Automatic call-up

The AUTO SET function is only active at power up. There are two possibilities for calling up the AUTO SET function.

If the commissioning date has not yet been stored and the corresponding system parameters for activating this function are set to ON, connected or disconnected sensors are registered automatically whenever the control device is switched on. Fault messages from sensors (short-circuit interruption) are suppressed in this period. After the commissioning date has been saved, a change to the sensor configuration is only still possible after the manual SET function. The AUTO SET function can be enabled at any time again for a day (day change) using the system parameter.

237

7.3.13 Commissioning, maintenance and troubleshooting help 7.3.13.1 Automatic set function

Function The central devices are equipped with a function which ignores unused sensors and control functions. Fault messages from non- connected sensors are not displayed.

Hydraulic Components

This function works as described under "Safety temperature limiter check", with the following extension:

As soon as a safety temperature limiter function is detected within the BUS system, all consumers (heating circuits) are disabled.

Configuration of cascade control occurs in the central device with the bus address 10. If that controller becomes unavailable due to some defect, the remaining stages continue operating in an emergency mode. In this mode all heat generators adjust to the same boiler setpoint temperature (parallel operation). As soon as the cascade manager comes back into operation, cascade control is reactivated automatically.

To enable the cascade function to process fast switching events, the cascade data are transferred with a higher priority. Consequently, the data transmission from any device to the master device, and of the request values from the master to the slave devices, takes no longer than approx. 3 seconds.

SDC / DHC

Safety temperature limiter

Emergency mode

Data transmission

EN2H-0221GE51 R0808

EN2H-0221GE51 R0808 specifications

The Honeywell EN2H-0221GE51 R0808 is a versatile and efficient solution designed to enhance HVAC (Heating, Ventilation, and Air Conditioning) systems in commercial and residential settings. This device stands out in the marketplace due to its robust features, technologies, and characteristics that cater to a variety of applications.

One of the primary features of the EN2H-0221GE51 R0808 is its user-friendly interface, which allows for easy configuration and management. The device is equipped with an intuitive display that provides real-time data, enabling users to monitor system performance at a glance. This functionality not only simplifies operation but also enhances user engagement, making it an ideal choice for both novice and experienced users.

The device employs advanced control technologies, including proportional-integral-derivative (PID) control algorithms. This ensures that the HVAC system operates at optimal efficiency, maintaining the desired temperature while minimizing energy consumption. The precision of the PID control allows for smoother transitions and increased comfort levels within the environment.

Another significant characteristic of the Honeywell EN2H-0221GE51 R0808 is its compatibility with various communication protocols, including Modbus, BACnet, and more. This flexibility facilitates integration with existing building management systems, allowing for comprehensive control over heating and cooling operations. Such interoperability aids in streamlining processes and enhancing system performance.

Durability is also a hallmark of the EN2H-0221GE51 R0808. Constructed with high-quality materials, the device is designed to withstand the rigors of demanding environments. Its sturdy design contributes to longevity and reliability, reducing the need for frequent replacements and maintenance.

Energy efficiency is at the forefront of the Honeywell EN2H-0221GE51 R0808's design. It incorporates features that allow for advanced energy monitoring and reporting, helping users identify potential savings areas. This attention to energy consumption not only promotes sustainability but also leads to significant cost savings over time.

Finally, the EN2H-0221GE51 R0808 supports remote access capabilities, enabling users to control and monitor their systems from anywhere. This feature is particularly beneficial for property managers and business owners, as it allows for swift adjustments and oversight, ensuring that temperature and air quality remain within desired parameters.

In summary, the Honeywell EN2H-0221GE51 R0808 is a sophisticated and reliable solution for HVAC systems. Its user-friendly design, advanced control technologies, compatibility with communication protocols, durability, energy efficiency features, and remote access capabilities make it an outstanding choice for various applications in both commercial and residential scenarios.

Honeywell EN2H-0221GE51 R0808 service manual Automatic call-up

Models: EN2H-0221GE51 R0808

SDC / DHC