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Central heating flow temperature sensing
The primary is present in almost all boilers and it allows the heat to be transferred from the burner to the water within the system
Vaillant 0020231130 Tube
Ecofit Pure 425 VU 256/6-3 Ov (H-GB) - 41-694-11 (0010020403)
VAILLANT ECOTEC PLUS 824 / 831 / 837 & PRO 24 / 28 GAS VALVE 0020110995 DIVERTER VALVE Central heating flow temperature sensingEcomax 618 VU196 E C (Condensing System) 2000 2001 41 044 21 Ecomax 618 2E VU186 2 C 2001 2007 41 044 28 Ecomax 824 2E VUW 246 2 C 2001 2007 47 044 12 Ecomax 824E VUW 246E C 1999 2001 47 044 07 Ecotec Plus 618 VU 186 3 5 2005 2005 41 044 46 Ecotec Plus 618 VU 186 3 5 R1 2005 2012 41 044 46 R1 Ecotec Plus 824 VUW 246 3 5 2005 2012 47 044 31 Ecotec Plus 824 VUW 246 3 5 R1 2005 2011 47 044 31 R1 Ecotec Plus 824 VUW 246 3 5 R3 2011 2012 47 044 31 R2