User Manual LG WV9-1409W 9kg Front Load Washing Machine with Steam+

Upon installation, both hot & cold were connected. I think there is a heater pump, but I always use the hot water in cycles. When using the steam cycle, it does use hot water. I suppose the option is to the user if you prefer to use hot or cold water, just remember, you have the choice of water temperature settings.

Yes, the machine will still heat the water to the required temperature based on the selected wash program.

The Steam function is available in two cycles: Allergy Care and Baby Care. This heats up the water during the cycle to generate steam to help remove allergens such as dust mites. The steam also thoroughly dissolves detergent to ensure it doesn't cause itchiness or irritation for sensitive skin