We are in the final step of our build. I have a Jandy Pro Series pool heater and a Starite variable speed pump. The poolbuilder came by for the final set-up today. They set the pump to run at 40 gpm. He told me that would be enough flow for the heater. The heater is now saying "check flow." The manual for the Jandy says minimum flow is 30 gpm. Am I missing something?
Heater Check Flow
- Thread starter sweinberg83
- Start date
The gpm set on pump doesn’t necessarily reflect the gpm after the filter, especially if it’s dirty.
Thanks, Poolbreh. It is a brand new filter. I first noticed the problem when I turned on the booster pump for the polaris. It has been off for a while. When I increase the RPMs on the pump the message on the heater goes away. Should I change the program to more gpms or is this a temporary issues?
The booster pump should be unrelated unless it’s plumbed before the heater. If anything it would increase flow. If you have automation you can bind a speed to the heater, so it doesn’t mess with your day to day scheduling. If you don’t have automation you can set a designated speed on the back of the pump for when you do heat. Yes you should increase the speed slightly.
I don't have automation. The booster is plumbed before the heater. I will increase the flow. Thanks for your help.
To make the heater function, I set the pump to 48 gpm. It is a variable speed pump, should I leave it there all day or am I wasting money?
I would designate a speed at 48gpm if that’s what make your heater happy just for heater operations. Everything else would be your normal scheduling. Is it your plan to run the heater consistently to maintain temp?
The heater uses a pressure switch, it has no idea what the flow is.
The gpm before and after the filter have to be the same.
The Polaris will reduce the pressure at the heater's pressure switch whether it is plumbed before or after the heater.
What is the equipment elevation relative to the pool?
Do the returns have eyeballs?
I would like to be able to set and forget pool heater if possible. Mostly though I am scared I broke something when changing the gym setting.
The equipment seems to be pretty even with the pool surface. What are eyeballs for the returns?
Also, when the pump is running 50 gpm my filter has a psi of 7. When I drop it to 40(where pb set it) the psi on the filter drops to about 5 or sometimes even 3.
That's an eyeball.
It helps direct the flow.
It provides extra back pressure, which will help the heater stay on.
You can adjust the pressure switch in the heater if you feel comfortable doing that.
See the manual for the procedure.
It helps direct the flow.
It provides extra back pressure, which will help the heater stay on.
You can adjust the pressure switch in the heater if you feel comfortable doing that.
See the manual for the procedure.
