Single And Dual Compressor
Condensing Units
Feature Our Floating Tube™ Coil Design
Expanded (Locked) Auxiliary Tubes:
These tubes support the coil with ns and refrigerant
carrying tubes. They do not carry refrigerant and are
tightly tted on end supports and center supports.
Free Floating Circuited Coil Tubes:
These tubes carry refrigerant and never touch
and sheet metal (end supports and center
supports).
All units include a limited
Five Year Warranty
against condenser leaks at tube sheets and
center supports.
All condensers use the Floating Tube™ coil design to eliminate refrigerant leaks at the tube
sheets. Additional tubes are added to the condenser coil. These tubes are expanded into the
aluminum ns and condenser tube sheets. These anchor tubes support the weight of the coil,
but are not a part of the refrigerant circuit.
The tubes in the refrigerant circuit are expanded into the ns, but “oat” through oversized
holes in the tube sheets. Tube sheet leaks are virtually eliminated, since the tubes which carry
refrigerant never come in contact with the tube sheet.
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Options
E Solutions branded products and options are designed to exceed current energy and environmental
standards. It is our commitment in environmental innovation to dedicate ourselves by delivering energy
ecient eco-conscious choices. Products included in the E Solutions portfolio reduce costs, improve
bottom lines, and enhance equipment performance and service life.
The Beacon II™ Refrigeration System with Smart Defrost, and the factory-installed
Smart Defrost Kit™ are E Solutions options that will optimize your savings and increase
energy eciency.
Available with Beacon II
™
Beacon II™ is the next generation of Bohn’s patented, preassembled, factory installed
refrigeration system featuring an integrated microcomputer-based electronic control
board. The Beacon II™ systems come completely factory installed, wired and tested
saving you time and money.
™
Beacon II™ oers:
• Complete factory installation, wiring and testing which saves time and money
• Simple eld electrical connections and 24 volt wiring between condensing and evaporator units
• Preset factory superheat allowing the system to run more eciently and reducing future adjustments
• Monitors and controls box temperature, evaporator superheat, condenser fan cycling on two fan units,
system status and defrost from outside the box
• Monitor and make system changes remotely via modem and exclusive Beacon II™ Smart II software
• Data logging capabilities with Smart Controller
Beacon II™ Smart Controller
Beacon II™ Smart Controller is an optional system monitoring and
programming control device. It allows for adjustments to be made at the
push of a button from a conveniently mounted location. The Beacon II™ Smart
Controller also allows you to monitor and make changes to the refrigeration
system via modem connection from anywhere in the world. The Beacon II™ has
been updated to allow the user to make even more precise adjustments than the original Beacon’s Smart Controller. One
Smart Controller can program and control up to four separate condensing units with up to four evaporators on each system.
That’s more control in your hands!
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™
Beacon II
Beacon II™ Smart II Software makes it easy to adjust and monitor one or more
refrigeration systems as well as capture minute by minute system conditions. This
Windows-based software allows you to connect to the Beacon II™ Smart Controller
from anywhere in the world to monitor the systems, make adjustments and log
minute by minute system conditions. This data logging capability is critical in the
food service industry.
™
Beacon II
The Beacon II™ Smart Defrost, available only on the Beacon II™ Smart
Controller, enables the Beacon II™ system to sense frost accumulation
and initiates defrost only when it is necessary. To begin, preset defrost
times using the Beacon II™ Smart Controller. At each scheduled defrost
time, Smart Defrost checks system performance to see if a defrost
is necessary. If not, it simply does not defrost, waiting until the next
scheduled defrost time.
Smart Defrost
Smart II Software
Smart Defrost Kit™
The factory installed Smart Defrost Kit (SDK) skips unnecessary defrosts in commercial,
electric defrost walk-in refrigeration systems saving energy, reducing costs and ultimately
improving product integrity. The SDK is available as a factory-installed option on all
condensing units.
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LIMITIZER
®
The Need For Head Pressure Control
Refrigeration condensing units must eciently perform at varying
ambient conditions. A properly sized unit will adequately perform
at even the highest summer ambient temperatures. However, in
situations where the system must operate the majority of the time at
less than design temperature, a means of providing adequate head
pressure for refrigerant ow is desirable.
The Bohn Limitizer® System
The Limitizer® system is a factory assembled system utilizing a Limitizer®
control to maintain a constant head pressure at the air cooled
condensing unit during all climatic conditions when the ambient
temperature drops below 75°F (typical).
When the ambient is above 75°F, the condenser pressure is above
the Limitizer® valve setting and therefore, the valve remains in the
full open position.
As the temperature drops below 75°F, the pressure at the condenser
also drops below the setting of the Limitizer
valve, sensing the reduction in condensing pressure, modulates
toward the closed position, thus restricting the ow of liquid from the
condenser. The liquid backs up into the condenser and oods a portion
of the tubes, thus reducing the overall capacity of the condenser. The
Limitizer® valve will continue to ood the condenser until the pressure
setting has been reached, thus providing proper head pressure at all
ambient temperatures.
