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  1. Bonafide, that link isn't working for me...what...

    Bonafide, that link isn't working for me...what is is talking about?

    Actually spoke with some Building Science people and they are a little concerned about foaming the roof since I already have a...
  2. well the results are in and the energy audit...

    well the results are in and the energy audit showed there was plenty of insulation in the attic but there was some leakage in the ductwork noticed during the blower door test....

    I guess the poor...
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    thanks guys...i'll stick with tried and true - no...

    thanks guys...i'll stick with tried and true - no HV
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    high velocity systems good?

    I'm going to be building a new summer home on the shore in New England and was thinking of going with a high velocity heating/cooling system. Is there a lot of experience out there with them to say...
  5. No cans, etc...ceiling upstairs is sealed with...

    No cans, etc...ceiling upstairs is sealed with blown in foam. BUT Icynene now says that it needs a vapor retarder and my builder just primed the ceilings (cheapskate and I didn't notice the...
  6. Sorry for taking a while to get back to you...

    Sorry for taking a while to get back to you guys...no big snow till now and I was out of town too. We got almost a foot of snow in the Boston area and without running the fan last night the attic...
  7. well got the cellulose...still a bit too warm. ...

    well got the cellulose...still a bit too warm. Even with a gable fan running all night it only got down to 6 degrees warmer than the outside temp when I got up at 6am today. I guess the R6 (or 8 I...
  8. If you are in NE, who did your blown in...

    If you are in NE, who did your blown in cellulose? Anyone near Boston? Not a lot of contractors use cellulose it seems.
  9. I don't remember how tight the house was but the...

    I don't remember how tight the house was but the guys from Building Science who know it all tested it with their seal of approval. The ducts haven't been tested since being replaced though. I will...
  10. they do have styrofoam baffles but foam has...

    they do have styrofoam baffles but foam has seeped in and blocked quite a few, mostly those over the kneewall since it was such a long run.
  11. sounds like the same song and dance - "you only...

    sounds like the same song and dance - "you only needed x inches" not the 9 inches to achieve R30 code...Icynene is definitely >1.7/inch though...I guess the contractor didn't use Icynene? Was there...
  12. Bathroom vents being used don't seem to affect...

    Bathroom vents being used don't seem to affect the humidity up there so I think they are tight. We had a duct blaster done on the original ductwork that was here - but we replaced it and they...
  13. we actually had a blower door test on the house...

    we actually had a blower door test on the house at one point and it was tight by building science standards, so I don't think there is a void that was missed...i don't get any negative pressure...
  14. Attic temperature/ventilation - smart ideas needed

    Hi guys, while not quite HVAC - it is heat and ventilation related...

    I've been in this new home now for going on 3 winters and so far it hasn't been a big problem but we got hit with ice dams...
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    well enough of you put some fear in me I turned...

    well enough of you put some fear in me I turned off the boiler after we all showered today and don't need anymore hot water....thanks for the advice
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    Talked to the tech again locally and he said the...

    Talked to the tech again locally and he said the same thing, at 40 the pressure relief valve would have blown by now...thinks the guage may be faulty...nothing on floor to worry about at least. ...
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    pressue is 40

    pressue is 40
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    I'll go check the pressure and Fyi its only a 2...

    I'll go check the pressure and Fyi its only a 2 year old boiler.
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    I called my heating company today and they said...

    I called my heating company today and they said it could wait till the week...not an emergency the tech thought. It does appear that the mositure on the floor eminates from under where a copper pipe...
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    boiler leaking???

    Can an oil boiler leak water? I noticed water right around the base of the cinder block the boiler sits on...it looks like there is some sort of copper pipe coming out of the boiler where something...
  21. thanks so much mark...i'll get that jumpered! ...

    thanks so much mark...i'll get that jumpered! And I've been meaning to install a better stat so I might as well do that too. Good thing I asked as that's not enough air flow to let steam properly...
  22. Aprilaire suggested the return as there was no...

    Aprilaire suggested the return as there was no area in the supply duct that would allow for a straight run of 36" before elbows, dampers, etc. to allow for proper dispersion. Unless I put it on 1/3...
  23. 50% would be OK I would think. If i'm 3 tons at...

    50% would be OK I would think. If i'm 3 tons at 350CFM that's 1050 CFM. Split into 2 returns at 50% I guess that means its getting 262 CFM so close to the 300 they want. Guess if I turn dips up to...
  24. Its a TWE037. Not sure what we have outside now...

    Its a TWE037. Not sure what we have outside now but for heat season it doesn't matter as we use an aquacoil hydroair for heating. Its set for 350CFM now on the dips but that is what it blows at...
  25. I'm not home right now but the smaller 2.5 ton...

    I'm not home right now but the smaller 2.5 ton unit is a TWE031 VS unit - the one in question is the 3 ton version of this model. thanks...
  26. quick q on Trane TWE (and Aprilaire Humidifier)

    When the fan is "on" but not a heat/cooling call - what CFM per ton does the fan run at? I've just had an Aprilaire 1150 steam humidifier installed and it needs 300CFM to properly take the steam...
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    So the forced air ductwork warming up the attic...

