Immergas Zeus Superior, Руководство пользователя

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STZSkW ed 12/07 ZEUS Superior kW
Technical Documentation Technical Documentation
D.H.W request.
If the temperature detected by the domestic hot water NTC
probe (B2) positioned on the storage tank is lower than that set
using the domestic hot water temperature selector * and if the
system pressure switch contact (S5) is closed, the low voltage
circuit exites relay K3. The closure of this contact causes the
boiler pump to be powered (M1).
In the meantime, through the contact of relay K1, the motor
(M) of the 3-way valve (M30) is powered, which goes to the
domestic hot water position. The boiler ignites in the same
way in the heating phase.
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.
When the flame has been detected, the signal to the modulation
coil is increased in a way to immedialtely reach (if requested)
the maximum power regulated on the gas valve or however
necessary to reach the set temperature.
Successively, flame modulation takes place with reference to the
difference between the temperature set using the domestic hot
water temperature selector and that deteted by the domestic
hot water probe (B2).
When the temperature measured by the domestic hot water
probe (B2) exceeds the requested value, the K2 relay contact is
opened (burner switch-off) and after the post-operating times
also the contacts of relay K4 (fan) and K3 (pump) .
When the temperature of the domestic hot water contained in
the storage tank falls below the defined value, which can be set
using the "P71* parameter" with respect to the temperature set
by the domestic hot water temperature selector, the relays are
powered again in order to start a new ignition cycle.
If during functioning the heating flow probe (B1) measures
a temperature exceeding 90 °C, the contact of relay K2 is
opened, which is then re-closed as soon as the temperaure
falls back below 75 °C.
* The domestic hot water request can take place when restoring
the temperature of the water inside the boiler due to a
withdrawal of domestic hot water, or to restore the temperature
of the water inside the boiler if the latter falls unexpectedly
(0.5 °C per minute).
Heating anti-freeze request.
When the temperature detected by the heating flow probe
(B1) falls below 4 °C, the board gives consent for ignition and
keeps the generator operating with the burner at minimum
until a boiler temperature equal to 42 °C is reached (radiator
anti-freeze).
The anti-freeze function is not activated if the boiler main
switch is in selection (Stand-by).
“Chimney sweep” request.
By pressing button "C" Reset for a period of time between 8
and 15 seconds, on its release the board gives consent for igni-
tion of the generator and keeps it operating at the maximum
heating power set for 15 minutes.
During this period of time only limit thermostat functioning
is respected (90 °C), which is carried out using the heating
flow probe (B1).
The function is indicated by the relative symbol and the
code"07" on the Remote Control display (if mounted) .
It can be interrupted by pressing the main switch ( ) in the
off position or after the 15 minutes have passed.
* see integrated P.C.B. programming.