Innova 3in1 5M Installer Manual page 21

Hydraulic plant
Heat pumps require plants that guarantee a constant flow of
fluid to the appliance, within the minimum and maximum
values and with sufficient volumes to avoid imbalances in
Plant water content and minimum flow rate
Water content
A minimum volume of water in the primary circuit of the
plant must be guaranteed for the correct operation of the
appliance.
The minimum volume is necessary to prevent risks of ice
formation during defrosting operations or continuous
modulation of the compressor frequency.
It also allows the following advantages:
• less wear and tear on the appliance
Models
Minimum system water content
Minimum flow rate
To prevent the differential pressure switch from tripping, a
minimum water flow rate must be guaranteed to the appli-
ance.
Models
Minimum water flow rate
5-M 7-M
m.u.
L 20 30
5-M 7-M
m.u.
L/min 900,0 900,0
the refrigeration circuits and to guarantee the correct level
of comfort.
• increased system performance
• improved temperature stability and accuracy
The minimum volume is indicated in the table below:
If the minimum volume is not reached, a suitably sized
storage tank must be provided.
The minimum volume must be guaranteed in all operat-
ing modes and under all conditions.
9-M 12-M 12-T
40 50 50
The minimum flow rate must be guaranteed in all operating
modes and under all conditions, if necessary by adding a by-
pass valve.
A hydraulic separator must be provided if the plant requires
a higher head than that available from the pump of the unit.
9-M 12-M 12-T
1000,0 1300,0 1300,0
INSTALLATION
15-M 15-T
65 65
15-M 15-T
1800,0 1800,0
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