PROTHERM Panther Condens 25 KKO-CS/1 single-function condensing gas boiler, 0010025160

PROTHERM Panther Condens 25 KKO-CS/1, 0010025160 is a high-efficiency wall-mounted single-function condensing gas boiler designed for central heating and operation with an external indirect domestic hot-water cylinder.

Panther Condens uses adaptive FlameFit / Sitherm Pro combustion-control technology, continuously adjusting the gas-to-air ratio to actual gas quality. Its wide modulation range allows output to follow the building's actual heat demand.

With G20 natural gas, useful heating output is 2.7–26.9 kW at 50/30 °C and 2.4–24.7 kW at 80/60 °C. The low minimum output is particularly useful during mild weather and in energy-efficient buildings.

The KKO version does not provide instantaneous DHW. An external indirect DHW cylinder can be connected, with boiler output reaching up to 28.0 kW during cylinder charging.

The main condensing heat exchanger is made of stainless steel. The boiler includes a high-efficiency circulation pump, water-pressure sensor and integrated 8-litre expansion vessel.

Heating flow temperature can be adjusted from 15 to 80 °C, with a maximum permitted flow temperature of 85 °C. Maximum heating-system operating pressure is 3 bar.

Nominal heating-water flow at ΔT 20 K is 1064 l/h, with approximately 0.36 bar available pump head at nominal flow.

The illuminated control interface supports eBUS and LIN-bus communication for compatible Protherm/Vaillant Group controls, weather-compensated control and suitable remote-control solutions.

The boiler has an A space-heating energy class, NOx Class 6 and indoor sound power level of 51 dB(A).

Electrical supply is 230 V / 50 Hz. Maximum electrical input is 93 W in heating mode, up to 100 W during DHW-cylinder operation and 2 W in standby.

The boiler measures 740 × 418 × 344 mm and has a net weight of 29.8 kg.

Key advantages

• Single-function condensing boiler.
• Product code 0010025160.
• 2.7–26.9 kW at 50/30 °C.
• 2.4–24.7 kW at 80/60 °C.
• Up to 28.0 kW for external DHW-cylinder charging.
• FlameFit / Sitherm Pro adaptive combustion control.
• Stainless-steel condensing heat exchanger.
• High-efficiency circulation pump.
• Integrated 8 l expansion vessel.
• External DHW-cylinder compatibility.
• eBUS and LIN-bus communication.
• Energy class A.
• NOx Class 6.
• 51 dB(A) sound power.

Technical information