Balanced external static pressure question
Balanced external static pressure question
(OP)
I have a 3 ton package heat pump system and have a question about External Static Pressure. The system list a max ESP 0.5 iwc. My measured ESP is .42 iwc, which includes 0.25 of the return filter. The thing I'm finding strange is the entire ESP is in the return duct, with the supply duct barely registering and back pressure unless I start closing down registers. Is this unbalanced situation an issue and why?





RE: Balanced external static pressure question
That by itself has nothing to do with balancing.
RE: Balanced external static pressure question
If your pressure is at or below rated pressure, the machine should work as cataloged......it doesn't care if the pressure drop is in the supply or return.
RE: Balanced external static pressure question
At the pressures that I am measuring and referring to the blower performance data charts, the system should be delivering right at 1200 CFM with a clean filter, so it sounds like I can relax and not worry about the differences.
I just wasn't sure if the load on the blower would be less or more with all of the work being pulling and none pushing air through the system.
RE: Balanced external static pressure question
A brush-up in basic physics may be in order.