5.3 Fuel discharge with agitators
Horizontal discharge AH
For part no., see pricelist
■ Horizontal discharge up to 5.0 m diameter
■ Horizontal discharge up to 6.0 m diameter
Horizontal discharge with bottom agitator as a heavy-duty version,
especially for larger volumes and/or high boiler outputs. The two agi-
tator arms each comprise one or two (depending on size) articulated
arms and an externally fitted leaf spring package. The agitator is
driven subject to the fill level of the discharge screw conveyor (con-
trol via light barrier).
The discharge screw conveyor itself functions independently of the
agitator by a separate drive unit in accordance with boiler demand.
The result is trouble-free operation and a long service life. In wood
pellet applications, a cover panel is required over the screw con-
veyor channel. Maximum fill level and maximum slope must be
observed.
Standard delivery:
■ Horizontal discharge as per project drawing
– Bottom agitator with two arms and external drive with shaft routed
to inside
– Bottom agitator drive 3 x 400 V, with geared screw conveyor
motor and torque support
– Switching by the boiler control unit with enabling of the dis-
charge screw conveyor
– Drive unit for discharge screw conveyor with spur geared motor
3 x 400 V and chain drive
– Switching by the boiler control unit with enabling of the follow-
ing conveyor device
– Speed/output: project-related and subject to boiler output and
fuel
– Light barrier for monitoring the fill level in the sealed screw con-
veyor channel
– Outlet with inspection cover and safety limit switch
To be carried out by the customer:
■ Installation of an intermediate floor required (preferably made from
wooden boards)
Note
The discharge screw conveyor must be ordered separately.
Speed/output of the drives: sizing by Viessmann
Specification
Max. fill level
BD650 wood pellets
m
4.5
BD350 briquettes
m
6.0
BD350 woodchips
m
8.0
Max boiler output
BD650 wood pellets
kW
2000
BD350 briquettes
kW
1250
BD250 woodchips
kW
1250
BD350 woodchips
*12
kW
1250
BD450 woodchips
*12
kW
1250
Horizontal discharge AH
AH up to 5 m
AH up to 6 m
Discharge circle f
m
3.8
4.5
5.0
5.5
6.0
Weight excluding conveyor channel
kg
480
480
480
500
500
Torque of the drives
At agitator centre
D
Nm
approx. 2900
approx.
2900
approx.
2900
approx. 2900
approx. 2900
At discharge centre
B
Nm
approx. 800
approx. 800
approx. 800
approx. 800
approx. 800
*12
If the fuel is approved for the boiler
Fuel discharge
(cont.)
VITOFLEX 300-UF
Viesmann
45
5682428
5