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Type: Posts; User: Norm01

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  1. Replies
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    Thanks for the input guys. The static pressure...

    Thanks for the input guys. The static pressure is given by the Evolution thermostat so it may or may not coincide with the way the pro's measure it. I have a 3Ton system with a matched 4Ton coil,...
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    Thanks, I blocked it temporarily and noticed the...

    Thanks, I blocked it temporarily and noticed the static went down by about .02. What is the ratio needed from return main trunk to return grill size, is it 1:1. My return is 12x24 or 288 sq.in. If...
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    Blocking air returns / static pressure

    I have a brand new Bryant 289B with Evolution thermostat. We are just in a heat wave and my second floor of my house is staying a few degrees warmer than my first. Common problem I know. My static...
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    Thanks guys, I'll run it down to 10F. As a side...

    Thanks guys, I'll run it down to 10F. As a side note I also had installed a Toshiba/Carrier mini-split 9000Btu HP in a bonus room over my garage and it delivers 108F with outside temps of 10F. I am...
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    618

    Cost / efficiency calculation

    I had a new Bryant system installed this fall and I am wondering if there is a program or some way to calculate the optimum cut off point of the HP. Here are some details:

    Furnace 355CAV042080...
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    Evolution Thermostat

    Can anyone confirm the latest software revision number on the Evolution thermostat. The Bryant website links to HVAC Partners to which I do not have access.
  7. My mini-split maintains set point without issues....

    My mini-split maintains set point without issues. Not sure what's going on with yours. Check the manual as some units allow you to input a temperature offset. I wonder if your installer may of...
  8. No need to run AC, just run your fan on high.

    No need to run AC, just run your fan on high.
  9. Did you get the Infinity thermostat, if you did...

    Did you get the Infinity thermostat, if you did what is your static pressure.
  10. With a little research on the net you will find...

    With a little research on the net you will find the Carrier AHRI excel spreadsheet that will answer all you questions.
  11. Replies
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    Let me just share my story with you. My house...

    Let me just share my story with you. My house had a 125kBtu furnace and a 3.5T HP. After a lot of research on this site I paid for an independent manual-J. Results came back at 60KBtu and 2T HP.
  12. Thread: Noisy Register

    by Norm01
    Replies
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    1,728

    This is what I would do.

    This is what I would do.
  13. I think there is something wrong with your ACH...

    I think there is something wrong with your ACH number. The link provided by freeagent shows that a house with ACH below 5 is considered tight. I had my energy audit done and the tech said she never...
  14. Replies
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    970

    Not too late and he will do it the way it was...

    Not too late and he will do it the way it was however he did not recommend it. Thanks for the reply's.
  15. Replies
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    970

    Installing gas furnace with blower, return comes...

    Installing gas furnace with blower, return comes in the side of the furnace and plenum on top.
  16. Replies
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    970

    HP coil in return duct

    I am having a gas furnace and heat pump installed. This is a northern climate house so the furnace is in the basement with a plenum and trunks. The old furnace had the HP coil above the furnace in...
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    Return duct and filter size

    One of the contractors quoting on my new furnace plus heat pump installation wants to increase my return duct, supply seems fine. The other contractor makes no mention of it. The system going in...
  18. Thread: COP vs HSPF

    by Norm01
    Replies
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    1,496

    Thanks ACBD, that's good advice. Will do this...

    Thanks ACBD, that's good advice. Will do this tonight as I have all the numbers, I even have the balance point charts.
  19. Thread: COP vs HSPF

    by Norm01
    Replies
    3
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    1,496

    COP vs HSPF

    Which is more important. I am looking at two heat pumps:
    1- HSPF 12.5 / COP 17F 2.46
    2- HSPF 8.9 / COP 17F 2.7

    I was very surprised that the lower HSPF HP actually had a better cold weather...
  20. Replies
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    1,156

    Thank you sir :cheers:

    Thank you sir :cheers:
  21. Thread: Bryant 289B

    by Norm01
    Replies
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    353

    Bryant 289B

    I'm having trouble figuring out what the Bryant 289B two stage minimum cooling and CFM are. If I'm reading it right the high stage is 35000Btu and the low 30200. That doesn't seem like a big...
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    Here is why I was asking, bare with me the post...

    Here is why I was asking, bare with me the post will be a little long however it makes for an interesting debate.

    Heat-loss calculated to 56,300 Btu at -14.8F (Montreal)
    Heat-gain calculated to...
  23. Replies
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    1,156

    Yes I did mean heat-loss, winter load.

    Yes I did mean heat-loss, winter load.
  24. Replies
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    I don't understand how you do this in Ontario,...

    I don't understand how you do this in Ontario, your avg house heat load must be 80KBtu. Surely you don't install heat pumps for 80kBtu??
  25. Replies
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    1,156

    Keep in mind I'm a homeowner not a pro but all my...

    Keep in mind I'm a homeowner not a pro but all my research points to HP= 125% of cooling load (heat gain)
  26. Replies
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    1,156

    Sizing HP to heat load

    Have you ever sized a heat pump to the heat load of a house and if so under what circumstances. I'm thinking this may make sense in certain areas of North America.
  27. Replies
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    Look for a proper answer from the Pro's however I...

