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Type: Posts; User: seandarcy

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  1. Replies
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    He did whatever he needed to do to determine the...

    He did whatever he needed to do to determine the static pressure. He determined static pressure then not estimated.

    And yes, I can ask him to test static and heat rise, but, as I understand it,...
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    302

    He estimates 0.4 currently. Reducing to tap 2...

    He estimates 0.4 currently. Reducing to tap 2 should give ~0.35+ .
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    Any reason not to reduce cfm ?

    I've got a 6 ton WF legend geo. It's primary use is maintaining 45 deg in a winter house used weekends. 2 zones. x13 ecm fan

    I've got a new hvac guy who's recommending reducing the cfm. He...
  4. Got hit with the stupid stick. 0.25 W/cfm, 2000...

    Got hit with the stupid stick. 0.25 W/cfm, 2000 cfm, 500 W-min, also 500 w-hr, or 0.5 kwr for 72000 btu , ~ 7 kwh/mmbtu. So at $0.15 /kwh, the air handler power costs about $1 / mmbtu. For an all-in...
  5. For an mmbtu of heat, we use an mcf of gas - $13...

    For an mmbtu of heat, we use an mcf of gas - $13 , and 580 kwh of power - at $0.10 / kwh - $58 , or total of $72 !!

    How did I screw this up?
  6. It's an X13 in a six-ton unit. When I look at air...

    It's an X13 in a six-ton unit. When I look at air handlers I see cfm/watt, or the inverse. So assume 0.25 W/cfm, and speeds of 2000 cfm, on a 6 ton air handler. So 500 watts/minute and I get 72 mbtu...
  7. Does AFUE include air handler electric load ?

    I'm trying to compare residential a geo unit with gas. But I can't figure out how to compare the efficiency. The issue is where is the air handler load, and is it material.

    For instance, lets...
  8. waterfurnace legend: digital flowmeter ??

    I've got a 6 ton waterfurnace legend with a vertical liquid flowmeter on the effluent. I'm told it's leaking slowly and I need to replace it.

    I'm also told I should switch to a digital flowmeter....
  9. Waterfurnace Preheat tank mis-installed : does it matter ?

    I have a 6 ton Waterfurnace Legend connected to a preheat tank. It was installed over a year ago. I've just realized, after looking at the Installation Manual that it wasn't installed at it was...
  10. I'm learning a huge amount, and I do appreciate ...

    I'm learning a huge amount, and I do appreciate all the comments.

    But I'm still confused: can I use the X13 (ECM?) motor from WF if I have a barometric bypass installed? I think I understand that...
  11. This is it. He's installing a barometric bypass....

    This is it. He's installing a barometric bypass. I had no clue that made any difference. And, he installed the barometric bypass yesterday!

    Is it difficult/costly to change a barometric by-pass to...
  12. It's not really a warranty issue. I assume both...

    It's not really a warranty issue. I assume both will work, though interestingly the WF site says that an ECM motor has an expected life of 15-18 years, compared to PSC of 10 -12. But, as I said, this...
  13. ECM or PSC blower for zoned WaterFurnace Legend?

    I've got an open-loop 6 ton WaterFurnace Legend at a summer house in Northeast Pa.

    I'll use cooling maybe a week a year. I keep the heat at 55-60 during the winter, except for 4-6 vacation...
  14. geothermal unit with variable speed compressor?

    I plan to install a geothermal in Northeast PA. Primarily heating, maybe 10% cooling. I'd been planning on a 5 ton single stage Waterfurnace unit.

    I've just looked at the new Copeland variable...
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    Concentric fitting for FHP -> Bruderus

    I'm trying to set up the desuperheater on an FHP ES061 GHP with a Bruderus indirect HW tank. The Bruderus tank has a 1 1/4" CW connection at the bottom, which also serves as the drain valve. HW out...
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    It was the rep for the Florida Heat Pump CT ...

    It was the rep for the Florida Heat Pump CT _distributor_.

    He did no tests. He didn't even open up the unit.

    He asked the contractor to install a flow meter on the ground loop. Said he'd "talk...
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    >>Have the installer check the Total External...

    >>Have the installer check the Total External Static Pressure (TESP).

    >>With a 6 ton unit on a (retrofit?), possible ductwork is undersized for the >>airflow capacity of the heat pump.

    Will...
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    >>Those pressure are way to high for Geo-thermal...

    >>Those pressure are way to high for Geo-thermal unit,

    Page 19 of the ES install manual - Operating Pressures and Temperatures ( R-410A) shows for 50 water temp, stage 1 suction pressure of...
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    >>whats your water pressure set at? This hp...

    >>whats your water pressure set at?

    This hp generates forced hot air. So there's water only on the ground loop side. While the contractor put a temp and pressure gauge on the incoming ground loop,...
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    geo heat pump really whines

    I've just installed a 6-ton Florida Heat Pump ES061 ( with a scroll compressor ) unit in CT, on a ground loop.

    It's really noisy, and located right under the family room. In particular, it has a...
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