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Translation from original instructions
6.7 Refrigerant connections on the remote exchanger
For the "LE" motocondensing units, connect the liquid pipe that comes out of the unit to the expansion valve installed on
the distributor of the remote heat exchanger and the suction pipe of the unit to the relevant manifold on the remote heat
exchanger.
For the "LC" condenserless units, just connect the liquid pipe and the delivery pipe that come out of the unit to the relevant
ones of the remote heat exchanger.
For the reversible motocondensing and condenserless units ("LE/HP" and "LC/HP"), the refrigerant connections differ in the
number of connections of the remote heat exchanger.
For more detailed information, also refer to the refrigerant diagram of the unit.
6.7.1 Expansion valve
The “LE“, “LE/HP” and "LC/HP" units can have an expansion valve supplied as accessory, to be installed by the installer,
on the remote heat exchanger.
The supplied expansion valve is sized with reference to the envisaged operating conditions for the unit.
Carry out the installation following the documentation attached to the valve.
6.7.2 Remote heat exchanger with two connections
In this case, it is necessary to install a non-return valve in parallel to the expansion valve and connect both valves with a “T”
joint to the liquid line coming from the unit.
Fig. 8 Diagram of expansion valve connection with remote heat exchanger with two connections
6.7.3 Remote heat exchanger with three connections
In this case, it is necessary to install a non-return valve on the heat exchanger liquid manifold in parallel to the distributor
and to the expansion valve, and join them with a “T” joint to the liquid line coming from the unit.
Fig. 9 Diagram of expansion valve connection with remote heat exchanger with three connections
