Palazzetti Ecofire Theo TC 9 US: 9 kW sealed pellet stove with top coaxial outlet

Palazzetti Ecofire Theo TC 9 US is a 9 kW sealed pellet stove featuring soft rounded styling, a cast-iron top and an integrated top coaxial flue and combustion-air connection.

The US – Upper Smoke configuration moves the chimney connection to the top of the appliance, reducing rear installation space and providing greater installation flexibility.

The T3 platform combines advanced combustion, automatic burn-pot cleaning and simplified maintenance technologies.

Why choose Palazzetti Theo TC 9 US

• 9 kW nominal heat output.
• Modulation down to approximately 2.5 kW.
• CC50 sealed combustion.
• Ø80/130 mm top coaxial connection.
• Compact dimensions: 52 × 54 × 110 cm.
• Rounded painted-steel cladding.
• Cast-iron top.
• Double-glazed door.
• Balanced Door.
• Zero Speed Fan / Silent.
• Digital touch control panel.
• Daily and weekly programming.
• Optional Universal Gateway.
• T3 technology.
• Complete Burning System.
• Self Cleaning System.
• Speedy Clean.
• Quick Start.
• Star Valve pellet-feed system.
• Optional Pro2 Ø80 mm hot-air ducting.
• 16 kg pellet hopper.
• Maximum indicative burn time up to approximately 28 hours.
• A+ energy class.
• Italian 5-star environmental rating.

US – Upper Smoke: top coaxial connection

The US – Upper Smoke configuration provides a top connection for the chimney system.

The coaxial arrangement combines flue-gas evacuation and combustion-air intake within the same installation system.

The connection uses an Ø80/130 mm configuration, with the internal Ø80 mm duct used for flue gases and the outer section used for combustion air.

CC50 sealed combustion: what does it mean?

Theo TC 9 US is a CC50 certified sealed pellet stove.

CC50 means that combustion-chamber airtightness is verified at a pressure difference of up to 50 Pa according to EN 16510.

Combustion air can therefore be supplied directly from outdoors rather than being taken from the installation room.

This is particularly relevant in modern well-insulated buildings, low-energy homes and properties with controlled mechanical ventilation. Installation compatibility must always be assessed by a qualified installer.

Zero Speed Fan

The variable-speed room-air fan features Zero Speed Fan.

At low and medium output levels, when operating conditions allow, forced ventilation can be completely switched off. Heat is then distributed mainly through natural convection and radiation for quieter operation.

T3 technology

Theo TC 9 US uses Palazzetti's T3 technology, based on four enlarged flue-gas tubes designed for efficient heat exchange and simplified cleaning.

Self Cleaning System

The Self Cleaning System automatically cleans the pellet burn pot by periodically discharging combustion residues.

Complete Burning System

The Complete Burning System promotes more complete pellet combustion and helps minimise residual ash production.

Speedy Clean

The latest-generation Speedy Clean system provides front access to the flue-gas circuit, simplifying routine maintenance.

Quick Start

Quick Start is designed to reduce pellet ignition time and allow the stove to reach operating conditions more quickly.

Optional Pro2 hot-air ducting

Theo TC 9 US can be equipped with the optional Pro2 ducting kit, allowing warm air to be distributed to another room through an Ø80 mm duct.

Performance, consumption and burn time

Theo TC 9 US delivers 9 kW nominal heat output and can modulate down to approximately 2.5 kW.

Efficiency is approximately 88.1% at nominal output and approximately 91% at partial load.

Pellet consumption ranges from approximately 0.57 to 2.11 kg/h. The hopper has a capacity of 16 kg, providing a maximum indicative burn time of up to approximately 28 hours.

Palazzetti Ecofire Theo TC 9 US technical specifications

Installation and chimney system

Theo TC 9 US is designed for an Ø80/130 mm top coaxial connection, combining flue-gas evacuation and combustion-air intake.

Palazzetti specifies a chimney draught of 12 Pa ±2 Pa.

The chimney system, coaxial adapters and any hot-air ducting must be correctly designed and installed by qualified personnel in accordance with current regulations and Palazzetti's technical instructions.