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Connections positioning on YEFB 060-070:
NOTE: The internal diameter of the connection piping to these units has to be
bigger than 28 mm and properly insulated.
Piping path has to be defined in order not to interfere with the removal of the metal cover
panels on the bottom side of the unit.
To facilitate installation and maintenance, we recommend that manual shut-off valves are
installed on the intake and outlet pipes, and that a mechanical «Y» filter is interposed
between the valve and the inlet of the heat exchanger, in order to prevent the clogging of
the heat exchanger.
YEFB unit with right water connections
2 PIPE SYSTEM
1. Water inlet ..............................................1” M
2. Water outlet ..........................................1” M
4 PIPE SYSTEM
1. Inlet cooling water ..........................1” M
2. Outlet cooling water .....................1” M
3. Inlet heating water ..........................1” M
4. Outlet heating water .....................1” M
5. Condensate drain hose ....... ø20 mm
6. Electric box
YEFB unit with left water connections