SHW 400 ACE - Boiler STIEBEL ELTRON - Free user manual and instructions
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| Product Type | Electric storage water heater |
| Brand | Stiebel Eltron |
| Model | SHW 400 ACE |
| Capacity | 400 liters |
| Dimensions (height × diameter) | 1740 mm × 810 mm |
| Empty weight | 130 kg |
| Power supply voltage | 230 V / 400 V three-phase |
| Electrical power | 2.0 to 6.0 kW (configurable) |
| Temperature range | 10 °C to 85 °C |
| Control | Electronic with digital display |
| Programming | Daily and weekly |
| Anti-legionella function | Yes (programmable) |
| Anti-freeze protection | Integrated |
| Overheating safety | Safety thermostat with circuit breaker |
| Tank material | Enameled steel |
| Corrosion protection anode | Magnesium (replaceable) |
| Routine maintenance | Annual draining and anode inspection |
| Descaling | Every 2 to 5 years depending on water hardness |
| Repairability index | 7.5/10 |
| Available spare parts | Heating element, thermostat, anode, electronic board |
| Energy efficiency class | C (according to EU regulation) |
| Water connection | 3/4" Male |
| Max. operating pressure | 10 bar |
| Operating weight (full) | Approximately 530 kg |
Frequently Asked Questions - SHW 400 ACE STIEBEL ELTRON
How to start the SHW 400 ACE water heater?
Plug the appliance into a suitable outlet (230 V or 400 V three-phase). Set the main switch to position I. The electronic control starts automatically. Set the desired temperature using the + and - buttons on the display.
What is the ideal temperature for daily use?
It is recommended to set the temperature between 55 °C and 65 °C for a good balance between comfort and energy savings, while limiting the risk of burns. Use the anti-legionella function at a minimum of 65 °C once a week.
How to drain the water heater for maintenance?
Turn off the power supply. Close the cold water inlet. Open a hot water tap to avoid vacuum. Connect a hose to the drain valve at the bottom of the appliance and open it. Let it run until the tank is empty.
How often should the SHW 400 ACE be descaled?
The frequency depends on water hardness. In very hard water, every 2 years; in soft water, every 5 years. If you notice a drop in performance or abnormal noises, descaling is necessary.
What to do in case of water leakage?
Immediately turn off the power supply and water inlet. Contact a professional installer. Check if the leak comes from the connections (tighten) or the tank (replace the appliance). Serious leaks require specialist intervention.
The appliance makes a sizzling noise, is that normal?
A slight noise during heating is normal (material expansion). Pronounced sizzling or clicking may indicate scale deposits on the heating element. Have the appliance descaled. If the noise persists, contact customer service.
How to reset the safety thermostat?
The safety thermostat activates in case of overheating. Let the water cool down. Remove the front cover, locate the reset button (often orange) and press it with a screwdriver. If the problem persists, a part is defective.
What is the average power consumption?
For a 400 L water heater, consumption depends on usage and temperature. On average, expect 2500 to 4000 kWh per year for a family of 4. Use programming to reduce consumption during off-peak hours.
Where to find spare parts?
Spare parts (heating element, magnesium anode, thermostat, electronic board) are available from authorized Stiebel Eltron dealers or online. Use the exact reference of your appliance. The repairability index of 7.5/10 ensures good availability.
What is the lifespan of this water heater?
With regular maintenance (draining, anode inspection every 2 years), the average lifespan is 10 to 15 years. Descaling and replacing the anode significantly extend the appliance's longevity.
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USER MANUAL SHW 400 ACE STIEBEL ELTRON
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Product information
Brand : STIEBEL ELTRON
Model : SHW 400 ACE
Category : Boiler