2.11 Expansion vessel
Knight I
Speed II
Speed III
6 720 608 487
Power plant information
FIG. 6 Pump characteristic
Tab. 4
150 143 135 127 119 111
1,0
0,5 0,6 0,7 0,8 0,9
Maximum
pressure
(bar)
Water
capacity (I)
RF)
9
ambient (TRZ12-2 / TR15RF).
• It is in the programming range (TRZ12-2 / TR15
At a flow temperature of 88 ÿC, the maximum water volume of
the system can be determined according to the preload
pressure in the expansion vessel.
B Open the nitrogen filling valve (70) and lower the preload
pressure to 0.5 bar.
• The boiler is in operation and the room temperature is lower
than that set in the thermostat
The boiler has an expansion vessel with a capacity
of 6 l and a preload pressure of 0.75 bar to compensate for
pressure rises due to the temperature rise of the heating
medium during operation.
To increase capacity:
• The room temperature is lower than that set in the room
thermostat (TR12).
Machine Translated by Google
