Doc: 70-00-0958A V1.0, 20221102 © Vector Controls GmbH, Switzerland Page 21-34
Subject to change without notice www.vectorcontrols.com
5.6.5 3-position valve control
The 3-position valve is controlled by DO1 and DO2. DO1 is used to open the valve while DO2 is used to close the valve.
When activating the 3-position valve, DO2 is on for two times the 3-position valve running time to ensure the valve is fully
closed.
5.6.6 Modulating valve control
The modulating valve is controlled by an analog output. There are two possible output ranges, 0-10V and 2-10V. The
different modulating valve types can be chosen with P203 (2 equals 0-10V, 3 leads to 2-10V).
5.6.7 Fan extension time for electric heater
When the electric heater is switched off, the fan keeps running for the time specified in P202 to avoid over-heating of the
electric heater.
The analog fan keeps running at 20% of range for the specified time.
5.6.8 Periodic fan kick
The periodic fan kick is disabled by default settings. The periodic fan kick is only available with a 3-stage fan (P207 = 3).
In automatic fan mode, if the fan speed is 0, the fan will be set to fan speed 1 periodically with the time defined with
P212. The fan runs after this period for the minimum on time for fan speeds (P208).
5.6.9 Floor heating system with or without floor temperature limitation
Detailed explanation of floor temperature limitation is given in chapter 5.9 Temperature and digital inputs, page 28.
The floor heating system can be configured with or without floor temperature limitation.
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