5 Flow and pressure
5.1 Flow and pressure
Water flow in the heating system
The minimum flow rate and defrost energy must always be assured. The minimum flow rate is 1 m³/h and the recommended flow rate is
to have at least 10% margin, resulting in a recommended flow rate of 1,1 m³/h or approximately above 18 litres per minute.
The water flow can be found in SYSTEM INFORMATION - Operating data - Flow rate and it is shown in l/min. The minimum water flow
is set to 70% as default, but this needs to be adjusted that you have at least the recommended water flow as minimum water flow. In
order to adjust the minimum water flow go to SETTINGS - Circulation pumps - Condenser pump HP - Min speed. Adjust the minimum
speed of the condenser pump in order to have at least approximately 18 l/min.
Pressure loss - Athena
Recommended min. ow rate
Internal pressure loss in Athena outdoor unit.
Technical description
Athena
Thermia AB AWAT01TD0102
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