®
valve. The Limitizer®
While the condenser oods, a second line pressurizes the receiver
through another valve. Therefore, the refrigerant flow from the
condenser to the receiver modulates with conditions. However, the
bypass from the discharge line maintains a minimum receiver pressure.
These valves are adjustable and the minimum receiver pressure may
be reset higher or lower depending upon application situations of a
particular job. The Limitizer
adjustable design.
®
system uses this two-valve,
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Bitzer Compressors
Features and Benets
Bitzer is the world’s largest manufacturer of semi-hermetic refrigeration compressors
over 3 HP. In business since 1934, Bitzer has manufacturing plants in Germany,
Brazil, Portugal, China and the United States and operates in over 100 countries
around the world. Bitzer’s Georgia plant manufactures a complete range of
semi-hermetic compressors from 3 to 50 HP. Bitzer provides aftermarket support
through wholesalers and also provides 24-hour replacement service from its seven
distribution warehouses located across the U.S.
Bitzer Oers:
• 2-Year Warranty
• Unloader Heads Standard on All 4 & 6-cylinder Models
• Dual Voltage Control Modules on All Models
• Dual Voltage Compressors (6 to 50 HP)
• Lowest Sound Levels in their Class (Built-in Muers)
• Superior Lubrication and Low Oil Circulation Rates
• German Engineering / Built in America
Bitzer Standard Execution
POE Oil Charge√√
Protective Dry-Nitrogen Charge√√
Suction & Discharge Service Valves√√
Dual Voltage INT Protection Modules√√
Terminal Box Enclosure Class IP65√√
Unloader Heads√√
Patented Internal Muers√√
Centrifugal Oil System√√
Conventional Oil Pump√√
Bitzer Options4C Models4B & 6B
Mounting Hardware (Spring Kits)√√
Hard Mount Kits√√
Optical Oil Sensor√√
Crankcase Heaters√√
Unloader Stems / Coils√√
Head Fans and Brackets√√
Delta P II Dierential Oil Pres. Switch√√
Octagon
4C Models
4B & 6B
Models
Bitzer Quiet!!!
Bitzer compressors are famous for their low sound
levels. We change capacities within a frame size by
changing our bore diameters rather than the length
of the piston strokes. This gives our compressors an
unsurpassed balance and precision that translates
to low decibels. In addition, Bitzer compressors
have a muer built into each head (see photo) that
eliminates pulsations and reduces the sound levels
even further.
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Bitzer Compressors
Features and Benets
Octagon® 4C Models
Bitzer Octagon 4C Models are rated from 3 to 20 HP. This rugged, compact
series utilizes wear resistant drive gear with PTFE coated bearings for especially
low friction, aluminum pistons of optimized geometry, connecting rods with
eccentric straps and generously dimensioned bearing surfaces. Bitzer’s centrifugal
lubrication system eliminates the need for an oil pump and provides optimum oil
supply to the compressor even under extreme operating conditions.
Centrifugal Lubrication
The centrifugal lubrication design employs a solid metal disc
mounted to the crankshaft (see cut-away) that distributes
oil into a reservoir at the end of the shaft. The oil then ows
through the shaft to the bearing surfaces.
OLC-K1 Operating Principle
The OLC-K1 sensing device shines an infrared light into
the oil reservoir. If oil is present, the light is absorbed
and the compressor runs normally. If no oil is present,
the light reects on the sensor, and the compressor
shuts o.
Bitzer 4B & 6B Models
Bitzer 4B through 6B Models are rated from 13 to 50
HP. This series features surface hardened crank shafts,
low friction bearings, aluminum pistons, hard chrome
plated piston rings and special wrist pin bearings.
The 4B & 6B models have a sealed main bearing and
generously sized oil pump. Our patented oil return
system ensures complete lubrication while reducing oil
circulation into the system. Ecient capacity control
is provided by unloader banks that can signicantly
reduce energy consumption.
Bitzer oers an optional Optical Oil Sensor (See OLC-K1 photo
below) that mounts to the outer cover of the compressor
and monitors oil level by means of an infrared light.
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Horizontal Air Discharge Condensing Units 4 to 13 HP
Standard and Optional Features
• Floating Tube™ coil design
• Ried copper condenser tubing
• Designed for use with R-404A, R-507
• Prebent copper tubes minimize welded joints on
internal piping
• Fixed high and adjustable low pressure controls.
