Bohn WK 309.2 WKE Evaporator Coil

: Coffee Wke Bohn Evaporator Coil WKE Bohn Evaporator Coil images

Open the PDF directly: View PDF .
Page Count: 8

Download
Open PDF In Browser	View PDF

BULLETIN 309.2
April, 2001
Replaces 309.1 (9/98)

NEW WK SERIES
LOW AIR FLOW
UNIT COOLERS
Air Defrost +35 °F
Electric Defrost +24 °F — +34 °F
Hot Gas Defrost +24 °F — +34 °F

QUALITY IS FACTORY INSTALLED!



Enhanced tubing for more efficient operation.




Solenoid wiring harness factory installed for easy
installation.




Improved motor rail design for added strength and
durability.




Wire fan guards with PVC coating for durability.




Fan panel hangs from unit for easy servicing and
installation. Simple for one person to install and service!




Efficient terminal board design simplifies wiring between
the evaporator and condensing unit.




Sweat connections to reduce potential for leaks.

Bohn Low Air Flow Unit Coolers

WK Series
The WK Series is ideal for floral storage,
fresh fruit and vegetables, dough retarding,
fresh meat storage and preparations, and
many other applications of 24°F. and above.
The low air flow and quiet fans are ideal for
work room applications. The generous coil
surface combined with close T.D. system
balance provides high humidity
characteristics to minimize product shrinkage
and drying. WK Series units are available in
air, electric and hot gas defrost.

Bohn Model WKE 1-fan unit

Features
• Low height of the WK series makes it ideal for low ceiling coolers. Larger models are only 15 inches tall to allow for
maximum head room and more product storage.
• The WK series has a heavy gauge, attractive grained aluminum housing with stainless steel fasteners.
• Coils are dehydrated and sealed at the factory.
• WKE electric defrost models incorporate high quality tubular heaters and a defrost termination control factory set and
wired.
• Unit designed to be mounted flush against the ceiling or suspended on rods.
• Access panels on each end make expansion valve installation and electrical hookup easy.
• Motors are life lubricated and thermal overload protected.
• Fan panel is lightweight and can easily be lowered if internal inspection is required.
• A double drain pan eliminates drain pan sweating.
• Expansion valve mounts inside the cabinet.
• All WK Series units are UL listed for U.S.A. and Canada and meets NSF standards.

Options
• PSC motors for 50 or 60 Hertz operation.
• Other options available. Contact your Bohn sales representative.

Nomenclature

WK E 100 B C
Vintage

WK = Bohn Low Air
Flow Unit Cooler

Voltage
A = 115/1/60
B = 208-230/1/60

Defrost Designation
E = Electric
G = Hot Gas

© Heatcraft Inc. 2001

Capacity BTU x 100

2

Bohn Low Air Flow Unit Coolers
Diagram 1. Dimensions for all WK Series Units.
12 cm

(1 cm)

12 cm

73 cm

3 cm

3 cm

1 cm

1 cm

3 cm
2 cm

(2 cm Dia.)

68 cm

2 cm

Table 1. Dimensional Data for all WK Series Units.
Model Numbers
by Defrost Types
Air
Electric Hot Gas
WK 050 WKE 050
WK 075 WKE 075

——

A
6 7/8

——

6 7/8

WK 100 WKE 100 WKG 100
WK 130 WKE 130 WKG 130
WK 155 WKE 155 WKG 155
WK 180 WKE 180 WKG 180
WK 210 WKE 210 WKG 210
WK 270 WKE 270 WKG 270
WK 340 WKE 340 WKG 340

B
8 7/8

17

23
8 7/8

17
9 3/8

24
13 1/8
33
13 1/8
33
13 1/8
33
13 1/8
33
13 1/8
33
13 1/8
33

23
11 3/8
29
15 1/8
38
15 1/8
38
15 1/8
38
15 1/8
38
15 1/8
38
15 1/8
38

C
4 1/16
10
4 1/16
10
6 9/16
17
10 1/8
26
10 1/8
26
10 1/8
26
10 1/8
26
10 1/8
26
10 1/8
26

Dimensions (Inches/cm)
D
E
F
—4 5/8
3 1/4
12
8
—4 5/8
3 1/4
12
8
—7 1/8
3 1/4
18
8
—8 1/2
2 11/16
22
7
—8 1/2
2 11/16
22
7
—8 1/2
2 11/16
22
7
44
8 1/2
2 11/16
112
22
7
44
8 1/2
2 11/16
112
22
7
55
8 1/2
2 11/16
140
22
7

