Vertiv Liebert MC series Installer/User Manual Download

Page: 15 / 94

3 PRE-INSTALLATION PREPARATION AND GUIDELINES

The unit dimensions, pipe connection locations, and piping schematics are described in the submittal documents included
in the

Submittal Drawings

on page 87.

•

Install the condenser in a location offering maximum security and access for maintenance.

•

Avoid ground level sites with public access and areas prone to heavy snow or ice accumulations.

•

To ensure adequate air supply, we recommend that condensers be installed in an area with clean air, away from
loose dirt and foreign matter that might clog the coil. In addition, condensers should be located no closer than
3 ft. (1 m) from a wall, obstruction, or adjacent unit.

•

For roof installation, mount the condenser on suitable curbs or other supports in accordance with local codes.

•

Locations that require additional coil corrosion protection, such as coastal regions, heavy industrial, or
agricultural air pollution, should specify coils with the optional epoxy E-coat.

•

Condensers must not be installed in a pit.

•

Condensers must be installed on a level surface to ensure proper refrigerant flow.

•

Condensers must be installed in vertical airflow orientation to maintain the electrical box’s NEMA 3R rating.

Condenser with Receiver

•

Cannot be installed below the evaporator

•

EEV units: The outlet of the receiver on the outdoor, MC condenser must be higher than the elevation of the
electronic expansion valves (EEV) inside the indoor unit The vertical height of the receiver outlet must not
exceed 60 ft. (18.3 m) above the EEV.

•

TXV units: The bottom of the receiver on the outdoor MC condenser must be higher than the elevation of the
thermal expansion valves (TXV) inside the indoor unit. The vertical height of the bottom of the receiver must
not exceed 60 ft. (18.3 m) above the TXV.

•

·Consult factory before installing units, condensers, and receivers outside these parameters.

•

Refer to DPN003954, DPN003993, and DPN003994 included in

Submittal Drawings

on page 87

•

Receiver tanks should be mounted on the condenser legs for proper operation. Contact Vertiv's Application
Engineering Department for assistance with applications requiring remote mounting of receivers.

Condenser without Receiver

•

The bottom of the condenser coil must be less than 15 ft. below the location of the TXV inside the indoor unit.

•

The vertical height of the bottom of the condenser coil must not exceed 60 ft. (18.3 m) above the TXV inside
the indoor unit.

•

Consult factory before installing units and condensers outside these parameters.

•

Refer to DPN003954 included in

Submittal Drawings

on page 87

3.1 Planning Dimensions

The condenser dimensions are described in the submittal documents included in the

Submittal Drawings

on page 87.

Condensers mounted above and below the relative elevation of the indoor unit must follow the guidelines found in the
submittal drawings listed in the table.

The following table lists the relevant documents by number and title.

3 Pre-installation Preparation and Guidelines