dixell ichill IC260L, Руководство пользователя

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1592015300 User manual iCHILL 200 L GB r1.3 09/09/2005
Pg.
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Having one compressor with 3 partializations, with CO07=2 when the compressor is off the partialization valve is always on, so as, in
case of start-up, it allows to have the minimum load. After the compressor is started the valve is on only for CO13 time and it won’t be
considered as regulation step. After the compressor stops running the time CO13 will be reloaded.
Having one compressor with 3 partializations, with
CO07=3 when the compressor is off the partialization valve is always on, so as, in
case of start-up, it allows to have the minimum load. After the compressor is started the valve is on for CO13 time but it will be
considered as regulation step. After the compressor stops running the time CO13 will be reloaded.
28.2 B
Y
- P
ASS
G
AS VALVE DURING COMPRESSOR START
-
UP
It allows to manage, with the partialization valve, also the valve to run the compressor with no load by-passing the circuit.
On time of the by-pass gas valve during the compressor start-up.
The funcrion is enabled if the CO13 <>0 and one of the relay output is configured as by-pass valve compressor 1, 2 ,3 or 4.
Functionning: When thermoregulation requires the relay is turned ON 1 second before turning in the compressor and goes off after the
time set in parameter CO13. After the compressor stops running the time CO13 will be reloaded.
28.3 S
OLENOID
V
ALVE
I
NTERMITTENT FOR
S
CREW
C
OMPRESSOR
If configured this output is ON when the compressor is ON (in case of Part Winding or Star-delta it corresponds with the first relay on)
for the time set in Par. CO08 and then OFF for the time set in Par. CO09. The cycle CO08 – CO09 of the valve is repeated until the
compressor is ON.
ATTENTION:
When the valve output is configured, the intermittent cycle is activated only if the Par. CO08 <> 0.
29 PUMP DOWN
The Pump down process is enabled only if the CO36 parameter is not equal to 0.
29.1 O
FF UNIT WITH
P
UMP
D
OWN AND WITH LOW PRESSURE SWITCH CONTROL
The process is enabled if the low pressure switch of the circuit is configured with parameter CO36 = 1 or 3 and one of the relay output is
configured as pump-down solenoid circuit 1 or 2. (CO36 = 2 or 4 are related to a pressure switch dedicated to this function or the
pressure transducer).
When the thermoregulation is going to stop, before turning off the last compressor, the solenoid valve is closed. The compressor runs
until the low pressure switch connected to the digital input becomes active for a maximum time set in CO39. In this case there is no Low
pressure alarm and no alarm message will be displayed, the digital input active function will disable the last running compressor. A
possible low pressure alarm could appear only if the digital input is still active after the AL02 time.
If the last compressor stops before the low pressure switch because of the CO39 time-out (maximum compressor on time after turning
off the P.D. solenoid valve), the ICHILL calculates the AL21 parameter (maximum number of pump down alarm per hour) and if an
alarm occurs the display will show the alarm code, the buzzer and the alarm relay will be on.
If the thermoregulation is stopped via digital input (as remote off) or from chiller/heat pump keys, during the pump down process the
chiller or the heat pump led will blink.
When the next thermoregulation restarts the PD solenoid valve turns on and after 1 seconds, if the low pressure switch is not active, the
compressors start.
For any compressor alarm events occur the procedure is stopped and the compressor will be stopped.
PAR. CO36 = 3 OFF UNIT WITH PUMP DOWN in CHILLER MODE (No PUMP – DOWN at START-UP)
In Heat pump mode the Pump down process is inhibited and the solenoid valve works in parallel with the compressor.
29.2 P
UMP
D
OWN WITH DEDICATED
P
RESSURE SWITCH
PAR.CO36 = 1 OFF UNIT WITH PUMP DOWN ( No PUMP – DOWN at START-UP)
The function is enabled if one relay output is configured as pump down solenoid valve for circuit 1 and 2 and one digital input as pump
down pressure switch of the circuit 1 and 2.
When the thermoregulation is going to stop, before turning off the last compressor, the solenoid valve is closed. The compressor runs
until the pump down pressure switch connected to the digital input becomes active for a maximum time set in CO39.
If the last compressor stops before the pump down pressure switch because of the CO39 time-out (maximum compressor on time after
turning off the P.D. solenoid valve), the ICHILL calculates the AL21 parameter (maximum number of pump down alarm per hour) and if
an alarm occurs the display will show the alarm code, the buzzer and the alarm relay will be on.
If the thermoregulation is stopped via digital input (as remote off) or from chiller/heat pump keys, during the pump down process the
chiller or the heat pump led will blink.
When the next thermoregulation restarts the PD solenoid valve turns on and after 1 seconds, if the low pressure switch is not active, the
compressors start.
For any compressor alarm events occur the procedure is stopped and the compressor will be stopped.
PAR. CO36 = 2 ON/OFF WITH PUMP DOWN
The function is enabled if one relay output is configured as pump down solenoid valve for circuit 1 and 2 and one digital input as pump
down pressure switch of the circuit 1 and 2. (CO36 = 2 or 4 are related to a pressure switch dedicated to this function or the pressure
transducer).
When the thermoregulation is going to stop, before turning off the last compressor, the solenoid valve is closed. The compressor runs
until the pump down pressure switch connected to the digital input becomes active for a maximum time set in CO39.
If the last compressor stops before the pump down pressure switch because of the CO39 time-out (maximum compressor on time after
turning off the P.D. solenoid valve), the ICHILL calculates the AL21 parameter (maximum number of pump down alarm per hour) and if
an alarm occurs the display will show the alarm code, the buzzer and the alarm relay will be on.