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11 TEST RUN AND FINAL
CHECKS
The installer is obliged to verify correct operation of unit after
installation.
11.1 Final checks
Before switching on the unit, read following
recommendations:
•
When the complete installation and all necessary settings
have been carried out, close all front panels of the unit
and refit the unit cover.
•
The service panel of the switch box may only be opened
by a licensed electrician for
NOTE
That during the first running period of the unit,
required power input may be higher than stated on the
nameplate of the unit. This phenomenon originates from
the compressor that needs elapse of a 50 hours run in
period before reaching smooth operation and stable
power consumption.
11.2 Test run operation (manually)
If required, the installer can perform a manual test run
operation at any time to check correct operation of air purge,
heating, cooling and domestic water heating, refer to 10.7
Field settings/test run.
12 MAINTENANCE AND
SERVICE
In order to ensure optimal availability of the unit, a number of
checks and inspections on the unit and the field wiring have
to be carried out at regular intervals.
This maintenance needs to be carried out by your local
technician.
In order to ensure optimal availability of the unit, a number of
checks and inspections on the unit and the field wiring have
to be carried out at regular intervals.
This maintenance has to be carried out by your local
technician.
DANGER
ELECTRIC SHOCK
•
Before carrying out any maintenance or repairing
activity, must switch off the power supply on the
supply panel.
•
Do not touch any live part for 10 minutes after the
power supply is turned off.
•
The crank heater of compressor may operate even
in standby.
•
Please note that some sections of the electric
component box are hot.
•
Forbid touch any conductive parts.
•
Forbid rinse the unit. It may cause electric shock or
fire.
•
Forbid leave the unit unattended when service panel
is removed.
138
EN
OMNIA M 3.2
The following checks must be performed at least once a year
by qualified person.
•
Water pressure
Check the water pressure, if it is below 1 bar,fill water to
the system.
•
Water filter
Clean the water filter.
•
Water pressure relief valve
Check for correct operation of the pressure relief valve by
turning the black knob on the valve counter-clockWise:
-If you do not hear a clacking sound, contact your local
dealer.
-In case the water keeps running out of the unit, close
both the water inlet and outlet shut-off valves first and
then contact your local dealer.
•
Pressure relief valve hose
Check that the pressure relief valve hose is positioned
appropriately to drain the water.
•
Backup heater vessel insulation cover
Check that the backup heater insulation cover is fastened
tightly around the backup heater vessel.
•
Domestic hot water tank pressure relief valve (field
supply) Applies only to installations with a domestic hot
water tank. Check for correct operation of the pressure
relief valve on the domestic hot water tank.
•
Domestic hot water tank booster heater
Applies only to installations with a domestic hot water
tank. It is advisable to remove lime buildup on the booster
heater to extend its life span, especially in regions with
hard water. To do so, drain the domestic hot water tank,
remove the booster heater from the domestic hot water
tank and immerse in a bucket (or similar) with lime-
removing product for 24 hours.
•
Unit switch box
-Carry out a thorough visual inspection of the switch box
and look for obvious defects such as loose connections
or defective wiring.
-Check for correct operation of contactors with an ohm
meter. All contacts of these contactors must be in open
position.
Use of glycol (Refer to 9.3 Water pipework Caution: "Use
of glycol" ) Document the glycol concentration and the
pH-value in the system at least once a year.
-A PH-value below 8.0 indicates that a significant portion
of the inhibitor has been depleted and that more inhibitor
needs to be added.
-When the PH-value is below 7.0 then oxidation of the
glycol occurred, the system should be drained and
flushed thoroughly before severe damage occurs.
Make sure that the disposal of the glycol solution is done in
accordance with relevant local laws and regulations.
Cod. 3QE47660 - Rev. 00 - 02/2022
22T÷30T
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