43
• all control wires are connected and all electrical con-
• the control panel has been installed and connected
correctly
Refrigeration
• the refrigerant connections have been made accord-
ing to the instructions in the manual
• the hydraulic circuit interception valves are open
4�2�2 Water quality checks
The technician must measure the reference values of the
water in the system with special test kits.
Take the necessary steps to achieve the indicated lim-
its 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
aqueduct should always be carefully analysed. If nec-
essary, condition with appropriate treatment systems.
If a softener is installed, in addition to following the
manufacturer's instructions, adjust the outlet water
hardness to not less than 5 °F (by performing pH and
salinity tests) and check the outlet chloride concentra-
tion after adjusting the resins.
4�2�3 Powering up
Power up the unit for at least 12 hours before
starting.
Start the unit:
–
The display will light up a few seconds after power-up,
button to put it in Standby.
Refer to the Control Panel Manual for operation.
4�2�4 Start-up
up.
To activate the device
– press the key
The symbol or lights up
Functional checks:
•
• check that the appliance performs a shutdown and
subsequent restart
•
it restarts correctly
Carry out the measurements indicated on the Test
Refer to the Control Panel Manual to carry out the op-
erations.
During start-up, the primary pump must be operated in
-
ting).
-
the operating set point values.
Intervention ALRM 010
If the alarm ALRM 010 appears after the start-up of the cir-
culation pump, check that:
• the plant valves are open
• there is at least one consumer with an open circuit
•
• there are no air bubbles inside the circuit
• the water pressure of the plant is correct
If necessary, rearm the alarm.
4�2�5 Checks with the machine switched
on
After starting up, check that
Functional
• the appliance operates within the recommended op-
switch
the water supply is correct (see chapter "Thermal gradi-
ent" p.43)
Electrics
• the current draw of the compressor is lower than the
-
ble
• the supply voltage value is within the set limits and
does not fall below the nominal value during com-
pressor operation -10 %
Hydraulics
• the hydraulic circuit is completely deaerated (see
chapter "Presence of air" p.43)
Thermal gradient
• 100% compressor capacity
• all distribution valves open
• all consumers on
• any secondary pumps in operation switched on and
calibrated, see chapter "Circulation pumps optional
kits" p.62
Check that the thermal gradient between the plant delivery
and return is between 4-7°C by querying parameters PT5-S
and PT6-S.
-
er circulator speed, see chapter "PP1 primary circulation
pump" p.44.
If the thermal gradient is greater than 7 °C check that all
the valves on the plant are open and if necessary add an
If the mains pressure exceeds 3 bar, install a pressure re-
Presence of air
Check that no air pockets are still present once the electri-
cal connections have been established and the circulation
pump has been switched on.
In the presence of air pockets:
• stop the pump several times
• vent again
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