Introduction
The document provides detailed information about the SIRIO and TERNA series of wood-fired and combined boilers, highlighting their features, specifications, and operational guidelines.

SIRIO Boiler Features
The SIRIO boiler is designed for domestic heating using solid fuels like wood and coal. It is noted for its robust structure, compact size, and high reliability. Key features include a large combustion chamber, a self-cleaning dry-finned heat exchanger, and a patented air flow regulation system for optimal combustion efficiency. The boiler is thermally insulated with fiberglass and has an easy-to-assemble outer casing.

Electrical Panel
The SIRIO boiler comes with a sophisticated electric panel ensuring safe operation. It includes switches for the main power, fan, and pump, along with various thermostats for regulation and safety, such as an anti-condensation thermostat and a bypass thermostat for thermal safety.

TERNA S and TERNA B Models
The TERNA S model features a double firebox, allowing for the use of both solid fuels and a gas or diesel oil burner for continuous heating. The TERNA B model adds a boiler tube for domestic hot water production, integrating heating and hot water needs in one system. Both models have separate smoke outlets that must be connected to different chimneys.

Operational Guidelines
It is crucial to note that the solid fuel and gas-diesel oil sections cannot operate simultaneously. The electric panels for TERNA models include additional features for managing the transition between fuel types and ensuring continuous heating.

Technical Specifications
The document provides detailed technical data, including dimensions, power ratings, and operational pressures for various models. The SIRIO and TERNA boilers operate at a pressure of 3 bar, with a test pressure of 4.5 bar. The tables also list calorific values for different fuels and the corresponding power outputs.

Conclusion
The SIRIO and TERNA series boilers offer versatile and efficient solutions for domestic heating, with options for integrating hot water production. Their design emphasizes reliability, ease of use, and safety, making them suitable for various residential applications.