Immergas Zeus Superior, Руководство пользователя

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25 STZSkW ed 12/07 ZEUS Superior kW
Technical Documentation Technical Documentation
P.C.B..
Inside the boiler control panel an integrated electronic micro-
processor P.C.B. is located which manages electronic de vices
onboard of the appliance electrical devices, which takes care
of the linear modulation of the of burner power.
The display shows the status and functing mode of the
appliance, indicating the eventual intervention of its safety
devices.
The same P.C.B. is assembled on every model whether with
conventional flue or sealed chamber ;
rec ognition of the
various types of boiler function is automatic as it depends on
how the boiler is wired.
Integrated P.C.B. is always powered regardless independen-
tly by the selection made on the main switch ( ).
P.C.B. periodically self-tests in order to verify correct operation.
While operating in central heating mode or while the boiler is
in Stand-by, self-test function is enabled every 18 hours after
last test or last time the boiler was powered. In DHW mode,
self-test starts within 10 minutes after last time water was drawn
from the tap (self-test lasts approximately 10 seconds).
Warning:
during self-test, the boiler and all signals remain
inactive.
Operation.
Central heating request.
Using button(A) to select functioning in (Winter) the
function is enabled in the heating mode.
On closure of the room thermostat contact (S20) and, if the
system pressure switch contact (S5) is closed (pressure detected in
the primary circuit above the minimum value) , the P.C.B. powers
the boiler pump (M1) through relay K3, after which, through
the diversion of the contact of relay K1 powers the motor (M)
of the 3-way valve (M30), which functions until the end run
switch "1" opens on reaching the heating position.
If the flue flow meter (B7) sends a correct signal to the board
(equivalent to fan standstill or flue flow meter connected) the fan
is powered (M20) through relay K4.
If the temperature detected by the NTC flow probe (B1) is
lower than the setting made on the control panel using the
heating temperature selector, with the consent of the safety
thermostat (E4) and the flue flow meter (B7) it sends a correct
signal to the board (equivalent to fan operating) . The integrated
P.C.B. excites the request relay K2, which causes the closure of
the 2 contacts, allowing to start the ignition cycle controlling,
firstly the ignition electrodes (E1) and successively, both gas
valve coils (Y1).
Burner ignition is detected by the P.C.B. by means of the
ionisation electrodes (E2).
In the first few seconds after the gas valve receives the power
supply (Y1), the current to the modulation coil (Y2) is limited
to the pre-defined slow ignition current.
Successively, the burner goes to the minimum value set by the
setting of the"P61*" parameter, to then reach the maximum
value set (if requested) by the setting of the"P59*" parameter,
in a time determined by the setting of the "P70*" parameter.
Successively, the sign is varied in a proportionally direct
way to the difference between the temperature set using the
heating temperature selector and that detected by the flow
probe (B1).
On exceeding (+5°C) the set temperature, the contact of relay
K2 is opened with consequent burner switch-off, whose re-igni-
tion time depends on the setting of the "P69* parameter".
Every time the burner is switched off the fan operates for a
further 30 seconds.
'VTFT
5SBOTGPSNFS
8*/5&3