Configuration Manual

Version Document
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001
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ccess V4.X Configuration manual
39 (56) 2018-07-11
Configue: Configuration > Function Configuration > Pretreatment
Pretreatment activation during free cooling
 No
 Yes
Control of dampers and pump for preheated or pre-cooled outdoor air via an
underground intake channel. The digital output ”Pretreatment” is set to preheating
when the unit is started and the outdoor temperature is below the set heating start
limit (default 8°C) or to precooling when the outdoor temperature is above the set
cooling start limit (default 19°C).
If the outdoor temperature exceeds the set heating start limit by more than 1°C
(fixed), preheating will be aborted, as well as if the outdoor temperature falls below
the cooling start limit by 1°C.
If a sensor is configured in the intake duct (”intaketemp”) this temperature will be
compared with the outdoor temperature. If the temperature in the intake duct does
not exceed the outdoor temperature by more than 1°C (adjustable) 5 minutes
(adjustable) after start-up when using preheating, preheating will be aborted. The
same conditions apply to precooling, i.e. if the intake temperature is not more than
1°C (adjustable) cooler than the outdoor temperature, precooling will be aborted.
Pretreatment always starts at start-up of the unit, if the outdoor temperature so
permits. If pretreatment is aborted due to a small difference between the intake
temperature and the outdoor temperature, pretreatment will be blocked for 6
hours. Then pretreatment will start (if the outdoor temperature so permits) and run
for at least 5 minutes (adjustable)
Operation settings: Data & Settings > Temperature control > Pretreatment
Extra controller
Activate: Configuration > Function Configuration > Function Activation
 No
 Yes
Configure: Configuration > Function Configuration > Extra controller
Start/Stop function extra controller
 Off
 Always running
 Running if unit is running
 Defrosting
Control mode extra controller
 Heating
 Cooling
An independent temperature control circuit for control of for example after-heaters.
The circuit can be configured to heating or cooling. It has an analogue input signal
for temperature sensors and an analogue output signal 0…10 V. There is also a
digital output signal which is activated when the analogue output signal is above 1
V and deactivated when the analogue signal is below 0.1 V. The circuit can be
configured to be active all the time or to be active only when the main unit is
running at normal speed.