Connection arrangement and linking arrangement with at least two plate heat exchangers, which are interconnected and that at least one of the plate heat exchangers can be connected to at least one respective peripheral piping, whereby the plate heat exchangers consist of soldered heat exchanger plates, which have connecting channels running transversely to the heat exchanger plates and in at least one outer plate there are connection openings, that the plate heat exchangers are arranged as parallel and/or serial cascades, whereby on the surface around the respective connection opening of at least one outer plate at least one connector is placed in alignment with at least one of the connection channels or at least one of the connection openings, whereby at least one connector is tensioned with or against at least one of the respective plate heat exchangers by means of a clamping device and that for connecting at least two plate heat exchangers between the first and second or further plate heat exchanger at least one additional connector is arranged so that between the plate heat exchangers in alignment with at least one of the connection channels or at least one of the connection openings of the plate heat exchangers at least one additional connector is arranged, whereby at least one additional connector is placed on the surface around the connection opening of the respective outer plate of the plate heat exchangers and is tensioned with or against at least one of the respective plate heat exchangers by means of the clamping device or an additional clamping device, whereby the clamping device is arranged outside the respective plate heat exchanger, characterised in that the respective connector is individually or as a group tensioned with or against one of the plate heat exchangers with at least one clamping device that encircles and/or engages behind the one of the plate heat exchangers and/or at least one connector. that the plate heat exchangers are arranged as parallel and/or serial cascades, whereby on the surface around the respective connection opening of at least one outer plate at least one connector is placed in alignment with at least one of the connection channels or at least one of the connection openings, whereby at least one connector is tensioned with or against at least one of the respective plate heat exchangers by means of a clamping device and that for connecting at least two plate heat exchangers between the first and second or further plate heat exchanger at least one additional connector is arranged so that between the plate heat exchangers in alignment with at least one of the connection channels or at least one of the connection openings of the plate heat exchangers at least one additional connector is arranged, whereby at least one additional connector is placed on the surface around the connection opening of the respective outer plate of the plate heat exchangers and is tensioned with or against at least one of the respective plate heat exchangers by means of the clamping device or an additional clamping device, whereby the clamping device is arranged outside the respective plate heat exchanger, characterised in that the respective connector is individually or as a group tensioned with or against one of the plate heat exchangers with at least one clamping device that encircles and/or engages behind the one of the plate heat exchangers and/or at least one connector.