MZ3-C-FA-V11
Doc: 70-00-0995A V2.5, 20230123
© Vector Controls GmbH, Switzerland
Page 1-8
Subject to alternation
www.vectorcontrols.com
MZ3-C-FA-V11
Controller/positioner for comfort ventilation
with integrated CO2 sensor
Function
•
Positioner and controller for comfort ventilation with touch panel
•
Internal CO2 sensor for air quality measurement
•
Manual operation with up to 4 Levels, OFF, minimum air, 1st Level, 2nd
Level, maximum air
•
AUTO level mode: The controller switches the ventilation according to
adjustable levels of the CO2 sensor value.
•
AUTO continuous mode: The controller adjusts the ventilation level
gradually between adjustable minimum and maximum according to CO2
sensor value
•
One 0…10 VDC controls output to control the ventilation system
•
Automatic reset of the maximum air level (standard: level 0 after 120
min.)
•
Password protected controls settings
•
Copy of settings with accessory (AEC-PM2)
Applications
This device is designed to control ventilation systems for comfort applications. For example, for well insulated residential
areas which are required to be ventilated or for controlling dampers, valve drives, blinds or windows, etc.
General description
The MZ3-C-FA-V11 is a microprocessor-controlled precision positioner / proportional controller with touch panel. Through
user and engineering parameters the positioner may be configured to work for most of the standard ventilation
applications. The device is pre-configured according to this documentation. Settings such as switching levels of the control
curve and ventilation strengths for each Level may be adjusted. The configuration may be performed using the
programming device called OPA-S. This device may be used as well to visualize measuring values. Configuration can as
well be updated using a remote memory device called AEC-PM2.
CO2 sensor
The CO2 concentration is measured by photoacoustic sensor technology PASens® with automatic background calibration
algorithm (ASC). The measurement technology used guarantees high reliability and long-term stability. The sensor has a
pressure dependence (atmospheric pressure), therefore the altitude above sea level can be optionally adjusted to achieve
even better accuracy. The microprocessor measures the CO2 concentration once per second and calculates the signal
value from a number of measured values.
Automatic CO2 background calibration (ASC)
Background Calibration (ASC) is turned on by default and constantly monitors the measured CO2 concentrations. The
calibration function expects the CO2 concentration to periodically drop to fresh air levels of 400 ppm. Over a period of
several days, the controller attempts to gradually reach this value by recalibrating a maximum of 30ppm per day.
To achieve the specified accuracy, it is necessary for the sensor to run continuously without power interruption for at least
3 weeks.
For special applications such as greenhouses, animal farms, etc., ASC calibration should be disabled and the sensor
calibrated manually. The automatic calibration ASC can be deactivated via the external operating terminal OPA-S. The
sensor can be calibrated by the customer and does not have to be sent in for calibration.
For more information on manual calibration, see section "Calibration" page 7.
Safety
DANGER! Safety note
This device serves as an actuator or proportional controller for ventilation systems. Where a control failure would
result in personal injury and/or property damage, it is the responsibility of the customer, designer and installer to
install additional equipment and devices that will prevent a control failure or warn if limits are exceeded.
The device contains electronic components and must not be disposed of with household waste.
