The heat exchanger is Swedish, make and model: SWEP E8T-SC-S
http://www.swep.net/index.php? tpl=productsheets&lang=en&id=361&Type=E&Size=8T&Material=SC&Pressure=S
The installation manual is here: http://www.swep.net/fileview.php?file=1300709490 The brass manifold is also from SWEP. Best regards, Horace Heffner http://www.mtaonline.net/~hheffner/
