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GLYCOL SOLUTIONS
The use of glycol can affect system performance depending on
its concentration and should be taken into account during initial
system design. When glycol is added to the chilled water system
to protect against freezing, it should be noted that the refrigerant
suction pressure will be lower, the cooling performance will
be lower and the water side pressure drop will be higher. The
reduction in performance depends on the glycol concentration
and temperature. Test the coolant with a clean and accurate
glycol refractometer to determine the freezing point.
!
CAUTION
The installed glycol level must match the nominal glycol
percentage indicated on the submitted chiller technical data
sheet. Failure to meet the nominal glycol percentage may
result in damage to the unit and loss of unit warranty.
Do not use automotive grade antifreeze. Industrial grade glycols should be used. Automotive antifreeze contains inhibitors that will
cause plaque formation on the copper tubes of the cooler evaporator. The type and handling of the glycol used should be consistent
with local codes.
Table 3. Coil and coating selection matrix.
Coil Option
Non-corrosive¹
Standard
Microchannel
Epoxy
Coated coils
Notes:
1. Non-corrosive environments can be estimated by the appearance of existing equipment in the immediate area where the
chiller is to be placed.
2. Marine environments should take into account the proximity to the coast, as well as the prevailing wind direction.
3. Industrial contaminants can be general or localized, depending on the immediate source of contamination (e.g. diesel
fumes due to proximity to a loading dock).
4. The marine-industrial combination is influenced by proximity to the coast, prevailing winds, and general and localized
sources of pollution.
iom-cliv-cf-eng
Installation and Application Information
!
!
CAUTION
Unpolluted marine².
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12
CONDENSER COIL OPTIONS AND COATING
Considerations
The standard CLIV Series chiller coils have an aluminum alloy
microchannel design with a series of flat tubes containing
multiple parallel flow microchannels placed between the coolant
manifolds. The microchannel coils are designed to withstand the
synthetic acidified seawater acidified (SWAAT) mist test of over
1000 hours (ASTM G85-02) at 120°F (49°C) with 0% loss and
without developing leaks.
Epoxy coating: is an extremely flexible and durable water-based
polymer coating that is uniformly applied to all coil surfaces by
a multi-step electrostatic submerged coating process. Epoxy-
coated coils offer ASTM B117-90 salt spray resistance of more
than 10,000 hours, applied to both the coil and the coil heads.
Epoxy-coated coils also receive a UV-resistant urethane topcoat
to provide superior resistance to degradation from direct sunlight.
!
Industrial³
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Combined marine-industrial⁴.
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www.clima-flex.com
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