ASSEMBLY DIAGRAM XILO 20 MC W TOP - card code 4.55972.0
L
J1
N
J14
T A
BM
SR
SS
LEGEND
BM
Modulating coil
CiR
Heating circulator
Ignition electrode
EA
EC
Control electrode
F
Fuse 2(A)
Flue control
FC
FL
Flow meter
JP1
Natural Gas/LPG selector
Hot water temperature selector
JP2
JP3
Post-circulation selector
CiR
J3
F
L1
J8
JP3
JP1
JP4
JP2
RLA
R max.
Lock-out
warning light
JP4
JP5
L
N
PS
RLA
Rmax. Heating max. power adjustment
SR
SS
TA
TST
VG
J12
PS
J9
F C
TL
J6
JUMPER TO BE CUT
IF LIMIT THERMOSTAT
IS REQUIRED
JP5 (LOW. TEMP.)
3
2
1
ON/OFF
Malfunction
warning light
warning light
CONTROL PANEL
Ignition limiting selector
Jumper to be cut for low temperature
Phase 230 V 50 Hz
Neutral
No-water pressure switch
Slow ignition power adjustment
Heating sensor
Hot water sensor
Room thermostat (if any)
EA
J15
FL
-
+
J10
J13
PANEL
CONNECTION
TL
Limit thermostat (if any)
TST
Safety thermostat
Gas valve
VG
Heating potentiometer
1
2
Selector: Off
Hot water potentiometer
3
39
EC
Summer
Winter
Reset
Test