Liebert Mini-Mate2, 8 Ton - Emerson Network Power
Liebert Mini-Mate2, 8 Ton - Emerson Network Power
Liebert Mini-Mate2, 8 Ton - Emerson Network Power
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2.7 Indoor Water- and Glycol-Cooled Condensing Unit Installation<br />
2.7.1 Location Considerations<br />
27<br />
Site Preparation and Installation<br />
The condensing unit may be located above the dropped ceiling or any remote indoor area. If noise is of<br />
concern, the condensing unit should be located away from personnel. Normal operating sound may be<br />
objectionable if the condensing unit is placed near quiet work areas.<br />
To mount the unit in the ceiling, refer to 2.4 - Installing the Evaporator or Chilled-Water Units.<br />
2.7.2 Piping Connections<br />
Details for Refrigerant (R-22) Loop piping are in 2.4.3 - Piping Connections and Coolant<br />
Requirements.<br />
Water/Glycol Piping Considerations<br />
Refer to Figure 20 for recommended field installed piping hardware such as shut-off valves and hosebibs.<br />
Water filters should be installed if water quality is poor. Filters will extend the service life and<br />
efficiency of the condensers.<br />
Condensing Unit Fluid Requirements<br />
The maximum fluid pressure is 150 psi standard pressure or 350 psi for high pressure units (Refer to<br />
unit serial tag and model number description page at beginning of this manual).<br />
NOTE<br />
HVAC grade ethylene or propylene glycol should be used on glycol systems.<br />
Automotive antifreeze must not be used.<br />
Regulating Valve<br />
Water/Glycol-cooled units include a coolant flow regulating valve which is factory adjusted and should<br />
not need field adjustment.<br />
Standard water pressure and high water pressure valves are adjusted differently. Contact <strong>Liebert</strong><br />
Service before making any adjustments.<br />
2.7.3 Electrical Connections<br />
Refer to 2.4.4 - Electrical Connections, Evaporator or Chilled-Water Unit for general wiring<br />
requirements and cautions. Refer to electrical schematic when making connections. Refer to serial tag<br />
for full load amp and wire size amp ratings.<br />
Control Connections<br />
A six-wire control connection is required from the evaporator unit to the water/glycol condensing unit.<br />
Two (2) additional wires are required when hot gas bypass is ordered. Glycol-cooled units also<br />
require a two-wire control connection to the drycooler and pump package.