3
OVERVIEW AND TECHNICAL FEATURES
Installation, user and maintenance manual – AY Condensing line, AY Series
9
Figure 3�1 – CCI/DDC
AY00-120: description and general characteristics
the appliance (see Figure 3.2
→
11) is a B53P type high efficiency boiler ( star efficiency class as per Directive 92/42/CEE).
The appliance is a Range Rated boiler: the power delivery of the appliance can be adapted to the real system requirements by regu-
lating the nominal gas flow (nominal thermal input).
The appliance, which can produce hot water up to 80°C, is suited to installation in all hot water production systems for heating, sani-
tary use (ACS), process needs, air handlers, etc. Since the appliance is of the 2 pipe variety (water inlet and outlet), it can be adapted
to a variety of purposes (e.g.: both heating and ACS) by bleeding the system.
3�3
TECHNICAL MANUFACTURING CHARACTERISTICS
The appliance is supplied with the following technical manufacturing characteristics, control and safety components:
▶
premixed multigas burner with low NO
X
and CO emissions;
▶
stainless steel plate exchanger, acting as a hydraulic separator;
▶
AY10 microprocessor controller with LCD display and control knob (Figure 4.1
→
14);
▶
S70 controller (Figure 4.1
→
14);
▶
ionisation-based flame controller;
▶
gas solenoid valve with double shutter;
▶
system water antifreeze function;
▶
internal circuit antifreeze function;
▶
automatically resettable water temperature limiting thermostat;
▶
single-use fumes limiting thermostat (thermal cutout);
▶
system circuit water differential pressure switch (PD1);
▶
internal circuit water differential pressure switch (PD2) with anti-sticking function;
▶
overpressure valve on internal circuit, set to trip at 3 bar;
▶
internal circuit expansion tank;
▶
automatic and manual air bleeds on the internal circuit;
▶
fumes pipe with terminal, for type B53P configuration.
▶
condensate discharge siphon (with antifreeze function);
▶
anti-freezing thermostat used for the activation of the heating element on the condensate drain.
3�4
TECHNICAL DATA
Table 3�1 – TECHNICAL CHARACTERISTICS
AY00-120
OPERATION WHEN HEATING
Thermal capacity
Nominal (1013 mbar - 15°C)
kW
34,9
MEAN
kW
21.5
MIN
kW
8.0
OPERATING POINT: Tm80/Tr60 and nominal thermal
capacity
Available power
kW
34.4
Efficiency
%
98.6
OPERATING POINT: Tm80/Tr60 and minimal thermal
capacity
Efficiency
%
97.3
OPERATING POINT: Tm70/Tr50 and nominal thermal
capacity
Efficiency
%
100,6
Efficiency classes
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