Installation diagram for hot water recirc Home › Forums › Public Forums › General Plumbing › Installation diagram for hot water recirc This topic has 1 reply, 2 voices, and was last updated 23 years, 9 months ago by SylvanLMP. Viewing 1 reply thread Author Posts 20 Jan 2001 at 12:40 am #274455 Adam Bree I am looking for a diagram for installing a hot water system. My understanding is the hot water is returned to the drain outlet on the water heater and there needs to be a check valve on the return line. Is this correct?Thank you, Bill Diamond 20 Jan 2001 at 12:43 am #289784 SylvanLMPParticipant Bill contact NIBCO MFG and look into buying “JUST RIGHT” from them Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In