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Do not allow water containing any form of
chlorides to enter this heat exchanger.
Common forms of chlorides include:
1. Seawater mist entering an open cooling
tower system.
2. Contaminated make-up water containing
salt water.
3. Water loop systems that have been
disinfected.
Chlorides will result in a premature failure
of the refrigerant-to-water heat exchanger.
Failure of the refrigerant-to-water heat
exchanger as a result of chemical corrosion
is excluded from coverage under AAON
warranties and the heat exchanger
manufacturer warranties.
Failure of the refrigerant-to-water heat
exchanger may allow water to enter the
refrigerant circuit and may cause extensive
damage to the refrigerant circuit
components. Any damage to the equipment
as a result of refrigerant-to-water heat
exchanger failure from chemical corrosion
due to the fluid in the refrigerant-to-water
heat exchanger is excluded from coverage
under AAON warranties and the heat
exchanger manufacturer warranties.
Freezing Water in the Heat Exchanger
This product contains one refrigerant-to-
water heat exchanger. A refrigerant-to-water
heat exchanger contains refrigerant in one
passage and water in another passage. Water
is subject to freezing at 32°F. When water
freezes in a heat exchanger significant forces
are exerted on the components of the heat
exchanger where the water is confined.
Failure of the refrigerant-to-water heat
exchanger due to freezing will allow water
to enter the refrigerant circuit and will cause
extensive damage to the refrigerant circuit
components. Any damage to the equipment
as a result of water freezing in the
refrigerant-to-water heat exchanger is
excluded from coverage under AAON
OPEN LOOP APPLICATIONS
Failure of the refrigerant-to-water
heat exchanger
chemical corrosion is excluded from
coverage under AAON Inc.
warranties and the heat exchanger
manufacturer’s warranties.
OPEN LOOP APPLICATIONS
Cupronickel refrigerant-to-water heat
exchangers must be used with all
open loop applications. Failure to use
a Cupronickel heat exchanger may
result in premature failure of your
system and possible voiding of the
warranty.
Cleaning the cooling tower or water
loop with harsh chemicals such as
hydrochloric acid (muriatic acid),
chlorine or other chlorides, can
damage the refrigerant-to-water heat
exchanger. Care must be taken to
avoid allowing chemicals to enter the
refrigerant-to-
See Appendix A -
Corrosion R
information.
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