I have a York variable speed air handler on a York electric pump. Blower
noise is out of this world. I know that the unit attempts to maintain the
proper CFM as it responds to the ESP. Newer unit on an older home with
addition. Could lack of sufficient returns be problem and how do you check
something like that? Thanks.
Nick In Ohio
You know what, stfu. Whoever the hell you are, and why you got this beef
with me I don't understand, If you gotta question of me, call me. If you
gotta problem with me show up at my door. You are a waste of time and now
kill filed. If you want to contact me keep it off the group and e-mail me.
But get the fuck off my back.
1) determine total cfm based on nominal 400 cfm per ton
2) take your Testo 506 meter and measure pressure drop
across filter, coil, airhandler, supply and return grills
3) obtain fan curve from manufactures literature that shows
delivered cfm at X ESP
4) use digital flow hood and measure actual cfm's for all
supply's and returns.
5) make duct modifications as necessary to obtain desired
cfm for each supply and return grill (this is assuming
you've already did a load calc and manual d for each room or
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