Innova Stone Monoblock M1, Руководство по установке, Страница: 50 / 72

50
PUTTING IT INTO SERVICE
3�2 Powering the appliance
Start the unit:
– set the main switch to ON
The display will light up a few seconds after power-up, check
that the operating status is OFF. Otherwise, press the
but-
ton to put it in Standby.
Refer to the Control Panel Manual for operation.
The first start-up must be carried out with standard set-
tings. Only after the test has been completed, change the
operating set point values.
Power up the unit for at least 12 hours before start-
ing. Make sure the Control Panel is off.
Checks
Perform the following steps after powering up the unit:
– check that the connections made by the installer comply
with the documentation
– check that all hydraulic connections are correctly made
– make sure that the circulation pump is running and that
the water flow rate is sufficient to close the contact of the
differential pressure switch
– check the water flow rate
– make sure that the differential pressure switch is working
properly
During the initial start-up phase, the technician must meas-
ure the reference values of the plant water with special test
kits.
Take the necessary steps to achieve the indicated limits
if the total hardness is greater than 15 °F or some top-up
water reference values are not within the limits indicated.
Water from wells or groundwater that is not from an aq-
ueduct should always be carefully analysed. If necessary,
condition with appropriate treatment systems.
If a softener is installed, in addition to following the man-
ufacturer's instructions, adjust the outlet water hardness
to not less than 5 °F (by performing pH and salinity tests)
and check the outlet chloride concentration after adjust-
ing the resins.
3�3 First start-up
Once all checks have been performed, the unit can be start-
ed:
– close the door of the electrical cabinet
– set the main switch to ON
– display the water temperature and the type of operation
of the machine
– check the set operating parameters (set-point)
– reset any alarms
Refer to the Control Panel Manual to carry out the oper-
ations.
PP1 primary circulation pump
When starting up, it is recommended to set the speed sector
to the maximum.
The maximum head value must be set with:
• 100% compressor capacity
• all distribution valves open
• all consumers on
If alarm ALRM 017 appears during the first start-up, after the
circulator starts, check that:
• the plant valves are open
• there is at least one consumer with an open circuit
• the sieve filter is not clogged
• there are no air bubbles inside the circuit
• the water pressure of the plant is correct
If necessary, rearm the alarm.
After the start-up phase, adjust the pump head according to
the characteristics of the plant, see chapter "PP1 primary cir-
culation pump"
p. 51 .
Checks with the machine switched on
After starting up, check that
• the current draw of the compressor is lower than the max-
imum indicated in the technical specifications table
• the supply voltage value is within the set limits and does
not fall below the nominal value during compressor op-
eration -10 %
• in models with three-phase power supply, the compressor
noise level is not abnormal
• the three-phase supply has a maximum unbalance be-
tween phases of 3%
• the appliance operates within the recommended operat-
ing conditions (see technical specifications table)
• the hydraulic circuit is completely deaerated
• the air-to-water heat pump performs a shutdown and
subsequent restart
Thermal gradient
Check that the thermal gradient between the plant delivery
and return is between 4-7°C by querying parameters PT5-M
and PT6-M.
Set a lower circulator speed if the thermal gradient is less
than 4 °C.
If the thermal gradient is greater than 7 °C check that all the
valves on the plant are open and if necessary add an external
pump to increase the water flow rate.
If the mains pressure exceeds 3 bar, install a pressure reducer
on the filling line.
Pressure drop
The maximum permissible pressure drops are shown in
chapter "PP1 primary circulation pump graphs"
p. 68
.