Vertiv Liebert Mini-Mate2 - Close Coupled Installations; Evaporator Air Distribution

Attach the threaded rods to the unit flanges using the supplied nuts and grommets (see Figure 7.6 on
page36). 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.
7.4.1 Close 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 7.8 on page39). 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 Piping Connections and Coolant Requirements
on the next page.
7.4.2 Evaporator 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.
Connections for Ducted Systems
Use flexible duct work or non-flammable cloth collars to attach duct work to the unit and to help control
the transmission of vibrations to building structures. Insulation of duct work is vital to prevent
condensation during the cooling cycle. The use of a vapor barrier is required to prevent absorption of
moisture from the surrounding air into the insulation.
If the return air duct is short or if noise is likely to be a problem, sound-absorbing insulation should be
used inside the duct. Duct work should be fabricated and installed in accordance with national and local
codes.
Vertiv | Liebert Mini-Mate2—5 ton User Manual| 29