Fan heater, resistant to dust and water (IP66) axial fan, easy cleaning, dedicated for aggressive environments, chicken farms, sawmills, car washes, swimming pools, epoxy and protective layer coated three-row heat exchanger, 8-43 kW heating capacity, anti-corrosive coated galvanized steel casing, air flow 3700 m³/h, fan power 350 W, weight 21.8 kg, 2 year WARRANTY
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Arvydas Palivonas

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+370 601 74426

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Andrius Lekarevičius

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+370 606 11865

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Click on the Model for technical data, dimensions, accessories
LEO AGRO - resistant to dust and water (IP66) axial fan, easy cleaning, dedicated for aggressive environments
LEO AGRO 43 ST Chicken farms, sawmills, car washes, swimming pools, epoxy and protective layer coated three-row heat exchanger, 8-43 kW heating capacity, anti-corrosive coated galvanized steel casing, air flow 3700 m³/h, fan power 350 W, weight 21.8 kg, 2 year WARRANTY
LEO AGRO 43 ST
Chicken farms, sawmills, car washes, swimming pools, epoxy and protective layer coated three-row heat exchanger, 8-43 kW heating capacity, anti-corrosive coated galvanized steel casing, air flow 3700 m³/h, fan power 350 W, weight 21.8 kg, 2 year WARRANTY
NW 50 AGRO Hen houses, drying facilities, openable casing, epoxied three-row heat exchanger, 16-56 kW heating capacity, ABS plastic casing, air flow 4600 m³/h, fan power 360 W, weight 27.3 kg, 2 year WARRANTY
NW 50 AGRO
Hen houses, drying facilities, openable casing, epoxied three-row heat exchanger, 16-56 kW heating capacity, ABS plastic casing, air flow 4600 m³/h, fan power 360 W, weight 27.3 kg, 2 year WARRANTY
NW 50 AGRO HP Swine farms, waste plants, openable casing, three-row heat exchanger coated with few layers of special paint, 16-56 kW heating capacity, ABS plastic casing, air flow 4600 m³/h, fan power 360 W, weight 27.3 kg, 2 year WARRANTY
NW 50 AGRO HP
Swine farms, waste plants, openable casing, three-row heat exchanger coated with few layers of special paint, 16-56 kW heating capacity, ABS plastic casing, air flow 4600 m³/h, fan power 360 W, weight 27.3 kg, 2 year WARRANTY
Model: LEO AGRO 43 ST
General data
Heating capacity at 90/70°C water and 0°C air temperature
kW
43,0
Heating capacity at 50/40°C water and 20°C air temperature
kW
12,1
Air flow range (measured horizontaly at 0.5 m/s speed limit)
m
22
Purpose
Heating for chicken farms, sawmills, car washes, swimming pools
Max. air flow
m³/h
3700
Fan data
Power supply
V/Hz
230/50
Max. power consumption
W
350
Max. current consumption
A
1,8
Fan type
Standard AC
IP / Insulation class
66 / F
Max. acoustic pressure level at a distance of 5 m from the unit, in the 1500 m³ room of medium capabillity of sound absorption
dB(A)
51
Fan rotation speed
rpm
1350
Installation data
Max. operating temperature
°C
40
Max. heating water temperature
°C
130
Max. operating pressure
MPa
1,6
Hydraulic connection
Ø "
¾
Other data
Heat exchanger
Epoxy and special anticorrosive layer coated, three-row
Casing
Anticorrosive layer coated galvanized steel
Dimensions
Width
mm
670
Depth
mm
510
Height
mm
630
Weight
kg
21,8
Weight of unit filled with water
kg
23,9

