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3. INSTALLATION
3.1 SPACES FOR INSTALLATION
The unit is made grouping all connections to the outdoor hydraulic circuit on a single side. Check that the positioning of the
unit allows easy access to that side and the electric control board. Comply with the clearances as shown on the dimensional
drawing, and ensure they are calculated allowing easy access to internal components in case of maintenance.
Figure 4: Unit recommended distances
3.2 HYDRAULIC CONNECTIONS
It is good practice to comply with the following directions, and in all cases with national and local regulations, when setting
up the hydraulic circuit (refer to the layouts included in the manual).
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fit the piping to the unit using flexible joints in order to prevent vibration transmission and compensate thermal
expansion
–
check that the system incoming pipes (both from the chilled beams and UTA side) are connected to their respective
water inlet connections
–
check that the utility supplying pipes are connected to their respective water outlet connections.
–
generally, to connect the machine infeed and outfeed pipes, it is neccessary to observe the instructions provided on
the stickers
Installation of the water temperature probe on the secondary circuit
This probe is already wired and installed if the "pumps on the secondary circuit" accessory is available. This probe is
supplied if the "pumps on the secondary circuit" accessory is not available. There must be a sump on the water supply pipes
to the chilled beams within which to install and wire the probe in accordance with the supplied wiring diagram. The supplied
probe is located inside the electric control board, and can be identified by a specific label bearing the same classification of
the wiring diagram.
Install the following components on piping:
–
stop cocks, temperature and pressure indicators for routine maintenance and unit inspection
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sumps on the inlet and outlet pipes for temperature measurements, if temperature indicators are not available
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shut-off valves (gate valves) to isolate the unit from the hydraulic circuit
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metal filter (inlet pipe) with a mesh not exceeding 1 mm to protect the exchanger from debris or impurities present
in the piping
–
vent valves, to be placed in the highest parts of the hydraulic circuit, in order to allow venting
