Flowserve NRG16-12 - Manual (Page 15)

5
1
Flange PN 40, PN 63, PN 60, DN 50, DIN 250-
Flange PN 40, PN 63, PN 60, DN 00, DIN 250-
2
For the approval of the boiler standpipe the relevant regulations must be considered.
3
Vent hole
Provide bore as close as possible to the boiler wall!
4
High water HW
5
Electrode rod d = 8 mm
6
Protection tube DN 80
7
Protection tube DN 00
8
Electrode distance
≥
4 mm
9
Low water LW
0
Reducer DIN 266-2, K-88.9 x 3.2 – 42.4 x 2.6 W
Key
Wiring
NRG 1...-12
Note that screened four-core cable, e. g. I-Y(St)Y 2 x 2 x 0.8 or LIYCY 4 x 0.5 mm² is required for wiring
the electrode.
Max. length 00 m with conductivites from 0 µS/cm.
Max. length 30 m with conductivites from 0.5 µS/cm.
Max. length 5 m with conductivites from 0.5 µS/cm and application of the ancillary unit URN
(24 V DC).
. Unscrew screw K , Fig. 10
2. Take the terminal box off the level electrode, leaving the sealing element O on the contact
plate P .
3. Remove lid L .
4. Press connecting plate N out of the upper part of the terminal box M .
The upper part of the terminal box can be turned in steps of 90°.
5. Detach cable gland
Q and cable clamp R from the upper part of the terminal box M .
6. Run cable through cable gland Q and upper terminal box M and connect the terminals of the
connecting plate N according to the wiring diagram.
7. Press connecting plate N into the upper part of the terminal box and align the cable.
8. Hold cable with cable clamp R and cable gland Q in position.
9. Mount lid L and insert screw K .
0. Put upper part of the terminal box onto the level electrode and fix it firmly with screw K .