Bohn DFT-005 Service Manual

DIRECT DRIVE FLUID COOLERS

Technical Guide

Models DFT and BFH

BNFCTB

April 2007

(Replaces 10108.1, 06/02)

Table of Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Direct-Drive Design Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Selection Formulas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Given Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Correction Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Model DFT Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Model DFT Specications and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Model BFH Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13

Model BFH Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Model BFH Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2

Overview

Our engineers have carefully selected and matched components to provide excellent performance, long service life and a wide range of performance selections. Specically engineered for outdoor installations, the DFT and BFH uid coolers are constructed of aluminum and heavy gauge galvanized steel to resist corrosion in all climates.

Fluid coolers are available in a wide range of sizes. Each model is available with several circuit options to ensure the exact uid cooler for your requirements. Our uid coolers are designed to reduce the cost of time required for installation. Each unit is completely assembled and tested at the factory. All motor leads are wired to a junction box providing a single point for eld wiring.

Direct-Drive Design Features

• Cabinets are heavy-duty construction and designed for outdoor

applications; tube sheets and all structural members are fabricated from galvanized steel

• Cabinet panels are fabricated from heavy-gauge aluminum for an attractive appearance and corrosion protection

• Coils are fabricated with corrugated aluminum ns with staggered copper tubes for optimum heat transfer; all units are pressure-tested, dehydrated and pressurized prior to shipment

• Alternate coil constructions are available — copper ns, BohnGuard™ ns and coated coils

• BFH models incorporate the Floating Tube™ coil design that reduces the possibility of tube sheet leaks

• DFT models available in either horizontal or vertical air ow; BFH models available in vertical air ow only

• Fully baed fan sections provide structural strength and prevent fan wind-milling in the o cycle

• Energy ecient fan motors with direct-drive fans available at 1140 RPM; fan motors have thermal overload

protection and permanently lubricated ball bearings

• DFT models are available in 208-230 V single-phase, 208-230/460 dual-voltage, three-phase or 575 V three-phase motors; BFH models are available in 208-230/460 dual voltage, three-phase or 575 V three-phase motors

• Statically and dynamically balanced fan blades are aluminum and riveted to painted steel spider and hubs

• Fan guards are PVC coated steel for optimum corrosion protection

• All fan motor leads are wired to a weatherproof electrical enclosure for single-point eld wiring

• Fan cycling controls are available that cycle all fans in response to BFH only; DFT fan cycling is ambient air

• All controls are factory mounted and wired; control circuit voltage is 230 V standard, 24 and 115 V controls are

also available

Dramatically Reduces Tube Sheet Leaks

The Floating Tube™ Coil Design

• A wide selection of circuit options maximizes performance at minimal cost

• Sizes available from 10 GPM through 500 GPM

• Units are UL listed for US and Canada

3

Selection Procedure

Selection Formulas

Design Capacity = GPM x (Entering Fluid Temperature - Leaving Fluid Temperature) x Fluid Constant, Table 1

Average Fluid Temperature = (Entering Fluid Temperature + Leaving Fluid Temperature)/2

Initial Temperature Dierence, I TD = Entering Fluid Temperature - Entering Air Temperature

Base Capacity = Design Capacity/(1,000 x ITD x Capacity Correction, Table 2 x Altitude Correction Factor, Table 3)

Pressure Drop, Fluid = Pressure Drop, Catalog x Correction Factor, Table 4

Given Conditions

Direct Drive 120˚F Leaving Fluid Temperature 50 GPM 100˚F Entering Air Temperature 20% Ethylene glycol solution 20 feet maximum uid pressure drop 130˚F Entering Fluid Temperature 1,000 feet altitude

Solution

1. Calculate design capacity. From Table 1, select the uid constant for 20% of 484.

Design Capacity = 50 x (130-120) x 484

Design Capacity = 242,000 BTUH

2. Calculate average uid temperature

= (130 +120)/2

= 125˚F

3. Calculate the initial temperature dierence, ITD

ITD = 130 - 100

ITD = 30˚F

4. Calculate Base capacity. From Table 2, for a 20% solution and an average uid temperature of 125˚ F, interpolate to obtain a correction factor of 1.035. From Table 3, obtain an attitude correction factor at 1000 feet of 0.98.

Base Capacity = 242,000/(1,000 x 30 x 1.035 x 0.98)

Base Capacity = 7.95 MBH / ˚TD

4

Correction Factors

5. Select the model and circuiting required. From the capacity tables, locate the GPM you desire and read down

until you nd a base capacity equal to or greater than your calculated base capacity. Read horizontally to the left to obtain the model and circuiting (Feeds) for your application.

