Hot water generator HWE 13/21-42kW
The Kärcher water heater is an electric hot water generator with a powerful 42 kW heating output that can be flexibly installed on the high-pressure side of a high-pressure cleaner.
The Kärcher instantaneous water heater is an electric high-pressure hot water generator that heats water directly under high pressure while delivering a constant temperature. It is suitable for stationary high-pressure cleaners with a water flow rate of up to 1,300 l/h and a pressure of up to 210 bar, but can also be used with mobile machines. Installation takes place on the high-pressure side of the high-pressure unit. The water heater has a heating output of 42 kW and consumes power only when hot water is required. Since no exhaust gases are produced—unlike with oil or gas burners—the unit operates with zero local emissions. Furthermore, there are no open flames, enabling operation in locations where combustion-driven burners are not permitted. At a water flow rate of 13 l/min (800 l/h), the water temperature is increased by +45 °C. The maximum achievable temperature is 95 °C with an inlet water temperature of 50 °C. The unit features a clear control design and a stainless steel construction comprising the frame, cover, and electric heating coil.
Features and benefits
High electrical heating output of 42 kW
Hot water is available within a few seconds. The constant work temperature is 60 °C when the water flow is 800 l/h and the inlet temperature is 15 °C.
High flexibility
Suitable for stationary and mobile high-pressure cleaners with a flow rate of up to 1300 l/h and a pressure of 210 bar. The electric water heater is installed on the high-pressure side of a high-pressure cleaner and only heats when hot water is needed. The water heater can be used both outdoors and indoors.
Zero Local Emissions and Clear Control Design
The water heater works exclusively electrically and does not use conventional energy such as diesel or gas. The water is heated electrically in the machine, which means that, unlike oil or gas burners, no exhaust gases are produced. No open fire, making it suitable for use anywhere where it is difficult or prohibited to emit exhaust from a burner.Demand-based energy consumption with zero standby losses
- Energy consumption occurs exclusively during water draw-off, eliminating the need for continuous hot water storage required by low-pressure boilers
- It is only heated when hot water is required.
- Simple plug-and-play installation and straightforward operation.
Maximum safety and simple operation
- Includes flow switch to protect against dry running.
- With safety thermostat to prevent the formation of vapour.
- The required water temperature can be set using a temperature controller.
Specifications
Technical data
| Number of current phases (Ph) | 3 |
| Voltage (V) | 400 - 400 |
| Frequency (Hz) | 50 - 60 |
| Flow rate (l/h) | max. 1300 |
| Working pressure (bar) | max. 210 |
| Connected load (A) | 61 |
| Heating output (kW) | 42 |
| Water inlet | 3/8″ |
| Protection (A) | 63 |
| Inlet temperature (°C) | max. 70 |
| Max. work temperature (°C) | max. 95 |
| Weight (with accessories) (kg) | 33,2 |
| Weight incl. packaging (kg) | 36,2 |
| Dimensions (L × W × H) (mm) | 630 x 500 x 160 |
Equipment
- Dry-running protection
- Temperature setting
- Safety thermostat
- Frame and cover: Stainless steel
Application areas
- Electric hot water generator for exhaust-free operation indoors
- In production halls and workshops where hot water is needed
- Indoor public spaces where hot water is needed
- Ideal for cleaning applications in the food industry
- Industry
- Agriculture
