Water Unit - Savio 20/1 MFS User Manual

Servicing instructions
Complete substitution of the flow switch
1 Ensure electricity is switched off at main isolator;
2 remove the front panel of the case, the lower protection plate
and lower the control panel (sect. 6.2);
3 drain the d.h.w circuit (sect 6.4);
4 remove the connectors " A" ;
5 completely loosen the inlet connector for the d.h.w. circuit;
6 remove the pipe support spline by loosening the screw " B"
which holds the spline to the bracket;
7 completely loosen the connector which connects the flow
switch to the d.h.w. heat exchanger;
8 remove the screws " C"that hold the flow switch to the bracket;
9 remove the d.h.w. flow switch;
10 reassemble in reverse order.
6.34

Water unit

The water unit is is an assembly of components which can be re-
moved from the appliance as a single unit.
The unit is made up of the pump, volute (scroll), water deviation
body, heating water filter, 3---way valve, by---pass, d.h.w flow switch
and the heating water flow and return pipes.
1 Ensure electricity is switched off at main isolator;
2 remove the front panel and the right panel of the case; open the
sealed chamber; remove the lower protection plate and lower
the control panel (sect. 6.2);
3 remove the d.h.w. heat exchanger as explained in sect. 6.31;
4 remove connection collar " A"on the outlet from the volute
(scroll);
5 loosen the connector on the expansion vessel " B"
6 remove the fork which holds the pipe to the water unit and re-
move the pipe;
38
rev. 17.09.93
A
A
B
C C
A
B