How to test and flush
On step 4, your installation instructions say to "Reinstall cap and bonnet and tighten securely. Plug both outlets with proper fittings. Check for leaks."
Firstly, you only provided one "reusable test plug" yet you say to plug both outlets. You also say to reinstall cap and bonnet before putting the plugs in, which is impossible, unless the plug actually goes on the outside of the valve somewhere for testing. Secondly, you don't say how to go about checking for leaks. Do I simply turn the water supply on for X amount of time or how long is sufficient? Do you have a video on this procedure? I can't find it on your support page. More detailed instructions would be helpful.
Additionally, do you recommend a specific type of cap for the lower port if I am not using with a tub spout? I.e. Must it be brass or can it be iron, etc.?