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16 Plates Floor Heating 304 Plate Mini Stainless Steel Heat Exchanger For Vaillant Gas Boilers ReplacementHow to establish the plate warmth exchanger correct for you ?1. First confirm the variety of plate warmth exchangersYou can examine the facet brand of the unique board changer, and you may also measure the thickness. Confirm again whether or not the water circulate is parallel or crossBlow from one port to look which port the air comes out from at the opposite side, if it comes out from a parallel port, it is a parallel stream it comes out from the alternative corner of the mouth, it is the appropriate communication3. Confirm whether the water outlet is crimped or flat4. Measure the gap between the two screw holes, there are 148 and 154mm on the market