CTC Union 6212576, Installation And Maintenance Manual

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CTC EcoLogic S
2.1.2 Heat pump for existing heating system (with 3-way valve
solution)
System description
This type of connection allows a ground source or air/water heat pump to be added to the existing heating
system consisting of, for example, heat pump (exhaust air, ground source), electric boiler, wood boiler, oil
boiler or pellet boiler, with 3-way valve control for DHW production.
Conditions
The heat pump must be installed, in terms of fl ow, before the existing heating system. Preferably by
interrupting the return fl ow from the heating circuit. In cases where the 3-way valve is located outside the
heating system, the heat pump must be installed before the 3-way valve.
When the 3-way valve switches to DHW, EcoLogic is signalled to activate a fi xed setpoint so that the heat
pump can also be used for hot water production.
2.1.3 Replacing a heat pump connected to CTC EcoEl
System description
For installations where the existing heat pump is connected to the CTC EcoEl V1/V2/V3 electric boiler and
the heat pump needs to be replaced.
Conditions
The existing heat pump will be replaced by the new heat pump. The electric boiler power output is limited
in order to minimise the need for additional energy. To optimise the heating circuit, the heat pump settings
should be subsequently fi ne-tuned for optimal functionality under different operating conditions.
To disconnect the existing heat pump and convert the electric boiler in order to limit the power output,
refer to Appendix "Types of Operation with CTC EcoEl V2".
Figure: Example of system solution with
heating system with 3-way valve solution
Figure: Examples of system solution
connected to older heating system,
e.g. CTC EcoEl