hz (50 Hz)

BR067A (BR065A)

60 Hz (50 Hz)

BR071WG (BR070WG)

60 Hz (50 Hz)

BM061G (BM058G)

60 Hz (50 Hz)

BR102C (BR101C)

@
F = Fan Speed Control
L = Lee Temp

Air-Cooled
Condenser

Drycooler/Pump

CS@104

System Type
Air-Cooled

DSF112
3/4 HP Pump 60 Hz
1-1/2 HP Pump 50 Hz
DSO112
1-1/2 HP Pump

Glycol-Cooled or SelfContained - Water-Cooled
GLYCOOL™
Self-Contained - Chilled
Water

TABLE OF CONTENTS
PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSIDE FRONT COVER
1.0

DEDICATED, PRECISE ENVIRONMENTAL CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.1

Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2

Humidity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3

Air Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.4

Air Filtration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.5

Year Round Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.6

Agency Listed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.0

PRECISION ENVIRONMENTAL CONTROL FOR INDUSTRIAL, TELECOMMUNICATIONS,
MEDICAL AND DATA PROCESSING EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2.1

Liebert Challenger ITR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.2

Multiple Configurations to Fit a Variety of Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.3

Efficiency in Economic Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.4

GLYCOOL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3.0

LOCAL MONITORING SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3.1

Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.2

Control Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.3

Internal System Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.4

Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.5

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.6

Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.7

Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.8

Graphical Displays—Advanced Graphic Control Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4.0

STANDARD FEATURES—ALL SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

4.1

Cabinet and Frame. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4.2

Electrical Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4.3

Fan Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4.4

Infrared Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4.5

Electric Reheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4.6

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.6.1
4.6.2
4.6.3

Condensate Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Temperature/ Humidity Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Disconnect Switch—Locking Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5.0

CHILLED WATER SYSTEM—STANDARD AND OPTIONAL FEATURES . . . . . . . . . . . . . . . . . . .9

5.1

Chilled Water System—Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1.1
5.1.2
5.1.3
5.1.4

Cooling Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Modulating Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Three-Way Control Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
i

9
9
9
9

5.2

Chilled Water System—Optional Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.2.1
5.2.2

Chilled Water Flow Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
High Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

6.0

REFRIGERATION SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.1

Self-Contained Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.2

Split Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.3

Refrigeration System Components—Standard Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.3.1
6.3.2
6.3.3
6.3.4

Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evaporator Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expansion Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10
10
10
10

7.0

AIR-COOLED SYSTEM—STANDARD AND OPTIONAL FEATURES . . . . . . . . . . . . . . . . . . . . . 11

7.1

Air-Cooled, Self-Contained Systems—Standard Features. . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1.1
7.1.2
7.1.3

7.2

Air-Cooled, Self-Contained Systems—Optional Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.2.1
7.2.2

7.3

Pump Down Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Fan Speed Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Liebert Lee-Temp Winter Control Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Quiet-Line Condensers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Air-Cooled Split Systems—Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.3.1
7.3.2
7.3.3

Centrifugal Fan, Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Propeller Fan Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Propeller Fan Condensing Unit Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.4

Air-Cooled Split Systems—Optional Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

8.0

WATER/GLYCOL-COOLED SYSTEMS—STANDARD AND OPTIONAL FEATURES . . . . . . . . . . . 13

8.1

Water/Glycol Self-Contained Systems—Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . 13

8.2

Water/Glycol-Cooled, Self-Contained System—Optional Features . . . . . . . . . . . . . . . . . . . . 13

8.3

Water/Glycol Split System—Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

8.4

Water/Glycol-Cooled, Split System—Optional Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.4.1
8.4.2

Glycol-Cooled System—Heat Rejection Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Self-Contained and Split Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

9.0

GLYCOOL SYSTEMS—STANDARD AND OPTIONAL FEATURES . . . . . . . . . . . . . . . . . . . . . 15

9.1

GLYCOOL—Self-Contained Models Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

9.2

GLYCOOL System—Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9.2.1
9.2.2
9.2.3
9.2.4
9.2.5

Comparative Temperature Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Econ-O-Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GLYCOOL Three-Way Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glycol-Regulating Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drycooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15
15
15
15
16

9.3

Glycol and GLYCOOL-Cooled—Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

10.0

OPTIONAL EQUIPMENT—ALL SYSTEMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

10.1

Steam Generating Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

10.2

Adjustable Floor Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

ii

10.3

SCR Reheat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

10.4

High-Efficiency Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

10.5

High External Static Blowers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

10.6

High-Efficiency Motors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

10.7

Plenums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

10.8

Low-Profile Plenum with Cold-Aisle Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

10.9

Smoke Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

10.10 Firestat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
10.11 Hot Water Reheat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

11.0

COMPREHENSIVE MONITORING SYSTEMS—OPTIONAL . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

11.1

Enterprise Monitoring Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

11.2

Network Monitoring Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

11.3

Stand-Alone Monitoring and Leak Detection Solutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

12.0

COMPREHENSIVE MONITORING SOLUTIONS—OPTIONAL . . . . . . . . . . . . . . . . . . . . . . . . . . 22

12.1

Liebert SiteScan® Web. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

12.2

Liebert SiteLink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

12.3

Liebert Nform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

12.4

Liebert IntelliSlot Web/485 Card With Adapter and Liebert IntelliSlot 485 Card
With Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

12.5

Environmental Discrete Outputs Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

12.6

Remote Contact Monitor (RCM4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

12.7

Auto-Changeover Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

12.8

Universal Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
12.8.1 Leak Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
12.8.2 Temperature and Humidity Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

13.0

SYSTEM DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

14.0

DIMENSIONAL DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

15.0

ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

GUIDE SPECIFICATIONS—NOMINAL 23 OR 33KW ENVIRONMENTAL CONTROL
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSIDE FRONT COVER

iii

FIGURES
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17

Unit configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unit configurations, continued. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Microprocessor control systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Optional Views With Advanced Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Air-cooled condenser with Liebert Lee-Temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Outdoor propeller fan condensing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Liebert Challenger ITR unit core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Steam generating humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Adjustable floor stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Monitoring configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Cabinet and floor planning dimensional data—Horizontal flow models . . . . . . . . . . . . . . . . . . . . 38
Cabinet and floor planning dimensional data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Cabinet and floor planning dimensional data—Split system—5-ton centrifugal fan
condensing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Cabinet and floor planning dimensional data—Split system—5-ton water/glycol-cooled
condensing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Cabinet and floor planning dimensional data—Split System—Propeller fan condensing
unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Cabinet and floor planning dimensional data—Propeller fan condensing
modules—Vertical air discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Cabinet and floor planning dimensional data—Self-contained system—Air-cooled
condenser or drycooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

TABLES
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Table 8
Table 9
Table 10
Table 11
Table 12
Table 13
Table 14
Table 15
Table 16
Table 17
Table 18
Table 19
Table 20
Table 21
Table 22
Table 23
Table 24
Table 25

Condensate pump capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Liebert Challenger ITR air-cooled data—60 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Liebert Challenger ITR air-cooled data—60 Hz (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Liebert Challenger ITR air-cooled data—50 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Liebert Challenger ITR air-cooled data—50Hz (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Liebert Challenger ITR water cooled data, 60 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Liebert Challenger ITR water cooled data, 60 Hz (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Liebert Challenger ITR water cooled data, 50 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Liebert Challenger ITR water cooled data, 50 Hz (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Liebert Challenger ITR glycol cooled data, 60 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Liebert Challenger ITR glycol cooled data, 60 Hz (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Liebert Challenger ITR glycol cooled data, 50 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Liebert Challenger ITR glycol cooled data, 50 Hz (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Liebert Challenger ITR chilled water data, 60 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Liebert Challenger ITR chilled water data, 50 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Liebert Challenger ITR electrical data1—60 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Self-contained with SCR reheat * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Scroll compressor and main fan (for comparison purposes only) * . . . . . . . . . . . . . . . . . . . . . . . . 45
Outdoor condensing units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Outdoor condensing units—Quiet-Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Indoor condensing units, air-cooled *. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Indoor condensing units, water-cooled * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Fan speed control condensers * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Liebert Lee-Temp condensers * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Liebert Lee-Temp receiver heater pads for use w/CSL condensers . . . . . . . . . . . . . . . . . . . . . . . . 47

iv

Table 26
Table 27
Table 28
Table 29
Table 30
Table 31
Table 32
Table 33
Table 34
Table 35
Table 36
Table 37
Table 38

Drycooler and pump package - 95°F (35°C) ambient * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert Challenger ITR electrical data—50 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scroll compressor and main fan (for comparison only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Self-contained with SCR reheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outdoor condensing units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor condensing units air-cooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor condensing units water-cooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fan speed control condensers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert Lee-Temp condensers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert Lee-Temp receiver heater pads; for use w/CSL condensers . . . . . . . . . . . . . . . . . . . . . . .
Drycooler only - 35°C (95°F) ambient, three-phase. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drycooler only - 35°C (95°F) ambient, single phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

v

47
48
49
49
50
50
50
50
50
50
51
51
51

vi

Dedicated, Precise Environmental Control

1.0

DEDICATED, PRECISE ENVIRONMENTAL CONTROL
For sensitive electronics, environmental control is more than simple cooling. “Comfort” air conditioning systems are designed for the comfort of people and simply cannot provide the kind of environment
required by high performance computer or communication equipment.

1.1

Temperature Control
The high density heat load in a computer room or other similar application is beyond the capacity of
ordinary air conditioning systems.
Sensitive electronics are best maintained in a stable environment of 72°F ±2°F (22.2°C ±1°C). Because
computers and communications equipment generate large quantities of heat in small areas, six to 10
times the heat density of normal office space, the air conditioning system must have more than just
enough cooling capacity. It must have the precision to react quickly to a drastic change in heat load
and prevent wide temperature fluctuations—something a large building system cannot do.

1.2

Humidity Control
The electronic equipment must be protected from both internal condensation and static electricity discharges.
Maintaining the correct humidity level in the room is just as important as maintaining proper temperature. When humidity is too high, condensation may form inside electronic equipment and damage
it. If humidity is too low, static electricity could disrupt operation or even shut down the electronic
system. An ordinary building system cannot normally control the environment within these boundaries.

1.3

Air Volume
Computers and other sensitive electronics require greater air volumes than ordinary air conditioning
can provide. Typical comfort systems are designed to provide between 300 and 400 CFM (cubic feet
per minute), (500–700 CMH) per ton of cooling. Computer systems require between 500 and 600 CFM
(850–1020 CMH) per ton. The high density heat load in a relatively small space requires more
changes of air than a less dense “comfort” application.
While a normal office space requires only two air changes per hour, a room filled with electronic
equipment requires up to 30 changes per hour. Without proper air volume, hot spots and temperature
fluctuations could develop within the room. Also, greater air volumes provide the higher sensible heat
ratios required by electronic computer equipment.

1.4

Air Filtration
A clean environment of properly filtered air is essential. Build-up of dust and fibers attracted by operating electronics can cause faults and impair the operation of electromechanical devices, such as
switches and disk drives.
In short, today’s electronics need the same precision environmental control that mainframe computers need. The difference is that instead of one large computer room there are several small, often
crowded rooms, widely dispersed throughout a building, plant or campus. Conditions and requirements can vary widely.

1.5

Year Round Operation
Comfort conditioning systems cannot be relied upon 24 hours per day 365 days per year. They are typically designed to operate 10 hours per day, from spring to autumn. Many “comfort” systems have no
provision for winter operation. A precision environmental control system is designed for operation at
temperatures down to -30°F (-34.4°C).

1.6

Agency Listed
Standard 60 Hz units are CSA (NRTL-C) certified. NRTL-C meets both U.S. and
Canadian government safety requirements, providing fast, problem-free inspection and building code approvals. The units are also MEA listed for New York
City applications.

1

Precision Environmental Control for Industrial, Telecommunications, Medical and Data Processing Equipment

2.0

PRECISION ENVIRONMENTAL CONTROL FOR INDUSTRIAL,
TELECOMMUNICATIONS, MEDICAL AND DATA PROCESSING EQUIPMENT
Data processing power is moving from the specialized environment of the computer room to the office
and the factory floor.
At the same time, the applications are growing exponentially. From yesterday’s spreadsheets and
word processors, micro- to mid-range computers control LANs and WANs, manage complex telecommunications systems, optimize manufacturing processes and facilitate sophisticated testing and laboratory functions.
Computers and sensitive electronics tend to be grouped, often in specialized rooms. This makes operation and service easier, but it also creates the need for precision environmental control—the coordinated management of temperature, humidity and air filtration.

2.1

Liebert Challenger ITR
Liebert Challenger ITR provides the precision and flexibility required by a broad range of applications.
• Microprocessor-based controls (with a choice of monitoring systems based on your needs) allow
you to select temperature and humidity ranges.
• A-frame coil (oriented to airflow) provides a large cooling surface area, and more precise control of
temperature and humidity.

2.2

Multiple Configurations to Fit a Variety of Spaces
Though electronic equipment rooms share some common protection requirements, their application
requirements can vary greatly. The room may or may not have a raised floor or an existing heat rejection loop. Budget and space requirements may limit the options a contractor has.

2.3

Efficiency in Economic Terms
The Liebert Challenger ITR occupies 9.8 square feet (.91 square meters) of floor space. It can be
located either between equipment racks or at the end of a row of racks. With room floor space valued
at a premium per square foot, the small footprint of the Liebert Challenger ITR makes economic good
sense.

2.4

GLYCOOL
GLYCOOL is a patented Liebert process that can significantly reduce energy costs during periods of
low outdoor temperatures.
The GLYCOOL system is a normal glycol system with the addition of a second cooling coil, known as
an Econ-O-Coil, in the air handling unit and a three-way valve. During colder months, the glycol solution returning from the outdoor drycooler is routed to the Econ-O-Coil and becomes the primary
source of cooling for the room. At ambient temperatures below 35°F (1.6°C), the cooling capacity is
sufficient to handle the total cooling needs of the room. Because the compressor is responsible for the
majority of the power consumption of the air conditioning unit, a GLYCOOL system can substantially
reduce energy costs.

2

Precision Environmental Control for Industrial, Telecommunications, Medical and Data Processing Equipment

Figure 1

Unit configurations

IMAGES ARE
ILLUSTRATIVE ONLY

Chilled Water, Self-Contained System

Water-Cooled, Self-Contained System

Plenum
Available in two-way,
three-way and four-way
Free Discharge Grilles,
Solid Plenum for ducting
or low-profile, cold-aisle
discharge plenum

Condenser
Water Pipes

V-Frame
Coil
V-Frame
Coil
Scroll
Compressor

Condenser

Air-Cooled, Self-Contained System
With Matching Condensers

Glycol-Cooled, Self-Contained System
With Matching Drycooler and Pump
Expansion Tank

Air-Cooled
Condenser

Drycooler

V-Frame
Coil

Scroll
Compressor

Glycol
Pump

Condenser

V-Frame Coil

Glycol Piping

Scroll Compressor

GLYCOOL-Cooled System
V-Frame
Coil

Expansion Tank
Drycooler

Integrated
GLYCOOL Coil

Scroll Compressor

Remote Condenser
Water Source (not
supplied by Liebert)

Condenser

Glycol
Pump

3

Glycol Piping

Precision Environmental Control for Industrial, Telecommunications, Medical and Data Processing Equipment

Figure 2

Unit configurations, continued
IMAGE IS
ILLUSTRATIVE ONLY

Split Systems Available

Indoor Glycol-Cooled
Condensing Unit

Scroll Compressor

Outdoor Prop-Fan
Air-Cooled Condensing Unit
Indoor Centrifugal Fan
Air-Cooled Condensing Unit

Remote Condenser
Water Source
(not supplied by Liebert)
Expansion Tank

Indoor Water-Cooled
Condensing Unit
V-Frame
Coil

Coaxial
Condenser

Scroll Compressor

4

Drycooler
Glycol Pump

Glycol Piping

Local Monitoring Systems

3.0

LOCAL MONITORING SYSTEMS
Two levels of microprocessor control systems are available providing precise control and monitoring of
the critical space.
The Advanced Microprocessor is standard, and the Advanced Microprocessor with Graphics
is optional. The main control functions are similar for both controls.

3.1

Control
The user must enter a three-digit password before making changes.
•
•
•
•
•
•
•
•

Temperature Setpoint 65-85°F (18-29°C)*
Temperature Sensitivity +1-10°F (0.6-5.6°C)
Humidity Setpoint 20-80% RH*
Humidity Sensitivity 1-30% RH
High Temperature Alarm 35-90°F (2-32°C)
Low Temperature Alarm 35-90°F (2-32°C)
High Humidity Alarm 15-85% RH
Low Humidity Alarm 15-85% RH

* The microprocessor may be set within these ranges; however, the unit may not be able to control to
extreme combinations of temperature and humidity.

3.2

Control Type
Factory set-up for Intelligent Control which uses “fuzzy logic” and “expert systems” methods. Proportional and Tunable PID are user selectable options.

3.3

Internal System Control
• Compressor short cycle control: Prevents compressor short-cycling and needless compressor
wear.
• System auto restart: The auto restart feature will automatically restart the system after a
power failure. Time delay is programmable.
• Sequential Load Activation: On initial start-up or restart after power failure, each operational
load is sequenced to minimize total inrush current.
• Hot Water / Econ-O-Coil Flush Cycles: Hot water reheat coils and Econ-O-Coils are periodically flushed to prevent a build-up of contaminants.
• Temperature/Humidity Sensor Calibration: The sensors may be calibrated from the front
monitor panel to insure that all units in the room are similarly calibrated, assuring greater precision.

3.4

Monitoring
• Normal display: Includes present room temperature and humidity, active functions (cooling,
heating, dehumidifying), and any alarms.
• Operating status: Displays each control operation in percent.
• Read analog inputs function: Displays the present values of up to four analog inputs.

3.5

Diagnostics
• Input diagnostics: Reviews inputs to the control system.
• Control board diagnostics: Initiates a self-test of the control system.
• Output diagnostics: Tests major components by turning them on and off from the control panel.
Includes: main fan, compressor, liquid line solenoid valve, hot gas bypass valve, chilled water or
chilled GLYCOOL valve, R-5 relay, reheat, hot water reheat valve, humidifier, humidifier makeup valve, and common alarm.

5

Local Monitoring Systems

3.6

Logging
• Alarm history log: The Advanced Microprocessor displays the 10 most recent alarms. The
Advanced Microprocessor with Graphics displays the most recent 60 alarms. Both provide a time
and date stamp for each event
• Run time log: Displays run time and hours for major components (also allows reset of run hours)
including compressors, GLYCOOL, fan, humidifier, and reheat.

3.7

Alarms
• Humidifier Problem
• High Head Pressure

• Short Cycle

• Change Filter

• Loss Of Power

• Loss of Air Flow

Figure 3

• Low Suction Pressure

Custom Alarm (Maximum of Four)

• High Temperature

• Water Under Floor

• Low Temperature

• Smoke Detected

• High Humidity

• Standby GC Pump On

• Low Humidity

• Loss Of Water Flow

• Compressor Overload—Optional

• Standby Unit On

• Main Fan Overload—Optional

• User-Customized Text

Microprocessor control systems

Advanced Microprocessor Control System.
Backlit 4 x 20 Liquid Crystal Display.

Advanced Microprocessor w/Graphics Control
System—Optional. Backlit 240 x 128 dot matrix
graphics display.

3.8

Graphical Displays—Advanced Graphic Control Only
• Individual plots of temperature, humidity and the four analog inputs.
• Bar graph plots of individual component run history by hour.
• Floor plan of optional water detection system layout including on alarm.
Status indication of operating modes with current temperature and humidity.

Figure 4

Optional Views With Advanced Graphics

Histograms–historical depictions–of temperature or
humidity can be displayed on the screen for analysis.
This is especially helpful in tracking the environmental
factors of an alarm.

The runtime screen provides data in either tabular
or easy-to-read graphic formats.

6

Standard Features—All Systems

4.0

STANDARD FEATURES—ALL SYSTEMS

4.1

Cabinet and Frame
The frame, 14 gauge, MIG welded tubular and formed steel, provides maximum support while 1"
(25.4mm) deep steel panels with 1-1/2 lb. (.68 kg) insulation protect and quiet the system. The front
door can be opened for service without shutting off the system. All components are accessible for service/maintenance through the front and rear of the unit.
The Liebert Challenger ITR’s resistance to corrosion is enhanced by the black, powder-coat finish to
all frame components. Exterior panels are similarly protected with durable powder-coating.

