Bohn HWN, ZWN User Manual

BNWCCUTB

August 2016

Replaces BN-WCUTB, June 2015

WATERCOOLED CONDENSING UNITS

Technical Guide

Models HWN | Hermetic • ZWN | Scroll • SWN | Semi-Hermetic

TABLE OF CONTENTS

HWN & ZWN Models

Nomenclature ........................................................................................................................................................................................... 2

Features & Benets. .................................................................................................................................................................................3

Application Data ...................................................................................................................................................................................... 4

Specications & Options ....................................................................................................................................................................... 5

Hermetic Compressors ....................................................................................................................................................................6-10

Performance Data ......................................................................................................................................................................... 6-8

Unit Specications ........................................................................................................................................................................... 9

Electrical Data .................................................................................................................................................................................. 10

Scroll Compressors .......................................................................................................................................................................... 11-13

Performance Data .................................................................................................................................................................... 11-12

Unit Specications ......................................................................................................................................................................... 13

Electrical Data .................................................................................................................................................................................. 13

SWN Models

Nomenclature ........................................................................................................................................................................................... 2

Features & Benets. ...............................................................................................................................................................................14

Options ......................................................................................................................................................................................................15

Semi-Hermetic Compressors ...................................................................................................................................................... 16-23

Performance Data .................................................................................................................................................................... 16-20

Unit Specications ......................................................................................................................................................................... 21

Electrical Data ........................................................................................................................................................................... 22-23

Dimensional Drawings ........................................................................................................................................................................22

NOMENCLATURE  HWN & ZWN MODELS

ZW N 030 L 6 B

Compressor Application Equiv. HP Temp. Refrigerant Voltage

HW = Hermetic
ZW = Scroll

N = Indoor 005 = 1/2HP

008 = 3/4HP
010 = 1HP
01* = 1-1/2HP
02* = 2HP
03* = 3HP
04* = 4HP
05* = 5HP
060 = 6HP

H = High
L = Low
X = Medium/Low

6 = R-404A/507/
R407A/R407C,
R448A/R449A

B = 208/230/1/60
C = 208/230/3/60
D = 460/3/60

NOMENCLATURE  SWN MODELS

S W N 0500 H 6 C

Compressor Model Application Model Size Temp. Refrigerant Electrical Code

S = Semi-Hermetic
Reciprocating

W = Water-Cooled N = Indoor 0075 - 2200 L = Low

M = Medium
E = Extra Low

6 = R–404A/507/
R407A/
R407C/407F,
R448A/R449A

B = 208/230/1/60
C = 208/230/3/60
D = 460/3/60
E = 575/3/60
G = 230/1/60

2

FEATURES & BENEFITS - HWN & ZWN Models

Construction

• Component location and unit size are all optimized for easy eld replacements or
new installations where space is limited.

• Extra space is provided inside the electrical box for service and installation of
additional components.

• Copeland® hermetic and scroll compressors for low and medium temperature
operation using R404A.

• All units are provided with a water regulating valve for superior head pressure
control.

• An extra capacity receiver with liquid shut-o valve is provided for installations with
long refrigerant lines.

• A pumpdown switch is provided on all models for eld servicing.

Serviceability

• Easy access to the large electrical panel for service diagnostics or options.

• Color-coded wire harnesses are all labeled and coded for easy identication.

• A suction line rotolock service valve is provided on the compressor for service.

• An additional shut o valve is mounted in the discharge line of the compressor for
quick and easy isolation of the compressor for service.

• Schrader® valves permit recovery of refrigerant isolated in compressor for quick and
easy compressor change if ever needed.

Quality

• Piping is laid out to minimize stress and vibration for quieter operation.

• Easy to verify leak-free unit by checking for the nitrogen holding charge with the
Schrader valve on the discharge or suction service valve.

• Encapsulated, automatic reset, high pressure control, and an adjustable low
pressure control with exible refrigerant hose to reduce possibility for leaks.

• A helix tube in tube water-cooled condenser is standard with refrigerant counter
ow for optimum condensing unit eciency.

• Every unit is put into a vacuum and subjected to a rigorous leak test. This results
in a clean, dry and leak free unit every time.

