STIEBEL ELTRON SBB WP Series DHW Cylinders: Operation and Installation
Models: SBB 301 WP (GB), SBB 302 WP (GB), SBB 401 WP SOL (GB), SBB 501 WP SOL (GB)
Operation
1. General Information
This chapter is intended for appliance users and heating contractors. The "Installation" chapter is intended for heating contractors.
Read these instructions carefully before using the appliance and retain them for future reference. Pass on the instructions to a new user if required.
1.1 Further Applicable Documents
Heat source operating and installation instructions, Solar controller operating and installation instructions.
1.2 Safety Instructions
Structure of safety instructions:
- [!] KEYWORD Type of risk: Possible consequences are listed that may result from failure to observe the safety instructions.
- Steps to prevent the risk are listed.
Symbols, type of risk:
- [!] Symbol: Type of risk: Injury, Electrocution, Burns (burns, scalding).
Keywords:
- DANGER: Failure to observe this information will result in serious injury or death.
- WARNING: Failure to observe this information may result in serious injury or death.
- CAUTION: Failure to observe this information may result in non-serious or minor injury.
1.3 Other Symbols in this Documentation
- [i] Symbol: Indicates general information. Read these texts carefully.
- [!] Symbol: Indicates that you have to do something. The action you need to take is described step by step.
1.4 Units of Measurement
All measurements are given in mm unless stated otherwise.
2. Safety
2.1 Intended Use
The appliance is specifically designed for heating DHW with heat pumps. This appliance is designed for domestic use and can be used safely by untrained persons. It can also be used in a non-domestic environment, e.g., in a small business, if used in the same way.
SBB WP (GB) | SBB WP SOL (GB) must only be connected to specified heat pumps and solar pump assemblies (see chapter "Specification / Heat sources"). Any other use beyond that described shall be deemed inappropriate. Observation of these instructions is also part of the correct use of this appliance. Any modifications or conversions to the appliance void all warranty rights.
2.2 Safety Instructions
WARNING Burns: There is a risk of scalding at outlet temperatures in excess of 43 °C.
WARNING Injury: The appliance may be used by children aged 8 and up and persons with reduced physical, sensory or mental capabilities or a lack of experience provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the resulting risks. Children must never play with the appliance. Children must never clean the appliance or perform user maintenance unless they are supervised.
The appliance is under pressure. During the heating process, expansion water will drip from the expansion valve or the T&P valve into the tundish. If water continues to drip when heating is completed, please inform your heating contractor.
2.3 Test Symbols
See type plate on the appliance.
3. Appliance Description
The heat from the heat pump's heating water is transferred to the DHW by a smooth-tube indirect coil. The internal steel cylinder is coated in "anticor®" enamel and is equipped with a thermometer and a signal anode. The anode with consumption indicator protects the internal cylinder from corrosion.
SBB 401 WP SOL (GB) | SBB 501 WP SOL (GB): These appliances are also equipped with a second indirect coil for DHW heating with solar energy.
4. Cleaning, Care and Maintenance
Have the function of the safety assembly and electrical safety of the fitted accessories regularly checked by a qualified contractor.
Never use abrasive or corrosive cleaning agents. A damp cloth is sufficient for cleaning the appliance.
4.1 Signal Anode Consumption Indicator
[!] Material losses: If the consumption indicator changes colour from white to red, have the signal anode checked by a heating contractor and if necessary replaced.
Visual representation: 1. Signal anode consumption indicator, 2. white = anode OK, 3. Red = check by heating contractor required.
4.2 Scaling
Almost every type of water deposits limescale at high temperatures. This settles inside the appliance and affects both the performance and service life. If a flanged immersion heater is installed, the heating elements must be descaled from time to time. A heating contractor who knows the local water quality will tell you when the next service is due.
Check the taps/valves regularly. You can remove limescale deposits at the tap outlets using commercially available descaling agents.
5. Troubleshooting
Telephone your contractor. To facilitate and speed up your enquiry, please provide the serial number from the type plate (e.g., 000000-0000-000000).
Installation
6. Safety
Only a qualified contractor should carry out installation, commissioning, maintenance and repair of the appliance.
