Liebert DM

 
PRODUCTS​

Liebert DM
High Performance, Sensible Cooling for Small Computer Rooms and Network Closets

Liebert DM delivers enterprise level precision cooling to small computer rooms and network closets. It is designed for yearround temperature and humidity control for IT applications across the critical infrastructure.

The Liebert DM offers a selection of variants to fit your infrastructure's requirements and conditions. It also features communication capabilities to the critical infrastructure manager for easy monitoring of the temperature across the IT infrastructure.

The Liebert DM variants:

  • Air Cooled / Water Cooled
  • Chilled Water up to 25kW capacity

Energy saving

  • High sensible heat ratio and high energy effi ciency
  • Equipped with Copeland Scroll Compressors
  • Provides stable temperature and humidity condition
  • Fans for outdoor units feature easy to access full range speed regulation
  • Manageable and uniqe Eco-Mode option
  • Energy saving component options
  • V-shaped evaporator**
  • Group control function offered for units of the same model**

Space Saving

  • Small footprint – 100% front door access

User-Friendly and Maintenance-Free

  • Large screen display with multi-level password protection and expert fault-diagnosis functions
  • Automatic startup on power and scheduled startup also available
  • Standard RS485 Monitoring Interface
  • Equipped with alarm for irregularities on blast reduction, fan failure and filter clogging
  • Email and SMS notifi cation (thru the Liebert® RDU™) for remote monitoring functions

Highly adaptive

  • 24/7 operation capable
  • Ultra wide input voltage range; multiple power protection functions
  • Environment adaptability: adoption to outdoor temperature while meeting cooling requirements
  • Adaptive to heat dissipation of the main equipment


**For 16kW units

Features and Benefits

Liebert DM - Air cooled

Model

DMH07

DMH12

Capacities, kW

7.5

12.5

Available configuration

Upflow Plenum Only

Indoor Unit Power Supply

230V/3ph/60Hz+N
380V/3ph/50Hz or 230V/3ph/60Hz+N
380V/3ph/60Hz+N

Condenser Type

Outdoor Condenser

Refrigerant

R407C

Humidifier1

Electrode

Electric Heater Power, kW

3.2

No. of fans

1

Indoor Unit Dimension HxWxD), mm

1750 x 510 x 385

1850 x 600 x 500

Outdoor Unit Dimension (HxWxD), mm

830 x 790 x 355

1240 x 790 x 355

Indoor Net Weight, kg

95

145

Outdoor Net Weight, kg

40

60

Liquid line diameter, inch

1/2"

5/8"

Discharge line diameter, inch

3/4"

5/8"

FLA2, A

8-20

11-22

Air breaker

32

 

Chilled Water

 

 

 

 

Model

DMH09

DMH12

DMH17

DMH25

Capacities, kW

8.2

11.6

16.3

23.2

Available configuration

Upflow Plenum and Downflow

Power Supply

380V/3ph/50Hz or 380V/3ph/60Hz+N

Refrigerant

Chilled Water

Humidifier1

Electrode Humidifier

Electric Heater Power, kW

4

4

6

6

No. of fans

1

1

2

2

Dimension (HxWxD), mm

1740 x 510 x 390

1900 x 610 x 580

1740 x 1105 x 405

1900 x 1205 x 575

Net Weight, kg

90

130

170

210

FLA2, A

12

12

18

18

Air breaker

25

25

32

32

Water flow, l/s

0.4

0.6

0.8

1

Inlet/Outlet pipe diameter, inch

1"

1"

1.25"

1.25"

Total Pressure Drop, kPa

46

62

46

45

 
1 This is an optional feature.
2 FLA is Full Load Ampere; the maximum full load current value of the air conditioner is not the sum of rated maximum full load current of all components. It is the sum of rated maximum full load current value of the operating components, which may operate at the same time on the maximum work load condition.
 

Technical Specifications

Extreme Power Extreme Heat

Flexible approaches for high density cooling.

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