Waterborne Debris!
To prevent 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.
Condenser piping components and layout vary
depending on the water source and connection
locations, however a means of maintaining stable
discharge pressure through full-, part-load, and
transient conditions is required. Saturated
discharge temperature must be maintained
between 80°F and 145°F. Jetson offers an
optional factory installed water regulating valve
that is controlled by unit controller. The optional
water regulating valve maintains condensing
pressure and temperature by throttling water
flow leaving the condenser in response to
compressor discharge pressure. Field supplied
water regulating valves must be adjusted for
proper operation during start-up. Under full load
“standard AHRI conditions” the water
temperature rise should be 10° F, producing a
flow rate in the range of 3 gpm per ton. Minimum
inlet condenser water temperature is 65°F.
Condenser piping must be in accordance with all
local and national codes. Condenser piping
components generally function identically to
those in the evaporator piping system. In
addition, cooling tower systems may include a
manual or automatic bypass valve that can alter
water flow rate to maintain condensing pressure.
Well (city) water condensing systems should
include a pressure reducing valve and water
regulating valve. A pressure reducing valve
should be installed to reduce water pressure
entering the condenser. This is required only if
water pressure exceeds nameplate maximums.
This is also necessary to prevent damage to the
disc and seat of the water regulating valve that
can be caused by excessive pressure drop
through the valve.
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General