Cola TERMO-PERLA LUX Manual De Instalación, Uso Y Mantenimiento página 63

6.5 Plumbing components
Key:
1- Membrane expansion tank
2- System drain cock
3- Safety valve
4- System filling connection
5- Heating circulating pump
6- Heating chamber - pump return
7- Pressure transducer
8- Expansion tank connection
9- Air venting valve
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TERMO-PERLA LUX