Trane RTAF HE Series, Установка, эксплуатация и обслуживание

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RLC-SVX19A-E4 21
Chilled Water Piping Recommendations
Drainage
A large capacity drain must be provided for water vessel
drain-down during shutdown or repair. The evaporator is
provided with drain connections. An air vent on top of the
evaporator water box prevents vacuum by removing air
from evaporator for complete drainage.
Water Treatment
In the evaporator following material are in contact with
water:
• Water boxes are made of cast iron (GJL250 EN-code)
• Tube plates are made of iron (P265GH code)
• Tubes are made of copper
When the unit is supplied with hydraulic module, the
following materials are in contact with water:
• Water boxes are made of cast iron (GJL250 EN-code)
• Tube plates are made of iron (P265GH code)
• Tubes are made of copper
• Pump frame and connections are made of cast iron
• Tubes are made of iron
• Sealings are made of EPDM rubber (ethylene propylene
diene monomer rubber)
• Pump sealings are made of silicon carbide
• Strainer is made of stainless steel
Dirt, scale, products of corrosion, and other foreign
material will adversely affect heat transfer between the
water and system components. Foreign matter in the
chilled-water system can also increase pressure drop and
consequently, reduce water fl ow. Proper water treatment
must be determined locally, depending on the type of
system and local water characteristics.
Neither salt nor brackish water is recommended for use
in Trane air-cooled chillers. Use of either will lead to an
unpredictably shorter life cycle. Trane encourages the
employment of a reputable water treatment specialist,
familiar with local water conditions, to assist in this
determination and in the establishment of a proper water
treatment program.
CAUTION!
If using an acidic commercial fl ushing
solution, construct a temporary bypass around the
unit to prevent damage to internal components of
the evaporator. Trane assumes no responsibility for
equipment failures which results from untreated or
improperly treated water or saline or brackish water.
If calcium chloride is used for water treatment, an
applicable corrosion inhibitor must also be used. Failure
to do so may result in damage to system components. Do
not use untreated or improperly treated water. Equipment
damage may occur.