3.4
3.4 Optimisation
Building too hot
Building is not heating up
Reference room is hot,
but individual rooms (e.g. bathroom) too cold
Reference room is not
reaching the room set temperature,
but individual rooms (e.g. bathroom) are hot
3.5 Fixed-Setpoint Regulation / Setting a Horizontal Heating Characteristic
Curve
In special cases (e.g. heating a buffer tank to a constant
temperature), it is possible to set a characteristic curve which is
independent of the external temperature. Make selections in the
menu "Settings – Heating circuit 1/2/3 – Control by – Fixed-
setpoint". The desired return set temperature can be set in the
following menu item "Fixed-setpoint Control – Return set
temp.".
4 Hot water preparation
Hot water cylinders with a sufficient heat exchanger area should
be used for DHW preparation. These must be capable of
permanently transferring the maximum heat output of the heat
pump.
Regulation is carried out using a sensor installed in the hot water
cylinder. The sensor is connected to the heat pump manager.
The temperatures attainable in heat-pump-only operation are
below the maximum flow temperature of the heat pump.
4.1 Basic Heating Using the Heat Pump
A request for domestic hot water is recognised if the current
hot water temperature < (is lower than)
Set temperature – hysteresis DHW.
A domestic hot water request ends when the hot water set
temperature is reached.
Menu
Preconfiguration
Preconfiguration
Table 4.1: Settings for basic heating of domestic hot water (user settings carried out in compliance with the operator's manual)
EN-22
1st measure
Reduce room set temperature
Raise room set temperature,
increase volume flow
Carry out hydraulic equalisation (reduce
volume flow in the reference room)
Carry out hydraulic equalisation (raise
volume flow in the reference room)
NOTE
The entered fixed-setpoint cannot be changed by pressing the buttons
Hotter ( and Colder (.
For higher hot water temperatures, the heat pump manager
offers optional control of a flange heater.
Regulation can also be carried out using a thermostat. With this
application, selective reheating using a flange heater is not
possible.
NOTE
The additional setting options for heat pumps with an additional heat
exchanger installed in the hot gas are described in Chap. 8 on p. 31.
NOTE
DHW heating can be interrupted by defrosting or by the high-pressure
safety program.
Submenu
Hot water preparation
Flange heater
2nd measure
Reduce minimum return temperature
Raise maximum return temperature
Raise minimum return temperature.
This can lead to the room set temperature in
the reference room being periodically
overshot.
Raise maximum return temperature
Set value
Yes
No