Standard Features .................................................................................................................................................................................................................... 3
R-22 Discus® Compressors - High Temperature............................................................................................................................................................. 8
R-22 Scroll® Compressors - Low Temperature ................................................................................................................................................................8
R-22 Discus® Compressors - Low Temperature ..............................................................................................................................................................9
R-404A/R-507 Discus® Compressors - Medium Temperature
R-404A/R-507 Discus® Compressors - Low Temperature ........................................................................................................................................11
R-404A/R-507 Scroll® Compressors - Medium Temperature ..................................................................................................................................12
R-404A/R-507 Scroll® Compressors - Low Temperature ..........................................................................................................................................12
Electrical Specications
R-22 Discus® Compressors - High Temperature...........................................................................................................................................................13
R-22 Scroll® Compressors - Low Temperature ..............................................................................................................................................................14
R-22 Discus® Compressors - Low Temperature ............................................................................................................................................................14
R-404A/R-507 Discus® Compressors - Medium Temperature
R-404A/R-507 Discus® Compressors - Low Temperature ........................................................................................................................................15
R-404A/R-507 Scroll® Compressors - Medium Temperature ..................................................................................................................................16
R-404A/R-507 Scroll® Compressors - Low Temperature ..........................................................................................................................................16
Physical Specications
R-22 Discus® Compressors - High Temperature...........................................................................................................................................................17
R-22 Scroll® Compressors - Low Temperature ..............................................................................................................................................................17
R-22 Discus® Compressors - Low Temperature ............................................................................................................................................................17
R-404A/R-507 Discus® Compressors - Medium Temperature
R-404A/R-507 Discus® Compressors - Low Temperature ........................................................................................................................................18
R-404A/R-507 Scroll® Compressors - Medium Temperature ..................................................................................................................................18
R-404A/R-507 Scroll® Compressors - Low Temperature ..........................................................................................................................................18
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, the factory-installed Smart Defrost Kit™
and the Bohnmizer® System are E Solutions options that will optimize your savings and increase
energy eciency.
Smart Defrost Kit™
The Smart Defrost Kit (SDK), available as a factory-installed option or as an aftermarket
retrot kit via InerLink Commercial Refrigeration Parts, is a control module that can reduce
the number of defrosts by up to 40% on a typical commercial refrigeration system. This
reduces energy consumption and costs.
Beacon II™ Refrigeration System
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
• 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!
™
Smart II software
4
™
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
Scroll® Compressors
Bohn condensing units are available with Copeland’s Scroll® compressor. Copeland’s Scroll®
compressors are hermetically sealed so no service is required. The Scroll’s® ability to handle liquid
refrigerant makes it extremely reliable and, in low temperature applications, liquid injection is
provided to lower discharge temperatures under adverse conditions. Also, nuisance oil safety
trips are eliminated because the Scroll® doesn’t require an oil pressure sensing device.
Electrical OptionsMechanical Options
• Smart Defrost Kit™ (SDK)
• Crankcase heater on indoor units
• Mounted fused disconnect
• Fan cycling
• Low ambient kit (Heated & insulated receiver with low
pressure cut-out time delay)
• Defrost timer for air defrost
• Defrost timer & contactor for electric defrost includes
evaporator fan subfusing (Only the large 2 fan units
have evaporator fan sub-fusing included as standard in
the Electric Defrost kit)
• Beacon II™ kits (see Beacon II™ section for details)
• Bohnmizer® Kits (see Bohnmizer® section for details)
• Electric Defrost Fusing (includes evaporator fan fusing on
1 fan and 2 fan units)
• Dual-pressure control*
• Adjustable high pressure control with manual reset*
• Phase-loss monitor*
• Compressor fusing*
• Circuit breaker circuit protection for compressor,
condenser fan and control circuit*
* Available on large two-fan cabinet only
• Head pressure valve on indoor units
• Mounted liquid line solenoid valve
• Replaceable core liquid line lter/drier
• Permanent suction line lter
• Replaceable core suction line lter
• Suction accumulator
• Oil separator
• Bohnguard™condenser coating
• Copper nned coil
• Oversized receiver
• Slanted louver for snowbelt regions (not available with
indoor unit)
• 12" extended legs for snowbelt regions
• Hail guards
• NEMA contactors*
• Compressor unloading (one step)*
5
BOHNMIZER
®
THE BOHNMIZER® SYSTEM
The Bohnmizer® system is a complete factory furnished commercial refrigeration split system designed to operate properly
regardless of climatic conditions. As the ambient temperature falls below 75° F, the head pressure is allowed to decrease in
direct relationship to the ambient.
The heart of the system is the Bohnmizer® valve, whose design allows the proper amount of refrigerant to ow to the
evaporator regardless of the valve inlet pressure. The Bohnmizer® valve also responds very rapidly to changes in suction
temperature, which assures the maintenance of low superheat, regardless of the ambient temperature.
The Bohnmizer® system concept results in operational energy savings, increased compressor life, reduced refrigerant costs
and less maintenance expense.
ENERGY SAVINGS - SCROLL® CONDENSING UNITS
The compressor is the largest energy user in a refrigeration system. With the Bohnmizer® system the compressor is allowed to
operate at a lower average discharge pressure over an annual cycle which requires less energy. This means less money to run
the system. An appreciable dierence in your energy bill can be seen.
After extensive laboratory testing, Bohn has developed charts to assist you in determining the savings. The results of these
calculations are shown in the following graphs: the graph for low temperature rooms and the graph for medium temperature
rooms. To determine your savings simply enter the average annual outdoor air temperature for your area and draw a vertical
line up to the system number curve, then over to the savings per year line. These savings are based on 7.5¢/kWh.
If your energy cost or room temperature is dierent, simply multiply the savings gure by the factor obtained from the table.
See the example provided.
Example: Size 10 hp System
-10°F Room Temperature
55°F Average Outdoor Air Temperature
$.10 cost per kWh
ADVANTAGES
• NO EXTRA REFRIGERANT REQUIRED
The charge for summertime operation serves year round.
• INSTANT START-UP
Regardless of outdoor ambient, Bohnmizer® starts in response to room thermostat.
• THE EVAPORATOR OPERATES MORE EFFICIENTLY YEAR ROUND
No icing in the winter - low head pressure is no problem for Bohnmizer®.
• LONGER COMPRESSOR LIFE
Lower head pressure means lower average compression ratio, and lower discharge gas temperatures.
The precise refrigerant control prevents liquid slugging.
Crankcase heater prevents condensation of refrigerant in the crankcase.
Savings Per Year $810
Correction Factor 1.33
Corrected Savings Per Year
$1077
6
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