| 1 | | Flow from boiler if DHW fitted (note a) | 22mm compression | |
| 2 | | Flow from boiler if no DHW (note b) | 22mm compression | |
| 3 | | Return from DHW kit or cylinder | 22mm compression | |
| 4 | | Flow from Heat pump | 22mm compression | |
| 5 | | Return from CH system | 22mm compression | |
| 6 | | Return from UFH system | 22mm compression | |
| 7 | | Flow to CH - if no DHW (note c) | 22mm compression | |
| 8 | | Flow to CH - if DHW fitted or Return to boiler (note d) | 22mm compression | |
| 9 | | Flow to UFH high capacity (note e) | 22mm compression | |
| 10 | | Return to boiler | 22mm compression | |
| 11 | | Flow to UFH low capacity (note f) | 22mm compression | |
| 12 | | Return to Heat pump | 22mm compression | |
| 13 | | OSV and flow to HW cylinder or DHW kit | 22mm compression | |
| 14 | | Not used - to be blanked off | 1/2" BSPF | |
| 15 | | 1/2" sensor pocket | | |
| 16 | | Solar coil return | 22mm compression | |
| 17 | | Solar coil flow | 22mm compression | |
| 18 | | Feed (from expansion tank) | 22mm compression | |
| 19 | | Flow gravity circuit | 28mm compression | |
| 20 | | 1/2" sensor pocket | Dual Thermostat | |
| 21 | | Return gravity circuit | 28mm compression | |
| 22 | | 1/2" sensor pocket | Solar Sensor | |
| 23 | | Immersion heater (factory fitted) c/w control and limit thermostat note g) | 13/4" BSPF | |
| 24 | | Immersion heater (factory fitted) c/w control and limit thermostat note g) | 13/4" BSPF | |
