Specifications

17
JOHNSON CONTROLS
Form 201.28-NM1.EN.PED/CE (0211)
2
Extreme Conditions - During extreme or unusual
conditions (i.e. blocked condenser coils, ambient above
scheduled maximum, etc.) the chiller control system
will avoid shutdown by varying capacity. By monitoring
motor current and suction and discharge pressures, the
chiller can maintain maximum available cooling output
without shutting down.
Unit Safeties are provided for the chiller to perform auto-
reset shut down for the following conditions:
• Ambient temperature above or below allowable
range
• Out of range leaving chilled liquid temperature
• Under voltage
• Flow switch operation
ACCESSORIES AND OPTIONS
All options factory mounted unless otherwise noted.
SOUND ATTENUATION
LOW NOISE KITS – The standard chiller configuration
is equipped with low sound fans and acoustic treatments
on the refrig erant lines and compressors. There are
several sound attenuation options available to further
reduce sound at its source thereby meeting local sound
level regulations.
SilentNight™ - Due to time of day based sound
regulations in some locations it may be desirable to
force the chiller to a lower sound level on demand. The
SilentNight 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 a signal (4-20 mA or 0-10
VDC) from a BAS system.
FAN OPTIONS
ULTRA QUIET FANS – The chiller is equipped with
specially designed fans and motors to provide lower
sound levels yet retain appropriate airflow. The result is
reduced fan generated sound with minimal effect on the
chiller capacity or efficiency.
HIGH STATIC FANS - The chiller is equipped with
condenser fans with higher power motors suitable for
high external static pressure, up to 100 Pa (0.4 in. water),
across condenser coils. This option should be selected
if additional airflow resistance may be present due to
flow restrictions such as field installed ducts, filters,
sound enclosures etc. Please contact your local JCI
representative for more information.
HIGH AIRFLOW FANS - The chiller is equipped
with condenser fans with airfoil type blades and high
power motors providing extra airflow across coils. In
some chiller configurations, this option can provide an
increase in chiller capacity at high ambient. The high
airflow fans are also available with variable speed
control. Please contact your local JCI representative for
more information.
CONDENSER COIL PROTECTION
The aluminium alloys used in the YVAA micro-channel
condenser have been carefully selected and tested for
high corrosion resistance. However, all metals can
corrode in harsh conditions. Consider protecting coils
from corrosive environments such as coastal, marine,
urban and industrial.
POST-COATED EPOXY DIPPED CONDENSER
– Micro-channel condenser coils applied with electro-
deposited and baked flexible epoxy coating that is
finished with a polyurethane UV resistant top-coat
suitable for highly corrosive applications.
PROTECTIVE CHILLER PANELS
WIRE PANELS – UV stabilized black polyvinyl chloride
coated, heavy gauge, welded wire mesh guards mounted
on the exterior of the full unit. Protects condenser coil
faces and prevents unauthorized access to refrigerant
components (compressors, pipes, evaporator, etc.), yet
provides free air flow. This can cut installation cost by
eliminating the need for separate, expensive fencing.
LOUVERED PANELS – Louvered panels, painted the
same colour as the unit, enclose the unit to visually screen
and protect the coils as well as preventing unauthorized
access to internal components. Also available as a
condenser-only option.
LOUVERED/WIRE PANELS COMBINATION -
Louvered panels, painted the same colour as the unit, are
mounted on external condenser coil faces. Heavy gauge,
welded wire-mesh panels, coated to resist corrosion, are
mounted around base of machine to restrict unauthorized
access.
END HAIL GUARD – Louvered panels, painted the
same colour as the unit, are installed on the rear of the
unit (opposite end of the control panel) to protect the
exposed condenser from flying debris or hail.
V-GUARD PANELS – Solid panels, painted the same
colour as the unit, are installed along the sides of the units
to cover exposed piping within the condenser section
without impacting airflow. These guard panels can be
combined with End Hail Guard option for additional
protection from debris.