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-   -   Need Humidifier ASAP, 2+ problems (http://www.diychatroom.com/f17/need-humidifier-asap-2-problems-133604/)

ChrisDIY 02-13-2012 12:13 PM

Need Humidifier ASAP, 2+ problems
 
Hello!

Need a humidifier ASAP, but have two maybe three problems. I am using a heat pump, bypass recommends using hot water as a result. Problem 1.

I have tankless water heater, humidifier will not flow at a rate high enough to get hot water Problem 2.

Already have an Aprilaire 8870 thermostat programmed to run humidifier. Problem 3.

Is Aprilaire 800 steam my only option? Any other recommendations?

--Chris

plummen 02-13-2012 12:31 PM

You can run any brand of humidifier on there you want,its basically a pad /a valve /humidistat and some 6" single wall pipe youre installing no matter what the brand name is.
You can buy them at any box store:)
As far as the plumbing id try it with your cold water supply line and see how it works

dosy777 02-13-2012 02:29 PM

Do NOT hook up ANY humidifier to your HOT water.....always use Cold water, Unless its a steam humidifier. Warm water will only promote the growth of things you don't want to be in you duct system. Here is one more sensible aspect to consider.......you have a high efficiency furnace, and now a state of the art humidification system attached to your furnace, if its being supplied by the hot water tank or a hot water line that is fed from your household HWT then every time the humidifier run, so will you hwt, wasting money to heat water for a humidifier. Why is this wasteful?

Its simple, the water being supplied to the humidifier will be passing through the furnace heat exchanger, it will along with the air it is mixed with be heated by the heat exchanger. So using hot water and burning gas to heat that water in the HWT is wasteful and redundant.

hvac5646 02-13-2012 03:07 PM

Quote:

Originally Posted by dosy777 (Post 852583)
Do NOT hook up ANY humidifier to your HOT water.....always use cold.

Aprilaire requires a hot water supply.

hvac5646 02-13-2012 03:14 PM

Quote:

Originally Posted by plummen (Post 852518)
You can run any brand of humidifier on there you want,its basically a pad /a valve /humidistat and some 6" single wall pipe youre installing no matter what the brand name is.
You can buy them at any box store:)
As far as the plumbing id try it with your cold water supply line and see how it works

You can't get a a bypass humidifier work reliable or at all because the HP dsupply air is not hot enough. Most humidifiers have a design temp of 120*F. A few are even rated at 160*F.

And correct me if I am wrong, but I think as the ODA drops so does the HP supply temp. So that leaves evaporative humidifiers out.

plummen 02-13-2012 05:41 PM

Never had an issue with it before :)

ChrisDIY 02-13-2012 06:26 PM

Quote:

Originally Posted by hvac5646 (Post 852612)
You can't get a a bypass humidifier work reliable or at all because the HP dsupply air is not hot enough. Most humidifiers have a design temp of 120*F. A few are even rated at 160*F.

And correct me if I am wrong, but I think as the ODA drops so does the HP supply temp. So that leaves evaporative humidifiers out.

Currently
OT: 32F
Supply temp 80F

hvac5646 02-13-2012 06:43 PM

Quote:

Originally Posted by plummen (Post 852735)
Never had an issue with it before :)

On back up heat it will work...sure...but how 'bout the guy who uses his heat pump most of the winter?

hvac5646 02-13-2012 06:44 PM

Quote:

Originally Posted by ChrisDIY (Post 852767)
Currently
OT: 32F
Supply temp 80F

Your gonna need steam bro'.

ChrisDIY 02-13-2012 07:40 PM

Great...

Aprilaire 800 is expensive and this forum is showing mixed results with TruSteam units. I have two heat pumps to make it even worse. I have to figure out a way to use the 850 fan pack and mount centrally.

plummen 02-13-2012 08:26 PM

Quote:

Originally Posted by hvac5646 (Post 852776)
On back up heat it will work...sure...but how 'bout the guy who uses his heat pump most of the winter?

My goodman heatpump gets me through most of the season around here,especially the way this winter has been so far.
I guess I just havent noticed any problems with my set up :)

beenthere 02-14-2012 04:42 AM

EWC Autoflow S2000 steam humidifier.

hvac5646 02-14-2012 08:24 AM

Quote:

Originally Posted by plummen (Post 852876)
My goodman heatpump gets me through most of the season around here,especially the way this winter has been so far.
I guess I just havent noticed any problems with my set up :)

we're talking about humidity....

plummen 02-14-2012 10:09 AM

I know,just saying I just run cold water to the humidifier on mine with a heat pump with no noticeable issues

hvac5646 02-14-2012 10:18 AM

Measure the humidity when it's around 30* or lower and then tell me how good it is.:)

Running supplemental heat does not count. :no:


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