I have an inground pool (23,000 gallons) and just purchased a heater for it (Hayward Universal H-Series Low NOx Induced Draft Pool & Spa Heater | 200,000 BTU | Natural Gas | H200FDN). I have a couple of questions I am hoping someone can help me with. I can't find anything stating where the heater needs to be located within the system (i.e. before the filter or after --- before the pump or after). In my system, I only have a pump and DE filter. I assume it would go between the filter and the return line, but wanted to make sure. Also, I am open to any suggestions, wisdom, or any other information you might have to help the installation or use of this product. Thank you...
Brian
Brian