Hobby 2015 Vantana, Manual

Page: 133 / 175

Built-in devices 10-13
To activate
• Push in the knob at position ( m ) slightly and, at the same
time, move it 90° towards position ( k ).
• If the switch is in position (k), the knob will remain in position ( m ).
To deactivate
• Turn the switch at position ( k) by 90° so that it is parallel to
the frost control.
• At the same time, the knob will jump from position ( m ) to ( n ).
The drain valve can only be closed manually using the
push button (Position m ) and the boiler filled if the valve
temperature is above approx. 7°C.
If the temperature of the safety/drain valve is lower than approx.
3°C, the push button will be ejected (Position n ) and the con-
tents of the boiler will be drained off via the drain outlet ( o ).
k
m
n
o
FrostControl
FrostControl is a non-electric safety or drain valve. If there
is a risk of sub-zero temperatures it automatically drains the
content of the boiler via a drain outlet.
If the system is under excess pressure intermittent pressure
equalisation will automatically take place via the safety valve.
k Rotary switch position “ON”
m Push button position “CLOSED”
n Push button position “DRAIN”
o Drain outlet (to the outside through the vehicle floor)
k