The selection is a DFT 16, with 32 feeds, with a base capacity of 8.34 MBH/1˚ TD and a uid loss of 15.1 feet

of water.

6. Calculate the pressure drop of the uid. From Table 4, using 20% glycol solution and a 125˚F average uid

temperature, interpolate to get a correction factor of 0.86.

Actual Fluid Loss = 15.1 x 0.86

Actual Fluid Loss = 13.0 feet of water

Table 1. Fluid Constraints

Percent

Glycol

Fluid

Constant

0 500 10 493 20 484 30 470 40 453 50 435

Table 3. Altitude Correction Factor

Altitude

(Feet)

Correction

Factor

0 1.00 1,000 0.98 2,000 0.95 3,000 0.93 4,000 0.90 5,000 0.88 6,000 0.85 7,000 0.83

Table 2. Capacity Correction Factor

Percent

Glycol

0 0.97 1.01 1.03 1.05 1.07

10 0.96 1.00 1.02 1.04 1.06

20 0.94 0.98 1.00 1.02 1.04

30 0.92 0.96 0.98 1.00 1.02

40 0.90 0.94 0.96 0.98 1.00

50 0.87 0.91 0.94 0.96 0.98

Note: For average uid temperature less than 50˚F or greater than 130˚F, consult the factory

Average Fluid Temperature ˚F

50 70 90 110 130

Table 4. Correction Factor for Fluid Loss

Percent

Average Fluid Temperature ˚F

Ethylene

Glycol

50 70 90 110 130

0 0.88 0.82 0.78 0.75 0.71 10 0.97 0.90 0.86 0.82 0.78 20 1.05 0.98 0.94 0.89 0.85 30 1.15 1.07 1.02 0.98 0.93 40 1.24 1.15 1.10 1.05 1.00 50 1.33 1.23 1.18 1.12 1.07

5

Capacity Ratings

Table 5. Capacity Ratings MBH / oTD, 40% Ethylene Glycol at 130oF Average Fluid Temperature

GPM

Model Feeds

DFT 005

8 12 16 12

DFT

Model DFT

008

16 21 32

DFT 010

DFT 012

DFT 014

DFT 016

DFT 021

DFT 023

DFT 026

* PD is glycol uid loss in feet of water at 130˚F uid temperature

12 16 24 12 16 24 12 16 24 12 21 32 16 24 48 24 48 21 32 64

10 15 20 25 30 40 50 60

MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD*

2.36

14.0

2.71

28.7

2.23

3.07 7.4 3.67

3.46 7.5 4.32

3.62 7.5 4.62

3.92 9.4 5.12

4.7

2.58

2.47

3.55

4.16

4.45

4.96

9.7

2.80

4.5

2.70

15.1

4.04

7.0

3.92

3.79

15.5

4.88

7.1

4.73

4.46

15.5

5.30

7.1

5.12

4.81

19.3

8.9 5.78

5.49

16.1

7.5

25.2

11.6

5.6

25.7

11.9

4.0

25.7

11.9

4.0

14.7

5.0

2.95

24.0

2.85

11.2 2.97 15.5

4.17

17.3

4.05

5.13

4.86

5.61

5.30

6.39

6.08

8.4

17.6

6.0

17.6

6.0

21.9

7.4 6.53 10.2 7.19 16.9 7.64 25.2

4.35

4.24

4.02

5.42

5.17

5.99

5.68

23.8

11.5

3.8

4.49

4.30

19.2

6.4

24.3

8.3 5.60 13.8 5.89 20.4 6.10 28.2

24.3

8.3 6.23 13.8 6.60 20.4 6.88 28.2

4.17 12.4 5.57 25.4

7.27 9.2 8.44

5.93 12.3 7.22

6.93

6.99 6.8 7.98 10.2 8.78 14.0 9.96

7.65 12.9 8.81

20.5

6.8 7.90 10.2 8.68 14.0 9.83

6.57

8.44

13.7

4.4

19.1

6.1

9.43

7.09

9.73

9.33

18.9

6.1 7.84 10.2 8.34 15.1 8.70 20.9

23.3

8.97

3.7 9.78 5.5 10.41 7.5

23.3

9.25

3.7 10.14 5.5 10.82 7.5

26.3

8.4 10.66 14.0 11.58

4.66

4.49

10.63

28.5

9.4 4.62 13.0

20.8

3.3

12.25

11.33

28.7

4.5

Table 6. Capacity Ratings MBH / ˚TD, 40% Ethylene Glycol at 130˚F Average Fluid Temperature

