Question about Aprilaire 600 Humidifier

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Too much water wasted

I have a carrier humidifier and it wastes so much water when the fan runs. There is a flow restriction orifice in line (red) but it still allows too much water. It's impossible to fine tune it with a shut off valve. Is there a replacement office that would be more restrictive.?

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The oriface is sized for the proper water flow for the model you purchased. If you are dissatisfied you could throttle down on the saddle valve to restrict the water flow to the unit.
Good luck
HVAC Teacher

Posted on Mar 09, 2009

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How much water should be draining from Aprilaire 550?


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Dec 13, 2009 | Honeywell HE220A1019 Whole House...

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With the Honeywell he220, you will use alot of water, trying to turn down the water will only reduce your amount of humidity in the home, you may be able to adjust it a little but you need to take the cover off and reduce the water flow a little at a time watching the water as it flows across the pad, you just have to make sure the humidifier pad is getting plenty of water across it, to little and you lose your humidification, hope that was helpful to ya, thanks for your question,
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This may not be a solution, but a couple things you might want to look at. First, the humidifier may not be big enough for your house - just because a contractor installed it doesn't mean he sized it right. Second, humidity may only be 30% locally by the humidistat, but higher in other parts of the house - it depends where the humidistat is located. Finally, look at your hot water line - I'm surprised he ran it off hot water and not cold - seems like a waste of energy to me, but the feed line may be clogged by sediment from the water heater

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