POTTERTON SUPRIMA 30 / 40 / 50 / 60 / 70 / 80 (L) GAS VALVE 402550 was 8402550 BOILER AIR PRESSURE SWITCH Vaillant VU 126 E-C (2000-2001)

Vaillant VU 126 E-C (2000-2001)

There is also a dedicated boost button for temporarily increasing the home's temperature

Turbomax VUW 282E 1995-1999  -  47-044-26

The secondary heat exchanger only appears on combination boilers and allows the heat to be transferred between one closed system and another

““professionally refurbished

POTTERTON SUPRIMA 30 / 40 / 50 / 60 / 70 / 80 (L) GAS VALVE 402550 was 8402550 BOILER AIR PRESSURE SWITCH Vaillant VU 126 E-C (2000-2001)Suprima 100 41 607 82 Suprima 30 41 607 75 Suprima 30L 41 590 42 Suprima 40 41 607 76 Suprima 40L 41 590 43 Suprima 50 41 607 77 Suprima 50L 41 590 44 Suprima 60 41 607 78 Suprima 60L 41 590 45 Suprima 70 41 607 79 Suprima 70L 41 590 46