Publicité
Les langues disponibles
Les langues disponibles
II.6.2
CONTENTS OF WATER CIRCUIT
The electronic control equipped with the AdaptiveFunction makes it
possible to reduce the amount of water in the system. For proper
operation of the unit, a minimum amount of water must be ensured in
the water system.
All units are equipped with an expansion tank that limits the maximum
amount of water contained in the system.
Model
115
117
122
124
127
130
133
II.6.3
WATER DATA
Model
Safety valve
Exchanger water contents
Tank water content ASP1
Tank water content ASP2
II.6.3.1
Expansion tank technical data
Model
Capacity
Pre-charging
Maximum expansion tank pressure
II.6.4
RECOMMENDED INSTALLATION
3
4
1
1
Valve
Water filter (to be installed by the
2
installer)
3
Water inlet
4
Water outlet
Maximum water circuit content
62
70
90
97
107
116
136
kPa
l
l
l
l
barg
barg
2
1
SECTION II: INSTALLATION AND MAINTENANCE
If the amount of water in the system is less than the indicated amount, it
is necessary to install an additional storage tank.
If the water contents exceeds the indicated value, an additional
expansion tank of a suitable size will be required.
Maximum water circuit content
Blend with ethylene glycol
0 %
10 %
190
170
190
170
190
170
190
170
190
170
190
170
370
340
115
117
122
124
3
3
3
3
1,33
1,33
1,90
2,20
35
35
45
45
-
-
-
-
115
117
122
7
7
7
1
1
1
3
3
3
II.6.5
PROTECTING THE UNIT FROM FROST
IMPORTANT!
If the mains switch is opened, it cuts off the
electricity supply to the plate exchanger heater and
the storage tank antifreeze heater (if included). The
switch should only be disconnected for cleaning,
maintenance or repair of the machine.
When the unit is running, the control board protects the water-side heat
exchanger from freezing by making the antifreeze alarm cut in, stopping
the machine if the temperature of the sensor fitted on the heat
exchanger reaches the set point value.
IMPORTANT!
When the unit is out of service, drain all the water
contents from the circuit.
If the draining operation is felt to be too much trouble, ethylene glycol
may be mixed with the water in suitable proportions in order to
guarantee protection from freezing.
IMPORTANT!
Mixing the water with glycol modifies the
performance of the unit.
The use of ethylene glycol is recommended if you do not wish to drain
the water from the hydraulic system during the winter stoppage, or if the
unit has to supply chilled water at temperatures lower than 5°C The
addition of glycol changes the physical properties of the water and
consequently the performance of the unit. The proper percentage of
glycol to be added to the system can be obtained from the most
demanding operating conditions from those shown below.
Table "H" shows the multipliers which allow the changes in performance
of the units to be determined in proportion to the required percentage of
ethylene glycol.
29
20 %
30 %
160
140
160
140
160
140
160
140
160
140
160
140
340
290
127
130
133
3
3
3
2,40
2,60
3,20
45
45
80
-
-
80
124
127
130
133
7
7
7
14
1
1
1
1
3
3
3
3
Publicité
