ASSEMBLY DIAGRAM XILO 20 MCS W TOP - card code 4.55972.0
L
J1
F
N
L1
J14
T A
BM
SR
SS
LEGEND
Modulating coil
BM
CiR
Heating circulator
EA
Ignition electrode
Control electrode
EC
F
Fuse 2(A)
JP1
Natural Gas/LPG selector
Hot water temperature selector
JP2
Post-circulation selector
JP3
JP4
Ignition limiting selector
Jumper to be cut for low temperature
JP5
Phase 230 V 50 Hz
L
VN
CiR
J3
J4
J8
JP3
JP1
JP5 (LOW TEMP.)
JP4
JP2
RLA
R max.
Lock-out
warning light
CONTROL PANEL
FL
N
PA
PS
RLA
Rmax. Heating max. power adjustment
SR
SS
TA
TL
TST
TST
VG
J12
PS
PA
J9
TL
J6
JUMPER TO BE CUT
IF LIMIT THERMOSTAT
IS REQUIRED
3
2
1
ON/OFF
Malfunction
warning light
warning light
Flow meter
Neutral
Air pressure switch
No-water pressure switch
Slow ignition power adjustment
Heating sensor
Hot water sensor
Room thermostat (if any)
Limit thermostat (if any)
Safety thermostat
J15
FL
- +
J10
J13
PANEL
CONNECTION
VG
Gas valve
VN
Fan
Heating potentiometer
1
2
Selector: Off
Hot water potentiometer
3
40
EA
EC
Summer
Winter
Reset
Test