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  1. Replies
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    Following up for posterity - it looks this has...

    Following up for posterity - it looks this has been resolved.

    Last March they called out the big guns and I had 5 different guys standing around in my basement BSing about what might be wrong.
    ...
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    Well, the saga continues. I haven't had them...

    Well, the saga continues. I haven't had them back out yet, but last night while the furnace was running in High Fire after experiencing another Low Pressure fault, I noticed this:

    336941

    The...
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    Ted, I just noticed this comment.. is there any...

    Ted, I just noticed this comment.. is there any point to clearing the codes other than avoiding any confusion about what happened before or after the remediation steps? I've been letting them...
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    Thanks Comfortdoc, that's great info. I...

    Thanks Comfortdoc, that's great info.

    I don't want to be a pain, but do you know where I could find something to back that up? I would like to have something more than "some guy on the internet...
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    From looking at the pipes, it doesn't seem...

    From looking at the pipes, it doesn't seem likely, although I guess if there's a restriction at the vent end it's possible.
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    I wouldn't think the house is super tight, it was...

    I wouldn't think the house is super tight, it was built in 1944.

    Not sure exactly what you mean by "where"... it's in that vent kit I linked earlier, on the middle of the side of the house, a...
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    Well that's a good point - I've never been...

    Well that's a good point - I've never been super-clear on exactly what the Low pressure code is referring to, but I thought it had to do with pressure in the combustion chamber (i.e. pressure from...
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    I've considered the wind possibility but there...

    I've considered the wind possibility but there doesn't seem to be any correlation between windy days and faults.

    The vent kit looks like this: ...
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    Thanks Ted, this is an intriguing theory. I...

    Thanks Ted, this is an intriguing theory. I believe that the CB was new when the furnace was installed because we moved the furnace from the location of the previous one, and because the previous...
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    Thanks for the replies. I'm in Portland, OR. ...

    Thanks for the replies.

    I'm in Portland, OR.

    Can you elaborate on exactly what a CO/Combustion Efficiency expert would do? And how I would find one?

    As for saving $, I'm not sure they...
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    Carrier 59MN7 with multiple faults

    Hey all, I'm returning for your advice on how best to resolve some issues with my furnace (and maybe my contractor).

    About a year ago, I had this furnace installed after doing quite a bit of...
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    Thanks for the replies. Is the consensus...

    Thanks for the replies.

    Is the consensus still that the ignition faults are normal now that the furnace has had time to learn?

    The stat records that the low pressure issue has occurred 8...
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    really, no ideas?

    really, no ideas?
  14. Replies
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    So a while back I noticed the furnace running in...

    So a while back I noticed the furnace running in high-fire when it probably shouldn't have been. I checked the status codes and saw "32-low pressure switch open" logged just a few minutes before. ...
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    Sorry for the slow reply. It looks like I have...

    Sorry for the slow reply.

    It looks like I have a Diversitech CP-22 condensate pump.

    Any thoughts on the relative noise level of this pump, and/or installation considerations that might make it...
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    Good to know, thanks. Any other spurious...

    Good to know, thanks.

    Any other spurious codes you can think of that are considered normal?

    And any advice on quieting down the pump? :)
  17. Replies
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    Carrier 59MN7 "34-ignition fault"... normal?

    Hey all - my recently-installed Carrier 59MN7 has been working great, my only complaint is the condensate pump is a bit on the loud side...

    BUT: being the nosy geek that I am, I found my way into...
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    Thanks again to all who contribute their...

    Thanks again to all who contribute their knowledge and expertise around here - this forum is really a great resource.

    My install is finally done and it sure is a nice upgrade.

    I ended up...
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    Thanks again for the replies. So it sounds...

    Thanks again for the replies.

    So it sounds like, after moving the furnace, I will be pretty spot-on for supplies (22x7 times two, each feeding 4 supplies) but pretty sad for return flow.

    I...
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    And if not? (I'm not adding AC).

    And if not? (I'm not adding AC).
  21. Replies
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    Cool, so I'm feeling pretty good about all...

    Cool, so I'm feeling pretty good about all this... except for the original question about whether I have big enough returns. :)

    If the filter needs to be 530-odd sq in, would I be on the right...
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    Thanks for the reply. Just to make sure I'm...

    Thanks for the reply.

    Just to make sure I'm following; are you saying that my ductwork as described is probably restricted (on the return side?) and higher than .12"? Not clear on what you mean...
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    So maybe the .12 is the max ESP or worst-case...

    So maybe the .12 is the max ESP or worst-case scenario that the furnace is certified for?

