Function; Operating Modes; Heating / Cooling (Automatic Mode) - Rehau NEA SMART 2.0 Service Manual

4 FUNCTION

In the following chapters you will find the description of all general and
optional function of the system. The
is determined by the installed components and the system settings
selected during commissioning or at a later stage.
The behaviour of the system
All parameters can be modified by the installer or maintenance
company, a subset of the parameters also by the user of the system.
At the end of each chapter there is an information block
with the icon
which describes the path for web page or NEA SMART 2.0
App, starting from the main menu to the sub-menu containing
the relevant parameters for the specific function:
Examples:
Web page:
Home  Installer  Settings  Heating / Cooling
App:
Settings  Heating / Cooling
All parameters have a default setting (factory setting), and may be
changed only in a certain range.
A complete list of parameters you can find in chapter "9 PARAMETER".
4.1

Operating modes

Introduction:
The term "operating mode" describes a combination of settings
selected via NEA SMART 2.0 App or web page.
The 1st setting determines the
Heating cooling automatic activation
or or
The 2nd setting determines which
it is selected:
Temperature level permanently
timing program, STANDBY, HOLIDAY
18
range of these functionalities
is determined by the parameter settings.
overall operating mode of the system:
heating / cooling.
of
energy level
is selected and
NORMAL REDUCED
or or selected by
or PARTY mode.
4.1.1

Heating / Cooling (automatic mode)

This mode is only possible in installations, where the system is
capable to control the complete installation and has information about
outside temperature (outside probe connected or weather information
from internet service). During the setup sequence the installer may
enable this option.
In this mode, the system changes automatically between the general
operating mode heating, cooling and inactive.
HEATING mode
Activation of
- heating limit applied on filtered outside temperature
- hysteresis for heating limit
- heating period definition
- room temperature in pilot rooms
- time since last active cooling mode
Activation of COOLING mode
- cooling criterion, calculated out of: filtered outside temperature,
actual outside temperature, temperature conditions in pilot rooms
- cooling period definition
- time since last active heating mode
Both modes are subject to a minimum running time.
Activation of both modes is also influenced by
- the general energy level of the installation.
- external signals HEATING or COOLING coming from a super
ordinated system like a central heating/cooling source (e.g. a heat
pump), a BMS or from a simple switch which allows or blocks
heating or cooling mode.
See also table 4-1 for activation of operating modes..
Relevant parameters
Webseite:
Home  Installer  Settings  Heating / Cooling Settings
App:
Settings  Heating / Cooling
how
depends on
depends on