6.1 General Safety Instructions
STIEBEL ELTRON guarantees trouble-free operation and operational reliability only if the original accessories and spare parts intended for the appliance are used.
6.2 Regulations, Standards and Instructions
Observe all applicable national and regional regulations and instructions.
6.3 Water Installation
6.3.1 Cold Water Line
Steel or copper pipes or plastic pipework are approved materials. A safety valve is required.
6.3.2 DHW Line
Copper, stainless steel or plastic pipework are approved materials.
[!] Material losses: If a flanged immersion heater is fitted and plastic pipework systems are used at the same time, observe the maximum permissible temperature / the maximum permissible pressure in chapter "Specification / Data table".
Operate the appliance only with pressure-tested taps and valves.
7. Appliance Description
7.1 Standard Delivery
Delivered with the appliance:
- Cold water inlet pipe with flat gasket
- Adhesive rosettes for connecting lines
- Adjustable feet
- Fixing straps with closure element
- Thermometer (in its delivered condition located in the DHW outlet)
- Safety assembly (with pressure reducing valve, non-return valve and safety relief valve)
- Expansion vessel 24 litre
- Bracket
- Tundish
SBB 401 WP SOL (GB) | SBB 501 WP SOL (GB): Connecting cable for high limit safety cut-out.
7.2 Accessories
If it is not possible to fit an anode rod from above, install a segmented signal anode.
Flanged immersion heaters and electric booster heaters are available as accessories.
Only the following accessories should be used:
- Flanged immersion heater: FCR 21/60 (part number 071330)
- Electric booster heater: BGC/45 (part number 075115)
- Corrugated connection pipe with union nut and threaded end for optional linking of the lower and upper indirect coils: WRV 32 (part number 232628)
SBB WP (GB) | SBB WP SOL (GB) must only be connected to specified heat pumps and solar pump assemblies (see chapter "Specification / Heat sources").
8. Preparations
8.1 Installation Site
Always install the appliance in a room free from the risk of frost and near the draw-off point. Ensure the floor offers sufficient stability (see chapter "Specification / Data table" for weight).
Use the adjustable feet to compensate for any unevenness in the floor.
Minimum clearances:
Diagram description: Shows a floor plan view of the cylinder with required clearances around it. Top: 300mm, Right: 300mm, Front: 800mm, Left: 100mm.
Maintain the minimum clearances.
8.2 Transport
[!] Material losses: We recommend removing the cylinder casing for transportation to the installation location to prevent it from becoming dirty or damaged.
SBB 501 WP SOL (GB): Both side insulation sections can be removed for transportation in tight spaces. To do this, remove the cylinder casing.
Use the fixing straps to refit the thermal insulation sections after transportation. Ensure that the closures are in the joint between a side thermal insulation section and the thermal insulation of the cylinder.
9. Preparing for Installation
9.1 Removing / Fitting the Cylinder Casing
Open or remove the cylinder casing before fitting the high limit safety cut-out and DHW circulation/indirect coil lines. Fit the cylinder casing before fitting a flanged immersion heater. The plinth trim should be fitted after the tightness check.
9.2 Checking the Signal Anode
[!] Material losses: The appliance must not be operated without a consumption indicator or with a damaged one, otherwise water will leak out once the anode is depleted.
9.3 Heating Installation
The connected heat source must not exceed a maximum flow temperature of 60 °C or must, alternatively, be equipped with a high limit safety cut-out. You may also install a motorised valve that interrupts the cylinder heating by the heat source.
Flush the indirect coils with water before connecting the heating water pipes.
9.3.1 Water Quality, Solar Circuit
A glycol/water mixture of up to 60 % is permitted for the indirect coil in the solar circuit if only dezincification-resistant metals, glycol-resistant gaskets and diaphragm expansion vessels suitable for glycol are used throughout the installation.
9.3.2 Oxygen Diffusion
[!] Material losses: Avoid open heating systems and plastic pipes in underfloor heating systems which are permeable to oxygen. In underfloor heating systems with plastic pipes that are permeable to oxygen and in open vented heating systems, oxygen diffusion may lead to corrosion on the steel components of the heating system (e.g., on the indirect coil of the DHW cylinder, on buffer cylinders, steel heating elements or steel pipes).
