TACOCONTROL Z1 S

Functional description

4.2 Drinking hot water control

Setpoint reduction

Setpoint reduction to actual value

Maximum domestic hot water tempera-

ture

4.3 Heating control

Setpoint reduction

Setpoint reduction to actual value

Maximum supply temperature

As soon as a flow is detected in the domestic hot water, the cor-

responding control valve is used to make adjustments to the set

nominal temperature.

The following functions for automatic adjustment of the specified

setpoint prevent excessive heat from being drawn from the heat

network.

If the temperature in the supply from the heat network is too low

to allow the specified setpoint to the reached, then the controller

automatically reduces the nominal temperature to a value that can

be reached. As soon as the temperature from the heat network is

sufficient again, then the set nominal temperature is used again.

If the current nominal temperature is not reached for an extended

period, then the controller reduces the setpoint to the hot water

temperature currently reached for a few minutes.

If the domestic hot water temperature exceeds a specified maximum

temperature, then the drinking water control switches off until the

temperature has cooled down again (this setting can only be made by

service personnel).

If there is a heat request from the room thermostat (potential free

contact closed), then the heating supply is adjusted to the specified

setpoint by means of the corresponding control valve.

The following functions for automatic adjustment of the specified

setpoint prevent excessive heat from being drawn from the heat

network.

If the temperature in the supply from the heat network is too low

to allow the specified setpoint to the reached, then the controller

automatically reduces the nominal temperature to a value that can

be reached. As soon as the temperature from the heat network is

sufficient again, then the set nominal temperature is used again.

If the current nominal temperature is not reached for an extended

period, then the controller reduces the setpoint to the temperature of

the heating supply currently reached for a few minutes.

If the temperature of the heating supply exceeds a specified max-

imum temperature, then the heating control switches off until the

temperature has cooled down again (this setting can only be made by

service personnel).

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Operating instructions

05/2024 Item no. 215251 EA no. EA-1291