Dimensions

Model: LEO AGRO 43 ST

Heating capacity tables

LEO AGRO 43 ST airflow on 5 speed = 3700 m³/h
Tp1
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 90/70°C
43,0
1890
20,0
32,5
39,7
1750
17,0
35,5
36,6
1610
15,0
38,5
33,5
1470
15,0
41,5
30,4
1340
12,0
44,5
27,5
1210
10,0
47,5
24,5
1080
10,0
50,5
21,7
950
8,0
53,5
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 80/60°C
37,2
1630
16,0
28,0
34,0
1490
15,0
31,0
30,9
1360
13,0
34,0
27,8
1220
11,0
37,0
24,9
1090
10,0
40,0
21,9
960
8,0
43,0
19,1
840
6,0
46,0
16,2
710
6,0
49,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 70/50°C
31,3
1370
13,0
23,5
28,2
1230
11,0
26,5
25,1
1100
10,0
29,5
22,2
970
8,0
32,5
19,2
840
6,0
35,5
16,3
710
6,0
38,5
13,5
590
5,0
41,5
10,7
470
5,0
44,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 70/40°C
27,0
790
6,0
20,5
23,9
700
6,0
23,5
20,9
610
5,0
26,5
17,9
520
4,0
29,5
14,9
430
4,0
32,0
11,9
350
3,0
35,0
8,9
260
2,0
37,5
5,6
160
2,0
40,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 60/40°C
25,4
1110
11,0
19,0
22,4
980
9,0
22,0
19,4
840
7,0
25,0
16,4
720
7,0
28,0
13,5
590
5,0
31,0
10,7
460
5,0
34,0
7,8
340
3,0
36,5
4,8
210
3,0
39,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 50/40°C
23,8
2070
26,0
18,0
20,8
1810
21,0
21,0
17,8
1550
18,0
24,0
15,0
1300
13,0
27,0
12,1
1050
10,0
30,0
9,3
810
6,0
33,0
6,6
570
4,0
35,5
3,8
330
3,0
38,0
LEO AGRO 43 ST airflow on 4 speed = 3150 m³/h
Tp1
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 90/70°C
39,0
1720
17,0
34,5
36,0
1590
15,0
37,5
33,1
1460
14,0
40,5
30,3
1340
12,0
43,5
27,6
1220
10,0
46,0
24,9
1100
10,0
49,0
22,2
980
8,0
52,0
19,6
870
6,0
54,5
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 80/60°C
33,7
1480
15,0
30,0
30,8
1350
13,0
33,0
28,0
1230
11,0
35,5
25,5
1110
10,0
38,5
22,6
990
8,0
41,5
19,9
870
7,0
44,5
17,3
760
7,0
47,0
14,7
650
5,0
50,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 70/50°C
28,4
1240
11,0
25,0
25,6
1120
11,0
28,0
22,8
1000
9,0
31,0
20,1
880
7,0
34,0
17,5
760
5,0
36,5
14,9
650
5,0
39,5
12,3
540
4,0
42,0
9,7
430
4,0
45,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 70/40°C
24,6
720
6,0
22,0
21,8
630
5,0
24,5
19,0
550
4,0
27,5
16,3
470
4,0
30,5
13,6
400
3,0
33,0
10,9
320
3,0
35,5
8,1
240
3,0
38,0
5,2
150
3,0
40,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 60/40°C
23,1
1010
9,0
20,5
20,3
890
7,0
23,5
17,6
770
6,0
26,0
14,9
650
5,0
29,0
12,3
540
4,0
32,0
9,7
420
4,0
34,5
7,1
310
2,0
37,0
4,4
190
5,0
39,5
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 50/40°C
21,6
1880
22,0
19,0
18,9
1640
17,0
22,0
16,2
1410
15,0
25,0
13,6
1180
11,0
27,5
11,0
960
8,0
30,5
8,5
740
7,0
33,5
6,0
520
4,0
36,0
3,5
300
2,0
38,5
LEO AGRO 43 ST airflow on 3 speed = 2800 m³/h
Tp1
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 90/70°C
36,2
1600
15,0
36,0
33,5
1480
15,0
39,0
30,8
1360
12,0
42,0
28,2
1240
11,0
44,5
25,6
1130
9,0
47,5
23,1
1020
9,0
50,0
20,7
910
7,0
53,0
18,3
800
6,0
55,5
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 80/60°C
31,3
1380
13,0
31,0
28,7
1260
11,0
34,0
26,0
1140
9,0
37,0
23,5
1030
9,0
39,5
20,9
920
7,0
42,5
18,5
810
6,0
45,0
16,1
710
6,0
48,0
13,7
600
5,0
50,5
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 70/50°C
