Pi Controller (Continuous) For Fan Coil - ABB i-bus FCC/S 1 1 Series Product Manual

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ABB i-bus KNX
Planning and application
• Electrothermal Valve Drive:
Depending on the manufacturer, it takes around 2 to 3 minutes to open a control valve with
electrothermal drive. A cycle time of 15 minutes has proven useful in practice. Other times must
be correspondingly adapted to the heating/cooling system.
• Floor heating:
The time constant of a floor heater is very large (sluggish). A cycle time of 20 minutes suffices.
• Water heating:
A cycle time of 15 minutes produces excellent control results.
• Electric convector heating:
Depending on the electric heating and the room situation, cycle times between 10 and 15 min-
utes are recommended.
12.5.4

PI controller (continuous) for Fan Coil

This controller works the same way as the PI controller (continuous). Additionally, however, the fan
output integrated into the device is controlled in order to control a fan coil unit.
FCC/S 1.X.X.1 | 2CDC 508 200 D0211 Rev A 370