Fully Wired Circular Duct Heater – 300Ø – 3kW – 1 Phase – 1 Stage

Product Code: AC300-3000FW

The AC300-3000FW Fully Wired Circular Duct Heater is a 300mm diameter, 3kW electric duct heater manufactured by Airflow Engineering (SI) Ltd.

Designed for installation within circular duct systems, the heater is supplied fully wired and ready for connection, with the required isolator, fuses, contactor and controls incorporated into the heater assembly.

Airflow circular duct heaters use robust finned electric resistance elements mounted within a galvanised steel casing to provide controlled supplementary heating within HVAC and ventilation systems.

Fully Wired Heater Assembly

This model is supplied as a complete 1-stage heater assembly incorporating:

• Isolator

• Fuses

• Contactor

• High-temperature safety cut-out

• Differential air pressure switch

• Digital temperature controller

The differential air pressure switch monitors the pressure difference across the heater to confirm airflow and allows the heater to be mounted horizontally or vertically where suitable.

Specifications

Specification	Details
Product Code	AC300-3000FW
Duct Diameter	300mm
Voltage	230V
Phase	1 Phase
Input Power	3000W
Input Current	13A
Minimum Air Velocity	3 m/s
Heating Stages	1
Heater Type	Fully Wired Circular Duct Heater

Equipment

Component	Specification
Heating Element	F886W3000 – 3000W Finned Element
Number of Elements	1
Manual Over-Temperature Control	LM7 – Fixed Setting 120°C
Differential Air Pressure Switch	Belimo Differential Pressure Switch
Air Pressure Termination Kit	Air Pressure Differential Fixing Kit
Digital Temperature Controller	Full Gauge MT-512E 2HP
Fire-Retardant Duct Lining	Thermobreak Fire-Retardant Foam
Tube & Terminal Box Construction	24 Gauge Galvanised Steel

Dimensions

Dimension	Size
Diameter – A	300mm
Overall Length – B	1000mm
Terminal Box Height – C	200mm
Element Length – D	275mm
Terminal Box Length – E	600mm

Why Choose an Airflow Duct Heater?

Airflow duct heaters are a premium heater and are priced accordingly, reflecting the components, controls and safety features incorporated into each unit.

We use robust finned heating elements, together with a differential air pressure switch that monitors airflow and allows the heater to be mounted horizontally or vertically where suitable.

Our fully wired heaters incorporate over-temperature protection, a differential air pressure switch and a digital thermostat, all built into a complete heater assembly manufactured by Airflow in Christchurch.

For us, the priority is a robust, well-controlled duct heater with the appropriate safety features built in.

Important Information

The minimum specified airflow must be maintained whenever the heater is operating.

Electrical connection, installation and commissioning must be completed by suitably qualified tradespeople and in accordance with the heater documentation and applicable New Zealand requirements.

Manufactured by Airflow

This duct heater is manufactured and wired by Airflow Engineering (SI) Ltd in Christchurch, New Zealand, combining the heater casing, finned element, controls and electrical components into a complete ready-to-connect assembly.