Emerson MINI-MATE2 5.3Equipment Inspection Upon Receipt, 5.4Installing the Ceiling Units

Site Preparation and Installation

5.3Equipment Inspection Upon Receipt

When the unit arrives, do not uncrate equipment until it is close to its final location. All required assemblies are banded and shipped in corrugated containers. If you discover any damage when you uncrate the unit, report it to the shipper immediately. If you later find any concealed damage, report it to the shipper and to your Liebert supplier.

5.4Installing the Ceiling Units

! WARNING

Risk of ceiling collapse and heavy unit falling. Can cause building damage, serious injury or death.

Verify that the supporting roof structure is capable of supporting the weight of the unit(s) and the accessories during installation and service. (See 5.2 - Ceiling Unit Weights.)

Securely anchor the top ends of the suspension rods and verify that all nuts are tight.

The evaporator unit and indoor condensing unit are usually mounted above the ceiling and must be securely mounted to the roof structure. The ceiling and ceiling supports of existing buildings may require reinforcements. Be sure to follow all applicable national and local building codes. Use field-supplied threaded suspension rods and 3/8"–16 factory hardware kit.

Recommended clearance between ceiling grids and building structural members is unit height plus three inches (76.2mm).

Install the four field-supplied rods by suspending them from suitable building structural members. Locate the rods so that they will align with the four mounting holes in the flanges that are part of the unit base.

Using a suitable lifting device that is rated for the weight of the unit (see 5.2 - Ceiling Unit Weights), raise the unit up and pass the threaded rods through the four mounting holes in the flanges that are part of the unit base.

Attach the threaded rods to the unit flanges using the supplied nuts and grommets (see Figure 13). The rubber grommets provide vibration isolation.

1.Use the plain nuts to hold unit in place. Adjust these nuts so that the weight of the unit is supported evenly by the four rods, does not rest on the ceiling grid and is level.

NOTE

The units must be level in order to drain condensate properly.

2. Use the Nylock nuts to “jam” the plain nuts.

5.4.1Close Coupled Installations

If the evaporator and condensing units are to be mounted side-to-side (close coupled), hang each unit before connecting them together (see Figure 15). Align bolt holes in the condensing unit and in the evaporator. Insert rubber spacers and secure four (4) sets of hardware provided. Align the refrigerant connections and tighten them as described in 5.4.3 - Piping Connections and Coolant Requirements.

5.4.2Evaporator Air Distribution Filter Box

The optional filter box mounts directly to the return air opening of the evaporator. The filter box is supplied with 1" (25.4mm) duct flange connection, quantity two, 20" x 20" x 4" nominal

(508mm x 508mm x 102mm) filters and a 1" (25.4 mm) duct flange for use on the supply air opening. Filters are MERV 8 efficiency per ASHRAE Standard 52.2-2007.

NOTE

Do not operate the unit without filters installed in return air system.

17 Liebert® Mini-Mate2™