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MYLOS
Building Automation
®
7.3
Controller
The ambient temperature controller can be used for heating only, cooling only or for heating and cooling.
If the ambient temperature controller is to be used for heating and cooling, it can switch automatically from heating to
cooling and cooling to heating. The controller automatically detects whether it must send a control value for heating
or cooling. If automatic switching is not wanted, switching between heating and cooling can be done by an external,
central controller using the 1-bit object "switchover heating/cooling. In this setup, the heat and cooling icons are
continuously displayed in the respective mode. The object is enabled by the parameter "switching between heating
and cooling".
The control value that is sent for heating and/or cooling can be sent on a common communication object "control
value heating/cooling" or two separate communication objects "control value heating" or "control value cooling". If
a common object is used, it may be necessary to inform the actuator whether the control value refers to heating or
cooling.
The parameter "switchover between heating and cooling" can be enabled with the setting "automatic and send" a
1-bit communication object "switchover heating/cooling". If heating operating mode is enabled, a "1" is sent to the
bus and if cooling operating mode is enabled, a "0" is sent.
A common communication object for heating and cooling is required to actuate 2-pipe systems, i.e. heating and
cooling modes use the same pipes. Two single communication objects are used in 4-pipe systems, which have
separate pipes for heating and cooling.
The parameter "number of output channels" defines whether an object ("1 channel (2-pipe system) for heating and
cooling") or two objects ("2 channels (4-pipe system) for heating and cooling") are to be shown.
Separate control types can be parametrised for heating and cooling.
One of the following control types can be selected:
- 2-point
- PWM
- continuous
- Fan Coil
The individual control types are described below in more detail.
66 Planning and use | MYLOS
®
Building Automation
Planning and use
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