Hot water boiler WTC-GB series

gasnatural gascondensing

Overview
The Weishaupt Thermo Condens® WTC-GB gas condensing boiler is available in three outputs and delivers efficient heating for apartments, single-family homes and small multi-family buildings. User-friendly control via the boiler interface, PC, tablet or mobile app.

Energy savings
The high-performance heat exchanger, made of aluminium-silicon, ensures highly efficient heat transfer to the heating water (stated efficiency: 110.1% based on LHV (PCI) / 99.2% based on HHV (PCS)). The manufacturing process coating provides protection against corrosion and fouling.

Optimised combustion
The boiler is fitted as standard with the self-calibrating SCOT system, which automatically adapts to varying gas qualities (composition changes, biogas, environmental and temperature influences). It is designed to accept up to 20% hydrogen by volume in mixture with natural gas, maintaining optimal fuel utilisation in terms of efficiency, economy and safety.

Reduced electrical consumption
Integration of high-performance circulators and a 20% reduction in exchanger water-side pressure drop significantly lower electrical consumption.

Gas types
Optimised for various gas types: Natural gas E/H, Natural gas LL, Liquefied gases B/P; the boiler automatically recognises gas composition and optimises the air/gas ratio.

Product benefits

• Modulating output according to system demand, with very low burner modulation to maintain operation and improve efficiency.
• Quiet operation due to fan speed modulation.
• Intuitive control via integrated interface, room controller, mobile app or internet.
• Remote access and adjustment possible via the Weishaupt WEM portal.

Installation and solutions

• Available as a compact floor-standing version with integrated domestic hot water heater (WTC-GB B version K).
• Wide range of accessories for DHW production, flue gas routing, hydraulic accessories, controls and solar sensors for DHW and heating boost.
• Solutions designed and sized to ensure proper equipment matching.

Controls and operation

• Intuitive control: "Turn – Press" principle for simplified data display and settings.
• Remote operation: controllable via the WEM portal and by smartphone app or internet.
• Home management: optional room controller providing a simple, designer control solution; regulation can be carried out from the dwelling.

Technical specifications / Characteristics

• Model table (columns: Model | Burner power min Qc | Burner power max Qc | Fuels | Efficiency Eta30 (PCI) | Efficiency Eta100 (PCI) | Heating efficiency class | Heating label scale | Width | Depth | Height | Weight)
  WTC-GB 15-B H | 2.0 kW | 14.0 kW | Natural gas E/H, Natural gas LL, Liquefied gases B/P | 110.4 % | 98.2 % | A | A+++ - D | 680.0 mm | 420.0 mm | 1010.0 mm | 71.0 kg
  WTC-GB 25-B H | 3.0 kW | 24.0 kW | Natural gas E/H, Natural gas LL, Liquefied gases B/P | 110.3 % | 98.5 % | A | A+++ - D | 680.0 mm | 420.0 mm | 1010.0 mm | 76.0 kg
  WTC-GB 32-B H | 4.0 kW | 30.5 kW | Natural gas E/H, Natural gas LL, Liquefied gases B/P | 109.6 % | 98.3 % | A | A+++ - D | 680.0 mm | 420.0 mm | 1010.0 mm | 78.0 kg