Water fireplaces

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Water fireplaces ModelsWhy are we elected?PlanningConnection systemQualityDifferences between series
Water fireplaces

Choosing the best quality you choose the most savings.

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

The Gavryliv & Sons fireplaces design maximizes the look of flames from all angles, so the fireplace creates 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 are we elected?

Highest quality

Choosing the best quality you choose the most savings, because our furnaces are modern and of high quality materials, with thoughtful appearance and high reliability and a wide dynamic range of work.

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

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

 

 

 

Pure glass 80%
The main amount of air through the 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 most efficient combustion. To ignite and maintain a high temperature 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:

  • The automatic air supply control overlaps and immediately extinguishes the firebox in cases:
    • power failure
    • exceeding the set water temperature
  • The cooling circuit installed in the furnace, in case of exceeding the set water temperature, will cool the main water circuit with running water (the installation involves a constant source of flowing water, independent of local energy sources)
  • Open system – the best protection for safe use, since even in the case of uncontrolled combustion and failure of all previous systems, it will provide free boiling of the firebox and the release of excess water and water vapor. It is enough to refill it with water to restore the system.
  • Uninterruptible power supply unit(optional) ensures the operation of the system in case of power failure in the network. Particularly effective are the units with external batteries, which allow you to adapt the capacity to the characteristics of the network in the region.

 schott_robaxGlass ceramics

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


Combustion chamber

The chamber is lined with Wolfshöher Tonwerke GmbH & Co chamotte 40mm thick. Chamotte plates Wolfshöher Tonwerke GmbH & Co have the best physico-technical performance. For example Wolfshoehe chamotte has the best performance of the Zeger cone and the number of wet cycles.

System without ashpan

The bottom of the furnace is lined with special ceramics (chamotte or stone ceramics) to maintain extremely high combustion temperatures (near 1100С) and allows the fuel to burn completely. The cleaning of the firebox will no longer be a problem, because during normal use, ash selection occurs no more than once a week.


Hermetic furnace fireplace

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

Air supply system

A single air duct allows you to flexibly select the air source into the furnace (outdoor air supply or from the room) and a way to control it  (manual or automatic). Streams are distributed inside firebox.


Height adjustment

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

 

 

 

 How does it works?           

The picture shows a cross section of a firebox. Arrows indicate the location of air flows. The cross section of the air supply duct provides the optimum distribution for primary firing and the clear glass system. For the self-cleaning of the glass from the upper channel, air flows, washing it and forming a protective screen, resulting in it self-cleaning(soot and dust that settle on the glass are burned as the temperatures rise).  Profile of which the door is made is whole-bent with a special groove for the sealing cord, this design prevents air from penetrating through the cracks and ensures the sealed of furnace. Clean glass system does not violate the tightness of the furnace chamber. These technological solutions help the firebox to work effectively.

 

   76x62WM cross-section

 

Planning

Choose a fireplace for the house should be carefully considered, because it will serve as a source of heat and comfort. The power and dimensions of the furnace should be chosen according to the needs of the fireplace room, method of heat distribution and accumulation, since the desire to install a large firebox in a small room will lead to its rapid overheating and the effect of the sauna, and trying to reduce power to dirty glass and unpleasent odor.

Power calculation of the furnace

The heat released from the burning of firewood first enters the fireplace room through the glass. The combustion temperature of firewood and pyrolysis gases can be 900-1200C, depending on the efficiency of synthesis and wood. Further hot flue gases, evenly heated to a temperature of 600-800C, leaving the combustion chamber enter the heat exchanger, where through the steel walls heat is transferred to the water circulating in the walls of the furnace and the heat exchanger. When heated to 70-80C, the water carries heat that can be used immediately for heating and domestic purposes, or saving in a accumulation buffer capacity for later use. The flue gases are cooled to a temperature of 180-220C and come out in chimney.

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

For example, if the area of ​​a room is about 35-40 square meters, you can count on heat losses about 3 kW (this value is statistical and requires separate study in case of installation). From the power fraction of the furnace it follows: 3kW / 30% = 10kW of rated power. Should not be chosen the power of the furnace so that its nominal power exceeds that value substantially; at the same time, too little power will not provide enough heat.

The burning nature of firewood implies nonlinearity of heat release, so characterizing it represent a graph of combustion:

Instead, the room heat loss is about the same as the previous hour and the next. To ensure uniform heating the room by the heat of the fireplace, it is possible by redirecting this heat and being able to accumulate extra for further use in the future.

It is possible to calculate the amount of heat released during combustion from the amount of firewood laid: 1kg of firewood give 3.5kW*hour of the heat. Burning 4kg in 2 hours can be obtained: 4kg * 3,5kW*hour/kg = 14kW*hour, 14kW*hour / 2hour = 7kW.

Accumulating buffer tank

The house does not always have the same and uniform heat consumption: changing weather and time of day significantly affect the amount of heat needed to maintain a comfortable room temperature. On the other hand, the firewood in the fireplace burns unevenly, and there is not always time and desire to put wood in, so different amounts of heat are generated from burning during the day. Accumulating buffer tanks must be used to maintain a comfortable temperature and efficient combustion, allowing to store and accumulate all the extra heat from burning firewood, and for a long time when the fire goes out and the fireplace will not give heat, to maintain the room temperature by the kept heat.

In the buffer tank, the water can be heated to 80C. If the temperature of the heating system is about 40C, the temperature difference will be 40C. Cumulative capacity of the tank of 500l ~ 23,3kW*hour, that can be used later.

In most cases, you should choose a capacity of 30-50l per 1kW of water circuit capacity. You can choose a smaller volume if the furnace capacity is small 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_2505If home heat loss is known, you should also consider the amount of firewood consumed during the heating season. This issue is important given that if the heat losses of the home are too large, then a fireplace as the main heat source may be impractical. In any case, the calculation of the amount of firewood per season should be done, because in advance you need to know the upper limit of possible consumption.

Of course, the amount of wood burned directly depends on many factors, such as: the heated area, 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 square meters should be stored 10 metric meters solid firewood.

This can sometimes be calculated by design data. Isolated Medium house 150 sq.m. in the cold period loses about 7kW of heat. So, this is exactly what we need to compensate. 7 kw : 3,5 kW*hour/kg = 2 kg per hour. In this case, it will be burned daily 2 kg * 24 hour = 48 kg firewood. If we count 4 laying a day, we get: 2 kg * 24 h / 4 laying = 12 kg – this is the weight of each laying.

Connection system

Quality

Quality
Buying a Gavryliv & Sons firebox gives you a product that is made by skilled workers and undergoes several quality checks. All furnace models are tested on the stand, including stress tests to ensure a high level of safety and many years of hassle-free, happy use.
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