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@Ontario

My opinion.

mpoon(MP)
Your 1st post description is different then the second, 1st post you say it is cold air, short cycle, it sounds some thing is wrong.

However. The 2nd post description "感觉风和以前比，没有那么热了，但用气量非但没减少，反而增多了" sounds normal. New furnace has New Motor. New Blower, it have more power to move air into the room, when there is more air volume pass through the furnace heat exchange, then more heat will be carry away, if the burner burning only small amount of gas which the burner may not have enough time to created more BTU, that is why you feel the air is not as hot as the old one
(#5732006@0)
Last Updated: 2009-12-7
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Replies, comments and Discussions:

  • 枫下家园 / 美丽家居 / 高效暖炉问题： 1.shortcycle 严重，吹两分钟，风还没热呢，就停了。有时感觉甚至是冷风。2.发觉一点也不省气，昨天就走了20个字。大伙有没有同样的问题？会是安装问题吗？谢谢。 -ingridchao(Ingrid); 2009-12-6 (#5729439@0)
    • If you can, open the cover. Locate the Controller, it should have "Fault Code" display with a Flashing LED, count it how many flashes, then look at the label in the panel, it has Fault Code definition,which tells the possible problem -mpoon(MP); 2009-12-6 (#5729474@0)
      • 多谢回答， 暖炉应该不是FAULT状态。这个是几天前刚换的高效的暖炉，感觉风和以前比，没有那么热了，但用气量非但没减少，反而增多了。很不解。 -ingridchao(Ingrid); 2009-12-6 (#5730362@0)
        • can you pm what model you installed? which company did installation for you ? I'm thinking of replacing a high efficiency furnace now, haven't decided which one go for .... -andyg(dragonone); 2009-12-7 (#5730730@0)
          • Sorry, I do not want to PM you my furnance info yet, as at this point, the cause may not be the furnace itself. -ingridchao(Ingrid); 2009-12-7 (#5732678@0)
        • 可能换错了，你的高效炉子可能是烧气效率高，发热效率低的那种。应该换烧气效率低，发热效率高的那种才对。 -sharkbait(nemo); 2009-12-7 (#5730865@0)
          • 这两种有什么区别啊？不都是叫high efficeincy furnance 吗？如何区别是高效烧气，还是高效发热啊？ -ingridchao(Ingrid); 2009-12-7 (#5732682@0)
        • My opinion. -mpoon(MP); 2009-12-7 {608} (#5732006@0)
          Your 1st post description is different then the second, 1st post you say it is cold air, short cycle, it sounds some thing is wrong.

          However. The 2nd post description "感觉风和以前比，没有那么热了，但用气量非但没减少，反而增多了" sounds normal. New furnace has New Motor. New Blower, it have more power to move air into the room, when there is more air volume pass through the furnace heat exchange, then more heat will be carry away, if the burner burning only small amount of gas which the burner may not have enough time to created more BTU, that is why you feel the air is not as hot as the old one
          • 多谢你的回复。是我的描述不够准确。我认为只加热两分钟就停了，是shortcircle.感觉有风在吹，但不热。风扇在火苗停止后，再吹两分钟才停，这两分钟感觉就是凉风了。我有些怀疑是BTU没有选对。可能选大了，造成了shortcycle。 -ingridchao(Ingrid); 2009-12-7 {470} (#5732673@0)
            我认为风不热的原因是shortcycle，前两分钟刚刚把管道里的冷分吹走，热气还没真正上来呢，就又停了。倒是地下室比以前暖和了。
            另外困惑的是用气量的问题。根据我们的记录，最冷的天，我们用20个字。而现在的气温根本没那么低，却也用了20个字。没有理由。
            有个可能是温控器（T-stat）和可高效炉配合不好。search了一下，理论上应该用2-stage的
            温控器。但应该普通的温控器也可以。我们是用program的，夜里温度低，可能高效炉更适合小范围的调节。
            总之高效炉的高效还没体现出来。不知是哪里出了问题。
    • 1，设定温度到了吗？ -czzhang(cz); 2009-12-6 (#5729487@0)
      • 温度设定在22.5 度，t-stat显示的当时温度为22.8度。暖炉启动了两分钟，然后实测温度显示没变化。 -ingridchao(Ingrid); 2009-12-6 (#5730345@0)
        • 这样我觉得正常，我家的中效炉子也是这样，有可能是温控器就这么编程的 -czzhang(cz); 2009-12-7 (#5730830@0)

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