I am looking at picking up a manometer to check air pressure on RTU units. Which Dwyer manometer should I pick up for this type of reading? What model number does anybody recommend?
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Dwyer 2001 which is 0-1.0" wc is good for static air pressures. Dwyer 2010= 0-10" and dwyer 2015=0-15" which would be good for gas pressure. They sell for $63.50 at some sites.
I see commercial VAV RTU static pressure in the 1.00"- 2.00" range all the time. Sometimes higher with improper control. I second hvac5646's suggestion.
I am sure you are correct, i do mostly residential. That number would be 2020. It also shows to be $63.50.
This site has really opened my eyes about the difference in how residential and commercial static is used and controlled. I plan to one day educate myself (mostly thru this site) on resi static to improve my home unit's efficiency. When I have the time, that is ....
I would have Dwyer in a second if I could, company bought a UEI 201. I was in fear of my life about it so to speak, but I will say it is dead on accurate. The other products they make have failed in the ground horribly.
I wish I'd gotten one with a lower setting. I bought mine to test static pressure, but tried to use it on a induced draft furnace to test the pressure switch. It only goes to -1". You might want to keep this in mind.
Fieldpiece makes a digital that is perfect... Use for high,low, air,flue,gas..