Mynute Green k - Beretta Boilers

Mynute Green k
Condensing Wall-Hung Boilers
Residential Heating
Mynute Green k
The right choice for any installation requirements
The high flexibility of installation makes MYNUTE GREEN K the condensing appliance for any installation
requirements.
FRONT MOUNTED CONDENSING HEAT-EXCHANGER
Designed to provide high performance in compliance with the most strictest European directives, the front
mounted heat-exchanger in extruded aluminium assists in simple maintenance.
HIGH HEAD MODULATING LOW ENERGY PUMP (EEI<0,23)
complying with ErP directives in terms of efficiency and energy saving.
BUILT-IN CLAPET
Thanks to the built-in clapet, MYNUTE GREEN K is ready-to-install in case of 3CEp installation, translating
into time and money saving.
5:1 MODULATION RATIO
-20%
MYNUTE GREEN K range is ErP compliant
CO2 reduction
Beretta MYNUTE GREEN K complies with the European ErP regulations, which
will come into force on 26.09.2015.
From this date onwards, a new energy labelling will be implemented for
appliances and systems producing heating and domestic hot water and a
series of efficiency and emissions constraints will automatically exclude the
less performing classes of appliances. The new ErP regulations aim to help the
EU countries to reach by 2020 the “20-20-20” target, meaning a 20% reduction
of gas emissions; a 20% increase in the use of renewable energies; a 20%
reduction in global energy consumptions.
+20%
renewable
energies
-20%
energy
consumptions
High Efficiency Condensing Wall-Hung Boilers
MYNUTE GREEN K
Space heating function
Water heating function
XL
Seasonal space heating
energy efficiency class:
A (on all models)
A
- Load profile: XL
- Energy Efficiency Class:
A (on all combi models)
A
Sound power level
YZ
indoors
YZ
Saving energy, saving money
The new energy labelling, that according to the ErP
directive will be implemented in September 2015
for appliances and systems producing heating and
domestic hot water, means that all boilers and heating
systems will be labelled in the same way as “white
goods”, like washing machines and refrigerators.
The energy labelling will enable the end-users to
make realistic comparisons among different products.
By choosing high efficiency products, the end-users
will lower their energy bills, helping to safeguard the
environment.
Rated heat output
Specifications for each
model are detailed on
the back cover page
Mynute Green k
MYNUTE GREEN K range fully
complies with the European ErP
regulations:
Performance:
- seasonal space heating energy
efficiency class: A
- water heating energy efficiency
class: A
- water heating load profile: XL
A-Class high head modulating Low
Energy pump (EEI < 0.23).
Ideal for installation in low temperature
systems.
Condensing heat-exchanger in extruded
aluminium, with frontal access for a
simple maintenance.
Stylish and easy-to-use control panel,
equipped with a white backlight digital
display.
“Survivor” function in DHW mode,
allowing the boiler, in the event of failure
of the DHW NTC probe, to continue to
operate.
Condensing heat-exchanger
Reduced waiting time for DHW supply
thanks to pre-heating function.
Built-in climatic thermoregulation that
can be activated through the external
probe (as option) for a high comfort level
inside the house.
S.A.R.A. system: automatic temperature
control in heating mode.
Electrical protection IPX5D.
Hydraulic connections, gas and DHW
taps available as option.
Compatible with the hydraulic separators
Beretta CONNECT.
On MYNUTE GREEN K (natural gas
version), Beretta integrates as standard
the non-return valve (clapet) inside the
boiler for 3CEp installation (collective
positive pressure flue systems). See
details in the dedicated sections.
Rear flue outlet as option.
MYNUTE GREEN K can be converted to
LPG through specific LPG kit, available
as option.
Low Energy modulating pump
(A-Class)
“Survivor” function
Flame detector
Electrical protection IPX5D
ap for
Hinged flap
anel protection
control panel
hot water
Domestic ho
temperature selector/
Pre-heating activation selector
Hydrometer
White backlight
digital display
On/Off/Summer/Winter/Reset/
Heating temperature/”S.A.R.A.
function” selector
High performance through user-friendly controls
MYNUTE GREEN K features a user-friendly
control panel, which is located under a
hinged flap. Two ergonomic knobs allow
to easily control all the boiler functions.
