ICMA 90147AE06 Draught Regulator 3/4 inch with 1200 mm Chain

The ICMA 90147AE06 draught regulator is a precision mechanical device engineered to manage the combustion air intake in solid fuel boilers. By monitoring the boiler water temperature, this regulator automatically adjusts the air damper position via a durable 1200 mm chain, ensuring the system maintains a consistent temperature setpoint. This process optimizes the combustion cycle, leading to more efficient fuel usage and enhanced operational stability for your heating system.

Advantages

This draught regulator offers a reliable, non-electric solution for boiler temperature control, which increases the overall safety and longevity of the heating equipment. Its robust construction ensures consistent performance under varying thermal loads, while the standard 3/4 inch connection allows for straightforward integration into most common solid fuel boiler configurations. By automating the air supply, it helps prevent overheating and reduces the frequency of manual adjustments required by the operator.

Suitable for

• Solid fuel boilers requiring automatic temperature regulation
• Wood-fired and coal-fired heating systems
• Upgrading existing boiler installations for better efficiency
• Maintaining stable water temperatures in central heating circuits

This device is not suitable for gas or oil-fired boilers, as these systems require electronic modulation and specific safety interlocks that a mechanical regulator cannot provide. It is also not intended for use in pressurized steam systems or applications where precise digital temperature control is mandatory.

Key specifications

• Connection size: 3/4 inch
• Chain length: 1200 mm
• Operation type: Mechanical thermal expansion
• Compatibility: Solid fuel boilers

Installation involves threading the regulator into the designated port on the boiler body. Once secured, the chain is attached to the air intake damper. The regulator is then calibrated by setting the desired temperature on the dial, which allows the internal thermal element to expand or contract, thereby opening or closing the damper to regulate airflow based on the water temperature.

What to consider before purchase

• Verify that your boiler has a compatible 3/4 inch threaded port
• Ensure there is sufficient clearance for the 1200 mm chain movement
• Check the boiler manufacturer's guidelines for draught regulator compatibility

For optimal performance, ensure the chain is adjusted so that the damper is fully closed when the boiler reaches the target temperature. Regularly inspect the chain for any signs of wear or obstruction to maintain smooth operation throughout the heating season.