14
Circulation pump (optional)
If an external circulation pump is connected then it will work in pulse mode. If water is drawn,
the circulation pump runs with the run time (20 or 40 seconds) set with the selector switch.
After the end of the run time, pump start-up is permitted only after a 10 minutes break.
Electrical circuit diagram
Plug for volume flow sensor VFS
Fuse 3.15A
quick-acting
Note the plug layout:
brown
green
white
yellow
Optional:
Circulation pump
Primary
pump
S
e
le
c
tion s
w
itch
Run
time
c
irc
ul
a
tion pump