Savio 20/1 MFS User Manual page 56

Electric diagrams
Function switch position
Heat request on d.h.w.
F2 (1,6 A T)
TB1--- L
L
TB1--- P3
TB1--- P2
TB1--- P1
TB1--- PC
LINK OR ROOM THERMOSTAT
IN " HEAT REQUEST"CONDITION
TC TB1--- TC
bk
TR TB1--- TR
b
TT TB1--- TT
br
RESET
PUSH BUTTON
OVERHEAT
THERMOSTAT
DETECTION IGNITION
ELECTRODE ELECTRODE
54
J1--- 4
br
b
J1--- 5
K1 (RELAY)
K2 (RELAY)
J1--- 9 b
TB1--- AC
MAIN CIRCUIT
FLOW SWITCH
TB1--- AP
J2--- 2 2
bk
SHUT DOWN
WARNING LIGHT
3
b
4
br
5
bk
6
w
SEQUENCE
10
br
12
b
18
rev. 17.09.93
F1 (0,08 A T)
PUMP
PRESSURE SWITCH
J1--- 10
br
16
bk
15
br
17
b
13
b
14
br
FULL
CONTROL
P .C.B
11
br
9
b
1 J2--- 1
b
CONNECTOR ON THE H.V. TRANSFORMER
L --- LINE N --- NEUTRAL
ACTIVATED CIRCUIT
NON ACTIVATED CIRCUIT
TRANSFORMER
21V=
12V=
J1--- 6
bk b
3 WAY
VALVE
J1--- 1
br b
PUMP
AIR PRESSURE SWITCH
no
com
nc
FAN
GAS VALVE SOLENOIDS
N
TO THE LOW VOLTAGE
SECTION OF THE
REGULATION P .C.B.
J1--- 3
N
J1--- 2
N
N
N