Immergas Zeus Superior, Руководство пользователя

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13 STZSkW ed 12/07 ZEUS Superior kW
Technical Documentation Technical Documentation
The gas circuit consists in an atmospheric burner and a modu-
lating gas valve, which respectively allow gas combustion and
adjustment of gas flow.
Operation.
When electricity is supplied to the main coils (3) both shutters
inside the valve open, allowing gas to flow toward the burner.
The outlet flow rate/pressure is adjusted by acting on the gas
valve stabilizer through the modulation coil (1).
Fuel is injected through the burner nozzles (7) into the hori-
zontal Venturi pipes (ramps) . A mixture of air and gas forms
inside the pipes and is then ignited by the spark generated by
ignition electrodes (5).
Modulating gas valve.
Gas valve (SIT 845) is equipped with two main coils (3) and a
modulating coil (1) managed by the integrated P.C.B.
It acts on the gas valve stabilizer and proportionally adjusts the
outlet pressure to the continuous current running through it
(see Gas adjustments) .
Main electric coils (3).
There are two ON-OFF type coils powered (230 V AC) by the
integrated P.C.B. when burner ignition is required.
The coils are connected in parallel and supplied by mains power
supply via a connector (2).
Modulation coil (1).
The modulation coil is a low voltage coil managed by the
integrated P.C.B.
Gas circuit.
It acts on the gas valve stabilizer and proportionally adjusts
the outlet pressure to the continuous current running through
it.
Burner.
The burner consists in horizontal Venturi pipes (6) into which
the gas is injected through the same number of nozzles (7)
assembled on the manifold (8).
The diameter of the nozzles varies according to the type of gas
used (see technical data sheet) .
There are 11 nozzles on 24 kW version, 13 nozzles on 28 kW
version and 15 nozzles on 32 kW version.
Ignition takes place thanks to an integrated electronic P.C.B.,
which controls the ignition (5), and detection (4) electrodes.
Ignition electrode (5).
The ignition electrodes are controlled by the integrated P.C.B.,
which triggers an electric spark between the elec trodes, and
the air-gas mixture ignites as soon as it comes into contact
with the spark.
The electrodes are located at the front of the burner.
Detection electrode (4).
The detection electrode is controlled by the integrated P.C.B.
and it detects whether the burner has been ignited.
It is located at the front of the burner near the ignition elec-
trodes.
COIL POWER SUPPLY RESISTANCE
EV1 230 V AC 6.25 kΩ
EV2 230 V AC 860 Ω
Modulation coil 9 V DC 22 Ω
M o d u l a t i o n
coil
Gas valve
connector
EV1
EV2
Common
4
5
6
7 8