GPM

Model Feeds

DFT

48 10.89 9.9 11.29 12.6 11.61 15.5 11.88 18.6 12.12 22.1 12.31 25.7

021

DFT

48 11.36 9.9 11.80 12.6 12.16 15.5 12.46 18.6 12.72 22.1 12.94 25.7

023

DFT

64 11.88 6.0 12.33 7.5 12.69 9.3 12.98 11.2 13.24 13.3 13.46 15.5 13.64 17.8 13.81 20.3 13.95 23.0 14.08 25.7

026

* PD is glycol uid loss in feet of water at 130˚F uid temperature

70 80 90 100 110 120 130 140 150 160

MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD*

Table 7. Model DFT Connection Sizes, based on the number of feeds

Feeds Inlet/Outlet

8 1-1/8” ODS

12 1-3/8” ODS

16 1-3/8” ODS

21 1-5/8” ODS

Feeds Inlet/Outlet

24 2-1/8” ODS

32 2-1/8” ODS

48 2-5/8” ODS

64 2-5/8” ODS

6

Specications and Dimensions

Diagram 1. Model DFT Dimensions, 5 through 26 Tons with Vertical Air Flow

Diagram 2. Model DFT Dimensions, 5 through 26 Tons with Horizontal Air Flow

Model DFT

Table 8. Model DFT Specications

Dimensions

Model

DFT005

DFT008

DFT010

DFT012

DFT014

DFT016

DFT021

DFT023

DFT026

1

Motor voltage 208-230/1/60; 1075 RPM

2

Motor voltage 208-230-460/3/60; 1140 RPM

(in.)

A B No. Dia. HP1FLA1HP

39-3/4

49-3/4

69-3/4

89-3/4

129-3/4

120

30

40

60

80

CFM

5,050

6,450

10,100

12,400

13,700

12,900

20,500

19,900

19,400

Fan Motor Data

1

24

1/3

1

26

1/2

2

24

1/3

2

26

1/2

2

26

1/2

2

26

1/2

3

26

1/2

3

26

1/2

3

26

1/2

3.4

3.9

6.8

7.8

11.7

1/3

Approx.

Net Wt.

2

FLA

2.6/1.3

5.2/2.6

7.8/3.9

2

(Lbs.)

205

260

330

348

420

436

565

580

610

7

Capacity Ratings

Table 9. Capacity Ratings MBH / ˚TD, 40% Ethylene Glycol at 130˚F Average Fluid Temperature

Model Feeds

BFH

0231428

BFH

027

BFH

031

BFH

035

BFH

041

BFH

Model BFH

045

BFH

046

BFH

049

* PD is glycol uid loss in feet of water at 130˚F uid temperature

Fan

Cong.

