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MYNUTE GREEN C.S.I. - R.S.I.
DHW system emptying (C.S.I. only)
The hot water system must be emptied every time there is risk of freezing
by:
• Turning off the tap at the mains.
• Turning on all the hot and cold taps.
• Emptying out the lowest parts of the system.
9 - FUMES EXHAUSTION AND BURNING AIR SUCTION
9.1 - Exhaustion configurations (Fig. 9.1-9.2)
Boiler is homologated for the following exhaustion configurations:
B23P/B53P - Intake inside and outlet outside.
C13 - Concentric wall exhaustion. Pipes can separately start from boiler, but
outlets must be concentric or close enough to be subject to similar wind
conditions (within 50 cm).
C23 - Concentric exhaustion in common chimney (suction and exhaustion in
the same chimney).
C33 - Concentric roof exhaustion. Outlets like C13.
C43 - Exhaustion and suction in common separate chimneys, but subject to
similar wind conditions.
C53 - Wall or roof separate exhaustion and suction in different pressure
areas. Exhaustion and suction must never be located on opposite walls.
C63 - Exhaustion and suction with separately certified and sold pipes (1856/
1).
C83 - Single or common chimney exhaustion and wall suction.
Refer to regulations in force for exhaustion of combustion products.
Products of combustion are evacuated by a centrifuge fan located inside the
air distribution box which is constantly monitored by the control board.
Boiler is provided for without fume exhaustion/air suction kit, since forced
draught sealed chamber accessories can be used, as they better adapt to
installation characteristics.
For fume extraction and burning air restoration in boiler, use original pipes or
other EC-certified pipes with equivalent characteristics; check connection is
correct as shown on instructions fume accessories provided for with. More
appliances can be connected to a single chimney, provided that all appliances
are sealed chamber type.
Boiler is a C-type appliance (sealed chamber) and must be safely connected
to fume exhaustion duct and burning air suction duct, both getting outside;
appliance cannot operate without these ducts.
9.2 - "Forced open" installation (Type B23P/B53P)
Fumes outlet duct Ø 80 mm (9.3-A)
The fumes outlet duct can be aimed in the most suitable direction for
installation needs.
To install follow the instructions supplied with the kit.
In this configuration, the boiler is connected to the Ø 80 mm fumes outlet
duct by means of a Ø 60-80 mm adaptor.
In this case, the combustion supporting air is taken from the room in
which the boiler is installed, which must be a suitable and ventilated
technical room.
Non-insulated fumes outlet ducts are potential sources of danger.
The fumes outlet duct must be inclined 1% towards the boiler.
The boiler automatically adapts ventilation according to the type of
installation and the length of the duct.
Max length fumes
outlet duct Ø 80 mm
28 C.S.I.
70 m
32 C.S.I.
60 m
36 C.S.I.
60 m
12 R.S.I.
60 m
15 R.S.I.
70 m
25 R.S.I.
70 m
35 R.S.I.
70 m
9.3 - Installation "sealed" (Type C)
The boiler must be connected to concentric or twin fumes discharge and air
intake ducts which must both be taken outside. Do not use the boiler without
them.
Concentric ducts (Ø 60-100 mm) (Fig. 9.3-B)
The concentric outlets can be placed in the most suitable direction for the
requirements of the installation, respecting the maximum lengths shown in
the table.
The fumes outlet duct must be inclined 1% towards the boiler.
Non-insulated fumes outlet ducts are potential sources of danger.
The boiler automatically adapts ventilation according to the type of
installation and the length of the duct.
Do not obstruct or narrow the comburent air inlet duct in any way.
6
To install, follow the instructions supplied with the kits.
Horizontal
28 C.S.I.
32 C.S.I.
36 C.S.I.
12 R.S.I.
15 R.S.I.
25 R.S.I.
35 R.S.I.
Vertical
28 C.S.I.
32 C.S.I.
36 C.S.I.
12 R.S.I.
15 R.S.I.
25 R.S.I.
35 R.S.I.
Concentric ducts (Ø 80-125) (Fig. 9.3-B)
The relative adapter kit must be installed for this configuration. Concentric
ducts can be arranged in the most suitable direction for installation
requirements. To install, follow the instructions provided with the specific kits
for condensation boilers.
28 C.S.I.
32 C.S.I.
36 C.S.I.
12 R.S.I.
15 R.S.I.
25 R.S.I.
35 R.S.I.
Twin ducts (Ø 80 mm) (Fig. 9.3-C)
The twin ducts can be aimed in the most suitable direction for installation
needs.
To install, follow the instructions supplied with the specific kits for condensation
boilers.
28 C.S.I.
32 C.S.I.
36 C.S.I.
Pressure drop for each
12 R.S.I.
bend (45°/90°) [m]
15 R.S.I.
25 R.S.I.
35 R.S.I.
0,5 / 0,8
Max. linear length concentric
duct Ø 60-100 mm
7,80 m
7,80 m
7,80 m
7,80 m
7,80 m
7,80 m
7,80 m
Max. linear length concentric
duct Ø 60-100 mm
8,80 m
8,80 m
8,80 m
8,80 m
8,80 m
8,80 m
8,80 m
Rectilinear length means without bends, outlet ends and connections.
Linear length concentric
duct Ø 80-125 mm
25 m
25 m
25 m
17 m
25 m
25 m
25 m
Rectilinear length means without bends, outlet ends and connections.
The fumes outlet duct must be inclined 1% towards the boiler.
The boiler automatically adapts ventilation according to the type of
installation and the length of the ducts. Do not obstruct or narrow the
ducts in any way.
The maximum lengths of individual pipes are shown in the graphs (Fig.
9.4).
The use of longer ducts will reduce the power output of the boiler.
Linear length twin
duct Ø 80 mm
40 + 40 m
35 + 35 m
35 + 35 m
40 + 40 m
40 + 40 m
40 + 40 m
40 + 40 m
Rectilinear length means without bends, outlet ends and connections.
Pressure drop for each
bend (45°/90°) [m]
0,5 / 0,8
Pressure drop for each
bend (45°/90°) [m]
0,5 / 0,8
Pressure drop for each
bend (45°/90°) [m]
0,5 / 0,8
Pressure drop for each
bend (45°/90°) [m]
0,5 / 0,8
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