Discharge Screw Af To Spring Core Discharge; Horizontal Discharge Ah - Viessmann KOB PYROTEC Technical Manual

Design information
(cont.)
Note
1. Installation position, horizontal:
preferably in concrete with recess for screw conveyor and central
gear
2. Installation position, angled:
exclusively with intermediate floor, preferably made from wood
3. Suitable for woodchips up to G30/50; not suitable for wood bri-
quettes and shredded matter from used or waste wood
4. Sloping installation position reduces the discharge output and the
degree of emptying (by approx. 2.3% per 1 degree slope)
5. Speed/output: Project-related and subject to boiler output and fuel,
sizing by KÖB design department

Discharge screw AF to spring core discharge

Part no. 7388 035
The fuel is moved by the spring core discharge arms into the open
conveyor channel in the silo. Outside the bunker, the screw channel is
sealed.
Standard delivery:
■ Conveyor channel with specially matched discharge screw

Horizontal discharge AH

Part no. 7387 979 for horizontal discharge up to D = 5.0 m
Part no. 7387 854 for horizontal discharge up to D = 6.5 m
Horizontal discharge with bottom agitator in heavy version, especially
for larger bunker volumes and/or high boiler outputs. The two agitator
arms each comprise one or two (depending on size) articulated arm(s)
and an externally fitted leaf spring package. The agitator is driven sub-
ject to the fill level of the discharge screw (control via light barrier).
The discharge screw itself is enabled independently of the agitator by
a separate drive unit according to the boiler requirement. The result is
trouble-free operation and a long service life. When using pellets, a
cover panel is required over the screw channel. Maximum fill level and
maximum slope must be observed.
Standard delivery:
Horizontal discharge according to the project drawing
■ Bottom agitator with two arms and external drive with shaft routed to
inside
■ Drive for bottom agitator 3 x 400 V, with geared conveyor motor and
torque support; control according to boiler control unit with enabling
of discharge screw
Specification
Horizontal discharge AH
Part no.
Discharge circuit f
Weight excluding conveyor channel
Torque of the drives
A
B
PYROTEC
Note
Article price per m, always round up to whole numbers!
The max. length of the discharge screw AF is 6 m.
Total price = total length a in metres (max. 6 m) x individual price
■ Drive unit for discharge screw with spur geared motor 3 x 400 V and
chain drive; control according to boiler control unit with enabling of
the following conveyor device; speed/output: project-related and
subject to boiler output and fuel
■ Light barrier for monitoring the fill level at the end of the sealed screw
channel
■ Outlet with inspection cover and safety limit switch
To be carried out on the customer side:
■ Installation of an intermediate floor required (preferably made from
wooden boards)
Note
1. Discharge screw (part no.: 7387 603) must also be ordered!
2. Speed/output of the drives: Sizing by KÖB design department.
AH up to 5 m
7837 979
m 3.8 4.5
kg 480 480
Nm ~2900 ~2900
Nm ~800 ~800
AH up to 6 m
7837 854
5.0 5.0 5.5
480 500 500
~2900 ~2900 ~2900
~800 ~800 ~800
6
6.0
500
~2900
~800
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