Daikin EWYD360BZSL handleiding
Handleiding
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The compressor will not be allowed to load up to the discharge superheat exceeds a set value
(default 12.2 °C, 22 F) for a time longer than a set value (default 30 sec) .
6.8.1.
Fan pre-starting in heating mode
When the unit is operated in heating mode, if the outside ambient temperature is lower than
an fixed threshold of 10.0°C (50.0F) before the compressor is started and the start-up procedure is
initiated all fans are started with a constant delay between each other.
6.8.2.
Prepurge procedure with electronic expansion
At the compressor start the EEXV are completely closed up to the saturated temperature at
the evaporator pressure reaches the value of –10 °C (14 F) (adjustable in the range –12
÷
-4 °C
(10.4
÷
24.8 F) ), then the valve are opened at a fixed position (adjustable by the manufacturer with
a default value equal to 20%) up to a timer is expired (default 30 sec).
6.8.3.
Prepurge procedure with thermostatic expansion
At the compressor start the liquid line solenoid is completely closed up to the saturated
temperature at the evaporator pressure reaches the value of –10°C (14 F) (adjustable in the range –
12
÷
-4 °C (10.4
÷
24.8 F)), then the valve is opened up to a timer is expired; this procedure is
repeated for a number of times adjustable by the operator (default is 1 time).
6.8.4.
Oil heating
The startup of compressors will not be allowed if the following formula is not respected:
DischTemp – TOilPress > 5 °C
Where:
DischTemp is the compressor discharge temperature
TOilPress is the saturated temperature at the oil pressure
6.9. Pumpdown
As a compressor stop request is recorded (and if the request doesn’t originate from an
alarm), before to proceed, the compressor is fully discharged and operated for a certain amount of
time with a closed expansion valve (in the case of electronic expansion valve) or closed liquid line
valve (in the case of thermostatic expansion valve).
This operation, known as “pumpdown”, is used to evacuate the evaporator avoiding that in a
following restart the compressor will such liquid.
Pumpdown procedure will end after a user defined timer is expired (adjustable, default 30
sec.) or the saturated temperature at the evaporator pressure reaches the value of –10°C (adjustable
in the range –12
÷
-4 °C (10.4
÷
24.8 F) ).
After compressor stop the unloading solenoid valve are energized for a time equal to the
minimum compressor off time to assure the complete unloading also in case of non-normal stop
procedure completion.
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Productinformatie
| Merk | Daikin |
| Model | EWYD360BZSL |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 10110 MB |
