Nabertherm Exhaust Air Extraction Systems & Installation Guidelines

Safe and adequate **Exhaust Air Extraction** is mandatory whenever exhaust gases are generated during a “Made in Germany” Nabertherm furnace process. This page outlines the professional methods for guiding these gases outside to ensure a safe laboratory environment.

There are several proven methods to manage exhaust gases. For instance, the furnace is often positioned directly under a customer-provided laboratory extraction hood. In these scenarios, we recommend using a Nabertherm **exhaust vent** to guide the gases upwards into the hood. Furthermore, proper installation involves specific pipe dimensions and slopes to ensure natural draft or active extraction works correctly without compromising the furnace’s temperature uniformity.

Installation Guidelines:

• Safety First: Always follow the relevant operating instructions and consult a local ventilation technician to layout the system for your specific building.
• Piping Material: Metal exhaust gas pipes with diameters of **NW 80** to **NW 120** are recommended.
• Installation Angle: Pipes should be installed with a continuous upward slope to assist natural draft.
• Mounting: Pipes must be securely fastened to the wall or ceiling; do not rest the weight of the piping on the furnace itself.
• Alignment: Center the pipe directly over the furnace vent.
• Bypass Airflow: Avoid a tight fit between the exhaust pipe and the furnace vent. A small gap maintains a “bypass” airflow, ensuring that the chimney effect does not draw too much fresh air into the furnace, which could affect temperature uniformity.

To implement these extraction guidelines, Nabertherm offers specific hardware accessories designed to fit your furnace perfectly.

Compatible Hardware:

• Exhaust Vent: A stainless steel directional tube to guide gases upwards towards a hood.
• Chimney with Fan: For active extraction when a passive draft is not enough. (Requires NW 120 piping).
• Catalytic Converter: For cleaning organic fumes before they enter the extraction system. (Requires NW 120 piping).

Related Products:

View the specific hardware components on our Chimneys & Exhaust Systems page.

Proper piping sizing is critical for safety and furnace performance. Use this table to determine the required pipe diameter based on your equipment configuration.

Recommended Piping Specifications

Note: Always maintain a bypass gap (do not seal tightly) to prevent excessive fresh air intake.