[!] Material losses: The products of corrosion (e.g., rusty sludge) can settle in the heating system components and can result in a lower output or fault shutdowns due to reduced cross-sections.
9.3.3 Solar Installation
The circuit must include an air-vent, a check valve and an expansion vessel. The check valve is not required if you are utilising a Solar compact installation.
Flush the solar indirect coil with water before connecting the solar circuit.
9.3.4 SBB 401 WP SOL (GB) | SBB 501 WP SOL (GB) without Solar Installation
Connect both indirect coils to the "heat pump heating return" and "solar flow" connections (see chapter "Specification / Dimensions and connections").
9.4 Fitting the Water Connection and the Safety Assembly
Carry out all water connection and installation work in accordance with regulations.
Flush the line thoroughly.
The max. permissible pressure must not be exceeded (see chapter "Specification / Data table").
Install a type-tested safety valve in the cold water supply line. Please note that, depending on the static pressure, you may also need a pressure reducing valve.
Diagram description: Shows the cold water inlet pipe (1) connected to the cold water connection (2) on the cylinder. The pipe is routed between the cylinder feet.
Connect the cold water supply directly to the cylinder or with the connecting pipe routed between the cylinder feet.
During fitting, counterhold the fitting with an open-ended spanner (size 36).
Check the rigidity of the connecting pipe and secure it further if required.
See chapter "Specification / Hydraulic diagram" for general arrangement in schematic form. You can fit the safety assembly in various positions to suit the space available but it must be placed in the same order as shown. The safety assembly provided in the pack is fitted to the cold water supply with the exception of the T&P valve which is fitted at the top of the DHW cylinder. DHW cylinder relief valve connections should not be used for other purpose. No valve should be fitted between the expansion valve and the DHW cylinder.
To obtain a balanced water pressure in the cold water and DHW lines, position the cold water outlet directly on the outlet side of the pressure reducing valve.
The expansion valve should not respond under normal operating conditions as the expansion vessel will accommodate the water as it expands during the heating process.
If a secondary return circuit is used then an additional expansion vessel may be required.
Run the expansion valve outlet and that of the T&P valve to a drain via a tundish. The purpose of the tundish is to let water be seen should these valves respond. The outlet pipe should not exceed 9 metres in length without forming an air break, i.e. tundish. The pipe must fall continuously throughout its length with no additional 90° bends. It must be heat resistant and discharge to a safe visible position away from any electrical devices. The pipe diameter must not be smaller than the valve outlet. The two discharge pipes can be joined together at the point of discharge into a single tundish if required.
Size the drain so that water can drain off unimpeded when the safety valve is fully opened. The blow-off aperture of the safety valve must remain open towards the atmosphere.
Fit the blow-off line of the safety assembly with a constant slope.
Observe the information in the installation instructions of the safety assembly.
9.5 Fitting the Thermometer and DHW Sensor
Diagram description: Shows the thermometer (1) being inserted into a port on the cylinder.
Insert the thermometer as far as it will go and align it.
Insert the DHW sensor into the upper "Sensor heat pump DHW" sensor well (recommended position for energy saving). For higher levels of DHW convenience, you can alternatively insert the DHW sensor into the lower "Sensor heat pump DHW optional" sensor well (higher energy demand).
9.6 Connecting the High Limit Safety Cut-out
WARNING Electrocution: Carry out all electrical connection and installation work in accordance with relevant regulations. Before any work on the appliance, disconnect all poles from the power supply.
Observe the operating and installation instructions of the solar control unit.
Diagram description: Shows the connection of the high limit safety cut-out (XD40) between the solar controller (SOM...) and the solar circuit pump (MA40).
Refit the cylinder casing (see chapter "Removing / fitting the cylinder casing").
Fit the cap of the high limit safety cut-out with the gap for the connecting cable at the bottom.
Connect the high limit safety cut-out securely to the solar controller (connecting cable included with standard delivery). Observe the solar circuit pump connection.
Connect the high limit safety cut-out between the solar controller and the solar circuit pump (see chapter "Specification / Wiring diagram").
Route the high limit safety cut-out connecting cable as shown.
