Technical data

43
e
FUNCTIONAL DIAGRAM
NOTE: L-N-E CONNECTION IS ADVISABLE
CONTROL SWITCHING OF TIME CLOCK AND ROOM THERMOSTAT IS 230 V.a.c.
R.T. Room thermostat
TS H Heat time switch
G.V. Gas valve
C.S. Condensate sensor
D.H.W.F.S. Domestic hot water flow switch
P.S. Water pressure switch
H.L.T. Hight limit thermostat
H.T. Heat thermistor
D.H.W.T. Domestic hot water thermistor
MOD Modulator
F Fan
P Pump
3W 3 way motor
S.S.E. Spark\Sense electrode
OPE Gas valve solenoids
B.C.B.
(ACF02X) Burner control board
B.E.B. Boiler control board
S.B. Secondary board
JP6 Pre-heating jumper
JP7 Room thermostat or remote control jumper
JP8 Natural gas selector
JP9 Timer on- off selector
PT1 (S.B.) Selection of 0-reset / winter - summer
PT2 Central heating temperature control
PT3 DHW temperature control
DS1
÷DS2 Temperature / alarm display
TA1 Combustion test
F1 Fuse 100 mA F (on 24V circuit)
F2 Fuse 2 A F (on 230 V circuit)
RL1 Ignition relay
RL2 Pump relay
RL3 3 way relay
IS01 Fan triac
L1 Led OK (green)
L2 Led alarm (blink red)
TRF1 Transformer
D.A.P.S. Differential analogue pressure switch
B.T. Burner thermostat