JOHNSON CONTROLS
14
FORM 150.67-NM2 (209)
Product Description
The heat exchanger is a brazed plate stainless steel
construction, single or dual circuit heat exchanger
capable of refrigerant working pressure of 650 PSIG
(3103 kPa) and liquid side pressure of 150 PSIG (1034
kPa) (Option for 300 PSIG [2068 kPa] available). Each
heat exchanger is covered in 3/4” (19mm)
fl
exible,
closed cell insulation, thermal conductivity of 0.26k
(BTU/HR-FT
2
– °F] /in) maximum.
A strainer with a mesh size between .5 and 1.5 mm (40
mesh) is recommended upstream of the heat exchanger
to prevent clogging.
Condenser
Coils
– Fin and tube condenser coils of seamless,
internally-enhanced, high-condensing-coefficient,
corrosion resistant copper tubes are arranged in
staggered rows, mechanically expanded into aluminum
fi
ns. Integral subcooling is included. The design working
pressure of the coil is 650 PSIG (45 bar).
Low Sound Fans
– The condenser fans are composed
of corrosion resistant aluminum hub and glass-
fi
ber
reinforced composite blades molded into a low noise
airfoil section. They are designed for maximum
ef
fi
ciency and are statically and dynamically balanced
for vibration free operation. They are directly driven
by independent motors, and positioned for vertical air
discharge. All blades are statically and dynamically
balanced for vibration-free operation. The fan guards
are constructed of heavy-gauge, rust-resistant, PVC
coated steel wire.
Motors
– The fan motors are Totally Enclosed Air-
Over (TEAO), direct drive, 6 pole, current protected.
They feature ball bearings that are double-sealed and
permanently lubricated.
MILLENIUM CONTROL CENTER
All controls are contained in a NEMA 3R/12 (and
equiv a lent to IP55*) cabinet with hinged outer door
and in cludes:
Liquid Crystal Display with Light Emitting Diode back-
light ing for outdoor viewing:
• Two display lines
• Twenty characters per line
Color coded 12-button non-tactile key pad 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 shut down 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
UNIT ON/OFF
switch
The microprocessor control center is capable of
dis play ing the following:
• Return and leaving liquid temperature
• Low leaving liquid temperature cutout setting
• Low ambient temperature cutout setting
• Outdoor air temperature
• English or Metric data
Summary of Contents for YCAL0019
Page 55: ...FORM 150 67 NM2 209 55 JOHNSON CONTROLS 5 5 ELEMENTARY WIRING DIAGRAM CON T LD12699D...
Page 57: ...FORM 150 67 NM2 209 57 JOHNSON CONTROLS 5 5 ELEMENTARY WIRING DIAGRAM CON T LD12693C...
Page 59: ...FORM 150 67 NM2 209 59 JOHNSON CONTROLS 5 5 ELEMENTARY WIRING DIAGRAM CON T LD 12198...
Page 61: ...FORM 150 67 NM2 209 61 JOHNSON CONTROLS 5 5 LD12702 ELEMENTARY WIRING DIAGRAM CON T...
Page 63: ...FORM 150 67 NM2 209 63 JOHNSON CONTROLS 5 5 LD12696 ELEMENTARY WIRING DIAGRAM CON T...
Page 65: ...FORM 150 67 NM2 209 65 JOHNSON CONTROLS 5 5 CONNECTION WIRING DIAGRAM CON T LD12703B...
Page 67: ...FORM 150 67 NM2 209 67 JOHNSON CONTROLS 5 5 CONNECTION WIRING DIAGRAM CON T LD12697B...
