Fast CSF21 Installation, Use And Maintenance Manual - Water Cassettes
INSTALLATION, OPERATION
AND MAINTENANCE GUIDE
WATER CASSETTES
lenta
Set
0
5
10
30
FAN
SPEED
Fig. 45
15
20
25
35
OFF
40
45
50
23
°C
COIL TEMPERATURE [Ti]
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
ON
OFF
ON
OFF
B
A
Fig. 44
AUTO
HIGH
MEDIUM
LOW
Fig. 46
6 Increases the minutes on the display.
7 Turns the cassette ON or OFF.
8 Activates or deactivates louver movement (optional).
9 Adjusts the louvers 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 one events:
a) Condensate drain pan float:
Remedy: check the condensate drainage circuit (pump, float, drain hoses).
2) The SLEEP indicator lights blink continuously. This type of alarm
is generated by one events:
a) Coil water temperature above 80 °C.
Remedy: check coil water temperature.
3) 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.
4) TIMER indicator light blinks continuously (fig. 44 A):
Air temperature sensor and water temperature sensor are damaged
or not connected.
5) 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.
CONDENSATE 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 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.
If Ti<23°C, fan is OFF.
If 23 If Ti>35°C, fan runs at setted speed. ELECTRICAL CHARACTERISTICS Power supply1Ph from 185 to 255 VAC, 50/60Hz Power consumption Less than 8 VA in stand-by Valve activation time delay3 minuts ± 5 seconds Temperature: Room temperature accuracy±1°C Coil temperature accuracy±2°C Storage temperature 0¸70°C Operating temperature 10¸80°C Setting temperature range 18¸30°C (+1°C step) ON/OFF temperature differential 1°C 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 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 The writing FAN appears on the air-conditioner control display. In this mode the unit operates as a fan only. The SLEEP, TEMP and TEMP buttons are not used. COOL The writing COOL appears on the air-conditioner control display. The unit operates in the air-conditioning mode. - the zone valve starts if Troom Tset+1 - the zone valve stops if Troom Tset In any case activation of the zone valve is subject to 3 minutes delay each time it stops. DRY The writing DRY appears on the air-conditioner control display. The unit FAN COOL DRY HEAT AUTO Fig. 47 16