Ventus N-type NVS 080 User manual

Ventus Standard unit automation
Quick assembly, wiring and commissioning instruction
step by step

table of contents
1INTRODUCTION........................................................................................................................................3
2INSTALLATION OF AUTOMATION COMPONENTS AND WIRING................................................................ 3
2.1 POWER SUPPLY CIRCUITS FOR CONTROL PANEL COMPONENTS.............................................................................. 3
2.1.1 Control panel power supply circuits .................................................................................................. 3
2.1.2 Power supply circuits for electric heater and optional equipment outside the VTS offer.................. 5
2.2 CONTROL CIRCUITS -GENERAL INFORMATION................................................................................................... 6
2.2.1 Connection diagram for the uPC3 driver and extension module....................................................... 6
2.3 ANALOG AND DIGITAL (DISCRETE)CONTROL CIRCUITS....................................................................................... 10
2.3.1 Installation and connection of temperature sensors....................................................................... 10
2.3.2 Connecting filter pressure switches................................................................................................. 11
2.3.3 Connection of damper actuators (intake, exhaust, recirculation, by-pass)..................................... 11
2.3.4 Connection of water heater antifreeze thermostat......................................................................... 12
2.3.5 Connection of controls for electric pre-heater and re-heater.......................................................... 12
2.3.6 Connecting control for optional devices outside the VTS offer (condensing unit, humidifier, etc.). 12
2.4 COMPONENTS WITH MODBUS COMMUNICATION .......................................................................................... 12
2.4.1 Wiring used for ModBUS communication ....................................................................................... 15
2.4.2 PCB EC extension module with ModBUS communication ............................................................... 15
2.4.3 Pressure transmitters with ModBUS communication ..................................................................... 15
2.4.4 Humidity transmitters with ModBUS communication..................................................................... 17
2.4.5 CO2 transmitter with ModBUS communication .............................................................................. 17
2.4.6 Inverters (frequency converters) with ModBUS communication (for fans and rotary heat
exchanger).................................................................................................................................................... 18
2.4.7 EC motors of fan sets and rotary heat exchanger with ModBUS communication .......................... 20
3AHU OPERATION - GENERAL INFORMATION.......................................................................................... 20
4THE FIRST LAUNCH OF AHU, CONFIGURING BASIC PARAMETERS........................................................... 21
4.1 PRELIMINARY ACTIONS BEFORE STARTING AHU.............................................................................................. 21
4.2 AHU CONTROL WITH HMI ADVANCED ......................................................................................................... 21
4.2.1 Description of buttons and elements of the main display screen.................................................... 21
4.2.2 Logging in to the „Menu” module ................................................................................................... 23
4.3 SETTING THE CONTROLLER APPLICATION CODES .............................................................................................. 24
4.4 ACTIVATION OF CONTROLLER INPUTS AND OUTPUTS ........................................................................................ 26
4.5 SENSORS CALIBRATION............................................................................................................................... 27
4.6 OVERWRITING AND SIMULATING THE VALUES OF INPUT AND OUTPUT PARAMETERS OF THE CONTROLLER.................... 27
4.7 CONFIGURATION OF COMPONENTS WITH THE MODBUS PROTOCOL ................................................................... 27
4.7.1 Checking the correctness of setting general communication parameters ...................................... 28
4.7.2 Configuration of communication with inverters (in AHU with AC motors) ..................................... 28
4.7.3 Communication configuration with fans equipped with EC ............................................................ 28
4.7.4 Programming EC motors ................................................................................................................. 30
4.7.5 Configuration of communication with a rotary heat exchanger ..................................................... 31
5USE OF AHU ........................................................................................................................................... 32
5.1 SETTING THE OPERATIONAL PARAMETERS (TEMPERATURE,HUMIDITY,EFFICIENCY,ETC.)......................................... 32
5.2 SWITCHING ON THE AHU, CHANGING THE OPERATING MODES .......................................................................... 33
5.3 VIEWING CURRENT OPERATING PARAMETERS ................................................................................................. 34
5.4 ALARMS.................................................................................................................................................. 34
5.5 SETTING THE WEEKLY CLOCK ....................................................................................................................... 34

1Introduction
This manual is intended for customers who want to independently assembly, wire and commission
the factory VTS automation in the new VENTUS STANDARD air handling unit. The manual applies only
to air handling units with the configuration available in CCOL4, equipped with standard accessories
offered by VTS, which do not require changing advanced parameters of the control system.
This manual may be helpful when assembling and commissioning the automation in control panels
with unusual configurations or operating parameters, or cooperating with external accessories
outside the VTS offer, but then it is necessary to use the advanced instruction manual available on
the VTS website.
ATTENTION:
The ventilation unit control panel is a key element of the automation and is powered by dangerous
voltage 230 / 400V, just like the fan motors and other components of the unit. Therefore, activities
related to the assembly, wiring and commissioning of the said automation of VENTUS air handling
units may only be carried out by authorized persons in the scope of assembly and operation of
electrical devices in accordance with applicable regulations.
Independent assembly and commissioning of factory automation of VENTUS AHUs additionally
requires basic knowledge in the field of automation of air handling units.
2Installation of automation components and wiring
VTS factory automation is an optional equipment of offered control panels. Due to their wide
functional diversity and the need to adapt the location of the control cabinet to the site conditions,
the automation components are delivered to the customer separately for installation in the control
panel at its final location.
Installation of automation components should be carried out by persons with appropriate
qualifications and experience. Therefore, we will discuss only those elements that require special
attention.
The wiring elements are out of the VTS scope of delivery, therefore, for the correct and safe
functioning of the device, please strictly adhere to the recommendations as to the type and quality of
these elements.
Installation of automation begins with determining the location of the power supply and control
cabinet, which results from the object's conditions, the convenience of operating the control panel
and the user's preferences. It should be remembered that the control wiring should not be too long
to minimize the impact of interferences.
2.1 Power supply circuits for control panel components
2.1.1 Control panel power supply circuits
The control panel is powered by 1 x 230V / 50Hz or 3 x 400V / 50Hz voltage, depending on the load
power. The cross-section of the power cable should be adapted to the maximum load current.
In the supply cabinet before the control panel, a circuit breaker should be used, adapted to the cable
cross-section and control panel power, to meet the conditions of electric shock protection. The size
of the short circuit protection in the preceding cabinet should be selected in accordance with the
regulations by an authorized electrician. If RCCBs are used in the preceding cabinet, they must be
adapted to operate with frequency converters.
Fan sets (with EC or AC motors), rotary heat exchanger motor and water heater pump are powered
from the control panel. The control panel is equipped with overcurrent breakers to protect these

