Heatcraft Refrigeration Products CC-CUBZTB User Manual

CCCUBZTB

April 2009, v. 001

CLIMA

TE

CONTROL

AIRCOOLED CONDENSING UNITS

WITH BITZER COMPRESSORS

Technical Guide

www.coldyoucancounton.com

Table of Contents

Floating Tube™ Coil 3
Options 4
Head Pressure Control 5
Bitzer Compressor
Features and Benets 6-7

Horizontal Air Discharge Condensing Units 4 to 13 HP

Standard and Optional Features 8
Nomenclature 8

Performance Data

Medium Temperature - R-404A/R-507

Low Temperature

Electrical Data

Medium Temperature - R-404A/R-507
Low Temperature

Specications and Dimensional Data

Medium Temperature - R-404A/R-507
Low Temperature

- R-404A/R-507

- R-404A/R-507

- R-404A/R-507

9

9

10

10

11

11

Vertical Air Discharge Condensing Units 13 to 50 HP, Single Compressor

Standard and Optional Features 12

Nomenclature 12
Performance Data

Medium Temperature
Low Temperature

Electrical Data

Medium Temperature
Low Temperature

Specications and Dimensional Data
Medium Temperature
Low Temperature

Vertical Air Discharge Condensing Units 26 to 100 HP, Dual Compressor

Standard and Optional Features 17
Nomenclature 17
Performance Data

Medium Temperature
Low Temperature

Electrical Data
Medium Temperature
Low Temperature

Specications and Dimensional Data
Medium Temperature
Low Temperature

- R-404A/R-507

- R-404A/R-507

- R-404A/R-507

- R-404A/R-507

- R-404A/R-507

- R-404A/R-507

- R-404A/R-507

- R-404A/R-507

- R-404A/R-507

- R-404A/R-507

- R-404A/R-507

- R-404A/R-507

13

14

15

15

16

16

18

19

20

20

21

21

© 2009 Heatcraft Refrigeration Products, LLC

2

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.

3

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
ecient 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 eciency.

Beacon II™ Refrigeration System

Beacon II™ is the next generation
of Climate Control’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™ oers:

• 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 eciently 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!

Beacon II

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.

™

Smart II Software

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

Beacon II™ Smart Defrost

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 Kit

energy, reducing costs and ultimately improving product
integrity. The SDK is available as a factory-installed option
on all condensing units.

TM

The factory installed Smart
Defrost KitTM (SDK) skips
unnecessary defrosts in
commercial, electric defrost walk­in refrigeration systems saving

4

HEAD PRESSURE CONTROL

Refrigeration condensing units must efficiently
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 CDV & CDD
units have an adjustable method of head pressure

control.

This system provides year round control of refrigerant
head pressure without the use of special refrigerant
expansion valves. As the ambient temperature falls,
the reciever pressure is allowed to fall to a minimum
of 75°F saturated condensing pressure. The reduced
discharge pressure at the compressor increases the
compressor capacity and lowers the input watts
from the compressor motor. The system also uses
the reduced ambient temperature to subcool the
liquid refrigerant in the condenser. This subcooled
liquid also increases system capacity. As a general
rule, every one degree of subcooling results in 0.50%
increase in system capacity. Together these result
in greater eciency, greater capacity, and reduced
run time.

Operation

As the ambient temperature falls, the system
condensing pressure is also reduced. This pressure
is maintained by a regulator (ORI-6-65/225) at the
condenser drain. At approximately 75°F saturated
condensing pressure the regulator restricts the flow
of liquid refrigerant from the condenser causing the
condenser to flood. This condenser flooding allows
the liquid refrigerant in the condenser to become
subcooled by the ambient air flowing through the
condenser. As the regulator continues to flood the
condenser, a pressure differential will be established
between the receiver and the compressor discharge.
At a predescribed differential, a second valve (ORD-

4) will open and allow discharge gas from the
compressor to bypass the condenser and flow into
the top of the receiver. This gas is used to pressurize
the receiver. These valves are adjustable and the
minimum receiver pressure may be reset higher or
lower depending upon application situations of a
particular job.

Subcooled liquid is further enhanced by the routing
of liquid from the receiver liquid line outlet to the
condenser before leaving the condensing unit.

Benets:

• Automatic year-round control of refrigerant head
pressure without the use of special expansion
valves.

• Energy savings in mild ambient conditions due
to reduced compressor discharge pressure and
refrigerant subcooling

• Provides easy restart during low ambient
conditions.

5

Bitzer Compressors
Features and Benets

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 Oers:

• 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 Muers)

• 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 Muers √ √

Centrifugal Oil System √ √

Conventional Oil Pump √ √

Bitzer Options 4C Models 4B & 6B

Mounting Hardware (Spring Kits) √ √

Hard Mount Kits √ √

Optical Oil Sensor √ √

Crankcase Heaters √ √

Unloader Stems / Coils √ √

Head Fans and Brackets √ √

Delta P II Dierential 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 muer built into each head (see photo) that
eliminates pulsations and reduces the sound levels
even further.

6

Bitzer Compressors
Features and Benets

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 reects 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. Ecient capacity control
is provided by unloader banks that can signicantly
reduce energy consumption.

Bitzer oers 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.

7

Horizontal Air Discharge Condensing Units 4 to 13 HP

3 - 22 HP Condensing UnitsHorizontal Discharge

Standard and Optional Features

• Floating Tube™ coil design

• Ried 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™ module to assist troubleshooting

• Pumpdown Switch

• Cabinet is constructed from prepainted galvanized steel

• Base valve and high & low pressure taps on outside
of unit

• Vertical receivers

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™ compatible

• 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

Nomenclature

C B T

Brand Compressor Application Horsepower Temp. Range

C =
Climate
Control

B = Bitzer T = 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.

8

6 C

Refrigerant Voltage

6 = R-404A,

R-507

C = 208-230/3/60
D = 460/3/60
E = 575/3/60