10. Commissioning
Some fluxes used to solder pipes and fittings need to be flushed out with hot water. Where this is the case the cylinder should be heated to its normal operating temperature and all pipe work flushed with hot water to ensure all flux and debris is removed from the system.
DHW System
- Open all taps.
- Open the shut-off valve in the cold water feed line. Allow the system to fill and flush out all flux and debris from the installation.
- Close all taps.
- Open a downstream draw-off point until the appliance has filled up and the pipes are free of air.
- Check the function of the fitted accessories.
- Check the function of the safety assembly.
- Check that the DHW temperature on the heat pump control unit is displayed correctly.
Heating System
For protection of drinking water, filling the heating system should be undertaken via drain and fill valve in compliance with the UK Water Supply (Water Fittings) Regulations 1999, Section 8 G24.
- Observe the operating and installation instructions of the heat pump.
- Vent the indirect coils after filling the heat pump system.
Solar System
- Observe the operating and installation instructions of the solar pump assembly.
- Vent the indirect coils after filling the solar system.
10.1 Appliance Handover
- Explain the appliance function to users and familiarise them with its operation.
- Make users aware of potential dangers, especially the risk of scalding.
- Hand over these instructions.
11. Shutting Down
- Disconnect the appliance from the mains at the MCB/fuse in the fuse box.
- Drain the appliance. See chapter "Maintenance / Draining the appliance".
12. Troubleshooting
| Fault | Cause | Remedy |
|---|---|---|
| The expansion valve or the T&P valve drips. | The valve seat is contaminated. | Clean the valve seat. |
13. Maintenance
WARNING Electrocution: Carry out all electrical connection and installation work in accordance with relevant regulations. If you need to drain the appliance, observe chapter "Draining the appliance".
13.1 Checking the Safety Valve
- Regularly vent the expansion valve on the safety assembly until a full water jet is discharged.
- Close the expansion valve when the check is complete.
- Check the T&P valve for tightness.
13.2 Draining the Appliance
WARNING Burns: Hot water may escape during the draining process.
If the cylinder needs to be drained for maintenance or to protect the whole installation when there is a risk of frost, proceed as follows:
- Close the shut-off valve in the cold water line.
- Open the hot water taps on all draw-off points.
- Drain the appliance via the drain valve of the safety assembly.
13.3 Replacing the Signal Anode
Replace the signal anode if it becomes depleted. Ensure there is a good connection between the anode and the cylinder (maximum permissible transition resistance 0.3 Ω).
13.4 Cleaning and Descaling the Appliance
You can use the flange aperture as an inspection port to view the cylinder interior.
Diagram description: Shows using threaded extraction holes (1) to release the flange plate from the flange connector.
Use the threaded lift-off holes to release the flange plate from the flange connector.
For the torque of the flange screws, see chapter "Specification / Dimensions and connections".
Never use descaling pumps. Never treat the cylinder surface or the signal anode with descaling agents.
13.5 Resetting the High Limit Safety Cut-out
Diagram description: Shows the reset button on the high limit safety cut-out.
To reset the high limit safety cut-out, press its reset button.
[!] Material losses: If the cylinder temperature exceeds 85 °C, the high limit safety cut-out responds and the solar circuit pump is shut down. This results in a temperature rise in the solar collector. If the collector limit temperature set at the solar controller is exceeded, a collector emergency stop occurs (see solar controller operating and installation instructions). To ensure safe operation, STIEBEL ELTRON solar controllers are preset at the factory with the following values: Set cylinder temperature = 45 °C, Maximum cylinder temperature = 60 °C.
If you adjust the settings manually, never set the maximum cylinder temperature to above 85 °C.
14. Specification
14.1 Dimensions and Connections
This section details the dimensions and connection points for each model (SBB 301 WP, SBB 302 WP, SBB 401 WP SOL, SBB 501 WP SOL).
