EVCO c-pro CLIMA sistema Installer manual - Manual (Page 76)

C-PRO CLIMA SISTEMA INSTALLER MANUAL
Page 76
9.2.7 Dew point control (MCCT, MCZN modules)
During the SUMMER functioning mode, the work set-point of the mixing valve (or delivery valve)
will be continuously monitored and if necessary modified in order to check the dew point of each
individual active Zone.
The dew point is the temperature at which a mass of air must be cooled at constant pressure, so that
it becomes saturated (i.e. when the percentage of water vapour reaches 100%) and can therefore
start to condense if further heat is lost.
This would lead to the formation of dew in the cooled floor, thus compromising the integrity of the
controlled room.
Every active Zone, equipped with room temperature and humidity sensor, calculates the
temperature of its own dew point and sends this data to the thermal power plant.
Given the different zones associated to the specific delivery line the thermal power plant regulator
will consider the highest dew point value sent by the individual zones as the dew point of the entire
delivery line.
To consider the construction features of the system, the dew point will be raised by a predefined
offset that can be set by parameter.
The regulation set-point of the mixing valve (or delivery line) will be limited to the minimum value
given by the “delivery dew point + offset” calculated whenever necessary.
Important parameters:
MCCT: Maintenance Menu
Delivery lines 1(2) Temp. Regulation Dew offset
9.2.8 Control of the high and low delivery temperature (MCCT module)
Whenever the temperature of the delivery water exceeds or drops below the minimum and
maximum temperature values accepted for the system of the hysteresis value, then the c-pro mega
MCCT thermal power plant will start special management cycles for these emergencies:
- High temperature protection: the high temperature protection intervention will force the
immediate closure of the mixing valve in order to prevent overtemperatures in the controlled
system, until the temperature returns to the maximum values accepted for the system.
- Low temperature protection: After a fixed delay of 60 seconds, the intervention of the low
temperature protection will cause the activation of the delivery circulation pump in order to
ease heating of the water in the system. The pump will remain on until the minimum
temperature conditions are recovered.
Important parameters:
MCCT: Maintenance menu
Delivery lines 1(2) Temperature limits HT setpoint
MCCT: Maintenance menu Delivery lines 1(2) Temperature limits HT hyst.
MCCT: Maintenance menu Delivery lines 1(2) Temperature limits LT setpoint
MCCT: Maintenance menu Delivery lines 1(2) Temperature limits LT hyst.