Data Aire DAMA-01, Инструкция по установке, эксплуатации и обслуживанию

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GLYCOL SYSTEMS
Glycol Concentration
The system must be filled with water and the appropriate amount of glycol (either ethylene or propylene)
to protect against winter freeze-up. To achieve the approximate glycol concentration, it is necessary to
know the total system volume. This consists of the sum of the fluid cooler volume, the evaporator unit
volume and the volume of the interconnecting piping.
The following tables can be used for arriving at an approximate system volume. After installation,
the glycol percentage should be checked. The glycol percentage should also be checked at regular
intervals to ensure freeze protection.
Internal (Fluid) Volume
Table 23 Mini Ceiling Unit Internal (Fluid) Volume
Evaporator Model
Standard Unit Volume
Gallons (Liters)
DAMA-01XX 1.0 (3.8)
DAMA-1.5XX 1.0 (3.8)
DAMA-02XX 2.5 (9.5)
DAMA-2.5XX 2.5 (9.5)
Fluid Cooler Internal Volume
The Fluid cooler has a separate Installation, Operation and Maintenance Manuals which should be
referred to for more complete details regarding remote heat exchangers.
Brazed-Plate Fin Condensers
Data Aire water cooled units use brazed-plate condensers as a standard. Brazed-plate condensers
are constructed of plates brazed together to form an assembly of separate channels. Refrigerant is
confined to the space between the welded plates and is exposed to gaskets only at the ports. Such
condensers have a higher range of capacity.
The stainless-steel plates are configured with a wave pattern, which results in high turbulence and low
susceptibility to fouling. Because of the compact design, these condensers require a low refrigerant
charge. The construction of brazed units does not allow mechanical cleaning, and internal leaks usually
cannot be repaired. Thus, it is recommended to use closed-loop cooling systems with good filtration or
separators to keep the water clean.
NOTICE: Data Aire does not have experience of in-depth knowledge in the
field of water treatment and therefore only provides the following information
as a general reference. To properly maintain your water system, please
consult a water treatment expert.