Ferroli optima 2001 VMF7 Installation Instructions Manual page 36

13.0 REMOVAL OF FAULT DIAGNOSTIC/TEMPERATURE CONTROL
a) Refer to Section 1, items a, c, d, f, and j.
b) Remove P.C.B. top cover by unscrewing the two fixing screws.
c) Pull control box front cover forward
d) Disconnect electrical connections from fault diagnostic control panel
e) Remove rataining nuts from the C.H. and D.H.W.thermostat spindles, remove fault diagnostic/temperature control panel.
f) Re-assemble in reverse order.
14.0 AIR PRESSURE SWITCH
a) Refer to Section 1, items a, c, d, f, and i.
b) Remove the two screws securing the air collection plate (fig. 45), and withdraw the plate complete with the air pressure
switch (Take care not to lose «P» clip).
c) Disconnect electrical leads to air pressure switch.
d) Remove pressure sensing tubes.
e) Remove the pressure switch, 2 screws.
f) Re-assemble in reverse order (refer to fig. 46 for wiring).
White silicone tube
Red silicone tube
BROWN
BLACK
BLUE
BROWN
BLUE
36
KROMSCHRODER
DL 1E
2
3 1
BLUE
HUBA 605
3 2
1
BLACK
HUBA 602
3
2
1
BLACK
2001
P1
P2
Fig. 45
3
1
3
2
3
BROWN
KROMSCHRODER
2
1
HUBA 605
HUBA 602
2
Fig. 46
1