Innova Stone Monoblock M1, Руководство по установке, Страница: 31 / 72

31
INSTALLATION
– Insert the fromwork completely into the space provided
– Fix into the wall properly the fromwork
– remove the support brackets
– follow the guides provided on the formwork
– insert the machine body into the formwork
– use the locking brackets
– fix the machine body to the formwork
Terminate all connections:
– fit the cosmetic Panel (see the instructions supplied with
the accessory).
Operating the appliance without installing the cosmetic
panel is forbidden.
2�12 Hydraulic connections
Preliminary warnings
The engineer is responsible for choosing the right water
lines and their size, in accordance with good installation
practices and the applicable law.
The hydraulic plant must be made with reference to the
diagrams in this manual or on the website.
The hydraulic pipes connecting to the appliance must be
suitably sized for the actual water flow rate required by the
plant during operation. The water flow rate to the heat ex-
changer must always be constant.
The maximum permissible pressure drops must be com-
pared with the data shown in chapter "PP1 primary circu-
lation pump graphs"
p. 68 . If higher heads are required
due to high pressure drops in the plant, an external pump
with respective buffer vessel must be used.
Make sure that the quantity of water in the primary circuit
is greater than the minimum volume indicated in chapter
"Plant water content and minimum flow rate"
p. 31 , to
prevent the risk of ice formation during defrosting oper-
ations or continuous modulation of the compressor fre-
quency
It is important to note that the heat pump Control Panel
manages all the adjustments of the primary circuit (plant
and domestic hot water set-point, circulation pump, dy-
namic set control and auxiliary heater management).
Any regulation that foresees the management of the plant
with a control unit or a boiler conflicting with these regu-
lations must be submitted to the manufacturer's technical
office in advance for approval otherwise the warranty will
be invalidated.
If the appliance is connected in parallel with a boiler, make
sure that the temperature of the water circulating in the
heat pump does not exceed 60 °C during operation.
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 the refrigeration circuits and to guarantee the correct level
of comfort.
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
• 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.
Models m.u.
5-M 7-M 9-M 11-M 11-T 13-M 13-T 15-M 15-T
Minimum system water content L 20 25 30 35 35 40 40 50 50
Minimum flow rate
To prevent the differential pressure switch from tripping, a
minimum water flow rate must be guaranteed to the appli-
ance.
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.
Using plants with pumps in series is forbidden.
Models m.u.
5-M 7-M 9-M 11-M 11-T 13-M 13-T 15-M 15-T
Minimum water flow rate m³/h 0,6 0,9 1,1 1,2 1,2 1,4 1,4 1,7 1,7