iSMA-B-FCU Quick Start-up
www.ismacontrolli.com
DMP245en | 1st Issue rev. 1 | 04/2022
page 14 of 56
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Figure 6. 2 stages of cooling in 2-pipe FCU installation
For more information on configuring stages of cooling, check the iSMA-B-FCU Application
manual.
3.7 Step 6: Selecting Type of Control Required by the FCU Valves and
Connection Details
The figure belowThe
controller’s
outputs can operate in digital or analog mode.
Depending on the fan coil unit actuators control type, the corresponding DIP switch has
to be set to a desired position.
The figure below pictures the connection of heating actuators:
A1 for analog 0-10 V control;
TO1 for analog PWM or digital ON-OFF control;
O4 for digital ON-OFF control.
