Pipework
System Layout
Maintenance
Controls
Boilers
Radiators
Regulations
Heat Emitters
Pipework
Bonding
- 10mm - The minimum size of earthing cable used to bond the main services
- 3A switched fuse spur - correct size for protecting a domestic central heating circuit
Most Common Systems
- Fully pumped system using a 2-position 3-port diverting valve
- One of the first fully pumped systems
- Three port valve and timing device is different from three-port mid-position valve
- Fully pumped system using 3-port mid-position valve
- Y-Plan system
- Time control via programmer and TRVs
- For dwellings up to 150m2
- Fully pumped system using 2x2 port valves
- S-Plan system
- For dwellings greater than 150m2
- Extra 2-port Valve and Room Thermostat required for each extra Heating Zone
