Fireplaces

Highest quality

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

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

Clean glass 80% The main amount of air through the special channels with the least resistance passes near the door frame, cooling it, and from above it washes the glass, 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 kindling 20% Part of the air enters the bottom of the burning chamber for easy ignition and most efficient combustion. To ignite and maintain a high temperature air supply is limited to 20%.

Glass ceramics

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

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

Combustion chamber

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

No ashpit system

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, ash removal occurs at least once a week.

Hermetic furnace fireplace

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

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 control method (manual or automatic). The streams are distributing 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, they have additional adjusting bolts with hinged heels, which allow you to fine-tune the level and height of the firebox on any surface. Easy installation.

                                                How does it work?

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 self-cleaning glass from the upper channel is supplied with air washing it and forming a protective screen that makes 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.

70x52TM cross-section

Calculation of the power of the furnace

The power of the heating devices should always be calculated from the room heat losses (actual, or calculated). Actual heat losses throughout the day may fluctuate, which can be represented as follows:

Gray: room heat loss

Accordingly, a strategy is formed and the equipment is selected, that will try to maximize the heat loss power curve formed from the burning of firewood.

Air-fired fireplace chambers are powerful heat sources and can operate continuously during the heating season. The main advantages of such devices are:

• High output power that can heat large volumes of air in a short time;
• Easy to install, which does not require qualification hydraulics or stove-maker;
• High reliability and system energy independence.

Despite its many advantages, the main disadvantage of a simple convective system is its low inertia, which bound with nature of the combustion and the inability of air fireplaces to store heat. An air fireplace without automatic control of the combustion process will give off heat as follows:

Gray: room heat loss; red: heat release by air fireplace

First comes the rapid сombustion of firewood, peak burning, and then the same intense fading, which extended by heat transfer from coal, which burns out for the next few hours. Such heat output does not reproduce the heat losses of the room very well, but if the latter is reasonably acceptable temperature fluctuations, then periodic burning by the fireplace can significantly or even completely solve the heating issue. That is why air fireplaces are the perfect solution for:

• Temporary accommodation, such as vacation and holiday homes
• A permanent residence with another main source of heat that equalizes temperature fluctuations

On the technical side, the power of the firebox should be calculated in accordance with the installed system (with or without heat dissipation channels) and the heat loss of the premises planned to be heated by the fireplace. So the room with the fireplace will emit the most heat from the fireplace lining and glass.

The power fraction of the furnace emit through the glass is about 30%. For fireplaces with glass sizes over 80cm wide and 60cm high, this value will increase to 40-50%.

That is, the heat loss of the room where the fireplace is located should be such that heating the fireplace does not create discomfort. For example, if the area of ​​the room is about 35-40 square meters., can be calculated heat losses of about 1-3kW (this value is statistical and requires separate investigation in case of establishment). From a fraction of the power of the furnace follows: 3kW/30%=10kW rated power. The power of the furnace should not be chosen so that its nominal power is substantially higher than this value; at the same time, too little power will not provide enough heat.

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

Long burning mode

With unregulated combustion in the firebox, the firewood burns too fast, giving off more heat than the heat exchanger designed for it, as well as creating uncomfortable temperature changes. To prolong the burning time in practice often use the mode of prolonged combustion, when due to 2-5% of burning completeness is achieved a significant increase in the efficiency of heat transfer. This mode involves reducing the air supply to 1/2-1/4 from the maximum open position of the throttle after the fireplace has reached intense combustion and the soot from ignition will start to burning out. In this case, it is possible to prolong the heat output from the fireplace for more than an hour.

WARNING! Long-burning mode is possible and advisable only in the case of high-temperature devices with lined combustion chambers. Low-temperature fire chambers, when reduced air volume, will cover inside by soot and cover with a thick layer of soot the chimney, which can cause a fire.

WARNING!The continuous combustion mode can be used as long as the air shortage will not cause the soot to form on the walls of the furnace and the glas. In the case of its formation, the intensity of combustion should be increased. The use of firebox in mode which form soot is forbidden.

The best way to reduce the accidental factor in regulating the air flow for prolonged combustion is to install appropriate fireplaces avtomatics that regulate the air flow by controlling the temperature in the combustion chamber or the temperature of the flue gas at the outlet from the furnace to the chimney.

Extra glass

Extra glass reduces radiation through the door by 30% without affecting the fire view. Due to the double glass in the firebox, high temperatures are developed faster for efficient combustion.

We recommend installing double glass:

1. for large furnaces, or to reduce the risk of overheating of the fireplace room
2. for fireplaces with water circuit and accumulation

Hot air distributor

For carrying heat from the fireplace to adjacent rooms, as well as for heating the second floor rooms, is convenient to use a distributor that retains a maximum of heat for distribution between rooms and does not allow the fireplace room to overheat. In addition, the distributor has openings for connecting air flow ducts.

The distributor is made of stainless steel, 0.5mm thick, which will not change its properties with the years of use.

The design of the rear and side walls is such that no impact sounds from the expansion of the metal during the operation of the fireplace.

Modules

The modules can be installed to extract heat from flue gases, increase operating range or expand functionality:

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.