• Electrical circuits are factory tested for functional integrity.

• Every unit is run tested and cycled on both the high and low pressure controls.

Option

• Sight glass (optional) is easily viewable from the front to monitor the refrigerant
charge.

• Factory-installed suction lter available as option for additional system protection.

3

APPLICATION DATA - HWN & ZWN

Installation Precautions

All units are factory charged with dry nitrogen which must be evacuated prior to installation.

Water valves must be adjusted during initial start-up to design condensing pressure for the selected refrigerant.

HW “X6” models with RS compressors are not suitable for R-507.

Retrot Installations

If a P.O.E. model is used in a retrot, the old mineral oil must be completely removed from the system or at least
reduced to no more than 5% of the total oil charge. Polyolester oil is very hygroscopic. Take extra precautions to
limit exposure to the atmosphere.

Leveling Units

Unit must be level to insure proper oil return to the compressor.

Condenser Water Temperature

Maximum leaving water temperature is 105°F on all models.

Condenser Water Treatment

The use of untreated or improperly treated water may result in scaling
premature erosion or corrosion. A qualied water treatment specialist is
recommended for proper results.

Engineering Aids

Total Heat of Rejection (THR) all units:

THR = BTUH + (KW x 1000 x 3.4 x 1.0)

Water Temperature Rise (∆Tw) through

water cooled condenser:

∆Tw = THR ÷ (GPM x 60 x 8.4)

Hermetic

Compressor

Large

Receiver

Coaxial

Condenser

High & Low

Pressure Controls

Spacious

Control Box

Refrigerant

Isolation Service

Valves (2)

4

SPECIFICATIONS & OPTIONS  HWN & ZWN

Features & Specications HW ZW

Compressor mounting (rubber grommets) Standard Standard
Compressor discharge service valve (in line brass base valve) Standard Standard
Compressor suction service valve - rotolock Standard Standard
Large capacity refrigerant receiver (up to 100 ft. runs) Standard Standard
Receiver service valve (located on outlet) Standard Standard
Coaxial condenser (counterow tube in tube) Standard Standard
Extra large electric box (encloses all options and capacitors) Standard Standard
Electric conduit (UL recognized, high impact, ame retardant copolymer) Standard Standard
Low pressure control switch (adjustable) Standard Standard
High pressure encapsulated safety switch (xed) Standard Standard
Super hose on low pressure control (higher leak resistance) Standard Standard
Voltage 208-230 - 1ph - 60hz Standard Standard
Voltage 208-230 -3ph - 60hz Standard Standard
Voltage 460 - 3ph - 60hz Standard Standard
Pump down control switch (pre-wired) Standard Standard
Water valve (mounted on condenser inlet) Standard Standard
Agency approvals UL, ULC, N.Y., MEA 106-98-E Standard Standard

Electrical Options HW ZW

Air defrost timer Option Option
Electric defrost timer Option Option
Electric defrost timer with contactor Option Option
Compressor crankcase heater¹ Option Option
Beacon II™ Control Option Option

Mechanical Options HW ZW

Liquid line drier & sight glass assembly (sweat)² Option Option
Liquid line solenoid valve (230V coil) Option Option
Suction lter with bypass Option Option
Suction accumulator Option Option
Suction accumulator & lter Option Option
Two-tiered stacking rack for eld assembly Option Option

¹ Crankcase heaters are not required for indoor operation but are included in all HW models. Field wiring is required. ZW models crankcase
heaters are not available.
² Required on ZW “L6” models

The Beacon II system is a pre-assembled, factory installed refrigeration system
featuring an intregrated microcomputer-based electronic control board. System
orders (including matching unit coolers) are now available for all HW & ZW models.

The Beacon II system replaces the expansion valve, solenoid valve, room thermostat,
defrost control timer. It comes factory preset thereby eliminating all of the expensive and time consuming
ne tuning and adjustments necessary for a good system installation. For additional information, see the Beacon II
bulletin or contact your local Sales Representative.

