VTR 100B LITE Installation and Service manual v2

Operation
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39
Menu Level 1 Menu Level 2 Menu Level 3 Explanation
Functions
DI 4–7
DI 4–7
4 Stop heat
5 Ext run
6 Damper/Rotor
7 Home/Leave
DI 4–7 are default set from
factory and can’t be changed by
the user. Below follows a short
description of each function.
DI4: Makes it possible to disable
the electrical re-heater.
Activated input means that the
electrical/other re-heater is
deactivated.
DI5: Activate the Extended/
forced running function. The
function overrides current set
airflow settings and runs
according to the settings in
Service-> Ext/Force run.
Choose between Low, Nom and
High for this function. The input
is calculated based on the
signals from an impulse-switch.
If a standard switch is used, the
countdown of the set time starts
when the switch is switched off.
DI6 for rotating heat exchanger:
Rotor sensor. Used by the
system to monitor the rotor
rotation.
DI6 for counter flow heat
exchanger:
Bypass damper limit switch.
Used by the system to detect
the damper position.
DI7: Activates low energy
support control. Heat exchanger
operating by the adjusted
setpoint value and a active re-
heater has support control for
the lowest setpoint. (12 °C)
The function is used when the
building is uninhabited for a
longer period.
It is recommended to connect
DI7 and DI1 or DI3 in parallel. If
DI7 is activated, set the fans
speed to min. Airflow settings
are done when configuring DI1/
DI3.
212962 | v02