ACO boasts the very latest in technology. A bespoke PCB, designed and produced in-house by Ariston, which allows true flexibility of boiler function. At the heart of the boiler is a new stainless steel primary heat exchanger, produced using the most advanced automotive technology, which has been designed for long life. The ACO has also been designed from the outset to be compatible with Ariston's futuristic remote diagnostics package (currently under development) which will change the way boiler servicing is carried out.

Product Features

Main Technical Information
Heigth	mm	750
Width	mm	450
Depth	mm	280

 

Characteristics

The First UK Boiler with a FREE 5 year guarantee SEDBUK Band A Available in three outputs of 27 and 32kW (with a larger model available in 2005)  Compact dimentions 750x450x280 mm Comfort Switch (Pre-heat function) guaranteeing hot water to the outlet in less than 5 seconds (depending upon installation) Auto-diagnostic system and integrated advanced controls built in to advanced PCB with microprocessor Simple maintenance with easy access all from the front of the appliance Two speed modulating pump: decreases noise and increases efficiency Anti-frost device Anti-scale device Anti seizing device for the pump Built in automatic by-pass built in mechanical time clock Multiple flueing options: up to 4m coaxial and 40m twin pipe Split exhaust and intake pipes for built-in combustion analysis Includes jig-kit and filling loop Optional outdoor sensor: regulated heating temperature automatically increasing efficiency    Internal View       Legend:   Coaxial flue connector Mixer Fan Igniter Burner Ignition and detection electrode Manual air release valve Primary flow NTC probe Main heat exchanger (aluminium) Electrical bow containing PCB By-pass 3 bar saftey valve Control panel Secondary heat exchanger Gas valve Domestic hot water flow switch Pump 3-way motorised valve Condensate trap Condensate trap tube Condensate collector Primary return NTC probe Combustion chamber Integral expansion vessel Rear condensate trap Air pressure switch Flue gas analysis point

 

Technical Data
Power
Heat input min (net)	kW	8,9
Heat input min (net)	Btu/h	30400
Heat input max (net)	kW	25,5
Heat input max (net)	Btu/h	87000
Heat output min	kW	7,7
Heat output min	Btu/h	26300
Heat output max	kW	22,5
Heat output max	Btu/h	76800
Heat output D.H.W max	kW	27
Heat output D.H.W max	Btu/h	92100
Efficiency
SEDBUK Rating		A
Characteristics
Maximum exhaust gas temperature	°C	72
Minimum ambient temperature	°C	5
NOx class		5
O2 content	%	4,3
Gas inlet pressure - Natural Gas (G20)	mbar	20
Pressure loss through boiler (max) (DT=20°C)	mbar	200
Residual head of system	bar	0,2
Maximum heating pressure	bar	3
Maximum water content of system	l	130
Maximum domestic hot water pressure	bar	6
Minimum domestic hot water pressure	bar	0,2
Built-in expansion vessel capacity	l	7
Gas consumption at nominal capacity G20 (15°C; 1013 mbar)	m³/h	2,43
GC number		47-116-34
Heigth	mm	750
Width	mm	450
Depth	mm	280
Weight	kg	40
Performance
Maximum heating temperature	°C	82
Minimum heating temperature	°C	20
Maximum domestic hot water temperature	°C	56
Minimum domestic hot water temperature	°C	36
D.H.W flow rate (DT=35°C)	gal/min	2,4
D.H.W flow rate (DT=35°C)	l/min	10,8
Electrical data
Supply voltage	V	230
Supply frequency	Hz	50
Power consumption	W	118
Protection grade of electrical system	IP	24D
Internal fuse rating		2A Fast Fuse

 

 

Residual Head

Hydraulic Schematic

Legend C Gas inlet 20

 

 

  

 

Sriston Installation and User Manual

 

Brochure	Installation and User Manual