9
Installation
Note
The level electrode NRG 26-40 can be installed together with one GESTRA level elec-
trode for water level limiting or for high-level alarm in a single protection tube or exter-
nal level pot (inside diameter 100 m).
Fig. 5 - 8.
If the level limiting electrode is installed
inside the vessel, it must be at least 40 mm away from the upper vent hole.
For the approval of the boiler standpipe the relevant regulations must be considered.
Refer to pages 12 – 13 for typical installation examples.
The angle of inclination of the electrode must not exceed 45°, with the length of the
electrode rod being limited to 688 mm.
Fig. 8
The seating surfaces of the standpipe or the flange provided on the vessel must be
accurately machined,
Fig. 3
!
Do not bend electrode rod when mounting.!
Do not subject electrode rod to physical shocks.
Use only the supplied joint ring!
27 x 32, form D, DIN 7603, 1.4301, bright annealed
Do not lag electrode body above the hexagonal section!
Do not insulate electrode thread with hemp or PTFE tape!
Do not apply conductive paste or grease to the electrode thread!
Observe the minimum distances for the installation of the electrode!
Observe the specified tightening torque.
Do not cut the electrode rod.
Attention
