22
STZSkW ed 12/07
ZEUS Superior kW
Technical Documentation
Technical Documentation
It allows the integrated P.C.B. to feel temperature of flow water in
the primary circuit.
Its breakage
(signalled by relative anomaly)
blocks burner functioning
both in heating and domestic hot water modes.
It is positioned at the exit of the main heat exchanger.
Flow probe
(B1)
NTC probe
10 kΩ 25 °C
It senses outdoor temperature and allows for the P.C.B. to change
CH flow temperature in relation to outdoor temperature.
External probe
(B4)
(optional)
PTC probe
1 kΩ 25 °C
When safety temperature is exceeded (105 °C), the safety thermostat
switches the burner off.
The probe is located on the main exchanger outlet.
Safety thermostat
(E4)
Klixon thermostat
with normally
closed contact
It enables operation of central heating mode when room tempera-
ture is below temperature set value.
When CAR is installed, the room thermostat must be disconnected
without
re-connecting the pre-existing X40 jumper.
Room thermostat (S20)
(optional external)
Disconnecting
contact
It allows the remote control of the generator
(SUM/WIN functioning,
temperature regulation and indication, setting of parameters and
programs, alarms dispaly, reset, information, etc.)
and acts as a weekly
chronothermostat.
If the Super CAR is installed the pre-existing X40 jumper must
be eliminated.
Super CAR
(optional)
See Super CAR
operation
It allows the P.C.B. to feel temperature of the hot water flow from
the storage tank.
Its breakage
(signalled by relative anomaly)
allows the boiler to
operate in domestic hot water mode.
It is introduced into a hole made on the external wall of the boiler
to which it is fixed.
D.H.W. probe
(B2)
NTC probe
10 kΩ 25 °C
Powered by the P.C.B. with variable continuous current.
It varies gas pressure to the burner.
Gas valve modulation coil
(Y2)
Loads.
Using the keys it is possible to RESET, set, modify and memorise operating values of the
boiler.
Using the Display and according to the keys selected the operating values and the error
codes that have intervened on the boiler are shown.
Display board
(A4)
Allows the connection of electronic deviceas e.g. Immergas Virgilio palmtop.
CAIUS BUS output
When the boiler circuit pressure is below 0.3 bar, it switches the
boiler off.
Absolute pressure switch
(S5)
Contact in
interruption