The central heating knob activates also the
S.A.R.A. function. The white backlight digital
display on the control panel provides the
end-user immediately with all information
about the boiler status.
High Efficiency Condensing Wall-Hung Boilers
The right choice for any installation requirements
MYNUTE GREEN K is characterized by a
high flexibility of installation.
The output range covers 28 and 32 kW
1
2
(combi versions), that can be converted
from natural gas to LPG (with specific LPG
kit). Both models are ready-to-install for
collective flue systems operating at positive
pressure, thanks to the built-in non-return
valve (see details in the section below).
1
1
Double air inlet for twin system
2
Flue gas analysis
3
Condensate drain trap
4
Circulation pump with anti-blocking function
5
3-way valve with anti-blocking function
6
Electronic board with self-diagnostic function
7
Climatic thermoregulation (outdoor probe as option)
8
Flowswitch
12
9
Gas valve
11
10
Expansion vessel
11
Mixer
12
Fan
13
Non-return valve
9
14
Primary heat-exchanger
8
15
Rear flue outlet
15
14
13
3
10
4
5
7
6
Advantages on MYNUTE GREEN k
MYNUTE GREEN K features the nonreturn valve already integrated as
standard, translating into a quick and
money-saving installation.
The non-return valve (clapet) is a specific
device that allows the flues to flow through
it in only one direction, that is from the
burner to the flue outlet pipe.
Its function is therefore to avoid that the
flues come back into the boiler combustion
chamber, compromising the correct
combustion process. This can happen
for many reasons, for instance in case of
overpressure in the duct of a collective flue
system.
13
The non-return valve is usually supplied
as a specific optional kit to be installed at
the flue outlet of a boiler in case of 3CEp
installation (collective positive pressure flue
systems).
Only on MYNUTE GREEN K the nonreturn valve is located inside the boiler
(see drawing detail), making it readyto-install for 3CEp installation (collective
positive pressure flue systems), where the
non-return valve is a compulsory device.
15
The rear flue option in addition to the
standard top flue option provide a versatile
installation. Other flueing options available
are: horizontal, vertical and twin flue,
enabling the boiler to be sited almost
anywhere in the home.
Mynute Green k
MYNUTE GREEN K:
a dedicated condensing boiler for collective
positive pressure flue systems
S.A.R.A. system:
comfort and saving
MYNUTE GREEN K is equipped with the
Beretta patented S.A.R.A. system (Automatic
Temperature Control), which can be enabled
by moving the temperature control knob of
the central heating circuit to the “AUTO”
sector (between 55°C and 65°C).
With MYNUTE GREEN K, Beretta offers a
ready-to-install range for collective flue
systems operating at positive pressure.
Both in case of renovation of old blocks of
flats or in new buildings, with a collective
flue system operating at positive pressure,
you can benefit significant advantages
from Beretta MYNUTE GREEN K:
- quick and money-saving installation:
no need of any additional kit for the
external non-return valve;
- perfect integration in the old
collective flue system (provided the
ducts renovation in compliance with the
current rules), ensuring one chimney top
on the roof, instead of multiple terminals
along the façade.
The S.A.R.A system achieves the best
compromise between the average
temperature of the radiators and the
quickness in reaching the required room
temperature, while providing energy and
money saving.
When there is a demand for heating, the
appliance will automatically raise the heating
flow temperature twice by 5°C every 20
minutes, in order to heat the home more
quickly.
When the heating request has been
satisfied, the appliance will swich off
automatically till the next heating request.
At that point the boiler will start again at the
previously set flow temperature.
MYNUTE GREEN K is already 3CEp
certified, as it comes with integrated nonreturn valve (clapet) as standard.
Front mounted condensing heat-exchanger
MYNUTE GREEN K features an innovative
condensing heat-exchanger that, thanks to
the frontal access, enables a very simple
maintenance.
The condensing heat exchanger is
manufactured in a single aluminium pipe,
without weldings.
The high thermal conductivity of the
aluminium allows a more uniform
temperature distribution so that no hot
spots are present: this translates in a longer
life span of the exchanger. Moreover, the
aluminium is very resistant against the
corrosion.
