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I have a 1.5 hp pentair heater model 160354, and all was fine, starting at 10 psi, (pool is 13,000 gallons, 14 x 28, and 3.5-5.5 deep) We just added a heat pump, Rheem Raypak model 5450 and now the starting pressure jumped to almost 30 psi. I read 30 psi starting pressure is too high...