Ariston MICROCOMBI 27 MFFI Manuale - Pagina 3

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Ariston MICROCOMBI 27 MFFI Manuale

TECHNICAL DATA

Category
Type
POWER
Heat input max.
Heat input min.
Heat output max.
Heat output min.
EFFICIENCY
SEDBUK Rating
CHARACTERISTICS
Heat loss to the casing (∆T= 50°C)
Heat loss through the flue when burner on
Heat loss through the flue when burner off
Exhaust discharge maximum (natural gas)
Residual discharge head
Consumption at nominal capacity G20
Gas consumption after 10 minutes*
(15°C, 1013 mbar) G30-G31
(1)
Exhaust gas temperature at nominal capacity
CO 2 content
O 2 content
CO content
Minimum ambient temperature
Pressure loss through boiler (max) (∆T=20°C) mbar
Residual head of system
D.H.W. minimum flow rate
Domestic hot water pressure maximum
Domestic hot water pressure minimum
Built-in expansion vessel capacity
Built-in expansion vessel pre-charged pressure
Maximum water content of system
Maximum heating pressure
Gas inlet pressure - Natural Gas (G20)
Gas inlet pressure - LPG (G30-G31)
Weight
G.C. number
PERFORMANCES
Central heating temperature maximum
Central heating temperature minimum
Domestic hot water temperature maximum
Domestic hot water temperature minimum
D.H.W. flow rate ∆T= 35°C
D.H.W. flow rate ∆T =35°C
ELECTRICAL DATA
Electrical supply
Power consumption
Protection grade of electrical system
Internal fuse rating
C*: C12, C32, C42, C52, C82;
(1)
:15°C, 1013 mbar
*Calculated at 70% maximum output
Graph of boiler residual head
500
400
300
200
100
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300
simplified coaxial
system coupling
separation of the intake
MICROCOMBI
23 MFFI
II 2H 3+
C12, C32, C42, C52 C12, C32, C42, C52
kW - Btu/h 25.6 - 87,300
kW - Btu/h 11.0 - 37,500
kW - Btu/h 23.7 - 80,900
kW - Btu/h 9.6 - 32,800
Band
D
%
1
%
6.5
%
0.4
kg/h
51
mbar
0.96
(1)
m
3
/h
2.72
m
3
0.32
kg/h
2.02-2.00
°C
126
%
7.0
%
8.0
ppm
38
°C
+5
200
bar
0.25
l/min
2.5
bar
6
bar
0.2
l
6
bar
1
l
130
bar
3
mbar
20
mbar
30-37
kg
39
47-116-16
°C
82
°C
42
°C
54
°C
36
l/min
9.7
gal/min
2.1
V/Hz
230/50
W
135
IP
X4D
FAST 2 AT
flow rate l/h
air pressure switch
can be accessed
directly from the
exterior
Supplied By www.heating spares.co Tel. 0161 620 6677
MICROCOMBI
27 MFFI
Flue
connector
II 2H 3+
Air
intake
27.3 - 93,100
11.0 - 37,500
Fan
27.0 - 92,100
Combustion
9.3 - 31,700
chamber
hood
D
"Twin-pass"
heat exchanger
1.3
Domestic hot water
6.7
temperature
0.4
probe
58
1.41
3.10
Combustion
chamber
0.36
2.31-2.27
149
7.0
Burner
8.0
53
Detection
+5
electrode
200
0.25
Ignition
2.5
electrodes
6
0.2
6
1
130
3
20
28-37
41
47-116-24
82
42
56
Control
panel
36
11.0
2.5
230/50
155
X4D
FAST 2 AT
MICROCOMBI 27 MFFI
Gas valve
Spark
Water entry
generator
filter
SCHEMATIC
ROOM-SEALED FAN FLUE
23 MFFI - 27 MFFI
C
A
B
D
Combustion
analysis points
Air pressure
switch
Venturi
Central heating
temperature
probe
Expansion
vessel
3 bar safety valve
Circulation pump
with automatic air
release valve
E