1 x 2

14 21421 x 2

18 28561 x 2

14 21421 x 3

18 28562 x 2

18 28561 x 3

20 30 40 50 60 70 80 90 100

MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD*

6.4 3.2 8.04 6.5 9.18

8.08

7.01 4.8 8.85

7.42 4.8 9.56

8.19 7.0 10.99

9.9

10.1

8.39

3.2

9.60

9.9

11.04

9.02

3.2

10.45

10.2 6.6 11.88

11.2

14.3

13.04

10.54

4.6

12.52

11.62

14.3

14.03

11.15

4.6

13.43

11.24 6.6 13.63

12.8

11.92 9.5 14.49

13.85

10.8

10.01

16.1

10.64

1.5

8.9

2.3

9.55

16.5

10.99

24.4

5.3

10.49

16.5

5.3

11.51

11.0

13.08

3.2

12.38

23.8

7.7 14.02 11.4 15.19

23.8

7.7 15.21 11.4 16.61

11.0

15.54

3.2

15.9

16.45

4.6

15.73

7.9 11.17

10.06

12.1

24.4

7.9 12.32

10.99

16.3

13.98

4.7

13.29

13.83

14.99

16.3

17.08

14.6

4.7

16.08

23.5

6.9 17.22 9.5 18.41 12.4 19.37

GPM

22.2

3.1 10.07 4.1 10.51 5.2 10.87 6.4 11.18 7.8

10.8

11.7

14.2

12.13

18.0

12.48

22.2

1.5

10.62

2.0

10.8

1.5

22.5

6.5

15.8

2.3

15.8

2.3

22.5

6.5

12.95

11.64

14.66

13.99

16.13

14.76

17.74

16.09

18.35

17.31

11.08

14.2

13.47

2.0

12.19

29.5

8.6 14.55

13.16

20.7

16.90

3.0

15.54

20.7

18.66

3.0

17.01

29.5

8.6 18.35

16.17

17.69

2.6

11.47

3.1 11.8 3.8

18.0

13.89

22.2

2.6

12.65

3.1 13.05 3.8

10.8

15.01

13.4

15.39

1.5

13.67

1.9

14.1

26.2

3.7 16.19 4.6 16.76 5.6

26.2

3.7 17.79 4.6 18.46 5.6

10.8

19.24

13.4

20.01

1.5

17.04

1.9

17.81

15.8

20.18

19.4

20.85

2.3

18.51

2.8

19.22

16.1

2.3

16.1

2.3

23.4

3.3

8

Capacity Ratings

Table 10. Capacity Ratings MBH / ˚TD, 40% Ethylene Glycol at 130˚F Average Fluid Temperature

Model Feeds

BFH

0542842

BFH

053

BFH

0602842

BFH

0612142

BFH

0663656

BFH

065

BFH

0703656

BFH

071

BFH

0752142

BFH

079

BFH

0802842

BFH

0862842

BFH

0902842

BFH

089

BFH

0972856

BFH

0983656

BFH

1072856

* PD is glycol uid loss in feet of water at 130˚F uid temperature

Fan

Cong.

