oxycom 3800OXYSTD, Manual

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5.2 System status and settings
5.2.1 System characteristics
The system goes into adiabatic cooling mode when the following two conditions
are met:
-
Thermostat/Modbus Master/Pre-cooling input must be in cooling mode.
- The outdoor temperature is above the cooling release temperature.
When the system is in cooling mode:
Tank fill:
-
The drain valve closes and the water supply solenoid opens.
Level control is activated:
-
When level high is reached, the water supply solenoid closes.
- When level low is interrupted, the water supply solenoid opens.
When level high is reached, the pre-wet mode starts:
-
The pump and water disinfection are activated (incl. pump dry-run
protection).
- The fans are Off for 5 minutes.
When pre-wet is complete, the system will turn on the fans:
-
The water quality control is activated.
When the conductivity exceeds the setpoint, short drain is activated:
-
Water disinfection is deactivated.
- The pump is deactivated.
- The drain valve will open and all water will be drained. When the tank is
empty, the water supply solenoid will open for 10 seconds to flush the tank.
- When the tank is empty, the drain valve will be closed and the supply
solenoid opened to refill the tank until level high is reached.
When one of the 2 conditions for cooling ceases, the cooling mode is deactivated:
-
The drain delay timer is activated (60 minutes).
- If the system switches back to cooling within 60 minutes, it will use the water
that is still in the tank and continue the cooling mode.
- If the system does not switch back to cooling within 60 minutes, the tank is
drained and the hygiene dry cycle is activated.
Hygiene dry-out:
-
At midnight, when in cooling for longer than 24h, a hygiene dry-out cycle is
activated. The duration of this cycle is 60 minutes.
- This dry-out creates a bio-shock for most bacteria. Bacteria need a wet
environment to survive. The dry-out therefore reduces bacterial growth
significantly.
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