Need owner’s manual. Home › Forums › Public Forums › General Plumbing › Need owner’s manual. This topic has 2 replies, 3 voices, and was last updated 23 years ago by bungie. Viewing 2 reply threads Author Posts 29 Aug 2001 at 7:37 am #275219 MasterPlumbersKeymaster I am looking for an owner’s manual for a water heater I bought at a garage sale. The model number is21Vp50E-1A. Please send me any information. 29 Aug 2001 at 12:42 pm #291454 fourth yearParticipant What is the brand? What problem do you have that requires an owner’s manual. Water heater problems are usually generic and have nothing to do with the make and model of the heater. 29 Aug 2001 at 1:04 pm #291455 bungieParticipant Its a Rheem gas unit Author Posts Viewing 2 reply threads You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In