BOSCH TR4001 15/18/21 ESOB Tankless Water Heater, 21 kW, Three-Phase
Hot water the moment you open the tap, with electronic control and A energy class.
The BOSCH TR4001 15/18/21 ESOB heats water as it flows, with no storage tank taking up space in the bathroom or kitchen. It mounts vertically above the sink, runs on a 400 V three-phase supply and is a pressurised unit, so it can feed more than one tap.
Selectable output: 15, 18 or 21 kW
The setting is made during installation, matched to the cable cross-section and the fuse in the property. One and the same unit therefore fits an older electrical installation as well as a new one with full capacity.
Electronic control keeps the temperature steady
The controller tracks the flow and delivers exactly the power needed for the set temperature. The water no longer swings between hot and lukewarm when mains pressure changes.
Up to 11.6 l/min of hot water for shower and kitchen
That flow is measured heating water from 12 °C to 38 °C at full output; raising it to 60 °C gives 6.2 l/min. It is enough for a shower and a sink in a single household.
Compact body, 48.4 x 23.6 x 10.6 cm
Just over 10 cm deep, it sits above the basin without getting in the way. Water connections are at the bottom, which makes replacing an older tankless heater straightforward.
Specifications
Main
Power and supply
Performance
Dimensions
Main
Warranty
| TYPE | PRESSURIZED |
| NOMINAL POWER KW | 21.0 KW |
| Brand | BOSCH |
| MODEL: | TR4001 15/18/21 ESOB |
| KIND: | ELECTRIC |
| HEIGHT: | 48.40 см |
| WIDTH: | 23.60 см |
| DEPTH: | 10.60 см |
| TYPE: | PRESSURIZED |
| ELECTRICAL POWER TYPE: | THREE PHASE |
| THERMOREGULATOR: | ЕЛЕКТРОНЕН |
| NOMINAL POWER KW: | 21.0 KW |
| ENERGY CLASS: | A |
| ANNUAL ENERGY CONSUMPTION: | 476 |
| WARRANTY: | 24 MONTHS |
| EAN | 4062321796877 |
