How can you adjust the dip switches on the Rheem Tankless hot water heater RTG-74XN?
Here is the link to the service manual for your tankless water heater: http://globalimageserver.com/fetchDocument.aspx?id=14564cf7-cd7b-4814-9e1f-4fea34c7b30c See page 35 for specifics regarding dip switch settings. If you have problems with the link, post again and I will publish it on my company website for you to review.