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4.2 Boiler accessories for safety equipment
Note
Observe the information in the chapter "Safety equipment to EN
12828". See page 91.
Thermally activated safety valve 100 °C
For part no., see pricelist
Standard version for fixed response temperature approx. 100 °C,
connection G ¾
Water supply requirements:
■ Cold water inlet DN 15 R ½
■ Permanently connected with a metal pipe
■ Min. 2.5 bar, max. 3.5 bar
■ Drain pipe R ¾
Standard delivery:
■ Thermally activated safety valve incl. sensor well
Note
We recommend using the thermally activated safety valve even if it
is not required by local safety regulations.
2 pce required for boilers with output of 720 kW and higher.
Safety valves
For part no., see pricelist
The safety valve is installed at the highest point of the solid fuel
boiler. Alternatively, the safety valve can also be fitted to a line that is
connected to the highest point.
It must not be possible to shut off the line between the boiler and the
safety valve. Pumps, fittings or constrictions must not be present in
the line. The discharge pipe must be designed in such a way that no
pressure increase is possible. Any expelled heating water must be
drained off safely. The outlet point of the discharge pipe must be
arranged in such a way that any water expelled from the safety valve
can be drained off safely and visibly.
Available safety valves:
■ Safety valve 3 bar (0.3 MPa)
■ Safety valve 4 bar (0.4 MPa)
■ Safety valve 6 bar (0.6 MPa)
Water level limiter
For part no., see pricelist
■ For use as a low water indicator
■ With valid component identification
■ Installation in the heating flow outside the boiler
■ Safety equipment to EN 12828
Maximum pressure limiter 0 to 6 bar
For part no., see pricelist
■ With valid component identification
■ Safety equipment to EN 12828
Note
Required for every boiler in multi boiler systems.
Minimum pressure limiter 0 to 6 bar
For part no., see pricelist
■ For use as a replacement low water indicator
■ With valid component identification
■ Safety equipment to EN 12828
Fitting assembly with pressure gauge
For part no., see pricelist
For fitting a maximum pressure limiter and a minimum pressure lim-
iter (2 free connections).
Flash trap replacement set
For part no., see pricelist
Standard delivery:
■ High limit safety cut-out
■ Safety pressure limiter (maximum pressure limiter 0 to 6 bar posi-
tive pressure)
■ With valid component identification
■ Sensor well G 1/2 x 150 mm
Installation accessories
(cont.)
28
Viesmann
VITOFLEX 300-UF
4
5682428