A:Answer Greetings!
We wish to help you with your Samsung dishwasher model and installation of it with a cold water line.
This dishwasher model is ADA-compliant (Americans with Disabilities Act Standards for Accessible Design). The dishwasher model requires a hot water line versus a cold water line during operation; hence, in the installation guide, the hot water supply line must support water pressures between 20 psi and 120 psi (140-830 kPa).
In addition, this Samsung dishwasher does not have a water heater, all the more reason that a hot water supply line is needed.
Dishwasher detergent typically requires hot water to properly activate and dissolve, which is why it is important to ensure that your dishwasher is maintaining the proper water temperature.
Leo