Ariston 47-116-17 installation instructions Technical Information, Mffi Rffi System

7. TECHNICAL INFORMATION

				24 MFFI		24 RFFI SYSTEM
Certification				63AT4528		63AT4528
Category				II2H3B/P		II2H3B/P
Thermal Capacity min/max			kW	8/24		8/24
Usable Thermal Power min/max (30/40°C)			kW	8.8/26.1		8.8/26.1
Usable Thermal Power min/max (60/80°C)			kW	7.9/23.3		7.9/23.3
Usable Thermal Power min/max (30/50°C)			kW	-/24.5		-/24.5
Power for Hot Water Production min/max			kW	7.9/23.3		7.9/23.3
Efficiency at Nominal Thermal Capacity (30/50°C)			%	102.2		102.2
Efficiency at 30% of Nominal Thermal Capacity (47°C of return)			%	96.4		96.4
Efficiency at 30% of Nominal Thermal Capacity (30°C of return)			%	103.6		103.6
Gas Consumption after 10 Minutes*			m3	0.42		0.42
Maximum Heat Loss to the Casing (∆ T=50°C)			%	0.6		0.6
Flue Heat Loss with Burner Operating			%	2.1		2.1
Flue Heat Loss with Burner Off			%	0.2		0.2
Maximum Discharge of Fumes			Kg/h	35.1		35.1
Maximum Temperature of Discharge Fumes			°C	66.7		66.7
Temperature of Discharge Fumes when Heating 30/40°C (1 m of coax.)			°C	42.9		42.9
Minimum Room Temperature			°C	5		5
Heating Temperature min/max (High Temperature range)			°C	42/82		42/82
Heating Temperature min/max (Low Temperature range)			°C	30/75		30/75
Temperature of Water for Domestic Use min/max			°C	36/56		36/56
Class NOX				5		5
CO2 Content			%	9.3		9.3
O2 Content			%	4		4
CO Content			ppm	53.5		53.5
Inlet Pressure/Methane Gas G20 (boiler at maximum)			mbar	20		20
Inlet Pressure/Liquid Gas G30 - G31 (boiler at maximum)			mbar	30		30
Residual Discharge Head			mbar(Pa)	0.65(64)		0.65(64)
Maximum Head Loss on Water Side (∆ T=20°C)			mbar	200		200
Residual Head of System (60/80°C)			bar	0.2		0.2
Maximum Heating Pressure			bar	3		3
Maximum Water Content in System			l	130		130
Expansion Vessel Capacity			l	7		7
Expansion Vessel Pre-load Pressure			bar	1		1
Pressure of Water for Domestic Use min/max			bar	0.2/8-10		0.2/8-10
Nominal Capacity of Hot Water for Heating (residual head 0.25 bar)			l/h	820		820
D.H.W. Flow Rate:	∆	T=25°C	l/min	13.4		---
	∆	T=30°C	l/min	11.1		---
	∆	T=35°C	l/min	9.6		---
D.H.W. Flow Minimum Rate			l/min	2.5		---
Quantity of Condensed Water with a (30/40°C)			l/h	1.8		1.8
pH Condensation Value				3.5÷4		3.5÷4
Electrical Supply			V/Hz	230/50		230/50
Power Consumption			W	130		130
Protection Grade of Electrical System			IP	4XD		4XD
Internal Fuse Rating			A	3.15 SLOW		3.15 SLOW
Width	mm			465		465
Height	mm			890		890
Depth	mm			385		385
Central Heating Connections			BSP	3/4		3/4
Domestic Hot Water Connections			BSP	1/2		1/2
Gas Connection			BSP	3/4		3/4
Net Weight			Kg	45		44.5
G.C. Number				41-116-17		41-116-03
Manufacturer:	Merloni TermoSanitari SpA - Italy			*Calculated at 70% maximum output
Commercial subsidiary:	MTS (GB) LIMITED
	MTS Building
	Hughenden Avenue
	High Wycombe
	Bucks HP13 5FT
	Telephone: (01494) 755600
	Fax: (01494) 459775
	Internet: http://www.mtsgb.ltd.uk
	E-mail: info@mtsgb.ltd.uk
	Technical Service Hot Line: (01494) 539579				23 99 84 1439 112