2 x 2

14 21421 x 4

2 x 2

1 x 4

2 x 2

18 28561 x 4

2 x 2

18 28561 x 4

1 x 5

18 28561 x 5

2 x 3

18 28561 x 5

1 x 6

2 x 3

1 x 6

20 30 40 50 60 70 80 90 100

MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD*

14.03 4.8 16.06 7.2 17.70

8.71 9.2 12.20

18.4

11.86

6.1 14.50 10.1 16.62 15.0 18.32

14.84 4.8 17.18 7.2 19.12

12.34 6.1 15.34 10.1 17.80 15.0 19.81

12.88 12.5 16.23

13.04 12.5 16.53

12.97 7.5 16.52 12.5 19.56 18.5 22.14

13.20 15.4 16.90

13.40 15.4 17.39

20.7

15.71

6.1 18.31 9.0 20.44 12.4 22.21 16.3 23.68

20.7

16.01

6.1 18.76 9.0 21.04 12.4 22.93 16.3 24.50

25.6

16.51

7.5 19.53 11.1 22.08 15.4 24.23 20.2 26.06

16.38 7.0 19.38 10.4 21.97

16.69 7.0 19.89 10.4 22.67

16.93 7.0 20.29 10.4 23.23

2.56

17.03

7.5 20.38 11.1 23.27 15.4 25.75 20.2 27.87

17.22 8.9 20.70 13.3 23.74 18.3 26.38 24.1

17.59 8.9 21.37 13.3 24.76 18.3 27.76 24.1

GPM

9.9

19.06

13.0

20.19

16.78

3.2

18.10

4.2

19.21

20.7

19.71

27.1

16.85

3.0

18.18

3.9 19.30 4.9 20.27 6.1 21.10 7.3

9.9

20.73

13.0

22.09

18.05

3.2

19.60

4.2

20.92

20.7

21.47

27.2

18.12

3.0

19.68

3.9 21.01 4.9 22.15 6.1 23.14 7.4

17.77 4.8 19.84 6.6 21.55 8.7 22.99

21.71

21.80

18.21 4.8 20.41 6.6 22.24 8.7 23.78

22.41

22.50

25.6

20.53

3.7 22.54 4.9 24.28 6.1 25.80 7.6 27.13 9.1

24.27

14.3

24.18

18.8

26.08

21.09

4.6

23.21

6.1

25.04

14.3

25.07

18.8

27.16

21.76

4.6

24.04

6.1

26.03

14.3

25.81

18.8

28.05

22.30

4.6

24.73

6.1

26.86

25.84

26.92 4.4 28.78 5.4 30.43 6.5

20.73 6.9 23.84 9.5 26.58 12.5 28.97

27.70

28.48 4.4 30.61 5.4 32.50 6.5

16.5

21.15

20.3

21.97

24.4

5.3

20.16

16.5

23.24

5.3

22.05

11.0

24.21

3.2

22.90

20.7

24.91

3.0

23.00

11.0

25.08

3.2

23.68

20.7

25.82

3.0

23.78

25.6

3.7 25.76 4.5 27.06 5.5

23.8

27.73

7.7

26.64

23.8

28.97

7.7

27.78

23.8

30.01

7.7

28.74

25.6

3.7 27.55 4.5 29.04 5.5

15.9

31.07

4.6

29.70

6.5

20.99

20.3

24.22

24.4

6.5

23.03

13.5

25.25

16.3

3.9

23.94

25.5

3.7 24.04 4.4

13.5

26.19

16.3

3.9

24.78

25.5

3.7 24.88 4.4

29.4

9.5 28.05 11.4

29.4

9.5 29.32 11.4

29.4

9.5 30.41 11.4

19.5

32.91

23.5

5.7

31.46

7.9

Model BFH

4.7

6.9

9

Capacity Ratings

Table 11. Capacity Ratings MBH / ˚TD, 40% Ethylene Glycol at 130˚F Average Fluid Temperature

Fan

Model Feeds

BFH

1062842

BFH

1202842

BFH

1323656

BFH

1403656

BFH

152

BFH

1623656

BFH

1683656

Model BFH

BFH

178

BFH

194

BFH

202

BFH

212

* PD is glycol uid loss in feet of water at 130˚F uid temperature

42

56

Con-

g.

2 x 4

2 x 5

2 x 6

20 30 40 50 60 70 80 90 100

MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD*

17.42 9.2 21.10 13.6 24.41

17.74 9.2 21.70 13.6 25.35

GPM

18.7

27.35

24.6

23.71

6.1

26.51

8.0 29.01 10.1 31.24 12.4 33.23 15.0

18.7

28.68

24.6

24.67

6.1

27.83

8.0 30.68 10.1 33.26 12.4 35.60 15.0

21.96 9.0 25.77 12.5 29.27 16.4 32.45

31.41

22.13 9.0 26.06 12.5 29.71 16.4 33.07

32.02

25.94 7.5 29.62 9.9 33.03 12.5 36.20 15.4 39.11 18.5

22.33 11.2 26.41 15.4 30.24 20.2 33.81

33.03

22.45 11.2 26.64 15.4 30.62 20.2 34.62

33.61

34.06 7.5 37.53 9.2 40.76 11.1

34.44 8.9 38.03 11.0 41.39 13.3

34.86 8.9 38.61 11.0 42.15 13.3

35.17 8.9 39.05 11.0 42.74 13.3

20.7

35.34

25.6

37.94

30.8

6.1

34.14

7.5

36.61

9.0

20.7

36.12

25.6

6.1

34.90

7.5 37.52 9.0

25.6

7.5 36.17 9.2 39.06 11.1

25.6

7.5 36.92 9.2 40.00 11.1

10

Capacity Ratings

Table 12. Capacity Ratings MBH / ˚TD, 40% Ethylene Glycol at 130˚F Average Fluid Temperature

Model Feeds

Fan

Cong.

120 140 160 180 200 220 240 260 280

MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD*

GPM

BFH023

BFH027

BFH

28 1 x 2 11.69 10.7

42 1 x 2 12.33 5.2 12.74 6.9 13.07 8.7 13.34 10.7

031 42 1 x 2 13.68 5.2 14.17 6.9 14.57 8.7 14.89 10.7

28

035

56

041 42 1 x 3 17.67 7.7 18.39 10.1 18.96 12.8 19.40 15.7

045 42 1 x 3 19.56 7.7 20.42 10.1 21.10 12.8 21.66 15.7

049 56 1 x 3 20.36 4.6 21.24 6.1 21.95 7.7 22.52 9.5 22.99 11.4 23.39 13.5 23.74 15.7

28

046

56

42

054

84

053 42 1 x 4 22.45 10.1 23.53 13.3 24.39 16.9 25.09 20.8

42

060

84

061 42 1 x 4 24.77 10.1 26.05 13.3 27.08 16.9 27.93 20.8

0663656

112

065 56 1 x 4 25.75 6.1 27.08 8.0 28.15 10.1 29.02 12.5 29.75 15.0 30.36 17.8 30.89 20.8

0703656

112

071 56 1 x 4 26.70 6.1 28.12 8.0 29.25 10.1 30.17 12.5 30.94 15.0 31.58 17.8 32.13 20.8

