CTC Union 588400001, Installation And Maintenance Manual

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21 CTC EcoAir 610M / 614M / 622M 400 V 3N~
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0 0,05 0,1 0,15 0,2 0,25 0,3 0,35 0,4 0,45 0,5 0,55 0,6
EcoAir 610M / 614M EcoAir 622M
Pressure differential (kPa)
5.4 Pressure differential diagram for CTC EcoAir 600M
Setting the temperature differential
For external control, a circulation pump is installed so that the right flow
through the heat pump can be guaranteed.
Outdoor temp. (°C) -10 -5 0 +5 +7 +10
CTC EcoAir 610M / 614M Primary flow 35 °C Flow = 0.21 l/s 4 °C 4.5 °C 5.5 °C 6.5 °C 7 °C 8 °C
CTC EcoAir 622M Primary flow 35 °C Flow = 0.39 l/s 4 °C 5 °C 6 °C 6.5 °C 7 °C 8 °C
In some systems the entire radiator flow goes through the heat pump, which
means the pump must be sized according to the flow of the entire system.
For safe operation, the following flows should be considered:
• 760 l/h (CTC EcoAir 610M / 614M)
• 1400 l/h (CTC EcoAir 622M)
This provides a temperature differential of approx. 7 °C for an outside
temperature of +7 °C and a primary flow temperature of 35 °C.
Flow speed Q (l/s)
Set the right temperature differential by adjusting the speed of the circulation
pump. This is to ensure that the right differential for the current outdoor
temperature is produced according to the table.