HvacTech2 wrote:
Hi Tony, hope you are having a nice day

On 16-Dec-04 At About 01:03:01, Tony Hwang wrote to All
Subject: AprilAire Humidistat

TH From: Tony Hwang

TH Hi, If the 'stat is mounted on the cold air return duct, I don't
TH think it's measuring humidity of your living space, like your living
TH room or hallway. Wouldn't it be common sense? Actually RH is
TH function of DEW point which relates to temperature and moisture in
TH the air. We are not measuring absolute humidity, we're measuring
TH RH in this case. Tony

Actually it is measuring space humidity. where do you think the return air
comes from?


-= HvacTech2 =-


.. "And when you add them, they magically become one new number."

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Hi,
To be precise, it depends the location of 'stat on the duct in reference
of moisture injection point. My brother-in-law is a HVAC engineer.chief
estimator for major commercial outfit. I asked him what is "space
moisture" and he said, "What is it?"
Tony