[NgtC21] Night cooling, based on the operating mode in the rooms and temperature values
Program block, name / node subtype: [NgtC21] Night cooling, based on the operating mode in the rooms and temperature values
Library hierarchy: Ventilation and air conditioning functions
Family: NgtC
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Configurator
Program blocks are stored in the library without I/Os. Use the auto-create and auto-connect functions to create I/Os and/or to connect them to the interface blocks, e.g., R_A, CMD_B. Alternatively, take the I/Os from the folder containing the predefined I/Os in the library and/or from the plant and connect them to the interface blocks.
Enables a "Night cooling" operation mode if the following conditions are met (NgtC21):
- The plant is off.
- The "Night cooling" is enabled by its own scheduler.
- The outside temperature is not too low.
- The difference between the room temperature and the outside temperature is high enough.
- The room temperature is not below the heating setpoint.
Stops the plant and the "Night cooling" operation mode if any of the above conditions are not met.
During "Night cooling":
Some aggregates are on (dampers are opened, fans are running, coils are off, control components, except for the logic for night cooling are off).
Name | Description | Type | Alarm / Notification class | Trend / Type |
|---|---|---|---|---|
Sched | Scheduler | BSchedule: Binary scheduler | N/A | N/A |
TOaLoLm | Outside air temperature low limit | ACnfVal: Analog configuration value | No | No |
SwiOnDT | Switch-on via temperature difference | ACnfVal: Analog configuration value | No | No |
This function needs values for outside temperature and setpoint heating.