26,4
1160
10,0
26,5
23,8
1040
9,0
29,0
21,2
930
8,0
32,0
18,7
820
6,0
34,5
16,2
710
6,0
37,5
13,8
610
5,0
40,0
11,4
500
3,0
42,5
9,0
400
3,0
45,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 70/40°C
22,9
670
6,0
23,0
20,3
590
5,0
25,5
17,8
520
4,0
28,5
15,2
440
4,0
31,0
12,7
370
3,0
33,5
10,2
300
3,0
36,0
7,6
220
2,0
38,5
4,9
140
2,0
40,5
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 60/40°C
21,5
940
8,0
21,5
18,9
820
6,0
24,0
16,4
720
6,0
27,0
13,9
610
5,0
29,5
11,5
500
3,0
32,5
9,1
400
3,0
35,0
6,6
290
2,0
37,5
4,1
180
2,0
40,5
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 50/40°C
20,1
1750
19,0
20,0
17,5
1530
17,0
23,0
15,1
1310
13,0
25,5
12,6
1100
11,0
28,5
10,2
890
7,0
31,0
7,9
690
6,0
33,5
5,6
490
3,0
36,0
3,2
280
2,0
39,0
LEO AGRO 43 ST airflow on 2 speed = 2400 m³/h
Tp1
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 90/70°C
32,8
1450
14,0
38,0
30,3
1340
12,0
41,0
27,9
1230
10,0
43,5
25,6
1130
10,0
46,5
23,2
1020
9,0
49,0
21,0
920
7,0
51,5
18,7
830
6,0
54,0
16,6
730
6,0
57,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 80/60°C
28,4
1250
11,0
33,0
26,0
1140
9,0
36,0
23,6
1040
9,0
38,5
21,3
940
8,0
41,0
19,0
830
6,0
43,5
16,8
740
7,0
46,5
14,6
640
5,0
49,0
12,5
550
4,0
51,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 70/50°C
24,0
1050
10,0
28,0
21,6
950
8,0
30,5
19,3
840
6,0
33,5
17,0
740
7,0
36,0
14,8
650
5,0
38,5
12,6
550
5,0
41,0
10,4
460
4,0
43,5
8,2
360
3,0
46,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 70/40°C
20,9
610
5,0
24,5
18,5
540
5,0
27,0
16,1
470
5,0
29,5
13,9
400
4,0
32,0
11,6
340
3,0
34,5
9,3
270
3,0
37,0
7,0
200
2,0
39,0
4,5
130
2,0
41,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 60/40°C
19,5
850
7,0
22,5
17,2
750
7,0
25,5
14,9
650
5,0
28,0
12,7
550
5,0
30,5
10,5
460
4,0
33,0
8,3
360
3,0
35,5
6,1
260
2,0
38,0
3,8
160
2,0
40,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 50/40°C
18,2
1580
16,0
21,0
15,9
1380
14,0
24,0
13,7
1190
11,0
26,5
11,4
1000
9,0
29,0
9,3
810
6,0
31,5
7,2
620
5,0
34,0
5,1
440
5,0
36,5
3,0
260
2,0
39,0
LEO AGRO 43 ST airflow on 1 speed = 1900 m³/h
Tp1
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
PT
Qw
∆pw
Tp2
kW
l/h
kPa
°C
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 90/70°C
28,2
1240
11,0
41,5
26,0
1150
9,0
44,0
23,9
1060
9,0
46,5
21,9
970
8,0
49,0
19,9
880
7,0
51,5
18,0
790
5,0
54,0
16,1
710
4,0
56,0
14,2
630
5,0
58,5
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 80/60°C
24,4
1070
10,0
36,0
22,3
980
8,0
38,5
20,3
890
7,0
41,0
18,3
800
6,0
43,5
16,3
720
6,0
46,0
14,4
630
5,0
48,0
12,6
550
4,0
50,5
10,7
470
4,0
53,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 70/50°C
20,6
900
7,0
30,5
18,6
810
6,0
33,0
16,6
730
6,0
35,5
14,6
640
5,0
38,0
12,7
560
4,0
40,0
10,8
470
4,0
42,5
9,0
390
3,0
44,5
7,1
310
2,0
47,0
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 70/40°C
18,0
520
6,0
26,5
16,0
470
5,0
29,0
14,0
410
4,0
31,5
12,0
350
3,0
33,5
10,0
290
2,0
36,0
8,1
240
1,0
38,0
6,1
180
1,0
40,0
3,9
110
1,0
41,5
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 60/40°C
16,8
730
7,0
24,5
14,8
650
5,0
27,0
12,9
560
4,0
29,5
10,9
480
4,0
32,0
9,0
390
4,0
34,5
7,2
310
3,0
36,5
5,3
230
3,0
38,5
3,3
140
3,0
40,5
 
