Fire Protection - Viessmann KOB Pyrot KRT Series Technical Data Manual

Pyrot Technical Data
Piping and Installation of Safety Devices
Design recommendation (continued):
Boiler pump
Boiler model KRT-
150
220
300
400
540
Mixing valve
Boiler model KRT- Nominal
pipe size
150
2b in.
220
2b in.
300
400
540
Viessmann ASME recommended tank sizes (U-stamped)
Boiler model KPT-
150
220
300
400
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 run-off safety valve.
Protection against back-burn for the boiler plant
The following safeguards are part of the scope of supply
for the PYROT Rotating Combustion System:
- Preventing overfilling of the firebox
A level monitor must be installed to prevent overfilling
of the firebox. The PYROT 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 fire box
- Back flash safeguard
The PYROT Rotating Combustion System is operated
with continuous negative pressure and is equipped with
a backflash prevention device. This device prevents
backflashes 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 50-80/4 F
UPS 50-80/4 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 USG
1514 400
2006 530
2650 700
3785 1000
5678 1500
(continued)
Freq.
60 Hz
60 Hz
60 Hz
60 Hz
60 Hz
- 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 PYROT 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.
Mechanical
Voltage and phase
3 x 208-230 V
3 x 208-230 V
3 x 208-230 V
3 x 208-230 V
3 x 208-230 V
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