SIMPLY INIMITABLE.
14
14
PWM control in heating mode: Control logic for a 3 speed fan coil in heating:
When temperature increasing
Fan coil is a device that controls the ow of cooling /
heating liquid driving a valve (2-pipe fan coil) or two
valves (4-pipe fan coil).
Liquid exchanges heat/cool with the environment
through a ventilation system controlled by a fan. The
fan is driven by an engine that typically has 3 windin-
gs that can be enabled at 3 distinct speeds.
Where:
Tsp : Target setpoint temperature
Tdrv1 : regulation di erential in heating for V1 Speed
Tdrv2 : regulation di erential in heating for V2 Speed
Tm : Actual measured temperature
17. Fan coil on/o
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