Type: Posts; User: NBeener
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I couldn't GET to the exterior wall of my basement ... until now.
The 6" duct that appeared to head FROM a trunk line TO the outside ... does NOT.
It DOES make a last minute 90...
Okay. I can see what you mean.
BUT ... before the basement was even poured on this house ... the HVAC contractor and I had worked out the particulars for what the HVAC system was to look like.
Plenty of it.
NICE and hot :)
I mean ... :(
I have to guess here, but ... I'm 90% sure it's a zoned supply.
That picture is of one of the three trunks that come off the furnace.
ON the "trunks," on EACH side OF the furnace, are the...
Ahhh. That would be good, AND would mean that it doesn't HAVE to introduce cold/hot, dry air into the system.
Far as I can tell, though, the one that DOES run into the system ... only goes into...
There are actually TWO mystery (to me, at least) ducts ... and ... I may have to explore a bit more ;)
In peeking around in my basement ... there is another 6" duct .... open on its interior end (between the joists. It simply terminates in a 6" hole), and ... extending to the exterior wall...
I WOULD like to suggest an alternative explanation:
I have an immune dysfunction, called an "IgG Subclass Deficiency." It leaves me EXTREMELY susceptible to sinus infections, for which I have...
Got one ;)
And -- as well he SHOULD have -- my HVAC guy chuckled at it ... until, that is ... it lined up perfectly with his expensive Fluke thermometer/hygrometer ;-)
I haven't watched the...
Incidentally .... egads:
My mother WORKS in Long Beach -- near you, from what your posts say.
If you met her, you'd find her to be an amazing, inspirational, and rather incredible woman.
Again ... thank you.
Disclaimer: I'll be the first (well ... maybe not ;)) to admit that I know enough to be dangerous, but ... I had to learn a fair bit of this to work out kinks in my dust...
You pop the top.
Everything comes out from the top.
I guess I'm far less concerned about the gap between the ducts than about them using 180* turns, when 45s are recommended.
But ... I don't know what effect that (being too close together) would...
egads: you started off well, but -- once you got into personal insults -- you simply lost me.
And ... my mother ?
I'd like to -- again -- thank everybody ELSE who has chimed in on these issues...
When the HVAC installer used his (not sure of the term) TrueFlow Flow Meter, as I recall, the reading was just shy of 1060CFM, DURING the HIGH stage furnace status test.
And ... from the brochure...
commerce48: okay. Thank you.
The only part of that where I can address anything IS: you're right: it's COMFORT or EFFICIENCY.
EFFICIENCY is how you max out your SEER and AFUE, but gives...
Sure looks to me as though it allows you to set the maximum airflow limit for each zone.
I may simply not understand what "an 80k input needing 1200cfm" means.
If there ARE airflow limits set...
In the "Zoning Checkout" on the Advanced setup menus ....
I was afraid somebody was going to ask that. He said it's a setting in the "Advanced" setup menus.
I've got the "complete" Infinity Control manual. I'll take a look.
What I DO know,...
Also, I think -- at the moment -- it's a wide open question WHAT I need.
Since I have X amount of fresh air -- unheated, uncooled, and unhumidified -- being sucked INTO the system through that 6"...
Still trying to figure this one out, though:
The 60 maxes out at 1070 CFM
The 80 maxes out at 1220 CFM
From Day One, the HVAC guy set my T-stat so that the maximum CFM that COULD be reached...
No to the "hybrid heat," if THIS is what you mean:
What I DO have:
Straight 24ANA a/c
58MVC furnace, and ......
Is it ... THIS ?
I'm guessing that .... from the model of coil ... YOU can estimate...
Let me say, again, a couple things:
I'm very grateful for your participation in this discussion
I think everything you've said DOES make sense, and IS moving this situation forward, and...
With NO disrespect to my HVAC installer, I have NOT been willing to ignore the Infinity system's numbers.
And you just gave me another reason why I shouldn't.
I will put this [your...