    So the forced air ductwork warming up the attic is or is not the problem? I don't want to spend the money or make a mess up there by insulating the floor of the attic if I'll still have the problem...
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    So keepitsimple: do you think that fancontroller...

    So keepitsimple: do you think that fancontroller isn't safe or won't work?

    And to those discussing the insulation need, I have R6 insulated ductwork up there that radiates at 40 some degrees when...
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    what if the fan is just up there and turned on...

    what if the fan is just up there and turned on when ice dam conditions are present, what is the harm in using it then?
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    I actually found a controller some guy has made -...

    I actually found a controller some guy has made - fancontroller.com - seems like it would do the trick. And if I have a well sealed attic and hatch it shouldn't suck air from the house, just pull it...
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    actually the attic has foam insulation on floor -...

    actually the attic has foam insulation on floor - almost complete air barrier...all ductwork sealed as good as possible...won't roof heaters cost more and won't help remove heat load in summer when...
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    I was lucky last year and didn't have any ice...

    I was lucky last year and didn't have any ice dams given the winter we had in Boston. But my attic stays too warm. I've had a more free air flow ridge vent installed and when the HVAC system was...
  33. We had our upstairs AC ductwork and compressor...

    We had our upstairs AC ductwork and compressor replaced two weeks ago and the humidity problems we've had since the house was built a year ago have gone away. Humidity is now kept under 50% instead...
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    These guys were very good, I'm not knocking them...

    These guys were very good, I'm not knocking them at all - they appeared to install the ductwork in a very professional manner and sealed all the connections with mastic and tape, etc. It was a...
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    sadly I guess they will have to come, if I leave...

    sadly I guess they will have to come, if I leave it on Auto Fan its not a problem in the meantime - compressor just comes on when fan runs. And its the Trane version of the Honeywell stat I have to...
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    And I just tried to leave the fan ON but System...

    And I just tried to leave the fan ON but System OFF (no cool) and the compressor is on and blowing cool air!
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    Just got this installed over the week and in its...

    Just got this installed over the week and in its first day, it wasn't really hot enough to use it - we just had System Off and Fan on Circ. Strangely my wife was saying that the compressor was...
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    could someone explain briefly how a 2 stage...

    could someone explain briefly how a 2 stage system works and how the 2nd stage knows to kick in? thanks..
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    So all the DH output on the stats does is make...

    So all the DH output on the stats does is make sure the AH only runs at 80% when there is a cooling call until the humidity is achieved? But it won't help you at all when there is no cooling call?
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    I was referring to running a DH call when its 60...

    I was referring to running a DH call when its 60 out (it could be humid and 60 so no need for AC but the 80% speed would kick in). The installed thought that might damage the system. Not sure what...
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    Same dilema...I have a TWE031 2.5 AH and the...

    Same dilema...I have a TWE031 2.5 AH and the outdoor compressor is being replaced - they are downsizing it to 2 tons since 2.5 was oversized but luckily I have the VS AH to accomodate that.

    So the...
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    I was talking to an installed today and he...

    I was talking to an installed today and he recommended against doing this with the system since it could cause problems if there is a DH call and its like 60 outside - something about it would damage...
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    calling pstu

    How do you have your system wired? Separate wire to relay between R and BK on AH? Are you a 1 and 1 stage TWE? Thx
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    If I'm reading this right, if you want to add a...

    If I'm reading this right, if you want to add a stat with DH output like the Total Touch, you need to do more than have an electrician swap the stat? It sounds like you need a tech to run a wire...
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    So Nina in laymans terms does that mean when it...

    So Nina in laymans terms does that mean when it calls for dehumidify that it calls for slow speed not just a cooling call?
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    Which stat can run the Trane VS AH?

    Is there a stat out there that can run the Trane VS TWE Air Handlers at the 80% dehumidify mode found in the Comfort R ramp? I'd love to find a stat that could come on and just use that low speed if...
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    They are designing for .05 static pressure and...

    They are designing for .05 static pressure and used Man D in their program. They say the problem with my ductwork is design. It was sized correctly but for .1 static pressure and the design was...
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    what details shall I ask him to provide me? Its...

    what details shall I ask him to provide me? Its a significant chunk of change they are looking for to change out and enlarge return and add a supply to the foyer in total...more than buying a new...
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    yes to the last question, the front rooms stay...

    yes to the last question, the front rooms stay warmer/colder depending on the season than the rear bedrooms...I have asked him for a Man D to see why he recommends it. Essentially he says all the...
  50. Thread: reply

    by newhomeboston
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    yes to the last question, the front rooms stay...

    yes to the last question, the front rooms stay warmer/colder depending on the season than the rear bedrooms...I have asked him for a Man D to see why he recommends it. Essentially he says all the...
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