5

PERFORMANCE DATA  HWN MODELS

High Temperature Models - R-404A

Model

HWN005H6 RST45C1E

HWN009H6 RST64C1E

HWN010H6 RST70C1E

HWN015H6 CS10K6E

HWN025H6 CS14K6E

HWN032H6 CS20K6E

HWN040H6 CS27K6E

HWN050H6 CS33K6E

Compressor

Suction Temperature °F

35°F 40°F

BTU/H 7,370 8,160

GPM 1.3 1.5

PSI 1.0 1.2

BTU/H 11,190 12,310

GPM 1.8 2.1

PSI 2.1 2.6

BTU/H 12,430 13,900

GPM 2.0 2.3

PSI 2.3 2.9

BTU/H 18,510 20,830

GPM 3.3 3.9

PSI 1.6 2.2

BTU/H 25,060 27,910

GPM 4.8 5.7

PSI 3.2 4.2

BTU/H 36,490 40,790

GPM 5.6 6.8

PSI 2.7 3.7

BTU/H 48,220 53,600

GPM 10.3 12.8

PSI 7.5 11.3

BTU/H 53,250 59,150

GPM 8.7 10.3

PSI 2.8 3.8

Capacity ratings conditions: 85°F entering water, 110°F condensing, 25°F ITD, 0°F subcooling

High Temperature Models - R-407C

Model

HWN005H6 RST45C1E

HWN009H6 RST64C1E

HWN010H6 RST70C1E

Capacity ratings conditions: 85°F entering water, 110°F condensing, 25°F ITD, 0°F subcooling

Compressor

BTU/H 7,160 8,050

GPM 3.6 4.6

PSI 4.9 7.0

BTU/H 11,320 12,720

GPM 4.9 5.9

PSI 10.0 13.1

BTU/H 11,400 12,760

GPM 4.8 5.7

PSI 9.7 12.5

Suction Temperature °F

35°F 40°F

6

PERFORMANCE DATA  HWN MODELS

Low Temperature Models - R-404A

Model

HWN011L6 CF04K6E

HWN014L6 CF06K6E

HWN025L6 CF09K6E

HWN031L6 CF12K6E

Capacity ratings conditions: 85°F entering water, 105°F condensing, 20°F ITD, 0°F subcooling. (ITD = Condensing temperature - entering condenser water temperature)

BTUH = British Thermal Units (All capacities are rated at 60 Hz operation)
GPM = Gallons per Minute (Water flow rate)
PSI = Pounds per Square Inch (Water pressure drop through condenser)

Compressor

-30 °F 25°F 20°F 10°F 0°F 10°F

BTUH 2,080 2,810 3,570 5,310 7,590 10,680

GPM 0.5 0.7 1.0 1.6 3.0 6.0

PSI 0.2 0.4 0.6 1.4 3.7 7.4

BTUH 3,770 4,810 5,990 8,700 11,780 15,070

GPM 1.0 1.3 1.5 2.5 4.0 5.0

PSI 0.8 1.2 1.5 3.4 7.4 8.0

BTUH 5,560 7,040 8,720 12,590 17,060 21,970

GPM 1.0 1.5 2.0 3.5 5.8 8.5

PSI 0.2 0.6 0.8 2.0 4.4 8.5

BTUH 7,550 9,510 11,570 16,060 21,180 27,140

GPM 1.25 2.5 3.4 5.75 9.5 11.0

PSI 0.6 1.2 1.9 4.4 9.8 12.0

Extended Temperature Models - R-404A

Model

HWN005X6 RST45C1E

HWN008X6 RST55C1E

HWN009X6 RST64C1E

HWN010X6 RST70C1E

HWN015X6 CS10K6E

HWN020X6 CS12K6E

HWN025X6 CS14K6E

HWN030X6 CS18K6E

HWN032X6 CS20K6E

HWN040X6 CS27K6E

HWN050X6 CS33K6E

Capacity ratings conditions: 85°F entering water, 105°F condensing, 20°F ITD, 0°F subcooling. (ITD = Condensing temperature - entering condenser water temperature)

BTUH = British Thermal Units (All capacities are rated at 60 Hz operation)
GPM = Gallons per Minute (Water flow rate)
PSI = Pounds per Square Inch (Water pressure drop through condenser)