Another pic -- 6" duct entering drop:
Another case of "This IS getting interesting !"
Here are pics of that 6" duct. It's a straight shot from the outside into the (is it called a "drop ?")
Their notes say
0.61" total with manometer
tedkidd: lemme' snap a few pics of that 6" insulated duct I'm talking about. I know it runs TO the...
This sounds important.
So ... when I say that we ran a test by pumping max (1025CFM) airflow through a single zone, and achieved 1.26"WC ... the system SHOULD have ROLLED BACK the...
The HVAC guy tested the main zone (roughly 1000sf), at HIGH stage, for 20 minutes, with the other zones' dampers completely shut.
At 1025CFM, through the single zone, the SP (on the...
I'm not sure I understand the first part.
Okay. If you live in a moderate climate, with reasonable humidity, and -- say -- have five in your family (5 showers a day, plus laundry), then ......
shophound: The only thing (I can think of) that could lead somebody to ask if I have big LEAKS in my house would be the difficulty we're having in maintaining the RH set-point of 45%.
As long as there are more things to be checked, I feel like I'm still in a position to make things better :)
Assuming, though, that the range hood duct damper will NOT...
That was sarcasm, on my part. I totally agree that they're not only NOT silly, but ... I suspect ... were NOT properly used, in the first blower-door test.
About 1,950sf. Two...
One other "incidentally," that gives more color to this whole picture:
The builder DID contract an ME. The ME did her load calcs, equipment recommendations, and duct size calc's.
HER next step...
By the way ...
The Broan Range Hood LOOKS LIKE it uses 6" round duct.
I have no idea whether this hood has any kind of damper/check valve sort of thing, to ensure that ... when it's not in use...
Thank you much !
Northern Colorado. Design parameters (heating) are:
As a practical matter, though, it gets REALLY (10% or below) dry, here.
And THIS one is pretty easy:
The original system was installed (no input by me) with a 9GPD truSTEAM unit. The first one failed in 6wks.
The 2nd one failed about 16 months later.
Sure I could.
If there were any indication that the larger furnace was causing ANY of the issues.
And ... with good reason ... I'd expect the contractor to be the first to point it out, IF that...
I wish I didn't agree with you [particularly, knowing that my HVAC guy has been tuning into my threads ;)] but ... I'd guess you're right.
They seemed to follow the 58MVC's guidelines _about_ tube...
Same with the CC&R's (Covenants, Conditions, and Restrictions) of the HOA (Homeowners' Association), where I live.
No comment :(
If you need any background, the long story is right here ;)
But ... today's question is ....
It seems that Carrier "derives," "extrapolates," or "calculates" the Static Pressure readings that...
With posts (can't see my expressions), it's hard to know this, but ... I just have to say ... I like and respect our HVAC installer.
I'm also pretty sure that he didn't know the ACH of our...
No. We don't have one.
I asked about one, while discussing the HVAC system with the contractor. It was his feeling that it wasn't necessary.
I'm not so sure. I can't know whether he had any...
Originally, I wanted an all-Carrier system, so ... I WILL take a look at that.
Doesn't seem like leakage is our problem. The HVAC contractor says our blower-door test showed...
I've heard very good things about the AprilAire models. It's likely I'd either go with one of those OR the Autoflo unit.
I'm hearing that -- if you cannot heat the water --...
Thanks so much !
Are you running the Infinity Control ? Do you have any reason to believe that there's a difference between the static pressure reported by the...
The HVAC installer told me that he is aware of this thread. We met for several hours, yesterday. With luck, the installer will not take offense to the existence OF this thread, and realize that --...
Thank you, George.
I e-mailed the builder, to get an update on the status of the engineer's report.
And ... with luck ... find out if she's planning to actually evaluate the house, as it is,...
Thanks for your input.
My house is 1,900 feet PER LEVEL, times TWO levels -- all conditioned space.
Since both levels have 9' ceilings, my house is 34,000 CUBIC feet.
In two to...