Good points

Brand: Zehnder
Energy efficient
Very quiet
Fixed speed

Zehnder Roof Fan ComfoRoof MX Solo 320

The Zehnder roof fan ComfoRoof MX Solo 320 is a robust and energy-efficient roof fan specifically designed for commercial buildings, schools, and more advanced residential construction. This base model provides an efficient and reliable solution for projects with multiple ventilation requirements and the need for central control.

The Zehnder roof fan ComfoRoof MX Solo 320 is the base version, suitable for a flow rate of up to 4100 m³/h and has a single-phase 230V connection. There is also a variant with a three-phase 400V/50Hz connection. A built-in potentiometer is an adjustable resistor that regulates the speed of the fan, allowing the airflow to be easily adjusted to the desired value. The roof fan can be used in combination with the insulated roof duct DOS G 535 or the roof duct DOS 535. Additionally, the sound attenuator GDH-K 535 can be placed directly between the roof duct and the roof fan.

Zehnder Roof Fan ComfoRoof MX Variants

Solo (Base Version): Suitable for projects where no external control or monitoring is needed, such as residential ventilation and smaller commercial buildings. Equipped with a built-in potentiometer to set the speed. The nine-position switch ranges from 20% to 100% power.
Manual (Advanced Version): Suitable for projects with multiple ventilation requirements and a need for central control, such as commercial buildings, schools, and advanced residential construction. Equipped with a 0-10V input for variable speed control, clock program, Modbus TCP interface for integration with building management systems (BMS), and adjustment via a local web server.
Automatic (Full Version): Suitable for applications where constant air pressure is required, such as industrial buildings and large commercial projects. Equipped with all the features of the Manual version and automatic pressure control.

110, 210, 310 or 320

110: Maximum air output: 1300 m³/h.
210: Maximum air output: 2400 m³/h.
310: Maximum air output: 2900 m³/h.
320: Maximum air output: 4100 m³/h.

230V or 400V/50Hz

The ComfoRoof models are sold with both a single-phase 230V connection and a three-phase 400V/50Hz connection. The D in the product name refers to the power supply voltage of 400V/50Hz. Air performance and sound levels are exactly the same for both versions; however, they differ in connection method and power consumption and current.

Brand	Zehnder Stork
Category	Zehnder ComfoRoof roof fans
GTIN	8717573041065
Manufacturer's item number	476700036
Article number	19020047

Specifications

Category code	75
Housing material	Plastic
Housing material quality	Polypropylene (PP)
Surface protection housing	Other
Material impeller	Aluminium
Material quality impeller/pump wheel	Al 99.5 (3.0255)
Surface protection impeller	Other
Max. air volume at 150 Pa	4750 m³/h
Nominal voltage	230 V
Nominal current	3 A
Frequency	50 Hz
Type of motor	Electronically commutated (EC)
Number of phases	1
Max. electric power input	0.69 VA
Electrical connection	Terminals
With pressure sensor	No
Suitable for (extra) pressure sensor	No
With constant volume flow control	No
Integrated timer	No
With wireless remote control	No
Suitable for wireless remote control	No
Fan tiltable	No
Single-speed motor	No
Single-speed motor controllable with	Electronic
Multi-speed motor with	Other
Control signal	Other
Operation by app	No
Back draught shutter	None
Supporting protocol for Modbus	No
With maintenance-/service switch	Yes
With thermal overload protection	No
Cover design	Round
Exhaust direction	Diagonal
Axial model	No
Air supply roof fan	No
Max. medium temperature (continuous)	60 °C
Rotational speed	1380 1/min
Sound pressure level at 4 m (outdoor) at Qmax	64.1 dB(A)
Indirect drive	No
With sound absorber	No
Operating height	601 mm
Base size, internal, square	645 mm
Base size, internal, round	302 mm
Pitch measure (min)	535 mm
Pitch measure (max)	535 mm
Nominal duct diameter	302 mm