Product detailed description
Buderus Set for WB 1 VO S
Buderus is part of the Bosch Thermotechnik group and has been synonymous with reliable and energy-efficient heating and hot water technology for decades. German build quality, precision of connection dimensions, and long-term availability of spare parts and accessories are among the main reasons why Buderus boilers and system components are a popular choice among installers and investors across Europe.
The Set for WB 1 VO S is genuine Buderus accessory for hydraulically separating the primary circuit of a wall-mounted condensing boiler (WB series) from the secondary heating circuits. Wall-mounted boilers have a limited built-in circulation pump output and a limited tolerance to the higher hydraulic resistance of a larger system — a hydraulic separator or heat exchanger, together with its own pump group, therefore separate the boiler's flow from the flow in the building's distribution system and allow reliable operation even with a larger or more complex system.
The "S" designation is based on the composition of the set — it includes a DN25 hydraulic separator and a simpler, low version of the HS25/6 pump group (without the MM100 control module present in the version without the S designation). It is therefore a more basic, more compact variant of the set for one circuit.
What's included in the set
- DNA HYDRAULIC SEPARATOR, TRANSVERSE DN25 (8718599384), 1 pc
- DNA HS25/6 low (8718599198), 1 pc
- Hydraulic separator sensor 6.0 10K (7735502296), 1 pc
- WMS 1 bracket for quick-mount groups (67900470), 1 pc
Purpose and number of heating circuits
Based on the composition of its components, the set is designed for connecting one heating circuit (1 VO). The pump group (or base and mixing group) ensures circulation and temperature control in the heating circuit, the hydraulic separator/heat exchanger temperature sensor provides feedback to the boiler control system, and the quick-mount group mounting bracket (WMS) is used to attach the entire assembly to the wall or to the distribution system.
Installation
Connecting the hydraulic separator, pump groups and sensors is a professional installation task that fundamentally affects the behavior of the entire heating system. Installation, electrical wiring of the sensors, and setting of the control parameters must therefore be carried out by a certified installer or an authorized Buderus service technician, according to the project design and installation instructions.
Frequently Asked Questions
Why do I need a hydraulic separator or connecting set when I have a wall-mounted boiler?
Wall-mounted condensing boilers have a limited own flow rate and pressure reserve of the circulation pump. If the heating system is larger, has more circuits, or has a different hydraulic resistance, it is necessary to separate the boiler's primary circuit from the secondary heating circuits — this is exactly what this set is for.
Does the set also include the boiler itself?
No, the set is an accessory intended for hydraulic connection and circuit separation; the Buderus WB series boiler must be ordered separately.
What is the difference between the sets for 1 and 2 heating circuits?
The set for 1 VO includes one pump group and is intended where it is sufficient to separate one secondary circuit from the boiler. The set for 2 VO includes two pump groups (base and mixing) and the corresponding double bracket, allowing two separate heating circuits to be connected and independently controlled.
What is the difference between variant S and variant WT?
Variant S uses a classic flow-through hydraulic separator DN25 for hydraulic separation. Variant WT instead includes a plate heat exchanger (PWT 28), which also allows the medium in the primary and secondary circuits to be separated, for example in cases of different water quality requirements or greater distribution distances.
Who should install and connect the set?
Installation, sensor wiring, and control settings must be carried out by a certified installer or an authorized Buderus service technician, in accordance with the project documentation and installation instructions.
Does the set include a control unit or control module?
The set includes a hydraulic separator/heat exchanger temperature sensor, which connects to the boiler's control system or a higher-level control unit. The controller itself (e.g. Logamatic) is included with the boiler or purchased separately depending on the specific configuration.
Warranty and service
The components of the set are covered by the standard warranty period provided by the manufacturer Bosch Thermotechnik GmbH / Buderus and the seller in accordance with the applicable terms and conditions. To claim the full warranty on the boiler and accessories, we recommend having the installation and commissioning carried out by an authorized Buderus service partner and keeping a service log for the equipment. If you have any questions about choosing the right set for your specific boiler type and output, please do not hesitate to contact us, we will be happy to help.