4.2

Electrical Panel
The high voltage compartment contains the contactors, transformers and overloads and all other
high-voltage components.
Each high voltage component is protected by a separate overcurrent protective device. The entire high
voltage panel is enclosed by a safety lock dead front panel. When the front door is opened by operating
personnel, the high voltage components remain enclosed for operator safety.

4.3

Fan Section
The Liebert Challenger ITR features a quiet, low speed fan assembly with double inlet blower, lifetime lubrication and self-aligning ball bearings. The motor and variable pitch drive are mounted on
an adjustable base. The entire blower/ motor assembly is mounted on vibration isolators for smoother
operation.
The draw-through design of the fan section provides even air distribution across the coil, controlled
air for bypass humidification, elimination of air bypass around the filters and low internal cabinet
pressure drop.

4.4

Infrared Humidifier
High-intensity quartz lamps over the stainless steel humidifier pan permit clean, particle-free vapor
to be added to the air within 5 to 6 seconds of the electronic call from the microprocessor control.
The quartz lamps provide radiant energy that evaporates water in a pure state, without solids.
The Infrared Humidifier is equipped with an automatic water supply system that significantly
reduces cleaning maintenance. This system has an adjustable water over-feed to prevent mineral precipitation. A drain valve is provided to easily empty the humidifier pan prior to inspection or servicing. A control valve regulates flow at water pressures between 5 and 150 psig (34.5 and 1034 kPa) and
includes a Y-strainer.

4.5

Electric Reheat
The two-stage 304 stainless steel reheat elements are a rigid, fin-tubular design that have extended
operation life. The reheat has ample capacity to maintain room dry-bulb conditions during a system
call for dehumidification. The two stages give an accurate, controlled response to the requirements of
the computer room. The low watt density, electrically enclosed elements are surrounded by the tube
and fins, reducing sheath temperatures and eliminating ionization.

4.6

Filters
The standard pleated 2" (51mm) filter with an efficiency of 20% (based on ASHRAE 52.1) can be
changed quickly and easily through the front of the unit.

7

Standard Features—All Systems

4.6.1

Condensate Pump
The condensate pump, mounted in the bottom of most units, is
used for unit drain water only. The condensate pump is complete
with sump, motor and pump assembly and automatic control.
The standard model has single float. A dual-float condensate
pump, which includes connections to unit, common alarm, unit
shutdown and one customer N/O contact is also available.
Table 1

4.6.2

Condensate pump capacity

Voltage

Hz

Capacity
GPH (l/s)

Head Pressure
ft. (kPa)

200/230

50

50 (189)

10 (30)

208/230

60

50 (189)

17 (51)

380/415

50

200 (757)

26 (78)

460

60

200 (757)

43 (128)

Remote Temperature/ Humidity Sensors
The remote temperature/ humidity sensors permit monitoring room conditions from an external
source. They are encased in an attractive case and are provided with a plug compatible shielded cable
in virtually any length.

4.6.3

Disconnect Switch—Locking Type
The locking disconnect switch, mounted in the electrical panel, is connected to the safety lock dead front panel of the system and is interlocked mechanically. In this way the panel can’t be opened until the
switch is in the off position. And it complies with local codes as well as
those of the NEC.

Disconnect Switch
(Locking)

8

Chilled Water System—Standard and Optional Features

5.0

CHILLED WATER SYSTEM—STANDARD AND OPTIONAL FEATURES

5.1

Chilled Water System—Standard Features

5.1.1

Cooling Coil
The chilled water cooling coil is designed for closed-loop applications using properly maintained
water. It is constructed of copper tubes and aluminum fins. To ensure quality, the V-frame coil is
manufactured to the highest standards in the industry.

5.1.2

Modulating Motor
The flow of chilled water through the cooling coil is controlled by an electronic modulating motor. The
microprocessor control will activate the motor when a need for cooling or dehumidification exists. The
motor will position the valve to precisely match the needs of the conditioned space.

5.1.3

Line Insulation
All chilled water piping within the Liebert Challenger ITR is fully insulated to assure full system
capacity and prevent condensation.

5.1.4

Three-Way Control Valve
The fully insulated control valve gives the conditioned space the precise cooling needed by electronic
equipment. Its unique design requires no overtravel linkages and never requires adjustment.

5.2

Chilled Water System—Optional Features

5.2.1

Chilled Water Flow Switch
The flow switch will activate the alarm system and/or shut down the system should the chilled water
supply be interrupted. The switch is factory wired and mounted in the chilled water valve compartment.

5.2.2

High Pressure
For special applications, a high-pressure, modulating three-way or two-way valve can be provided.
The valve is designed for 400 psig (2758 kPa) water pressure.

9

Refrigeration Systems

6.0

REFRIGERATION SYSTEMS
Two versions are available:
• Self-Contained Systems
• Split Systems

6.1

Self-Contained Systems
These systems feature a scroll compressor and controls, expansion valve, hot gas bypass and evaporator coil in the room unit.
Air-Cooled models also include a crankcase heater on the compressor and require field connection to
remote air-cooled condenser.
Water, Glycol and GLYCOOL models also include a coaxial condenser with field connections
required to the water or glycol coolant loop.
Water/Glycol models have two-way WRV with bypass.
GLYCOOL models have three-way WRV.

6.2

Split Systems
These systems feature the evaporator coil and expansion valve in the room unit, with the scroll compressor, and the condensing equipment located in one of several different types of pre-charged condensing units.

6.3

Refrigeration System Components—Standard Features

6.3.1

Compressor
The heart of the refrigeration system is the compressor.
All self-contained evaporator units and split system condensing units contain a high efficiency, quiet
operating scroll compressor. The compressors have internal vibration isolating mountings, pressure
safety controls and built-in overload protection.

6.3.2

Evaporator Coil
The evaporator coil is designed for the high sensible heat ratio required by electronic equipment
applications. The copper tube, aluminum fin coils are configured in a V-frame for smooth air flow
through the unit.

6.3.3

Safety Control
Every Liebert Challenger compressor has a high-pressure switch with an exclusive manual reset after
high pressure cut-out. This prevents cycling the compressor at high pressure, resulting in greater efficiency and longer compressor life.

6.3.4

Expansion Valve
The externally equalized thermostatic expansion valve smoothly controls the flow of refrigerant
through the coil and provides precise control of superheat.

10

Air-Cooled System—Standard and Optional Features

7.0

AIR-COOLED SYSTEM—STANDARD AND OPTIONAL FEATURES

7.1

Air-Cooled, Self-Contained Systems—Standard Features

7.1.1

Pump Down Control
The compressor pump-down control is accomplished by a liquid-line solenoid valve used in conjunction with a low pressure switch.

7.1.2

Condenser
The Liebert manufactured low profile, direct drive propeller fan type air-cooled condenser provides
quiet, efficient operation.
It is constructed of aluminum with a copper tube and aluminum fin coil for corrosion resistance. An
integral, factory wired and tested control panel reduces installation time.

7.1.3

Fan Speed Control
The winter control system features a variable speed motor and a specially designed solid-state fan
speed control transducer.
The transducer senses refrigerant pressure and varies the speed of the fan motor to maintain constant condensing temperature and system capacity. This system permits operation at ambient temperatures as low as -20°F (-29°C).

7.2

Air-Cooled, Self-Contained Systems—Optional Features

7.2.1

Liebert Lee-Temp Winter Control Condenser
The Liebert Lee-Temp winter control system’s heated receivers permit startup and positive head
pressure control at ambient temperatures as low as -30°F (-34.4°C). The Liebert Lee-Temp package
includes insulated receiver, a pressure relief valve, three-way head pressure control valves, and rotalock valves (see Figure 5 below).

7.2.2

Quiet-Line Condensers
Quiet-Line Condensers can help your facility meet the strictest noise codes, and do so at less cost than
traditional condensers with acoustical shielding.

Figure 5

Air-cooled condenser with Liebert Lee-Temp

Air-Cooled Condenser
Liebert Lee-Temp
Package (optional)

11

Air-Cooled System—Standard and Optional Features

7.3

Air-Cooled Split Systems—Standard Features

7.3.1

Centrifugal Fan, Condensing Unit
The centrifugal condensing unit’s copper-tube, aluminum-fin coil is equipped with low-temperature
controls to ensure year-round operation to -20°F (-29°C). The condensing unit is factory-wired,
charged and tested and is ready for final connections.
The centrifugal fan condensing unit includes scroll compressor, condenser coil, centrifugal blower
assembly, high-pressure switch and Liebert Lee-Temp head pressure control.
Condensing unit has hot gas bypass standard feature which bypasses hot gas around the compressor
directly to the suction side of the compressor to provide capacity control and reduce compressor
cycling. System includes liquid injection valve to maintain proper suction superheat.
Unit must be mounted indoors. Duct flanges are provided.

7.3.2

Propeller Fan Condensing Unit
The air-cooled condensing unit can be mounted on the roof or a ground level site. The condensing unit
housing is manufactured of galvanized steel with a powder coat finish. The copper-tube, aluminumfin coil is equipped with low temperature controls to assure year-round operation to -30°F (-34.4°C).
The condensing unit is completely factory-wired, charged and tested and is ready for final connections. (See illustration below)
The standard prop fan condensing unit includes scroll compressor, prop fan, high head pressure
switch, hot gas bypass and Liebert Lee-Temp head pressure control (for operation down to -30°F (39°C) ambient.)

Figure 6

7.3.3

Outdoor propeller fan condensing unit

Propeller Fan Condensing Unit Options
This unit is available in these optional configurations:
• 105°F (40°C) ambient for high ambient conditions.
• 95°F (35°C) ambient Quiet-Line for low noise level conditions below 58 dBa.

7.4

Air-Cooled Split Systems—Optional Features
Factory-installed, non-fused disconnect switch allows turning off the Challenger ITR for maintenance. Disconnect switch is available on indoor condensing units only.

12

Water/Glycol-Cooled Systems—Standard and Optional Features

8.0

WATER/GLYCOL-COOLED SYSTEMS—STANDARD AND OPTIONAL FEATURES

8.1

Water/Glycol Self-Contained Systems—Standard Features
Liquid-Cooled Condensers
A co-axial condenser provides ample capacity to handle the heat rejection needs of the system while
using a minimum of liquid and low total pressure drop.

Regulating Valves
Head pressure operated regulating valves accurately control the condensing temperature and maintain system capacity for various entering liquid flow rates and temperatures. Two-way valves with
bypass are standard.

8.2

Water/Glycol-Cooled, Self-Contained System—Optional Features
Three-way Regulating Valves
Three-way valves provide accurate control of condensing temperature and thus maintain constant
system capacity while also keeping the condenser water flow rate constant.

High Pressure
The high pressure option for the condenser circuit consists of a regulating valve and a condenser
rated at 350 psig (2413 kPa) water-pressure. This option is required in applications with large static
head pressures.

Compressor Crankcase Heater
A compressor crankcase heater is available to prevent the migration of refrigerant to the compressor
during off cycles.

Hot Gas Reheat
The hot gas reheat assembly consists of a three-way directional solenoid operated valve and a hot gas
reclaim coil.

70/30 Cu-Ni Econ-O-Coil
This coil replaces the standard copper tube coil to provide improved resistance to corrosion. This
option must be specified whenever a GLYCOOL or Dual Cooling Source system is applied to a cooling
tower loop or other open water system.

8.3

Water/Glycol Split System—Standard Features
Water/Glycol-Cooled Condensing Units
Factory charged and sealed, the water-cooled condensing unit is ready to be installed quickly and easily. The counter-flow coaxial condenser with two-way or three-way regulating valve designed for 150
psi (1034.3 kPa) is matched to the heat rejection requirements of the compressor for a variety of flow
rates and fluid temperatures.
Condensing unit has a hot gas bypass standard feature that bypasses hot gas around the compressor
directly to the suction side of the compressor to provide capacity control and reduce compressor
cycling. System includes liquid injection valve to maintain proper suction superheat.

13

Water/Glycol-Cooled Systems—Standard and Optional Features

8.4

Water/Glycol-Cooled, Split System—Optional Features
High Pressure
The high pressure option for the condenser circuit consists of a two-way or three-way water regulating valve and condenser rated at 350 psig (2413 kPa) water pressure. This option is required in applications with large static heads.

Factory Installed Non-Fused Disconnect Switch
Allows unit to be turned off for maintenance. Disconnect switch is available on indoor condensing
units only.

70/30 Cu-Ni Econ-O-Coil
This coil replaces the standard copper tube coil to provide improved resistance to corrosion. This
option must be specified whenever a GLYCOOL or Dual Cooling Source system is applied to a cooling
tower loop or other open water system.

8.4.1

Glycol-Cooled System—Heat Rejection Devices

8.4.2

Self-Contained and Split Systems
Fan Speed Control Drycooler
The Liebert manufactured Fan Speed Control drycooler is constructed of aluminum and features copper tubes and aluminum fin design. It is low profile, propeller fan type and provides quiet, trouble
free heat rejection. The drycooler features a variable speed fan motor and a specially engineered solid
state fan speed transducer. The transducer senses the temperature of the leaving glycol and modulates the speed of the fan to maintain proper glycol temperatures. An integral, factory-wired and
tested control panel reduces installation time.

Glycol Pump
The glycol system includes a matching centrifugal glycol pump. It is mounted in a vented, weatherproof enclosure. Optional Equipment—See page 16.

14

GLYCOOL Systems—Standard and Optional Features

9.0

GLYCOOL SYSTEMS—STANDARD AND OPTIONAL FEATURES

9.1

GLYCOOL—Self-Contained Models Only
The Liebert GLYCOOL free-cooling system is integrated with a glycol-cooled Liebert Challenger ITR.
At outdoor temperatures below 35°F (1.6°C), the Econ-O-Coil is capable of providing total system
capacity. At outdoor temperatures between 35° and 65°F (1.6° and 18.3°C), the unique modulating
valve permits partial cooling of the space by the Econ-O-Coil with the DX system picking up the rest
of the load. Above 65°F (18.3°C) the unit functions as a glycol unit and all the cooling is accomplished
by the DX system. When cooling is required, the three-way modulating valve and water regulating
valve direct glycol (from the heat rejection loop) to the Econ-O-Coil located upstream of the evaporator
coil, to the condenser, or to both.
The GLYCOOL system contains all the standard features of a glycol-cooled system plus the following.

9.2

GLYCOOL System—Standard Features

9.2.1

Comparative Temperature Monitor
A solid-state temperature monitor compares the room air temperature and entering glycol temperature. When air temperature is higher than glycol temperature, the monitor communicates to the
microprocessor control that “free-cooling” is available.

9.2.2

Econ-O-Coil
The Econ-O-Coil is strategically located in the return air stream of the environmental control system.
This coil is designed for closed-loop applications using properly treated glycol solutions. Applications
using a cooling tower loop or other open water system must specify a 70/30 Cu-Ni Econ-O-Coil for
improved corrosion resistance.
The air is first filtered before entering the coil and then is either precooled or totally cooled before
entering the refrigeration coil. The glycol flow to the coil is controlled by a pre-piped modulating
three-way valve. When supplied with a 45°F (7.2°C) glycol solution, the coil is sufficiently sized to
offer the identical cooling capacity as is obtained during the refrigeration cycle of the compressor.

9.2.3

GLYCOOL Three-Way Control Valve
The GLYCOOL Three-Way Control Valve opens full anytime the temperature of the glycol solution is
below room temperature, to take full advantage of all possible free cooling. As the outdoor ambient
drops, the three-way control valve modulates the flow to the Econ-O-Coil. It maintains constant temperature in the room and includes operating linkage and electronic motor. Unlike other valves of this
nature, there is no over travel linkage or end switches to be adjusted.

9.2.4

Glycol-Regulating Valve
A head pressure operated glycol regulating valve accurately controls the condensing temperature and
system capacity for various entering glycol temperatures. The valve has three-way action.

15

GLYCOOL Systems—Standard and Optional Features

9.2.5

Drycooler
The Liebert manufactured drycooler is constructed of aluminum with a copper tube aluminum fin
coil. The low profile design features multiple direct drive propeller type fans, balanced to the heat
rejection load. An integral, factory wired and tested control panel reduces installation time.

Figure 7

Liebert Challenger ITR unit core

Evaporator
Coil

Three-way GLYCOOL
Control Valve

Econ-O-Coil

9.3

Glycol and GLYCOOL-Cooled—Optional Equipment
High Pressure
For high pressure applications, the GLYCOOL system can be equipped with components rated at 300
psig (2069 kPa).
9.3.1

Dual Pump Package

The dual pump package features two full size glycol pumps, each capable of providing sufficient flow
for system operation. A flow switch will sense the loss of flow, should the lead pump fail, and automatically command the standby pump to start. The complete system includes dual pump housing, pumps,
lead-lag switch and flow switch (for field installation). The dual pump package provides redundancy,
protecting against costly downtime in the computer room.

Quiet-Line Drycoolers
Quiet-Line Drycoolers can help your facility meet the strictest noise codes, and do so at less cost than
traditional drycoolers with acoustical shielding.

16

Optional Equipment—All Systems

10.0 OPTIONAL EQUIPMENT—ALL SYSTEMS
10.1

Steam Generating Humidifier
Clean, pure steam is generated in a disposable canister that is complete with supply and drain valves,
electronic controls and steam distributor. The humidifier is provided with an automatic flush cycle to
lengthen service life. An indicator on the Liebert Challenger ITR monitor panel is activated when the
canister should be changed.

Figure 8

10.2

Steam generating humidifier

Adjustable Floor Stand
Available in heights from 9" to 24" (228.6 to 609.6mm) in 3" (76.2mm) increments, adjustable +1-1/2"
(38.1mm). Allows for installation and connection of the Liebert Challenger ITR prior to installation of
the raised floor.

Figure 9

Adjustable floor stand

NOTE
Some options or combinations of options may result in reduced air flow. Consult factory for
recommendations.

17

Optional Equipment—All Systems

10.3

SCR Reheat
This reheat uses stainless steel elements and also includes the necessary sensors and controls to provide variable heat output to help maintain tighter control of room conditions, especially in lightly
loaded applications. (Contact factory for available voltages.) Direct expansion units only.

10.4

High-Efficiency Filter
Four optional filters are available in lieu of standard package. A 4" (102mm) 20%, 30%, 40%-45% or
60%-65% filter may be specified. (Efficiency based on ASHRAE 52.1). 2" (51mm) 20% pre-filters may
also be specified.

10.5

High External Static Blowers
These blower/motor packages are available where external static pressures are up to 2.0 inches (500
Pa) on 60 Hz units, and up to 1.5 inches (370 Pa) on 50 Hz units. These blowers are rigidly mounted
for ducting directly to the blower housing.
(Consult the factory for specific applications.)

10.6

High-Efficiency Motors
These motors replace the standard efficiency motors to provide increased energy savings during operation (consult factory for specific efficiencies).

10.7

Plenums
Standard height of 18" (457mm) with top duct connection or two-way, three-way or 4-way grille discharge styles available.

Plenum With Two-Way Grille

10.8

Low-Profile Plenum with Cold-Aisle Discharge
This plenum is designed to distribute supply air to electronic equipment beside and across from the
cooling unit. In addition to air exiting the front of the plenum, internal baffles direct air through the
left-side and right-side discharge vents. Factory-supplied hardware allows air to be blocked from exiting one side of the plenum, allowing the cooling unit to be installed at the end of a row of equipment.

Low-Profile, Cold Aisle Discharge Plenum

18

Optional Equipment—All Systems

10.9

Smoke Detector
The smoke detector senses the return air, shuts down the unit upon detection, and sends visual and
audible alarm. Dry contacts are available for a remote customer alarm. This smoke detector is not
intended to function as or replace any room smoke detection system that may be required by local or
national codes.
Supervised smoke detectors are also available as an option. Consult factory.

10.10 Firestat
The firestat senses return air temperature of the system. Upon sensing high temperatures, the environmental control system is shut down. Required by codes in
certain areas.
Firestat

10.11 Hot Water Reheat
Controlled by a two-way solenoid valve from the microprocessor control panel, these economical reheats have
the capacity to maintain dry bulb conditions when the
system is calling for dehumidification. The system is
completely pre-piped and includes a control valve and
Y-strainer. The reheat coil is constructed of copper
tubes and aluminum fins.

19

Comprehensive Monitoring Systems—Optional

11.0 COMPREHENSIVE MONITORING SYSTEMS—OPTIONAL
You will find a full range of monitoring and control systems, communications modules designed to
interface Liebert equipment with a variety of building management systems, plus stand-alone monitoring, control and leak detection devices.