1 x 2

2 x 2

15.98

22.2

14.79

3.1 15.32 4.1 15.74 5.2 16.07 6.4 16.35 7.8 16.59 9.2 16.79 10.7

21.27

22.2

19.10

3.1 20.15 4.1 21.01 5.2 21.74 6.4 22.37 7.8 22.91 9.2 23.38 10.7

22.34

10.8

23.40

14.2

24.26

18.0

24.96

20.12

24.65

21.98

26.92

25.63

27.98

26.59

1.5

10.8

1.5

22.5

6.5

22.5

6.5

21.24

25.93

23.30

28.21

26.96

29.34

28.00

2.0

22.16

14.2

26.95

2.0

24.40

29.5

8.6 28.03

25.43

29.5

8.6 29.13

26.34

2.6

18.0

2.6

10.8

1.5

10.8

1.5

22.2

22.93

3.1 23.59 3.8 24.16 4.5 24.66 5.2 25.10 6.0 25.49 6.9

27.80

22.2

25.32

3.1 26.11 3.8 26.79 4.5 27.39 5.2 27.91 6.0 28.37 6.9

28.90

13.4

29.62

16.1

26.38

30.05

27.36

1.9

13.4

1.9

27.20

30.81

28.22

2.3

16.1

2.3

30.23

27.90

31.45

28.96

19.1

2.7

19.1

2.7

30.75

28.51

32.00

29.60

Model BFH

22.2

3.1 29.04 3.6 29.51 4.1

22.2

3.1 30.17 3.6 30.67 4.1

* PD is glycol uid loss in feet of water at 130˚F uid temperature

11

Capacity Ratings

Table 13. Capacity Ratings MBH / ˚TD, 40% Ethylene Glycol at 130˚F Average Fluid Temperature

42

56

Fan

Cong.

1 x 5

2 x 3

1 x 5

2 x 3

1 x 6

2 x 3

1 x 6

2 x 4

2 x 5

2 x 6

120 140 160 180 200 220 240 260 280

MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD* MBH PD*

29.34 12.6 31.09 16.5 32.52 20.9 33.69 25.8

29.21 7.6 30.92 9.9 32.30 12.6 33.44 15.5 34.39 18.7 35.20 22.1 35.89 25.8

30.40

15.8

32.27

20.7

27.66

2.3

29.52

3.0

31.91

15.8

33.98

20.7

28.91

2.3

30.94

3.0

31.52 7.6 33.49 9.9 35.06 12.6 36.36 15.5 37.43 18.7 38.34 22.1 39.12 25.8

33.21

15.8

35.47

20.7

29.98

2.3

32.17

3.0

33.19 9.0 35.40 11.9 37.20 15.0 38.69 18.5 39.95 22.3 41.02 26.4

34.43 9.5 36.81 12.4 38.75

35.68 9.0 38.23 11.9 40.31 15.0 42.02 18.5 43.45 22.3 44.66 26.4

36.64

20.7

39.42

27.1

33.71

3.0

36.37

3.9 38.62 4.9 40.54 6.1 42.20 7.3 43.64 8.7 44.92 10.1 46.05 11.7 47.06 13.3

39.62

20.7

42.95

27.1

36.24

3.0

39.36

3.9 42.02 4.9 44.30 6.1 46.28 7.3 48.01 8.7 49.54 10.1 50.89 11.7 52.10 13.3

40.89 12.4 44.42 16.3 47.35

42.08 12.4 45.85 16.3 49.00

44.27

25.6

41.05

3.7 45.08 4.9 48.56 6.1 51.59 7.6 54.25 9.1 56.59 10.8 58.66 12.6 60.51 14.5 62.17 16.5

