It changes the system's design and inflow, so suitability and installation requirements need a separate assessment. A repair does not automatically authorise expansion.
What the observation means
The unit, pipe route and existing fixtures may already define its permitted arrangement. A spare inlet is not sufficient evidence.
A useful next step
Discuss any proposed change explicitly with the appropriate installer. This breakdown service does not imply new installation work. Do not join another appliance or basin during a fault visit without the necessary design and scope decision.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.