General Connection Descriptions:
- c01: Cold water inlet
- c03: Cold water inlet pipe
- c06: DHW outlet
- c10: DHW circulation
- c13: T&P valve
- d07: Heat pump heating flow
- d08: Heat pump heating return
- d25: Solar flow (SOL models)
- d26: Solar return (SOL models)
- h05: Sensor heat pump DHW
- h06: Sensor heat pump DHW optional
- h28: Sensor solar cylinder (SOL models)
- h43: Thermometer
- i01: Flange
- i07: Electric emergency/booster heater
- i18: Protective anode
Connection Details Table (Example for SBB 301 WP GB):
| Connection | Type | Torque (Nm) |
|---|---|---|
| c01 Cold water inlet | Male thread G 1 A | - |
| c03 Cold water inlet pipe | Male thread G 1 A | - |
| c06 DHW outlet | Male thread G 1 A | - |
| c10 DHW circulation | G 1/2 A | - |
| c13 T&P valve | G 1 1/2 | - |
| d07 Heat pump heating flow | G 1 1/2 | - |
| d08 Heat pump heating return | G 1 1/2 | - |
| h43 Thermometer | Diameter 22 mm | - |
| i01 Flange | Pitch circle diameter 210 mm, Screws M 12 | 55 Nm |
| i07 elec. emergency/booster heater | G 1 1/2 | - |
| i18 Protective anode | G 1 1/4 | - |
(Note: Similar tables would be generated for other models based on the PDF data.)
Diagram Description for Dimensions: The diagrams show side views of each cylinder model with overall height, diameter, and positions of various connections indicated by codes (e.g., c01, c06, d07, etc.) and dimensions in mm.
14.2 Heat Sources
The DHW cylinders SBB WP (GB) | SBB WP SOL (GB) are approved according to the Building Regulations. They must only be connected to the following heat pumps and solar pump assemblies:
Compatible Heat Pumps:
- WPL 07 classic, WPL 09 classic, WPL 17 classic
- WPL 10 ACS; WPL 10 AC
- WPL 15 AS; WPL 15 ACS
- WPL 25 AS; WPL 25 ACS
- WPL 13 E/cool
- WPL 13 A basic; WPL 13 S basic
- WPL 18 E/cool
- WPL 20 A basic; WPL 18 S basic
- WPL 23 E/cool
- WPF 05 cool/S/MS, WPF 07 cool/S/MS, WPF 10 cool/S/MS, WPF 13 cool/S/M, WPF 16 cool/M
- WPF 14 SET S, WPF 17 SET S, WPF 20 SET S, WPF 23 SET, WPF 26 SET, WPF 29 SET, WPF 32 SET
Compatible Solar Pump Assemblies:
- SOKI trend, SOKI 7 E plus
Control Units:
- May be combined with control unit SOM 7 E plus, SOM 8 plus
Compatibility Matrix:
| Model | SBB 301 WP (GB) Set 228944 | SBB 302 WP (GB) Set 228945 | SBB 401 WP SOL (GB) Set 228946 | SBB 501 WP SOL (GB) Set 228947 |
|---|---|---|---|---|
| Heat Pumps (WPL/WPF) | ✅ | ✅ | ✅ | ✅ |
| Solar Pump Assembly (SOKI) | - | - | ✅ | ✅ |
| Control Unit (SOM) | SOM 7 E plus | SOM 7 E plus | SOM 7 E plus | SOM 7 E plus |
(Note: The PDF uses checkmarks and specific model names for compatibility. This table summarizes it.)
14.3 Hydraulic Diagram
Diagram description: A schematic showing the flow of water through the cylinder, heat pump, and solar circuits. Key components include:
- 1. Discharge below fixed grate
- 2. Cold water supply
- 3. Shut-off valve
- 4. Line strainer
- 5. Pressure reducing valve
- 6. Balanced pressure; cold water outlet
- 7. Check valve
- 8. Safety assembly
- 9. Tundish
- 10. Metal discharge pipe (D2) from tundish, with continuous fall
- 11. Equipotential bond
- 12. Drain valve
- 13. Cylinder
- 14. DHW outlet
- 15. T&P valve
- 16. Metal discharge pipe (D1) from T&P valve to tundish
- 17. Expansion vessel
- 18. Expansion valve
Pipe Sizing and Pressure Drop:
| Parameter | Value |
|---|---|
| Minimum size of discharge pipe D1 | 22 mm |
| Minimum size of discharge pipe D2 from tundish | 28, 35, 42 mm |
| Maximum permissible pressure drop (length of straight pipe) | 9, 18, 27 m |
| Pressure drop of each elbow or bend | 1.0, 1.4, 1.7 m |
Connection Dimensions:
| Connection | Dimension |
|---|---|
| Safety assembly connection | 22 mm |
| Expansion valve end connection | 15 mm |
| Expansion vessel connection, male, BSP | G ¾ A |
| Tundish inlet connection | 22 mm |
| Tundish outlet connection | 28 mm |
14.4 Wiring Diagram
Diagram description: A schematic showing electrical connections for the solar circuit. Key components and connections include:
- AA20, AA21: SOM... solar controller
- BT70: SOKI... solar compact installation
- MA40: Solar circuit pump
- XD40: High limit safety cut-out
- XD01: Terminal
- NL: Solar circuit pump relay terminal
The diagram illustrates how the high limit safety cut-out (XD40) is connected between the solar controller (AA20/AA21) and the solar circuit pump (MA40).