    Udarrell: I'm confused by this statement:"If the SP is actually closer to 0.5", then the CFM could be more...
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    I read this doc to mean 1075 cfm @ .12 in wc. Is...

    I read this doc to mean 1075 cfm @ .12 in wc. Is Certified External Static different than Total?
    http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/59mn7a-02pd.pdf

    After I...
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    Thanks for the replies guys. More details: my...

    Thanks for the replies guys.

    More details: my house is ~850sqft main, 250 finished attic, 250 semi-finished basement built in 1944. Upgraded insulation, doors and windows. Mild heating climate...
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    Cold air return capacity

    Hey all - quick question:

    How much can one of these things flow?

    http://imageshack.us/photo/my-images/24/img00126201111050908.jpg

    The story: I'm looking into replacing my old oil furnace...
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    Thanks for the replies. Genduct - I'm...

    Thanks for the replies.

    Genduct - I'm intrigued by the Quietside combi. I know actual pricing isn't allowed, but how would the relative cost compare to a HE gas furnace install(plus a water...
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    Hi all - thanks for the replies. Yes Travis you...

    Hi all - thanks for the replies. Yes Travis you got me pegged (probably not too many Tad's on your roster, and I did admit to finding you here to begin with!). No offense intended to you or your...
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    Variable speed blower in inadequate ductwork

    Greetings all - I'm researching the replacement of my ancient forced-air oil furnace with a new high-efficiency gas model with variable speed blower and 2-stage burner. No AC.

    The house is a...
  30. I assume that's directed at me. :) Here in...

    I assume that's directed at me. :)

    Here in Portland(unlike pretty much the entire rest of the country) we've been having the coolest summer in recent memory. I actually just last night took my...
  31. Thanks for the replies guys. Bummer - there...

    Thanks for the replies guys.

    Bummer - there doesn't seem to be a Westinghouse dealer for 100s of miles from Portland, OR.

    MChild, interesting point about the DC blower. I can't seem to find...
  32. Hey all - sorry to resurrect this ancient thread,...

    Hey all - sorry to resurrect this ancient thread, but since I can't find a way to send a private message, this seems to be the only way to bug 98niff for more info on how his Daikin ducted install...
  33. well at this point it's not a big deal... as long...

    well at this point it's not a big deal... as long as I don't have to go down there and reset it every day or it fails to light even after the reset I think I will just carry on until it gets...
  34. Thanks for the replies guys. I should have...

    Thanks for the replies guys.

    I should have mentioned, there's plenty of oil in the tank.

    I *did* mention, I had it serviced in the fall, and I would hope that he would have done everything...
  35. Ancient oil furnace, occasional ignition failure

    Greetings all -

    I've come to ask advice about my verrrrry old oil furnace. I don't know much about it other than it's labeled American Standard and is probably 40 years old at least.

    To...
  36. Thanks! Re: Efficiency - would I be right in...

    Thanks!

    Re: Efficiency - would I be right in thinking that a zoned VRV split system with HSPF of 8 would probably cost less to operate than a zoned conventional HP with a HSPF of, say, 9, because,...
  37. I see that the ducted units draw significantly...

    I see that the ducted units draw significantly more power, so that may explain it.

    Does the AC blower mean that the ducted unit isn't variable speed?

    thanks,
  38. the Daiken units described in this brochure are...

    the Daiken units described in this brochure are the 2MXS18GVJU and 4MXS32GVJU outdoor units. In the "Certified Efficiency Performance Values" table, for the 2MX it states SEER/HSPF of 19.5/9.2 for...
  39. Following up - I found a knowledgeable Daiken...

    Following up - I found a knowledgeable Daiken contractor and had him out for a look-see. We ended up on a 3-zone ducted split system - 1 for the main floor main rooms, 1 for the 2 bedrooms on the...
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    Dealing with asbestos taped ducts

    Greetings knowledgable pros - I'm looking into converting my decades-old forced-air oil furnace to a mini-split heat pump. The house was built in 1944.

    While talking over the job with one of the...
  41. Thanks once again for the helpful and informative...

    Thanks once again for the helpful and informative replies (and apologies to 98niff for hijacking your thread!)

    It seems to me that the inverter tech is the wave of the future, and I don't want to...
  42. Thanks for the quick replies guys. So I gather...

    Thanks for the quick replies guys.

    So I gather from your comments that these inverter systems are fairly expensive? I just got quoted over 10k for a 2.5 ton Trane with electric backup... but I...
  43. Any updates on Residential inverter HPs?

    Hello all, I've been reading this thread with great interest. I'm investigating the possibility of converting my ancient forced-air oil furnace to a heat pump, and i'm intrigued by the inverter...
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