Operation Manual

5.2.2. Forced mode operation
If an IDU is defined as a priority unit, the operational mode (Cool/Heat) will be defined according to the priority unit request.
If no unit is selected (as the default value) the first unit turned on determines the unit mode.
Setup the Forced Mode dry contact to
the required mode as per the following:
Open-Cool
Shorted-Heat
Cool open
Heat - shorted
When "Forced Mode" dry contact is shorted, the unit will be forced to heat mode.
5.3.1. Night mode qui t operation (Cool Mode)e
5.3. Features setup with Dry Contacts (Inputs)
The 'Input' Dry contacts are used for controlling.
An external circuitry, which may include a switch or a relay, should be used for closing the internal circuit to indicate that
some change is required.
A solid wires and not stranded one is recommended to be used and up to 0.5 mm .
2
NO external power should be used in this case!
Open-Normal operation
Shorted- Qui t operatione
When "Night" dry contact is shorted, the unit will enter to a special night mode and reduce the compressor and
outdoor fan speeds to allow qui t operation.e
5.3.2. Standby
Open-Normal operation
Shorted Unit in standby
When "Standby" dry contact is shorted, the unit will stopped and stay in standby.