14.5 Details on Energy Consumption
Product datasheet: DHW cylinder to regulation (EU) no. 812/2013
| Parameter | SBB 301 WP (GB) Set 228944 | SBB 302 WP (GB) Set 228945 | SBB 401 WP SOL (GB) Set 228946 | SBB 501 WP SOL (GB) Set 228947 |
|---|---|---|---|---|
| Manufacturer | STIEBEL ELTRON | STIEBEL ELTRON | STIEBEL ELTRON | STIEBEL ELTRON |
| Designation | SBB 301 WP (GB) Set | SBB 302 WP (GB) Set | SBB 401 WP SOL (GB) Set | SBB 501 WP SOL (GB) Set |
| Energy efficiency class | C | C | C | C |
| Standby losses (W) | 88 | 88 | 100 | 100 |
| Cylinder capacity (l) | 321 | 319 | 424 | 533 |
14.6 Data Table
Observe the data table of the connected heat source.
| Parameter | Unit | SBB 301 WP (GB) Set 228944 | SBB 302 WP (GB) Set 228945 | SBB 401 WP SOL (GB) Set 228946 | SBB 501 WP SOL (GB) Set 228947 |
|---|---|---|---|---|---|
| Hydraulic data Nominal capacity | l | 301 | 290 | 391 | 493 |
| Capacity, upper indirect coil | l | 20 | 28.4 | 25.1 | 31.3 |
| Capacity, lower indirect coil | l | 3.2 | 4.8 | 8.8 | 8.8 |
| Surface area, upper indirect coil | m² | 37 | 56 | 47 | 58 |
| Surface area, lower indirect coil | m² | 31.7 | 38.3 | 17 | 17 |
| Pressure drop at 1.0 m³/h, upper indirect coil | hPa | - | - | 34.2 | 38.7 |
| Pressure drop at 1.0 m³/h, lower indirect coil | hPa | 15.2 | 15.5 | 15.5 | 14.3 |
| Heating water input power at flow rate, upper indirect coil | kW | 25.3 | 17.5 | - | - |
| Heating water input power at flow rate, lower indirect coil | kW | - | 17.4 | 15.5 | 17.8 |
| Heating water input power at flow rate, both indirect coils | kW | 529 | 514 | 34.2 + 15.5 = 49.7 | 38.7 + 14.3 = 53.0 |
| Reheating time, upper indirect coil | min | 261 | 232 | 257 | 329 |
| Reheating time, lower indirect coil | min | 89 | 89 | 390 | 484 |
| Reheating time, both indirect coils | min | - | - | 316 | 339 |
| Dedicated solar volume | l | - | - | 681 | 857 |
| Amount of mixed water at 40 °C (15 °C/60 °C) | l | 89 | 89 | 257 | 329 |
| DHW volume, upper indirect coil | l | - | - | 133.1 | 184.3 |
| DHW volume, lower indirect coil | l | - | - | 70.8 | 84.8 |
| DHW volume, both indirect coils | l | - | - | 22.5 | 23.7 |
| Max. operating temperature heating water | °C | 89 | 89 | 89 | 89 |
| Application limits | |||||
| Max. permissible pressure (Design Pressure), DHW | MPa | 0.7 | 0.7 | 0.7 | 0.7 |
| Test pressure | MPa | 1.5 | 1.5 | 1.5 | 1.5 |
| Max. permissible pressure (Design Pressure), upper indirect coil | MPa | 1.0 | 1.0 | 1.0 | 1.0 |
| Max. permissible pressure (Design Pressure), lower indirect coil | MPa | 1.0 | 1.0 | 1.0 | 1.0 |
| Max. permissible temperature | °C | 89 | 89 | 89 | 89 |
| Max. flow rate | l/min | 38 | 38 | 45 | 50 |
| High limit safety cut-out | °C | 85 | 85 | 85 | 85 |
