Unigas HTP512A, Installation, User'S, And Maintenance Manual

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C.I.B. UNIGAS - M039219CA
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Electrical wiring diagram for burners provided with printed circuit (standard configuration).
As far as connections, refer to the terminal block shown on Fig. 18.
1 Connect the signal conductors from the boiler to the burner, as for the next elements (Fig. 19 - Fig. 21):
ST : thermostat/pressure switch series
TAB : High/low flame thermostat
2 Connect the signal conductors from the burner to the boiler, as for the next elements (Fig. 19 - Fig. 21)
LB : Burner’s lockout signalling LED
LSPG : Gas proving system’ lockout signalling LED
3 In case of modulating burners, the 5, 6 and 7 terminals, on the MA teminal block, are already connected to the regulating modula-
tor (mod. RWF40 ). A 4-pole plug coming out from the electrical panel is provided for the temperature and pressure probes connec-
tions (see Fig. 20).
Note: the regulating modulator is provided according to the ordered probe
Fig. 18: Terminal board for connections on printed circuit
Fig. 19: Progressive burners
Fig. 20: Probes connection
Fig. 21: Fully modulating burners
RWF40 >>>