ZoningBOX 6 / ZoningBOX 4
Technical Support:
17
2.2.3
MODE
Each HVAC unit works necessarily under one of the following operation modes at a
time, which therefore is applied to all zones included in its group:
Heating
: the unit will generate hot air to warm the zones. The grille control
will be intended to make the local reference temperature reach the zone
setpoint temperature.
Cooling
: the unit will generate cold air to refrigerate the zones. The grille
control will be intended to make the local reference temperature fall under the
zone setpoint temperature.
Fan
: the unit will generate an air flow at the ambient temperature. The grilles
of the enabled zones will remain open.
Dry
: the unit will generate a dry air flow to reduce the ambient humidity. The
grilles of the enabled zones will remain open as in Fan mode.
The operation mode of the HVAC unit will depend on the user needs. Therefore,
ZoningBOX incorporates specific
input objects
for each group of zones, which can be
linked to the above elements. It also incorporates
output objects
(status objects) to be
linked with the gateways of the HVAC units, so whenever ZoningBOX receives a mode
change order, it can be forwarded to the corresponding HVAC unit.
The following diagram illustrates this configuration.
The involved mode selection objects can be of different types:
Individual control (one bit)
:
one binary object is provided per mode,
together with their corresponding status objects.
Controller /
Thermostat
from Zone “x”
Zoning
Module
HVAC Unit
Gateway
Mode
Mode (Status)
Figure 15.
Mode control
