Controller Operation Strategy - Dantherm Flexibox 810 indoor Service Manual

Controller operation strategy

Introduction
Main decisions
Function strategy
With AC
22
The controller is pre-programmed from factory with default parameters covering the
most common setup. These can be changed to specific needs. In order to do so, it's
mandatory to know how these affect each other.
When installing the Flexibox it's imperative to decide if the Flexibox system needs addi-
tional AC connected or not, as this influences quite a lot on the cooling strategy. When
setting the parameter 13 in AC section of the parameters and connecting an AC, the ex-
ternal AC will be used for cooling when either the outside temperature is too high for
free cooling OR the indoor temperature rises above setpoint ( cT0 )
This shows the universal controllers operation mode depending on temperature.
( Compressor mode isn't present in Flexibox) :
Function
Dampers Close
ON
OFF
Dampers Open
Free cooling mode
Active cooling mode
dTs
Dampers Closed
Temperature
[°C]
Continued overleaf