Viwa 50-65 Premix & Gas Adaptive System
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- Gas Adaptive System
- Stainless Steel Exchanger
- Cascade up to 6 boilers & 390 kW Power
- Compact Dimensions & Less Installation Area (W:425 x D:385 x H:725 mm)
- High Productivity in all Season with 1:8 Modulation Ratio
- Multi-zone managemen
- User Friendly Control Panel
- Built-in Air & Dirt Separator
- Coordination with Different Cascade Control Panel
- Perfect Body Insulation
- Hermetic Flue Connection
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9 REASONS TO CHOOSE

Gas Adaptive System
Viwa 50 and Viwa 65 boilers have gas adaptive system features that provide continuous high efficiency by adjusting the ideal air and gas ratio.

High Productivity in all Season with 1:8 Modulation Ratio
It ensures high productivity every time both in mid-season and at while minimum power is needed with cutting ability its maximum power 1:8 ratio.

Compact Dimensions & Less Installation Area (W:425 x D:385 x H:725 mm)
Compact dimensions and adjacent installation capability allows installation with less area.

Stainless Steel Exchanger
High efficient coil type exchanger provides long product life and decreases clogging risk to minimum with its watertight and wide hydraulic channels.

Cascade up to 6 boilers & 390 kW Power
Central heating capacity up to 390 kW with 6 boilers can be obtained easily with cascade installation.

Coordination with Different Cascade Control Panel
Thanks to OpenTherm communication protocol it can contact with any cascade control unit sold in the market.

Multi-zone management
With an external optional module, 4 heating zone or 1 heating zone plus 1 underfloor zone can be controlled.

User Friendly Control Panel
Illuminated wide information screen shows heater, hot usage water, installation pressure, Outside Sensor connection and room thermostat connection and flame modulation in the screen at the same time.

Built-in Air & Dirt Separator
Built-in mini Air & Dirt Separator on the exhaust manifold prevent air and particle in the system from damaging the exchanger.

Hermetic Flue Connection
Warmhaus Viwa boilers have room sealed hermetic boiler design and compatible with Ø80/125 mm concentric flue connection. Each boiler can be used with its own flue sets independent from each other which makes cascade systems easy to install in roof spaces without a stainless steel flue.

Perfect Body Insulation
High Usage Productivity is ensured by 10 mm thickened insulation which prevents heat loss from boiler body and decreases sound level.