3

G
1 5/8

4
1 5/8

4
1 5/8

4
1 1/8

3
1 1/8

3
1 1/8

3
1 1/8

3
1 1/8

3
1 1/8

3

L
53 1/2
136
75 1/2
192
75 1/2
192
75 1/2
192
75 1/2
192
75 1/2
192
97 1/2
248
97 1/2
248
119 1/2
304

Connections (In.)
Liquid Suction
OD
OD
1/2

7/8

1/2

7/8

1/2

7/8

1 1/8

1 1/8

1 1/8

1 1/8

1 1/8

1 1/8

1 1/8

1 1/8

1 3/8

1 3/8

1 3/8

1 3/8

Bohn Low Air Flow Unit Coolers

AIR DEFROST
PERFORMANCE / ELECTRICAL DATA
Table 2. 60 Hz. Performance/Electrical Data for WK Air Defrost Units.
Capacities BTUH / kcal
Fan Data
Motor Data
50-55° F. DB
Shaded Pole (Std)
PSC (Opt.)
Model 10° F TD
15° F TD
55% RH 20° TD
115/1/60 230/1/60 115/1/60 230/1/60
No.
6° C TD
8° C TD
Total
Sensible
No. CFM/m3h Amps
Amps
Amps
Amps
5000
7500
10000
8500
725
WK 050
1
2.1
1.1
.9
.45
1260
1890
2520
2142
1233
7500
11250
15000
12750
730
WK 075
1
2.1
1.1
.9
.45
1890
2835
3780
3213
1241
10000
15000
20000
17000
1450
WK 100
2
4.2
2.2
1.8
.9
2520
3780
5040
4284
2465
13000
19500
26000
22100
1470
WK 130
2
4.2
2.2
1.8
.9
3276
4914
6552
5569
2499
15500
23250
31000
26350
1460
WK 155
2
4.2
2.2
1.8
.9
3906
5859
7812
6640
2482
18000
27000
36000
30600
2130
WK 180
3
6.3
3.3
2.7
1.35
4536
6804
9072
7711
3621
21000
31500
42000
35700
2840
WK 210
4
8.4
4.4
3.6
1.8
5292
7938
10584
8996
4828
27000
40500
54000
45900
2800
WK 270
4
8.4
4.4
3.6
1.8
6804
10206
13608
11567
4760
34000
51000
68000
57800
3500
WK 340
5
10.5
5.5
4.5
2.25
8568
12852
17136
14566
5950
All units have 1/4” OD external equalizer and 3/4” F.P.T. drain connection.

Approx.
Net
Weight
(Lbs / kg)
70
32
103
47
106
48
145
66
149
68
160
73
193
88
200
91
242
110

Table 3. 50 Hz. Performance/Electrical Data for WK Air Defrost Units.
Capacities BTUH / kcal
Fan Data
Motor Data
10-13° C. DB
PSC
10° F TD
15° F TD
55% RH 20° TD
110/1/50 220/1/50
Model
No.
6° C TD
8° C TD
Total
Sensible
No. CFM/m3h Amps
Amps
4800
7100
9500
8100
660
WK 050
1
.9
.45
1210
1790
2390
2040
1122
7100
10700
14300
12100
660
WK 075
1
.9
.45
1790
2700
3600
3050
1122
9500
14300
19000
16200
1310
WK 100
2
1.8
.9
2390
3600
4790
4080
2227
12400
18500
24700
21000
1330
WK 130
2
1.8
.9
3120
4660
6220
5290
2261
14700
22100
29500
25000
1320
WK 155
2
1.8
.9
3700
5570
7430
6300
2244
17100
25700
34200
29100
1920
WK 180
3
2.7
1.35
4310
6480
8620
7330
3264
20000
29900
39900
33900
2560
WK 210
4
3.6
1.8
5040
7530
10050
8540
4352
25700
38500
51300
43600
2530
WK 270
4
3.6
1.8
6480
9700
12930
10990
4301
32300
48500
64600
54900
3160
WK 340
5
4.5
2.25
8140
12220
16280
13830
5372
All units have 1/4” OD external equalizer and 3/4” F.P.T. drain connection.

