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Comparison Protherm Puma Condens 18/24 MKV-AS/1 20 kW vs Protherm Panther 25 KTV 24.6 kW

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Protherm Puma Condens 18/24 MKV-AS/1 20 kW
Protherm Panther 25 KTV 24.6 kW
Protherm Puma Condens 18/24 MKV-AS/1 20 kWProtherm Panther 25 KTV 24.6 kW
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from $626.37 up to $696.08
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Main
The circulation pump with frequency regulation of speed. Touch control. Availability of eBus communication bus. The recommended operating pressure of the heating system is 1.5 bar.
Undemanding to water hardness and gas quality. Comfort function. Informative LCD display.
Energy sourcegasgas
Installationwallwall
Typedual-circuit (heating and DHW)dual-circuit (heating and DHW)
Heating area160 m²184 m²
Condensing
Technical specs
Heat output20 kW24.6 kW
Min. heat output6.6 kW8.4 kW
Power supply230 V230 V
Power consumption90 W147 W
Rated current0.4 А
Coolant min. T30 °С38 °С
Coolant max. T75 °С80 °С
Heating circuit max. pressure3 bar3 bar
DHW circuit max. pressure10 bar10 bar
Consumer specs
DHW min. T35 °С38 °С
DHW max. T55 °С60 °С
Performance (ΔT ~30 °C)11.5 L/min12 L/min
"Summer" mode
Warm start
Circulation pump
Control buseBus
Boiler specs
Efficiency107.8 %92.8 %
Combustion chamberclosed (turbocharged)closed (turbocharged)
Flue diameter
60/100 mm /80/80 for split flue/
Inlet gas pressure20 mbar20 mbar
Max. gas consumption2.54 m³/h2.8 m³/h
Expansion vessel capacity8 L7 L
Expansion vessel pressure3 bar
Coolant performance788 L/h
Heat exchangeraluminiumcopper
Connections
Mains water intake1/2"3/4"
DHW flow1/2"3/4"
Gas supply1/2"3/4"
Central heating flow3/4"3/4"
Central heating return3/4"3/4"
Safety
Safety systems
 
water overheating
flame loss
draft control
 
water circulation failure
frost protection
gas pressure drop
water overheating
flame loss
draft control
power outage
 
frost protection
More specs
Dimensions (HxWxD)626x400x270 mm740x410x311 mm
Weight25.6 kg37 kg
Added to E-Catalogseptember 2020november 2010

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.

Condensing

Boilers generate additional heat by condensing water vapour from combustion products. In such units, the combustion gases, before entering the flue, are passed through an additional heat exchanger, in which they are cooled, and the water vapour condenses and transfers thermal energy to the coolant. It allows you to increase the efficiency by 10 – 15% compared to boilers of the classical design — up to the fact that in many similar models, the efficiency exceeds 100% (for more details, see "Efficiency").

The condensation principle of operation is most often found in gas models (see "Power source"); however, solid and liquid fuel boilers with this feature are also produced.

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).

Min. heat output

The minimum heat output at which the heating boiler can operate in constant mode. Operation at minimum power allows you to reduce the number of on-and-off cycles that adversely affect the durability of heating boilers.

Power consumption

The maximum electrical power consumed by the boiler during operation. For non-electric models (see Energy source), this power is usually low, as it is required mainly for control circuits and it can be ignored. Regarding electric boilers, it is worth noting that the power consumption in them is most often somewhat higher than the useful one since part of the energy is inevitably dissipated and not used for heating. Accordingly, the ratio of useful and consumed power can be used to evaluate the efficiency of such a boiler.

Rated current

The current consumed by the electric boiler (see "Power source") during normal operation.

This parameter directly depends on the power. It is required primarily for organizing the connection: wiring and automation must safely deal with the current consumed by the unit.

Coolant min. T

The minimum operating temperature of the heat medium in the boiler system when operating in heating mode.

Coolant max. T

The maximum operating temperature of the heat medium in the boiler system when operating in heating mode.

DHW min. T

The minimum temperature of domestic hot water (DHW) supplied by a dual-circuit boiler. For comparison, we note that water begins to be perceived as warm, starting from 40 °C, and in centralized hot water supply systems, the temperature of hot water is usually about 60 °C (and should not exceed 75 °C). At the same time, in some boilers, the minimum heating temperature can be only 10 °C or even 5 °C. A similar mode of operation is used to protect pipes from freezing during the cold season: the circulation of water with a positive temperature prevents the formation of ice inside and damage to the circuits.

It is also worth keeping in mind that when heated to a given temperature, the temperature difference ("ΔT") may be different — depending on the initial temperature of the cold water. And the performance of the boiler in the DHW mode directly depends on ΔT; see below for performance details.
Protherm Puma Condens 18/24 MKV-AS/1 often compared
Protherm Panther 25 KTV often compared