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  1. Thanks for all the replies. Beenthere, I also...

    Thanks for all the replies. Beenthere, I also thought it was a code violation to connect a garage to any forced air system. Strangely I have been assured that it is not here. Now, I'm more willing...
  2. Thanks for your reply, aircooled. Here's the...

    Thanks for your reply, aircooled. Here's the (admittedly complicated) story: 3 Floors, basement, garage, 2nd floor. Basement and 2nd floor are conditioned with both supply and return ducts. Garage...
  3. System Sizing: Trane Heat Pump Residential Zoning & New 3-Story 3-Car Garage

    The project: a 3 car garage (36 x 30) over a full conditioned basement with conditioned 2nd floor above the unconditioned garage. About 2000 sf of conditioned space, half above and half below the...
  4. Zoned XL19i Compressors Run In Test Mode But Not On Set Point Call

    Trane 3 ton XL19i, 2TWZ9036 two stage, dual compressor heat pump, TWE040 variable speed air handler, Trane residential zoning assembly ZSASSMAL0100, Master Scheduler Thermostat ZUSTATALMS10.

    Had...
  5. Thanks to all for the good news. The heat pump...

    Thanks to all for the good news. The heat pump was pressure tested at 150 psi for 16 hours. If that was sufficient to pressurize all components regardless of the 4-way valve setting, then it's a...
  6. 4-Way Valve: Can Both Directions Be Pressure Tested After Removing Factory Filters?

    After being told that one of our factory service valves leaked (preventing a “pump-down” and requiring full refrigerant recovery instead), we’ve become hardliners about pressure testing everything...
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    This is not the contractor from whom the...

    This is not the contractor from whom the equipment was purchased and who did the original install. Everything we need to have done by a new contractor is billed strictly on time and materials, which...
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    Emoney, the replacement filter-drier is a...

    Emoney, the replacement filter-drier is a dual-flow Sporlan heat pump filter. We have the box and instructions for it. The filter has double arrows on it pointing in both directions.

    After the...
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    (Sorry, accidental duplicate post removed)

    (Sorry, accidental duplicate post removed)
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    Thanks, Shophound. I'm glad to hear that the...

    Thanks, Shophound. I'm glad to hear that the fuzz is not likely from lack of nitrogen. It makes sense that oil is holding some type of dust in place on the inside of the pipe.

    The disassembled...
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    I didn't mean to use the word cost. I just...

    I didn't mean to use the word cost. I just wanted to clarify that with the refrigerant out, the labor to remove the factory filters should be reasonable. And I think you did confirm that.

    Thanks...
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    Thanks, JLADude. The refrigerant has already...

    Thanks, JLADude. The refrigerant has already been recovered from the system. They could not do a "pump-down" into the heat pump because they said one of the factory service valves would not hold.
    ...
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    Thanks, JLADude. The deposits are not black and...

    Thanks, JLADude. The deposits are not black and flaky, but look like fine sparkly dust suspended in an invisible spider web about 1/16" thick on the inside of the pipe.

    We are having a new...
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    Visual Signs Of Brazing W/O Nitrogen

    We're trying to determine if our original contractor used nitrogen during brazing.

    The air handler has been disconnected, and in the gas line near the original brazed joint there's a fuzzy deposit...
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    Thanks CT2 and Beenthere. That's about what I...

    Thanks CT2 and Beenthere. That's about what I figured. We'll just go with R22 for now. Can the leaky valves on the heat pump be easily replaced?
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    We are replacing our Trane TWE037 air handler...

    We are replacing our Trane TWE037 air handler with the TWE040 model because the 037’s coil is too small for our 3 ton XL19i heat pump. Our new contractor techs were back today to deal with the...
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    Thanks, BaldLoonie. That makes more sense. I...

    Thanks, BaldLoonie. That makes more sense. I was having trouble imagining that this air handler can’t go in both directions, since it shows up all over the place with Trane’s heat pumps (just not...
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    We’re replacing our variable speed TWE037E13FB1...

    We’re replacing our variable speed TWE037E13FB1 air handler with the TWE040E13FB2. Since we know that the 037 cannot be used with either Trane’s 2.5 or 3 ton XL19i model heat pumps, we’re trying to...
  19. Thanks mediaguy. I'm really thankful that these...

    Thanks mediaguy. I'm really thankful that these issues were clarified with everyone's help before we start making the choices on what we're replacing and what we're keeping.
  20. Special Ed, I'm not familiar with dynamic air...

    Special Ed, I'm not familiar with dynamic air cleaners. I'll do a search and see what I can learn about them. Thanks for taking the time to broaden our choices.
  21. Dash, you are absolutely correct about the air...

    Dash, you are absolutely correct about the air cleaner. I don't have my install and user's manual back, since the new contractor is still holding on to them. They're preparing their bid for...
  22. To Trane: thanks for the warning. I've been...

    To Trane: thanks for the warning. I've been getting a lot of hype about the Clean Effects filter from the Denver Trane office. They strongly encouraged me to upgrade to it from the electrostatic...
  23. Photo of utility room. Sorry for the imperfect...

    Photo of utility room. Sorry for the imperfect merge borders and angled perspective. The room is only 4 1/2 feet wide, so I couldn't get a straight on shot that would show much of the equipment....
  24. Dash, we do have the electrostatic filter with...

    Dash, we do have the electrostatic filter with high static pressure drop. We also have turning vanes in the return plenum. Our original contractor bid us a price on the plenums according to our...
  25. Thanks also to Kim, who snuck in there while I...

    Thanks also to Kim, who snuck in there while I was posting my reply.
  26. Moving the filter to the vertical part of the...

