Aircalo CASSETTE BALI Installation And Maintenance Manual - page 10
9
5. HYDRAULIC CONNECTIONS
Instructions
Operating limit:
Maximum allowable pressure 140 MCE
Min ambient air temperature 5 °C, max 32 °C
Minimum water temperature 2 °C, max 80 °C
Temperature blowing max 60 °C
Respect the inlet and outlet water coil as shown on the labels on
the unit.
For cassettes 4 pipes be sure to connect the chilled water circuit to
the coil specified "cooling" and the hot water circuit to the coil
mentioned "heating".
The tightening torque to be used for water connections is 25 Nm. It
is advisable to tighten with a wrench.
Fully drain the coil, using traps accessible by removing the filter
panel.
To make draining the unit if necessary, cut the electrical supply and
the water supply to the unit. Loosen the bleed screw to release pressure in the coil. Partially unscrew the
lower
manifold piping
or valve. The water flow can be exhausted via the auxiliary drain pan if it has been
installed correctly and its operation has been tested beforehand.
Note that the coil is partially drainable; for a complete discharge, it is necessary to blow air under
pressure into the coil.
It is recommended to do the connections to the coil with insulated flexible pipes. For connection with
steel pipes ensure they are alined and suspended to not make mechanical stress on the unit.
When the connections are completed, it is necessary to surround the valves and piping with insulating
materials such as polyethylene foam having a thickness of 5 to 10 mm.
Check all joints of the fittings when the system is filled with water.
The manufacturer can not guarantee the quality of the seals provided by the installer.
It assumes no responsibility for any dysfunction of the sets and damage that would result from leaks.
Size
BALI 60
BALI 90
Principal coil
3/4" Female gas
3/4" Female gas
Auxiliary coil 1 row
3/4" Female gas
3/4" Female gas