Water fireplaces

Home » Water fireplaces
Water furnacesModelsWhy do people choose us?PlanningConnection systemQualityDifferences between series
Water furnaces

Choosing the best quality you choose the most savings.

The best way to collect heat effectively from a fireplace and distribute it indoors is to install a firebox with a water circuit with a buffer. Using such a fireplace does not differ from ordinary air fireplace, but the accumulated heat in the buffer warms the house for longer time.

The design of Gavryliv & Sons fireplaces provides the maximum flame view from all angles, so the fireplace will create a romantic mood for pleasant and unforgettable moments.

Models


70x52WM
24кВт
Technical documentation


76x62WM
26кВт
Technical documentation


95x52WM
26кВт
Technical documentation

 


74x37x44WMR
18кВт
Technical documentation


74x37х44WML
18кВт
Technical documentation


b60x42W+
13кВт
Technical documentation


b70x52W+
16кВт
Technical documentation

 

Why do people choose us?

The highest quality

Choosing the best quality You choose the most savings, because our furnaces are made of modern design and of high quality materials, the exterior is well thought out and provides high reliability with a wide dynamic range of operation.

  1. There is no universal choice. . Each room and layout needs its own technical and aesthetic solution. Contact your local representative for detailed advice.

  2. The body of the furnace is designed for heavy loads, which, with proper care, guarantees long and reliable operation.

 

 

 

Clean glass 80%

The main amount of air, coming through special channels with the least resistance, passes near the door frame, cooling it, and washes the glass from above, protecting it from soot and performing the role of secondary combustion. 80% of the air is supplied to the glass, so the wide air curtain keeps the glass clean for a long time.

Easy ignition 20%.

Part of the air enters the bottom of the combustion chamber for easy ignition and the most efficient combustion. To ignite and to maintain a high temperature, the air supply is limited to 20%.


Safety

Cooling circuit of the furnace

Gavryliv & Sons water-based firebox systems are completely safe thanks to a multi-stage protection system:

  • Automatic air supply is blocked and immediately extinguishes the fire in case of:
    • power failure
    • Exceeding the set level of water temperature
  • The cooling circuit installed in the furnace, in case of exceeding the set level of water temperature, will cool the main water circuit with running water (the installation provides a constant source of flowing water, which does not depend on local energy sources)
  • An open system is the best protection for safe usage, as even in case of uncontrolled combustion and failure of all previous protection systems, it will provide a free boiling of water and the eject of excess water and water vapor. Refilling the system with water is sufficient to restore it.
  • The uninterruptible power supply unit (optional) ensures system work during power failure in the grid. Blocks with external batteries are especially effective because they allow you to adapt the capacity to the peculiarities of the electricity grid in the region.

 schott_robaxGlass ceramics

Reliability of heat-resistant ceramics for a pleasant combustion view thanks to SchottROBAX glass ceramics.

 

 

Paint

Senotherm® paint is used to cover the firebox. Because solidification occurs at room temperature, the end user has no inconvenience about smoke and odor when using the appliance for the first time. This makes senotherm® the ideal end-user solution for health and environmental friendliness.


Combustion chamber

The camera is lined with oven chamotte 40mm Wolfshöher Tonwerke GmbH & Co.  Chamotte plates Wolfshöher Tonwerke GmbH & Co have the best physical and technical indicators. For example, Wolfshoehe chamotte has the best indicator of Zeger cone and the number of wet cycles.

System without ashpan

The bottom of the furnace is lined with special ceramics (chamotte or composite fireplace ceramics) to maintain extremely high combustion temperatures (about 1100C) and allows the fuel to be completely burned. The cleaning of the furnace will no longer be a problem, because during normal use cleaning of the ash occurs not more than once a week.


Sealed furnace

All firebox nodes are sealed and the combustion air is supplied through a single inlet duct, which guarantees the best controllability of combustion.

Air supply system

A single air duct allows you flexibly to select the air source into the furnace (external air supply or from the room) and the control method (manual or automatic).  The flow distribution has already proceeded inside the firebox.


Height adjustment

The standard furnace includes high reliable legs for a wide range of height adjustment. Also, to adjust the level of the legs have additional adjusting bolts with hinged heels, which allow you to fine-tune the level and firebox height on any surface. It has easy installation.

 

 

 

 How does it works?           

The picture shows us a cross-section of a firebox. Arrows indicate the location of air flows. The cross section of the air supply duct provides the optimum air distribution for primary firing and the clear glass system. From the upper duct, air is fed to self-clean the glass, washing it and forming a protective screen, resulting in self-cleaning (soot and dust that settle on the glass is burned as the temperature rises). The material of which the door is made is fully bent with a special groove under the sealing cord, this design prevents air from penetrating through the cracks and ensures that the furnace is sealed. Clean glass system does not break the tightness of the furnace. Especially these technological solutions help the firebox to work effectively

 

   76x62WM cross-section

 

Planning

You should carefully choose a fireplace for the house, because it will serve as a source of heat and comfort. The power and dimensions of the furnace should be chosen with taking into account the needs of the fireplace room, the method of distribution and the heat retention, because the desire to install the big firebox in a small room will lead to its rapid overheating and the effect of sauna, and the effort to reduce the power will lead to dirty glass and odor.

