Flowserve NRG 16-51 - Manual (Page 19)

9
l Flange PN 40, PN 63, PN 60, DN 50, DIN 50- (for one electrode)
Flange PN 40, PN 63, PN 60, DN 00, DIN 50- (for two electrodes)
m For the approval of the boiler standpipe with connecting flange the relevant
regulations must be considered.
n Vent hole
Provide vent hole as close to the boiler wall as possible!
o High water HW
p Electrode rod d = 8 mm
q Protection tube DN 80 (in France according to AFAQ ≥ DN 00)
r Protection tube DN 00
s Electrode distance
≥
4 mm (air gap and creepage distance)
t Low water LW
u
Reducer DIN 66-, K-88.9 x 3.- 4.4 x .6 W
Examples of Installation
– continued –
Key