Vaillant TURBOmax VUW 242/1E Instructions For Use Manual page 7

Check water contents
Open the lower door by pulling outwards. Check the water contents of the system. The
white hand on the lower scale of the pressure and temperature gauge
between 1 and 1.5 bar. j(the hand is below O.B·bar when the system is cold, your
installer should be called to refill the system.
The top scale of the pressure and temperature gauge shows the temperature of water in
the central heating cifCl1it.
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should be
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