Adjusting The Bypass Valve - Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual

7 Adapting the appliance to the heating system
7.3

Adjusting the bypass valve

The appliances have a bypass valve.
The pressure can be adjusted between 170 and 350 hPa
(mbar). Approx. 250 hPa (mbar) is preset (mid-position).
The pressure changes by approx. 10 hPa (mbar) each
time the adjusting screw is rotated. By turning right, the
pressure increases and turning left decreases it.
Fig. 7.3 Setting the by-pass valve
> Regulate the pressure using the setting screw (1).
Pressure
Position of the setting
hPa
screw
(mbar)
Right-hand stop (turned
350
all the way down)
Mid-position (5 turns
250
to the left)
5 further turns to
the left from the 170
mid-position
Table 7.4 Setting value for the bypass valve
38
1
Notes/application
If the radiators do not get
properly hot in the works set-
ting
Default setting
If noises in the radiators or
radiator valves are produced
Installation and maintenance instructions ecoTEC exclusive 0020017768_07