11.1

Enterprise Monitoring Systems
SiteScan Web is a comprehensive critical systems monitoring solution dedicated to ensuring reliability through graphics, event management and data extrapolation. The standard Web interface allows
users easy access from anywhere at anytime.
•
•
•
•
•
•

Single- and multi-site applications.
Event management and unit control.
Trend and historical data captures and reporting.
Full ASHRAE BACnet compatibility.
Java based.
Windows 2000 and XP compatible.

Liebert SiteLink®
• Connectivity to building management systems using Modbus and BACnet.
Liebert Site I/O™
• Integrates sensors and contacts.
Liebert Site TPI™
• Integrates non-Liebert equipment.

11.2

Network Monitoring Systems
The Liebert IntelliSlot® line of products leverages one-to-one unit connections and your existing network for a comprehensive monitoring solution for distributed equipment.
Liebert IntelliSlot Web/485 Card With Adapter
•
•
•
•

Monitoring option available for Liebert precision air conditioning units.
Web interface for viewing and control.
Modbus interface for building management systems.
SNMP interface for network management systems.

Liebert Nform™
•
•
•
•
•

11.3

Centralized monitoring of all Liebert SNMP enabled devices.
Event and alarm management.
Adaptable and configurable graphical user interface.
Integration of third-party SNMP enabled devices through custom Liebert services.
Windows NT, 2000 and XP compatible.

Stand-Alone Monitoring and Leak Detection Solutions
Autonomous microprocessor controlled modules are available to provide supervision, control and
remote notification of Liebert equipment. These stand-alone devices include:
Contact Closure Alarm Panels
• Continuously monitor critical support equipment and instantly notify on alarm condition.
Autochangeover Control Panels
• Sequence the operation of multiple environmental units.

20

Comprehensive Monitoring Systems—Optional

Leak Detection Modules
• Provide quick detection and location of hazardous fluid leaks.
Discrete Output Interface Card
• Straightforward way to tie environmental units to a building management system or alarm panel.
Figure 10 Monitoring configurations
Enterprise Monitoring

Network Monitoring

21

Stand-Alone Monitoring
and Leak Detection

Comprehensive Monitoring Solutions—Optional

12.0 COMPREHENSIVE MONITORING SOLUTIONS—OPTIONAL
12.1

Liebert SiteScan® Web
Liebert SiteScan Web is a monitoring solution for critical environments that utilize a facility-view
approach. The system enables communications from Liebert environmental and power units—as well
as many other pieces of analog or digital equipment to a front end software package that provides
monitoring, control and alarm management.
Liebert SiteScan monitoring gives you decision making power to effectively manage the equipment
that is critical to your business. Designed with flexibility for large, complex systems as well as
smaller, single-site facilities, the Liebert SiteScan line of products can provide real-time status and
alarms.

12.2

Liebert SiteLink
The microprocessor-based module provides two-way communication between an existing building
management system and up to 12 Liebert units via Modbus or BACnet.

12.3

Liebert Nform
Liebert Nform centralizes the management of your distributed Liebert network equipment. Liebert
Nform software solution combines full-scale monitoring with the use of the existing network infrastructure—so the cost of dedicated, out-of-band communications cabling is eliminated. It is both scalable and adaptable so it can grow as your systems expand and needs change. Liebert Nform will
monitor any Liebert SNMP device that supports a network interface, such as the Liebert IntelliSlot
485 Card With Adapter and the Liebert IntelliSlot Web/485 Card With Adapter. Authenticated alarm
management and event notification ensures that alarms are detected and acted upon, which allows
problems to be quickly resolved.

12.4

Liebert IntelliSlot Web/485 Card With Adapter and Liebert IntelliSlot 485 Card With
Adapter
The Liebert IntelliSlot Web/485 Card With Adapter and the Liebert IntelliSlot 485 Card With
Adapter provide Ethernet connectivity for Liebert equipment. Operating status and alarms are communicated via the network to external systems utilizing industry standard open protocols.

12.5

Environmental Discrete Outputs Card
The Environmental Discrete Outputs Card (ENV-DO) provides 16 discrete outputs, corresponding to
status and major alarm conditions. These Form-C contact closures provide a straightforward means
to connect Liebert environmental units to Building Management Systems (BMS), I/O or alarm panels.

12.6

Remote Contact Monitor (RCM4)
LEDs display customized alarm indication for any dry contact input including alarms for Liebert
environmental, power and UPS systems. The RCM4 monitors and displays four dry contact points.

12.7

Auto-Changeover Control
Up to eight environmental units can be automatically and centrally controlled for
emergency switching and to balance unit runtime. The AC3 controls two or three
units. The RAC2-8 controls two through eight units and has the ability to provide
alarm notification to pagers.

Auto-Changeover RAC2-8

22

Comprehensive Monitoring Solutions—Optional

12.8

Universal Monitor
The Universal Monitor keeps personnel on-site and at remote locations
apprised of the status of equipment through local alarming and remote
paging services. The panel will interface with anything that closes an
electrical contact and any device with a 4-20mA signal. To improve process efficiency and troubleshooting, the panel tracks data in an alarm
log, an event log and a trend log. The Universal Monitor has a local
LCD interface and a remote dial-up interface.
Universal Monitor
Large and Small Enclosures

12.8.1 Leak Detection
Zone detectors with cable or single point detectors provide fast and
accurate indication of water in you critical space. These systems communicate with your unit or with a separate monitoring system. Area
water detection cable with distance measurement and monitoring
protects your entire room. This system quickly and accurately calculates and displays the location of water on the cable, allowing you to
promptly fin and correct a leak.

Zone Leak
Detection

12.8.2 Temperature and Humidity Recorder
A seven-day temperature and humidity recorder permits close examination of
computer room environment condition and can be used as a permanent record of
the environmental control system’s operation efficiency. The system includes
pens, 100 recording charts; two bottles of recording ink (1 red ink and 1 blue
ink).

23

Area Leak
Detection

System Data

13.0 SYSTEM DATA
Table 2

Liebert Challenger ITR air-cooled data—60 Hz

System Type
Indoor Unit

BR = Horizontal Flow

Self-Contained
BR 067A

Split Systems
w/Outdoor Prop-Fan
w/Indoor Centrifugal
Condensing Unit
Condensing Unit
BR 060E
BR 060E

Net Capacity Data
BTU/H
kW
BTU/H
kW
BTU/H
kW
100°F DB, 70°F WB (37.8°C DB, 21.1°C WB) 20% RH
Total
78,100
22.9
76,200
22.3
73,200
21.4
Sensible
78,100
22.9
76,200
22.3
73,200
21.4
Non Standard Flow Rates
2400 CFM
2300 CFM
2100 CFM
95°F DB, 68.3°F WB (35°C DB, 20.2°C WB) 24% RH
Total
77,500
22.7
75,800
22.2
73,000
21.4
Sensible
77,500
22.7
75,800
22.2
73,000
21.4
Non Standard Flow Rates
2700 CFM
2500 CFM
90°F DB, 66.5°F WB (32°C DB, 19.2°C WB) 28% RH
Total
73,600
21.6
72,400
21.2
70,600
20.7
Sensible
73,600
21.6
72,400
21.2
70,600
20.7
85°F DB, 64.4°F WB (29.4°C DB, 18°C WB) 32% RH
Total
69,700
20.4
68,400
20.0
66,800
19.6
Sensible
69,700
20.4
68,400
20.0
66,800
19.6
80°F DB, 62.7°F WB (26.7°C DB, 17.1°C WB) 38% RH
Total
66,000
19.3
64,400
18.9
63,100
18.5
Sensible
66,000
19.3
64,400
18.9
63,100
18.5
80°F DB, 66.5°F WB (26.7°C DB, 19.2°C WB) 50% RH
Total
66,900
19.6
65,300
19.1
63,800
18.7
Sensible
54,600
16.0
54,000
15.8
53,400
15.6
75°F DB, 62.5°F WB (23.9°C DB, 16.9°C WB) 50% RH
Total
62,700
18.4
60,800
17.8
59,600
17.5
Sensible
53,000
15.5
52,300
15.3
51,800
15.2
75°F DB, 61.1°F WB (23.9°C DB, 16.2°C WB) 45% RH
Total
61,200
17.9
60,700
17.8
59,600
17.5
Sensible
57,000
16.7
60,700
17.8
59,600
17.5
72°F DB, 60.1°F WB (22.2°C DB, 15.6°C WB) 50% RH
Total
60,200
17.6
58,200
17.1
57,200
16.8
Sensible
52,000
15.2
51,200
15.0
50,700
14.9
72°F DB, 58.7°F WB (22.2°C DB, 14.8°C WB) 45% RH
Total
58,900
17.3
58,400
17.1
57,500
16.8
Sensible
55,800
16.3
58,400
17.1
57,500
16.8
Fan Data (Blower A12x9AT)**
Standard Air, CFM (CMH)
2800 (4760)
2800 (4760)
2800 (4760)
Standard Fan Motor, hp (kW)
1-1/2 (1.1)
1-1/2 (1.1)
1-1/2 (1.1)
Opt Fan Motor, hp (kW)
2 (1.5)
2 (1.5)
2 (1.5)
Ext Static, in. WG (Pa)
.3 (75)
.3 (75)
.3 (75)
Evaporator Coil (V-FRAME, at standard conditions)
Face Area, ft.2 (m2)
6.67 (.62)
6.67 (.62)
6.67 (.62)
Rows
4
4
4
Face Velocity - FPM (m/s)
405 (2.1)
405 (2.1)
405 (2.1)
Electric Reheat 2 Stage (Stainless Steel, Fin Tubular) - Standard
Capacity, inc. motor heat, BTU/H (element kW)
56,200 (15)
56,200 (15)
56,200 (15)
Hot Water Reheat 180°F (82.2°C) EWT, 75°F (23.9°C) EAT - Optional (includes std air volume and opt fan motor hp)
Capacity, inc. motor heat, BTU/H (kW)
88,700 (26.0)
88,700 (26.0)
88,700 (26.0)
Flow Rate - GPM (l/s)
5.0 (.32)
5.0 (.32)
5.0 (.32)
Pressure drop - ft. (kPa)
16.9 (50.4)
16.9 (50.4)
16.9 (50.4)
* The net capacity data has fan motor heat factored in for all ratings and the entering air condition of 72°F (22.2°C) and 50% RH is the
standard rating for ASHRAE 127-2001. All capacities are nominal values; actual performance will be ±5%.
** Data rated with 2" 20% ASHRAE filter. Some options or combinations of options may result in reduced airflow. Consult factory for
recommendations.

24

System Data

Table 3

Liebert Challenger ITR air-cooled data—60 Hz (continued)
Split Systems

System Type
Indoor Unit

Self-Contained

w/Outdoor Prop-Fan
Condensing Unit

w/Indoor Centrifugal
Condensing Unit

BR 067A

BR 060E

BR 060E

11 (5)

11 (5)

11 (5)

4.8

4.8

4.8

11 (5)

11 (5)

11 (5)

3.9

3.9

3.9

Infrared Humidifier - Standard
Capacity - lb/hr (kg/hr)
kW
Steam Generating Humidifier - Optional
Capacity - lb/hr (kg/hr)
kW

Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type
20% efficiencies available in 2" (51mm) - Standard, or optional 4" (102mm) depths; other optional 4" (102mm) efficiencies
are: 30%, 40-45%, 60-65%
Nominal Size - inches

28.5 x 29.5

28.5 x 29.5

28.5 x 29.5

Nominal Size - mm

724 x 749

724 x 749

724 x 749

24.1 (2.2)

24.1 (2.2)

24.1 (2.2)

Effective Surface Area - ft

2

(m2)

Connection Sizes Liebert Challenger ITR Unit
Liquid Line

1/2 OD Cu

1/2 OD Cu

1/2 OD Cu

Hot Gas Line

7/8 OD Cu

N/A

N/A

Suction Line

N/A

1-1/8 CD Cu

1-1/8 CD Cu

Humidifier Supply Line

1/4 OD Cu

1/4 OD Cu

1/4 OD Cu

Condensate Drain Line

1/2 FPT

1/2 FPT

1/2 FPT

Model

CSF104

PFH067A_ _H

MC_65A

Motor, hp (kW)

3/4 (.56)

3/4 (.56)

2 (1.5)

Condenser Air 95°F (35°C) Ambient

Ext. Static, in. WG (Pa)
CFM (CMH)
Liquid Line Connection
Hot Gas Connection
Suction Line Connection

N/A

N/A

0.5 (125)

6200 (10533)

6700 (11383)

3500 (5947)

5/8 OD Cu

1/2 OD Cu

1/2 OD Cu

1-1/8 OD Cu

N/A

N/A

N/A

1-1/8 OD Cu

1-1/8 OD Cu

25

System Data

Table 4

Liebert Challenger ITR air-cooled data—50 Hz

System Type

Split Systems

BR = Horizontal Flow
Self-Contained

Indoor Unit

BR 065A

w/Outdoor Prop-Fan
Condensing Unit
BR 059E

w/Indoor Centrifugal
Condensing Unit
BR 059E

kW

BTU/H

kW

BTU/H

kW

BTU/H

Total

22.4

76,300

25.8

87,900

21.0

71,800

Sensible

22.4

76,300

25.8

87,900

21.0

71,800

Net Capacity Data
37.8°C DB, 21.1°C WB (100°F DB, 70°F WB) 20% RH

Non Standard Flow Rates

2300 CFM

2100 CFM

35°C DB, 20.2°C WB (95°F DB, 68.3°F WB) 24% RH
Total

22.0

75,100

24.3

83,100

21.3

72,600

Sensible

22.0

75,100

24.3

83,100

21.3

72,600

32.2°C DB, 19.2°C WB (90°F DB, 66.5°F WB) 28% RH
Total

20.9

71,200

23.0

78,400

20.2

68,800

Sensible

20.9

71,200

23.0

78,400

20.2

68,800

29.4°C DB, 18°C WB (85°F DB, 64.4°F WB) 32% RH
Total

19.7

67,200

21.6

73,800

19.1

65,100

Sensible

19.7

67,200

21.6

73,800

19.1

65,100

26.7°C DB, 17.1°C WB (80°F DB, 62.7°F WB) 38% RH
Total

18.6

63,600

20.3

69,300

18.0

61,400

Sensible

18.6

63,600

20.3

69,300

18.0

61,400

26.7°C DB, 19.2°C WB (80°F DB, 66.5°F WB) 50% RH
Total

19.0

64,900

21.3

72,600

18.3

62,400

Sensible

15.2

51,800

16.0

54,700

14.9

50,900

23.9°C DB, 16.9°C WB (75°F DB, 62.5°F WB) 50% RH
Total

17.8

60,600

19.5

66,600

17.0

58,100

Sensible

14.7

50,300

15.5

52,800

14.4

49,300

23.9°C DB, 16.2°C WB (75°F DB, 61.1°F WB) 45% RH
Total

17.3

59,100

19.0

64,700

16.6

56,700

Sensible

15.8

54,000

16.5

56,300

15.5

53,000

22.2°C DB, 15.6°C WB (72°F DB, 60.1°F WB) 50% RH
Total

17.0

58,100

18.6

63,600

16.3

55,700

Sensible

14.4

49,300

15.1

51,700

14.2

48,300

22.2°C DB, 14.8°C WB (72°F DB, 58.7°F WB) 45% RH
Total

16.7

56,900

18.0

61,500

16.3

55,700

Sensible

15.5

52,900

16.1

54,900

16.3

55,700

Fan Data (Blower A12x9AT)**
Standard Air, CMH (CFM)

4420 (2600)

4420 (2600)

4420 (2600)

1.1 (1-1/2)

1.1 (1-1/2)

1.1 (1-1/2)

Opt Fan Motor, kW (hp)

1.5 (2)

1.5 (2)

1.5 (2)

Ext Static, Pa (in. WG)

75 (.3)

75 (.3)

75 (.3)

.62 (6.67)

.62 (6.67)

.62 (6.67)

4

4

4

1.9 (375)

1.9 (375)

1.9 (375)

15 (56,200)

15 (56,200)

Standard Fan Motor, kW (hp)

Evaporator Coil (V-Frame, at Standard Conditions)
Face Area, m2 (ft.2)
Rows
Face Velocity, m/s (FPM)

Electric Reheat 2 Stage (Stainless Steel, Fin Tubular) - Standard
Capacity, element kW (inc. motor heat, BTU/H)

15 (56,200)

Hot Water Reheat 82.2°C (180°F) EWT, 23.9°C (75°F) EAT - Opt. (inc. standard air volume and optional fan motor hp)
Capacity, inc. motor heat, kW (BTU/H)
Flow Rate, l/s (GPM)
Pressure drop, kPa (ft.)

25.3 (86,200)

25.3 (86,200)

.32 (5.0)

.32 (5.0)

.32 (5.0)

50.4 (16.9)

50.4 (16.9)

50.4 (16.9)

*

25.3 (86,200)

The net capacity data has fan motor heat factored in for all ratings and the entering air condition of 72°F (22.2°C) and 50% RH is the
standard rating for ASHRAE 127-2001.All capacities are nominal values; actual performance will be ±5%.
** Data rated with 2" 20% ASHRAE filter. Some options or combinations of options may result in reduced airflow. Consult factory for
recommendations.

26

System Data

Table 5

Liebert Challenger ITR air-cooled data—50Hz (continued)

System Type

Split Systems

Indoor Unit

Self-Contained

w/Outdoor Prop-Fan
Condensing Unit

w/Indoor Centrifugal
Condensing Unit

BR 065A

BR 059E

BR 059E

5 (11)

5 (11)

5 (11)

4.8

4.8

4.8

5 (11)

5 (11)

5 (11)

3.9

3.9

3.9

Infrared Humidifier - Standard
Capacity - kg/hr (lb/hr)
kW
Steam Generating Humidifier - Optional
Capacity - kg/hr (lb/hr)
kW

Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type
20% efficiencies available in 51mm (2") - Standard, or optional 102mm (4") depths; other optional 102mm (4") efficiencies
are: 30%, 40-45%, 60-65%
Nominal Size - mm

724 x 749

724 x 749

724 x 749

Nominal Size - inches

28.5 x 29.5

28.5 x 29.5

28.5 x 29.5

2.2 (24.1)

2.2 (24.1)

2.2 (24.1)

Liquid Line

1/2 OD Cu

1/2 OD Cu

1/2 OD Cu

Hot Gas Line

7/8 OD Cu

N/A

N/A

Suction Line

N/A

1 1/8 CD Cu

1 1/8 CD Cu

Humidifier Supply Line

1/4 OD Cu

1/4 OD Cu

1/4 OD Cu

Condensate Drain Line

1/2 FPT

1/2 FPT

1/2 FPT

Model

CSF104

PFH066A_ _H

MC_64A

Motor kW (hp)

.56 (3/4)

.56 (3/4)

1.5 (2)

N/A

N/A

125 (0.5)

8750 (5150)

9854 (5800)

5947 (3500)

5/8 OD Cu

1/2 OD Cu*

1/2 OD Cu*

2

Effective Surface Area - m

(ft2)

Connection Sizes Challenger ITR Unit

Condenser Air 35°C (95°F) Ambient

Ext. Static Pa (in. WG)
CMH (CFM)
Liquid Line Connection
Hot Gas Connection
Suction Line Connection

1-1/8 OD Cu

N/A

N/A

N/A

1-1/8 OD Cu*

1-1/8 OD Cu*

*

The net capacity data has fan motor heat factored in for all ratings and the entering air condition of 72°F (22.2°C) and 50% RH is the
standard rating for ASHRAE 127-2001.All capacities are nominal values; actual performance will be ±5%.
** Data rated with 2" 20% ASHRAE filter. Some options or combinations of options may result in reduced airflow. Consult factory for
recommendations.

