The Airtronic S2 line features both functional expansions like automatic altitude adjustments and a longer service life. A new brushless motor has extended service life to 5000 hours and the fuel metering pump acoustics have been improved for a quieter operation.
Airtronic
S2 Commercial
M2 Commercial
M2 Recreational*
Diesel
Diesel
Gasoline
Diesel
Version
D2L
D4L
B4L
D4R
Voltage V
12
24
12
24
12
12
Heating performance control
Stepless
Service life h
5,000
Heating performance kW
0.9 to 2.2
0.9 to 4.0
1.3 to 3.8
0.9 to 4.0
Heating-air throughput kg/h
105 (Ø 75 mm)
185 (Ø 90 mm)
190 (Ø 90 mm)
Guide number**
Ø 60 mm: 6
Ø 75 mm: 12
Ø 75 mm: 12
Ø 75 mm: 3
Ø 90 mm: 10
Ø 90 mm: 10
Ø 75 mm: 8
Ø 90 mm: 15
Ø 90 mm: 15
Electrical power consumption W
34
40
65
Fuel consumption l/h
0.28
0.51
0.54
0.51
Heater operating temperature °C
-40 to +70
-40 to +70
-40 to +50
-40 to +70
Weight kg
2.7
4.5
Main dimensions
L x W x H mm
L x W x H mm
310 x 115 x 122
371 x 140 x 150
Protection rating***
Heater: IP5K6K, IP5K9K
Interfaces
CAN, LIN (only 12 V), S+
Part number
25.2721.05.0000
25.2726.05.0000
25.2720.05.0000
25.2729.05.0000
20.1987.05.0000
25.2746.05.0000
Espar Climate Control System’s Airtronic air heaters operate like forced air furnaces utilizing the vehicle’s own fuel and power supply to produce heat without idling the vehicle. Heaters operate quietly and cycle through four output levels to provide the optimum temperatures at all times.
Units are suitable for a variety of applications but are especially well suited for cab and sleeper heat in class 8 trucks, workshop vehicles, and freight compartments. Airtronic air heaters can also be easily combined with one of Espar’s specially designed controllers for maximum controls and heater function.
BENEFITS:
- Designed for diesel engines
- Heat Output up to 4Kw
- Stepless heating control
- New brushless motor with 5000 hours service life
- Starting capability down to -40 to +70
- Auto Altitude adjustment up to 3000M
- Noise emission optimized
- Use of acoustically improved metering pump
- CAN bus technology for faster communication between components and devices
- Built-in self-diagnostics and error-detection
- EPA verified and CARB compliant for use anywhere in North America
USAGE:
- Cargo area for Box and Panel vans
- Truck and van cabins
- Campervan
- Mobile Workshop
- Boat (requires marine kit)
