Raypak Heat Pump flow issue

[jccvar]

Hello @hotpool2468.

I just installed the same configuration as yours (Raypak 140K and the Intelliflo V3), and I am having the exact same issue. When I close the bypass so the water flows only through the heater, the water flow is restricted by 50%. If I normally get 60 GPM at 50% speed, when the water goes through the heater at the same speed, the flow drops to 24 GPM. In order to get around 40 GPM, I have to set the pump to 80%. Did you find any solution for this huge water restriction?

 

[PoolStored]

JCC...

Is it just the restriction, or are you trying to automate?

Restriction goes with the territory. I normally run 1400 RPM when heater is off. To get 35GPM flow required by the heater, I need to run 2200RPM.

 

[ajw22]

Welcome to TFP.

That is normal restriction of the heat pump heat exchanger. A heat pump has more restrictions then a gas heater and requires higher pump speed to push the water through.

 

[JamesW]

 

[JamesW]

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