27

System Data

Table 6

Liebert Challenger ITR water cooled data, 60 Hz

System Type

Self-Contained

BR = Horizontal Flow

Indoor Unit

Split Systems

BR 071WG

Net Capacity Data

BTU/H

BR 060E
kW

BTU/H

kW

100°F DB, 70°F WB (37.8°C DB, 21.1°C WB) 20% RH
Total

82,900

24.3

79,000

23.1

Sensible

82,900

24.3

79,000

23.1

Non-Standard Flow Rates

2600 CFM

2400 CFM

95°F DB, 68.3°F WB (35°C DB, 20.2°C WB) 24% RH
Total

80,400

23.6

78,400

23.0

Sensible

80,400

23.6

78,400

23.0

Total

76,200

22.3

74,400

21.8

Sensible

76,200

22.3

74,400

21.8

90°F DB, 66.5°F WB (32°C DB, 19.2°C WB) 28% RH

85°F DB, 64.4°F WB (29.4°C DB, 18°C WB) 32% RH
Total

72,300

21.2

70,300

20.6

Sensible

72,300

21.2

70,300

20.6

80°F DB, 62.7°F WB (26.7°C DB, 17.1°C WB) 38% RH
Total

68,400

20.0

66,500

19.5

Sensible

68,400

20.0

66,500

19.5

80°F DB, 66.5°F WB (26.7°C DB, 19.2°C WB) 50% RH
Total

69,900

20.5

67,600

19.8

Sensible

55,700

16.3

54,900

16.1

75°F DB, 62.5°F WB (23.9°C DB, 16.9°C WB) 50% RH
Total

65,200

19.1

63,100

18.5

Sensible

54,000

15.8

53,200

15.6

75°F DB, 61.1°F WB (23.9°C DB, 16.2°C WB) 45% RH
Total

63,600

18.6

61,500

18.0

Sensible

58,000

17.0

57,100

16.7

72°F DB, 60.1°F WB (22.2°C DB, 15.6°C WB) 50% RH
Total

62,500

18.3

60,500

17.7

Sensible

53,000

15.5

52,100

15.3

72°F DB, 58.7°F WB (22.2°C DB, 14.8°C WB) 45% RH
Total

61,100

17.9

59,200

17.3

Sensible

56,700

16.6

55,900

16.4

Fan Data (Blower A12x9AT)**
Standard Air, CFM (CMH)

2800 (4760)

2800 (4760)

1-1/2 (1.1)

1-1/2 (1.1)

Opt Fan Motor, hp (kW)

2 (1.5)

2 (1.5)

Ext Static, in. WG (Pa)

.3 (75)

.3 (75)

6.67 (.62)

6.67 (.62)

Standard Fan Motor, hp (kW)

Evaporator Coil (V-Frame, at standard conditions)
Face Area, ft.2 (m2)
Rows
Face Velocity, FPM (m/s)

4

4

405 (2.1)

405 (2.1)

56,200 (15)

56,200 (15)

Electric Reheat 2 Stage (Stainless Steel, Fin Tubular) - Standard
Capacity, inc. motor heat, BTU/H (element kW)

Hot Water Reheat 180°F (82.2°C) EWT, 75°F (23.9°C) EAT - Optional (includes std air volume and opt fan motor hp)
Capacity, inc. motor heat, BTU/H (kW)

88,700 (26.0)

Flow Rate, GPM (l/s)
Pressure drop, ft. (kPa)

88,700 (26.0)

5.0 (.32)

5.0 (.32)

16.9 (50.4)

16.9 (50.4)

Hot Gas Reheat - Optional (Includes standard air volume and optional fan motor)
Capacity, inc. motor heat, BTU/H (kW)

54,900 (16.1)

*

54,900 (16.1)

The net capacity data has fan motor heat factored in for all ratings and the entering air condition of 72°F (22.2°C) and 50% RH is the standard rating for
ASHRAE 127-2001.All capacities are nominal values; actual performance will be ±5%.
** Data rated with 2" 20% ASHRAE filter. Some options or combinations of options may result in reduced airflow. Consult factory for recommendations.

28

System Data

Table 7

Liebert Challenger ITR water cooled data, 60 Hz (continued)

System Type
Indoor Unit

Self-Contained

Split Systems

BR 071WG

BR 060E

11 (5)

11 (5)

4.8

4.8

11 (5)

11 (5)

3.9

3.9

Infrared Humidifier - Standard
Capacity, lb/hr (kg/hr)
kW
Steam Generating Humidifier - Optional
Capacity, lb/hr (kg/hr)
kW
Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type
20% efficiencies available in 2" (51mm) - Standard, or optional 4" (102mm) depths; other optional 4" (102mm) efficiencies
are: 30%, 40-45%, 60-65%
Nominal Size, in. (mm)
Effective Surface Area, ft2 (m2)

28.5 x 29.5
(724 x 749)

28.5 x 29.5
(724 x 749)

24.1 (2.2)

24.1 (2.2)

1

1

Water Regulating Valve
Size, in.
Water Requirements (Coaxial Condenser)

MC_69W

THR - BTU/H (kW) @ 75°F (22.2°C), 50% RH

82,000 (24.0)

81100 (23.8)

Flow Rate, GPM (l/s)

5.4 (.34)

5.4 (.34)

Pressure Drop, PSI (kPa)

0.9 (6.2)

1.2 (8.1)

65°F (18.3°C) EWT - 105°F (40.6°C) Cond Temp

75°F (23.9°C) EWT - 105°F (40.6°C) Cond Temp
Flow Rate, GPM (l/s)

7.7 (.49)

7.6 (.48)

Pressure Drop, PSI (kPa)

1.6 (11.0)

2.2 (15.2)

Flow Rate, GPM (l/s)

9.9 (.62)

9.7 (.61)

Pressure Drop, PSI (kPa)

2.5 (17.2)

3.5 (24.2)

85°F (29.4°C) EWT - 115°F (46.1°C) Cond Temp

Connection Sizes Challenger ITR Unit
Condenser Supply

1-1/8 OD Cu

Condenser Return

1-1/8 OD Cu

Liquid Line

1/2 OD Cu

Suction Line

1 1/8 CD Cu

Humidifier Supply Line

1/4 OD Cu

1/4 OD Cu

Condensate Drain Line

1/2 FPT

1/2 FPT

Connection Sizes Remote Condensing Unit
Condenser Supply

1-1/8 OD Cu

Condenser Return

1-1/8 OD Cu

Liquid Line
Suction Line

1/2 OD Cu
1-1/8 OD Cu

Self-contained unit pressure drops based on two-way valve with bypass. Split system unit pressure drops based on two-way or three-way
valve.

29

System Data

Table 8

Liebert Challenger ITR water cooled data, 50 Hz

System Type

Self-Contained

BR = Horizontal Flow

Indoor Unit

Split Systems

BR 070WG

Net Capacity Data

kW

BTU/H

BR 059E
kW

BTU/H
78,800

37.8ºC DB, 21.1ºC WB (100ºF DB, 70ºF WB) 20% RH
Total

24.0

81,800

23.1

Sensible

24.0

81,800

23.1

2500 CFM

Non Standard Flow Rates
35ºC DB, 20.2ºC WB (95ºF DB, 68.3ºF WB) 24% RH

78,800
2400 CFM

Total

23.0

78,500

22.4

76,500

Sensible

23.0

78,500

22.4

76,500

32.2ºC DB, 19.2ºC WB (90ºF DB, 66.5ºF WB) 28% RH
Total

21.8

74,300

21.2

72,400

Sensible

21.8

74,300

21.2

72,400

29.4ºC DB, 18ºC WB (85ºF DB, 64.4ºF WB) 32% RH
Total

20.6

70,200

20.0

68,300

Sensible

20.6

70,200

20.0

68,300

26.7ºC DB, 17.1ºC WB (80ºF DB, 62.7ºF WB) 38% RH
Total

19.4

66,200

18.9

64,500

Sensible

19.4

66,200

18.9

64,500

26.7ºC DB, 19.2ºC WB (80ºF DB, 66.5ºF WB) 50% RH
Total

20.0

68,400

19.4

66,100

Sensible

15.6

53,100

15.3

52,300

23.9ºC DB, 16.9ºC WB (75ºF DB, 62.5ºF WB) 50% RH
Total

18.6

63,500

18.0

61,400

Sensible

15.1

51,500

14.8

50,600

23.9ºC DB, 16.2ºC WB (75ºF DB, 61.1ºF WB) 45% RH
Total

18.1

61,800

17.5

59,800

Sensible

16.1

55,100

15.9

54,300

22.2ºC DB, 15.6ºC WB (72ºF DB, 60.1ºF WB) 50% RH
Total

17.8

60,700

17.2

58,700

Sensible

14.8

50,400

14.5

49,600

22.2ºC DB, 14.8ºC WB (72ºF DB, 58.7ºF WB) 45% RH
Total

17.3

59,200

16.8

57,400

Sensible

15.8

53,900

15.6

53,100

Fan Data (Blower A12x9AT)**
Standard Air, CMH (CFM)
Standard Fan Motor, kW (hp)

4420 (2600)

4420 (2600)

1.1 (1-1/2)

1.1 (1-1/2)

Opt Fan Motor, kW (hp)

1.5 (2)

1.5 (2)

Ext Static Pa, (in. WG)

75 (.3)

75 (.3)

.62 (6.67)

.62 (6.67)

Evaporator Coil (V-Frame, at standard conditions)
Face Area, m2 (ft.2)
Rows
Face Velocity, m/s (FPM)

4

4

1.9 (375)

1.9 (375)

15 (56,200)

15 (56,200)

Electric Reheat 2 Stage (Stainless Steel, Fin Tubular) - Standard
Capacity, element kW (inc. motor heat, BTU/H)

Hot Water Reheat 82.2°C (180°F) EWT, 23.9°C (75°F) EAT - Optional (includes std air volume and opt fan motor hp)
Capacity, inc. motor heat, kW (BTU/H)

25.3 (86,200)

Flow Rate, l/s (GPM)
Pressure drop, kPa (ft.)

25.3 (86,200)

.32 (5.0)

.32 (5.0)

50.4 (16.9)

50.4 (16.9)

Hot Gas Reheat - Optional (includes standard air volume and optional fan motor)
Capacity, inc. motor heat, kW (BTU/H)

15.0 (51,300)

*

15.0 (51,300)

The net capacity data has fan motor heat factored in for all ratings and the entering air condition of 72°F (22.2°C) and 50% RH is the
standard rating for ASHRAE 127-2001.All capacities are nominal values; actual performance will be ±5%.
** Data rated with 2" 20% ASHRAE filter. Some options or combinations of options may result in reduced airflow. Consult factory for
recommendations.

30

System Data

Table 9

Liebert Challenger ITR water cooled data, 50 Hz (continued)

System Type
Indoor Unit

Self-Contained

Split Systems

BR 070WG

BR 059E

5 (11)

5 (11)

4.8

4.8

5 (11)

5 (11)

3.9

3.9

Infrared Humidifier - Standard
Capacity - kg/hr (lb/hr)
kW
Steam Generating Humidifier - Optional
Capacity, kg/hr (lb/hr)
kW
Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type
20% efficiencies available in 51mm (2") - Standard, or optional 102mm (4") depths; other optional 102mm (4") efficiencies
are: 30%, 40-45%, 60-65%
Nominal Size, mm (in.)
Effective Surface Area, m2 (ft2)

724 x 749
(28.5 x 29.5)

724 x 749
(28.5 x 29.5)

2.2 (24.1)

2.2 (24.1)

1

1

Water Regulating Valve
Size, in
Water Requirements (Coaxial Condenser)

MC_68W

THR - kW (BTU/H) @ 22.2°C (75°F), 50% RH

23.8 (81,200)

23.2 (79,200)

Flow Rate, l/s (GPM)

.34 (5.4)

.33 (5.2)

Pressure Drop, kPa (PSI)

5.7 (0.8)

7.8 (1.1)

18.3°C (65°F) EWT - 40.6°C (105°F) Cond Temp

23.9°C(75°F) EWT - 40.6°C (105°F) Cond Temp
Flow Rate, l/s (GPM)

.48 (7.6)

.47 (7.4)

Pressure Drop, kPa (PSI)

10.7 (1.6)

14.3 (2.1)

Flow Rate, l/s (GPM)

.61 (9.7)

.59 (9.4)

Pressure Drop, kPa (PSI)

16.7 (2.4)

22.7 (3.3)

Condenser Supply

1-1/8 OD Cu

—

Condenser Return

1-1/8 OD Cu

—

29.4°C (85°F) EWT - 46.1°C (115°F) Cond Temp

Connection Sizes Challenger ITR Unit

Liquid Line

—

1/2 OD Cu

Suction Line

—

1-1/8 CD Cu

Humidifier Supply Line

1/4 OD Cu

1/4 OD Cu

Condensate Drain Line

1/2 FPT

1/2 FPT

Condenser Supply

—

1-1/8 OD Cu

Condenser Return

—

1-1/8 OD Cu

Liquid Line

—

1/2 OD Cu

Suction Line

—

1-1/8 CD Cu

Connection Sizes Remote Condensing Unit

Self-contained unit pressure drops based on two-way valve with bypass. Split system unit pressure drops based on two-way or three-way
valve.

31

System Data

Table 10

Liebert Challenger ITR glycol cooled data, 60 Hz

System Type

Glycol Cooled
GLYCOOL
BR = Horizontal Flow
Self-Contained
Split
Systems
Self
Contained
BM = Horizontal Flow with Econ-O-Coil
Indoor Unit
BR 071WG
BR 060E
BM 061G
Net Capacity Data
BTU/H
kW
BTU/H
kW
BTU/H
kW
100°F DB, 70°F WB (37.8°C DB, 21.1°C WB) 20% RH
Total
69,800
20.5
71,600
21.0
66,000
19.3
Sensible
69,800
20.5
71,600
21.0
66,000
19.3
1800 CFM, 21.5 GPM,
2600 CFM, 20.5 GPM,
Non Standard Flow Rates
2100 CFM
27.4 FT PD
24.6 FT PD
95°F DB, 68.3°F WB (35°C DB, 20.2°C WB) 24% RH
Total
68,600
20.1
72,300
21.2
64,700
19.0
Sensible
68,600
20.1
72,300
21.2
64,700
19.0
2100 CFM, 21.5 GPM,
2300 CFM, 19.5 GPM,
Non Standard Flow Rates
2600 CFM
27.4 FT PD
22.5 FT PD
90°F DB, 66.5°F WB (32°C DB, 19.2°C WB) 28% RH
Total
64,700
19.0
69,900
20.5
65,300
19.1
Sensible
64,700
19.0
69,900
20.5
65,300
19.1
Non Standard Flow Rates
2100CFM,18.5 GPM, 20.9FT PD
19.5 GPM, 22.5 FT PD
85°F DB, 64.4°F WB (29.4°C DB, 18°C WB) 32% RH
Total
62,800
18.4
66,200
19.4
61,500
18.0
Sensible
62,800
18.4
66,200
19.4
61,500
18.0
Non Standard Flow Rates
2300 CFM
80°F DB, 62.7°F WB (26.7°C DB, 17.1°C WB) 38% RH
Total
62,400
18.3
62,500
18.3
58,200
17.1
Sensible
62,400
18.3
62,500
18.3
58,200
17.1
80°F DB, 66.5°F WB (26.7°C DB, 19.2°C WB) 50% RH
Total
62,900
18.4
63,000
18.5
59,900
17.6
Sensible
53,200
15.6
53,200
15.6
51,200
15.0
75°F DB, 62.5°F WB (23.9°C DB, 16.9°C WB) 50% RH
Total
58,900
17.3
58,800
17.2
55,900
16.4
Sensible
51,500
15.1
51,500
15.1
49,500
14.5
75°F DB, 61.1°F WB (23.9°C DB, 16.2°C WB) 45% RH
Total
59,000
17.3
59,000
17.3
55,000
16.1
Sensible
59,000
17.3
59,000
17.3
55,000
16.1
72°F DB, 60.1°F WB (22.2°C DB, 15.6°C WB) 50% RH
Total
56,500
16.6
56,500
16.6
53,600
15.7
Sensible
50,500
14.8
50,500
14.8
48,500
14.2
72°F DB, 58.7°F WB (22.2°C DB, 14.8°C WB) 45% RH
Total
56,900
16.7
56,900
16.7
53,000
15.5
Sensible
56,900
16.7
56,900
16.7
53,000
15.5
GLYCOOL Coil Sensible Capacity
75°F DB, 62.5°F WB (23.9°C DB, 16.9°C WB) 45°F (7.2°C) EGT
47,700
14.0
Fan Data (Blower A12x9AT)**
Standard Air, CFM (CMH)
2800 (4760)
2800 (4760)
2800 (4760)
Standard Fan Motor, hp (kW)
1-1/2 (1.1)
1-1/2 (1.1)
2 (1.5)
Opt Fan Motor, hp (kW)
2 (1.5)
2 (1.5)
N/A
Ext Static, in. WG (Pa)
.3 (75)
.3 (75)
.3 (75)
Evaporator Coil (V-Frame, at standard conditions)
Face Area, ft.2 (m2)
6.67 (.62)
6.67 (.62)
6.67 (.62)
Rows
4
4
4
Face Velocity, FPM (m/s)
405 (2.1)
405 (2.1)
405 (2.1)
Electric Reheat 2 Stage (Stainless Steel, Fin Tubular) - Standard
Capacity, inc. motor heat, BTU/H(element kW)
56,200 (15)
56,200 (15)
57,700 (15)
Hot Water Reheat 180°F (82.2°C) EWT, 75°F (23.9°C) EAT - Optional (includes standard air volume and optional fan motor hp)
Capacity, inc. motor heat, BTU/H(kW)
88,700 (26.0)
88,700 (26.0)
N/A
Flow Rate, GPM (l/s)
5.0 (.32)
5.0 (.32)
5.0 (.32)
Pressure drop, ft. (kPa)
16.9 (50.4)
16.9 (50.4)
16.9 (50.4)
Hot Gas Reheat - Optional (includes standard air volume and optional fan motor)
Capacity, inc. motor heat, BTU/H (kW)
54,900 (16.1)
54,900 (16.1)
N/A
* The net capacity data has fan motor heat factored in for all ratings and the entering air condition of 72°F (22.2°C) and 50% RH is the standard rating for
ASHRAE 127-2001.All capacities are nominal values; actual performance will be ±5%. All above data is based on 40% ethylene glycol solution.
** Data rated with 2" 20% ASHRAE filter. Some options or combinations of options may result in reduced airflow. Consult factory for recommendations.

32

System Data

Table 11

Liebert Challenger ITR glycol cooled data, 60 Hz (continued)
Glycol Cooled

System Type

GLYCOOL

Self-Contained

Split Systems

Self-Contained

BR 071WG

BR 060E

BM 061G

11 (5)

11 (5)

11 (5)

4.8

4.8

4.8

11 (5)

11 (5)

11 (5)

3.9

3.9

3.9

Indoor Unit
Infrared Humidifier - Standard
Capacity, lb/hr (kg/hr)
kW

Steam Generating Humidifier - Optional
Capacity, lb/hr (kg/hr)
kW

Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type
20% efficiencies available in 2" (51mm) - Standard, or optional 4" (102mm) Depths; other optional 4" (102mm) efficiencies
are: 30%, 40-45%, 60-65%
28.5 x 29.5
(724 x 749)

28.5 x 29.5
(724 x 749)

28.5 x 29.5
(724 x 749)

24.1 (2.2)

24.1 (2.2)

24.1 (2.2)

Size, in

1

1

1

Size, in

—

—

1

Cv

—

—

13.9

Nominal Size, inches (mm)
Effective Surface Area, ft2 (m2)
Glycol Regulating Valve
Econ-O-Valve

System Data*

MC_*69WG
Flow Rate, GPM (l/s)

17.5 (1.1)

Unit Volume, gal (l)
Pressure Drop, ft. (kPa)

20 (1.3)

17.5 (1.1)

2.0 (7.5)

2.0 (7.5)

4.0 (15.0)

18.9 (56.4)

37.5 (111.9)

51.1 (152.5)

Connection Sizes Challenger ITR Unit
Condenser Supply

1-1/8 OD Cu

1-1/8 OD Cu

Condenser Return

1-1/8 OD Cu

1-1/8 OD Cu

Liquid Line

1/2 OD Cu

Suction Line

1-1/8 OD Cu

Humidifier Supply Line

1/4 OD Cu

1/4 OD Cu

1/4 OD Cu

Condensate Drain Line

1/2 FPT

1/2 FPT

1/2 FPT

Connection Sizes Condensing Unit
Condenser Supply

1-1/8 OD Cu

Condenser Return

1-1/8 OD Cu

Liquid Line

1/2 OD Cu

Suction Line

1-1/8 OD Cu

Drycooler 95°F (35°C) Ambient*
Model Number

DSF112-3PH

Drycooler Connections

DSO174-3PH

DSO112-3PH

2

2

2

Volume, gal. (l)

5.8 (22.0)

6.9 (26.2)

5.8 (22.0)

Pressure Drop, ft. (kPa)

2.4 (7.2)

3.1 (9.2)

2.4 (7.2)

Fan, hp (kW)

3/4 (.56)

3/4 (.56)

3/4 (.56)

3/4 (.56)

3/4 (.56)

1.5 (1.1)

Head, ft. (kPa)

69 (205.9)

69 (205.9)

88 (262.6)

Pump Suction and Discharge NPT, female

1-1/4 & 3/4

1-1/4 & 3/4

1-1/4 & 3/4

Glycol Pump, 3-phase hp (kW)

* All data above is based on 40% ethylene glycol solution.