4

Approx.
Net
Weight
(Lbs / kg)
70
32
103
47
106
48
145
66
149
68
160
73
193
88
200
91
242
110

Bohn Low Air Flow Unit Coolers

ELECTRIC DEFROST
PERFORMANCE / ELECTRICAL DATA
Table 4. 60 Hz. Performance/Electrical Data for WKE Electric Defrost Units.
Capacities
Fan Data
Motor Data
BTUH / kcal
Shaded Pole (Std)
PSC
Model
10° F TD
15° F TD
230/1/60
230/1/60
No.
6° C TD
8° C TD Qty CFM/m3h
Amps
Amps
5000
7500
725
WKE 050
1
1.1
.45
1260
1890
1233
7500
11250
730
WKE 075
1
1.1
.45
1890
2835
1241
10000
15000
1450
WKE 100
2
2.2
.9
2520
3780
2465
13000
19500
1470
WKE 130
2
2.2
.9
3276
4914
2499
15500
23250
1460
WKE 155
2
2.2
.9
3906
5859
2482
18000
27000
2130
WKE 180
3
3.3
1.35
4536
6804
3621
21000
31500
2840
WKE 210
4
4.4
1.8
5292
7938
4828
27000
40500
2800
WKE 270
4
4.4
1.8
6804
10206
4760
34000
51000
3500
WKE 340
5
5.5
2.25
8568
12852
5950
All units have 1/4” OD external equalizer and 3/4” F.P.T. drain connection.

Heaters
Total
Watts
2000

230/1/60
Amps
8.7

2400

10.5

2800

12.2

4000

17.4

4000

17.4

4000

17.4

5200

22.6

5200

22.6

7000

30.4

Approx.
Net
Weight
(Lbs/kg)
75
34
108
49
111
50
150
68
154
70
157
71
203
92
208
94
250
113

Table 5. 50 Hz. Performance/Electrical Data for WKE Electric Defrost Units.
Capacities
Fan Data
Motor Data
BTUH / kcal
PSC
Model
10° F TD
15° F TD
220/1/50
No.
6° C TD
8° C TD Qty
CFM/m3h
Amps
4800
7100
660
WKE 050
1
.45
1210
1790
1122
7100
10700
660
WKE 075
1
.45
1790
2700
1122
9500
14300
1310
WKE 100
2
.9
2390
3600
2227
12400
18500
1330
WKE 130
2
.9
3120
4660
2261
14700
22100
1320
WKE 155
2
.9
3700
5570
2244
17100
25700
1920
WKE 180
3
1.35
4310
6480
3264
20000
29900
2560
WKE 210
4
1.8
5040
7530
4352
25700
38500
2530
WKE 270
4
1.8
6480
9700
4301
32300
48500
3160
WKE 340
5
2.25
8140
12220
5372
All units have 1/4” OD external equalizer and 3/4” F.P.T. drain connection.

5

Heaters
Total
Watts
1830

220/1/50
Amps
8.3

2200

10.0

2560

11.6

3660

16.6

3660

16.6

3660

16.6

4760

21.6

4760

21.6

6400

29.1

Approx.
Net
Weight
(Lbs / kg)
75
34
108
49
111
50
150
68
154
70
157
71
203
92
208
94
250
113

Bohn Low Air Flow Unit Coolers

HOT GAS DEFROST
PERFORMANCE / ELECTRICAL DATA
Table 6. 60 Hz. Performance/Electrical Data for WKG Hot Gas Defrost Units.
Capacities
Fan Data
Motor Data
Drain Pan Heaters
BTUH / kcal
Shaded Pole (Std)
PSC (Optional)
Model
10° F TD
15° F TD
115/1/60 230/1/60 115/1/60 230/1/60 Total 230/1/60 115/1/60
6° C TD
8° C TD Qty CFM/m3h
Amps
Amps
Amps
Amps Watts Amps
Amps
No.
WKG 100 10000 2520 15000 3780
2 14502465
4.2
2.2
1.8
.9
350
1.5
3
13000
19500
1470
WKG 130
4.2
2.2
1.8
.9
500
2.2
4.4
3276
4914 2
2499
15500
23250
1460
WKG 155
4.2
2.2
1.8
.9
500
2.2
4.4
3906
5859 2
2482
18000
27000
2130
WKG 180
6.3
3.3
2.7
1.35
500
2.2
4.4
4536
6804 3
3621
21000
31500
2840
WKG 210
8.4
4.4
3.6
1.8
650
2.8
5.7
5292
7938 4
4828
27000
40500
2800
WKG 270
8.4
4.4
3.6
1.8
650
2.8
5.7
6804
10206 4
4760
34000
51000
3500
WKG 340
10.5
5.5
4.5
2.25
875
3.8
7.6
8568
12852 5
5950
All units have 1/4” OD external equalizer and 3/4” F.P.T. drain connection.