components. The cross-section of the power supply wiring for these components should be adapted
to the load current. Pay attention to the correct connection of this wiring, especially the PE cable.
AC motors (if used) are powered via frequency converters. EC motors are equipped with integrated
control systems. The power supply configuration of individual components for air handling units with
AC or EC motors is shown in Fig. 1a and 1b, respectively.
*) up to the size of the VVS300 unit, the exchanger is driven by an EC motor, for size VVS400 and
larger the exchanger is driven by an AC motor with an inverter
Fig. 1a Components supplied from the control panel (AHU with AC motors)
When using AC motors, frequency converters (inverters) should be installed in places not exposed to
moisture and mechanical damage, as close as possible to the fan units (preferably outside, on the
back of the fan sections), since the length of the cabling connecting the inverters to the motors
should not exceed 10 m (detailed data can be found in the tech specs of inverters). In the case of
external AHUs, the inverters should be installed in metal cabinets equipped with a heater and fan,
controlled by a thermostat to ensure a temperature in the vicinity of the inverters between -10 ° C
and + 40 ° C.

To connect the motors with frequency converters (inverters), shielded cables should be used with
cross-section adapted to the load currents. The shield should be connected to the "PE" terminal in
both inverters and motors.
To supply frequency converters (AC motors) or EC motor controllers use cables with 600V test
voltage.
Fig. 1b Components supplied from the control panel (AHU with EC motors)
2.1.2 Power supply circuits for electric heater and optional equipment outside the VTS offer
The electric heater and optional equipment outside the VTS offer (humidifier, refrigeration unit, etc.)
require a separate cable for supply (Fig. 2). In the preceding power cabinet, overcurrent breakers
should be used, adapted to the cable cross-section and heater power, so that the conditions of
electric shock protection are met. Use a cable with a cross-section adapted to the maximum power
of the heater, enabling the connection of a PE protective terminal.
Accessories and components outside the VTS offer should be connected in accordance with the
documentation of these devices.

Fig. 2 Accessories requiring a separate power supply
2.2 Control circuits - general information
2.2.1 Connection diagram for the uPC3 driver and extension module
Individual automation components communicate with the controller either using analog and digital
I/O, or using digital communication with the ModBUS protocol.
Some of the analog and digital inputs / outputs are implemented directly by the uPC3 controller and
some via extension boards (e.g. PCB EC).
Graphic illustration of the signal assignment to individual electronic modules is shown in Figure 3.
ATTENTION:
∙Depending on the application code entered, the controller dynamically sets the pin functionality.
Thus, a single physical output can perform various functionalities, e.g. as many as six different tasks
are assigned to two 0-10V analog outputs.
The reason for this solution is the universalism of VTS automation, enabling the use of the same
controller for tens of thousands of types of applications. Lack of static assignment of signals to
individual controller outputs prevents the publication of diagrams in the technical documentation
available on the VTS website. The diagram is generated dynamically with the selection card. If
required, it can be additionally generated by a sales representative or VTS Service Department.

Before starting the installation of the wiring, refer to the wiring diagram of the controller inputs and
outputs provided with the AHU.
Fig. 3. Connection of analog and digital (discrete) I/O signals
Fig. 4 shows a general connection diagram for the uPC3 controller and PCB EC module.
Fig. 5 shows an example diagram of connecting the controller I / O signals for a specific application.

Fig. 4. Connection diagram of the uPC3 controller and PCB EC module

Fig. 5. Example diagram of signal connection to the uPC3 controller and PCB EC module for a
control panel with FHPHCV / FVP configuration (application code
AP|1|1|0|1|0|0|0|6|3|0|0|0|0|0|1)

2.3 Analog and digital (discrete) control circuits
2.3.1 Installation and connection of temperature sensors
Connect the temperature sensors to the controller using shielded cables with a minimum cross-
section of 0.5 mm2. Location of temperature sensors:
B1 –supply air temperature. Installation in the supply air duct, approximately 2 m behind the heater
B2 –temperature in the exhaust duct or as a room sensor (cable length not greater than 100 m)
B3 –outside temperature in the intake duct
B4 –sensor responsible for protecting the heat recovery exchanger from frosting - location depends
on the type of exchanger. Particular attention should be paid to the correct location of the
temperature sensor protecting the rotary heat exchanger (Fig. 6). Incorrect location of this sensor
may lead to reduced AHU efficiency.
Fig 6a. Location of B4 sensor behind the rotary heat exchanger for the supply air track at the top or
bottom of the unit –AHU size from VVS21 to VVS300.