44.16 15.4 48.47 20.2 52.13

45.46 15.4 50.11 20.2 54.07

46.55 15.4 51.50 20.2 55.74

47.47 18.3 52.75 24.1

48.61 18.3 54.26 24.1

49.52 18.3 55.52 24.1

Model Feeds

BFH

075

BFH

079

BFH

0804284

BFH

0864284

BFH

089

BFH

0904284

BFH

097

BFH

09856112

BFH

Model BFH

107

BFH

1064284

BFH

1204284

BFH

13256112

BFH

14056112

BFH

1524284

BFH

16256112

BFH

16856112

BFH

17856112

BFH

19456112

BFH

20256112

BFH

21256112

* PD is glycol uid loss in feet of water at 130˚F uid temperature

GPM

33.81

26.2

31.08

3.7 32.39 4.6 33.52 5.6 34.50 6.6 35.36 7.7 36.12 8.8 36.79 10.1

35.67

26.2

32.65

3.7 34.09 4.6 35.34 5.6 36.42 6.6 37.36 7.7 38.19 8.8 38.94 10.1

37.31

26.2

34.02

3.7 35.58 4.6 36.93 5.6 38.10 6.6 39.12 7.7 40.03 8.8 40.83 10.1

15.8

40.35

19.4

41.70

23.4

42.84

27.7

35.39

2.3

37.03

2.8

38.43

20.7

49.82

25.5

43.59

3.0

46.00

3.7 48.08 4.4 49.90 5.2 51.50 6.1 52.91 7.0 54.16 8.0

20.7

51.64

25.5

44.99

3.0

47.55

3.7 49.77 4.4 51.70 5.2 53.40 6.1 54.90 7.0 56.24 8.0

25.6

48.54

3.7 51.52 4.5 54.13 5.5 56.42 6.5 58.44 7.6 60.25 8.7 61.86 9.9

25.6

50.23

3.7 53.44 4.5 56.25 5.5 58.72 6.5 60.91 7.6 62.85 8.7 64.59 9.9

25.6

51.69

3.7 55.11 4.5 58.10 5.5 60.74 6.5 63.07 7.6 65.14 8.7 66.99 9.9

53.83 4.4 57.57 5.4 60.86 6.5 63.78 7.8 66.37 9.0 68.70 10.4 70.79 11.9

55.52 4.4 59.53 5.4 63.08 6.5 66.23 7.8 69.04 9.0 71.56 10.4 73.82 11.9

56.95 4.4 61.21 5.4 64.99 6.5 68.36 7.8 71.36 9.0 74.04 10.4 76.46 11.9

3.3

39.65

4.0 40.72 4.6 41.65 5.3 42.48 6.1

12

Capacity Ratings

Table 14. Capacity Ratings MBH / ˚TD, 40% Ethylene Glycol at 130˚F Average Fluid Temperature

Model Feeds

Fan

Cong.

300 350 400 450 500

MBH PD* MBH PD* MBH PD* MBH PD* MBH PD*

BFH054 84 2 x 2 25.83 7.8 26.56 10.2 BFH060 84 2 x 2 28.78 7.8 29.65 10.2 BFH066 112 2 x 2 29.94 4.7 30.82 6.1 31.50 7.8 32.06 9.6 32.53 11.5 BFH070 112 2 x 2 31.11 4.7 32.03 6.1 32.75 7.8 33.33 9.6 33.80 11.5 BFH080 84 2 x 3 37.40 11.4 38.66 15.0 BFH086 84 2 x 3 39.60 11.4 40.99 15.0 BFH090 84 2 x 3 41.55 11.4 43.06 15.0 BFH098 112 2 x 3 43.22 6.9 44.77 9.0 45.98 11.4 46.97 14.0 47.77 16.9 BFH106 84 2 x 4 47.96 15.0 49.87 19.8 BFH120 84 2 x 4 53.18 15.0 55.46 19.8 BFH132 112 2 x 4 55.29 9.0 57.63 11.9 59.50 15.0 61.00 18.5 62.24 22.3 BFH140 112 2 x 4 57.43 9.0 59.92 11.9 61.87 15.0 63.45 18.5 64.74 22.3 BFH152 84 2 x 5 63.67 18.7 66.82 24.5 BFH162 112 2 x 5 63.30 11.2 66.36 14.8 68.80 18.7 70.78 23.0 72.42 27.7 BFH168 112 2 x 5 66.15 11.2 69.43 14.8 72.04 18.7 74.16 23.0 75.91 27.7 BFH178 112 2 x 5 68.65 11.2 72.14 14.8 74.90 18.7 77.12 23.0 78.96 27.7 BFH194 112 2 x 6 72.69 13.4 76.69 17.6 79.90 22.3 82.52 27.5 84.70 33.1 BFH202 112 2 x 6 75.87 13.4 80.18 17.6 83.63 22.3 86.45 27.5 88.78 33.1 BFH212 112 2 x 6 78.64 13.4 83.24 17.6 86.90 22.3 89.87 27.5 92.33 33.1

* PD is glycol uid loss in feet of water at 130˚F uid temperature

GPM

Model BFH

Table 15. Model BFH Connection Sizes, based on number of feeds

Single Row of Fans

Feeds Inlet/Outlet

14 2-1/8” ODS 18 2-1/8” ODS 21 2-5/8” ODS 28 2-5/8” ODS 42 3-1/8” ODS 56 3-5/8” ODS

Double Row of Fans

Feeds Inlet/Outlet

18 2 @ 2-1/8” ODS 28 2 @ 2-1/8” ODS 36 2 @ 2-1/8” ODS 42 2 @ 2-5/8” ODS 56 2 @ 2-5/8” ODS 84 2 @ 3-1/8” ODS

112 2 @ 3-5/8” ODS

13

Dimensions

127”

20.25”

106” 112”

180”

20.25”

53” 53” 53”

165”

233”

