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CONNECTIONS
PLUMBING CONNECTIONS
The plumbing connections are made with flat fittings complete with seal gaskets (supplied).
In the 4-pipe version of the unit, it is essential to install the VHL1 valve accessory. For this purpose
use the supplied gaskets. The accessory has gaskets for connection to the system.
Information for the correct installation of the VHL1 valve is contained in the accessory instruction
booklet.
The delivery and return pipes must be equal, suitably scaled and insulated to avoid heat dispersion
and dripping during cold functioning.
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