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Pellet boiler

Hydro Silver

Convenient heating, without unnecessary expense

The Hydro Silver is a boiler based on our most advanced product, the Eko Silver III. Thanks to its increased water capacity, which acts as a heat buffer, maintenance and installation costs are significantly reduced by not having to install a domestic hot water (DHW) pump. The boiler is equipped with a copper anti-microbial coil that provides reliable hot water supply. The automatic cleaning function of the heat exchanger and pellet burner enhances convenience, making Hydro Silver a solution that combines efficiency and comfort.

The boiler has particulate emissions of less than 20mg/m3 of flue gas, thanks to which the boiler can receive the highest possible subsidy under the "Clean Air" program.

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przód innowacyjnego kotła centralnego ogrzewania dwufunkcyjnego na pellet Stalmark Hydro Silver - polecany zamiast pieców centralnego ogrzewania
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lewy przód innowacyjnego kotła centralnego ogrzewania 5 klasy dwufunkcyjnego na pellet Stalmark Hydro Silver - opcja dla osób rozważających zakup pieca - wydajność i komfort bez konieczności używania pieca
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Availability of domestic water depending on the boiler output
Hydro Silver

The coil provides a flow rate of 1.2 to 1.5 m3/h, which allows for a capacity of 49 to 61 kW. In practice, this means the availability of domestic hot water in the amount of:

10kW - from 120 to 175 liters

15kW - from 120 to 190 liters

20kW - from 125 to 195 liters

25kW - from 140 to 220 liters

40kW - from 215 to 300 liters

The amount of prepared water depends on the boiler water temperature settings (lower threshold for 60°C boiler water, upper threshold for 70°C boiler water).

It takes about 30 minutes to fully heat the coil and prepare hot water from scratch. This means that even in the event of high hot water consumption, the system quickly recovers to full capacity, providing constant access to heated water.

Hydro Silver
Advantages of the boiler

Warranty
for the tightness of the exchanger 60 months
Stalmark burner
with self-cleaning grate and firing function
DHW coil
our hygienically certified copper coils eliminate the risk of bacteria formation, such as Legionella
Water capacity
large water capacity of the boiler, together with a coil for heating domestic hot water, ensures efficient operation and a high level of safety
Cooperation with photovoltaics
The boiler is prepared as standard for the installation of an electric heater
Tubular exchanger
Boiler made of certified 6mm sheet metal with automatic cleaning
Effectiveness
lower electricity consumption due to the lack of need for a pump to power the coil
lewy przód innowacyjnego kotła centralnego ogrzewania 5 klasy dwufunkcyjnego na pellet Stalmark Hydro Silver - opcja dla osób rozważających zakup pieca - wydajność i komfort bez konieczności używania pieca

Characteristics

Type of boiler: with feeder

Tank: 170L - 10kW, 220L - 15kW, 20kW and 25kW, 300 - 40kW

Power available: 10kW, 15kW, 20kW, 25kW, 40kW

5 emission class: 10kW, 15kW, 20kW, 25kW, 40kW

Reduced particulate emissions of less than 20mg: 10kW, 15kW, 20kW, 25kW, 40kW

Ecodesign: 10kW, 15kW, 20kW, 25kW, 40kW

Fuel type: 6-8mm wood pellets

Energy efficiency: A+

Controller: ST 978T

Standard equipment:

  • ST 978T controller supporting 5 pumps, 2 mixing valve actuators and 2 room controllers
  • self-cleaning burner
  • igniter
  • external sensor

Additional equipment:

  • WIFI RS module
  • room controller ST 281
  • control of second mixing valve.

Boiler data
Hydro Silver

Move to read data

Boiler POWER [kW]Boiler HEATING AREA [m2]MAX. HEATING AREA [m2]
101.4up to 125
151.65up to 185
202.07up to 250
252.38up to 300
404.18up to 480

Boiler specifications
Hydro Silver

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Parameterunit10kW15kW20kW25kw40kW
Nominal powerkW1015202540
Power RangekW3.0-104.5-156.0-207.5-2512.0-40
Heating aream21.41.652.072.384.18
Area of heated rooms*m2up to 125up to 185up to 250up to 300up to 480
Max. permissible operating pressureMPa0.150.150.150.150.15
Flue gas draft requiredPa1015152020
Disposable Bin Fuel Fillingl170220220220300
Supply water temp [min/max]°C60/8060/8060/8060/8060/80
Minimum return water temp.°C5555555555
Boiler Weightkg320355395430590
Fuel Burning Periodh4051353021
Fuel Filling Opening Dimensionsmm370x370370x480370x480425x315425x315
Exhaust gas temperature for nominal/minimum power°C99/64116/73148/90136/94121/79
Exhaust gas mass flux for nominal/minimum powerkg/h25.2/9.730/1212.1/4.652/20.527.1/9.3
Boiler Water Capacityl145160175200263
Minimum chimney heightm66668
Boiler efficiency%90.591.291.591.792.1
Flue Dimensions∅ or mm160180180180180
Supply and Return Diameter (female threaded couplers)in1"1"1"1"1"
Electrical Power SupplyV/Hz230/50230/50230/50230/50230/50
Energy Efficiency Class-A+A+A+A+A+
5 class-yesyesyesyesyes
Ecodesign-yesyesyesyesyes

*the area given refers to the heating power requirement of 80W/m2

Ask a representative about choosing the perfect boiler

Hydro Silver

Hydro Silver is a pellet boiler designed for users who value convenience, efficiency and safety. Thanks to the built-in hygienically certified copper hot water exchanger, users can enjoy reliable hot water without the risk of developing bacteria such as Legionella. Automatic cleaning of the burner and exchanger ensures maintenance-free operation of the unit, which reduces the need for maintenance and facilitates daily use. The boiler meets Ecodesign and Class 5 emission standards, guaranteeing environmentally friendly and efficient heating.

The Hydro Silver boiler is equipped with advanced features that make it ideal for modern households. The enlarged water capacity, which acts as a heat buffer, ensures stable operation of the heating system while saving space in the boiler room. Thanks to cooperation with photovoltaic installations and the possibility of installing an electric heater, users can make the most of renewable energy sources. Standard equipment includes the ST 978T controller, operating pumps and controllers, which translates into full control over the operation of the boiler.

Logo Stalmark - producenta kotłów centralnego ogrzewania 5 klasy
Certyfikat 5 klasy kotła centralnego ogrzewania Stalmark
Certyfikat Ecodesign kotłów centralnego ogrzewania firmy Stalmark

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