33

System Data

Table 12

Liebert Challenger ITR glycol cooled data, 50 Hz

System Type

BR = Horizontal Flow
BM = Horizontal Flow with Econ-O-Coil
Indoor Unit
Net Capacity Data

Glycol Cooled
Self-Contained

GLYCOOL
Split Systems

BR 070WG
kW

Self Contained

BR 059E

BTU/H

kW

BM 058G
BTU/H

kW

BTU/H

37.8ºC DB, 21.1ºC WB (100ºF DB, 70ºF WB) 20% RH
Total
20.3
69,300
20.8
70,900
18.8
64,100
Sensible
20.3
69,300
20.8
70,900
18.8
64,100
Non Standard Flow Rates
1900 CFM, 24.5 GPM
2100 CFM
2000 CFM, 22.5 GPM
35ºC DB, 20.2ºC WB (95ºF DB, 68.3ºF WB) 24% RH
Total
19.6
66,800
20.7
70,800
17.8
60,600
Sensible
19.6
66,800
20.7
70,800
17.8
60,600
Non Standard Flow Rates
2000 CFM, 23.5 GPM
2500 CFM
2000 CFM, 20.5 GPM
32.2ºC DB, 19.2ºC WB (90ºF DB, 66.5ºF WB) 28% RH
Total
18.5
63,000
19.9
67,800
16.8
57,300
Sensible
18.5
63,000
19.9
67,800
16.8
57,300
Non Standard Flow Rates
2000 CFM, 21.5 GPM
2000 CFM
29.4ºC DB, 18ºC WB (85ºF DB, 64.4ºF WB) 32% RH
Total
17.9
61,200
18.8
64,200
16.9
57,700
Sensible
17.9
61,200
18.8
64,200
16.9
57,700
Non Standard Flow Rates
2200 CFM, 19.5 GPM
2400 CFM
26.7ºC DB, 17.1ºC WB (80ºF DB, 62.7ºF WB) 38% RH
Total
17.1
58,400
17.7
60,500
16.4
55,900
Sensible
17.1
58,400
17.7
60,500
16.4
55,900
Non Standard Flow Rates
2300 CFM
26.7ºC DB, 19.2ºC WB (80ºF DB, 66.5ºF WB) 50% RH
Total
17.2
58,800
18.0
61,400
16.8
57,400
Sensible
12.7
43,200
14.8
50,500
13.5
46,000
Non Standard Flow Rates
2000 CFM
2400 CFM
23.9ºC DB, 16.9ºC WB (75ºF DB, 62.5ºF WB) 50% RH
Total
16.7
57,000
16.8
57,200
15.9
54,100
Sensible
14.3
48,800
14.3
48,900
13.7
46,800
23.9ºC DB, 16.2ºC WB (75ºF DB, 61.1ºF WB) 45% RH
Total
16.7
56,900
16.3
55,800
15.4
52,700
Sensible
16.7
56,900
15.4
52,600
15.4
52,700
22.2ºC DB, 15.6ºC WB (72ºF DB, 60.1ºF WB) 50% RH
Total
16.0
54,600
16.1
54,800
15.2
51,800
Sensible
14.0
47,900
14.0
47,900
13.4
45,800
22.2ºC DB, 14.8ºC WB (72ºF DB, 58.7ºF WB) 45% RH
Total
16.1
54,800
16.1
55,000
14.9
50,700
Sensible
16.1
54,800
16.1
55,000
14.9
50,700
GLYCOOL Coil Sensible Capacity
23.9°C DB, 16.9°C WB (75°F DB, 62.5°C WB) 10°C (45°F) EGT
14
47,700.0
Fan Data (Blower A12x9AT)**
Standard Air, CMH (CFM)
4420 (2600)
4420 (2600)
4420 (2600)
Standard Fan Motor, kW (hp)
1.1 (1-1/2)
1.1 (1-1/2)
1.5 (2)
Optional Fan Motor, kW (hp)
1.5 (2)
1.5 (2)
N/A
Ext Static, Pa (in. WG)
75 (.3)
75 (.3)
75 (.3)
Evaporator Coil (V-Frame, at standard conditions)
Face Area, m2 (ft.2)
.62 (6.67)
.62 (6.67)
.62 (6.67)
Rows
4
4
4
Face Velocity, m/s (FPM)
1.9 (375)
1.9 (375)
1.9 (375)
Electric Reheat 2 Stage (Stainless Steel, Fin Tubular) - Standard
Capacity, element kW (inc. motor heat, BTU/H)
15 (56,200)
15 (56,200)
15 (56,200)
Hot Water Reheat 82.2°C (180°F) EWT, 23.9°C (75°F) EAT - Optional (Includes standard air volume and optional fan motor hp)
Capacity, inc. motor heat, kW (BTU/H)
25.3 (86,200)
25.3 (86,200)
25.3 (86,200)
Flow Rate, l/s (GPM)
.32 (5.0)
.32 (5.0)
.32 (5.0)
Pressure drop, kPa (ft.)
50.4 (16.9)
50.4 (16.9)
50.4 (16.9)
Hot Gas Reheat - Optional (Includes standard air volume and optional fan motor)
Capacity, kW (BTU/H) (includes motor heat)
15.0 (51,300)
15.0 (51,300)
15.0 (51,300)
* The net capacity data has fan motor heat factored in for all ratings and the entering air condition of 72°F (22.2°C) and 50% RH is the standard rating
for ASHRAE 127-2001. All capacities are nominal values; actual performance will be ±5%. All data above is based on 40% ethylene glycol solution.
** Data rated with 2" 20% ASHRAE filter. Some options or combinations of options may result in reduced airflow. Consult factory for
recommendations.

34

System Data

Table 13

Liebert Challenger ITR glycol cooled data, 50 Hz (continued)
Glycol Cooled

System Type
Indoor Unit

GLYCOOL

Self-Contained

Split Systems

Self-Contained

BR 070WG

BR 059E

BM 058G

5 (11)

5 (11)

5 (11)

4.8

4.8

4.8

5 (11)

5 (11)

5 (11)

3.9

3.9

3.9

Infrared Humidifier - Standard
Capacity, kg/hr (lb/hr)
kW
Steam Generating Humidifier - Optional
Capacity, kg/hr (lb/hr)
kW

Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type
20% efficiencies available in 51mm (2") - Standard, or optional 102mm (4") depths; other optional 102mm (4") efficiencies
are: 30%, 40-45%, 60-65%
724 x 749
(28.5 x 29.5)

724 x 749
(28.5 x 29.5)

724 x 749
(28.5 x 29.5)

2.2 (24.1)

2.2 (24.1)

2.2 (24.1)

Size, in

1

1

1

Size, in

-

-

1

Cv

-

-

13.9

Nominal Size, mm (in)
Effective Surface Area, m2 (ft2)
Glycol Regulating Valve
Econ-O-Valve

System Data*

MC_68WG
Flow Rate, l/s (GPM)

1.1 (17.5)

1.3 (20)

1.1 (17.5)

Unit Volume, liters (gallons)

7.5 (2.0)

7.5 (2.0)

15.0 (4.0)

56.4 (18.9)

111.9 (37.5)

152.5 (51.1)

Pressure Drop, kPa (ft.)
Connection Sizes Challenger ITR Unit
Condenser Supply

1-1/8 OD Cu

1-1/8 OD Cu

Condenser Return

1-1/8 OD Cu

1-1/8 OD Cu

Liquid Line

1/2 OD Cu

Suction Line

1-1/8 CD Cu

Humidifier Supply Line

1/4 OD Cu

1/4 OD Cu

1/4 OD Cu

Condensate Drain Line

1/2 FPT

1/2 FPT

1/2 FPT

Connection Sizes Condensing Unit
Condenser Supply

1-1/8 OD Cu

Condenser Return

1-1/8 OD Cu

Liquid Line

1/2 OD Cu

Suction Line

1-1/8 CD Cu

Drycooler 35°C (95°F) Ambient*
Model Number

DSF112-3PH

DSF174-3PH

DSF112-3PH

Drycooler Connections

2

2

2

Volume, liters (gallons)

5.8 (22.0)

6.9 (26.2)

5.8 (22.0)

Pressure Drop, kPa (ft.)

7.2 (2.4)

9.2 (3.1)

7.2 (2.4)

Fan, kW (hp)

.56 (3/4)

.56 (3/4)

.56 (3/4)

Glycol Pump - 3-Phase kW (hp)

1.1 (1.5)

1.1 (1.5)

1.1 (1.5)

Head, kPa (ft.)

262.6 (88.0)

262.6 (88.0)

262.6 (88.0)

Pump Suction and Discharge NPT, female

1-1/4 & 3/4

1-1/4 & 3/4

1-1/4 & 3/4

* All data above is based on 40% ethylene glycol solution.

35

System Data

Table 14

Liebert Challenger ITR chilled water data, 60 Hz

Capacity Data BTU/H (kW) @ 45°F (7.2°C) EWT, 10°F (5.6°C) Water Rise; Net Capacity Data
Indoor Unit
BR = Horizontal Flow
BR 102C
100ºF DB, 70ºF WB (37.8ºC DB, 21.1ºC WB) 20% RH, 12°F
(6.7°C) Water Rise
Total
BTU/H (kW)
125,000
36.6
Sensible
BTU/H (kW)
118,000
34.6
Flow Rate
GPM (l/s)
21.4
1.4
Pressure Drop
ft (kPa)
25.5
76.0
95ºF DB, 68.3ºF WB (35ºC DB, 20.2ºC WB) 24% RH, 12°F
(6.7°C) Water Rise
Total
BTU/H (kW)
113,000
33.1
Sensible
BTU/H (kW)
107,000
31.4
Flow Rate
GPM (l/s)
19.6
1.2
Pressure Drop
ft (kPa)
21.7
64.7
90ºF DB, 66.5ºF WB (32.2ºC DB, 19.2ºC WB) 28% RH, 12°F (6.7°C)
Water Rise
Total
BTU/H (kW)
101,000
29.6
Sensible
BTU/H (kW)
94,700
27.7
Flow Rate
GPM (l/s)
17.4
1.1
Pressure Drop
ft (kPa)
17.4
51.9
85ºF DB, 64.4ºF WB (29.4ºC DB, 18ºC WB) 32% RH
Total
BTU/H (kW)
91,000
26.7
Sensible
BTU/H (kW)
85,000
24.9
Flow Rate
GPM (l/s)
18.9
1.2
Pressure Drop
ft (kPa)
20.2
60.2
80ºF DB, 62.7ºF WB (26.7ºC DB, 17.1ºC WB) 38% RH
Total
BTU/H (kW)
79,000
23.1
Sensible
Flow Rate

BTU/H (kW)
GPM (l/s)

72,400

21.2

16.5

1.0

Pressure Drop
ft (kPa)
15.8
80ºF DB, 66.5ºF WB (26.7ºC DB, 19.2ºC WB) 50% RH
Total
BTU/H (kW)
98,200
Sensible
BTU/H (kW)
71,500
Flow Rate
GPM (l/s)
19.7
Pressure Drop
ft (kPa)
22.1
75ºF DB, 62.5ºF WB (23.9ºC DB, 16.9ºC WB) 50% RH
Total
BTU/H (kW)
72,900
Sensible
BTU/H (kW)
61,000
Flow Rate
GPM (l/s)
14.7
Pressure Drop
ft (kPa)
12.8
75ºF DB, 61.1ºF WB (23.9ºC DB, 16.2ºC WB) 45% RH
Total
BTU/H (kW)
68,200
Sensible
BTU/H (kW)
63,100
Flow Rate
GPM (l/s)
13.3
Pressure Drop
ft (kPa)
10.6
72ºF DB, 60.1ºF WB (22.2ºC DB, 15.6ºC WB) 50% RH
Total
BTU/H (kW)
59,900
Sensible
BTU/H (kW)
54,400
Flow Rate
GPM (l/s)
12.0
Pressure Drop
ft (kPa)
8.8
72ºF DB, 58.7ºF WB (22.2ºC DB, 14.8ºC WB) 45% RH
Total
BTU/H (kW)
56,200
Sensible
BTU/H (kW)
55,300
Flow Rate
GPM (l/s)
11.1
Pressure Drop
ft (kPa)
7.6

BR 102C

Indoor Unit
Fan Data (Blower A12x9AT)**
Standard Air, CFM (CMH)
Standard Fan Motor, hp (kW)
Opt. Fan Motor, hp (kW)
Ext Static, in. WG (Pa)

2800 (4760)
1-1/2 (1.1)
2 (1.5)
.3 (75)

Chilled Water Coil (V-Frame, at standard conditions)
Face Area, ft.2 (m2)
6.67 (.62)
Rows
4
Face Velocity, FPM (m/s)
405 (2.1)
Electric Reheat 2 Stage (Stainless Steel, Fin Tubular) - Std
Capacity, inc. motor heat, BTU/H (element kW)

56,200 (15)

Hot Water Reheat 180°F (82.2°C) EWT, 75°F (23.9°C) EAT Optional (includes std air volume and opt fan motor hp)
Capacity, inc. motor heat, BTU/H (kW) 88,700 (26.0)
Flow Rate, GPM (l/s)
5.0 (.32)
Pressure drop, ft. (kPa) 16.9 (50.4)
Infrared Humidifier - Standard
Capacity, lb/hr (kg/hr)
11 (5)
kW
4.8
Steam Generating Humidifier - Optional
Capacity, lb/hr (kg/hr)
11 (5)
kW
3.9
Filter Section - Efficiencies per ASHRAE 52.1 - Disposable
Type
20% Eff. available in 2" (51mm) - Std, or Opt 4" (102mm) Depths;
other Optional 4" (102mm) Eff. are: 30%, 40-45%, 60-65%

47.1

Nominal Size - in (mm)

28.5 x 29.5
(724 x 749)

Effective Surface Area, ft2 (m2)
24.1 (2.2)
Connection Sizes Challenger ITR Unit
CW Supply 1-1/8 OD Cu
CW Return 1-1/8 OD Cu
Humidifier Supply 1/4 OD Cu
Condensate Drain
1/2 FPT
Control Valve
Maximum design water pressure 150 psi (1034.3 kPa)
Valve Actuator Modulating
Sensors Proportional
Valve Body Three-Way
Valve Size, inches
1
Cv
13.9
Two-Way Valve (Optional)
Close-Off Pressure, PSI (kPa)
70 (483)

28.8
20.9
1.2
65.9
21.4
17.9
0.9
38.1
20.0
18.5
0.8
31.6
17.6
15.9
0.8
26.2

*

The net capacity data has fan motor heat factored in for all ratings and
the entering air condition of 72°F (22.2°C) and 50% RH is the standard
rating for ASHRAE 127-2001. All capacities are nominal values; actual
performance will be ±5%.

** Data rated with 2" 20% ASHRAE filter. Some options or combinations
of options may result in reduced airflow. Consult factory for
recommendations.

16.5
16.2
0.7
22.6

36

System Data

Table 15

Liebert Challenger ITR chilled water data, 50 Hz

Capacity Data kW (BTU/H) @ 7.2°C (45°F ) EWT, 5.6°C (10°F) Water Rise; Net Capacity Data
Indoor Unit
BR 101C
BR = Horizontal Flow
Indoor Unit
37.8ºC DB, 21.1ºC WB (100ºF DB, 70ºF WB) 20% RH, 6.7°C (12°F)
Water Rise

BR 101C

Fan Data (Blower A12x9AT)**

Total

kW (BTU/H)

34.0

116,000

Standard Air, CMH (CFM)

Sensible

kW (BTU/H)

31.9

109,000

Standard Fan Motor, kW (hp)

l/s (GPM)

1.3

19.9

Opt Fan Motor, kW (hp)

1.5 (2)

kPa (ft)

66.5

22.3

Ext Static, Pa (in. WG)

75 (.3)

Flow Rate
Pressure Drop

35ºC DB, 20.2ºC WB (95ºF DB, 68.3ºF WB) 24% RH,
6.1°C (11°F) Water Rise

4420 (2600)
1.1 (1-1/2)

Chilled Water Coil (V-Frame, at standard conditions)

Total

kW (BTU/H)

31.1

106,000

Face Area, m2 (ft2)

Sensible

kW (BTU/H)

29.0

99,100

Rows

l/s (GPM)

1.3

19.9

kPa (ft)

66.5

22.3

Electric Reheat 2-Stage (Stainless Steel, Fin Tubular) - Std
Hot Water Reheat 82.2°C (180°F) EWT, 23.9°C (75°F) EAT Optional (Includes std air volume and opt. fan motor hp)

Flow Rate
Pressure Drop

Capacity, element kW (inc. motor heat, BTU/H)

Total

kW (BTU/H)

28.2

96,100

Sensible

kW (BTU/H)

26.0

88,900

l/s (GPM)

1.3

20.0

Capacity, inc. motor heat, kW (BTU/H)

kPa (ft)

66.8

22.4

Flow Rate, l/s (GPM)

Pressure Drop

29.4ºC DB, 18ºC WB (85ºF DB, 64.4ºF WB) 32% RH

Pressure drop, kPa (ft.)

Total

kW (BTU/H)

24.7

84,200

Sensible

kW (BTU/H)

23.0

78,400

l/s (GPM)

1.1

17.6

kPa (ft)

52.7

17.7

Flow Rate
Pressure Drop

Sensible
Flow Rate
Pressure Drop

kW (BTU/H)

21.5

kW (BTU/H)

19.6

66,900

l/s (GPM)

1.0

15.8

kPa (ft)

42.9

14.4

27.5

94,000

Sensible

kW (BTU/H)

19.8

67,500

20% Eff. available in 51mm (2") - Standard, or Optional 102mm (4")
Depths; other Optional 102mm (4") Eff. are: 30%, 40-45%, 60-65%
Nominal Size - mm

28.5 x 29.5

Nominal Size - inches

724 x 749

Effective Surface Area - m2 (ft2)

2.2 (24.1)

Connection Sizes-Challenger ITR Unit

1.2

19.7

CW Supply

1 1/8 OD Cu

22.1

CW Return

1 1/8 OD Cu

69,700

Sensible

kW (BTU/H)

16.8

57,500

l/s (GPM)

0.9

14.7

kPa (ft)

38.1

12.8

Humidifier Supply

1/4 OD Cu

Condensate Drain

1/2 FPT

Control Valve
Maximum design water pressure 1034.4 kPa (150 PSI)

23.9ºC DB, 16.2ºC WB (75ºF DB, 61.1ºF WB) 45% RH

Valve Actuator

Modulating

Sensors

Proportional
Three-Way

Total

kW (BTU/H)

19.0

64,800

Valve Body

Sensible

kW (BTU/H)

17.4

59,500

Valve Size, in.

l/s (GPM)

0.8

13.3

kPa (ft)

31.6

10.6

Cv
Close Off Pressure - kPa (PSI)

Total

kW (BTU/H)

16.7

57,100

Sensible

kW (BTU/H)

15.1

51,400

l/s (GPM)

0.8

12.0

kPa (ft)

26.2

8.8

*

kW (BTU/H)

15.7

53,500

Sensible

kW (BTU/H)

15.4

52,400

l/s (GPM)

0.7

11.1

kPa (ft)

22.6

7.6

Flow Rate
Pressure Drop

483 (70)

The net capacity data has fan motor heat factored in for all ratings
and the entering air condition of 72°F (22.2°C) and 50% RH is the
standard rating for ASHRAE 127-2001.All capacities are nominal
values; actual performance will be ±5%.
** Data rated with 2" 20% ASHRAE filter. Some options or
combinations of options may result in reduced airflow. Consult
factory for recommendations.

