chuckbear wrote:
trailrider wrote:
chuckbear wrote:
That lip won't keep out more than a drop of rain. It is there to allow the install of a bug shield, which hangs on the lip and is secured by a spring. The difference in length is probably to allow it to fit in the new furnace and not the old one. Chuck
The lip isn't there to "allow the install of a bug shield." The furnace manufacturers specify in their manuals to never block the exhaust or intake of the furnace with anything, including screens.
Wow, Most every RV supplier out there, including Amazon must be totally unaware of that, including us and most RV's we have seen.
http://www.amazon.com/JCJ-M-200-furnace-Outside-Fitting/dp/B0002UHWIG
Chuck
Aftermarket suppliers could not care what their products may do to a appliance. Suburban/Atwood/Dometic/Norcold all state to NOT add bug screens to the outside vents. The REASON is- they do not want the instake side to pull in weeping willow type debris that would block off the correct amount of fresh air required to get the LP to air mixture in correct burn proportion. On Refers, those screens block OFF up to 50% of the cool fresh air needed to correctly cool the refer. They all state adding those screens voids the warranty. I advise my customers to remove the screens when they come in if they have a problem with the appliance under warranty. We do not void if they have those screens and they are clear of debris. I have NEVER seen any real build up on those screens in all the years I have worked on RV's. Doug
