[DhwCtl22] Sensors, setpoints and control for domestic hot water, direct domestic hot water treatment
Program block, name / node subtype: [DhwCtl22] Sensors, setpoints and control for domestic hot water, direct domestic hot water treatment
Library hierarchy: Heating equipment
Family: DhwCtl
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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.
Calculates the setpoint for the domestic hot water for direct treatment.
Option: Circulation pump (1xBO, 4xBI)
Controls a pump (Pu21). The circulation pump is periodically switched on and off, e.g., 10 minutes on, 20 minutes off.
Option: Legionella prevention
Used in hot water systems to prevent the growth of the legionella bacteria or as a thermal disinfectant to kill legionella (LglPrev21).
Option: Overtemperature detector (1xBI)
Reads the signal from an overtemperature detector and generates an alarm.
Name | Description | Type | Alarm / Notification class | Trend / Type | |
|---|---|---|---|---|---|
TDhw | Domestic hot water temperature | AI: Analog input | Yes, 8 | Yes, 2 | |
SpTDhw | Setpoint domestic hot water temperature | ACnfVal: Analog configuration value | N/A | No | |
Name | Description | Type | Alarm / Notification class | Trend / Type | |
|---|---|---|---|---|---|
LglPrev | Legionella prevention | N/A | N/A | ||
CirPu | Circulation pump | N/A | N/A | ||
OvrTDet | Overtemperature detector | BI: Binary input | Yes, 4 | No | |