You are missing a lot. All air going through the heater is "Outside" air. That plate does two things, one it provides restriction to as too much outside air will never be heated. It also ensures the air contacts the entire core to get all of the heat off the core. It makes most of the air travel up-down, for maximum contact time. As cheap as VW is, if it wasn't needed, it probable wouldn't be there. As for heater performance, max heating is not obtained with the fan on high speed. Speed 2 will probably warm the van the fastest. Note the drawings no the right of the heater levers, max. defrost fan speed 2. Dennis
-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of Joachim Preiss Sent: Sunday, December 15, 2002 10:05 AM To: vanagon@GERRY.VANAGON.COM Subject: front heater core flow restriction Volks, worked my way to the front heater fan in my '85 Westfalia 1.9 WBX checking out why it wasn't working. Found the fan completely rusty and dead. Hardly turns by hand. Anyways, as I was taking the heater core out of the flap housing, I found a square piece of sheet metal with 3 dozen holes in it covering 2/3 of the height of the core. Obviously an airflow restrictor. I think it was on the output side of the core, because there was dust and sand and dead bugs trapped underneath. My fan's been dead a long time, and I don't remember really what the output was, but is it ever enuff? And when it's cold why would you want to restrict the output of your front heater?! So I've kinda decided to leave that restrictor out when I put it back together with a new fan, but I wanted to ask the list for input maybe I am missing something. Thanks as always. Frohe Weihnachten! Joachim '85 Westfalia 1.9 WBX 'Spielmobil' [mailto:spielmobil@earthlink.net} |
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