Warmhaus - Viwa S

Viwa S Steel Heat Exchanger Boiler

Viwa S Steel Heat Exchanger Boiler
Size Size
800 x 612 x 495 / 530 / 605 / 680 mm.
Heat Exchanger Heat Exchanger
Stainless Steel DUO Heat Exchanger
Capacity Capacity
Steel heat exchangers with different capacity options up to 90 kW, 100 kW, 125 kW, and 150 kW.
Cascade Installation Cascade Installation
Cascade installation feature for up to 14 devices without the need for an intermediary card.
Control Panel Control Panel
User-Friendly LCD Display Control Panel
Sound Level Sound Level
53-55 dB
Design Design
100% Domestic Design
Efficiency Efficiency
The efficiency that can reach up to 107%*

Our Viwa S devices offer a long-lasting product experience with a steel heat exchanger, along with the ability to cascade without the need for internal valves and an intermediary card, providing you with a cost-effective installation option.

  • Powerful, Efficient, and Long-Lasting Stainless Steel DUO Heat Exchanger
  • Master Control System on All Devices
  • Blue Jet Burner Heat Exchanger Technology Ensuring Perfect Combustion
  • Hermetic and Integrated with Standard Chimneys for Easy Use (Compatible with Type B and C Chimneys)
  • High Efficiency and Long-Lasting with Aging System
  • Suitable for Use in High-Rise Buildings (Up to 6 bar)
  • Easy, Fast, and Cost-Effective Cascade Installation for Up to 14 Boilers with Smart Socket-Plug System
  • 2 Year Warranty
  • Internal Flap System Eliminating the Need for Dampers in Cascade System Chimney Installation
  • Cost-effective chimney connection in attic boiler rooms with Ø100/150 mm chimney kit and accessories
  • Integrated with both hermetic and standard chimneys, easy to use (compatible with Type B and C chimneys)
  • Low Fuel Consumption with Cold Burner Door Technology for High Efficiency
  • * According to the new efficiency system, it corresponds to 98% efficiency.
TECHNICAL DATA VİWA S 90 VİWA S 100 VİWA S 125 VİWA S 150
Gas Line UNIT NATURAL GAS LPG NATURAL GAS LPG NATURAL GAS LPG NATURAL GAS LPG
Gaz Type   G20 G30 G20 G30 G20 G30 G20 G30
Gas Supply Pressure mbar 20 37 20 37 20 37 20 37
Maximum Gas Consumption (NG/LPG) mᶟ/h 8,86 3,32 10,36 4,07 12,54 4,82 14,5 5,55
Minimum Gas Consumption (NG/LPG) mᶟ/h 1,39 0,49 1,73 0,69 2,19 0,87 2,56 0,85
Premix System   Pneumatic
Modulation Range   1:6
Heat Exchanger Material   Stainless Steel Exchanger
Efficiency   G20 G30 G20 G30 G20 G30 G20 G30
(80/60 °C) Efficiency at Maximum Heat Output % 97,8 97,6 98,1 97,6 97,2 97,7 96,1 95,3
(50/30 °C)  Efficiency at Maximum Heat Output % 107,1 107,0 106,0 105,2 107,1 106,2 105,1 104,6
Seasonal Heating Energy Efficiency % Class A
Radiator Circuit   G20 G30 G20 G30 G20 G30 G20 G30
Rated Heat Load (Qn) (Max./Min.) kW 84 / 14 96 / 16 120 / 20 145 / 26
Maximum Heat Power (Pn) (80/60 °C) kW 82,1 82,0 94,2 93,7 116,7 117,2 136,5 135,8
Minimum Heat Power (Pn) (80/60 °C) kW 13,5 13,7 15,6 15,6 19,4 19,5 24,8 24,6
Maximum Heat Power (Pn) (50/30 °C) kW 90,0 89,8 101,8 101,0 128,6 127,5 148,3 146,7
Minimum Heat Power (Pn) (50/30 °C) kW 15,0 15,5 17,0 17,7 21,5 22,1 26,8 26,2
Temperature Setting Range for High Temperature Circuit (Minimum / Maximum) °C 25 - 80
Temperature Setting Range for Low Temperature Circuit (Minimum / Maximum) °C 25 - 47
Operating Pressure (Maximum) bar 6
Operating Pressure (Minimum) bar 0,8
Domestic Hot Water Circuit                  
Temperature Setting Range (min/max) °C 20 - 65
Electric Circuit                  
Power Feed V AC-50 Hz 230 V + %10; -%15
Electricity Consumption (Max./Min.)    Watt 95.45 / 21.95 121.99 / 24.67 158.87 / 21.75 310.4 / 32.95
Protection Index IP IPX5D
    NATURAL GAS LPG NATURAL GAS LPG NATURAL GAS LPG NATURAL GAS LPG
Exhaust Gas Circuit   G20 G30 G20 G30 G20 G30 G20 G30
Exhaust Gas Temperature (Max. / Min.) (80/60 °C) °C 80.3 / 65.5 81.8 / 67.2 76.5 / 66.5 82.6 / 67.9 75.7 / 62.8 82.8 / 68.0 76.7 / 65.5 76.2 / 64.5
Exhaust Gas Temperature (Max. / Min.) °C 63 / 33.6 65.2 / 36.1 62.3 / 35.4 67.2 / 38.4 59.3 / 33.0 67.4 / 38.7 58.5 / 34.5 57 / 33.8
CO (Max. / Min.) (80/60 °C) ppm 146.1 / 10.3 217 / 12.2 134.2 / 9.9 256.0 / 9.11 217.0 / 10.6 258.6 / 11.46 281.0 / 11.51 265.0 /14.2
CO2 (Max. / Min.) (80/60 °C) % 9.1 / 8.6 10.4 / 9.8 9.5 / 9.1 10.6 / 10.2 9.5 / 9.1 10.5 / 10.3 9.75 / 9.33 10.45 / 10.23
NOx Sınıf 6
NOx Weight (GCV) mg/kWh 24.75 / 13.1 23.8 / 11.6 24.4 / 11.7 35.26 / 12.26
Exhaust Gas Mass Flow (60/80°C-Qn) Nominal/Min g/s 38.9 / 6.5 40.2 / 6.8 45.3 / 7.2 48.3 / 7.5 53.2 / 8.2 56.8 / 8.6 53.5 / 11.5 538 / 10.7
General                  
Dimensions (Height x Weight X Depth) mm 800 X 612 X 495 800 X 612 X 530 800 X 612 X 605 800 X 612 X 680
Sound Level dB(A) 53 53 53 55
Net Weight kg 50 60 72 85
Packaged Weight kg 65 75 90 103
Flue Connection Types   B23 , B23P , C13 , C33 , C43 , C53 , C63 , C83 , C93
Category   I2H/I2E/I3P/I2B3P
(G20=20 mbar, G30=37 mbar)
All information given in the brochure has been obtained as a result of the conducted tests. Data are subject to change without prior notice.

Superior Features of Warmhaus

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Longevity with Stainless Heat Exchanger

Provides long-lasting and efficient performance with a specially designed stainless heat exchanger.

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Internal Chimney Damper

Provides a lower investment cost with the built-in chimney damper.

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Control Board in Each Device

Offers simultaneous aging with the ability to master all devices.

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High Safety Valve

Ability to install in tall buildings with a 6-bar safety valve

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Universal Chimney Compatibility

Perfect compatibility with both hermetic and standard chimneys.

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New Technology in the Heat Exchanger

Ensures the most efficient combustion with the Aconit® Burner for Perfect Combustion

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Silent Operation

Along with perfect body insulation, it provides high efficiency at the quietest level.

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