    Look for a proper answer from the Pro's however I am going through the same thing right now and trying to get each zone designed to the minimum of furnace or HP capacity so the system does not need...
  28. I don't understand how a proper load calc can be...

    I don't understand how a proper load calc can be done without a blower test door and agree with you, too much variance on this one item alone. I did my own load calcs with two different programs and...
  29. Replies
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    They have been closed for construction shut down...

    They have been closed for construction shut down these last two weeks however this is exactly what I will ask them on Monday. I followed what I felt was the right path, and I don't regret it however...
  30. Replies
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    3,452

    As a homeowner I'll take tedkidd any day. I am...

    As a homeowner I'll take tedkidd any day. I am fighting this type of attitude in my area as we speak. I need a new furnace and HP. Spent considerable money for an engineering firm to do a proper...
  31. Replies
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    Thanks motoguy, I had checked their website but...

    Thanks motoguy, I had checked their website but couldn't figure it out. The B is a two stag and actually seems on paper to be more efficient than the modulating one however I am going to zone my...
  32. Replies
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    1,169

    Carrier MVC MVB difference

    I am having trouble telling from the spec sheets the difference between the MVC and MVB line of Carrier furnaces. I have two contractor quotes with same size furnaces only one is a C and the other a...
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    Carrier damper preferences

    For the pro's when zoning using the Infinity system do you have a preference to the slip in damper or the square or round damper that comes with a duct section. I realize the slip in is more for a...
  34. Replies
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    The new Carrier Greenspeed achieves an HSPF of...

    The new Carrier Greenspeed achieves an HSPF of 13.5 in zone 4.
  35. Replies
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    Yup, would be turning to teddy bear on that one. ...

    Yup, would be turning to teddy bear on that one. I'm hoping it's a reasonable compromise and something like 36kBtu. Will see. Thanks.
  36. Replies
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    I intend on asking the engineer what my heating...

    I intend on asking the engineer what my heating load is at 10F, this is the temperature at which my Hydro switches me over to gas due to my dual rate. I Think this will be a good indication of the...
  37. Replies
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    My understanding is that around here they size a...

    My understanding is that around here they size a heat pump to 125% of cooling load. I agree that I cannot see a 2T HP keep this house warm at 10F outside. I am waiting for vacations to end and need...
  38. Replies
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    2,061

    I'm in Montreal, this will be a heat pump and...

    I'm in Montreal, this will be a heat pump and propane furnace. I'm on dual energy from Hydro which automatically switches my equipment from heat pump electric to propane furnace around 9F and lower.
  39. Replies
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    3000sq.ft, if you add basement and attached...

    3000sq.ft, if you add basement and attached garage the total is 5000 so garage and basement are 2000.
  40. Replies
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    teddy bear, i have followed many of your posts...

    teddy bear, i have followed many of your posts and appreciate your advice. My manual-J put cooling at 19k or so, the engineering firm spec'd the HP to 125% of that so it a little over 24k. This is...
  41. Replies
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    It does and that's what scares me. Keep in mind...

    It does and that's what scares me. Keep in mind though I am in Montreal and my house is extremely air tight with R-40 insulation walls and ceiling. The basic question is follow the engineers...
  42. Replies
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    Not sure the old rule of thumb is still true. A...

    Not sure the old rule of thumb is still true. A contractor bid on a 80k at 2000cfm and another told me 60 and 80 have the same blower speed, different HP I think.
  43. Replies
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    2,061

    Oversizing multistage

    Are you Pro's less worried about oversizing with multistage equipment. Does it bring on other issues. I've submitted a few questions along these lines but basically I have a 3000sq.ft. living space...
  44. Replies
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    For free you could try HOT2000 from NRCan. This...

    For free you could try HOT2000 from NRCan. This is a Canadian government website. The program seems more detailed than many I have seen and it does have U.S. Weather data.
  45. Replies
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    I am asking them for a more detailed report, a...

    I am asking them for a more detailed report, a graph of load vs outside temp would be great. Montreal's design temp must not be extremely low so I doubt if my heating load is 56k that 24k would...
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    Design Temp for Montreal

    Does anyone know the design temp for Montreal.

    I have an interesting question. Keep in mind I heat with a heat pump and propane. Propane is very expensive and I have dual rate electricity, at...
  47. Thread: Minimum CFM??

    by Norm01
    Replies
    20
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    2,190

    The contractors concern is he feels the volume of...

    The contractors concern is he feels the volume of my house requires 2000cfm for whatever reason.

    I believe my ducts to be able to handle 1460cfm.

    The engineers did not specify an HVAC air...
  48. Replies
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    770

    Greg, I'm no expert but proper load sizing,...

    Greg, I'm no expert but proper load sizing, blower door test, seal the leeks, new equipment and zoning may solve your issue without touching the ducts assuming enough is exposed near the furnace to...
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    770

    We are in the same boat. I also live in La Belle...

    We are in the same boat. I also live in La Belle Province and could not find a contractor to do a proper load calc which in my opinion is essential. I ended up going through the government...
  50. Thread: Minimum CFM??

    by Norm01
    Replies
    20
    Views
    2,190

    Not sure what your question is. The ACH number I...

    Not sure what your question is. The ACH number I quoted is not related to the HVAC, it's related to the house leakage rate as determined by the blower test door.
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