CTC Union EcoZenith i350 L 1x230V, Installation And Maintenance Manual

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59 CTC EcoZenith i360
CTC EcoAir 406 0,21 l/s
CTC EcoAir 408 0,27 l/s
CTC EcoAir 510,610, 614 0,21 l/s
CTC EcoAir 622 0,39 l/s
Step 2 Check minimum heat pump flow
To install an air-to-water heat pump, the flows shown below must be used
even if step 1 gives a lower flow.
This building requires: [l/s]
Step 3 Check whether a volume tank is needed
If the flow is below 0.45 l/s, the system can manage without a CTC VT 80 volume
tank. If the system has a high pressure differential, a volume tank may be required.
If the required flow is greater than 0.45 l/s, this accessory should be installed.
A CTC VT 80 volume tank must be installed to increase the flow in the system in
the following cases:
• If the flow exceeds 0.45 l/s.
• If a mixing valve for an EHS-tank or external peak needs to be installed and
the flow exceeds approx.: 0.35 l/s.
• If the flow in the heating circuit can be closed quickly, e.g. floor heating with
no bypass etc.
A CTC VT 80 volume tank should be installed in the following cases:
• The system volume is less than 20 litres per kW heat pump to achieve good
operation.
Step 4 Dimension the pipeline to the heat pump
The pipe dimensioning between the heat pump and CTC EcoZenith i360
depending on flow and number of metres between the products (single route).
flow
[l/s]
copper pipe 22 mm [m] copper pipe 28 mm [m] copper pipe 35 mm [m]
0.1 >20 >20 >20
0.12 >20 >20 >20
0.14 >20 >20 >20
0.17 21 >20 >20
0.19 17 >20 >20
0.22 12 >20 >20
0.24 10 >20 >20
0.26 8 >20 >20
0.29 >20 >20
0.31 18 >20
0.33 15 >20
0.36 12 >20
0.38 10 >20
0.41 8 >20
0.43 18
0.45 15