D40 - Humidistat Fantini Cosmi - Free user manual and instructions

Product Type	Humidistat
Brand	Fantini Cosmi
Model	D40
Dimensions (mm)	80 x 80 x 30
Weight (g)	100
Power Supply	230V AC, 50/60Hz
Humidity Range	10% – 90% RH
Accuracy	±3% RH
Output	SPDT Relay, 5A @ 250V AC
Protection Rating	IP30
Material	ABS Plastic
Mounting	Wall-mounted
Display	None
Functions	On/Off control, adjustable humidity setpoint
Maintenance	Clean with a dry, soft cloth
Safety	CE compliant
Spare Parts	Not available
General Information	Designed for HVAC applications to control humidity levels

Frequently Asked Questions - D40 Fantini Cosmi

How do I set the desired humidity level on the D40 humidistat?

Use the adjustment knob on the front of the device to set the desired humidity percentage. Turn clockwise to increase or counterclockwise to decrease the setpoint.

What is the power requirement for the Fantini Cosmi D40?

The device operates on 230V AC, 50/60Hz. Ensure proper wiring and connection to a suitable power source.

How do I wire the D40 humidistat?

Refer to the wiring diagram in the manual. Typically, connect the live and neutral wires to the power terminals, and the relay contacts to the load (e.g., humidifier or dehumidifier).

Can the D40 be used with both humidifiers and dehumidifiers?

Yes, the D40 can control either a humidifier or dehumidifier depending on the wiring and configuration. The relay output switches the load on or off based on humidity setpoint.

Why is my D40 not turning on?

Check the power supply: ensure voltage is present and the wiring is correct. Also verify the fuse (if any) and that the device is not damaged.

How do I clean the D40 humidistat?

Disconnect power before cleaning. Use a dry, soft cloth to wipe the exterior. Do not use water, solvents, or abrasive cleaners.

Is the D40 humidistat calibrated?

The device is factory calibrated. If you suspect inaccuracy, you may need to verify against a reference hygrometer. There is no user calibration adjustment.

What is the operating temperature range for the D40?

The typical operating temperature is 0°C to 50°C (32°F to 122°F). Avoid placing it in extreme conditions.

Can I mount the D40 outdoors?

No, the IP30 rating means it is only suitable for indoor use where it is protected from water and dust. Install it in a dry location.

How do I know when the D40 is controlling the humidity?

The relay will click and the connected load (humidifier/dehumidifier) will turn on or off. There is no indicator light on the D40 itself.

USER MANUAL D40 Fantini Cosmi

The humidostat D40 senses the room humidity through a capacitive sensor and it compares it with the set value. It switches the output relay for the humidification or dehumidification of the room.

Enclosure, in thermoplastic material with protection degree IP20.

The electronic circuit and the sensor provide precise regulation of the humidity degree.

The range is adjustable between 30% and 90% of relative humidity (RH%).

TECHNICAL CHARACTERISTICS

Voltage supply: 230V 50Hz

Power consumption 2 VA

Sensing element with internal capacitive sensor

Output relay 6(3)A-250V a.c. with free contacts voltage

Signal led ("on" when ambient humidity is higher then the set value)

Storage temperature: 0 to 50°C

N.B. Avoid to install the humidostat in moisture ambient.

ELECTRICAL DIAGRAM

White instant oven with rotary dial and control knob, no visible text or symbols on body

EXAMPLE OF WIRING CONNECTION WITH AN HUMIDIFIER

EXAMPLE OF WIRING CONNECTION WITH A DE-HUMIDIFIER

TYPE	RangeUR%	Storage temperature	Supply voltage	Protection Degree Peso	Unit weight	Packaging Differen
D40	30÷90	0÷50 52802050 Hz