Compressor

25°F 20°F 10°F 0°F 10°F 20°F 30°F

BTUH 1,280 1,665 2,460 3,290 4,220 5,270 6,480

GPM 0.2 0.2 0.4 0.7 0.9 1.2 1.6

PSI 0.2 0.2 0.2 0.3 0.5 0.9 1.4

BTUH 2,060 2,340 3,070 4,010 5,140 6,460 7,950

GPM 0.4 0.5 0.7 1.0 1.4 1.9 2.6

PSI 0.2 0.3 0.4 0.6 1.1 1.7 3.0

BTUH 2,480 2,880 3,820 4,970 6,320 7,870 9,620

GPM 0.2 0.2 0.5 0.9 1.4 1.8 2.4

PSI 0.2 0.2 0.3 0.7 1.3 2.1 3.2

BTUH 1,600 2,335 3,770 5,200 6,800 8,700 11,200

GPM 0.3 0.3 0.4 1.1 1.5 1.8 2.7

PSI 0.3 0.3 0.3 0.9 1.5 2.1 3.9

BTUH 2,000 2,815 4,580 6,930 9,710 12,900 16,300

GPM 0.6 0.8 1.0 1.5 2.3 3.3 4.8

PSI 0.2 0.3 0.4 0.5 0.9 1.6 3.1

BTUH 2,650 3,615 5,670 8,340 11,490 15,100 19,200

GPM 0.8 0.9 1.6 1.8 2.8 4.3 6.6

PSI 0.4 0.4 0.5 0.6 1.2 2.6 4.3

BTUH 3,840 4,900 7,160 10,140 13,630 17,500 21,800

GPM 0.2 0.5 1.1 1.8 3.2 4.7 7.2

PSI 0.1 0.2 0.5 0.8 1.7 4.2 6.6

BTUH 4,590 5,825 8,570 12,600 17,400 22,700 28,300

GPM 0.5 0.9 1.5 2.9 4.9 8.0 10.5

PSI 0.2 0.4 0.6 1.4 3.3 8.0 10.4

BTUH 4,650 6,505 10,110 14,210 19,220 25,600 34,000

GPM 0.5 0.8 1.3 1.8 2.6 5.0 9.5

PSI 0.2 0.4 0.6 0.8 1.1 2.2 6.6

BTUH 6,819 8,628 12,406 17,547 23,901 31,622 40,740

GPM 0.8 1.3 1.8 2.7 5.5 10.8 15

PSI 0.4 0.6 0.8 1.2 2.6 8.1 13.6

BTUH 8,100 10,515 15,433 21,505 28,838 37,733 48,684

GPM 1.3 2.1 3.1 4.5 6.2 9.0 13.6

PSI 0.1 0.1 0.7 1.0 1.6 3.0 6.2

Suction Temperature °F

Suction Temperature °F

7

PERFORMANCE DATA  HWN MODELS

Extended Temperature Models- R-407C

Model

HWN005X6 RST45C1E

HWN008X6 RST55C1E

HWN009X6 RST64C1E

HWN010X6 RST70C1E

Capacity ratings conditions: 85°F entering water, 105°F condensing, 20°F ITD, 0°F subcooling.

Compressor

25°F 20°F 10°F 0°F 10°F 20°F 30°F

BTUH 1,650 1,780 2,220 2,920 3,890 5,120 6,630

GPM 0.3 0.4 0.6 0.9 1.3 1.8 2.8

PSI 0.1 0.2 0.3 0.5 0.9 1.6 3.4

BTUH 1,300 1,690 2,560 3,570 4,780 6,240 8,010

GPM 0.2 0.4 0.8 1.2 1.7 2.7 4.8

PSI 0 0.2 0.4 0.8 1.5 3.1 7.3

BTUH 1,710 2,220 3,350 4,670 6,260 8,170 10,490

GPM 0.5 0.5 0.6 1.2 1.9 2.7 4.1

PSI 0.25 0.3 0.3 1.1 2.1 3.8 7.8

BTUH 1,310 2,010 3,400 4,850 6,460 8,340 10,590

GPM 0.5 0.5 0.7 1.3 1.9 2.7 4.1

PSI 0.4 0.4 0.4 1.2 2.3 3.8 7.6

Suction Temperature °F

Extended Temperature Models - R-448A/R-449A

Model

HWN005X6 RST45C1E

HWN008X6 RST55C1E

HWN009X6 RST64C1E

HWN010X6 RST70C1E

Capacity ratings conditions: 85°F entering water, 105°F condensing, 20°F ITD, 0°F subcooling.

