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2.
For the Installer
2.4.27 Installing the thermal process safeguard
Connecting thermal process safeguard to thermal safety device
a) The thermal process safeguard and cleaning T-piece must still be accessible after installation.
b) The drain must be visible in order to check the function, therefore use a discharge funnel.
c) It must not be possible to block the connection manually.
Connection according to EN 303-5:
6
7
8
1
2
3
4
5
Fig. 57 Thermal safety device connection
Minimum connection pressure of the thermal safety device: 2 bar.
It must not be possible to block the connection manually.
1 ........... Pressure reducing valve (only with CW connection of more than 6 bar)
2 ........... Dirt trap
3 ........... Thermal process safeguard (opens at approx. 95 °C)
4 ........... Cleaning T-piece
5 ........... Discharge funnel
6 ........... Immersion sleeve for the sensor of the thermal process safeguard
7 ........... Boiler return
8 ........... Boiler feed
