Siemens NXAIR M - Electronic Temperature and Humidity Controller; Applications for Temperature Controller

Panel heater
238 NXAIR M 139-2021.9 / 07
24.3 Electronic temperature and humidity controller
NOTICE
Damage due to incorrect application
The temperature and humidity controllers require direct connection to the ambient
air.
Do not cover the ventilation slots of the temperature and humidity
controllers.
The electronic temperature and humidity controller can either be designed as a normally closed contact or as
a normally open contact.
Temperature function
If the ambient temperature falls below the adjusted value, the circuit for heater
operation is closed (LED lights up).
If the ambient temperature rises above the adjusted value, the circuit for heater
operation is opened (LED does not light up).
Humidity function
If the relative humidity rises above the adjusted value, the circuit for heater
operation is closed (LED lights up).
If the relative humidity falls below the adjusted value, the circuit for heater
operation is opened (LED does not light up).
Fig. 395: Electronic temperature and humidity controller
24.4 Applications for temperature controller
NOTICE
Maloperation
Observe the manufacturer's information.
Please do absolutely observe the enclosed operating instructions for the
temperature and humidity controllers.
Temperature for
application [°C]
Humidity for application,
not condensing [% r h]
Mechanical temperature controller
−20 to +80
≤ 90
Electronic temperature and humidity controller
0 to +60
≤ 90
1
Selector for temperature control, with LED
2
Selector for humidity control, with LED
1
2