Extinguishing device with cold water supply
For part no., see pricelist
A
B
KW
KW
A
B
A
Combustion
B
Dosing container with barrier layer
KW Cold water supply DN 15 ½"
min. 2.0 bar (0.2 MPa), max. 3.0 bar (0.3 MPa)
Note
■ The lines must be secured in metal pipes (½").
■ It must not be possible to shut off the cold water supply without the
aid of tools.
Note
Alternative or additional safety equipment
A shut-off gate valve is standard for an unpressurised material store
or a rotary lock valve for a material store with overpressure (charging
with fan, e.g. wood processing operations).
Preventing overfilling with fuel
To avoid overfilling the combustion chamber, install a fill level moni-
tor in accordance with TRVB H-118. The light barrier installed in the
boiler is used for this purpose.
Burn-back protection device (RHE)
A sensor located directly on the feed pipe detects any sign of burn-
back risk. Briefly increasing the output (increasing the infeed of the
material) counteracts the risk in good time.
By combining with the fuel overfill protection, activation of any speci-
fied protection device is prevented and standard mode is maintained
to ensure extremely reliable heat supply.
Reignition protection (RZS)
In accordance with TRVB H-118 and EN 303-5, automatic wood
combustion systems in which there is a risk of reignition due to a
shower of sparks or the ignition of combustible gases flowing back
into the conveyor pipe must be equipped with reignition protection.
Protection against solid fuel boiler reignition
■ Permanent and monitored barrier layer
■ Permanent monitored negative pressure operation
■ Combination with the RSE (rotary lock valve or shut-off gate valve)
Note
The RSE is not included in the standard delivery and must be
ordered separately.
Temperature and flame monitor (TÜF, FÜF)
In accordance with TRVB H-118, the solid fuel boiler is monitored for
falling below the temperature limit. If the initial burn does not
develop, the system is stopped.
Design information
(cont.)
VITOFLEX 300-UF
Viesmann
93
5682428
9