Return-Path: <13brv3@bellsouth.net> Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2892293 for flyrotary@lancaironline.net; Mon, 15 Dec 2003 20:34:04 -0500 Received: from rad ([68.212.7.74]) by imf22aec.mail.bellsouth.net (InterMail vM.5.01.06.05 201-253-122-130-105-20030824) with ESMTP id <20031216013403.SPT4878.imf22aec.mail.bellsouth.net@rad> for ; Mon, 15 Dec 2003 20:34:03 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "Flyrotary List" Subject: Dual EWP thoughts Date: Mon, 15 Dec 2003 19:34:02 -0600 Message-ID: <00e001c3c374$b14026e0$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00E1_01C3C342.66A5B6E0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_00E1_01C3C342.66A5B6E0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Greetings, =20 Since I'm now planning to use two evap cores (ordered them today) in the cheeks, and both DC EWP's, I'm trying to figure out the best way to = plumb them. First, this does mean that I'll get rid of the mechanical pump, = and probably the pump housing as well. In fact, I ordered one of the = Meziere adapters for the block to make the plumbing easier. =20 =20 The adapter block has one large threaded hole for water out to the radiators, and two smaller threaded holes for water in. I don't really = know the size of the threaded holes yet, but I'm hoping they're 3/4" NPT for = the smaller ones, and 1" NPT for the larger. I'm planning to order two one = way valves from McMaster Carr, as soon as I verify the size of the holes. =20 =20 Here's the current (never final) plan. The large outlet from the = Meziere adapter will go to a Y, then to the top of each core. The bottom of the cores (other tank of course) will go to the pumps. The outlet of the = pumps will go back to the one way valves, which will be screwed into the two = inlet holes in the Meziere adapter. =20 =20 Here's the question of the day. I could either run each evap core to a single pump, then to the engine, or I could combine the outlets of the cores, and run them to both pumps. One way, a single pump will only = flow through one core, where the other way, a single pump will flow through = both. The second pump either adds a core to the circuit, or doubles the flow = to both cores. One core, at RV cruise speed is probably all I need, and it = may be all I ever need in the winter. Does anyone have a feel for which = would be the better plumbing choice? =20 =20 Thanks, Rusty (hoping to "bring good things to light" in the near future) ------=_NextPart_000_00E1_01C3C342.66A5B6E0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
Greetings,
 
Since I'm now = planning to=20 use two evap cores (ordered them today) in the cheeks, and both DC = EWP's, I'm=20 trying to figure out the best way to plumb them.  First, this does = mean=20 that I'll get rid of the mechanical pump, and probably the pump housing = as=20 well.  In fact, I ordered one of the Meziere adapters for the block = to make=20 the plumbing easier. 
 
The adapter = block has one=20 large threaded hole for water out to the radiators, and two smaller = threaded=20 holes for water in.  I don't really know the size of the threaded = holes=20 yet, but I'm hoping they're 3/4" NPT for the smaller ones, and 1" NPT = for the=20 larger.   I'm planning to order two one way valves from = McMaster Carr,=20 as soon as I verify the size of the holes. 
 
Here's the = current (never=20 final) plan.  The large outlet from the Meziere adapter will go to = a Y,=20 then to the top of each core.  The bottom of the cores (other tank = of=20 course) will go to the pumps.  The outlet of the pumps will go back = to the=20 one way valves, which will be screwed into the two inlet holes in = the=20 Meziere adapter.  
 
Here's the = question of the=20 day.  I could either run each evap core to a single pump, then to = the=20 engine, or I could combine the outlets of the cores, and run them to = both=20 pumps.  One way, a single pump will only flow through one = core,=20 where the other way, a single pump will flow through both.  The = second pump=20 either adds a core to the circuit, or doubles the flow to both = cores. =20 One core, at RV cruise speed is probably all I need, and it may be = all I=20 ever need in the winter.   Does anyone have a feel for which = would be=20 the better plumbing choice?  
 
Thanks,
Rusty (hoping = to "bring=20 good things to light" in the near=20 future)
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