Eberspacher HYDRONIC B4W SC 12V (petrol compact)
Preheater heater HYDRONIC B4W SC will be for you simply an indispensable assistant. If you have to warm up the engine at least once, freezing in the cabin, you will appreciate this device!
The nominal voltage is 12 V. The model is suitable for passenger cars, pickup trucks and vans with a gasoline engine with a volume of up to 2 liters. The control is not included in the scope of supply and is purchased separately. A mounting kit is included in the package.
Package of heater:
Heater
Fuel pump with mounting bracket
Hose water 2.2 meters
Bracket for heater mounting
Silencer for combustion air inlet
Exhaust Gas Muffler
Muffler Pipe 1 meter
Fuel tube 5 meters
Wiring harness with fuse box
Relay for activation of the interior heater fan
Package with terminals, fasteners, ties, bolts and nuts, clamps and other installation elements
Composition of heater HYDRONIC B4W SC.
- Combustion air blower with lid
- Combustion chamber with a flame tube
- Heat Exchanger
- Control block
- Circulation pump (integrated in the heater).
1 Casing
2 Combustion air blower with lid
3 Supercharger cover - the cover for the air blower in the combustion chamber
4 Combustion chamber with a flame tube
5 Heat Exchanger
6 Control unit
7 Motor cover - motor cover
8 Water pump - dismantling the cover of the heat exchanger with the water pump
12 Seal between the casing and the combustion air blower
13 O-ring 74 x 3
14 Pin electrode with cable harness
15 Branch pipe for pin electrode
16 Sheathing with sealing rings for the pin electrode
17 Seal between the combustion chamber and the heat pipe and heat exchanger
18 Sleeve holder
19 Bushing for fuel pipe from branch pipe
20 Combustion Control Sensor
21 Cable Sensor Harness
22 Control unit connector
23 Cable harness for water pump
24 Compression spring
25 Supercharger cover - the cover for the air blower in the combustion chamber
26 O-ring 14 x 2,6
27 O-ring 7.5 x 2
30 Flat head screw M4 x 10 (1x)
31 O-ring 5 x 1,5 DIN 37714
32 Screw Taptite M5 x 12 TORX (1x)
34 Bushing
35 Screw Taptite M5 x 35 TORX (6 for gasoline models, 5 for diesel engines)
36 Screw Taptite M5 x 25 TORX (2 for gasoline models, 3 for diesel engines)
37 Cylindrical screw Taptite M5 x 65 TORX (1x)
38 Screw Taptite M5 x 16 TORX (1x)
39 Screw Taptite M4 x 10 TORX (2x)
40 Countersunk head screw Taptite M5 x 12 TORX (3x)
The principle of operation of HYDRONIC B4W SC.
When enabled, the indicator light in the control lights up. The water pump starts. In accordance with the specified course of the program, the air supply pump to the combustion chamber, the glow plug and the metering pump that starts the combustion process are started. In the formation of a stable combustion process through
A certain time the pin electrode of the filament is turned off.
Depending on the desired heating temperature, the heating capacity of the heater is changed in steps: HIGH - SMALL - OFF (control pause). In this case, the temperature thresholds are hard-coded in the electronic control unit. If the demand for heating on the small "SMALL" is so small that the coolant temperature reaches 85 ° C, the heater goes to the "OFF" stage. The inertial run-out occurs for about 120 seconds, then the heating device switches on (the control pause). The indicator light is on, and the water pump also continues to operate during the control pause.
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