Calculation of the furnace power

The heat released from the burning of firewood first enters the room with a fireplace through the glass. The temperature of firewood combustion and pyrolysis gases can be 900-1200C, depending on the efficiency of synthesis and wood. Further, hot flue gases, which are evenly heated to a temperature of 600-800C, leaving the combustion chamber enter the heat exchanger, where through the steel walls they transfer heat to the water, circulating in the walls of the furnace and the heat exchanger. When heated up to 70-80C, the water carries heat that can be used immediately for house heating and domestic purposes, or stored in a storage tank for later use. The flue gases are cooled to a temperature of 180-220C and reach the chimney.

The power portion of the furnace emitted through the glass is about 30%. If the glass is double, then this proportion is reduced to 18%.  The remaining heat can be transferred to the furnace surface or the water circuit.

For example, if the room area is about 35-40 square meters, you can expect heat losses of about 3kW (this data is statistical and requires separate study in case of installation). From a fraction of furnace power it follows: 3 kW / 30% = 10 kW of capacity. The furnace power should not be selected so that its capacity exceeds that value substantially; at the same time, very low power will not provide enough heat.

The nature of wood burning implies nonlinearity of heat output, so characterizing it, we present a chart of burning:

Instead, the room heat loss is about the same as the previous hour and the next. We can ensure that the room is heated evenly by the heat from the fireplace by redirecting that heat and being able to accumulate extra heat, and then use it in the future.

It is possible to calculate the amount of heat that will be released during combustion from the number of laid firewood: 1kg of firewood will leave 3.5kW * h of heat. Burning 4 kg in 2 hours you can get: 4 kg * 3.5 kW * h / kg = 14 kW * h, 14 kW * h / 2 h = 7 kW.

Accumulating buffer tank

The house does not always have the same and even heat consumption: weather changing and time of the day significantly affect the amount of heat that is needed to maintain a comfortable room temperature. On the other hand, the firewood in the fireplace burns unevenly, we do not always have the time and desire to put firewood in the fireplace, so different amounts of heat are released from burning during the day. To maintain a comfortable temperature and efficient combustion, it is necessary to use accumulating buffer tanks, which allow to store and accumulate all the excessive heat from firewood burning, and after a while, when the fire goes out and the fireplace will not give the heat, maintaining the temperature in the room with the help of stored heat.

In accumulating buffer tank, the water can be heated up to 80C. If the temperature of operation of heating system is about 40C, so the temperature difference will be 40C. Accumulative capacity of 500L ~ 23.3 kWh, which can be used in the future.

In most cases, you should choose a tank of 30-50 liters per 1 kW of power of the water circuit. You can choose a smaller volume if the furnace power is not so high compared to the house heat loss (30l per 1kW) or larger if the house has a small heat loss (50l per 1kW).

 

Calculation of firewood consumption

IMG_2505

If home heat loss is known, you should also consider the amount of firewood consumed during the heating season. This issue is important because if the house heat losses are too big, then a fireplace as the main heating source may be impractical. In any case, the calculation of the amount of firewood per heating season should be done, as you need to know in advance the upper limit of possible consumption. Of course, the amount of wood depends directly on many factors, such as: the area being heated, the temperature outside, the humidity and the breed of firewood, as well as their quality. However, for an average insulated house with an area of 150 sq. m., we have to store about 10 metric skladometra of solid wood.

Sometimes this can be calculated by design data. House of average isolation 150 sq.m. in cold period loses about 7kW of heat. So, this is exactly what we need to compensate. 7 kW: 3.5 kW * h / kg = 2 kg per hour. In this case, we will burn 2 kg * 24 h = 48 kg of firewood every day. If we put firewood 4 times a day, we get: 2 kg * 24 h / 4 times = 12 kg – this is the firewood weight for each time.

Connection system

Quality

Quality

Buying Gavryliv & Sons firebox you get a product that is made by the skilled workers and goes through several stages of quality checks. All firebox models are tested on the stand, including stress tests to ensure a high level of safety and trouble-free, happy usage for many years.

Guarantee

By accepting quality as a rule, Gavryliv & Sons accepts product liability, so a five-year warranty applies to all the company’s products.

Differences between series

 

 
В-серія
N-серія
М-серія
Core
Thickness of steel
4mm
4mm
4mm
Linning
heat resistant concrete
Chamotte Wolfshoehe
Chamotte Wolfshoehe
Air furnace
no
yes
yes
Water furnace
yes
no
yes
Thickness of lining
35мм
30мм
40мм
Deep bottom
no
yes
yes
First deflector
yes
yes
yes
Vermiculitis
yes
yes
yes
Stainless steel
no
no
option
Second deflector
no
no
yes
Vermiculitis
no
no
yes
Stainless steel
no
no
option 2mm
Height adjustment
50mm
100mm
100mm
Air supply connection points
1
2
2
Modularity
no
no
yes
Suitability to hypocaust
no
no
yes
Suitability to accumulation
no
no
yes
Pipe heat exchanger block
yes
yes
Doors
Printed surface glass
yes
yes
yes
Restyling handle
yes
yes
yes
Possibility of changing the opening side
yes
yes
yes
Installation of mounting frames
Air furnace
yes
yes
Water furnace
yes
yes