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Old 04-06-2009, 10:54 AM   #16
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Ventelation control recomendation


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If you don't mind. Try setting it to a sq ft of 1500.

If it makes no difference, then % is a fixed hourly setting only.

And thank you for checking and reporting.
I changed it to 1500 and over 23 hours it used 2850 kW. Running the math like above gets me 24.8% or about 14.5 minutes per hour. I verified that it's runtime was around 14 to 15 minutes by timing it. I was able to get the percentage down to 23% by removing 200 Watts off the total kilowatts used for off time.

Soooo, maybe it's not a straight percentage as you alluded to in an earlier post.

I'm going to set everything to the minimum to see how low I can get the runtime.

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Old 04-06-2009, 11:28 AM   #17
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Thanks for the update.

Don't you wish you could back charge HW, for all the work your doing, because their tech support isn't what it should be.
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Old 04-06-2009, 01:10 PM   #18
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Although I live in Texas, your ventilation problem is interesting to me and I thank you for posting your observations on it. Would you mind sharing the terms of your utility sharing the Kill-A-Watt device they loaned you? Will they bill you the purchase price if you don't return it as planned?

I really wanted to get a Honeywell Vision Pro thermostat, except for a technical issue I had with the fan circulation option. Got as far as talking to a technical person at Honeywell, who insisted on the one answer I could not accept. Now I am wondering if what he told me was even accurate.

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Old 04-06-2009, 03:20 PM   #19
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Honeywell tech support is often slightly incorrect.
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Old 04-06-2009, 10:50 PM   #20
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Although I live in Texas, your ventilation problem is interesting to me and I thank you for posting your observations on it. Would you mind sharing the terms of your utility sharing the Kill-A-Watt device they loaned you? Will they bill you the purchase price if you don't return it as planned?

I really wanted to get a Honeywell Vision Pro thermostat, except for a technical issue I had with the fan circulation option. Got as far as talking to a technical person at Honeywell, who insisted on the one answer I could not accept. Now I am wondering if what he told me was even accurate.

Best wishes -- C44
The way it works is I put down a $25 dollar deposit and keep the device for a few weeks and return it to get my deposit. The device only cost's $20 online so they don't hound me to return it.
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Old 04-06-2009, 10:56 PM   #21
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When I got home today I recalculated the ventilation % and to my surprise it was up to 35% then I noticed my ventilator was not turning off .

I'm going to try the test again, this time with the min settings. I'll do that tomorrow morning and check with the wife during the day to make sure the ventilator is turning off. I need to have the HVAC tech out to look at another problem with the humidifier/blower and now I might need to have them look at my ventilator controls too. The sad part is that honeywell will probably just give them more slightly incorrect information.
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Old 04-06-2009, 10:59 PM   #22
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Thanks for the update.

Don't you wish you could back charge HW, for all the work your doing, because their tech support isn't what it should be.
Yes that would be nice, but what would be nicer is if there nohelp line actually provided some help once in a while.
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Old 04-08-2009, 01:17 PM   #23
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1 Bedroom, 1000 sq/ft, 30% and max cfm 195
11 hours of runtime yielded 1.02kW.

Doing some math gives me about 18% or averaging 10.8 minutes per hour.
I sat with my laptop doing some work in audible range of the HRV and in visible range of the light that indicates it is on. It ran for 40 mins, then was off for 50 minutes and then on for 10 mins. I wasn't able to monitor it beyond that, but it seemed strange that it was on so long during the first hour.
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Old 04-08-2009, 03:15 PM   #24
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No idea about the first hour long run time.

But, I think now, its running close to what you want.
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Old 04-09-2009, 03:13 PM   #25
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I have the same experiment going with min settings and the percentage bumped up to over 30% again after more hours have passed. I suspect something is wrong with my measurement setup so I'm a little frustrated at this point. I'm going to have the HVAC technician come out and look at the system. The research manager I'm working with at their company says that honeywell makes a $52 device that can more accurately control the Venmar unit.

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