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Central heating
Water connection overview, indoor unit
1. Supply flow to central heating, 3/4"
2. Return flow from central heating, 3/4"
3. Supply flow from outdoor unit (hot), 1"
4. Return flow to outdoor unit (cold), 1"
5. Circulation pump between outdoor unit and indoor unit
6. Buffer tank
7. Filling tap and drain valve
8. Shut-off valve with particle filter
9. Safety valve (central heating)
10. Manometer (central heating)
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