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EBM PAPST Tangential fan QL3/3000A2-2118LH-455ca 55443.12000

SKU 55443.12000 Model QL3/3000A2-2118LH-455ca Brand EBM PAPST

Photos

Key specifications

Length	302 mm
Width	50 mm
Air flow	80 m3/h
Current consumption	0.04 A
Rotation speed	2580 rpm
Application type	combustion air supply
Control Mode	Mains, PWM, or 0-10 V
Housing type	tangential fan
Electrical connection	Electrical communication with control board

all specifications (9) ↓

159.72 EUR

145.20EUR

in stock · 1

incl. 21% VAT · 120.00 EUR excl. VAT · shipping calculated at checkout

Worldwide shipping from stock
Original manufacturer part
Dispatch within 24 h for stocked items

Description

This is a tangential fan from EBM PAPST for combustion air supply. It has a housing size of 302 mm by 50 mm, delivers an air flow of 80 m³/h, and consumes 0.04 A at a rotation speed of 2580 rpm. The fan is controlled by mains, PWM, or a 0-10 V signal and communicates electrically with the control board.

Further details

Air pressure verification	Air pressure switch verifies sufficient airflow before ignition
Primary application in burner systems	Pre-purge phase air clearing, combustion control, flue gas exhaust
Speed modulation for air-fuel ratio	Speed directly sets firing rate; burner control varies speed

Choosing and fitting

When replacing a fan of this type, verify the direction of rotation, outlet orientation, impeller diameter, voltage rating, control mode, and flange pattern to ensure physical and functional fit. The fan speed directly sets the firing rate in modulating systems, so the replacement must match the required air flow and pressure of the burner. Ensure the control mode (mains, PWM, or 0-10 V) is compatible with the burner control.

Signs of failure

Typical failure modes of such fans include worn bearings causing noise or vibration, imbalance from deposits on the impeller, a defective capacitor on single-phase models, and speed feedback errors that the boiler reports as an airflow fault. If the fan fails, the burner may not start or may shut down during operation. Check the impeller for deposits, listen for unusual noise, and verify the capacitor and speed feedback signal.

All specifications

Length	302 mm
Width	50 mm
Air flow	80 m3/h
Current consumption	0.04 A
Rotation speed	2580 rpm
Application type	combustion air supply
Control Mode	Mains, PWM, or 0-10 V
Housing type	tangential fan
Electrical connection	Electrical communication with control board

Part numbers

SKU	55443.12000
Additional article	377.145.074
Model	QL3/3000A2-2118LH-455ca