Date:         Thu, 16 Aug 2012 18:40:39 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: A/C Blower Fans
Comments: To: TJ Hannink <tjhannink@YAHOO.COM>
In-Reply-To:  <1345128531.60835.YahooMailNeo@web120702.mail.ne1.yahoo.com >
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At 10:48 AM 8/16/2012, TJ Hannink wrote:
>unit is 251 819 015 while the one for the A/C is 321 820
>015.   Physically they look the same and they are both rated at 300
>watts. The only physical difference I can see is the electrical
>connections.   One online parts vendor told me no, they

Three hundred watts?  As in 22 amps at 13.6 volts?  Maybe if they're
stalled and burning up, but I've measured several at about 150 watts
running at max load (housing assembled, not installed in blower box)*
at ~12.5 volts, so I'm not buying that as a running rating.  In the
1.9l vans the heater blower shares a 16A fuse with the wipers and
rear defrost, IIRC.  Granted that circuit is overloaded and you can
easily find it because it melts the fuse cover in that position, but
an actual 300 W blower would blow that fuse all by itself.

*It's a centrifugal blower - like all centrifugal pumps it sheds load
if either inlet or outlet are constricted, so merely mounting it in
the blower box will unload it to some extent.

Yours,
David