Samson 5179, 5100 operating instructions Functions of the DHW circuit

Functions of the DHW circuit

There are two types of optimization depending on the activation conditions:

￿Outdoor temperature-dependent advance heating, room temperature-dependent deacti- vation

The controller activates the heating depending on the outdoor temperature before the time-of-use starts in normal operation. The Advance heating time is based on an outdoor temperature of –12 °C. The advance heating time is shorter when the outdoor temperature is higher (see section 5.7).

￿Room temperature-dependent advance heating and deactivation

The controller calculates the required advance heating time (max. 6 hours) adapted to the building characteristics, resulting in the Day set point (rated room temperature) being reached in the reference room when the time-of-use starts. The heating is heated with the maximum flow temperature during the advance heating phase. As soon as the Day set point is reached, weather-compensated control starts.

The controller deactivates the heating in both types of optimization depending on the room sen- sors up to two hours before the time-of-use finishes. The controller chooses the deactivation time such that the room temperature does not drop significantly below the desired temperature until the time-of-use ends.

During the advance heating period and the premature deactivation of the heating system, the icons or blink on the display. Outside the times-of-use, the controller monitors the Night set point (reduced room temperature). When the temperature falls below the night set point, the controller heats with the max. flow temperature until the measured room temperature exceeds the adjusted value by 1 °C.

Note!

Direct sunshine can cause the room temperature to increase and thus result in the premature de- activation of the heating system.

When the room temperature decreases while the heating system is temporarily outside its times-of-use, this can prematurely cause the controller to heat up to the adjusted Room set point.

Function	WE	Configuration
Room sensor RF1, 2, 3	OFF	Co1, 2, 3 -> Fb00 = ON

Outdoor temperature-dependent advance heating, room temperature-dependent deactivation:

Optimization	OFF	Co1, 2, 3	-> Fb05 = ON, select: 2
	120 min	Advance heating time / 0 to 360 min
Outdoor sensor AF1, 2, 3		Co1, 2, 3	-> Fb02 = ON
Room temperature-dependent advance heating and deactivation:
Optimization	OFF	Co1 to Co3 -> Fb05 = ON, select: 3

EB 5179 EN 47