eta 13180LP-T, Операция

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Safety devices Safety
operating pressure that can arise in the heating system
or parts thereof. The safety valve must be situated in
the boiler room and be easily accessible.
Fig. 3-5: Safety valve
DANGER!
Do not install any shut-off valves, strainers or such like
between the boiler and the safety valve.
The connection size of the safety valve is determined
on the basis of the heating system's maximum heating
capacity, as shown in the table.
Install the safety valve at the highest point of the heat
producer or in the flow pipe close to the heat producer.
Only in this way can it discharge heat by blowing out
hot water and steam.
The safety valve may be installed in any position, but
the upper part of the valve must not face downward.
The flow pipe may be 1 m long maximum and must be
routed in a straight line in the nominal diameter of the
valve inlet.
DANGER!
Safety valve outlet
The safety valve outlet must be directed to the ground
in a pipe so nobody is endangered by hot water or
steam.

The safety valve discharge (vent) pipe must have
at least the same nominal diameter as the valve
outlet, have a consistent downhill gradient and be
routed to a sewer connection. The vent pipe may
contain a maximum of 2 bends and be 2 m long. If
a length of more than 2 m is required, the next size
of pipe must be selected. More than 3 bends and
4 m of length are not permitted. The mouth of the
vent pipe must allow easy inspection and be routed
such as to exclude any danger to persons. If the
vent pipe ends above a funnel, its discharge pipe
must have a diameter at least double that of the
valve inlet.
Valve size
a
Nominal diameter (DN)
a. The valve size is determined by the size of the inlet
connection.
Maximum heating
capacity (kW)
15 (G ½) 50
20 (G ¾) 100
25 (G 1) 200
32 (G 1 ¼) 300
40 (G 1 ½) 600
50 (G 2) 900