The single-pipe layout (in-series circuit)
offers a wide section for the water passage,
with the consequent advantage of having
low head losses while preventing the deposit
both of limescale and impurities.
Pre-mixed
burner
Flue collector with flue
gas analisys and
condensate drain
Condensing
heat-exchanger
The condensing heat-exchanger allows to
recover a large part of the latent heat of the
gas flues, reducing in this way much of the
heat losses.
The premix burner optimizes the combustion
mixture while reducing NOx emissions to a
minimum.
High Efficiency Condensing Wall-Hung Boilers
KEY:
System: Return R/Flow F/Gas G
Domestic water: Outlet O/Inlet I
CDT: condensate drain trap
Technical drawings
D
A
218
View from above
B
102
98
98
102
water - gas
C
218
B
80,5
MYNUTE GREEN K 28 C.S.I.
MYNUTE GREEN K 32 C.S.I.
111.25
115
115
111.25
41
65
35
F
G
60
55
O
163.5
I
31.5
218
R
85
1.5
CDT
net
weight
A
B
C
D
28 C.S.I.
38
400
180
780
358
32 C.S.I.
39
400
180
780
358
TWIN OUTLET
CONCENTRIC OUTLET
111
218
164
126.5
218
For all flueing configurations please refer to the current local and national rules.
C Combi model (CH + DHW)
S Room-sealed
ENERGY LABELLING SPECIFICATIONS
(according to ErP regulations)
Seasonal space heating energy efficiency class
Water heating energy efficiency class
Declared load profile
Rated heat output
Seasonal space heating energy efficiency
AUXILIARY ELECTRICITY CONSUMPTION
At full load
At part load
In Stand-by mode
I Ionisation flame control
MYNUTE GREEN K
28 C.S.I.
MYNUTE GREEN K
32 C.S.I.
kW
%
A
A
XL
20
94
A
A
XL
24
94
W
W
W
27,7
10,0
2,4
37,0
12,8
2,4
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
%
%
%
%
%
%
IP
20,00
19,64
21,14
6,00
5,87
6,44
28,00
28,00
6,00
6,00
98,2
97,9
103,4
105,7
107,3
110,1
5
X5D
25,00
24,48
26,50
6,00
5,87
6,44
32,00
32,00
6,00
6,00
97,9
97,9
103,5
106,0
107,3
109,9
5
X5D
bar - °C
3 - 90
3 - 90
bar
l/min
°C
6 - 0,2
16,1
37 - 60
6 - 0,2
18,3
37 - 60
Ø
Ø
3/4”
1/2”
3/4”
1/2”
m
m
7,85
53+53
7,85
42+42
NG, LPG**
NG, LPG**
OTHER SPECIFICATIONS
CH nominal heat input
CH nominal heat output (80°-60° C)
CH nominal heat output (50°-30° C)
CH minimum heat input
CH minimum heat output (80°-60° C)
CH minimum heat output (50°-30° C)
DHW nominal input
DHW maximum output*
DHW minimum input
DHW minimum output*
Efficiency at max nominal output (80°-60° C)
Efficiency at min output (80°-60° C)
Efficiency at partial load 30% (47°C return)
Efficiency at max nominal output (50°-30° C)
Efficiency at min output (50°-30° C)
Efficiency at partial load 30% (30°C return)
NOx class
Electrical protection
CENTRAL HEATING
Maximum pressure - temperature
DHW
Maximum - minimum pressure
DHW production ΔT=25°C
Adjustable hot water temperature range
CONNECTIONS
CH flow - return/Gas
DHW inlet - outlet
FLUE PIPES AND AIR INTAKE
Max length (including 90° bend) for concentric 60-100mm
Max length for twin 80+80mm
GAS
Available gas versions
* average among the different functioning conditions in DHW
** LPG version available with conversion kit (as option)
Beretta is a Riello Group brand
Trading Address:
RIELLO SpA
Via Risorgimento, 23/A
23900 LECCO
Italy
Tel. +39 0341 277111
Fax +39 0341 277263
info@berettaboilers.com
www.berettaboilers.com
In order to improve its products, Beretta reserves the right to modify the characteristics
and information shown in this brochure at any time and without advance warning.
This brochure, therefore, cannot be considered as contractually binding on third parties.
2109_0 ERP EN 03/15
Technical data