Immergas Zeus Superior - Electric Circuit - Central Heating Phase; Operating with Room Thermostat; Operating with Remote Control

21
STZSkW ed 12/07 ZEUS Superior kW
Technical Documentation
Technical Documentation
Loads.
Powered by the integrated P.C.B. when there is a DHW, central heating or antifreeze
request.
Allows circulation in the primary circuit.
Pump
(M1)
Powered with main power supply voltage by the integrated P.C.B. when the burner needs
to be ignited.
e SIT 845 gas valve is powered at mains voltage.
e VK 4105 gas valve is powered at mains voltage rectied using a diodes jumper (U1)
contained inside the gas valve connector.
Allows passage of gas tothe burner.
Gas valve (Y1)
(main coils)
Ignition electrodes are controlled by the integrated P.C.B., which triggers electric spark
between the ends of the electrodes; the air-gas mixture ignites as soon as it comes into
contact with the spark.
Ignition electrodes
(E1)
Allows ow water within in the primary circuit to be diverted from the central heating
system to the storage tank coil and vice versa.
Powered by the integrated P.C.B.
3-way valve
(M30)
Low voltage circuit.
It allows the boiler to function with 3 zone valves or external pumps
controlled by the relevant room thermostats.
Zone 1 is controlled (timed operation periods and temperatures)
by the CAR (when installed), with the antiblocking and pump
post-circulation, anti-freeze and chimney sweep functions etc
take place.
Zone control unit (CZ)
(optional external)
Allows remote control of boiler operation (SUMMER/WINTER
switch, temperature adjustment and display, alarm display, reset, etc.)
and acts as a weekly timer-thermostat.
When CAR is installed, the pre-existing X40 jumper is to be
eliminated.
Comando Amico Remoto
remote control
(CAR) (optional)
See Comando
Amico Remoto
remote control
operation (CAR)
See zones control
unit operation
Safety devices and controls.
P.C.B. is always powered independently from the position of the button (see integrated
P.C.B. functioning).
Integrated P.C.B.
Guarantees the ow of air to the sealed chamber and the ow of combustion products
to the ue terminal.
It is powered by the integrated P.C.B. with variable voltage in order to allow adaptation
to the boiler fume extraction system.
Fan
(M20)
Act on the integrated P.C.B. and enable functioning of the burner
when ue evacuation takes place correctly.
Flue ow meter (B7)
Voltage from 0.5
to 4.5 volts DC