SAVE VTC 500 SERVICE AND ACCESSORIES INSTALLATIONV01 20210316

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| Configuration
Table 3 Digital outputs available for selection
Step Controller Y1 Heating
Step Controller Y3 Cooling
Step Controller Y4 Extra
Controller
Heater/Cooler/Extra controller control signals.
Sum Alarm Fault indicating output.
Outdoor-/Exhaust Air
Damper
Outdoor-/Exhaust air damper control signal.
Secondary air Secondary air damper control.
Activate Cooling Cooling mode activation signal to an external system.
Interlock External fan control
Automatic indication about prohibited external fan control (i.e. if defrosting is
activated).
Start/Stop Circ. Pump, Y1
Heating
Start/Stop Circ. Pump, Y3
Cooling
Start/Stop Circ. Pump,Y1/3
Change-over
Start/Stop Circ. Pump, Y4
Extra Controller
Start/Stop signal to the circulation pump of the Heating/Cooling/Extra controller.
Week schedule -
Unscheduled
Digital output signal activated during unscheduled week period.
Week schedule - Scheduled Digital output signal activated during scheduled week period.
Unit Status OK
Digital output signal is activated if there are no active or unacknowledged alarms.
Fan output PWM (Pulse-width modulation) signal and triac output are already pre-addressed to specific terminals and
cannot be changed, all other outputs are free for configuration by commissioning. Outputs are free to be used for any
purpose.
Digital outputs are restricted by signal type and physical number of connections.
An output function is only allowed to be used once. Already used and configured terminal is greyed-out in the menu for
output type selection.
Analog and digital outputs have a selection for Auto/Manual modes and an adjustable value for Manual mode.
Manual mode selection overwrites all system related automatic functions. Analog output adjustable manual value
range is 0–10V and digital output values On/Off.
Table 4 Overview of output configuration
Analog outputs Digital outputs
Output type
Auto/Manual
Value
Output type
Auto/Manual
Value
3.5.6.3 Components
Configuration of connected components.
Heat Exchanger
• Choose heat exchanger type.
• Activate or deactivate passive house function if heat exchanger type Rotating is selected.
Options: Yes / No.
• Choose bypass damper location if heat exchanger type Plate is selected. Default setting is based on unit type.
Supply / Extract
• Set actuator type. Default setting is based on unit type.
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