Forces On The Building; Applications Of Push Floor Discharge; Slot Discharge For Pulling - Viessmann VITOFLEX 300-UF Technical Manual

Fuel discharge
(cont.)

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).
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
Number of pushrods
FS
FR
Standard version

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.
VITOFLEX 300-UF
Note
The forces to be taken into consideration vary from project to project.
Consequently, Viessmann should be consulted on this matter.
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
mm
mm
FS1 FR1
160 kN 130 kN
Note
Only original Viessmann weld bases are permitted for the pushrod
drive.
1
1 x FS1 1 x FS1
1 x FR1 1 x FR1
FZZ FZD
362 kN 484 kN
5
2 3
2 x FS1
2 x FR1
FG1 FM1
12 kN 100 kN
Viesmann
55