BRÖTJE HEP 25-180-10, Assembly Instructions Manual, Page: 31 / 144

5.1.4 Installation of a gravity lock
1 Flow connection WGB 1."
2 Gravity lock 1."
3 Ball valve shut-off set Brötje ADH 1."
For the internal installation of the speed controlled pump HEP, the
installation on-site of a check valve in the heating flow between the flow
connection of the boiler and the shut-off valve is recommended.
5.2 Electrical connections
For more information, see
Connecting diagram, page 25
5.2.1 General electrical connection
Danger of electric shock
Danger to life due to improper work.
All electrical work in connection with the installation may only be
carried out by a trained electrician.
Danger of electric shock
Before any work, switch off the mains supply to the boiler.
Mains voltage: 1/N/PE
AC 230 V +10% - 15%, 50 Hz
In Germany, the VDE and local regulations must be followed during
installation; in all other countries, follow the relevant regulations.
Caution
All cables must be installed in the cable clamps provided in the
boiler casing and secured in the available strain relief fixings in the
control panel. The cables must additionally be secured in the
strain relief fixings on the rear of the boiler for floor-standing
boilers.
For more information, see
Connecting diagram, page 25
Fig.20 Gravity lock (example: WGB)
1
2
3
RA-0001451
5 Installation
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