Gas ADAPTIVE Stainless Steel Exchanger Dina 25 | Biasi Caldaie
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Dina 25 Gas ADAPTIVE Stainless Steel Exchanger

Gas ADAPTIVE Stainless Steel Exchanger Dina 25
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    MODULATION 1:5

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    25 kW

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    WATER FOR HEATING

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    DOMESTIC HOT WATER

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    ENERGY CLASS WITH KIT

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    GAS ADAPTIVE

Technical data Documentation Request info
DINA is the new line of wall-mounted Condensation boilers from BIASI, with excellent performance.

Amongst one of the most compact boilers available today the DINA provides A Rated efficiency reducing your energy bills. It has a stainless-steel condensing exchanger with self-cleaning function, has an intuitive digital control panel. Available in 25, 30 and 35 kW Outputs, it is also certified to work up to 20% of hydrogen and with its compact dimensions of: (706x400x245mm).

Main features

With its advanced Gas Adaptive Technology, the Dina manages to minimize consumption and optimize efficiency: through this system the boiler can automatically detect the characteristics of the gas and adjusts to maximize the level of efficiency, thus reducing consumption and emissions.

  • H2 Ready / 20% hydrogen
  • Carrying out combustion analyses gas automatic
  • A single model for METHANE and LPG
  • 1:5 modulation
  • Total premix burner made of stainless steel (NOx Class 6)
  • 7-liter expansion tank
  • Low consumption modulating circulator pump
  • Digital control panel with backlight display
  • Predisposition for thermostat modulating/remote control and probe external

Primary heat exchanger in stainless steel

The primary heat exchanger consists of:

  • A compact, large-section, oval mono-spiral, made with selfcleaning technology
  • Patented high efficiency fume circuit
  • Single combustion chamber that allows the total cleaning of the exchanger
  • Smoke box in high-performance composite material performance

The water flow is uniformly distributed and guarantees a heat exchange homogeneous. Pressure losses are reduced thanks to the large section of the heat exchanger. The ease of cleaning and the robustness of this exchanger are two of the main advantages, since they allow its use both in new installations and in older systems.

Panel functionality

  • Summer/winter/off selection
  • Heating Temperature Regulator
  • Domestic Hot Water Temperature Regulator
  • Domestic Hot Water Temperature and Central Heating Display
  • Fault Diagnostic Display

Thermoregulation

To obtain class A+ it is necessary to fit a modulating thermostat plus one external probe to the system, which modulates the temperature of the central heating water depending on the external and internal temperature guaranteeing the maximum comfort and optimizing consumption.

Dimensions

dimensioni

Technical data

Nominal heating d.h.w. heat input
kW
21,0/26,0
Minimum heat input for heating/d.h.w
kW
5,2/5,2
Maximum useful heating/sanitary power 60°/80°C *
kW
20,7/25,6
Minimum useful heating/heating power 60°/80°C *
kW
4,9/4,9
Maximum useful heating/sanitary power 30°/50°C **
kW
22,6/28,0
Minimum useful heating/sanitary power 30°/50°C **
kW
5,5/5,5
Quantity of condensate at Q.nom. 30°/50°C (in heating mode) **
l/h
4,2
Quantity of condensate at Q.min. 30°/50°C (in heating mode) **
l/h
0,8
Condensate pH
Ph
4,0
Nom. efficiency 60°/80°C *
%
98,58
Min. efficiency 60°/80°C *
%
94,0
Nom. efficiency 30°/50°C **
%
107,8
Min. efficiency 30°/50°C **
%
105,9
Efficiency at 30 % load **
%
109,75
Energy efficiency ηs
%
94
Thermal losses at the chimney with burner in operation
Pf (%)
1,1
Thermal losses at the chimney with off turned burner ΔT 50°C
Pfbs (%)
0,2
Thermal losses to the environment through the casing with the burner in operation
Pd (%)
0,3
NOx class
6
Weighted NOx [Hs] ***
mg/kWh
28
Minimum/maximum heating temperature ****
°C
25 / 80
Minimum/maximum heating pressure
bar
3
Available heating head (at 1000 l/h)
mbar
410
Expansion tank capacity (total/useful)
l
7
Minimum/maximum d.h.w temperature
°C
35 / 55
Minimum/maximum d.h.w pressure
bar
0,3 / 10
Maximum flow rate (Δt = 25 K) / (Δt = 35 K)
l/min
14,9/10,4
Specific d.h.w flow (Δt = 30 K) *****
l/min
12,5
Voltage / electric power at nominal heat input
V~/ W
230/94
Electric power at minimum heat input
W
12
Electric power in stand-by
W
3
Electric degree of protection
IPX5D
Minimum/maximum flue gas temperature#
°C
36/76
Minimum/Maximum flue gas mass flow rate #
kg/sec
0,0024/0,0120
Minimum/maximum air mass flow rate #
kg/sec
0,0023/0,0116
Max. length of coaxial smoke outlet (Ø 60/100 mm / Ø 80/125 mm)
m
10 / 15
Max length of split flue exhaust (Ø 80+80 mm)
m
40
Height x Width x Depth
mm
700 x 400 x 268
Weight
kg
31,5
Water content of the boiler
l
2
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