Technical Information - Ariston A/23 MFFI Installation Instructions Manual

7 TECHNICAL INFORMATION

CE Certification
Heat Input
Heat Output
Efficiency of Nominal Heat Input
Efficiency at 30% of Nominal Heat Input
Heat Loss to the Casing (∆T=50°C)
Flue Heat Loss with Burner Operating
Flue Heat Loss with Burner Off
Maximum Discharge of Fumes (G20-G25)
Residual Discharge Head
Consumption at Nominal Capacity (G20-G25)
Gas Consumption after 10 Minutes*
(15°C, 1013 mbar) (G30-G31)
Temp. of exhaust fumes at nominal
capacity (G20-G25)
CO Content
2
O Content
2
CO Content
Minimum Ambient Temperature
Head Loss on Water Side (max) (∆T=20°C)
Residual Head of System
Heating Temperature
Domestic Hot Water Temperature
D.H.W. Flow Rate ∆T=35°C
D.H.W. Flow Rate ∆T=35°C
D.H.W. Minimum Flow Rate
Pressure of Domestic Hot Water
Expansion Vessel Capacity
Expansion Vessel Pre-load Pressure
Maximum Water Content in System
Maximum Heating Pressure
Nominal Pressure Natural Gas (G20-G25)
LPG
Electrical Supply
Power Consumption
Protection Grade of Electrical System
Internal Fuse Rating
Weight
G.C. Number
*Calculated at 70% maximum output
Manufacturer: Merloni TermoSanitari SpA - Italy
Commercial subsidiary: MTS (GB) LIMITED
MTS Building
Hughenden Avenue,
High Wycombe
Bucks HP13 5FT
Telephone: (01494) 755600 -
Fax: (01494) 459775
Technical Service Hotline: (01494) 539579
24
Supplied By www.heating spares.co Tel. 0161 620 6677
max/min kW
max/min kW
%
%
%
%
%
Kg/h
mbar
m 3 /h
m 3
Kg/h
°C
%
%
ppm
°C
mbar
bar
max/min °C
max/min °C
l/min
gal/min
l/min
max/min bar
l
bar
l
bar
mbar
(G30-G31) mbar
V/Hz
W
IP
Kg.
A/23 MFFI A/27 MFFI
25.6/11.0 29.8/12.0
23.1/9.2 27.3/10.1
91.6
90.2
87.8 88.3
1.2 1.3
8.6 7.1
0.4
0.4
59 62
1.15 1.4
2.72/3.32 3.16/3.86
0.37/0.45
0.32/0.39
2.35/2.32
2.02/2.00
137 128
6.6
5.8
8.6
10
32.7 32
+5 +5
200
200
0.25
0.25
82/42 82/42
56/36 56/36
11.2
9.5
2.5
2.1
2.6 2.6
6/0.2 6/0.2
7
7
1
1
145 145
3 3
20-25
20-25
30-37
30-37
230 / 50 230 / 50
150 190
44
44
FAST 2 AT
FAST 2 AT
47 47
47-116-18 47-116-19