Jetson FWCD Series, Installation Operation & Maintenance, Page: 58 / 96

Jetson
www.JetsonHVAC.com
58
Water Treatment
CAUTION
Proper Water Treatment!
The use of untreated or improperly treated
water could result in scaling, erosion,
corrosion,
algae or slime. It is
recommended that the services of a
qualified water treatment specialist be
engaged
to determine what water
treatment, if any, is required. Jetson
assumes no responsibility for equipment
failures which result from untreated or
improperly treated water, or saline or
brackish water.
Using untreated or improperly treated water in
these units may result in inefficient operation and
possible heat exchanger damage. Consult a
qualified water treatment specialist to determine if
treatment is needed. See Appendix for water
treatment requirements.
Evaporator and Water Piping
CAUTION
Water Born Debris!
To prevent evaporator or condenser damage,
pipe strainers must be installed in the water
supplies to protect components from waterborne
debris. Jetson is not responsible for equipment-
only-damage caused by water born debris.
Failure to install the shipped-loose supplied Y-
strainers or screens will void the warranty on the
brazed plate evaporator and condenser.
FWCD chillers are equipped with brazed plate
heat exchangers made of stamped stainless-steel
plates, furnace brazed together with copper-based
joints. Because of the small complex geometry of
the flow passages, it is imperative customers take
all precautions to ensure these evaporators are not
fouled by large particles or mineral deposits.
Chillers must have a factory provided, or field
provided, 20-mesh evaporator inlet wye strainer
that must be field installed. The screen may be
removed for cleaning. Operation of chiller without
screen in place will void warranty. Chemical
treatment of the chilled water loop is required and
must be performed by a qualified water treatment
specialist.
Chilled water inlets and outlets are grooved-type
with the locations provided in Dimension and
Weights chapter. Under full-load standard AHRI
conditions, the chilled water temperature change
should be approximately 10°F, producing a flow
rate in the range of 2.4 gpm/ton. Minimum outlet
water is 42°F, with standard evaporator and
without freeze inhibitor. Minimum outlet water
temperature is 40° F with high-capacity
evaporator and without freeze inhibitor.
Chilled water piping must be in accordance with
all local, state and national codes.