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Installation question - Honeywell Humidifier mangel 01-09-2007
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Posted by danger@heat.com on January 10, 2007, 12:08 am
Humidity won't damage your coil. LOL It removes humidity all summer long.
Besides it doesn't matter if use install on the supply or return, humidity
gets sucked thru the return, the heat exchanger and the coil, no harm. Static
pressure is the problem.

In your case install the humidifier on the return, mount the humidistat on the
return at least 11" above the humidifier.

Use copper 1/4" and supply hot water. Make sure you don't wire the thing to
run continously.

I need to know type of furnace and if you run the fan continously. Then I can
tell you how to wire it. There are many options.

-Canadian Heat


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Posted by dantheman on January 11, 2007, 9:01 am

danger@heat.com wrote:
> In your case install the humidifier on the return, mount the humidistat on the
> return at least 11" above the humidifier.

I humbly recommend that the humidistat control that comes with the
humidifier be mounted quite a distance further up along the return...
that way, if you ever install an HRV fresh air ventilator, your
humidistat will be located before the HRV supply tap into the return
(and therefore read more accurate indoor humidity). The HRV supply is
usually put in at least 8 ft up from the where the return meets the
furnace.. I put my humidistat about 15ft away (I have a dedicated
return for the HRV).

> Use copper 1/4" and supply hot water. Make sure you don't wire the thing to
> run continously.

Go buy a nice brass lever-type shut-off for the water (compression ones
are real easy to install--just cut out the pipe and tighten in the
shut-off) and don't use that stupid hole-poker that comes with the
humidifier.

As for wiring, just check you furnace manual and look for a "24v HUM"
tab on the schematic (or even a section explaining how to install a
humidifier). If there's no mention of "24v", you might have a 120v HUM
terminal in which case you would need to use that transformer that came
with your humidifier. Use a voltmeter to check first while the furnace
is running on heat (the HUM terminal may not activiate otherwise). You
may have to fool the furnace to run heat while the door is open by
pushing that saftey switch in...

Peace, Dan

----- ---- -- -


Posted by Stormin Mormon on January 11, 2007, 4:29 pm
If you're living in the northern hemisphere, you may need to
order a special HLSRAHABH. That being a Honeywell Left Side
Return air Hot Air Bypass Humidifier. Of course, we could be just
funning with you.

I've installed a bunch of Aprilaire 600 model humidifiers, it's
probably the same concept.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
.

> Purchased a Honeywell humidifer. Their installation
instructions are a
> little vague. I have what I htink is a High Boy furnace where
there is
> a cold air return on the left side of the furnace and above the
furnace
> is ducting with the AC evap coils and the duct leads up to the
warm air
> supply ducting for the house.
> Do I make the hole and mount the actual humidifier in the cold
air
> return dicting or on the warm air supply above the furnace? If
its the
> warm air supply then I have an issue in that the only p;ace I
can mount
> it is in front of the Evap coil and from what i am told, the
humidity
> can damage the coil.
> Please advise. Any help is appreciated and links or diagrams
would be
> even better.
>
> thank you!
>



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