6 Find start flow
6.1 Finding a start flow
Finding a suffient flow in order to activate the flow switch can be done in the following ways:
▪
Automatically, using the FIND START FLOW parameter
▪
Manually, setting the the START FLOW CIRC. value for the optimum circulation pump
6.1.1 Find start flow automatically
This option is only valid for a heat pump model with the optimum function.
It is important to know the source where the energy for defrosting is taken when finding a start flow. If the
parameter ENERGY PR. H.W. is OFF, the energy is taken from the heating system. If the parameter is ON, the
energy is taken from the water heater.
To be able to automatically search for a start flow, the following is required:
▪
The installation must be completed and checked.
▪
The heating system and water heater must be filled and bled.
▪
The configuration of the control system must be completed.
▪
The heat pump must be in operation OFF mode with the OFF symbol (
) shown on the display.
▪
Manual test must be deactivated (0).
▪
Heating or cooling must be activated in the configuration
The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding
left (<) arrow for at least 5 seconds. Use + or – to move up and down in the menu.
Find the start flow in the menu:
▪
SERVICE
▪
OPTIMUM
▪
FIND START FLOW
▪
Press right arrow (>) to enter the FIND START FLOW menu.
The off symbol (
) is shown.
▪
Press right arrow (>) to activate the FIND START FLOW menu.
▪
Press + to activate the FIND START FLOW menu.
▪
ON will appear in the display to confirm the setting.
Depending on the operation mode, the result of the flow search may be presented as follows:
Operation mode Heating
If the operation mode is heating with cooling completely tuirned off, the result will be one of the following:
▪
FLOW OK
▪
FLOW NOT OK
Commissioning Atec
VIGFG102 Thermia Värmepumpar
16
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