Installation Guide for Viessmann Vitosol 200-FM Connection Fittings
A comprehensive installation guide for Viessmann Vitosol 200-FM connection fittings. This manual provides detailed parts lists, component descriptions, and piping layout diagrams for DHW solar packs and Solar-Divicon systems.
Quick answers from the manual
Quick answer
- This guide provides installation instructions and parts lists for connecting Viessmann Vitosol 200-FM flat plate collectors, including piping layouts for DHW solar packs and Solar-Divicon systems. p. 1, 8, 11
Key actions
- Lubricate O-rings p. 3, 6
- Maintain bend radius p. 9, 10, 14, 16
Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Bend Radius | 2 inches | Minimum bend radius for stainless steel line sets. | p. 9, 10, 14, 16 |
Where to find it in the PDF
- Parts and Components p. 3, 4, 5, 6
- Layout Drawings p. 8, 9, 10, 11
Table of contents
Manual images
Click an image to enlargeQuick Guide from the Manual
This document provides the necessary parts lists and piping layout diagrams for installing connection fittings for the Viessmann Vitosol 200-FM flat plate collector system. It covers various configurations, including DHW solar packs and systems using Solar-Divicon DN20B/DN25B pumping stations. Always refer to the numbered parts index on page 7 when identifying components for installation.
Parts and Components
The manual details several sets required for system installation:

- General Connection Set (Part No. 7248240): Required for each Vitosol 200-FM collector array (1 to 12 collectors). Includes brass connecting pipes, plugs, stainless steel profile clamps, 90-degree compression elbows, O-ring silicone assembly grease, and copper tube support inserts.
- Installation Fittings Set: Contains metric conversion fittings for connecting to the collector array and expansion tank.
- Interconnection Pipe Set (Part No. 7248239): Used to connect Vitosol 200-FM collectors together using flexible stainless steel pipe and brass fittings with double O-ring seals.
- Sensor Well Set (Part No. 7174993): Required per system, installed in the top collector outlet piping.
Layout Drawings and Piping Connections
The manual provides detailed piping diagrams for different system setups:



- DHW Solar Pack: Diagrams illustrate the connection of collectors to the pumping station and storage tank, including configurations for both copper piping and stainless steel line sets.
- Solar-Divicon DN20B/DN25B: Specific layouts are provided for connecting the 200-FM collectors to these pumping stations.
- Expansion Tank Piping: Diagrams show various options for connecting expansion tanks (wall-hung and floor models) to the Solar-Divicon system.
Important Installation Notes
Stainless Steel Line Set: When using the 1/2" stainless steel line set, you must maintain a minimum bend radius of 2 inches. If possible, a larger bend radius is recommended to ensure proper flow and prevent damage to the piping.
Contacts
For technical support regarding connection fittings or drawings, contact the Viessmann Solar Technical Support Team:
Canada (Waterloo): 1-519-885-6300, [email protected]Canada (Langley): 1-604-533-9445, [email protected]USA (Warwick): 1-401-732-0667, [email protected]
Manufacturer information
Viessmann Climate Solutions
Practical help
Common problems
Ensure a minimum bend radius of 2 inches is maintained at all times.
Refer to the General Connection Set (Part No. 7248240) which contains all essential components for pipe connection to the collector.
Before use
- Verify the collector array size (1 to 12 collectors).
- Ensure the correct connection set is available (General Connection Set for 200-FM).
- Check if the system uses copper piping or a stainless steel line set.
- Confirm the Solar-Divicon model (DN20B or DN25B) to select the correct fittings.
- Lubricate all O-rings with the provided silicone assembly grease before installation.
Specs in practice
- 22 mm compression coupling
- Standard fitting size used for Vitosol collector piping connections.
- Minimum bend radius (2 inches)
- Required for stainless steel line sets to prevent flow restriction or pipe damage.
Images and diagrams
- Layout drawings show the connection sequence from collectors to the storage tank.
- The numbered parts index on page 7 corresponds to the components shown in all piping diagrams.
- DHW Solar Pack diagrams illustrate the connection of collectors to the pumping station and storage tank.
Model compatibility
- General Connection Set (7248240) is required for each Vitosol 200-FM collector array.
- Expansion Tank Flex Pipe (7497468) is only for use with 18L, 25L, and 40L tank models.
- Brass Elbow with Sensor Well (7606041/7606042) compatibility depends on the Vitocell tank model and probe size.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.