0
5
10
15
20
25
30
35
Tw1/Tw2 = 50/40°C
15,6
1360
14,0
23,0
13,6
1190
11,0
25,5
11,7
1020
9,0
28,0
9,8
860
7,0
30,5
8,0
700
6,0
32,5
6,2
540
4,0
35,0
4,4
380
4,0
37,0
2,6
220
4,0
39,0
  • PT - heating capacity
  • Tp1 - air temperature at the unit inlet
  • Tp2 - air temperature at the unit outlet
  • Tw1 - heating medium temperature at the heat exchanger inlet
  • Tw2 - heating medium temperature at the heat exchanger outlet
  • Qw - heating medium flow rate in heat exchanger
  • Δpw - heating medium pressure drop in heat exchanger

If you want to calculate heating capacity at different parameters you can do this at manufacturer website.

LEO AGRO fan heaters are specially designed for aggressive conditions and well-suited for heating of large areas where dust, high humidity and chemicals based corrosive exposure is present, e.g. poultry, pig, cattle and stud farms, washing and drying sites, waste water treatment areas, etc. LEO AGRO heaters are non-inertial: high capacity enables fast and uniform heating of premises; safe and easy to clean. LEO AGRO fan heaters are manufactured of three different casings: 1) metal casing, 2) plastic casing and 3) openable casing.

LEO AGRO NEW fan heater1) LEO AGRO ST metal casing is made of zinc steel coated with anticorrosive layer, resistant to abrasion, heat, cold, corrosion and weather conditions. Specific heat exchanger is epoxy and special anticorrosive layer coated. Larger gaps between heating fins (4 mm) as well as thicker heating fins make easy cleaning of impurities with high pressure washing equipment. Washing process causes no deformation to heating fins, and drain plugs installed at the top and bottom of heater casing provide easy removal of water accumulated in the casing. LEO AGRO heaters are recommended to use in large areas of high ammonia concentration (up to 25 ppm), high air dust and humidity level: in chicken farms, sawmills, car wash sites, pools.

LEO AGRO CR fan heater2) LEO AGRO CR – plastic casing, heat exchanger is anticorosive layer coated. It has thicker heating fins with larger gaps between them (4 mm). Most suitable for high humidity and average pollution premises, such as: car washes, swimming pools, greenhouses. It can be washed with high pressure washing equipment.

LEO AGRO HP SP fan heater3) Key advantage of LEO AGRO SP and HP is easy-to-open casing which ensures easy access to heat exchanger for cleaning from both sides. Fan in LEO AGRO SP and HP models is located in the front part of the heater, and it directs heat from heat exchanger to the premises at the distance of 28 m.
SP model heat exchangers are epoxy coated; they are designed for aggressive environment such as poultry farms and drying sites. SP models as standard LEO AGRO ones can be applied in areas of high ammonia concentration (up to 25 ppm).
HP model heat exchangers are coated with several layers of special anticorrosive paint and are designed for heating of EXTREMELY severe areas: pig farms and waste water treatment areas. Heaters are resistant to major corrosive compounds; they also can be cleaned by pressurized air or flushed by high pressure washing equipment.

All LEO AGRO models are equipped with IP66 protection class fans with thickened plastic blades which are more wear-resistant. Fan design allows the increasing loads (e.g. exchanger contamination with dust) to effect its performance as less as possible.

The advantages of LEO AGRO fan heaters:

  • Heaters are developed and produced by company FLOWAIR. This company specializes in production of such type of heaters only and is the number one in a competitive Polish market!
  • Designed for aggressive environment, agriculture – high quality parts, resistance to chemical exposure, humidity, dust and corrosion.
  • IP66 fan. Such fans with thickened plastic blades are suitable in the areas full of dust or humidity.
  • Easy to clean – heater dismantling is not needed; it can be cleaned by pressurized air or water. Larger gaps between heat exchanger fins which are thickened to prevent deformation when cleaning.
  • Quality guarantee – European product with technical properties meeting the declared values, CE certified.
  • Easy to install. Light weight and specific mounting brackets make LEO AGRO fan heaters easy to install.
  • Extensive application: poultry, pig, cattle and stud farms, slaughterhouses, sawmills, car wash sites, greenhouses, pools, drying sites, waste water treatment areas and other facilities with potential air pollution and high humidity.
LEO AGRO ST water heater for aggressive environment
Manuals 1.2 MB
Declarations of conformity 341 KB
Brochures 22.4 MB
Presentation 10 MB
Catalogue 1.4 MB
AutoCAD drawings 259 KB
LEO AGRO SP/HP water heater for aggressive environment
Manuals 1 MB
Declarations of conformity 341 KB
Brochures 22.4 MB
Presentation 10 MB
Catalogue 1.4 MB
AutoCAD drawings 2.3 MB
LEO AGRO CR water heater for aggressive environment
Manuals 1.2 MB
Declarations of conformity 341 KB
Presentation 10 MB
LEO AGRO HT water heater for aggressive environment
Presentation 10 MB