Vertiv™ | Liebert® AHU | User Manual 11
Note1: It is recommended that the site preparation is defined as per the requirements. However, if these requirements are
not met, Vertiv recommends that rectifications be made on the site so that it complies with the specified requirements
and conditions.
Note2: However, if the rectifications or modifications are not implemented, then Vertiv does not guarantee the accuracy
and precision of the temperature and humidity provided by the AHU model.
2.2.2. Installation Space Requirements
Adequate installation space must be provided for the indoor unit. The unit of the AHU product must be installed on the
floor of the Equipment Room or Computer Room.
• Do not use the indoor unit in the open and severe outdoor environment.
• Avoid locating the indoor unit in concave or narrow areas, which can obstruct the airflow, shorten the
cooling cycle and result in air return short cycle and air noise.
• Do not install the unit within the vicinity of any other precision cooling equipment to prevent the leak-
age of condensed water produced due to imbalance load condition.
• Do not install other devices (such as a smoke detector) over the indoor cabinet.
2.2.3. Maintenance Space Requirements
When installing the unit, a minimum maintenance space of 1100 mm must be reserved in front of the air conditioning unit.
Refer Table 2-1 for maintenance spaces of both types of unit models.
Figure 2-4 Maintenance Space of Unit for Air-cooled Unit
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