1.96
Climate Controller Type 148941 / Type 148942 / Type 148943 / Type 148944
Operation manual
19
•
Dewpoint contact
•
Presence contact
•
Key card switch
•
On / Off
•
Day / Eco
•
Condensation alarm
•
Unit frost protection
•
Room frost protection
•
Motor fault
•
Filter alert
•
General error
The Climate Controllers with Modbus interface (type 148943 and
148944) only have input 1 (universal/potential-free) and input 3
(230 V). Input 2 is used as a Modbus interface.
8.4.1 External sensor
If an external temperature sensor is connected to input 1, the thermostat
regulates based on the measured value of the external sensor.
8.4.2 Intake sensor
If an
intake sensor is configured, the “Minimal” parameter in the "Fan control
General" menu must be at least 20% to ensure continuous fan operation.
8.4.3 Changeover DI
The digital input can be used to switch between heating and cooling mode in
a 2-pipe system. Only the heating or cooling controller is enabled in the
Climate Controller depending on the contact.
8.4.4 Changeover sensor
The changeover sensor can be used for automatic switching between heating
and cooling mode in a 2-pipe system. The sensor can be connected to input
1. If the temperature is below 19°C, the controller is in cooling mode, and if
the temperature is above 29°C the controller is in heating mode.
A 3-way valve needs to be installed when using a clip-on sensor
for heating/cooling changeover!
8.4.5 Window contact
Temperature control is disabled when a window contact is enabled. Only the
protection functions (frost protection, heat protection) remain enabled.
8.4.6 Dewpoint contact
If the dewpoint contact is enabled, the cooling controller is locked and the fan
disabled.
