Fire Protection - Viessmann Vitoflex 300-RF Technical Data Manual

Vitoflex 300-RF Technical Data
Piping and Installation of Safety Devices
Design recommendation (continued):
Boiler pump
Boiler model
RF 150
RF 220
RF 300
RF 400
RF 540
3-way mixing valve
Boiler model Nominal
pipe size
RF 150 2b in.
RF 220
2b in.
RF 300
RF 400
RF 540
Viessmann ASME recommended tank sizes (U-stamped)
Boiler model
RF 150
RF 220
RF 300
RF 400
RF 540

Fire Protection

Follow local regulations for wood-fired heating systems.
Power failure provision
The customer must ensure that there is a supply of water
independent of the electrical supply. This design ensures
that in case of a power failure, the boiler will be reliably
cooled by the thermal safety flush valve.
Protection against back-burn for the boiler plant
The following safeguards are part of the scope of supply
for the Vitoflex 300-RF Rotating Combustion System:
- Preventing overfilling of the combustion chamber
A level monitor must be installed to prevent overfilling
of the combustion chamber. The Vitoflex 300-RF
Rotating Combustion System has a light barrier to
monitor the embers.
- Preventing back-burn
With a temperature sensor directly on the in-feed auger,
any danger of back-burn initiation will be detected and
quickly counteracted at an early stage by increasing the
fuel conveyance speed into the combustion chamber.
- Back flash safeguard
The Vitoflex 300-RF Rotating Combustion System is
operated with continuous negative pressure and is
equipped with a back flash prevention device. This
device prevents back flashes caused by flying embers
or combustible gases that may ignite the fuel system.
Pump
UPS 32-80 F
UPS 40-80/4 F
UPS 50-80/4 F
UPS 80-80/4 F
UPS 80-80/4 F
Valve
3-way mixing valve
3-way mixing valve
3 in. 3-way mixing valve
3 in. 3-way mixing valve
4 in. 3-way mixing valve
Tank size
L
1514
2006
2650
3785
5678
(continued)
Freq.
60 Hz
60 Hz
60 Hz
60 Hz
60 Hz
USG
400
530
700
1000
1500
- Automatic In-feed auger extinguishing system
The supplied fire extinguishing system is necessary on
the in-feed auger. This system should reliably prevent
back- burn in case of a malfunction (such as a power
failure). For safety reasons and to prevent damage by
flooding, connecting the extinguishing system directly
to the water network is not advisable.
This extinguishing system must be equipped with a
6.6 USG (25 L) extinguishing water tank with a float-
type switch and an adjustable Danfoss extinguisher valve.
The tank for the extinguishing system must be equipped
with a level monitoring system.
If there is a shortage of water, the Vitoflex 300-RF
Rotating Combustion System will switch off
automatically.
In case of excess temperature, the in-feed auger will
be flooded reliably but in a limited fashion.
IMPORTANT
The heating contractor must perform the installation of the fire
extinguishing system as specified in section fire extinguishing
systems.
Phase and voltage
3 ph 208VAC
3 ph 208VAC
3 ph 208VAC
3 ph 208VAC
3 ph 208VAC
Mechanical
Speed
3
1
2
2
3
27