JOHNSON CONTROLS
31
SECTION 2 - PRODUCT DESCRIPTION
FORM 201.23-NM2
ISSUE DATE: 3/9/2015
2
tion the unit can operate at normal speed during the
day, when background noise levels are noticeable, and
at low speed in the evening and at night when back-
ground levels are lower.
(Factory-mounted)
SilentNight™
Standard variable speed compressors result in a chiller
system that has lower part load sound values than con-
ventional air-cooled chillers. Over 99% of chiller op-
erating hours occur when building loads are less than
design and/or ambient temperatures are less than de-
sign. As a result, all YCIV model chillers will operate
with less than full load sound output nearly all the time.
This is especially important on evenings and weekends
when neighbors are home the most. Due to time of day
based sound regulations it may be desirable to force
the chiller to a lower sound level on demand. The Si-
lentNight™ control option provides a control input to
limit sound output of the chiller based on time of day.
This feature is programmable at the chiller panel or can
be controlled remotely via signal (4 to 20mA or 0 to10
VDC) from a BAS system.
High Static Fans - (400V/50Hz and 380V/60Hz)
Condenser fans with higher power motors suitable for
high external static pressure, up to 100Pa (0.4 in. wa-
ter), across condenser coils. Select this option if ad-
ditional air-flow resistance may be present due to flow
restrictions such as field installed ducts, filters, sound-
enclosures etc.
(Factory-mounted)
High Airflow Fans - (400V/50Hz and
380V/60Hz)
Condenser fans with airfoil type blades and high power
motors providing extra airflow across coils. In some
chiller configurations, this option can provide an in-
crease in chiller capacity. Contact your local Johnson
Controls representative for more information.
(Facto-
ry-mounted)
Condenser Coil Protection
Standard condenser coil construction materials include
aluminum fins, copper tubes, and galvanized tube sup-
ports for generally good corrosion resistance. However,
these materials are not adequate for all environments.
The system designer can take steps to inhibit coil cor-
rosion in harsh applications and enhance equipment
life by choosing from these options based on project
design parameters and related environmental factors.
(Factory-mounted)
Pre-Coated Fin Condenser Coils
The air-cooled condenser coils are constructed of ep-
oxy-coated aluminum fins. This can provide corrosion
resistance comparable to copper-fin coils in typical
seashore locations. Either these or the post coated coils
(below), are recommended for units being installed at
the seashore or where salt spray may hit the unit.
Post-Coated Epoxy Dipped Condenser Coils
The unit is built with dipped-cured epoxy condenser
coils. This is another choice for seashore and other cor-
rosive applications (with the exception of strong alka-
lis, oxidizers and wet bromine, chlorine and fluorine in
concentrations greater than 100 ppm).
Copper Fin Condenser Coils
The unit constructed with copper tube condenser coils,
which have copper fins. (This is not recommended for
units in areas where they may be exposed to acid rain.)
Protective Chiller Panels
Wire Panels (Full Unit)
UV stabilized black polyvinyl chloride coated, heavy
gauge, welded wire mesh guards mounted on the exteri-
or of the unit. Protects condenser coil faces and prevents
unauthorized access to refrigerant components (com-
pressors, pipes, cooler, etc.), yet provides free air flow.
This can cut installation cost by eliminating the need for
separate, expensive fencing.
(Factory-mounted)
Louvered Panels (Condenser Coils Only)
Louvered panels, painted the same color as the unit,
are mounted over the exterior condenser coil faces on
the sides of the unit to visually screen and protect coils.
(Factory-mounted)
Louvered Panels (Full Unit)
Louvered panels, painted the same color as the unit,
enclose the unit to protect condenser coils from inci-
dental damage, visually screen internal components,
and prevent unauthorized access to internal compo-
nents.
(Factory-mounted)
Louvered (Condensers)/Wire Panels
(Mechanical)
Louvered panels, painted the same color as the unit,
are mounted on external condenser coil faces. Heavy
gauge, welded wire-mesh, coated to resist corrosion,
around base of machine to restrict unauthorized access.
(Factory-mounted)
Summary of Contents for YCIV0157
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