Specifications

JOHNSON CONTROLS
16
FORM 150.72-NM1 (908)
Product Description
The evaporator is constructed, tested and stamped in
accordance with applicable sections of ASME pressure
vessel code for minimum 450 PSIG (3103 kPa)
refrigerant side design working pressure and 150 PSIG
(1034 kPa) water side design working pressure
A strainer with a mesh size between .5 and 1.5 mm (40
mesh) is recommended upstream of the heat exchanger
to prevent clogging from water system debris.
Condenser
Coils – Condenser coils are Microchannel type and made
of a single material to avoid galvanic corrosion due to
dissimilar metals. Coils and headers are brazed as one
piece. Integral sub cooling is included. The design
working pressure of the coil is 650 PSIG (45 bar).
Fans – The condenser fans are composed of corrosion
resistant aluminum hub and glass-fiber reinforced
polypropylene composite blades molded into a low
noise airfoil section. They are designed for maximum
efciency and are statically and dynamically balanced
for vibration free operation. They are directly driven
by independent motors, and positioned for vertical air
discharge. The fan guards are constructed of heavy
gauge, rust resistant, coated steel. All blades are
statically and dynamically balanced for vibration free
operation.
Motors – The fan motors are Totally Enclosed Air-Over,
squirrel cage type, current protected. They feature
ball bearings that are double sealed and permanently
lubricated.
Ambient Kit (High) – Required if units are to operate
when the ambient temperature is above 115°F (46°C).
Includes discharge pressure transducers.
MILLENIUM CONTROL CENTER
All controls are contained in a NEMA 3R/12 cabinet
with hinged outer door and include:
Liquid Crystal Display with Light Emitting Diode
backlighting for outdoor viewing:
• Two display lines
• Twenty characters per line
Color coded 12-button non-tactile keypad with sections
for:
DISPLAY/PRINT of typical information:
• Chilled liquid temperatures
• Ambient temperature
• System pressures (each circuit)
• Operating hours and starts (each compressor)
• Print calls up to the liquid crystal display
• Operating data for the systems
• History of fault shutdown data for up to the last
six fault shutdown conditions.
• An RS-232 port, in conjunction with this press-to-
print button, is provided to permit the capability
of hard copy print-outs via a separate printer (by
others).
ENTRY section to:
ENTER setpoints or modify system values.
SETPOINTS updating can be performed to:
• Chilled liquid temperature setpoint and range
• Remote reset temperature range
• Set daily schedule/holiday for start/stop
• Manual override for servicing
• Low and high ambient cutouts
• Number of compressors
• Low liquid temperature cutout
• Low suction pressure cutout
• High discharge pressure cutout
• Anti-recycle timer (compressor start cycle
time)
• Anti-coincident timer (delay compressor starts)
UNIT section to:
• Set time
• Set unit options