SAVE VTR 150K SERVICE AND ACCESSORIES INSTALLATIONV01 20210316

28
|
Service
Fig. 8 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%.
4.5 Replacing rotor drive belt
If the alarm Rotor guard is raised, see chapter 3.5.2.3, the rotor drive belt may be damaged or broken.
A spare drive belt is already placed on the heat exchanger rotor and delivered with the unit.
| v1.1