Approx.
Net
Weight
(Lbs/kg)
131
59
170
77
174
79
185
84
223
101
228
103
270
122

Table 7. 50 Hz. Performance/Electrical Data for WKG Hot Gas Defrost Units.
Capacities
Fan Data
Motor Data
Drain Pan Heaters
BTUH / kcal
PSC
Model
10° F TD
15° F TD
110/1/50 220/1/50 Total
220/1/50 110/1/50
No.
6° C TD
8° C TD Qty CFM / m3h
Amps
Amps Watts
Amps
Amps
9500
14300
1310
WKG 100
2
1.8
.9
320
1.5
2.9
2390
3600
2227
12400
18500
1330
WKG 130
2
1.8
.9
460
2.1
4.2
3120
4660
2261
14700
22100
1320
WKG 155
2
1.8
.9
460
2.1
4.2
3700
5570
2244
17100
25700
1920
WKG 180
3
2.7
1.35
460
2.1
4.2
4310
6480
3264
20000
29900
2560
WKG 210
4
3.6
1.8
595
2.7
5.4
5040
7530
4352
25700
38500
2530
WKG 270
4
3.6
1.8
595
2.7
5.4
6480
9700
4301
32300
48500
3160
WKG 340
5
4.5
2.25
800
3.6
7.3
8140
12220
5372
All units have 1/4” OD external equalizer and 3/4” F.P.T. drain connection.

Optional Liquid Line Bypass Kit For Reverse Cycle Hot Gas Defrost
The WKG may be field piped for reverse cycle defrost using the optional bypass kit.
When compressor vapor, in reverse cycle defrosting, is directed back into the evaporator
at the suction connection, it condenses into liquid. The field installed liquid line bypass
kit directs the condensed liquid around the thermostatic expansion valve and back
into the liquid line.
Bypass kits include bypass piping, check valve, and instructions. Adjustable fan
control is shipped loose with hot gas units.

6

Approx.
Net
Weight
(Lbs / kg)
131
59
170
77
174
79
185
84
223
101
228
103
270
122

Bohn Low Air Flow Unit Coolers

Table 8. Replacement Parts List
Part Description

Electrical Components
Motor 115/1/60 Shaded Pole
Motor 208-230/1/60 Shaded Pole
Motor 115/1/60 or 110/1/50 PSC
Motor 208-230/1/60 or 220/1/50 PSC
Defrost termination switch “WKE”
Heater**
Fan Components
Fan Blade
Fan Guard
Cabinet Components
Fan Panel / Drain Pan
Inner drain pan assembly: Air Defrost
Inner drain pan: Electric & Hot Gas Defrost
End panel (2 per unit)
Side panel (4 per unit)
Defrost termination switch (WKG models only)

Part Description

Electrical Components
Motor 115/1/60 Shaded Pole
Motor 208-230/1/60 Shaded Pole
Motor 115/1/60 or 110/1/50 PSC
Motor 208-230/1/60 or 220/1/50 PSC
Defrost termination switch “WKE”
Heater**
Fan Components
Fan Blade
Fan Guard
Cabinet Components
Fan Panel / Drain Pan
Inner drain pan assembly: Air Defrost
Inner drain pan: Electric & Hot Gas Defrost
End panel (2 per unit)
Side panel (4 per unit)
Defrost termination switch (WKG models only)

WK130
WKE130
WKG130

WK155
WKE155
WKG155

5036S (1)
5036T (1)
5036N (1)
5036P (1)
4511C
4402S (2)

Model Number
WK100
WKE100
WKG100
Part Number*
5036S (2)
5036T (2)
5036N (2)
5036P (2)
5521R
4543B (4)

5036S (2)
5036T (2)
5036N (2)
5036P (2)
5521R
4544B (4)

5036S (2)
5036T (2)
5036N (2)
5036P (2)
5521R
4544B (4)

5110E (1)
5505-F (1)

5110E (1)
5505-F (1)

5110E (2)
5505-F (1)

5110E (2)
5505-F (1)

5110E (2)
5505-F (1)

