Hydronic Module - CIAT YUNA II Serie Manuel D'instructions

      
Please refer to the hydronic module documentation.
    
All outdoor and indoor fault codes are reported on the
user interface (see hydronic module documentation).
ѼÊÇÆÁ» ÅǼÍĽ
s #OMPLETE THE INSTALLATION OF THE HYDRONIC MODULE SEE
hydronic module documentation).
s 0ERFORM THE OPERATING TEST AFTER THE UNITS HAVE BEEN
installed in position and the gas leak test has been
completed.
    
Operating mode Type of safety device
Protection against excessively high heat
Heating
exchanger temperatures
Heating Outdoor heat exchanger defrost cycle
Cooling Indoor heat exchanger frost protection
Cooling or heating Delayed compressor start
IMPORTANT: During functioning in heat pump heating mode, the unit performs defrost cycles to eliminate any ice
that might form at low temperatures inside the outdoor unit.
   
The following maintenance operations must be carried out
BY QUALIlED PERSONNEL
Cleaning the coil
If necessary, proceed as follows for more careful cleaning
of the coil:
Switch the mains supply OFF.
2EMOVE UNIT TOP COVER BY LOSENING THE lXING SCREWS AND
lifting the cover. Carefully clean the coil with a vacuum
cleaner from inside to outside. With the same vacuum
cleaner, remove the dust from inside the fan compartment
and the fan blades. Avoid any damage to the blades which
may cause future vibrations and noise.
Replace the unit cover and tighten the screws.
s #HECK ALL ELECTRICAL CONNECTIONS INSTRUCTIONS AND
wiring diagram).
s #HECK ALL HYDRONIC CONNECTIONS
s %NERGISE THE SYSTEM TURNING ON ALL SWITCHES AND
brakers.
s 6ERIFY THAT THE USER INTERFACE IS OPERATING AND THERE
are no faults displayed.
Refer to the display manual for buttons and display
REFERENCES/NCE ALL THE FAULTS HAVE BEEN SOLVED CONlGURE
the system parameters (see hydronic module
documentation) and select the desired mode.
  
For pump down procedure refer to the R-410A -
Installation manual and the hydronic module
documentation.
What happens
Compressor operation frequency is reduced or
stopped altogether
À½ ÇÍ̼ÇÇÊ ÍÆÁÌ ¾¹ÆË ¹Ê½ ËÏÁÌ»À½¼ Ç
Compressor operation frequency is reduced or
stopped altogether
À½ »ÇÅÈʽËËÇÊ ¼Ç½Ë ÆÇÌ Ë̹ÊÌ ÁÅŽ¼Á¹Ì½ÄÑ ÏÀ½Æ ÌÀ½
¹ÈÈÄÁ¹Æ»½ ÁË ËÏÁÌ»À½¼ ÇÆ
   
System does not start:
s %LECTRICAL CONNECTIONS ARE WRONG OR INCOMPLETE lX
them.
s 3OME SWITCH OR BRAKER ARE IN THE /&& POSITION PLACE
them in the ON position.
s 7AIT FOR  MINUTES PROTECTION AGAINST FREQUENT
compressor cycling is ON.
s 3ELECTED TEMPERATURE IS LOWER THAN ACTUAL
temperature (or higher in cooling mode).
System is not supplying enough heating (or cooling) :
s !IR CANNOT CIRCULATE FREELY AROUND THE OUTDOOR UNIT
s $IRTY WATER lLTER IN THE HYDRONIC MODULE REDUCES
WATER mOW
s $OORS ANDOR WINDOWS ARE OPEN
s 0UMP SPEED IN THE HYDRONIC MODULE IS TO LOW 0UMP
speed must be changed by skilled personnel only.
s 3ELECTED TEMPERATURE IS NOT CORRECT
A slight whistling noise is heard when the outdoor unit
starts or stops :
s 4HIS IS DUE TO THE REFRIGERANT BEGINNING TO CIRCULATE OR
an adjustment of the refrigerant pressures. This is a
normal operating condition.
When the safety device trips
During functioning
During functioning
During functioning
On start-up or on mode change
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