Bosch ACC MT, Installation Instructions Manual

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Product Information
5 Air Center Control – 6720892132 (2021/10)
2 Product Information
2.1 Product Description
The Air Flux product series is an air-conditioning system
solution for commercial buildings, e.g. offices, hotels or
apartment complexes.
The variable refrigerant flow central controller with ACC MT
(Air Center Control) touch screen – referred to as "central
controller" in this document – plays a key role in the operation
of the air-conditioning system. The central controller is
primarily designed to be used and operated by professional
users in the area of HVAC technology who are authorised to
make more in-depth system settings.
The central controller controls up to 32 outdoor or 64 indoor
units (or other units of the type ERV, AF-HB or AHU SET) via an
XYE communication cable. Up to 128 outdoor units with up to
256 indoor units (or other units of the type ERV, AF-HB or AHU
SET) can be controlled via 4 XYE cables in total using an
optional expansion board. The outdoor and indoor units
communicate via the PQE protocol.
The central controller can be operated via 3 different user
levels or user roles:
•
User
• Expert
• Administrator
Users with the role of “User” can control indoor units either
individually or as a group via the central controller. These users
can only perform the most important basic settings.
Users with the role of “Expert”, e. g. Facility Manager, can
access functions in the central controller such as grouping of
indoor units, user management, assignment of user roles and
advanced settings for time programs and diagnostics.
Persons with the “Administrator” user role have unrestricted
rights and can manage the rights of other users.
The central controller can be connected to a commercially-
available PC via a local network (LAN).
Additionally, a connection to building management systems of
third-party providers can be established via Modbus/TCP.
Connections, to fire-alarm call points or emergency flasher
systems for example, can be established via additional
interfaces such as digital inputs and outputs.
1)
To protect against unauthorised access to the central controller
from the Internet:
▶ Use suitable firewall (

Figure 1, page 6).
1) Function depends on which version of the central
controller is used