titanium pool & spa heat exchange 155K

YOU DO NOT WANT PORTS ON SAME SIDE AS THE WATER TENDS TO TAKE THE PATH OF LEAST RESISTANCE AND ONLY FLOW THOUGH PART OF THE HEAT EXCHANGER. PORTS ON DIFFERENT SIDES MAKES THE WATER FLOW THROUGH ENTIRE HEAT EXCHANGER FOR BETTER HEAT TRANSFER 155,000 BTU titanium salt water Pool/ Hot Tub heat exchanger