Immergas Zeus Superior - Boiler Inputs

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STZSkW ed 12/07 ZEUS Superior kW
Technical Documentation
Technical Documentation
Inputs.
It sends signals from the SUMMER/WINTER selector, DHW and central heating tem-
perature and central heating request signals (time, ambient temperature, error codes, etc).
To the P.C.B.
Comando Amico Remoto
remote control (CAR) (op-
tion) (see CAR function)
It sends signals to the P.C.B. regarding function requests from zone valves or external
pumps (see zones control unit function).
Zone control unit (CZ)
(external optional)
When the pressure in the primary circuit is lower than 0.3 bar,
it removes the voltage from relay K2 preventing the start of the
ignition cycle.
Absolute pressure switch
(S5)
Open =
No pressure
Closed =
Pressure OK
e signal indicates ame has been detected.
It allows P.C.B. to increase current to modulation coil (Y2) after limiting current during
the ignition sequence.
It keeps the gas valve (Y1) open.
Flame detection
(E2)
Allows the connection of electronic devices e.g. Immergas Virgilio palmtop.
BUS input
(external optional)
Acts on the P.C.B. to adjust fan speed and enable burner operation
when ue evacuation takes place correctly.
Flue ow meter (B7)
Voltage from 0.5
to 4.5 volts DC
Sends a signal to the board that allows ignition or stand-by of the boiler.
Button
Sends a signal that allows boiler operation in Summer
( ) or Winter ( ) mode to the board.
Button "A"
Sends a signal to the board that allows to activate or deactivate the previous domestic hot
water function.
Button "B"
Sends a signal to the board that allows to release the P.C.B. after the intervention of an
fault or boiler block indicated with the relative error code "ERR xx" (see errors and ano-
malies list).
In circuit board programming mode, it allows to exit from the conguration menu.
Button "C"
Sends the circuit board a signal that allows to enter the conguration menu and conrm
the adjustments made.
Button "D"