22.2ºC DB, 14.8ºC WB (72ºF DB, 58.7ºF WB) 45% RH
Total

1
13.9

Two-Way Valve (Optional)

22.2ºC DB, 15.6ºC WB (72ºF DB, 60.1ºF WB) 50% RH

Pressure Drop

3.9

Filter Section - Efficiencies per ASHRAE 52.1 - Disposable
Type

65.9
20.4

Flow Rate

5 (11)

kW

kPa (ft)
kW (BTU/H)

Pressure Drop

4.8

l/s (GPM)

Total

Flow Rate

5 (11)

Steam Generating Humidifier - Optional

23.9ºC DB, 16.9ºC WB (75ºF DB, 62.5ºF WB) 50% RH

Pressure Drop

.32 (5.0)
50.4 (16.9)

Capacity, kg/hr (lb/hr)

kW (BTU/H)

Flow Rate

25.3 (86,200)

kW

73,500

Total

Pressure Drop

15 (56,200)

Capacity, kg/hr (lb/hr)

26.7ºC DB, 19.2ºC WB (80ºF DB, 66.5ºF WB) 50% RH

Flow Rate

1.9 (375)

Infrared Humidifier - Standard

26.7ºC DB, 17.1ºC WB (80ºF DB, 62.7ºF WB) 38% RH
Total

4

Face Velocity, m/s (FPM)

32.2ºC DB, 19.2ºC WB (90ºF DB, 66.5ºF WB) 28% RH

Flow Rate

.62 (6.67)

37

Dimensional Drawings

14.0 DIMENSIONAL DRAWINGS
Figure 11

Cabinet and floor planning dimensional data—Horizontal flow models
30-1/2"
(775mm)
31-1/2"
(800mm)
11-3/4"
(298mm)

8-1/2"
(216mm)

10-1/4"
(260mm)

43-5/16"
(1100mm)

UNIT TOP VIEW
UNIT
TOP VIEW
9-5/8"
(244mm)

1-5/8"
(41mm)
30-1/2"
(775mm)
32-1/2"
1-7/8"
(826mm)
(48mm)

13"
(330mm)

Standard Piping Location
12-1/2"
(318mm)

5/8"
Projection of
Display Bezel (16mm)

5-1/2"
(140mm)

Plenum Overhang
32-1/2"
(826mm)

12-5/8"
(321mm)
Standard Electrical Outlet
Location Through Unit
45-1/8"
(1147mm)

15-1/16"
(382mm)

32-1/2"
(826mm)

Discharge Air Opening
Remove Blocker Panel
for Air Discharge Left
and/or Right Side Panels

Filter Access
by Opening Door

91-1/16"
(2313mm)
Shaded area indicates
a recommended
clearance of 34" (864mm)
for component access

76"
(1930mm)

7/8" (22.2mm) Flange for
Duct or Plenum Connection

UNIT DIMENSIONAL DATA
REAR VIEW

50 Hz
Models

60 Hz
Models

Unit Weight
lb. (kg)

BR059E

BR060E

649 (294)

BR065A

BR067A

744 (337)

BR070WG

BR071WG

814 (369)

BR101C

BR102C

659 (299)

BM058G

BM061G

854 (387)

Blower Outlet with
1" (25.4mm) Flange

Shaded area indicates a recommended
clearance of 34" (864mm) for component access
UNIT DIMENSIONAL DATA
FRONT VIEW

38

DPN001523
Pg. 2, Rev. 1

Dimensional Drawings

Figure 12 Cabinet and floor planning dimensional data
30-1/2"
(775mm)

1"
(25mm)

30-1/2"
(775mm)

See Specification
Sheet for floor stand
height ordered

OPTIONAL FLOOR STAND
DIMENSIONAL DATA

SL-11897
Pg. 7

Figure 13 Cabinet and floor planning dimensional data—Split system—5-ton centrifugal fan condensing
unit

Air Intake

Air
Exhaust

Model

39

60 Hz

50 Hz

Net Weight
lbs (kg)

MC_65A

MC_64A

449 (204)

Dimensional Drawings

Figure 14 Cabinet and floor planning dimensional data—Split system—5-ton water/glycol-cooled
condensing unit

Model
60 Hz

50 Hz

Net Weight
lbs (kg)

MC_69W

MC_68W

282 (128)

40

Dimensional Drawings

Figure 15 Cabinet and floor planning dimensional data—Split System—Propeller fan condensing unit

C

Fan Rotation
CCW
(left side)

Removable (Right ) panel
for access to refrigeration component
A

Right Air
Discharge

Left Air
Intake

Shaded area indicates
a minimum clearance of
18" (457mm) for proper air flow

B

C

C

C

C

C

Shaded area indicates
a minimum clearance of
18" (457mm) for proper air flow

Shaded area indicates
a recommended clearance of
24" (610mm) for for component
access and removal

Removable (front) panel for
access to high voltage and low voltage
connections and to refrigeration components

Outdoor Propeller Fan Condensing Unit
Model

Width (A)

60 Hz

50 Hz

PFH067A-_L

PFH066A-_L

Depth (C)

Height (B)

Dimensions - Inches (mm)
53 (1343)

18 (457)

41

36-1/4 (918)

Net Weight
lbs (kg)
351 (159)

SL-11081
Pg 4

Dimensional Drawings

Figure 16 Cabinet and floor planning dimensional data—Propeller fan condensing modules—Vertical air
discharge
Guard
Height

Top Air
Discharge

D

Right
Air
Intake

B
Left Air
Intake

Shaded area indicates
a recommended clearance
of 18" (457mm) for proper
air flow.

2"
(51mm)

A

C

Shaded area indicates
a recommended clearance
of 18" (457mm) for proper
air flow.

Removable front panel for
access to high voltage and
low voltage connections,
and refrigeration components.

36-1/8"
(918mm)

4-23/32"
(120mm)

4" Typ.
53-3/16"
(102mm)
(1351mm)
2" Typ.
(51mm)

25-3/32 "
(637mm)

1/2" Bolt-Down
Holes (6 places)

32-1/8"
(816mm)

2"
(51mm)

46-7/32 "
(1174mm)

Model Numbers

Shaded area indicates
a recommended clearance
of 24" (610mm) for component
access.

DPN000131
Rev. 0

Footprint Dimensions

Dimensional Data in. (mm)

2"
(51mm)

Module Weight

60 HZ

50 HZ

A

B

C

D

lbs (kg) net.

PFH067A-_H

PFH066A-_H

PFHZ67A-_H

PFHZ66A-_L

53
(1343)

36-1/4
(918)

38-1/2
(978)

5-1/2
(140)

488
(222)

Figure 17 Cabinet and floor planning dimensional data—Self-contained system—Air-cooled condenser or
drycooler

Liebert Lee-Temp Receiver
L = 40" (1016mm)
W = 7-1/2" (190mm)

42

Electrical Data

15.0 ELECTRICAL DATA
Table 16

Liebert Challenger ITR electrical data1—60 Hz
Self-Contained

Split System Evaporator or Chilled Water

BR067A, BR071WG, BM061G

Model Type

BR060E, BR102C

All Voltages Are 3 Phase Unless Noted Otherwise
208

Voltage

230

460

575

208

230

460

575

With Electric Reheat and Humidifier (Infrared or Steam Generating) (Note: See Table 17 for units w/SCR reheats.2)
1.5 hp (1.1 kW)

Motor

1.5 hp (1.1 kW)

FLA

68.0

65.0

32.3

24.6

60.6

55.4

28.1

24.6

WSA

83.6

80.0

39.7

30.8

75.8

69.3

35.1

30.8

OPD

90

90

40

30

80

70

40

35

2.0 hp (1.5 kW)

Motor

2.0 hp (1.5 kW)

FLA

69.8

66.6

33.1

25.2

62.4

57.0

28.9

25.2

WSA

85.4

81.6

40.5

31.5

78.0

71.3

36.1

31.5

OPD

90

90

45

30

80

80

40

35

3.0 hp (2.2 kW)

Motor

3.0 hp (2.2 kW)

FLA

72.9

69.4

34.5

26.4

65.5

59.8

30.3

26.4

WSA

88.5

84.4

41.9

33.0

81.9

74.8

37.9

33.0

OPD

90

90

45

35

90

80

40

35

Humidifier Only (Infrared or Steam Generating)
1.5 hp (1.1 kW)

Motor

1.5 hp (1.1 kW)

FLA

39.7

37.0

18.4

16.9

19.0

16.3

8.4

9.5

WSA

44.9

42.2

20.9

18.8

23.8

20.4

10.5

11.9

OPD

60

60

30

25

25

20

15

15

2.0 hp (1.5 kW)

Motor

2.0 hp (1.5 kW)

FLA

41.5

38.6

19.2

17.5

20.8

17.9

9.2

10.1

WSA

46.7

43.8

21.7

19.4

26.0

22.4

11.5

12.6

OPD

60

60

30

25

30

25

15

15

3.0 hp (2.2 kW)

Motor

3.0 hp (2.2 kW)

FLA

44.6

41.4

20.6

18.7

23.9

20.7

10.6

11.3

WSA

49.8

46.6

23.1

20.6

29.9

25.9

13.3

14.1

OPD

70

60

30

25

35

30

15

15

Electric Reheat Only (Note: See Table 17 for Self-contained units w/SCR reheats.2)
1.5 hp (1.1 kW)

Motor

1.5 hp (1.1 kW)

FLA

68.0

65.0

32.3

24.6

47.3

44.3

22.3

17.2

WSA

83.6

80.0

39.7

30.2

59.1

55.4

27.9

21.5

OPD

90

90

40

30

60

60

30

25

2.0 hp (1.5 kW)

Motor

2.0 hp (1.5 kW)

FLA

69.8

66.6

33.1

25.2

49.1

45.9

23.1

17.8

WSA

85.4

81.6

40.5

30.8

61.4

57.4

28.9

22.3

OPD

90

90

45

30

70

60

30

25

3.0 hp (2.2 kW)

Motor

3.0 hp (2.2 kW)

FLA

72.9

69.4

34.5

26.4

52.2

48.7

24.5

19.0

WSA

88.5

84.4

41.9

32.0

65.3

60.9

30.6

23.8

OPD

90

90

45

35

60

70

35

20

Without Electric Reheat and Humidifier
1.5 hp (1.1 kW)

Motor

1.5 hp (1.1 kW)

FLA

26.4

25.9

12.6

9.5

5.7

5.2

2.6

2.1

WSA

31.6

31.1

15.1

11.4

7.1

6.5

3.3

2.6

OPD

50

50

25

15

15

15

15

15

2.0 hp (1.5 kW)

Motor

2.0 hp (1.5 kW)

FLA

28.2

27.5

13.4

10.1

7.5

6.8

3.4

2.7

WSA

33.4

32.7

15.9

12.0

9.4

8.5

4.3

3.4

OPD

50

50

25

15

15

15

15

15

3.0 hp (2.2 kW)

Motor

3.0 hp (2.2 kW)

FLA

31.3

30.3

14.8

11.3

10.6

9.6

4.8

3.9

WSA

36.5

35.5

17.3

13.2

13.3

12.0

6.0

4.9

OPD
50
50
25
20
20
20
15
15
1. Contact factory for 380-3-60 data.
2. For Split System Evaporators with SCR reheat, use the values above.
The values above were calculated per UL Standard 1995.
FLA = Full Load Amps (Input Amps); WSA = Wire Size Amps (Minimum Supply Circuit Ampacity); OPD = Maximum Overcurrent Protective Device Size
RLA = Rated Load Amps; LRA = Locked Rotor Amps
* R = In the Row; M = In the Row with Econ-O-Coil

43

Electrical Data

Table 17

Self-contained with SCR reheat *

Voltage (3, 60 Hz)

208

230

460

575

Electric Reheat and Humidifier (Infrared or Steam
Generating)
Motor

1.5 hp (1.1 kW)
FLA

81.3

76.1

38.1

N/A

WSA

96.9

91.1

45.5

N/A

OPD

100

100

50

N/A

Motor

2.0 hp (1.5 kW)
FLA

83.1

77.7

38.9

N/A

WSA

98.7

92.7

46.3

N/A

OPD

100

100

50

N/A

Motor

3.0 hp (2.2 kW)
FLA

86.2

80.5

40.3

N/A

WSA

101.8

95.5

47.7

N/A

OPD

110

100

50

N/A

Electric Reheat Only
Motor

1.5 hp (1.1 kW)
FLA

68.0

65.0

32.3

N/A

WSA

83.6

80.0

39.7

N/A

OPD

90

90

40

N/A

Motor

2.0 hp (1.5 kW)
FLA

69.8

66.6

33.1

N/A

WSA

85.4

81.6

40.5

N/A

OPD

90

90

45

N/A

Motor

3.0 hp (2.2 kW)
FLA

72.9

69.4

34.5

N/A

WSA

88.5

84.4

41.9

N/A

OPD

90

90

45

N/A

Note: Compressor is locked on. Heater is same size as standard.
* Contact factory for 380-3-60 data.

44

Electrical Data

Table 18

Scroll compressor and main fan (for comparison purposes only) *

Voltage
(3, 60 Hz)

208

230

460

575

Scroll Compressor
RLA

20.7

20.7

10.0

7.4

LRA

128.0

128.0

63.0

49.0

Main Fan
Motor

1.5 hp (1.1 kW)

RLA

5.7

5.2

2.6

2.1

LRA

35.9

31.2

15.6

12.6

Motor

2.0 hp (1.5 kW)

RLA

7.5

6.8

3.4

2.7

LRA

46.9

40.8

20.4

16.2

Motor

3.0 hp (2.2 kW)

RLA

10.6

9.6

4.8

3.9

LRA

66.0

58.0

26.8

23.4

* Contact factory for 380-3-60 data.

Table 19

Outdoor condensing units

Electrical Data 60 Hz 95°F (35°C) Ambient

Electrical Data 60 Hz 105°F (40°C) Ambient

Voltage

Voltage

208/230-3-60

380-3-60

460-3-60

575-3-60

Model

PFH067A-_L

FLA

24.1

WSA

29.3

OPD

45.0

FLA

12.4

WSA

15.1

OPD

25.0

FLA

11.7

WSA

14.2

OPD
FLA
WSA

11.1

OPD

15.0

208/230-3-60

380-3-60

Model

PFH067A-_H3

FLA

24.2

WSA

29.4

OPD

50.0

FLA

12.4

WSA

15.1

OPD

25.0

FLA

11.7

WSA

14.2

20.0

OPD

20.0

9.1

FLA

9.3

WSA

11.3

OPD

15.0

460-3-60

575-3-60

45

Electrical Data

Table 20

Outdoor condensing units—Quiet-Line

Electrical Data 60 Hz, Quiet-Line, 95°F (35°C)
Voltage
208/230-3-60

380-3-60

460-3-60

575-3-60

Table 21

Model

PFHZ67A-_L

FLA

21.1

WSA

25.9

OPD

45.0

FLA

12.5

WSA

15.2

OPD

25.0

FLA

10.9

WSA

13.4

OPD

20.0

FLA

8.8

WSA

10.8

OPD

15.0

Indoor condensing units, air-cooled *

Electrical Data 60 Hz 95°F (35°C) Ambient
Voltage
208/230-3-60

460-3-60

575-3-60

Model

MC_65A

FLA

26.5

WSA

31.7

OPD

50.0

FLA

12.9

WSA

15.4

OPD

25.0

FLA

9.7

WSA

11.6

OPD

15.0

* Contact factory for 380-3-60 data.

Table 22

Indoor condensing units, water-cooled *

Voltage
208/230-3-60

460-3-60

575-3-60

Model

MC_69W

FLA

20.7

WSA

25.9

OPD

45.0

FLA

10.0

WSA

12.5

OPD

20.0

FLA

7.4

WSA

9.3

OPD

15.0

* Contact factory for 380-3-60 data.

46

Electrical Data

Table 23

Fan speed control condensers *

95°F (35°C) Ambient, 1 Phase - 60 Hz
CSF 104
Voltage
FLA

208/230

460

575

4.8

2.5

1.9

WSA

6.0

3.1

2.4

OPD

15.0

15.0

15.0

* Contact factory for 380-3-60 data.

Table 24

Liebert Lee-Temp condensers *

95°F (35°C) Ambient, 3 Phase - 60 Hz
CSL104
Voltage
FLA

208/230

460

575

3.5

1.7

1.4

WSA

4.4

2.1

1.8

OPD

15.0

15.0

15.0

* Contact factory for 380-3-60 data.

Table 25

Liebert Lee-Temp receiver heater pads for use w/CSL condensers

Volts

120

230

Watts/Pad

150

150

FLA

1.4

0.7

WSA

1.8

0.9

OPD

15

15

Separate electrical source required for continuous operation
of single phase heater pads for Liebert Lee-Temp.

Table 26

Drycooler and pump package - 95°F (35°C) ambient *

Voltage

208/230

460

575

112

112

112

Glycol
DSF Model
Pump Hp

3/4

3/4

3/4

FLA

7.0

3.3

2.7

WSA

7.9

3.7

3.1

OPD

15

15.0

15.0

DSF Model

174

174

174

Pump Hp

1.5

1.5

1.5

FLA

13.6

6.4

5.2

WSA

15.3

7.2

5.8

OPD

20

15.0

15.0

112

112

112

1-1/2

1-1/2

1-1/2

FLA

10.1

4.7

3.8

WSA

11.8

5.5

4.4

OPD

15

15

15

Glycol DS0174

GLYCOOL
DSO Model
Pump Hp

1. Pump and drycooler powered from same 3 phase feeder.
* Contact factory for 380-3-60 data.

47

Electrical Data

Table 27

Liebert Challenger ITR electrical data—50 Hz
Self-Contained

Split System Evaporator or Chilled Water

B*065A, 070WG, 058G

B*059E, 101C

Model Type
Voltage

3 Phase, 50Hz
200

230

380/415

200

230

380/415

With Electric Reheat and Humidifier (Infrared or Steam Generating) (Note: See Table 28 for units w/SCR reheats.1)
Motor
FLA

1.1 kW (1.5 hp)
66.0

Motor
FLA

64.4

34.4

58.1

1.5 kW (2.0 hp)
67.7

Motor
FLA

1.1 kW (1.5 hp)
30.8

1.5 kW (2.0 hp)

65.9

35.2

59.8

36.8

62.9

2.2 kW (3.0 hp)
70.8

54.8
56.3

31.6

2.2 kW (3.0 hp)

68.6

59.0

33.2

Humidifier Only (Infrared or Steam Generating)
Motor
FLA

1.1 kW (1.5 hp)
38.8

Motor
FLA

19.1

18.1

1.5 kW (2.0 hp)
40.5

Motor
FLA

36.4

1.1 kW (1.5 hp)

37.9
40.6

19.9

19.8

21.5

22.9

FLA
Motor
FLA

67.7

65.9

34.4

45.3

68.6

11.5

43.7

24.4

1.5 kW (2.0 hp)
35.2

47.0

36.8

50.1

2.2 kW (3.0 hp)
70.8

19.9
1.1 kW (1.5 hp)

1.5 kW (2.0 hp)

Motor
FLA

64.4

9.9

1)

1.1 kW (1.5 hp)
66.0

17.2
2.2 kW (3.0 hp)

Electric Reheat Only (Note: See Table 28 for units w/SCR reheats.
Motor

9.1

1.5 kW (2.0 hp)

2.2 kW (3.0 hp)
43.6

15.7

45.2

25.2

2.2 kW (3.0 hp)
47.9

26.8

Without Electric Reheat and Humidifier
Motor
FLA

1.1 kW (1.5 hp)
26.0

Motor
FLA

12.7

5.3

1.5 kW (2.0 hp)
27.7

Motor
FLA

25.3

1.1 kW (1.5 hp)

26.8
29.5

2.7

1.5 kW (2.0 hp)
13.5

7.0

15.1

10.1

2.2 kW (3.0 hp)
30.8

4.6
6.1

3.5

2.2 kW (3.0 hp)

1. For Split System Evaporators with SCR reheat, use the values above.
FLA = Full Load Amps (Input Amps)
RLA = Rated Load Amps
LRA = Locked Rotor Amps
* R = In The Row; M = In The Row with Econ-O-Coil

48

8.8

5.1

Electrical Data

Table 28

Self-contained with SCR reheat

Voltage
(3, 50 Hz)

200

230

380/415

Electric Reheat and Humidifier (Infrared or Steam
Generating)
Motor
FLA

1.1 kW (1.5 hp)
78.8

Motor
FLA

40.8

1.5 kW (2.0 hp)
80.5

Motor
FLA

75.5
77.0

41.6

2.2 kW (3.0 hp)
83.6

79.7

43.2

Electric Reheat Only
Motor
FLA

1.1 kW (1.5 hp)
66.0

Motor
FLA

34.4

1.5 kW (2.0 hp)
67.7

Motor
FLA

64.4
65.9

35.2

2.2 kW (3.0 hp)
70.8

68.6

36.8

Note: Compressor is locked on. Heater is same size as standard.

