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Posted by on May 11, 2007, 7:21 pm
> Need to get a lawyer on this. The duct is grossly undersized for your
> system. You have a six ton unit, a 14" round is good for about a 2.5 ton
> system max. The return isn't big enough for even a 2 ton for our installs.
>
> Now, if you failed to mention that each of the three zones have 14" round
> then that's ok, IF they never shut down. Do you have controlled zones or
> just three zones that supply air all the time and each is 14"
>
> If the total supply is one 14" duct and your only getting 536 CFM's; then
> there are tons of elbows, improper take offs, too small registers.
>
> In other words, you need a lawyer. You may also need a certified engineer
> for a written statement. What took place was in my opinion a crime.
>
> BTW, Water Furnace doesn't care any more than any other manufacture. They
> got their money and they will say that the unit will perform as specified if
> installed correctly. Yours ain't.........
>
>
>
>
>
> > My house is 4200 sq.ft. My installer installed a EZ072 split heat
> > pump. 3 zones. We have had problems from the start. My total Duct
> > leakage Corrected to 25Pa is 536 CFM's. This is after he corrected
> > my problems? My supply is 14'' round. Return is 9x16 . The unit
> > never stops at 30F or above 85F. We have been in our new home 1
> > year. I've had another Waterfurnace dealer, do a blower door test,
> > and two load cal.
> > which said we needed a 4.1 ton at 1940 cfm. Waterfurnace has been no
> > help. The State inspectors can't get our problem fixed.
> > Any suggestions?- Hide quoted text -
>
> - Show quoted text -
Thanks,
He has 14'' round coming out of the air handler, At about 3 feet, one
zone breaks left about 10 feet to a damper, 10 more feet its reduced
down to 10'' for about 35 ft. One other 14'' breaks right to another
damper, and then reduced to 10'', these two zones supplies 3300 sq.
ft. At about 6 feet one 14'' goes about 90 feet upstairs to another
damper upstairs, it also reduces to 10'' to supply 900 sq.ft. He told
the inspector that he had the high speed set on 1850 cfm's on the
Intellizone. Does this make anymore sense? or no sense at all?
Thanks,RT
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