• Oil safety control
• Head pressure control valve
• Bitzer compressors with POE oil
• Spring mounted compressor with suction and discharge
vibration eliminators
• Crankcase heater
• Thermally protected, permanently lubricated ball bearing
condenser fan motors
• Separate subcooling circuit in condenser for added capacity
and vapor-free liquid
• Pressure relief valve on receiver
• Sealed liquid line lter drier and sight glass
• Electrical controls, including compressor contactor and
optional defrost control, are located in easily accessible control
box with a hinged cover
• Service Mate
• Pumpdown Switch
• Cabinet is constructed from prepainted galvanized steel
• Base valve and high & low pressure taps on outside
of unit
• Vertical receivers
™
module to assist troubleshooting
Factory-Installed Options
• Oversized receiver
• Replaceable core liquid lter drier
• Liquid line solenoid valve
• Suction lter
• Replaceable core suction lter
• Suction accumulator
• Oil separator
• Air defrost timer
• Electric defrost kits, including timer, evaporator fan contactor
with fusing, defrost heater contactor(s), lockout relay and
terminal strip
• Fusing for defrost kits
• Evaporator holdout relays for systems with multiple electric
defrost evaporators
• Low ambient kit with heated and insulated receiver with
time delay
• Fused disconnect switch
• Non-fused disconnect switch
• Phase-loss monitor
• Manual-reset high pressure switch
• Anti-short cycle timer
• Compressor circuit breakers
• Condenser fan cycling
• Coated condenser coils
• Copper nned coil
• Beacon II
• Hail guards (shipped loose)
• Compressor unloading
• NEMA contactors
• 12" extended legs for snowbelt region (shipped loose)
• Slanted louver for snowbelt regions (shipped loose)
• Dual pressure control
™
compatible
Horizontal Discharge
Nomenclature
BBT
BrandCompressorApplicationHorsepowerTemp. Range
B = BohnB = BitzerT = Outdoor
N = Indoor
S = Beacon II
™
0000
0401 - 4
0551 - 5
0601 - 6
0611 -6
0751 - 7.5
0901 - 9
1001 - 10
1201 - 12
1301 - 13
L
M = Med. Temp.
L = Low Temp.
6C
RefrigerantVoltage
6 = R-404A,
R-507
C = 208-230/3/60
D = 460/3/60
E = 575/3/60
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Performance Data
Medium Temperature R-404A/R-507
3 - 22 HP Condensing UnitsHorizontal Discharge
Unit Model
Number
BB*0551M64C0969SH
BB*0751M64C1145SH
BB*0901M64C1385SH
BB*1001M64C1480PH
Compressor
Model
Low Temperature R-404A/R-507
Unit Model
Number
BB*0401L64C0969SL
BB*0551L64C1145SL
BB*0601L64C1385SL
BB*0611L64C1480PL
BB*0751L64C1761PL
BB*1001L64C2067PL
BB*1201L64C2397PL
BB*1301L64B2707PL
*= T for Outdoors, N for Indoors, S for Beacon II
Consult factory on all models for applications above 110°F ambient.
*= T for Outdoors, N for Indoors, S for Beacon II
^ Consult factory for 50Hz applications.
† MCA = Minimum Circuit Ampacity
†† MOP = Maximum Overcurrent Protection
‡ Condensing unit data plate ratings will be based on actual system match.
Vertical Air Discharge Condensing Units 13 to 50 HP
Single Compressor
Standard and Optional Features
• The Floating Tube™ coil design. Refrigerant-carrying copper
tubes do not contact any metal support sheets; instead,
the coil is constructed with expanded anchor tubes that
support the coil construction and do not carry refrigerant.
The coil design eliminates one of the major causes of leaks in
refrigeration systems
• Limited ve-year warranty against condenser tube sheet and
center support leaks
• Designed for use with R-404A, R-507
• Prebent copper tubes minimize welded joints on
internal piping
• All sweat type connections, no are joints to leak
• Fixed high pressure switch eliminates capillary tubes
• Oil safety control
• Bitzer compressors with POE oil
• Spring mounted compressor with suction and discharge
B*V = BLV is Limitizer®, BDVS is Beacon II
† MCA = Minimum Circuit Ampacity
† † MOP = Maximum Overcurrent Protection
‡ Condensing unit data plate ratings will be based on actual system match.
Beacon II™ and Air Defrost Units do not carry any of the evaporator fan or heater loads. Power is
brought directly to the evaporators and does not go through the condensing unit.
An evaporator heater hold out relay (option) is recommended when two or more evaporators are
connected to a single (BLV/ BBV) condensing unit to allow termination on coils that have already
defrosted to prevent unnecessary steaming. This option is not needed on Beacon II™ (BDVS)
systems wired for a Master / Slave operation. Power is brought to each Beacon evaporator. Each coil
terminates its own defrost. Refrigeration will not start until all coils have terminated defrost.
J*D = JLD is Limitizer®, JDDS is Beacon II™, JLD*PP is Parallel Piped
† MCA = Minimum Circuit Ampacity
†† MOP = Maximum Overcurrent Protection
‡ Condensing unit data plate ratings will be based on actual system match.