The Single And Dual Compressor Vertical Air Discharge
Condensing Units Feature Our Floating Tube
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 the
sheet metal end supports or center supports.
™
Coil Design
All BLV, BDVS, JLD and JDDS
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.
3
Beacon II
™
™
Beacon II™ Refrigeration System is a patented pre-
assembled, factory installed refrigeration system featuring
an integrated microcomputer-based electronic control board.
™
Beacon II
n
Complete factory installation, wiring and testing which
saves time and money!
n
Simplied eld electrical connections and 24 volt wiring
between condensing and evaporator coil.
n
Preset factory superheat allowing the system to run more
efciently and reducing future adjustments.
n
Monitors and controls box temperature,
evaporator superheat, system status and defrost.
n
Monitor and make system changes remotely via internet
and exclusive Beacon II
n
Data logging capabilities with Smart Controller.
offers:
™
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. Beacon II
also allows you to monitor and make changes to the
refrigeration system via internet connection from anywhere
in the world via the optional Heatcraft Remote Refrigeration
Control (RRC) feature. One Smart Controller can program and
control up to four condensing units with up to four evaporators
on each system. That’s more control in your hands!
Smart Controller
The patented
Beacon II™ Smart Defrost system, available
with Smart Controllers, is uniquely designed to predict
frost accumulation and initiates defrosts only when they
are needed. It also initiates defrosts to react to operation
anomalies, like product deliveries and product pull-down.
Typical electric defrost systems have four defrosts per day.
Using the Smart Defrost system can reduce the number
of defrosts to 0, 1 or 2 per day. That’s a 75% reduction on
average. This greatly reduces the amount of energy used and,
in turn, reduces operating costs.
4
Adjustable Head Pressure Control
The Need For Head Pressure Control
Refrigeration condensing units must efciently 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 BLV & JLD units have an
adjustable head pressure method of head pressure control.
The Bohn Adjustable Head Pressure
Control System
The Adjustable Head Pressure system is a factory assembled
system utilizing an adjustable head pressure 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 adjustable head pressure 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 adjustable head
pressure valve. The adjustable head pressure 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, reducing the overall capacity
of the condenser. The adjustable head pressure valve will
continue to ood the condenser until the pressure setting has
been reached, providing proper head pressure at all ambient
temperatures.
While the condenser oods, a second line pressurizes the
receiver through another valve; therefore, the refrigerant ow
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
Adjustable Head Pressure Control system uses this two-valve,
adjustable design.
Options
5
Features & Benefits
The 12-40 HP single compressor vertical condensing units and 24-80 HP dual compressor vertical condensing units are
designed to meet the needs of a demanding commercial and industrial refrigeration market. The product is congured to
be exible in its design and construction to allow it to respond to the requirements of refrigeration contractors, consulting
engineers and facility owners/operators. The Floating Tube™ coil design incorporated in the product provides reliability
against tube sheet leaks.
Cabinet & Construction
n
All units feature the Floating Tube™ coil which eliminates
tube sheet leaks
n
Painted steel cabinet for superior strength and corrosion
resistance
n
Dual compressor models available in standard or parallelpiped congurations
Serviceability
n
Manual pumpdown switch on all units
n
Convenient access panels to easily service internal
components
n
Large electrical panel to facilitate ease of access
Energy Efficiency
n
California Title 24 compliant when congured with
available engineered-to-order options. Consult your
Heatcraft Representative for applicable model specic
options.
Quality
n
Sight glass is easily viewable
n
Fixed high and adjustable low pressure switch
n
Refrigeration duty, ried copper condenser tubing
n
Piping is laid out to minimize stress and vibration and
is pre-bent to eliminate braze joints, where possible, to
reduce leak potential
n
All joints are sweat type connections, no mechanical joints
to leak
n
Separate subcooling circuit in condenser for added
capacity and vapor free liquid
n
Pressure relief valve on receiver
n
ServiceMate™ diagnostic module standard on all nonBeacon II™ condensing units
Components
Compressor
n
Spring-mounted compressors with suction and discharge
eliminators
n
Receivers are sized for sufcient pumpdown capacity with
inlet and outlet service valves
Motor
n
Single compressor models
EC (VSEC) Motors
Other
n
Sight glass and permanent liquid line lter
available with Variable Speed
6
Condenser Fan
Contactor and Fuses
Compressor Contactor
Phase Loss Monitor
(Optional)
Single Vertical Air Discharge Condensing Unit
Electrical Box Features
Single Compressor
Control Circuit Fuses
& Pumpdown Switch
All Service Controls are located in a
separate electrical panel allowing
eld adjustments without
disconnecting power to the unit
Compressor Circuit
Breaker (Optional)
Disconnect (not pictured) is
located in this area when supplied
Evaporator Fan
Contactors & Fuses
Defrost Heater
Contactors & Fuses
(Not Shown) (Optional)
Prepainted Galvanized
Steel Cabinet
(Optional)
3/8" Floating Tube
™
Coil Design
Condenser Coil
Internal Piping
Prebent Internal Piping
Eliminates Braze Joints
Defrost Time Clock
(Optional)
Adjustable Low
Pressure Control
Fan Cycle Pressure Control and
Unloader Pressure Controls
(Optional)
NOTES:
B*V = BLV is Adjustable Head Pressure Control, BDVS is Beacon II
All units will work in 120°F ambient
For 50 cycle capacity, multiply values by .86
12
Capacity BTUH @ 110°F Ambient by SST
0°F-10°F-15°F-20°F-30°F-40°F
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