Forces on the building
If the pushrod discharge comprises multiple pushrods, they move in
opposite directions. This means: cylinder 1 pulls, cylinder 2 pushes,
cylinder 3 pulls, etc. The pushrod with the least resistance moves to
its end position first, then the next one.
When all pushrods are in the end position, the pressure diverter
valve switches to the opposite direction. The pressure diverter valve
is factory set to 190 bar (19 MPa).
Note
The forces to be taken into consideration vary from project to project.
Consequently, Viessmann should be consulted on this matter.
FG1 Maximum tensile force on the weld base of the fuel store
upwards per metre length
FS
Total normal forces on the front panel (slot discharge)
FR
Total normal forces on the back panel
FR1 Normal force of a pushrod on the back panel
FS1 Normal force of a pushrod on the front panel
FZD Maximum pressure force on the weld base for the pushrod
drive
FZZ Maximum tensile force on the weld base for the pushrod drive
FM1 Normal force of a pushrod on the centre discharge cover
Number of pushrods
1
2
3
FS
mm
1 x FS1
1 x FS1
2 x FS1
FR
mm
1 x FR1
1 x FR1
2 x FR1
FS1
FR1
FZZ
FZD
FG1
FM1
Standard version
160 kN
130 kN
362 kN
484 kN
12 kN
100 kN
Applications of push floor discharge
Slot discharge for pulling
The drawing below is a schematic diagram. A project-specific draw-
ing must be produced for construction design.
Note
Only original Viessmann weld bases are permitted for the pushrod
drive.
Fuel discharge
(cont.)
VITOFLEX 300-UF
Viesmann
55
5682428
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