28
CONTROL SYSTEM
Heating and cooling circuits
The controller of the heat pump is able to manage up to
two zones
:
-
zone 1
: heating and cooling
-
zone 2
: only heating
The management of further zones, possibile by means of additional zone controllers, is not treated in this manual.
For each zone can be set :
- set point
- daily or weekly operating time table
- climatic curve
- room control sensor
The management of such zonesis performed by means of
three
independent
distribution circuits
.
The heating circuit 1 and the cooling circuit 1 control the same plant components (pump and mixing valve). Such circuits can be ma-
naged either as unmixed circuits or as mixed circuits (in this case for the mixing valve management the installation of a temperature
sensor on the flow of the circuit is necessary).
Function
Distribution circuit
Zone 1
Heating
and cooling
HC1
Heating circuit 1
mixed
CC1
Cooling circuit 1
mixed
Zone 2
Heating
HCP
Heating circuit P
NOT mixed
Zone 1
HC1/CC1
HCP
Zone 2
Remote control
40
Room unit 1
42
HC1
Remote thermostat
ru
3 (HCP)
Zone 1
HC1/CC1
HCP
Zone 2
Remote
thermostat
Remote
control
User
interface
User interface
40
Operator unit 1
42
HC1 + HCP
-
Climatic control based only on the outdoor air temperature
The management of each zone can be realized by means of :
The room temperature detection is not required. The plant ma-
nagement is realized only through the unit user interface. The
flow water temperature of each circuit is calculated by means of
independent climatic curves for each distribution circuit.
-
Climatic control based on the outdoor air temperature and on the room temperature
A room unit (a remote control or a remote thermostat) is requi-
red for each zone in order to detect the room temperature and
to modify the flow water temperature of each circuit, calculated
according to the climatic curves, with the possibility to define a
relative weight to the influence of the outdoor air temperature
and of the room temperature.
