Air Design HCV32N Manuale di installazione, uso e manutenzione - Pagina 16
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Activates the SLEEP mode. This mode automatically adjusts the temperature
in order to provide maximum comfort during the nighttime hours and save
energy.
5
Increases the hours on the display.
6
Increases the minutes on the display.
7
Turns the cassette ON or OFF.
8
Activates or deactivates louvre movement (optional).
9
Adjusts the louvres in order to direct the airflow in the best direction (optional).
10 Selects the exact time on the remote control display.
11 Sets timed switching off.
12 Sets timed switching on.
WALL-MOUNTED CONTROL OPERATIONS
Self-diagnosis
The system comes with a self-diagnosis circuit to monitor the microprocessor
functions. In the event of malfunction this circuit automatically resets the
microprocessor.
System memory
The system stores the set parameters (such as the operating status, fan speed,
etc.) in its non-volatile storage. After a power failure, the cassette will automatically
resume operation with the same parameters that were set prior to the blackout
(except the SLEEP and TIMER modes which will be erased). Any change to the
parameters will be saved in the non-volatile storage after 5 seconds.
Situation of normal operation
The POWER indicator light is on if the cassette was switched on via the I.R.
remote control.
The TIMER indicator light is on if the AUTO START and AUTO STOP modes
are active.
The SLEEP indicator light shows the temperature compensation during the
SLEEP mode.
Situation of alarm
1) The POWER, SLEEP and TIMER indicator lights blink continuously. The
system is protected by the cutting off of power to all the outputs.
This type of alarm is generated by two events:
a) Condensate drain pan float:
16
Remedy: check the condensate drainage circuit (pump, float, drain hoses).
b) Coil water temperature above 80 °C.
Remedy: check coil water temperature.
2) POWER indicator light blinks continuously. This type of alarm is generated
by two events:
a) When 3 minutes have elapsed from the start of the COOL or DRY cycles,
coil temperature is above 25° C. The system is protected by the cutting off
of power to the valve output.
Remedy: check the coil water temperature and correct valve operation.
b) When 3 minutes have elapsed from the start of the HEAT cycle, coil
temperature is not above 20° C. The system is protected by the cutting off
of power to the valve output.
Remedy: check the coil water temperature and correct valve operation.
3) TIMER indicator light blinks continuously (fig. 44 A):
Air temperature sensor and water temperature sensor are damaged or not
connected.
4) TIMER indicator light blinks intermittently (fig. 44 B): the filters must be
cleaned.
When the cassette has been operating for more than 500 hours, a warning is
displayed as a reminder to clean the filter.
!
N.B. Reset by cutting off the power for at least 10 seconds.
A
B
ONDENSATE DRAIN PUMP OPERATION SPECIFICATIONS
Cool Unit in operation: the pump operates continuously until the set temperature
is reached; when 3 minutes have elapsed from the start of the cycle, if the water
reaches the float and opens its contact, the unit instantly shows an alarm through
the fast blinking of the indicator lights Con the panel (the power is cut off to all
the outputs). Unit switched off by remote control, or with set temperature
s e r i e s
CSVN
HCVN
ON
OFF
ON
OFF
Fig. 44
>>
INSTALLATION, USE AND
MAINTENANCE GUIDE
satisfied, or within 3 minutes preceding cycle start: when the water reaches the
float, its contact opens and activates the pump for 3 minutes; when the 3 minutes
have elapsed, if the float does not close its contact again (water drainage), the
unit shows an alarm (fast blinking of the indicator lights).
Dry As for cool.
Heat - Unit in operation or switched off by remote control: the pump is never
activated.
Fan As for heat.
Cool-heat (automatic)
If the unit is in the cool mode, the pump follows the cool operation.
If the unit is in the heat mode, the pump follows the heat operation.
PRE-HEATING FUNCTION
Pre-heating function is used to avoid cold air in HEAT mode when the valve is
open. The valve remains open also if within 3 minutes the coil temperature has
not reached the 35°C
FAN
SPEED
SET
LOW
OFF
0
5
10
15
20
23
If Ti<23°C, fan is OFF.
If 23<Ti<35°C, fan runs at minimum speed
If Ti>35°C, fan runs at setted speed.
ELECTRICAL CHARACTERISTICS
Power supply
Power consumption
Valve activation time delay
Temperature:
Room temperature accuracy
Coil temperature accuracy
Storage temperature
Operating temperature
Setting temperature range
ON/OFF temperature differential
DETAILS OF WALL-MOUNTED CONTROL
The following commands be given by the buttons on the eall-mounted control.
Switching on/off
Press the POWER button to switch the cassette on or off. When the system
has been switched on, it will operate according to the settings shown on
the display. The POWER indicator light on the display comes on.
Fan
Press the FAN button to select the fan speed (high, medium, low or auto
mode). The display instantly shows the operating status.
AUTO
HIGH
Auto mode
When the fan speed is set in the auto mode, the speed is adjusted
automatically according to the difference between the room temperature
and the set temperature:
If the difference is 3°C or more, the speed is HIGH;
If the difference is 2°C, the speed is MEDIUM;
If the difference is 1°C or less, the speed is LOW;
Note: the FAN button is only active in the FAN, COOL, HEAT and AUTO
modes. It cannot be used in the DRY (dehumidifying) mode.
OPERATING MODE
FAN
COOL
DRY
FAN
The writing FAN appears on the air-conditioner control display. In this mode
the unit operates as a fan only. The SLEEP, TEMP
are not used.
Fig. 45
25
30
35
40
45
50
COIL TEMPERATURE [Ti]
1Ph from 185 to 255 VAC, 50/60Hz
Less than 8 VA in stand-by
3 minuts ± 5 seconds
±1°C
±2°C
0¸70°C
10¸80°C
18¸30°C (+1°C step)
MEDIUM
LOW
Fig. 46
HEAT
AUTO
Fig. 47
and TEMP
buttons
°C
1°C