These units ensure immediate heat without long heat up periods.

Air as a heat transmitting medium has got its strenghts in heating up large and high rooms, such as garages, production halls, exhibition halls and greenhouses, to mention just a few of the various possible fields of operation. The units can be operated with fresh air, secondary air or recirculated air.

Due to the short lead time, the heat is immediately available for every request. As standard versions, the units can be mounted in upright or vertical position, or suspended from the ceiling. Or they can be equipped with an individually designed duct system to distribute the warm air into several rooms. Pressures of up to 1600 Pa are possible. Special accessories such as air inlet filters, outlet grills, controls etc. ensure that every possible heating scheme can be accomplished. The units can be operated with oil burner, gas burner or multi-fuel oil burner.

Our SC unit (S-Comfort) has an integrated full-touch control. Already installed units (S-Standard) can be upgraded to the new control via a service kit.

Kroll offers you a comprehensive service.

In addition to delivering warm air heaters, we already support you with our know-how at planning a heating solution. Of course, we also offer commissioning and servicing by our engineers if required – everything from one hand.

Model Type of energy Type of heat

25S/25SC Oil/Gas Oil

25S 1
Nominal heat input

28 kW

Nonminal heat output

25,5 kW

Air delivery

1650 m³/h

Temperature rise

43 K

Oil consumption

2,33 kg/h

Gas consumption m³/h

2,7 m³/h

El. power supply

0,22 kW

Electrical connection

230/50 V/HZ/A

Flue gas pipe diameter

130 mm

Width

455 mm

Length

715 mm

Height

1275 mm

Weight

93 kg

Noise level

68 db(A)

40S/40SC Oil/Gas Oil

40S 1
Nominal heat input

40 kW

Nonminal heat output

37,5 kW

Air delivery

2900 m³/h

Temperature rise

42 K

Oil consumption

3,44 kg/h

Gas consumption m³/h

3,86 m³/h

El. power supply

0,58 kW

Electrical connection

230/50 V/HZ/A

Flue gas pipe diameter

130 mm

Width

505 mm

Length

865 mm

Height

1500 mm

Weight

124 kg

Noise level

71 db(A)

55S/55SC Oil/Gas Oil

55S 1
Nominal heat input

55 kW

Nonminal heat output

50,5 kW

Air delivery

3700 m³/h

Temperature rise

45 K

Oil consumption

4,64 kg/h

Gas consumption m³/h

5,3 m³/h

El. power supply

1,5 kW

Electrical connection

230/50 V/HZ/A

Flue gas pipe diameter

130 mm

Width

585 mm

Length

975 mm

Height

1645 mm

Weight

157 kg

Noise level

71 db(A)

70S/70SC Oil/Gas Oil

70S 1
Nominal heat input

70 kW

Nonminal heat output

64 kW

Air delivery

5000 m³/h

Temperature rise

44 K

Oil consumption

5,84 kg/h

Gas consumption m³/h

6,75 m³/h

El. power supply

1,1 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

180 mm

Width

665 mm

Length

1085 mm

Height

1835 mm

Weight

191 kg

Noise level

68 db(A)

95S/95SC Oil/Gas Oil

95S 1
Nominal heat input

95 kW

Nonminal heat output

88 kW

Air delivery

6750 m³/h

Temperature rise

44 K

Oil consumption

8,01 kg/h

Gas consumption m³/h

9,16 m³/h

El. power supply

1,5 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

180 mm

Width

765 mm

Length

1150 mm

Height

1895 mm

Weight

245 kg

Noise level

69 db(A)

110S/110SC Oil/Gas Oil

40S 1
Nominal heat input

110 kW

Nonminal heat output

100 kW

Air delivery

7650 m³/h

Temperature rise

44 K

Oil consumption

9,19 kg/h

Gas consumption m³/h

10,61 m³/h

El. power supply

1,5 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

180 mm

Width

765 mm

Length

1150 mm

Height

1995 mm

Weight

265 kg

Noise level

69 db(A)

140S Oil/Gas Oil

140S 1
Nominal heat input

129 kW

Nonminal heat output

120 kW

Air delivery

9200 m³/h

Temperature rise

44 K

Oil consumption

10,8 kg/h

Gas consumption m³/h

12,4 m³/h

El. power supply

1,1 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

249 mm

Width

1025 mm

Length

1250 mm

Height

2180 mm

Weight

399 kg

Noise level

73 db(A)

