Install a flow meter?

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Rollercoastr

Rollercoastr

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May 18, 2016
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West Bloomfield, MI
I'm about to pull the trigger on a new heater. There's a lot of discussion about flow rate, and I really have no idea what mine is - esp with my VS pump. I looked at a few meters that could easily be installed during the heater replacement. Some of them are meters / check valves. I have a working check valve now, but my system requires one, so maybe redundancy would be worth it.

Thoughts?
 
I have an integrated check valve/flow meter on mine (FloVis) and it has helped me determine where to keep my vsp at when heating overnight, since I'm not awake to see if it gives me "low flow" errors ;)

It's only truly useful in the beginning (eg til you know where to set it) but I do like to be able to "see" the flow and I suck at calculating head, so it works for me ;)
 
Rollercoastr said:
I'm about to pull the trigger on a new heater. There's a lot of discussion about flow rate, and I really have no idea what mine is - esp with my VS pump. I looked at a few meters that could easily be installed during the heater replacement. Some of them are meters / check valves. I have a working check valve now, but my system requires one, so maybe redundancy would be worth it.
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In most cases you really don't need to know flow rate even for a heater. Heater's generally work on pressure and not flow rate anyway so knowing the flow rate doesn't help that much. If you want to know the lower limit of RPM, just lower the RPM until the heater alarms with a low pressure warning then bump up the RPM a little.

But if you have a Jandy check valve, you can buy a replacement cover from FloVis that has a check valve so you don't need a second check valve.

https://www.amazon.com/Meter-Check-FlowVis-Praher-Retro-Fit/dp/B01M5LFYY6
 
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