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5797 340 - 01
Vitoflex 300-RF Installation & Operating
Appliance Description
(continued)
Operation
Legend
A
Safety heat exchanger
B
Combustion chamber
C
Heat exchanger
D
Guide pipe
E
Inspection port
F
Infeed grate
G
Primary air damper
H
Cleaning cover, flue gas collector
K
Sight glass and connection for oil or gas burner
L
Flue gas collector
Controller
The system controller regulates and controls the
combustion system and all associated components.
Fuel supply
The fuel is transported via the feed on to the infeed grate.
A feed screw conveyor is installed at the side for this
purpose.
Infeed grate
On the infeed grate, the fuel is gasified under lack of
oxygen. The movement of the infeed grate causes the ash
to fall into the ash removal compartment.
Combustion chamber
Secondary air is supplied in rotation to the combustion
chamber. Here, the combustion of the combustion gases
takes place under rotary movement.
Flue gas recirculation
Part of the flue gas is re-supplied to the combustion on
the infeed grate.
Ash removal
An optional ash removal screw automatically transports
the ash out of the boiler. Without automatic ash removal
the ash is collected in ash pans.
Boiler safety equipment
The heat exchanger contains a high limit safety cut-out
and water pressure switches (positive and/or vacuum
pressure).
The safety heat exchanger must be connected via a
thermally activated safety valve. In the fuel supply area,
safety limit switches are installed on the inspection covers.
Burn-back protection
Burn-back protection on the feed screw conveyor is
provided either by a shut-off gate valve or a rotary lock
valve. The type of locking device used depends on the
position and size of the fuel store and the pressure
conditions in the fuel transport system. An extinguishing
device is also installed which floods the feed screw
conveyor with water when a selectable response
temperature is reached.
Operating instructions
The operating instructions form part of this product.
All persons working with the product must have read
and understood the contents of these operating instructions.
Pass on the operating instructions to every user.
Integration into an overall system
The Vitoflex 300-RF is part of an overall system.
The boiler’s sensors and drive units are connected with
the control panel via the electrical installation. The heating
system installation links the boiler to the heating system
circuit. The energy generated is supplied to the consumers.