11
Minimum water temperature: 2°C, maximum 100°C
Maximum supply air temperature: 45°C
Ensure that the hydraulic network is well done (dimensioning, solidity, total clean-up, drain, etc…)
The functioning of auxiliary electrical resistances is forbidden when the main coil is supplied with hot
water.
Unless otherwise indicated concerning the machine, with an arrangement on the left, the inlet of water
matches the pipe at the bottom (for ceiling mounted unit). The outlet of water matches the pipe at the
top. With an arrangement on the right, the configuration is reversed: water inlet on the top of the pipe
and water outlet on the bottom of the pipe.
For a 4 tubes installation (device equipped of 2 coils), the chilled water coil is located before the hot
water coil in the direction of the air (unless otherwise specified)
The torque applied to use for the hydraulic connection is 25Nm. The tightening on the inlet and outlet
connections of coils has to be ensured with precaution with a backup wrench to avoid the transfer of the
effort on the coil’s tubes.
Install purges in the higher parts of the installation. Purge entirely the air inside the coil when the water is
passing on. It is also recommended to install ball valves on the water inlet and outlet, in order to could
dismount the units without draining the complete installation. Foresee drain plugs of the unit and the
circuit at the lower point.
It is imperative to foresee a non-freeze security for the devices that used with introduction of fresh air, in
order to protect efficiently the coil if the hot water production is stopped.
It is recommended to do the piping connection with isolated flexible pipes. For a connection that used
with steel tubes, ensure it are aligned and suspended to not put mechanical stress on the unit.
When the connection is done, it is necessary to surround the valves and the pipes with impermeable and
insulating materials. Insulate correctly the pipelines. Check that all connector seals when the system is
filling of water. The manufacturer cannot guarantee the quality of the seals which are provided by the
installer. AIRCALO decline all responsibility of an eventual malfunction of the kit and for damages that
can come from leaks.
5.2. Evacuation of condensates
The condensate drain pan is equipped with a smooth output DN 14 mm. It is recommended to connect
the pipe PVC of 25 mm with sealed links and to surround all of this with an adequate insulating cover.
To ensure a good run off of the condensates, the pipe should be slopped downwards and have a
constant downslope of 2 % without curves or horizontal draining. Its connection to the sewage system
has to be done with a siphon correctly proportioned to permit an enough and permanent evacuation of
water.
Foresee necessarily a vertical siphon such as : L1 (mm) will be equal to 2 x the pressure / depression of
the unit (mmCE)
MISTRAL
M20-M30
M40-M50
M60
L1 recommended
80 mm
100 mm
100 mm
L2 recommended
40 mm
50 mm
50 mm
In case of multiple units, the evacuation
plan to realized is this
one :
If it is not possible to ensure this downslope to drain the condensates, it will be necessary to install an
auxiliary draining pump with a level controller (we advise the models with floats to stop the flow in case
of pump damage). The flow of the pump to foresee will be in function of hygrometry rate. Foresee to stop
the chilled water production in case of power cut.
