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Comparison Eurotherm KT 8 TSY 7.4 kW vs Eurotherm KT 8 TS 8 kW

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Eurotherm KT 8 TSY 7.4 kW
Eurotherm KT 8 TS 8 kW
Eurotherm KT 8 TSY 7.4 kWEurotherm KT 8 TS 8 kW
Outdated ProductOutdated Product
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Energy sourcegasgas
Installationfloorfloor
Typesingle-circuit (heating only)single-circuit (heating only)
Heating area59 m²64 m²
Technical specs
Heat output7.4 kW8 kW
Power supplyautonomous (no electricity)autonomous (no electricity)
Coolant min. T50 °С50 °С
Coolant max. T90 °С90 °С
Heating circuit max. pressure2 bar2 bar
Consumer specs
Circulation pump
Boiler specs
Efficiency92 %92 %
Combustion chamberclosed (turbocharged)open (atmospheric)
Flue diameter120 mm
Inlet gas pressure13 mbar13 mbar
Max. gas consumption0.84 m³/h0.91 m³/h
Connections
Gas supply1/2"1/2"
Central heating flow1 1/2"1 1/2"
Central heating return1 1/2"1 1/2"
Safety
Safety systems
gas pressure drop
water overheating
flame loss
draft control
gas pressure drop
water overheating
flame loss
draft control
More specs
Dimensions (HxWxD)665x450x315 mm668x252x410 mm
Weight46 kg35 kg
Added to E-Catalogmarch 2019march 2019

Heating area

A very conditional parameter that slightly characterizes the purpose based on the size of the room. And depending on the height of the ceilings, layout, building design and equipment, actual values may differ significantly. However, this item represents the maximum recommended area of the room that the boiler can effectively heat. However, it is worth considering that different buildings have different thermal insulation properties and modern buildings are much “warmer” than 30-year-old and especially 50-year-old houses. Accordingly, this item is more of a reference nature and does not allow us to fully assess the actual heated area. There is a formula by which you can derive the maximum heating area, knowing the useful power of the boiler and the climatic conditions in which it will be used; For more information on this, see "Useful Power". In our case, the heating area is calculated using the formula “boiler power multiplied by 8”, which is approximately equivalent to use in houses that are several decades old.

Heat output

It is the maximum useful power of the boiler.

The ability of the device to heat a room of a particular area directly depends on this parameter; by power, you can approximately determine the heating area, if this parameter is not indicated in the specs. The most general rule says that for a dwelling with a ceiling height of 2.5 – 3 m, at least 100 W of heat power is needed to heat 1 m2 of area. There are also more detailed calculation methods that take into account specific factors: the climatic zone, heat gain from the outside, design features of the heating system, etc.; they are described in detail in special sources. Also note that in dual-circuit boilers (see "Type"), part of the heat generated is used to heat water for the hot water supply; this must be taken into account when evaluating the output power.

It is believed that boilers with a power of more than 30 kW must be installed in separate rooms (boiler rooms).

Combustion chamber

The type of combustion chamber provided in the boiler.

Open(atmospheric). Combustion chambers of this type consume air from the room in which the boiler is installed, and the combustion products are naturally removed through the flue. Boilers of this design are simple and inexpensive but have specific installation requirements: the room must be well-ventilated, and the height of the chimney must be at least 4 m to ensure sufficient draft.

Closed(turbocharged). Closed combustion chambers are isolated from the room in which the boiler is installed: combustion air is taken from the street, and combustion products are removed there. For this, a coaxial flue is usually used — in the form of two pipes nested one inside the other: combustion products are removed through the inner one, and the outer one is responsible for the air supply. Turbocharged combustion chambers are more complicated and expensive than open ones, and the maximum length of the chimney is limited. On the other hand, such a boiler does not burn the air in the room, and it can be installed anywhere, regardless of the ventilation efficiency.

— Is absent. Boilers powered by electricity do not have combustion chambers (see "Source of Energy").

Flue diameter

The diameter of the pipe through which combustion products are discharged from the combustion chamber.

In boilers with a closed combustion chamber often used the coaxial flue, consisting of two pipes nested one inside the other. At the same time, products of combustion are discharged from the combustion chamber through the inner pipe, and the air is supplied through the gap between the inner and outer ones. For such flues, the diameter is usually shown in the form of two numbers — the diameter of the inner and outer pipes, respectively. The most popular values are 60/100, 80/80 and 80/125. Non-coaxial flues can be 100, 110, 125, 130, 140, 150, 160, 180 and 200 mm.

Max. gas consumption

Maximum gas consumption in the boiler with the corresponding energy source (see above). Achieved when the gas heater is operating at full capacity; with reduced power and consumption, respectively, will be lower.

Note that boilers of the same power may differ in gas consumption due to the difference in efficiency. While the more fuel-efficient models tend to cost more, the price difference pays off in gas savings.