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Protherm Panther 25 KOV 24.6 kW

Photos - Boiler Protherm Panther 25 KOV 24.6 kW
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Double-circuit gas heating boiler with an open combustion chamber, a microprocessor control system with an LCD screen and support for the eBus interface bus. Designed for wall mounting in non-residential (boiler) premises with a mandatory free supply of fresh air. Produced in Slovakia at a facility owned by the Vaillant Group. It is a model of medium power from the Protherm Panther family, whose products belong to the heating equipment of increased comfort. It is intended for the organization of heating of inhabited, office, commercial or household premises. It is positioned as a product of the upper part of the middle price category. A decent level of useful thermal power (24.6 kW) allows the Protherm Panther 25 KOV boiler to serve rooms up to 184 m2. For prompt supply of hot water, the h...ot start function is supported (hot water at the outlet in two seconds). The heat exchanger of the heating circuit is made of copper, the hot water circuit is made of high-alloy stainless steel, the main elements of the hydraulic system are made of high-strength and durable composite. The boiler is equipped with a high-tech modulating burner, the power of which automatically changes depending on the need. Thanks to the eBus connection, it can interface with a wide range of Vaillant thermostats.
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Protherm Panther 25 KOV 24.6 kW
24.6 kW
28.8 kW
Energy source:gas
Mount:wall, dual-circuit
Boiler power:24.6 kW, area ~ 184 m²
Combustion chamber:open, flue 125 mm
DHW temperature:from 38 °С, up to 60 °С

Double-circuit gas heating boiler with an open combustion chamber, a microprocessor control system with an LCD screen and support for the eBus interface bus. Designed for wall mounting in non-residential (boiler) premises with a mandatory free supply of fresh air. Produced in Slovakia at a facility owned by the Vaillant Group. It is a model of medium power from the Protherm Panther family, whose products belong to the heating equipment of increased comfort.

It is intended for the organization of heating of inhabited, office, commercial or household premises. It is positioned as a product of the upper part of the middle price category. A decent level of useful thermal power (24.6 kW) allows the Protherm Panther 25 KOV boiler to serve rooms up to 184 m2. For prompt supply of hot water, the hot start function is supported (hot water at the outlet in two seconds).

The heat exchanger of the heating circuit is made of copper, the hot water circuit is made of high-alloy stainless steel, the main elements of the hydraulic system are made of high-strength and durable composite. The boiler is equipped with a high-tech modulating burner, the power of which automatically changes depending on the need. Thanks to the eBus connection, it can interface with a wide range of Vaillant thermostats.

All specifications
Specifications Panther 25 KOV
Main
Energy sourcegas
Installationwall
Typedual-circuit (heating and DHW)
Heating area184 m²
Technical specs
Heat output24.6 kW
Min. heat output9.5 kW
Power supply230 В
Power consumption92 W
Rated current0.4 А
Coolant min. T38 °С
Coolant max. T80 °С
Heating circuit max. pressure3 bar
DHW circuit max. pressure10 bar
Consumer specs
DHW min. T38 °С
DHW max. T60 °С
Performance (ΔT ~30 °C)12 L/min
Warm start
Circulation pump
Boiler specs
Efficiency91.8 %
Combustion chamberopen (atmospheric)
Flue diameter125 mm
Inlet gas pressure20 mbar
Max. gas consumption2.84 m³/h
Expansion vessel capacity7 L
Expansion vessel pressure3 bar
Connections
Mains water intake3/4"
DHW flow3/4"
Gas supply3/4"
Central heating flow3/4"
Central heating return3/4"
Safety
Safety systemsgas pressure drop
water overheating
flame loss
draft control
power outage
frost protection
More specs
Dimensions (HxWxD)742x410x311 mm
Weight35 kg
Added to E-CatalogNovember 2010
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Protherm 2026 - new arrivals, bestsellers, and the most relevant models Protherm.
This is how to make boilers
31 January 2019 
I have a four-room apartment with autonomous heating; the developer supplied an ultra-budget pseudo-German boiler; they are actually assembled in China. If the Chinese managed to cope with the heating at the very least, and also heated water for the kitchen and one of the bathrooms, then with the second shower everything was very sad, the water from the tap was lukewarm. As a result, I installed a more powerful Protherm Panther boiler, assembled in Slovakia. Compared to the Chinese, only enthusiastic impressions: the radiators are hot, after renovation in the kitchen I also connected a heated floor to the boiler, hot water is in all the bathrooms and it heats up quickly, you don’t have to wait half a minute for it to heat up, as was the case with the Chinese, the water flows literally 5-7 seconds after turning on the boiler. I noted the advantage of electronic control, the Panther is controlled by buttons, very convenient. I also installed a thermostat, now the boiler maintains the set temperature in the apartment, and does not just heat the radiators. I don’t understand why some developers install bad and cheap boilers, because people still have to replace them at their own expense...
powerful, heats water quickly
so far nothing to complain about
use Protherm Panther 25 KOV few months
One of the best wall mounts on the market, the optimal combination of price and functionality
4 April 2019 
I'll share my opinion about the Panther 25 KOV wall-mounted boiler. It's been in use for a little over 2 years, I bought it in the fall of 2016 from an official dealer. I got the boiler for heating a private house made of aerated concrete with an area of 220 meters, and with the help of the Panther, I was able to completely solve the heating and hot water issue. I specifically wanted a compact dual-circuit boiler so as not to spoil the bathroom renovation by installing an additional boiler (there was no other place to put it). The Panther operates almost silently, and if you get used to it a bit, it's not noticeable at all, quieter than a refrigerator. I liked the convenience of adjustments and settings, just a couple of buttons, easy to master. I also appreciated the display with bright backlighting, all necessary information is easy to read. I additionally installed a temperature sensor, so now the boiler maintains the set temperature in the rooms. Besides saving money, it's pure convenience, if the weather changes outside (for example, gets colder), there's no need to immediately tweak the settings, the boiler does everything automatically. Everything is also good with hot water. Some people say they don't have enough water and suggest getting a boiler, but that's nonsense, the Panther provides more than enough water. In my opinion, this is one of the best wall-mounted boilers on the market, offering the optimal combination of price and functionality.
dual-circuit, economical
no
use Protherm Panther 25 KOV month or more i recommend it should buy
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