Vertiv Liebert DM Series User Manual

Vertiv™ | Liebert® DM | User Manual 12
Overview
1.5.5. Energy-saving Card
Vertiv™ Liebert® DM can monitor the maximum room temperature with the energy-saving card. The card is located outside
the unit cabinet such that it can accurately measure high heat load and temperature of the unit. Up to four cards can be
configured in the unit.
When the ‘Sleep Mode’ is set to ‘ENAB’ and only indoor fan is running, and if all the energy-saving cards sense the
temperature of the unit is lower than the ‘Sleep Mode’ setpoint temperature then the unit turns o the indoor fan and enters
into the Sleep Mode to save energy.
1.5.6. Power SPD
The power SPD is used for surge over-voltage protection in second level (C-level) single-phase (or three-phase) AC power
supply. It provides status indication and alarm function of the unit.
The humidifier, electrical heater and power SPD should be installed in factory.
1.5.7. Floor Leak Detection Sensor
Liebert® DM series can be supplied with an optional single floor leak detector (a point leak sensor); when the ‘Floor Leak
Detector sensor’ detects water under floor, it sends a signal to the controller and then controller triggers the alarm.
1.5.8. Installation Accessories
The Liebert DM 07 kW, 12 kW and 17 kW units can be supplied with installation accessories according to user’s requirements.
See Table 1-3 for details.
Table 1-3 Installation Accessories (Liebert DM 07 kW, 12 kW and 17 kW)
Name Specifications Remark
07 kW
Discharge pipe 1/2”″(12.7 mm) copper pipe 5.0 m optional
Liquid pipe 3/8”″(9.52 mm) copper pipe 5.0 m optional
12 kW / 17 kW
Discharge pipe 5/8”″(16 mm) copper pipe 5.0 m optional
Liquid pipe 1/2”″(12.7 mm) copper pipe 5.0 m optional
Outdoor unit power supply cable (3*0.75 mm
2
) 8.0 m optional
Indoor unit power supply cable (5*4 mm
2
) 7.0 m optional
The Liebert DM 22 kW and 27 kW units can be supplied with installation accessories according to user’s requirements.
See Table 1-4 for details.
Table 1-4 Installation Accessories (Liebert DM 22 kW and 27 kW)
Name Specifications Remark
Discharge pipe 3/4” (19 mm) copper pipe 7.5 m optional
Liquid pipe 5/8” (16 mm) copper pipe 7.5 m optional
Outdoor unit power supply cable 16 AWG (1.5 mm
2
) 9.0 m optional
Outdoor unit signal cable 20 AWG (0.5 mm
2
) 9.0 m optional
Indoor unit power supply cable 10 AWG (6 mm
2
) 9.0 m optional

Vertiv Liebert DM Series Specifications

General

Brand	Vertiv
Model	Liebert DM Series
Category	Air Conditioner
Language	English