EcoRenovator - View Single Post - Designing a General Purpose Heat Pump Controller

buffalobillpatrick · 09-09-14, 11:35 AM

A/C what happened to thread progress?

I have a MPX2010DP differential pressure "AIR" sensor that I got for my DIY HRV.
Idea was to keep house pressure a little above outdoor pressure for Radon mitagation.
Problem is that I don't know how to protect outside hose end from wind effects.
EDIT: Possibly take a sample every second for a minute & average them.

I think that the liquid pressure sensor that I referenced in post #232 would work reliably long term, I hope. I am ordering one for loop input pump.

On my current boiler system, I have 2 Taco water pumps in series with a on/off switch to each.
There is a manual read pressure gauge on pumps output.
It is very easy to check that each pump raises output pressure by about 3psi, both on about 6psi.

If a valve is closed in output pipe the pressure doubles, thus it is easy to determine if the pump is working and flow is happening, with a gauge.

Arduino code would be easy.

Note: 1psi = 2.35' of head.

09-09-14, 11:35 AM	#234
buffalobillpatrick Master EcoRenovator Join Date: Mar 2014 Location: Florissant, Colorado Posts: 599 Thanks: 814 Thanked 59 Times in 55 Posts	A/C what happened to thread progress? I have a MPX2010DP differential pressure "AIR" sensor that I got for my DIY HRV. Idea was to keep house pressure a little above outdoor pressure for Radon mitagation. Problem is that I don't know how to protect outside hose end from wind effects. EDIT: Possibly take a sample every second for a minute & average them. I think that the liquid pressure sensor that I referenced in post #232 would work reliably long term, I hope. I am ordering one for loop input pump. On my current boiler system, I have 2 Taco water pumps in series with a on/off switch to each. There is a manual read pressure gauge on pumps output. It is very easy to check that each pump raises output pressure by about 3psi, both on about 6psi. If a valve is closed in output pipe the pressure doubles, thus it is easy to determine if the pump is working and flow is happening, with a gauge. Arduino code would be easy. Note: 1psi = 2.35' of head. Last edited by buffalobillpatrick; 09-09-14 at 12:13 PM..