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Thermometer
Pressure gauge
External pressure monitoring
Please note:
14
Safety equipment
Install a temperature indicator and a facility for checking the flow temperature into the
boiler flow line, so that the actual heating water flow temperature can be recorded. The
permissible flow temperature must be permanently marked on the display scale.
The boiler must be equipped with a pressure gauge with immediate connection to
the water chamber or in immediate proximity of the flow, as well as a suitable
connection for the pressure testing device according to DIN 16263 or DIN 16271. The
response pressure of the boiler safety valve and the minimum system pressure must
be permanently marked on the display scale.
Equip every boiler, which is protected above 3 bar or which has a rated output higher
than 350 kW, with a maximum pressure switch (type-tested according to VdTÜV Code
of Practice Issue 100/l).
Monitor the operating pressure of hot water heat generator systems with a minimum
pressure switch, type-tested in accordance with the VdTÜV Code of Practice Issue
100/I, in order to prevent water evaporating inside the heating system as a result of
insufficient external pressure.
Install a check valve downstream of the boiler circuit pump to prevent incorrect
circulation.
The pipework between the boiler, the safety valve and the low-water indicator must
not be able to be shut off.
The system diagram only indicate the safety requirements, but is not a recommendation
for specific types of heating network control.
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