4 Description of the product
The Gas 220 Ace boiler is delivered with a combination of the control
panel, control unit and extension PCB. The contents of this manual are
based on the following software and navigation information:
Tab.9
Software and navigation information
Name visible in display
Software version
Boiler Gas 220 Ace
FSB-WHB-HE-150-300
01.07
Control panel HMI S-control
HMI
02.01
PCB SCB-01
SCB-01
00.02
4.1
Operating principle
4.1.1
Gas/air regulation
The boiler is equipped with a casing that also serves as an air box. The
fan draws in the combustion air. The gas is injected into the venturi and
mixed with the combustion air. The fan speed is controlled on the basis of
the settings, the heat demand and the prevailing temperatures measured
by the temperature sensors. The gas/air ratio control ensures an accurate
mixture of the required amounts of gas and air. This provides optimum
combustion over the entire heat input range. The gas/air mixture goes to
the burner, where it is ignited by the ignition electrode.
Important
The combustion air supply is checked before each burner start,
and at least once every 24 hours. During continuous operation
(e.g. supplying process water), please note that the boiler control
will reset every 24 hours.
4.1.2
Combustion
The burner heats the central heating water flowing through the heat
exchanger. If the temperature of the flue gases is lower than the dew point
(approx. 55°C), the water vapour condenses in the heat exchanger. The
heat released during this condensation process (referred to as the latent
or condensation heat) is also transferred to the central heating water. The
cooled flue gases are discharged through the flue gas discharge pipe. The
condensed water is discharged through a siphon.
4.1.3
Control system
The e-Smart electronic control system ensures that your heating system is
smart and reliable. This means that the boiler responds practically to
negative environmental influences (such as limited water flow and air flow
problems). In the event of such influences, the boiler will not go into
lockout mode, but in the first instance will modulate back. Depending on
the nature of the circumstances, a warning, blocking or lock-out may
occur. The boiler continues to supply heat provided the situation is not
dangerous. With this control system, your boiler is also equipped for
remote control and monitoring.
4.1.4
Control
On/off control
The heat input varies between the minimum and the maximum values
on the basis of the flow temperature set on the boiler. It is possible to
connect a 2-wire on/off thermostat or a power stealing thermostat to the
boiler.
Modulating control
The heat input varies between the minimum and the maximum values
on the basis of the flow temperature determined by the modulating
4 Description of the product
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7665063 - v.05 - 18102018