20.25”

106”

218”

106”

286”

20.25”

53” 53” 53” 53” 53”

271”

339”

20.25”

53” 53” 53” 53” 53” 53”

324”

3,223 mm

515 mm

2,692 mm

2,845 mm

515 mm

4,572 mm

1,346 mm 1,346 mm1,346 mm

4,191 mm

1,346 mm 1,346 mm

1,346 mm

515 mm

1,346 mm 1,346 mm

1,346 mm

515 mm

2,692 mm

5,918 mm

5,537 mm

7,264 mm

6,883 mm

8,611 mm

8,230 mm

45.43”

42.43”

38.00”

49.13”

88”

85”

49.13”

80.50”

1,154 mm

1,008 mm

965 mm

1,248 mm

2,355 mm

2,159 mm

0.875” [22 mm] diameter mtg.

0.875” [22 mm] diameter mtg. holes typ.

2,045 mm

1,248 mm

Diagram 3. Model BFH Dimensions

End Views

Single

Row

Model BFH

Double

Row

Side Views

1 x 2 2 x 2

1 x 3 2 x 3

1 x 4 2 x 4

14

1 x 5 2 x 5

1 x 6 2 x 6

Specications

Table 16. Model BFH Specications

Model

BFH023 BFH027

BFH031 BFH035 BFH041

BFH045 BFH049 BFH053

BFH061 BFH065 BFH071

BFH075 BFH079 BFH089

BFH097 BFH107

BFH046 BFH054 BFH060

BFH066 BFH070 BFH080

BFH086 BFH090 BFH098

BFH106 BFH120 BFH132

BFH140 BFH152 BFH162

BFH168 BFH178 BFH194

BFH202 BFH212

Fan Data

Fan

Cong.

1 x 2 1 x 2

1 x 2 1 x 2 1 x 3

1 x 3 1 x 3 1 x 4

1 x 4 1 x 4 1 x 4

1 x 5 1 x 5 1 x 5

1 x 6 1 x 6

2 x 2 2 x 2 2 x 2

2 x 2 2 x 2 2 x 3

2 x 3 2 x 3 2 x 3

2 x 4 2 x 4 2 x 4

2 x 4 2 x 5 2 x 5

2 x 5 2 x 5 2 x 6

2 x 6 2 x 6

1

No. of

Fans

2 2

2 2 3

3 3 4

4 4 4

5 5 5

6 6

4 4 4

4 4 6

6 6 6

8 8 8

8 10 10

10 10 12

12 12

CFM

208-230/3/60 575/3/60 460/3/60

Single Row of Fans

19,780 19,800

19,110 18,340 29,700

28,660 28,070 38,600

37,250 38,020 35,710

46,610 46,200 44,580

55,400 53,460

Double Row of Fans

39,570 39,600 38,210

37,530 36,770 59,400

58,510 57,320 56,240

77,200 74,500 72,790

71,310 93,120 92,400

91,010 89,170

110,900 109,240

107,020

14.0

21.0

28.0

35.0

42.0

28.0

42.0

56.0

70.0

84.0

FLA

2

5.6

8.4

11.2

14.0

16.8

11.2

16.8

22.4

28.0

33.6

7.0

10.5

14.0

17.5

21.0

14.0

21.0

28.0

35.0

42.0

Operating

Charge

(Gal.)

6.6

9.0

11.6

12.8

16.4

21.3

20.0

26.1

31.0

13.3

18.2

23.1

25.4

32.8

32.7

42.5

40.0

52.1

62.0

Approx.

Net Wt.

†

(lbs.)

720 760

780 860

1,170 1,190

1,220 1,550

1,590 1,620 1,730

1,960 1,960 2,200

2,350 2,580

1,560 1,600 1,650

1,670 1,780 2,350

2,400 2,500 2,560

3,080 3,140 3,190

3,450 3,920 3,930

4,070 4,300 4,620

4,800 5,130

Model BFH

Notes:

1

All fan blades are 30" diameter

2

All motors are 1-1/2 HP, 208-230/460/3/60, 1140 RPM

†

Does not include operating charge

15

For more information on Bohn refrigeration products, contact your sales representative or visit us at www.thecoldstandard.com.

A Brand of Heatcraft Refrigeration Products LLC 2175 West Park Place Blvd. • Stone Mountain, GA 30087

800.537.7775 • FAX 770.465.5990

www.thecoldstandard.com

Since product improvement is a continuing eort, we reserve the right to make changes in specications without notice.

BN-FCTB-0407 | version 000

Bohn DFT-005 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual