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  1. Replies
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    model # 355aav042080,cnpvp3621acaaaaa,2.5 ton...

    model # 355aav042080,cnpvp3621acaaaaa,2.5 ton condensor 165a. Thanks for your help.
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    The return trunk is already 8x20 (new) and the...

    The return trunk is already 8x20 (new) and the return drop is 14x20(new) how much larger do they have to be?A additional 8x26 floor return was added to living room at bottom of staircase,to add...
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    What should be changed and what are my options?

    What should be changed and what are my options?
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    The only thing that was not changed was the...

    The only thing that was not changed was the plenum, top takeoffs and the short trunk at the right side of plenum.Everthing else is new including main trunk,return trunk,return drop and the 2 old pan...
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    Dash , Are you talking about the short trunk with...

    Dash , Are you talking about the short trunk with the take off in post #14 coming out of the plenum ,that only feeds 1 branch to 1 register?
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    ?

    ?
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    Typical boot on top of supply,due to location of...

    Typical boot on top of supply,due to location of main beam and where supplies go through floor there were not alot of options for installer.The boot rolls 90 then into another 90 out of the top of...
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    other side of coil

    5848This is a picture of the other side of the coil,no changes were made to it.That run just goes to 1st. floor living room.
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    All seams and joints were sealed with mastic. I...

    All seams and joints were sealed with mastic. I had originaly cut a 45 degree angle(see 1st.pic) into top of foundation wall, to have fitting angle down into main trunk,although when the measurements...
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    The 3X12 goes through the sill, I didn't wont to...

    The 3X12 goes through the sill, I didn't wont to remove any more sill,I did notice after he installed that last run that filter went from o % to 70%.The fitting looked kind of restrictive to me sq.to...
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    static on high is .71 , filter is a 20x25x4...

    static on high is .71 , filter is a 20x25x4 merv8, model # 355aav042080,cnpvp3621acaaaaa,2.5 ton condensor 165a. Evolution cont. Main trunk is 8x20 stepped down to 8x16 then a 3x12 that goes through...
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    pics

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    Pics

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    Static Pressure Problem?

    I have had new ducts installed and im still getting "change filter message" after a month or so,Im looking for further sugestions to resolve problem,I can provide pictures if needed.Thanks
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    Duct insulation question

    What is the best type of insulation for ridged duct in an unconditioned crawl space with conc. slab floor? Is 1-1/2 " foil backed sufficient?
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    Mechanical contractor?

    What should I be looking for when getting estimates for duct replacement and or retrofit of a old duct system to work properly with a new high eff. system. What questions would you ask and what...
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    Could anyone tell me what the seer would have...

    Could anyone tell me what the seer would have been on this old condensor Intertherm RACZB-030KAWC approx year 1987
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    I spoke with the installer last night he didn't...

    I spoke with the installer last night he didn't seem to concearned with static reading,he asked if it was heating the house ok,and said he has not had any problems with these systems.When I asked...
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    pics

    http://img253.imageshack.us/img253/9128/1020204ke8.jpg
    http://img264.imageshack.us/img264/7671/1020220pg5.jpg ...
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    Im still working on it,I have a couple of days...

    Im still working on it,I have a couple of days off from work now ,I have a call into the installer(waiting for call back).I contacted another installer who I was going to hire in the 1st. place but...
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    Any opinions?

    Any opinions?
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    Dash thanks for the info,who would be the best...

    Dash thanks for the info,who would be the best bet to work on the duct system & can any damage result from the .85 on high flame keep in mind that 2nd. stage does not come on that often.Im still...
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    I had a media filter cabinet installed with a...

    I had a media filter cabinet installed with a 20x25x4 Bryant merv 8 air filter.Who should I contact to resolve the duct condition.Im a pro auto tech for a new car dealer with vast automotive hvac...
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    The static press. was not checked on the old...

    The static press. was not checked on the old system,I had a new 8x24 return drop installed, 2 ceiling returns on 2nd.fl. 1 in each bed rm. and a low return on 1st fl. with a damper to shut of 2nd....
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    I checked the static readings on stat. Heat low...

    I checked the static readings on stat.
    Heat low 669 cfms,0.27 static
    Heat high1331 cfms,0.85 static
    A.C. 875cfm,0.48 static. Are any of these reasons for concearn,also while pushing lightly on...
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    I noticed that if I pushed down lightly above...

    I noticed that if I pushed down lightly above scroll button when it indicated 100% it would switch back to 0%.Possible problem with the board? Currently it has not been cool enough to run the...
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    I just had a new Bryant system installed and im...

    I just had a new Bryant system installed and im having a strange problem with the media filter detection. After tech left message displayed CLEAN OR REPLACE AIR FILTER,I checked usage and it...
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    Can any one tell me what the clearance off grade...

    Can any one tell me what the clearance off grade is for a concentric direct vent? 90+ furnace in Mass.
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    Model#165ANA030-B / serial#2906E44404

    Model#165ANA030-B / serial#2906E44404
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    I will get the numbers when I get home.

    I will get the numbers when I get home.
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    Its not wind related,it starts turning when I...

    Its not wind related,it starts turning when I turn on power to it and stops when I shut it off.
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    I noticed outside condensor fan to be turning @ a...

    I noticed outside condensor fan to be turning @ a very slow rotation with system off ?Bryant 355aav with 165A condensor with evolution control.
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    thanks for great advise!

    thanks for great advise!
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    at times when its been real hot my 2.5 ton has...

    at times when its been real hot my 2.5 ton has had trouble keeping up on real hot days 92 and above.Im concerned I wont have enough sensible cooling, would 3 ton be to big? we had some weather with...
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    Design conditions( Boston )indoor summer temp 75,...

    Design conditions( Boston )indoor summer temp 75, winter temp 72 ,relative humidity 50% outdoor summer temp 88,winter temp 9,summer grains of moisture 88, daily temp range (medium )sensible gain...
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    does 2.5 ton sound like the correct size to go...

    does 2.5 ton sound like the correct size to go with?
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    its getting harder and harder to find a snap on...

    its getting harder and harder to find a snap on tool rep in my area,also you pay that extra $$ for the service!
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    I used the pre set inside temp of 72 on the...

    I used the pre set inside temp of 72 on the program for summer I will most likley keep it set at 74-76.I also included outside temp of 95 for referance.I live in Mass. and we had some weather over...
  39. Thread: 410 vs 22

    by jdm2447
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    Had a contractor at the house yesterday quoting a...

    Had a contractor at the house yesterday quoting a new system for me, and I asked him how he evacuates a R410a system, and I was told it can't be vacuumed down he just installs a filter dryer!
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    The furnace Size is 80,000 btu. 2 stage

    The furnace Size is 80,000 btu. 2 stage
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    I have compleated manual J calc. Design cond. 88...

    I have compleated manual J calc. Design cond. 88 outside,72 inside for summer & 9 outside,75 inside for winter.1400 sq. cape 21,408 sen. gain,2,526 latent gain,23,934 total heat gain,51,673 total...
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    thanks for help ,do you think am better off with...

    thanks for help ,do you think am better off with r-22 or puron condensor?
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    The condensor is listed on goodman web site.

    The condensor is listed on goodman web site.
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    I am in the process of replacing A 19yr.old...

    I am in the process of replacing A 19yr.old forced hot air gas furnace & central ac.My house is A 6 Rm. dormed cape,2-full baths 1400sq.When the system was working upstairs was always warm,downstairs...
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    Any thoughts on the new R-410a condensor from...

    Any thoughts on the new R-410a condensor from Goodman? Goodman stating it has sound levels among the best it the industry!
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    whats your opions on a system from trane?

    whats your opions on a system from trane?
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    Im looking into replacing ac/furnace 2.5...

    Im looking into replacing ac/furnace 2.5 ton,80,000btu 80%afue gas furnace 19 years old. 1400 sq.foot cape located 20miles so. of Boston .The most thorough quote I received was for a Carrier 58mvb080...
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