11
Total Heat Recovery unit VR (only available for IR units)
Hydraulic and cooling circuit components:
1. Heat recovery exchanger.
Specially designed for the specific version. Plate type, made of stainless steel (AISI 316). It is instal-
led within a shell of thermal barrier insulating material to prevent heat dispersion towards the outside. Standard supply also includes
an electric antifreeze heater to prevent the parts from freezing during the winter, if is it not drained.
2. Differential water pressure switch.
Installed on exchanger. It disables the heat recovery version if activated owing to lack of
water flowing through the recovery exchangers.
3. Heat recovery management valve.
This delivers refrigerant to the condensing coils or heat recovery exchanger, depending on
demands for hot water, and into the appropriate exchangers depending on whether hot water is required or not.
4. Fluid receiver.
This is a plenum tank that accounts for the refrigerant charge variations required by the unit as the operating
modes change (condensing in air or in water).
5. One-way valves
. Make the refrigerant obligatorily pass through the appropriate heat exchangers (coils / heat exchanger), de-
pending on the operating mode.
GENERAL FEATURES
