RHOSS TXAEY 245 Gebrauchsanweisung Seite 57

II.8.1 CONFIGURATION
Safet y component calibration settings
Pressure switch Cut-in
high pressure 40.2 bar
low pressure
water differential 80 mbar
Safety val ve 41.7 bar
DANGER !
The safet y valve is calibr ated to 41.7 bar. It could
cut in if the calibr ation valve is reached during the
refrigerant charging operations, cau sing a burst
that could cau se scalding.
Configuration parameter s
Summer worki ng temper ature set poi nt
Winter working temperature s et poi nt
Recover y wor king temperature s et point
Wor king and rec over y temperature differenti al
Antifreeze temper ature set poi nt
Antifreeze temper ature differential
Water differenti al press ure s witch time upon start-up
Water differential pressure s witch exclusion time upon start-up
Circulation pump s witch off time delay
Minimum time between two c onsec uti ve compress or start-ups
The units are tested in the fac tor y, where they are also c alibrated and
the default par ameter s ettings are put in. These guarantee that the
appliances r un c orrectly in rated wor king conditions . The machi ne
configuration is carried out in the factor y and should never be altered.
II.8.3 START-UP PROCEDURE
IMPORTANT !
The unit must be started up for the fir st time b y
skilled technicians only, qualified to wor k on
conditioning and refrig erant units.
II.8.3.1 General unit conditions
Have the technical clearanc e distanc es indicated in the manual been
Are the finned coils fr ee fr om obs tructions?
Are the fan grilles free from obstructions?
Is the unit damaged due to transport/installation?
The gener al conditions of the unit ar e compliant !
Reset
28.1 bar - Manual
2 bar 3.3 bar – Automatic
105 mbar - Automatic
-
Standard setting
START
respected?
YES
YES
YES
NO
IMPORTANT !
If a unit is used for the production of chilled water,
check the adjustment of the thermostatic valve.
II.8.2 UNIT S TART-UP AND S TARTUP AFTER
PROLONGED SHUTDOWN
DANGER !
Always use the switch to isolate the unit from the
mains b efore carr ying out an y mainten ance work,
even if it is for inspection purposes only. Make sur e
that no one accidentally supplies po wer to the
machine, lock the m ains switch in the OFF position.
12°C
Befor e starti ng the unit, perfor m the following chec ks :
40°C ○ The el ectricity power suppl y must c ompl y with the specifications on
40°C the data plate and/or the wiring diagram and it must fall within the
2°C followi ng limits:
• Variation of the power suppl y frequenc y: ±2 Hz.
3°C
• variation of the power suppl y voltage: ±10% of the nominal voltage;
2°C
• imbal ance between the suppl y phas es: <2% .
120"
○ the electrical power s uppl y s ys tem must be able to suppl y adequate
15"
current and be suitabl y sized to handle the load;
15"
○ open the electric panel and make s ure the terminals of the power
360"
suppl y and of the c ontactors are tight (they may have c ome loose
during trans port, which c ould lead to malfunctions);
Electrical connec tions must be made in compliance with the l ocal
installation standards i n force in the plac e where the unit is i nstalled,
and with the i nstructions in the wiring diagram provided with the unit.
Once the unit installation and c onnecti on operations have been
completed, it can be started up for the first time.
For a correct first start-up of the unit c arefully follow the diagrams
provided in the following paragraphs.
NO
NO
NO
YES
57
Restore the indicated tec hnic al spaces.
Clean the finned c oils.
Remove the obstr uctions .
Danger ! D o not start the unit! Restore
the unit!
SECTION I: USER