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  1. Replies
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    What does LTCO and BP mean?

    Hi,

    I know that LTCO is Low Temperature Cut Off and BP is Balance Point. But what excatly are they and what do they do with regards to a heat pump.

    The aux heat on my set up is controlled by...
  2. Replies
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    958

    I agree. His reply is pretty generic: "The panel...

    I agree. His reply is pretty generic:
    "The panel is compatible with most heat pump systems, make sure you do not use heat pump thermostats."

    The "most" is concerning to me.

    I tried installing...
  3. Replies
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    958

    Also, I emailed Robertshaw and asked them if this...

    Also, I emailed Robertshaw and asked them if this zone controller was compatiable with my heat pump and they said yes.

    Is there any benefit in upgrading to a Honeywell HZ332?
  4. Replies
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    I'm really frustated with this whole situtation....

    I'm really frustated with this whole situtation. After spending alot of money on a heating system that isn't preforming like I think it should.

    Please tell me if this seems right to you? This...
  5. Replies
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    My installer says that the pump controlles the...

    My installer says that the pump controlles the staging, not the zone controller. What else does the zone controller do besides open and close the dampers?
  6. Replies
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    Right equipment

    Hi everyone,

    I have a Luxaire HL8B048F1 heat pump with electric backup heat. My house is set up for two zones and my zone controller is a Robertshaw 2701-006. I have two Honeywell Visionpro 8000...
  7. Replies
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    1,778

    The contractor had done another quote for a...

    The contractor had done another quote for a friend of mine and both his and mine work out to be 9.5 btu loss per hour per sq foot. So I'm curious if that is his rule of thumb or is it a coincidence....
  8. Replies
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    I checked the model numbers last night. The pump...

    I checked the model numbers last night. The pump is HL8B048F1C. The air handler is AVL48D3XH21CA.
  9. Replies
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    The ductwork is in the basement and it's exposed....

    The ductwork is in the basement and it's exposed. The basement is on it's own zone as well. The basement zone never calls for heat due to the exposed ductwork. There is no issue with the building...
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    I'm at work now and don't have the model #'s with...

    I'm at work now and don't have the model #'s with me. I'll post them when I get home.

    The system is running continuously, only stopping for a defrost cycle. Which last night was about once per...
  11. Replies
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    Yea, I know. And that's why I'm concerned. Last...

    Yea, I know. And that's why I'm concerned. Last night it was 25f and 15kw (51,000 btu) of heat going along with the 48,000 btu from the heat pump. Maybe a little less due to the temperature. 99,000...
  12. Replies
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    1,778

    I don't mean aux heat. I mean the second stage of...

    I don't mean aux heat. I mean the second stage of the heat pump.
  13. Replies
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    Thanks for the responses guys! The house is...

    Thanks for the responses guys!

    The house is 2x6 wall construction with R-20 batt insulation in the walls, ceiling is R-50 blown in and windows are low-e coated with argon gas.

    The first step...
  14. Replies
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    Thinking heat pump undersized

    Hi there,

    I'm new to this forum and this is my first post.

    I have a new house and I acted as the general contractor during the build. We moved in in June of 2011. I decided to have a Luxaire...
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