Table 29

Scroll compressor and main fan (for comparison only)

Voltage (3, 50 Hz)

200

230

380/415

Scroll Compressor
RLA

20.7

20.7

10.0

LRA

156.0

172.0

74.0

Main Fan
Motor

1.1 kW (1.5 hp)

RLA

5.3

4.6

2.7

LRA

35.8

31.2

17.9

Motor

1.5 kW (2.0 hp)

RLA

7.0

6.1

3.5

LRA

50.6

44.0

25.3

Motor

2.2 kW (3.0 hp)

RLA

10.1

8.8

5.1

LRA

58.5

51.0

29.3

49

Electrical Data

Table 30

Outdoor condensing units

Electrical Data 50 Hz 35°C (95°F) Ambient
Voltage

Model

PFH066A-_L

200/230-3-50

FLA

24.1

380/415-3-50

FLA

13.2

Electrical Data 50 Hz 40°C (105°F) Ambient
Voltage

Model

PFH066A-_H

200/230-3-50

FLA

24.2

380/415-3-50

FLA

13.2

Electrical Data 50 Hz Quiet-Line 35°C (95°F)
Voltage

Model

PFHZ66A-_L

200/230-3-50

FLA

22.5

380/415-3-50

FLA

12.4

Table 31

Indoor condensing units air-cooled

Electrical Data 50 Hz 35°C (95°F) Ambient
Voltage
380/415-3-50

Model

MC_64A

FLA

13.7

1. Consult factory for 200/230 volts.

Table 32

Indoor condensing units water-cooled

Voltage
380/415-3-50

Model

MC_68W

FLA

10.0

1. Consult factory for 200/230 volts.

Table 33

Fan speed control condensers

35°C (95°F) Ambient (1 Phase - 50 Hz)
CSF104
Voltage

200/230

FLA

Table 34

4.0

Liebert Lee-Temp condensers

35°C (95°F) Ambient (3 Phase - 50 Hz)
CSL104
Voltage
FLA

Table 35

200/230

380/ 415

3.5

1.7

Liebert Lee-Temp receiver heater pads; for use w/CSL condensers

Volts

230

Watts/Pad

150

FLA

0.7

Separate electrical source required for continuous operation of
single phase heater pads for Liebert Lee-Temp.

50

Electrical Data

Table 36

Drycooler only - 35°C (95°F) ambient, three-phase

Voltage (3, 50Hz)

200/230

380/415

DSF Model

112

112

FLA

3.5

1.7

DSO Model

112

112

FLA

3.5

1.7

DSO Model

174

174

FLA

7.0

3.4

Table 37

Drycooler only - 35°C (95°F) ambient, single phase

Voltage (1, 50Hz)

200/230

380/415

DSF Model

112

—

FLA

4.0

—

Table 38

Pumps

hp
1-1/2

FLA

200/230

380/415

5.4

3.0

51

Electrical Data

GUIDE SPECIFICATIONS—NOMINAL 23 OR 33KW ENVIRONMENTAL CONTROL SYSTEM
1.0

GENERAL

1.1

Summary
These specifications describe requirements for an environmental control system. The system shall be
designed to maintain temperature and relative humidity conditions within the room. The manufacturer shall design and furnish all equipment to be fully compatible with heat dissipation requirements of the site.

1.2

Design Requirements
The environmental control system shall be a Liebert Challenger ITR factory-assembled unit. Standard 60 Hz units shall be CSA (NRTL-C) certified. It shall be specifically designed for service from the
front and rear of the unit. The system shall be designed for draw-through air arrangement to insure
even air distribution to the entire face area of the coil.
Each system shall be capable of handling ____ CFM (CMH) at ____inches (mm) of water external
static pressure with a horizontal airflow pattern. It shall have a total cooling capacity of ____ BTU/HR
(kW), sensible cooling capacity of ____ BTU/HR (kW), based on the entering air condition of °F (°C)
dry bulb, and ____ °F (°C) wet bulb. These units are to be supplied with ____ Volt, ____ phase, ____ Hz
power supply. The humidifier shall have a capacity of ____ lbs/hr (kg/h). Reheat shall have a capacity
of _____ BTU/HR (kW). The main fan shall be ____ hp (kW).

1.3

Submittals
Submittals shall be provided with the proposal and shall include: Single-Line Diagrams; Dimensional, Electrical, and Capacity data; Piping and Electrical Connection Drawings.

2.0

PRODUCT

2.1

All Systems

2.1.1

Cabinet and Frame Construction
The frame shall be constructed of MIG welded tubular and formed steel. All frame components shall
be finished in a black, powder-coat finish to protect against corrosion. The exterior panels shall be
20 gauge steel and shall be powder coated with ____ color paint. The panels shall be insulated with a
minimum 1 in. (25.4mm), 1-1/2 lbs. (0.68 kg) density fiber insulation. Front and side panels shall have
captive, 1/4 turn fasteners.
The cabinet shall be designed so that all components are serviceable and removable from the front
and rear of the unit.

2.1.2

Fan and Motor Section
The fan shall be the centrifugal type, double width, double inlet. The shaft shall be heavy duty steel
with self-aligning ball bearings with minimum life span of 100,000 hours.
The fan motor shall be 1750 RPM and mounted on an adjustable base. The drive package shall be
sized for 200% of the fan motor horsepower, and equipped with an adjustable motor pulley. The
fan/motor assembly shall be mounted on (vibration isolators) (solid base). The fan shall be located to
draw air over the coil to ensure even air distribution and maximum coil performance.
High Efficiency Motor (Optional)
The fan motor shall be a ____ hp (kW) high efficiency motor with a full load efficiency of ____ %.

2.1.3

Filter
The filter shall be____ inches (mm) thick and rated not less than _____ % (20%, 30%, 40-45%, 60-65%)
efficiency based on ASHRAE 52.1.
Prefilter (Optional)
The prefilter shall be 2 in. (50.8mm) thick with an efficiency of 20% based on ASHRAE 52.1.
52

Electrical Data

2.1.4

Advanced Microprocessor Control (Standard)
The Advanced control processor shall be microprocessor based with a front monitor LCD display
panel and control keys for user inputs. The controls shall be menu driven with on-screen prompts for
easy user operation. The system shall allow user review and programming of temperature and humidity setpoints, alarm parameters, and setup selections including choice of control type. A password
shall be required to make system changes. For all user selections, the range of acceptable input (temperature, humidity, or time delay) shall be displayed on the monitor screen. The system shall provide
monitoring of room conditions, operational status in % of each function, component run times, date
and time, and four analog inputs from sensors provided by others.
Control
The control system shall allow programming of the following room conditions:
•
•
•
•

Temperature Setpoint 65 to 85°F (18-29°C)
Temperature Sensitivity +1 to +9.9°F (0.6 to 5.6°C) in 0.1° increments
Humidity Setpoint 20 to 80% RH
Humidity Sensitivity +1 to +30% RH

All setpoints shall be adjustable from the individual unit front monitor panel. The microprocessor can
be set within these ranges, however, the unit may not be able to control to extreme combinations of
temperature and humidity.
Temperature and Humidity Sensors shall be capable of being calibrated using the front monitor panel
controls to coordinate with other temperature and humidity sensors in the room.
Predictive Humidity Control
The microprocessor shall calculate the moisture content in the room and prevent unnecessary humidification and dehumidification cycles by responding to changes in dew point temperature.
Compressor Short-Cycle Control
The control system shall include a program to prevent compressor short-cycling.
System Auto-Restart
For start-up after power failure, the system shall provide automatic restart with a programmable (up
to 9.9 minutes in 6-second increments) time delay. Programming can be performed either at the unit
or from the central site monitoring system.
Sequential Load Activation
During start-up, or after power failure, the microprocessor shall sequence operational load activation
to minimize inrush current. Systems allowing multiple loads to start simultaneously are unacceptable.
Chilled Water/Hot Water/Econ-O-Coil Flush Cycles
Chilled water, hot water, and Econ-O-Cool coils (if unit is so equipped) shall be automatically flushed
to prevent the buildup of contaminants. Systems without this feature shall include the necessary
devices to bypass fluid into the coil on a programmed basis.
Front Monitor Display Panel
The microprocessor shall provide a front monitor LCD backlit display panel with 4 rows of 20 characters with adjustable contrast. This display (along with five front mounted control keys) shall be the
only operator interface required to obtain all available system information such as room conditions,
operational status, alarms, control and alarm setpoints, and all user selections including alarm
delays, sensor calibration, DIP switch selections, and diagnostics. All indicators shall be in language
form. No symbols or codes shall be acceptable.

53

Electrical Data

Alarms
The microprocessor shall activate an audible and visual alarm in event of any of the following conditions:
•
•
•
•
•
•
•
•
•
•
•
•
•
•

High Temperature
Low Temperature
High Humidity
Low Humidity
Short Cycle
Compressor Overload (Optional)
Main Fan Overload (Optional)
Humidifier Problem
High Head Pressure
Change Filter
Loss of Air Flow
Low Suction Pressure
Loss of Power
Custom Alarm (#1 to #4)

Custom alarms are four customer accessible alarm inputs to be indicated on the front panel. Custom
alarms can be identified with prepared (programmed) alarm labels for the following frequently used
inputs:
•
•
•
•
•

Water Under Floor
Smoke Detected
Standby GC Pump On
Loss of Water Flow
Standby Unit On

User customized text can be entered for two of the four custom alarms. Each alarm (unit and custom)
can be separately enabled or disabled, selected to activate the common alarm, and programmed for a
time delay of 0 to 255 seconds.
Audible Alarm
The audible alarm shall annunciate any alarm that is enabled by the operator.
Common Alarm
A programmable common alarm shall be provided to interface user selected alarms with a remote
alarm device.
Remote Monitoring
All alarms shall be communicated to the Liebert monitoring system with the following information:
date and time of occurrence, unit number, and present temperature and humidity.
Analog Inputs
The system shall include four customer accessible analog inputs for sensors provided by others. The
analog inputs shall accept a 4 to 20 mA signal. The user shall be able to change the input to 0 to 5
VDC or 0 to 10 VDC if desired. The gains for each analog input shall be programmable from the front
panel. The analog inputs shall be able to be monitored from the front panel.
Diagnostics
The control system and electronic circuitry shall be provided with self-diagnostics to aid in troubleshooting. The microcontroller board shall be diagnosed and reported as pass/not pass. Control inputs
shall be indicated as on or off at the front monitor panel. Control outputs shall be able to be turned on
or off from the front monitor panel without using jumpers or a service terminal. Each control output
shall be indicated by an LED on a circuit board.
Data Collection
54

Electrical Data

The control system shall maintain accumulative operating hours of compressor, reheat, humidifier,
fan motor, and Econ-O-Coil. The ten most recent alarms shall also be retained.
Communications
The microprocessor shall be compatible with all Liebert remote monitoring and control devices.

2.1.5

Advanced Microprocessor Control with Graphics (Optional)
The optional Advanced control processor shall be microprocessor based with a front monitor dot
matrix display panel and control keys for user inputs. The controls shall be menu driven with onscreen prompts for easy user operation. The system shall allow user review and programming of temperature and humidity setpoints, alarm parameters, and setup selections including choice of control
type. A password shall be required to make system changes. For all user selections, the range of
acceptable input (temperature, humidity, or time delay) shall be displayed on the monitor screen. The
system shall provide monitoring of room conditions, operational status in % of each function, component run times, date and time, and four analog inputs from sensors provided by others.
Control
The control system shall allow programming of the following room conditions:
•
•
•
•

Temperature Setpoint 65 to 85°F (18-29°C)
Temperature Sensitivity +1 to +9.9°F (0.6 to 5.6°C) in 0.1° increments
Humidity Setpoint 20 to 80% RH
Humidity Sensitivity +1 to +30% RH

All setpoints shall be adjustable from the individual unit front monitor panel.
Temperature and Humidity Sensors shall be capable of being calibrated using the front monitor panel
controls to coordinate with other temperature and humidity sensors in the room.
Predictive Humidity Control
The microprocessor shall calculate the moisture content in the room and prevent unnecessary humidification and dehumidification cycles by responding to changes in dew point temperature.
Compressor Short-Cycle Control
The control system shall include a program to prevent compressor short-cycling.
System Auto-Restart
For start-up after power failure, the system shall provide automatic restart with a programmable (up
to 9.9 minutes in 6-second increments) time delay. Programming can be performed either at the unit
or from the central site monitoring system.
Sequential Load Activation
During start-up, or after power failure, the microprocessor shall sequence operational load activation
to minimize inrush current. Systems allowing multiple loads to start simultaneously are unacceptable.
Chilled Water/Hot Water/Econ-O-Coil Flush Cycles
Chilled water, hot water, and Econ-O-Cool coils shall be automatically flushed to prevent the buildup
of contaminants. Systems without this feature shall include the necessary devices to bypass fluid into
the coil on a programmed basis.
Front Monitor Display Panel
The microprocessor shall provide a front monitor 240 x 120 dot matrix display panel with adjustable
backlighting. This display (along with five front mounted control keys) shall be the only operator
interface required to obtain all available system information such as room conditions, operational status, graphical data, alarms, control and alarm setpoints, and all user selections including alarm
delays, sensor calibration, DIP switch selections, and diagnostics. All indicators shall be in language
form. No symbols or codes shall be acceptable.

55

Electrical Data

Alarms
The microprocessor shall activate an audible and visual alarm in event of any of the following conditions:
•
•
•
•
•
•
•
•
•
•
•
•
•
•

High Temperature
Low Temperature
High Humidity
Low Humidity
Short Cycle
Compressor Overload (Optional)
Main Fan Overload (Optional)
Humidifier Problem
High Head Pressure
Change Filter
Loss of Air Flow
Low Suction Pressure
Loss of Power
Custom Alarm (#1 to #4)

Custom alarms are four customer accessible alarm inputs to be indicated on the front panel. Custom
alarms can be identified with prepared (programmed) alarm labels for the following frequently used
inputs:
•
•
•
•
•

Water Under Floor
Smoke Detected
Standby GC Pump On
Loss of Water Flow
Standby Unit On

User-customized text can be entered for all four custom alarms. Each alarm (unit and custom) can be
separately enabled or disabled, selected to activate the common alarm, and programmed for a time
delay of 0 to 255 seconds.
Audible Alarm
The audible alarm shall annunciate any alarm that is enabled by the operator.
Common Alarm
A programmable common alarm shall be provided to interface user selected alarms with a remote
alarm device.
Remote Monitoring
All alarms shall be communicated to the Liebert site monitoring system with the following information: date and time of occurrence, unit number, and present temperature and humidity.
Analog Inputs
The system shall include four customer accessible analog inputs for sensors provided by others. The
analog inputs shall accept a 4 to 20 mA signal. The user shall be able to change the input to 0 to 5
VDC or 0 to 10 VDC if desired. The gains for each analog input shall be programmable from the front
panel. The analog inputs shall be able to be monitored from the front panel.
Diagnostics
The control system and electronic circuitry shall be provided with self-diagnostics to aid in troubleshooting. The microcontroller board shall be diagnosed and reported as pass/not pass. Control inputs
shall be indicated as on or off at the front monitor panel.
Control outputs shall be able to be turned on or off from the front monitor panel without using jumpers or a service terminal. Each control output shall be indicated by an LED on a circuit board.

56

Electrical Data

Data Collection
The control system shall maintain accumulative operating hours of compressor, reheat, humidifier,
fan motor, Econ-O-Coil, and heat rejection. The sixty most recent alarms shall also be retained.
Graphing
The control shall display the following graphical data:
• Temperature, humidity, analog inputs
• Component operating status by hour
• Operating status
Communications
The microprocessor shall be compatible with all Liebert remote monitoring and control devices.

2.1.6

Infrared Humidifier (Standard)
The humidifier shall be of the infrared type consisting of high intensity quartz lamps mounted above
and out of the water supply. The evaporator pan shall be stainless steel and arranged to be serviceable without disconnecting water supply lines, drain lines or electrical connections. The complete
humidifier section shall be pre-piped ready for final connection. The infrared humidification system
shall use bypass air to prevent over-humidification of the controlled space. The auto flush system
shall automatically flush deposits from the humidifier pan. The system shall be field adjustable to
change the cycle time to suit local water conditions. The humidifier shall have a capacity of _____
lbs/hr (kg/h).

2.1.7

Steam Generating Humidifier (Optional)
The environmental control system shall be equipped with a steam generating humidifier that is controlled by the microprocessor control system. It shall be complete with disposable canister, all supply
and drain valves, steam distributor, and electronic controls. The need to change canister shall be
annunciated on the microprocessor control panel. The humidifier shall have a capacity of ____ lbs/hr
(kg/h).

2.1.8

Electric Reheat (Standard)
The low-watt density, 304/304, stainless steel, finned-tubular electric reheat coils shall be capable of
maintaining room dry bulb conditions when the system is calling for dehumidification. The reheat
section shall include UL recognized safety switches to protect the system from overheating. The
capacity of the reheat coils shall be ____ BTU/HR (kW), ____ kW, controlled in ____ stage(s).

2.1.9

Hot Water Reheat (Optional)
The hot water reheat coil shall have copper tubes and aluminum fins with a capacity of _____
BTU/HR (kW) when supplied with _____ °F (°C) entering water temperature at _____GPM (l/s) flow
rate. Maximum pressure drop shall be _____ PSI (kPa). The control system shall be factory pre-piped
with a 2-way motorized control valve and cleanable Y-strainer.

2.1.10 SCR Electric Reheat (Optional)
The SCR (Silicon Controlled Rectifier) controller shall proportionally control the stainless steel
reheats to maintain the selected room temperature. The rapid cycling made possible by the SCR controller provides precise temperature control, and the more constant element temperature improves
heater life. The capacity of the reheat coils shall be _____ BTU/HR (kW).

2.1.11 Floor Stand (Optional)
The floor stand shall be constructed of a heliarc-welded tubular steel frame. The floor stand shall be
coated using an autodeposition process to protect against corrosion. The floor stand shall have adjustable legs with vibration isolation pads. The floor stand shall be: 9 in. (23cm), 12 in. (30cm), 15 in.
(38cm), 18 in. (46cm), 21 in. (53cm), 24 in. (61cm) high.

57

Electrical Data

2.1.12 Plenum
The unit shall be supplied with a (2 way) (3 way) (4 way) (low-profile, cold-aisle) air discharge plenum. The plenum shall be 18 in. (457mm) high or less, insulated and powder painted the same color
as the room unit.

2.1.13 Disconnect Switch, Locking Type
The manual disconnect switch shall be mounted in the high voltage section of the electrical panel. The
switch shall prevent access to the high voltage electrical components until switched to the “OFF” position.

2.1.14 Remote Sensors (Required for Select Applications)
The unit shall be supplied with remote temperature and humidity sensors. The sensors shall be connected to the unit by a 30 ft. (9m), 60 ft. (18m), 90 ft. (27m), 120 ft. (36m), 150 ft. (45m) shielded cable.

2.1.15 Remote Sensor Installation Location
The remote temperature and humidity sensor should be installed in the cold aisle in front of the
equipment to be cooled. It should be mounted at the farthest point from the cooling unit that supply
air needs to reach but still within the unit’s area of influence. The sensor should be installed at the
highest point that equipment will draw in cooled air.

2.1.16 Firestat (Optional)
The firestat shall immediately shut down the system when high temperatures are detected. The firestat shall be mounted in the electrical panel with the sensing element in the return air.

2.1.17 Smoke Detector (Optional)
The smoke detector senses the return air, shuts down the unit upon detection, and sends visual and
audible alarm. Dry contacts are available for a remote customer alarm. This smoke detector is not
intended to function as or replace any room smoke detection system that may be required by local or
national codes.

2.1.18 Condensate Pump
The condensate pump shall have the capacity of ____ GPH (l/h) at ____ ft. (m) head @ ____ V - ____ Hz.
It shall be complete with (single) (dual) integral float switch, pump, motor assembly, and reservoir.

2.2

Direct Expansion Self-Contained Systems
Direct Expansion Coil
The evaporator coil shall have _____ sq.ft. (sq. m) face area, _____ rows deep. It shall be configured as
V-frame and be constructed of copper tubes and aluminum fins and have a maximum face velocity of
_____ ft. per minute (m/s) at _____ CFM (CMH). The coil shall be provided with a stainless steel drain
pan.
Refrigeration System
The refrigeration system shall consist of a high efficiency scroll compressor, hot gas bypass, pressure
safety switches, externally equalized expansion valve, filter drier, refrigerant sight glass and moisture indicator.

