ART-U
TEChnICAL MAnUAL
10
exterior. In this case it is advisable to install the 3-way (or
2-way) valve accessory in order to stop the flow of water in
the coil when the fan is stopped.
During wintertime periods of quiescence, drain water from the
system, to prevent ice from forming. If anti-freeze solutions are
used, check for their freezing point using the table below.
% Glycol by weight
Freezing
temperature (°C)
Capacity
adjustment
Pressure drop
adjustment
0
0
1,00
1,00
10
-4
0,97
1,05
20
-10
0,92
1,10
30
-16
0,87
1,15
40
-24
0,82
1,20
