Bohn ART82C1-CAV Service Manual

MULTIPLE COMPRESSOR
CONDENSING UNITS

Technical Guide

BNFPTB

April 2007

(Replaces BN-TB-FP, 04/04)

Table of Contents

Construction ...............................................................................................................................................................................3

System Features .........................................................................................................................................................................3

Standard Compressor Module Components ..................................................................................................................4

Optional Compressor Module Components ...................................................................................................................4

Dimensions ..................................................................................................................................................................................5

Physical Specications .............................................................................................................................................................6

Electrical Data, Scroll® Compressors ...................................................................................................................................7

Electrical Data, Hermetic Compressors .............................................................................................................................8

Capacity (BTUH) Data, Reciprocating Hermetic, R-22, Medium and High Temperature ................................. 9

Capacity (BTUH) Data, Reciprocating Hermetic, R-404A, Extended Temperature .......................................... 10

Capacity (BTUH) Data, Reciprocating Hermetic, R-404A, Low Temperature ..................................................... 11

Capacity (BTUH) Data, Scroll® Hermetic, R-404A, Medium Temperature ........................................................... 12

Capacity (BTUH) Data, Scroll® Hermetic, R-404A, Low Temperature .................................................................... 13

Capacity (BTUH) Data, Scroll® Hermetic, R-22, Medium Temperature................................................................. 14

Capacity (BTUH) Data, Scroll® Hermetic, R-22, Low Temperature ......................................................................... 15

©2007, Heatcraft Refrigeration Products LLC

2

FlexPack™ Technical Bulletin

FlexPack™ was designed for energy savings, reduced installation time and expense,

and a better return on your investment.

Construction

The industrial grade cabinet is constructed of heavy gauge G90 painted steel. The top and sides of the unit can
be easily removed for convenient access to electrical and mechanical components. The unit also has a rooftop AC
style appearance to simply blend in to the existing environment along with ush mounted fans for a sleek look.
In addition, the unit has a clean and intuitive electrical and piping layout. All of the engineering for this unit was
produced with a team approach by a worldwide leader in the refrigeration industry.

The unit was designed for 100°F ambient operation. It can be congured for higher ambient applications. The units
are also Beacon II™ capable and were designed with state-of-the-art energy ecient motors.

• Single unit to place on roof reduces installation cost

• Small footprint requires less room on the roof or in the back of the store

• Single point wiring and piping lowers installation cost and provides a single penetration point through the roof

• Signicantly reduce air conditioning energy costs by reducing the heat load in the space through the use of
remote condenser circuits

• Sounds quieter with fewer condenser fans and the reduced noise level of vertical fans

System Features

• Up to 3 compressors, 1/2 - 6 HP Hermetic or Scroll®

• AR, CF, CR, CS, RS, ZF, ZS standard compressors

• 230 volt/1-phase/60 hertz and 230 volt/3-phase/60 hertz units available

• 95 pre-engineered compressor modules to choose

• 1, 2, or 3 condenser fan congurations

• R-22 and R-404A for medium or low temperature applications

• Remote condenser circuits for ice machine, drink dispenser, display cases and more

• Capacity range

√ 1 Fan = 6 HP (up to 2.5 to 3 HP per side)
√ 2 Fan = 12 HP (up to 5 to 6 HP per side)
√ 3 Fan = 18 HP (up to 6 to 7.5 HP per side)

• Electrical component layout lines up with compressor module

• Beacon II™ or conventional mechanical controls available

• Energy ecient, ush mounted 18” fans with 1100 RPM motors

• Painted G90 steel cabinet

• Aluminum n coils are standard; copper n coils and polyester coated coils are optional

• Convenient hinged access panels for easy access

• UL listed for US and Canada

FlexPack™ Technical Bulletin

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Compressor Module Components

Compressor Module Components

Standard Optional

• Fixed high pressure switch

• Remote condenser circuit

• Fixed low pressure switch on medium and high
temperature compressor modules

• Adjustable low pressure switch on low
temperatures modules

• Suction service ports on all modules

• Suction accumulator (CS & CF extended
temperature compressors)

• Vertical receiver in 6” x 12” or 6” x 27” sizes

• Sealed type liquid line drier

• Sealed type suction lter

• Head pressure control valve

• Crank case heater

• Sight glass

• Remote condenser circuit, pre-charged R-22

• Remote condenser circuit, pre-charged R-404A

• Polyester coated ns

• Copper nned coil

• Individual compressor fusing, 230V

• Individual compressor circuit breakers, 230V

• Adjustable low pressure switch on medium and
high temperature compressor modules

• Fused disconnect - 30, 60 or 100 amps

• Beacon II™ refrigeration controller

• Air or electric defrost timer

• Liquid line solenoid valve & pump down switch

FlexPack™ Technical Bulletin

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Dimensions

Single Fan Top View

Two Fan Top View

End View

System Position

3

Please note system positions

Liquid Lines

Suction Lines

2

1

Electrical Knockout (4)

Three Fan Top View

Side View

X = 100.50 (Three Fan Length)

X = 78.00 (Two Fan Length)

X = 59.00 (Single Fan Length)

SYS. 1

SYS. 2

SYS. 3

FlexPack™ Technical Bulletin

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