2.2.1

Air-Cooled Self-Contained Systems
Pump Down Control
A liquid line solenoid valve shall be provided for pump down control.
Crankcase Heater
A crankcase heater shall be provided for additional system protection from refrigerant migration during off cycles.
Propeller Fan Condenser (Standard)
The Liebert manufactured air-cooled condenser shall be the low profile, slow speed, direct-drive, propeller-fan type. The condenser shall be constructed of aluminum and contain a copper tube, aluminum fin coil with an integral electric control panel. The system shall be designed for _____ °F (°C)
ambient. The air-cooled condenser shall have a _____ Volt, _____ phase, ____ Hz power supply.
58

Electrical Data

Fan Speed Control (FSC) Head Pressure Control (Standard)
The winter control system for the air-cooled condenser shall be Liebert Fan Speed Control (FSC). The
variable speed motor shall turn on at 10% of the supply voltage and modulate in response to head
pressure to a full speed of 1050 RPM. It shall be designed with ball bearings, permanent lubrication,
and internal overload protection.
The control system shall be complete with transducers, thermostats and electrical control circuit, factory prewired and tested in an integral control panel. The transducer shall automatically sense the
head pressure of the compressor and control the variable speed fan on the air-cooled condenser to
properly maintain the head pressure.
The fan speed control system shall provide positive start-up and operation in ambient temperature as
low as -20°F (-29°C). Included with the fan speed control system shall be a solid state winter start kit
as an integral feature of the electronic control panel.
Liebert Lee-Temp Head Pressure Control (Optional)
The winter control system for the air-cooled condenser shall be “Liebert Lee-Temp.” The Liebert LeeTemp system shall allow startup and positive head pressure control with ambient temperatures as
low as -30°F (-34.4°C). The Liebert Lee-Temp package shall include: insulated receiver, pressure
relief valve for each circuit, head pressure three-way control valve, and rotalock valve for isolating the
refrigerant charge. The Lee- Temp receiver shall be factory insulated and mounted ready for the field
connection to the air-cooled condenser. The Liebert Lee-Temp heater shall be (150) (300) _____ Watt
and require a separate power supply of (115) (230) _____ Volt, single phase, _____ Hz.
Centrifugal Fan Condenser (Optional)
The system shall be supplied with a centrifugal fan condenser (LCC). The condenser shall be constructed of galvanized steel with a copper tube, aluminum fin coil. The heavy duty fan shall be the
centrifugal type, double width, double inlet. The 1750 RPM (1450 RPM @ 50 Hz) fan motor shall be
mounted on an adjustable base, and equipped with an adjustable motor pulley. A Liebert Lee- Temp
head pressure control system shall be field piped to the unit. Electrical controls shall be in a raintight enclosure.
The system shall be designed for _____ °F (°C) ambient. The air-cooled condenser shall have a _____
Volt, 3 phase, _____ Hz power supply.

2.2.2

Water or Glycol-Cooled Self-Contained Systems
Indoor Unit Condenser
The water/glycol system shall be equipped with a coaxial condenser having a total pressure drop of
_____ ft. of water (kPa) and a flow rate of _____ GPM (l/s) with _____ °F (°C) entering water/glycol
temperature.
Two-way Water Regulating Valve with Bypass (Standard)
The condenser circuit shall be pre-piped with a headpressure actuated two-way regulating valve with
bypass.
Three-Way Water Regulating Valve (Optional)
The condenser circuit shall be pre-piped with a head pressure actuated three-way regulating valve.
Design Pressure
The condenser water/glycol circuit shall be designed for a pressure of [(150 PSI (1034 kPa)) (350 PSI
(2413 kPa))].
Crankcase Heater (Optional)
A crankcase heater is provided to prevent the migration of refrigerant to the compressor during off
cycles.
Hot Gas Reheat (Optional)
The complete hot gas reheat system shall include a copper tube, aluminum fin coil, three-way solenoid valve, and refrigerant check valve. The capacity of the coil shall be _____ BTU/HR (kW).
70/30 Cu-Ni Econ-O-Coil
This coil replaces the standard copper tube coil to provide improved resistance to corrosion.
This option must be specified whenever a GLYCOOL or Dual Cooling Source system is applied to a
cooling tower loop or other open water system.
59

Electrical Data

Outdoor Unit
Propeller Fan Drycooler (Standard)
The Liebert manufactured drycooler shall be the low profile, slow speed, direct drive propeller fan
type. The drycooler shall be constructed of aluminum and contain a copper tube aluminum fin coil
with an integral electric control panel. The drycooler shall be designed for _____ °F (°C) ambient.
Centrifugal Fan Drycooler (Optional)
The system shall be supplied with a centrifugal fan drycooler (LCD). The drycooler shall be constructed of galvanized steel with a copper tube, aluminum fin coil. The heavy duty fan shall be the
centrifugal type, double width, double inlet. The 1750 RPM (1450 RPM @ 50 Hz) fan motor shall be
mounted on an adjustable base, and equipped with an adjustable motor pulley. A three-way control
valve and thermostat shall maintain the desired fluid temperature. Electrical controls shall be in a
rain-tight enclosure. The system shall be designed for _____ °F (°C) ambient. The drycooler shall have
a _____ Volt, 3 phase, _____ Hz power supply.
Single Glycol Pump Package (Standard)
This system shall be provided with a centrifugal pump mounted in a weatherproof and vented enclosure. The pump shall be rated for _____ GPM (l/s) at _____ ft. of head (kPa), and operate on _____ Volt,
3 phase, _____ Hz.
Dual Glycol Pump Package (Optional)
The dual pump package shall include pumps, enclosure, and field mounted flow switch. The pumps
shall be wired to the drycooler control box which includes a lead/lag switch for the pumps. The
standby pump shall automatically start upon failure of the lead pump. Each pump shall be rated
_____ for GPM (l/s) at _____ feet of head (kPa).

2.2.3

GLYCOOL Self-Contained Systems
Econ-O-Coil
The Econ-O-Coil shall be constructed of copper tubes and aluminum fins and be located upstream of
the evaporator coil. The Econ-O-Coil shall be designed for closed-loop applications using properly
treated glycol solutions. Applications using a cooling tower loop or other open water system must
specify a 70/30 Cu-Ni Econ-O-Coil for improved corrosion resistance. The coil shall be rated at _____
BTU/HR (kW) sensible cooling capacity with a 45°F (7.2°C) entering glycol solution temperature. The
GLYCOOL coil shall require _____ GPM (l/s) and the total unit pressure drop shall not exceed _____
feet of water (kPa) when in the free cooling mode.
Three-way GLYCOOL Valve
The Econ-O-Coil coil shall be equipped with a fully proportional three-way control valve. This motorized control valve shall control the amount of flow to the Econ-O-Coil and maintain constant temperature and relative humidity.
Glycol Condenser
The glycol system shall be equipped with a coaxial condenser having a total pressure drop of _____
feet of water (kPa) and a flow rate of _____ GPM (l/s), with _____ °F (°C) entering 40% ethylene glycol
temperature.
Three-way Water Regulating Valve
The condenser circuit shall be pre-piped with a head pressure actuated three-way water regulating
valve.
Design Pressure
The Econ-O-Coil/condenser circuit shall be designed for a pressure of [(150 PSI (1034 kPa)) (300 PSI
(2069 kPa))].
Comparator Circuit
The system shall be equipped with a microprocessorcontrolled comparator sensor that permits freecooling operation whenever entering glycol temperature is below return-air temperature.
60

Electrical Data

Propeller Fan Drycooler (Standard)
The Liebert manufactured drycooler shall be the low profile, slow speed, direct drive propeller fan
type. The drycooler shall be constructed of aluminum and contain a copper tube aluminum fin coil
with an integral electric control panel. The drycooler shall be designed for _____ °F (°C) ambient.
Centrifugal Fan Drycooler (Optional)
The system shall be supplied with a centrifugal fan drycooler (LCD). The drycooler shall be constructed of galvanized steel with a copper tube, aluminum fin coil. The heavy duty fan shall be the
centrifugal type, double width, double inlet. The 1750 RPM (1450 RPM @ 50 Hz) fan motor shall be
mounted on an adjustable base, and equipped with an adjustable motor pulley. A three-way control
valve and thermostat shall maintain the desired fluid temperature. Electrical controls shall be in a
rain tight enclosure. The system shall be designed for _____ °F (°C) ambient. The drycooler shall have
a _____ Volt, 3 phase, _____ Hz power supply.
Single Glycol Pump Package (Standard)
This system shall be provided with a centrifugal pump mounted in a weatherproof and vented enclosure. The pump shall be rated for _____ GPM (l/s) at _____ ft. of head (kPa), and operate on _____ Volt,
3 phase, _____ Hz.
Dual Glycol Pump Package (Optional)
The dual pump package shall include pumps, enclosure, and field mounted flow switch. The pumps
shall be wired to the drycooler control box which includes a lead/lag switch for the pumps. The
standby pump shall automatically start upon failure of the lead pump. Each pump shall be rated for
_____ GPM (l/s) at _____ feet of head (kPa).

2.3

Direct Expansion Split Systems
Direct Expansion Coil
The evaporator coil shall have _____ sq.ft. (sq. m) face area, _____ rows deep. It shall be configured as
(A) (V) frame and be constructed of copper tubes and aluminum fins and have a maximum face velocity of _____ ft. per minute (m/s) at _____ CFM (CMH). The coil shall be provided with a stainless steel
drain pan.
Refrigeration System
The refrigeration system shall consist of a rugged scroll compressor, pressure safety switches, externally equalized expansion valve, filter dryer, and a refrigerant sight glass and moisture indicator.

Centrifugal Fan Condensing Unit
The condenser coil shall be constructed of copper tubes and aluminum fins. The condensing unit shall
be factory assembled, charged with refrigerant and sealed.
Components shall include scroll compressor, high-pressure switch, Liebert Lee-Temp refrigerant
receiver, head pressure control valve, and liquid line solenoid valve.
The condensing unit shall be designed for 95°F (35°C) ambient and be capable of operation to -20°F
(-29°C) ambient.
A hot gas bypass circuit shall be provided to reduce compressor cycling and improve operation under
low load conditions.
The condenser fan shall be designed for _____ CFM (CMH) at _____ inches (mm) external static pressure.
(Optional) Disconnect
Factory installed non-fused disconnect switch allows unit to be turned off for maintenance.
5-Ton Models
The fan/motor assembly shall be belt drive. Condensing unit must be hard piped with the evaporator.
Sweat adapters are shipped loose with all evaporators for use on the 5 ton condensing units.

61

Electrical Data

Propeller Fan Condensing Unit
The condenser coil shall be constructed of copper tubes and aluminum fins with a direct drive propeller type fan and shall include a scroll compressor, high pressure switch, Liebert Lee-Temp receiver,
head pressure control valve, and liquid line solenoid valve. All components shall be factory assembled,
charged with refrigerant and sealed. No brazing, dehydration, or charging shall be required. Condensing unit shall be designed for 95°F (35°C) ambient and be capable of operation to -30°F (-34.4°C).
A hot gas bypass circuit shall be provided to reduce compressor cycling and improve operation under
low load conditions.
(Optional) Quiet-Line Models
The condensing unit shall be designed to operate at a sound level less then 58 dBa.
(Optional) High Ambient Models
The outdoor condensing unit shall be designed for design ambient operation of 105°F (40.6°C).
5-Ton Models
Condensing unit must be hard piped with the evaporator. Sweat adapters are shipped loose with all
evaporators for use on the 5 ton condensing units.

2.3.1

Water or Glycol-Cooled Split Systems
Water or Glycol-Cooled Condensing Unit
The water/glycol condensing unit shall be equipped with a coaxial condenser having a total system
pressure drop of _____ ft. of water (kPa) and a flow rate of _____ GPM (l/s) with _____ °F (°C) entering
water/glycol temperature.
Components shall include scroll compressor and high-pressure switch. The condensing unit shall be
factory charged with R-22 refrigerant.
The condenser circuit shall be pre-piped with a [(2-way) (three-way)] regulating valve which is headpressure actuated.
The condenser water/glycol circuit shall be designed for a static operating pressure of [(150 PSI
(1034 kPa)) (350 PSI (2413 kPa))].
A hot gas bypass circuit shall be provided to reduce compressor cycling and improve operation under
low load conditions.
A 70/30 Cu-Ni Econ-O-Coil must be specified whenever a GLYCOOL or Dual Cooling Source system is
applied to a cooling tower loop or other open water system.
(Optional) Disconnect
Factory installed non-fused disconnect switch allows unit to be turned off for maintenance.
5-Ton Models
Condensing unit must be hard piped with the evaporator. Sweat adapters are shipped loose with all
evaporators for use on the 5 ton condensing units.
Propeller Fan Drycooler (Standard)
The Liebert manufactured drycooler shall be the low profile, slow speed, direct drive propeller fan
type. The drycooler shall be constructed of aluminum and contain a copper tube aluminum fin coil
with an integral electric control panel. The drycooler shall be designed for _____ °F (°C) ambient.
Centrifugal Fan Drycooler (Optional)
The system shall be supplied with a centrifugal fan drycooler (LCD). The drycooler shall be constructed of galvanized steel with a copper tube, aluminum fin coil. The heavy duty fan shall be the
centrifugal type, double width, double inlet. The 1750 RPM (1450 RPM @ 50 Hz) fan motor shall be
mounted on an adjustable base, and equipped with an adjustable motor pulley. A three-way control
valve and thermostat shall maintain the desired fluid temperature. Electrical controls shall be in a
rain tight enclosure. The system shall be designed for _____ °F (°C) ambient. The drycooler shall have
a _____ Volt, 3 phase, _____ Hz power supply.

62

Electrical Data

Single Glycol Pump Package (Standard)
This system shall be provided with a centrifugal pump mounted in a weatherproof and vented enclosure. The pump shall be rated for GPM (l/s) at _____ ft. of head (kPa), and operate on _____ Volt,
3 phase, _____ Hz.
Dual Glycol Pump Package (Optional)
The dual pump package shall include pumps, enclosure, and field mounted flow switch. The pumps
shall be wired to the drycooler control box which includes a lead/lag switch for the pumps. The
standby pump shall automatically start upon failure of the lead pump. Each pump shall be rated for
_____ GPM (l/s) at _____ feet of head (kPa).

2.4

Chilled Water Self-Contained Systems Chilled Water Coil
The cooling coil shall have a minimum of _____ sq. ft. (sq. m) face area, _____ rows deep. The coil shall
be controlled by a modulating control valve. The chilled water coil shall be designed for closed-loop
applications using properly maintained water. It shall be configured as a V-frame and be constructed
of copper tubes and aluminum fins and have a maximum face velocity of _____ ft. per minute (m/s) at
_____ CFM (CMH). The water circuit shall be designed to distribute water into the entire coil face
area. The coil shall be supplied with _____ °F (°C) entering water temperature, with a _____ °F (°C)
temperature rise. The coil shall be supplied with _____ GPM (m/s) of chilled water and the pressure
drop shall not exceed _____ PSI (kPa). The coil assembly shall be mounted in a stainless steel condensate drain pan.
Three-way Chilled Water Valve (Standard)
The water circuit shall include a three-way modulating valve. The microprocessor control shall position the valve in response to room conditions. Cooling capacity will be controlled by bypassing chilled
water around the coil.
Two-way Chilled Water Valve (Optional)
The water circuit shall include a two-way modulating valve. The microprocessor control shall position
the valve in response to room conditions. The minimum close-off pressure of the valve/actuator assembly shall be _____ PSI (kPa).
Design Pressure
The chilled water circuit shall be designed for a pressure of [(150 PSI (1034 kPa)) (400 PSI (2758
kPa))].
Flow Switch (Optional)
The flow switch shall activate the alarm system should the chilled water supply be interrupted. The
switch shall be factory mounted and wired.

63

Electrical Data

2.5

Comprehensive Monitoring Solutions
(For detailed Guide Specifications on these products, refer to information posted at www.liebert.com)
•
•
•
•
•
•
•

•
•

Liebert SiteScan Web System
Liebert SiteLink Module
Liebert Nform
Liebert IntelliSlot Web/485 Card With Adapter and Liebert IntelliSlot 485 Card With
Adapter
Environmental Discrete Outputs Card (ENV-DO)
Remote Contact Monitor
• RCM4
Autochangeover Controllers
• AC3
• RAC2-8
Universal Monitor
Leak Detection
• Direct Read Module
• Zone Sensor
• Spot Sensor

3.0

EXECUTION

3.1

Installation of Environmental Control Units

3.1.1

General
Install environmental control units in accordance with manufacturer’s installation instructions.
Install units plumb and level, firmly anchored in locations indicated, and maintain manufacturer’s
recommended clearances.

3.1.2

Electrical Wiring
Install and connect electrical devices furnished by manufacturer but not specified to be factory
mounted. Furnish copy of manufacturer’s electrical connection diagram submittal to electrical contractor.

3.1.3

Piping Connections
Install and connect devices furnished by manufacturer but not specified to be factory mounted. Furnish copy of manufacturer’s piping connection diagram submittal to piping contractor.

3.1.4

Supply and Drain Water Piping
Connect water supply and drains to air conditioning unit. Provide pitch and trap as manufacturer’s
instructions and local codes require.

3.2

Field Quality Control
Start up environmental control units in accordance with manufacturer’s start up instructions. Test
controls and demonstrate compliance with requirements.

64

Ensuring The High Availability
Of Mission-Critical Data And Applications.

Emerson Network Power, the global leader in enabling business-critical
continuity, ensures network resiliency and adaptability through
a family of technologies—including Liebert power and cooling
technologies—that protect and support business-critical systems.
Liebert solutions employ an adaptive architecture that responds
to changes in criticality, density and capacity. Enterprises benefit
from greater IT system availability, operational flexibility and
reduced capital equipment and operating costs.

Technical Support / Service
Web Site
www.liebert.com
Monitoring
800-222-5877
Liebert.monitoring@emerson.com
Outside the US: 614-841-6755
Single-Phase UPS
800-222-5877
upstech@emersonnetworkpower.com
Outside the US: 614-841-6755
Three-Phase UPS
800-543-2378
powertech@emersonnetworkpower.com
Environmental Systems
800-543-2778
Outside the United States
614-888-0246

Locations
United States
1050 Dearborn Drive
P.O. Box 29186
Columbus, OH 43229
Europe
Via Leonardo Da Vinci 8
Zona Industriale Tognana
35028 Piove Di Sacco (PD) Italy
+39 049 9719 111
Fax: +39 049 5841 257
Asia
7/F, Dah Sing Financial Centre
108 Gloucester Road, Wanchai
Hong Kong
852 2572220
Fax: 852 28029250

While every precaution has been taken to ensure the accuracy
and completeness of this literature, Liebert Corporation assumes no
responsibility and disclaims all liability for damages resulting from use of
this information or for any errors or omissions.
© 2008 Liebert Corporation
All rights reserved throughout the world. Specifications subject to change
without notice.
® Liebert is a registered trademark of Liebert Corporation.
All names referred to are trademarks
or registered trademarks of their respective owners.

SL-11955 _REV0_07-08

Emerson Network Power.
The global leader in enabling Business-Critical Continuity.
AC Power
Embedded Computing
Embedded Power
Connectivity
DC Power

Monitoring

Outside Plant
Power Switching & Controls
Precision Cooling

EmersonNetworkPower.com
Racks & Integrated Cabinets
Services
Surge Protection

Business-Critical Continuity, Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co.
©2008 Emerson Electric Co.



---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.6
Linearized                      : Yes
Page Mode                       : UseOutlines
XMP Toolkit                     : Adobe XMP Core 4.0-c320 44.284297, Sun Apr 15 2007 17:19:00
Producer                        : Acrobat Distiller 8.1.0 (Windows)
Creator Tool                    : FrameMaker 7.0
Modify Date                     : 2008:07:18 11:51:53-04:00
Create Date                     : 2008:07:18 11:40:01Z
Metadata Date                   : 2008:07:18 11:51:53-04:00
Format                          : application/pdf
Title                           : untitled
Document ID                     : uuid:72130f8c-59ef-4ab9-adb8-2cdcac67ff99
Instance ID                     : uuid:b1973747-e23a-4223-8e52-98a028b57511
Has XFA                         : No
Page Count                      : 74
Creator                         : FrameMaker 7.0

EXIF Metadata provided by EXIF.tools