170S Oil/Gas Oil

170S 1
Nominal heat input

163 kW

Nonminal heat output

150 kW

Air delivery

11800 m³/h

Temperature rise

43 K

Oil consumption

13,7 kg/h

Gas consumption m³/h

15,7 m³/h

El. power supply

2,2 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

249 mm

Width

1025 mm

Length

1250 mm

Height

2180 mm

Weight

405 kg

Noise level

73 db(A)

195S Oil/Gas Oil

195S 1
Nominal heat input

194 kW

Nonminal heat output

180 kW

Air delivery

13800 m³/h

Temperature rise

44 K

Oil consumption

16,3 kg/h

Gas consumption m³/h

18,6 m³/h

El. power supply

1,5 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

249 mm

Width

1025 mm

Length

1750 mm

Height

2180 mm

Weight

495 kg

Noise level

75 db(A)

260S Oil/Gas Oil

260S 1
Nominal heat input

250 kW

Nonminal heat output

230 kW

Air delivery

18400 m³/h

Temperature rise

42 K

Oil consumption

21 kg/h

Gas consumption m³/h

24 m³/h

El. power supply

3 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

249 mm

Width

1025 mm

Length

1750 mm

Height

1780 mm

Weight

503 kg

Noise level

75 db(A)

290S Oil/Gas Oil

290S 1
Nominal heat input

280 kW

Nonminal heat output

260 kW

Air delivery

20600 m³/h

Temperature rise

42 K

Oil consumption

23,5 kg/h

Gas consumption m³/h

26,9 m³/h

El. power supply

3 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

249 mm

Width

1025 mm

Length

2200 mm

Height

1780 mm

Weight

662 kg

Noise level

74 db(A)

360S Oil/Gas Oil

360S 1
Nominal heat input

326 kW

Nonminal heat output

300 kW

Air delivery

23400 m³/h

Temperature rise

43 K

Oil consumption

27,3 kg/h

Gas consumption m³/h

31,3 m³/h

El. power supply

5,5 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

249 mm

Width

1025 mm

Length

2200 mm

Height

1780 mm

Weight

689 kg

Noise level

74 db(A)

430S Oil/Gas Oil

430S 1
Nominal heat input

423 kW

Nonminal heat output

390 kW

Air delivery

29500 m³/h

Temperature rise

45 K

Oil consumption

35,5 kg/h

Gas consumption m³/h

40,7 m³/h

El. power supply

5,5 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

299 mm

Width

1220 mm

Length

2200 mm

Height

2645 mm

Weight

1004 kg

Noise level

74 db(A)

490S Oil/Gas Oil

490S 1
Nominal heat input

489 kW

Nonminal heat output

450 kW

Air delivery

35000 m³/h

Temperature rise

44 K

Oil consumption

41,1 kg/h

Gas consumption m³/h

47 m³/h

El. power supply

7,5 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

299 mm

Width

1220 mm

Length

2200 mm

Height

2645 mm

Weight

1015 kg

Noise level

77 db(A)

580S Oil/Gas Oil

580S 1
Nominal heat input

544 kW

Nonminal heat output

500 kW

Air delivery

37500 m³/h

Temperature rise

45 K

Oil consumption

50,3 kg/h

Gas consumption m³/h

57,5 m³/h

El. power supply

5,5 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

299 mm

Width

1220 mm

Length

2700 mm

Height

2745 mm

Weight

1185 kg

Noise level

78 db(A)

650S Oil/Gas Oil

650S 1
Nominal heat input

598 kW

Nonminal heat output

550 kW

Air delivery

42600 m³/h

Temperature rise

44 K

Oil consumption

54,8 kg/h

Gas consumption m³/h

62,7 m³/h

El. power supply

7,5 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

299 mm

Width

1220 mm

Length

2700 mm

Height

2745 mm

Weight

1196 kg

Noise level

78 db(A)

730S Oil/Gas Oil

730S 1
Nominal heat input

652 kW

Nonminal heat output

600 kW

Air delivery

48300 m³/h

Temperature rise

42 K

Oil consumption

60,2 kg/h

Gas consumption m³/h

68,9 m³/h

El. power supply

1,1 kW

Electrical connection

400/50 V/HZ/A

Flue gas pipe diameter

299 mm

Width

1220 mm

Length

2700 mm

Height

2745 mm

Weight

1248 kg

Noise level

78 db(A)