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Old 01-30-2019, 09:57 AM   #1
Fr Jeff
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1989 29' Excella
Oscoda , Michigan
Join Date: Nov 2009
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Furnace Vents

Picture is of my 1989 Excella 29 furnace vents.

My manual shows the two hole vent and I believe the top is air intake and the bottom is exhaust.

However, I have no idea what the single vent does.

Anyone have an answer? Many thanks.Click image for larger version

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Fr. Jeff

2016 F150 Ecoboost
1989 Excella 29
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Old 01-31-2019, 09:51 AM   #2
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1958 26' Overlander
Battle Ground , Washington
Join Date: Jun 2013
Posts: 372
Images: 21
Is your water heater adjacent to the furnace? It is embossed with 'Suburban'.
Looks like its been on the trailer quite a while, perhaps the original vent for the water heater. The design is not quite the same as their current models.

Harold & Rebecca

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Old 01-31-2019, 11:49 AM   #3
Rivet Master
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 6,128
Normally the exhaust is the top hole and the intake the bottom hole. This is to prevent recirculation of exhaust back into the intake. Not sure what the hole on the left is. Peek under the counter and look.

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Old 01-31-2019, 04:15 PM   #4
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1991 34' Excella
1963 26' Overlander
1961 26' Overlander
Central , Mississippi
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The 34' trailers came with a larger furnace that has 2x exhaust ports on the top and 1 inlet on the bottom
Hi Ho Silver RV! Vernon, Sarah, Mac the Border Collie(RIP) -
A honkin' long 34' named AlumaTherapy
and a 26' '63 Overlander, Dolly
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