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ENGLISH
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 recommenda- tions:
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 maintenance purposes.
That during the first running period of the unit, required power input
may be higher than stated on the nameplate of the unit. This pheno-
menon originates from the compressor that needs elapse of a 50 hours
run in period before reaching smooth operation and stable power con-
sumption.
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 pheno-
menon originates from the compressor that needs elapse of a 50 hours
run in period before reaching smooth operation and stable power con-
sumption.
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 10.5.11 “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 eld wiring have to be carried out
at regular intervals.
This maintenance needs to be carried out by your local technician.
b
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.
The following checks must be performed at least once a year by qua-
lied person
Water pressure
Check the water pressure, if it is below ! bat 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-o valves first and then contact your
local dealer.
Pressure relief valve hose
Check that the pressure relief valve hose is positioned appro-
priately to drain the water.
Backup heater (if present) 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 (eld supply) Ap
-
plies 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 defecti-
ve 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 9.4.4 "Water circuit anti-freeze pro
-
tection") Document the glycol concentration and the pH-valve in
the system at least once a year.
−
A PH-valve below 8.0 indicates that a signicant portion of the
inhibitor has been depleted and that more inhibitor needs to
be added.
−
When the PH-valve is below 7.0 then oxidation of the glycol
occurred, the system should be drained and ushed thoroughly
before severe damage occurs.
Make sure that the disposal of the glycol solution is done in accordan-
ce with relevant local laws and regulations.
13 TROUBLE SHOOTING
This section provides useful information for diagnosing and correcting
certain troubles which may occur in the unit.
This troubleshooting and related corrective actions may only be carri-
ed out by your local technician.
13.1 General guidelines
Before starting the troubleshooting procedure, carry out a thorough
visual inspection of the unit
and look for obvious defects such as loose connections or defective
wiring.
b
WARNING
When carrying out an inspection on the switch box of the unit, always
make sure that the main switch of the unit is switched off.
When a safety device was activated, stop the unit and nd out why the
safety device was activated before resetting it. Under no circumstan-
ces can safety devices be bridged or changed to a valve other than the
factory setting. If the cause of the problem cannot be found, call your
local dealer.
If the pressure relief valve is not working correctly and is to be repla-
ced, always reconnect the exible hose attached to the pressure relief
valve to avoid water dripping out of the unit!
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