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If I remember correctly... In Wisconsin, the dryer has to certified for use with a secondary exhaust fan. The State Plan Examiner said he didn't care what the fan was rated to do, the dryer needed to be approved also.

Is the furnace "natural" draft or "induced" draft, is there a power venter? Is the furnace 80% or 90+%, does it use PVC pipe to vent the products of combustion and have a condensate drain? Is there a gas water heater, natural draft or power vent? ALL fuel burning appliances need adequate...

Try looking at it as a snow melt situation. What is the construction of the deck? How many BTU's are required? Is the condenser ever off line during peak weather conditions?

The total cooling capacity of a 4 ton system should be the same 10 SEER or 15 SEER. You have to look at the coil capacity to see the Sensible/Total ratio. Air flow should be 350 CFM per ton minimum. The lower the airflow the greater the moisture removal. Till you freeze the coil.

The air temperature should be "about" 2°F above the water temperature. If you live near a lake, as soon as the air temperatre drops below the water temperature you see "steam" rising off the water. The same thing happens in a pool. Try looking at the http://www.desert-aire.com/ They have pool...

We had this problem also. The bank's answer was to right-click the screen and refresh. We were told is is a problem with IE. Thanks Microsoft.

All condensing furnaces have a drain. Raining should just go down the drain. A cap is not necessary. If it rains too much the furnace will shut off till the drain clears. The secondary heat exchanger may have holes. That can allow the condensate to leak to the division plate. Not all of...

Our experience with silicon nitride is good. Failure out of the box is very rare and the parts are tough enough to survive in a service truck. Stay away from silicon carbide. They are very delicate.

Where is the combustion air for the duct heater coming from? If the dew point of the combustion air is greater than the leaving dry bulb of the coil there will be condensation in the heat exchanger. Unless the vent is sealed tight there will be some movement of air through the combustion side...

There is a pressure switch in the induced draft assembly (IDF). During a high wind condition the IDF may not be strong enough to operate the switch. This results in a safety lockout. Most current controls are reset by turning the power off and then back on.

Is that fuel gas or flue gas? What pressure and temperatures are you using? Is this buried or surface installed?

I believe that you: Insert a view port in layout (paper) space. In model space Zoom the drawing to 1/8XP Print from paper space with a 1 = 1, plotted to drawing ratio

cuteprinter.exe, CutePDF Printer allows any individual to quickly and easily create compact PDF documents from ANY Windows application (must be able to print Google cuteprinter.exe for this free program. I believe that you can create a full size PDF print.

Aire-Flo is manufactured by Ducane. Ducane is owned by Lennox International. Aire-Flo is the label sold through the Lennox Industries warehouses.

I would suggest corrugated stainless steel tube, CSST. It is available in many sizes and runs up to 250'. No joints in the plenum.