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Ariston Aco System 27 RFFI Boiler
Wall-hung High Efficiency gas combination boiler
Natural Gas
ACO is compact and easy to install with pleanty of hand and tool room and easy access to all connections from the front. This all-new high efficiency boiler has a comprehensive specification including electronic ignition, automatic by-pass, anti-scale, anti-frost device and self-diagnostics sequence.
ACO boasts the very latest in technology. A bespoke PCB, designed and produed in-house by Ariston, allows true flexibility of boiler function. At the heart of the boiler is a new aluminium-silicon primary heat exchanger
Main Characteristics
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Electronic ignition
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Anti-scale device
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Anti-frost device
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Low Nox
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Insufficient system pressure shutdown
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Automatic bypass
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Fully modulating
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C.H. Temperature adjustment
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P.C.B with Microprocessor
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Combustion analysis device
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High efficiency
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Outdoor sensor
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Integral auto-diagnostics
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Main Technical Information |
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Heigth |
mm |
750 |
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Width |
mm |
450 |
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Depth |
mm |
310 |
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Characteristics |
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The first UK boiler with a FREE 5 Year guarantee
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SEDBUK Band A
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Available in two outputs of 27 and 32kW
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Compact dimentions 750x450x280mm
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Auto-diagnostic system and integrated advanced controls built in to advanced PCB with microprocessor
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Simple maintenance with easy access all from front of appliance
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Two speend modulating pump: decreases noise and increases efficiency
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Built in system components: pump and expansion vessel
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Anti-frost device
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Anti-scale device
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Anti seizing device for the pump
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Built in automatic by-pass
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Multiple flueing options: up to 4m coaxial and 40m twin pipe
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Split exhaust and intake pipes for built-in combustion analysis
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Optional outdoor sensor: regulated heating temperature automatically increasing efficiency
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Guarantee extendable year on year for life of boiler after first free 5 years
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Designed for connection to any indirect hot water cylinder (preferably Ariston unvented cylinder) |
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Internal View |
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Legend:
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Coaxial flue connector
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Mixer
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Fan
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Igniter
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Burner
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Ignition and detection electrode
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Manual air release valve
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Primary flow NTC probe
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Main heat exchanger (aluminium)
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Electrical box containing PCB
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By-pass
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3 bar saftey valve
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Control panel
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Gas valve
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Pump
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Condensate trap
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Condensate trap tube
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Condensate collector
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Primary reurn NTC Probe
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Combustion chamber
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Integral expansion vessel
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Rear condensate collector
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Air pressure switch
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Flue gas analysis ports |
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Technical Data |
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Power |
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Heat input min (net) |
kW |
8,9 |
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Heat input min (net) |
Btu/h |
30400 |
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Heat input max (net) |
kW |
31,6 |
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Heat input max (net) |
Btu/h |
107800 |
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Heat output min |
kW |
7,7 |
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Heat output min |
Btu/h |
26300 |
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Heat output max |
kW |
22,5 |
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Heat output max |
Btu/h |
76800 |
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Efficiency |
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SEDBUK Rating |
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A |
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Characteristics |
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Exhaust gas temperature at nominal capacity |
°C |
67,1 |
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Minimum ambient temperature |
°C |
5 |
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NOx class |
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5 |
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CO2 content |
% |
9.8 |
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Gas inlet pressure - Natural Gas (G20) |
mbar |
20 |
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Pressure loss through boiler (max) (DT=20°C) |
mbar |
200 |
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Residual head of system |
bar |
0,2 |
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Maximum heating pressure |
bar |
3 |
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Maximum water content of system |
l |
130 |
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Built-in expansion vessel pre-charge pressure |
bar |
1 |
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Built-in expansion vessel capacity |
l |
7 |
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Gas consumption at nominal capacity G20 (15°C; 1013 mbar) |
m³/h |
2,85 |
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GC number |
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47-116-34 |
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Heigth |
mm |
750 |
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Width |
mm |
450 |
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Depth |
mm |
280 |
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Weight |
kg |
40 |
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Electrical data |
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Supply voltage |
V |
230 |
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Supply frequency |
Hz |
50 |
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Power consumption |
W |
118 |
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Protection grade of electrical system |
IP |
24D |
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Internal fuse rating |
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2A Fast Fuse |
 
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Residual Head |
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Hydraulic Schematic |
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Sriston Installation and User Manual
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