    Moving the filter to the vertical part of the return plenum will work. I just measured the space and we have plenty of room to add transitions between the filter and the existing plenum shaft. We...
  27. Because of a coil capacity mismatch between our...

    Because of a coil capacity mismatch between our Trane XL19i two compressor heat pump and the supposedly matched, but actually too small, variable speed air handler which we were sold by our original...
  28. Thanks, Baldloonie and Mark. My duct table, to...

    Thanks, Baldloonie and Mark. My duct table, to fit on one page, is a bit unclear. The dump can dump simultaneously to an 8" greenhouse floor diffuser, and to the basement hallways with a 5" ceiling...
  29. Swampfox, the Trane zoning controller and master...

    Swampfox, the Trane zoning controller and master thermostat allow us to open only zones we want to when the fan is set to continuous on. If one of the dip switches on the zone controller is set to...
  30. Though we hoped to get the system going while...

    Though we hoped to get the system going while still in cooling season, it didn't happen. Ductwork and wiring were completed in August. Then we lost three months of waiting for our contractor to make...
  31. Thanks again, JRBenny. That significantly...

    Thanks again, JRBenny. That significantly clarifies our choices. We were strongly considering the 2.5 ton heat pump possibility, because our entire utility room, plenums, etc. were designed and...
  32. Yes I did miss it, Dash. While I was composing...

    Yes I did miss it, Dash. While I was composing the message JRBenny jumped in and I missed it till just now. Thanks much to all. If we have a mismatch problem, we'll hope for a straightforward...
  33. Thanks again, Baldloonie and daversha. Yes, the...

    Thanks again, Baldloonie and daversha. Yes, the two small zones are set up to be able to call for the compressors. We have a bypass system with three options: (1) Trane Relief, where the...
  34. Thanks a lot, Baldloonie. If the air handler is...

    Thanks a lot, Baldloonie. If the air handler is the problem, is there any point in checking into whether a larger coil in the same box is available?
  35. Background of Previous Posts On This Subject: ...

    Background of Previous Posts On This Subject:

    All new equipment in first winter:

    Trane XL19i 2TWZ9036A 3 ton two compressor heat pump.
    Trane TWE037E13F variable speed air handler w/ strip heat...
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    Crozzy, your figures are pretty close to Trane's....

    Crozzy, your figures are pretty close to Trane's. For 3/8" liquid line sets, Trane's 7 oz. per 10 feet is not much different from Lennox's of 6 oz. per 10 feet.
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    Trane's service facts for 2TWZ9036A1000AC:...

    Trane's service facts for 2TWZ9036A1000AC:
    (Document 2TWZ9036-SF-3)
    7/8" & 3/8" diameter lines

    Tubing Additional
    Length Refrigerant
    20 feet 4 oz.
    30 feet 11 oz.
    40 feet 18 oz.
    50 feet 25...
  38. Replies
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    Before our ductwork was designed and installed we...

    Before our ductwork was designed and installed we went several rounds with JRBenny and others about the issues involved in lots of small zones with Trane zoning. As a result our ducts are set up to...
  39. Replies
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    Individual Zone Card Settings On Zone Board ...

    Individual Zone Card Settings On Zone Board

    All 6 zones are set to vote on turning on equipment, a 7th zone card is set as Bypass which dumps into our basement hallways.

    Each zone card has its...
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    Ok Bryan, I will check switches again. Here's all...

    Ok Bryan, I will check switches again. Here's all the switches and current settings on the zone controller panel boards:

    DSW (Current Switch Setting Shown In Capitals)

    1: OFF Heat Pump ...
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    Thanks, 2Hot and Inturmoil. If we don't hear...

    Thanks, 2Hot and Inturmoil. If we don't hear from the contractor tomorrow, we will be calling the contacts at Trane.
    Keep in mind that, as long as the sun shines, we're not freezing. So we're a...
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    The Trane factory charge was for 15 feet of line...

    The Trane factory charge was for 15 feet of line and we have about 37. Their chart shows it needed about a pound to compensate for the additional length. The guy doing the charging knew I knew...
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    Thanks, Inturmoil. I'll see if I can locate...

    Thanks, Inturmoil. I'll see if I can locate David Norman and ask if he has time to consult on this. Our charging process spanned about a month and a half and went like this:

    Us: Please come...
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    Thanks again, Too Tall. JRBenny has been very...

    Thanks again, Too Tall. JRBenny has been very helpful at many points in our process. He probably knows more than most of the Trane state reps I've spoken with. So perhaps we'll be fortunate...
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    I have no idea what pressures were. We were so...

    I have no idea what pressures were. We were so glad to finally get someone out here to charge the system after waiting for a month that we didn't think to get the details. Next time we will get all...
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    That’s what we thought at first, too. The master...

    That’s what we thought at first, too. The master zone controller stat has only Red, Blue for 24v hot/common and S1, S2 for data. The Y1, Y2 and W1, W2, W3 terminals are on the Trane zone controller...
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    Thanks Terry, and I would very much appreciate...

    Thanks Terry, and I would very much appreciate elaboration. We’ve been running the heat pump for about 6 weeks and I’ve been trying hard to check the performance of both the Y1 and Y2 stages. The...
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    Oh...

    OK, so that puts us back into the likelihood of thermal overload damage?
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    Thanks Crozzy

    Thanks, Crozzy. This info will make it a lot easier to talk our contractor into coming out here. I'm also glad to hear several possibilities that don't have to do with potential heat damage to the...
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    Thanks Bryan. The thermostats are Trane zoning...

    Thanks Bryan. The thermostats are Trane zoning system digital stats. We’ve seen two potentially relevant blink sequences. The first was the system controller fault led which was repeating the...
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