11
Fig. 5 External connection box and board
Position
Description
1
Connection to the main circuit board
2
Connection for external control panel (HMI) or Internet access module (IAM)
3
Modbus RS485 connection
AI6–7
Freely configurable Analog input. None/Input type selection in HMI.
DO1–4
Freely configurable digital output.
DO2 default configuration: Outdoor-/Exhaust Air Damper
DO3 default configuration: Activate Cooling
DO4 default configuration: Sum Alarm
AO3–5
Freely configurable analog output. Actuator type 0–10V, 10–0V, 2–10V, 10–2V.
AO3 default configuration: Heating (only for VTC 200/300/500/700, VTR 100/700 type models).
AO4 default configuration: Cooling
UI1–5
Freely configurable universal input. Can be set as analog input (0–10 V) or a digital input (24 V).
UI1 default configuration: Pressure guard
UI2 default configuration: Cooker hood
UI3 default configuration: Fire alarm
UI4 default configuration: Refresh
24V
Maximum current 200mA at 24VDC +-10%.
8
Before Starting the System
When the installation is completed, check that:
• The unit is installed in accordance with the instructions
• Outdoor and exhaust air dampers and silencers are installed and that the duct system is correctly connected to the
unit
• All ducts are sufficiently insulated and installed according to local rules and regulations
• Outdoor air intake is positioned with sufficient distance to pollution sources (kitchen ventilator exhaust, central vac-
uum system exhaust or similar)
• All external equipment is connected
• The unit is correctly wired
9
Commissioning
Follow the first startup instructions and fill in the
Commissioning record
as you go through the settings.
The Startup Wizard cannot be skipped.
254496 | v01