Compressor

25°F 20°F 10°F 0°F 10°F 20°F 30°F

BTUH - - 2,170 2,970 3,990 5,270 6,850

GPM - - 0.6 0.9 1.3 1.9 3.3

PSI - - 0.3 0.5 1.0 1.8 4.3

BTUH - - 2,820 3,740 5,040 6,690 8,700

GPM - - 0.9 1.3 1.9 3.5 8.9

PSI - - 0.5 1.0 1.8 4.8 16.8

BTUH - - 3,590 4,820 6,440 8,440 10,820

GPM - - 0.9 1.4 2.1 3.0 4.8

PSI - - 0.7 1.4 2.6 4.6 10.2

BTUH - - 3,710 5,060 6,610 8,380 10,390

GPM - - 0.9 1.4 2.0 2.8 4.1

PSI - - 0.6 1.4 2.5 4.1 7.6

Suction Temperature °F

8

UNIT SPECIFICATIONS  HWN MODELS

Connections (in.)

Receiver
90% Full

Lbs.

Model

Compressor

Water InWater

Suction Liquid

(ODS) (ODS) (FPT) (MPT) D W H

Out

High Temperature Models

HWN005H6 RST45C1E 1/2 3/8 1/2 1/2 5.5 22 14 17 98

HWN009H6 RST64C1E 5/8 3/8 1/2 1/2 5.5 22 14 17 103

HWN010H6 RST70C1E 5/8 3/8 1/2 1/2 5.5 22 14 17 107

HWN015H6 CS10K6E 5/8 3/8 1/2 1/2 9.0 27 22 21 148

HWN025H6 CS14K6E 7/8 3/8 1/2 1/2 9.0 27 22 21 152

HWN032H6 CS20K6E 7/8 1/2 1/2 1/2 20.0 27 22 28 182

HWN040H6 CS27K6E 7/8 1/2 1/2 1/2 20.0 29 25 28 183

HWN050H6 CS33K6E 7/8 1/2 1/2 1/2 20.0 29 25 28 207

Extended Temperature Models

HWN005X6 RST45C1E 1/2 3/8 1/2 1/2 5.5 22 14 17 98

HWN008X6 RST55C1E 1/2 3/8 1/2 1/2 5.5 22 14 17 98

HWN009X6 RST64C1E 5/8 3/8 1/2 1/2 5.5 22 14 17 103

HWN010X6 RST70C1E 5/8 3/8 1/2 1/2 5.5 22 14 17 107

HWN015X6 CS10K6E 5/8 3/8 1/2 1/2 9 27 22 21 148

HWN020X6 CS12K6E 7/8 3/8 1/2 1/2 9 27 22 21 148

HWN025X6 CS14K6E 7/8 3/8 1/2 1/2 9 27 22 21 152

HWN030X6 CS18K6E 7/8 1/2 1/2 1/2 20 27 22 28 172

HWN032X6 CS20K6E 7/8 1/2 1/2 1/2 20 27 22 28 182

HWN040X6 CS27K6E 7/8 1/2 1/2 1/2 20 29 25 28 183

HWN050X6 CS33K6E 7/8 1/2 1/2 1/2 20 29 25 28 207

Low Temperature Models

HWN011L6 CF04K6E 5/8 3/8 1/2 1/2 9 27 22 21 114

HWN014L6 CF06K6E 5/8 3/8 1/2 1/2 9 27 22 21 114

HWN025L6 CF09K6E 5/8 3/8 1/2 1/2 9 27 22 21 120

HWN031L6 CF12K6E 7/8 1/2 1/2 1/2 20 27 22 21 136

Dimensions (in.)

Net
Wt.

(lbs.)

ODS = Outside Diameter Sweat
FPT = Female Pipe Thread
MPT = Male Pipe Thread

H

D

W

9