In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Checking circ sizing in existing system?
I've been seeing the Alpha pumps come up and have been starting to wonder if upgrading my 007 and 009 Tacos might be sensible.
However, I have very little confidence in the previous owner's math skills and his ability to have selected the appropriate circ sizes for the heating. Does anyone have any tips for measuring an existing system to verify whether or not the pump sizing is close to what they should be?
Is it as simple as measuring all the baseboard runs and accessible pipes/adding up the valves and other inter-pipe connections that are visible and coming up with a head calculation?
I understand that to be more accurate, I'd need to do a heat loss calc and not just use the max BTU rating of the boiler (HTP Munchkin M80) to determine the necessary flow rate, right?
My boiler currently outputs to a Taco 009 then to three additional circulators for each zone; 2x 007 and one more 009. The zone circulators are controlled by a t-stat triggered Argo AR861-3II.
I've attached a picture of the circ sizing recommendation from the HTP boiler manual: