CLIVET CSRN-XHE2 Series - Air Flow Setting; ECO Mode; Remote Controls; Scroll Compressor

18 CSRN-XHE2 15.2-44.4 M08F40N15-02
7.9 Scroll compressor
The Scroll compressors have only one rotation direction.
In the event it is reversed, the compressor is not immediately damaged, but increases its noise and jeopardises pumping.
After a few minutes, the compressor blocks due to intervention of the thermal protection.
In this case, disconnect power supply and invert 2 phases on the machine power supply.
Avoid the compressor working for a long time with contrary rotation: more than 2-3 of these anomalous start-ups can damage it.
To ensure the rotation direction is correct, measure the condensation and suction pressure.
The pressures must signicantly dier: upon start-up, the suction pressure decreases whereas the condensation one, increases.
7.10 Remote controls
Check that the remote controls (ON-OFF etc) are connected and, if necessary, enabled with the respective parameters as indicated in the
“electrical connections” section.
Check that probes and optional components are connected and enabled with the respective parameters (“electrical connections” section and
following pages).
7.11 Air ow setting
The real unit ow is according to the aeraulic system features.
Before checking, make sure that the system has been completed in all its parts (shunts, dampers, grilles, diusers etc.).
Check the doors and windows of the serviced room are closed.
Calibration must be carried out with unit all in recirculation.
The unit is in full recirculation during the rst 20 minutes from start-up.
Set the ow rate:
par 50 QSetMand (l/sec)
7.12 Air ow management
Airflow
Nominal
Min
100%
75%
50%
25%
Compressor load
Airflow
Nominal
Min
100%
75%
50%
25%
Compressor load
0
0
Airflow
Nominal
100%
75%
50%
25%
Compressor
load
0
Set
Heat
ECO
Set
Cool
ECO
Set
Heat
Set
Cool
1 2 3
Nominal = par 50 QSetMand
ECO mode
The ECO mode can be activated:
t
Manually
t
Automatically by the functionality of daily and weekly programming supplied as standard
Standard mode
The air ow supply remains constant in all heat load conditions and operation modes.
Variable airow
Option
The air ow supply varies depending on the heat load, up to a minimum value compatible with the distribution system and the chosen air
diusion.
The ventilation remains active even when the load is fullled (dead zone).