AAON SA-070 - Manual (Page 29)

29
Refrigerant-to-Water Heat Exchanger
Condenser water pump, condenser water
piping, cooling tower, pressure gauges,
strainers,
piping insulation and all
components of the waterside piping must be
field installed.
Open Loop Applications
This product contains one or more
refrigerant-to-water heat exchangers made
of 316 Stainless Steel. 316 Stainless Steel is
subject to severe corrosion and failure when
exposed to chlorides.
Do not allow water containing any form of
chlorides to enter this heat exchanger.
Common forms of chlorides include:
1. Sea water mist entering an open cooling
tower system.
2. Contaminated make-up water containing
salt water.
3. Disinfection the water loop with solutions
containing sodium hypochlorite.
Chlorides will result in a premature failure
of the condenser.
Failure of the condenser as a result of
chemical corrosion is excluded from
coverage under AAON warranties and the
heat exchanger manufacturer warranties.
Failure of the condenser 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 condenser failure from
chemical corrosion due the fluid in the
condenser is excluded from coverage under
AAON warranties and the heat exchanger
manufacturer warranties.
Freezing Water in the Heat Exchanger
This product contains one or more
refrigerant-to-water heat exchangers. A
refrigerant-to-water heat exchanger contains
refrigerant in one passage and water in
another passage. Water is subject to freezing
OPEN LOOP APPLICATIONS
Failure of the condenser as a result
of chemical corrosion is excluded
from coverage under AAON Inc.
warranties and the heat exchanger
manufacturer’s warranties.
WARNING
Cleaning the cooling tower or
condenser water loop with harsh
chemicals such as hydrochloric acid
(muriatic acid), chlorine or other
chlorides,
can damage the
refrigerant-to-water heat exchanger.
Care should be taken to avoid
allowing chemicals to enter the
refrigerant-to-water heat exchanger.
See Appendix A - Heat Exchanger
Corrosion
Resistance for more
information.
CAUTION
OPEN LOOP APPLICATIONS
SMO 254 brazed plated refrigerant-
to-water
heat exchangers are
recommended with all open loop
applications. Failure to use a SMO
254 heat exchanger may result in
premature failure of your system and
possible voiding of the warranty.
WARNING