C26769A2
B25196A1
B24358A2
B24264A1
A20673A1

C26770A2
B25197A1
B24358B1
B24264A1
A20673A1

C26771A2
B25197A1
B24358A7
C26767A1
B24493A1
4267W

C26771A2
B25197A1
B24358A7
C26768A1
B24494A1
4267W

C26771A2
B25197A1
B24358A7
C26768A1
B24494A1
4267W

WK050
WKE050

WK075
WKE075

5036S (1)
5036T (1)
5036N (1)
5036P (1)
4511C
4401S (2)

5036S (3)
5036T (3)
5036N (3)
5036P (3)
5521R
4544B (4)

Model Number
WK210
WK270
WKE210
WKE270
WKG210
WKG270
Part Number*
5036S (4)
5036S (4)
5036T (4)
5036T (4)
5036N (4)
5036N (4)
5036P (4)
5036P (4)
5521R
5521R
4545B (4)
4545B (4)

5036S (5)
5036T (5)
5036N (5)
5036P (5)
5521R
4546B (4)

5110E (3)
5505F (3)

5110E (4)
5505F (4)

5110E (4)
5505F (4)

5110E (5)
5505F (5)

40849203
B25197A1
B24358A7
C26768A1
B24494A1
4267W

40849303
B25198A1
B24358A8
C26768A1
B24494A1
4267W

40849303
B25198A1
B24358A8
C26768A1
B24494A1
4267W

40849403
C26774A1
B24358A9
C26768A1
B24494A1
4267W

WK180
WKE180
WKG180

FOR UNITS PRIOR TO “C” REVISION, PLEASE CONSULT FACTORY.
* Number in parenthesis is quantity per unit.
** All hot gas models have two heaters.

7

WK340
WKE340
WKG340

Table 9. Standard Nozzle Selections for WK Units (Included with unit for field installation)
Type
WK
Air
Defrost

No. of
Fans
1
2

3
4

WKE
Electric
Defrost
and
WKG
Hot Gas
Defrost

5
1
2

3
4
5

Distributor
Tube Length
18
18
18
24
24
24
24
24
24
18
18
18
24
24
24
24
24
24

Model
50
75
100
130
155
180
210
270
340
50
75
100
130
155
180
210
270
340

No. of
Circuits
2
4
6
12
10
12
12
20
20
2
4
6
12
10
12
12
20
20

Nozzles
R-404A**
L- 1/2
L- 3/4
L- 1
E- 1 1/2
E- 2
E- 2
E- 2 1/2
C- 3
C- 4
L- 1/2
L- 1
L- 1 1/2
E- 1 1/2
E- 2
E- 2
E- 2 1/2
C- 3
C- 4

R-22
L- 1/3
L- 1/2
L- 3/4
E- 1
E- 1
E- 1 1/2
E- 1 1/2
C- 2
C- 2 1/2
L- 1/3
L- 3/4
L- 3/4
E- 1
E- 1 1/2
E- 1 1/2
E- 2
C- 2
C- 2 1/2

** also suitable for R-507, R-502, R-134a, R-401A, R-402A.
Distributor tube O.D. = 3/16" for all models.
Nozzles sized for 95˚ F liquid temp at expansion valve. Refer to Installation and Maintenance manual if liquid temp is not 95˚ F.
Room temperature of 35˚ F for air defrost models and 28˚ F for electric/hot gas models.
Consult your Bohn sales representative or the factory if evaporator TD is not 10˚-15˚ F, (room temp - saturated suction temp).
NOTE: REFRIGERATION SYSTEM WILL NOT PERFORM PROPERLY WITHOUT CORRECT NOZZLE!

The Cold Standard
2175 West Park Place Blvd. • Stone Mountain, GA 30087
Phone: 770-465-5600 • Fax: 770-465-5990
www.heatcraftrpd.com • Email: hrpd.feedback@heatcraft.com
A Heatcraft Refrigeration brand



---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.4
Linearized                      : Yes
Encryption                      : Standard V1.2 (40-bit)
User Access                     : Print, Copy, Annotate, Fill forms, Extract, Assemble, Print high-res
Create Date                     : 2002:10:15 15:08:00Z
Modify Date                     : 2002:10:15 11:09:43-04:00
Page Count                      : 8
Creation Date                   : 2002:10:15 15:08:00Z
Mod Date                        : 2002:10:15 11:09:43-04:00
Producer                        : Acrobat Distiller 5.0.5 for Macintosh
Author                          : April
Metadata Date                   : 2002:10:15 11:09:43-04:00
Creator                         : April
Title                           : Bohn WK 309.2

EXIF Metadata provided by EXIF.tools