Liebert Mini-Mate2, 8 Ton - Emerson Network Power
Liebert Mini-Mate2, 8 Ton - Emerson Network Power
Liebert Mini-Mate2, 8 Ton - Emerson Network Power
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
2.8 Optional Equipment Piping<br />
2.8.1 Free-Cooling Coil (GLYCOOL)<br />
31<br />
Site Preparation and Installation<br />
The free-cooling coil is a secondary coil located upstream of the DX coil. To take maximum advantage<br />
of available free-cooling, the secondary coil may operate at the same time as the DX coil. A temperature<br />
sensor is factory-mounted to the free-cooling piping. When fluid temperature is sufficiently below<br />
the room temperature, cooling is provided by circulating the fluid through the secondary cooling coil<br />
(flow is controlled by a motorized valve). Compressors are staged on if needed to supplement the freecooling.<br />
To keep deposits from building up in the free-cooling coil, the coil is flushed periodically.<br />
NOTE<br />
If the free-cooling coil is piped to an open water tower, a CU/NI (cupro-nickel) type coil must<br />
be ordered to prevent corrosion of the copper tubes; or a heat exchanger must separate the<br />
tower water from the free-cooling loop.<br />
On water-cooled systems, the free-cooling coil outlet can be field piped to the condensing unit inlet,<br />
provided a 3-way regulating valve has been installed within the water/glycol condensing unit (see<br />
Figure 21).<br />
Figure 21 Optional free cooling coil (3-way valve) on water/glycol units<br />
SL-11088Pg12
Change language