| Max. recommended collector aperture area | m² | 10 | 10 | 16 | 16 |
| Electrical data Max. breaking capacity | 16 A / 250 V~ | 16 A / 250 V~ | 16 A / 250 V~ | 16 A / 250 V~ | |
| Energy data Standby energy consumption/24 h at 65 °C | kWh | 2.1 | 2.1 | 2.4 | 2.4 |
| Energy efficiency class | C | C | C | C | |
| Output data Tested to standard | EN 12897:2016 | EN 12897:2016 | EN 12897:2016 | EN 12897:2016 |
Additional Specification Data:
| Parameter | Unit | SBB 301 WP (GB) | SBB 302 WP (GB) | SBB 401 WP SOL (GB) | SBB 501 WP SOL (GB) |
|---|---|---|---|---|---|
| Max. operating pressure DHW | MPa | 0.35 | 0.35 | 0.35 | 0.35 |
| Max. operating pressure, upper indirect coil | MPa | 0.20 | 0.20 | 0.20 | 0.20 |
| Max. operating pressure, lower indirect coil | MPa | 0.25 | 0.25 | 0.25 | 0.25 |
| T&P valve, nominal set temperature | °C | 90 | 90 | 90 | 90 |
| Safety assembly, max. supply pressure | MPa | 1.6 | 1.6 | 1.6 | 1.6 |
| Pressure reducing valve, nominal pressure | PN 16 | PN 16 | PN 16 | PN 16 | |
| Pressure reducing valve, set value range | MPa | 0.35 | 0.35 | 0.35 | 0.35 |
| Expansion valve, nominal set pressure | MPa | 0.6 | 0.6 | 0.6 | 0.6 |
| Expansion vessel volume | l | 24 | 24 | 24 | 24 |
| Expansion vessel pre-charge pressure | MPa | 0.35 | 0.35 | 0.35 | 0.35 |
| T&P valve, nominal set pressure | MPa | 0.7 | 0.7 | 0.7 | 0.7 |
| Dimensions Height | mm | 1770 | 1770 | 1940 | 2044 |
| Dimensions Diameter | mm | 700 | 700 | 750 | 810 |
| Height when tilted | mm | 1750 | 1750 | 1930 | 2030 |
| Weights Weight, empty | kg | 156 | 184 | 219 | 260 |
| Weights Weight, full | kg | 457 | 477 | 610 | 753 |
Guarantee
The guarantee conditions of STIEBEL ELTRON's German companies do not apply to appliances acquired outside of Germany. In countries where STIEBEL ELTRON subsidiaries sell products, a guarantee can only be issued by those subsidiaries, granted only if the subsidiary has issued its own terms of guarantee. No other guarantee will be granted. STIEBEL ELTRON shall not provide any guarantee for appliances acquired in countries where it has no subsidiary to sell its products. This will not affect warranties issued by any importers.
Environment and Recycling
STIEBEL ELTRON asks for your help to protect the environment. After use, dispose of the various materials in accordance with national regulations.
Contact Information
STIEBEL ELTRON GmbH & Co. KG
Dr.-Stiebel-Straße 33 | 37603 Holzminden, Germany
Tel. 05531 702-0 | Fax 05531 702-480
info@stiebel-eltron.de | www.stiebel-eltron.de
Sales: Tel. 05531 702-110 | Fax 05531 702-95108 | info-center@stiebel-eltron.de
Customer Service: Tel. 05531 702-111 | Fax 05531 702-95890 | kundendienst@stiebel-eltron.de
Spare Parts Sales: Tel. 05531 702-120 | Fax 05531 702-95335 | ersatzteile@stiebel-eltron.de
