Vertiv™ | Liebert® DM | User Manual 13
Overview
1.6. Environmental Conditions Requirements
1.6.1. Operating Environment Requirements
The operating environment requirements for Liebert® DM are given in Table 1-5.
Table 1-5 Operating Environment Requirements
Item Requirements
Installation position
The maximum equivalent horizontal distance between indoor and outdoor units
[1]
: 50 m;
Vertical distance ΔH
[2]
: -5 m ≤ ΔH ≤ 20 m
Installation orientation
and mounting base
requirement
Indoor unit: vertical mode only;
Floor stand for upflow unit ≥ 150 mm;
Floor stand for downflow unit ≥ 450 mm;
Outdoor unit: 07 kW/12 kW/17 kW—Only vertical mode″22 kW/27 kW—horizontal or vertical mode
Ambient temperature
Indoor: 18 °C to 32 °C; Outdoor: -15 °C to +45 °C(standard model) / -34 °C to +45 °C
(low-temperature components model)
[3]
Ambient humidity Indoor: 30% RH to 80% RH
Protection level Outdoor unit: IPX4
Altitude < 1000 m, derating is required when location altitude is above 1000 m
Operation voltage
range
400 V, 3 Ph, 50 Hz (±3%)
1. For the equivalent lengths of components, refer to Section 2.6.
2. The value of ΔH is positive, if the outdoor unit is installed above the indoor unit; ΔH is negative, if the indoor
unit is installed above the outdoor unit.
3. In case of any non-standard design application for example, if outdoor environment temperature is below
-15 °C, then consult Vertiv representative.
4. If you need to operate the service valve (outdoor) below -20 °C ambient temperature, then consult Vertiv
representative for guidance.
5. The power supply of 380 V to 415 V, 3 Ph, 60 Hz option is available on request, contact Vertiv
representative for details.
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