Wiring Diagram - Riello TAU 55 UNIT Installation And Maintenance Manual

WIRING DIAGRAM

BOILER CONTROL PANEL
M1 M2 M3
Treg
IG
FILTRO
FI
6.3A
FU
M9 M8
PI
L3 N PE L2 L1
L3 N PE L2 L1
TA
L3 N PE
230V~50Hz
Connections to be made
by the installer
10
GENERAL
TF
Fan-PWM
M10
M7 M6 M5 M4
M
DCV
VE1
Fan-PWM
PB
Pboiler
SCH1
OCI420
AGU2.5
AGU2.3
TS
1
2
TR1
H2
VG1
M11
230 Vac
(*)
TA Room thermostat (low voltage, 24V)
FU Fuse 6.3 A-T
IG Main switch
FI Mains filter
Treg Connection for temperature controller (accessory)
TF Flue gas thermostat, 75°C (+0/-10)
Pboiler Pressure switch (combustion chamber)
Pgas Gas pressure switch
SCH1 Main board
SCH2 Display and control card
ER Flame detection electrode
EA Ignition electrode
TS Safety thermostat (100°C +0/-6)
TR1 Ignition transformer
VG1 Gas valve
H2 Burner lockout indicator
VE1 Variable speed fan
PI CH pump (accessory)
PB Storage cylinder pump (accessory)
SE Outdoor temperature sensor (supplied)
Sm CH flow temperature sensor
Sr CH return temperature sensor
Sb Storage cylinder temperature sensor (accessory)
Sf Flue gas temperature sensor
(*) 230Vac output for alarm connection
Pgas
T2
SCH2
T4
X40-5
T5
X50-5
X30-14 X30-1/14 T1 T6 T7 T8
ER
RIV
EA
AT
PE
M20
M21
SE
A
B
C
D
E
F
G
T3
T9 T10
Sm Sr Sf
Sb