Evco C-PRO CLIMA SYSTEMA Installer Manual page 73

9.2.2 Management of the utilities set-up for heating delivery water: boiler (and
During winter regulation, once the water has been put into circulation in the system, whenever the
delivery work set-point is not satisfied, the c-pro CLIMA system will send a request to the thermal
power plant controller for the activation of the utilities set-up for heating of the delivery water.
The MCCT thermal power plant regulator can control two different utilities to heat delivery water.
heat pump and a boiler.
Depending on the type of system, the two heating utilities can be present separately or at the same
time and will be managed in the following way:
• Management of the boiler: whenever the delivery temperature is below the Winter delivery
work set-point of the hysteresis value, then a boiler activation request will be sent.
Correct boiler functioning is controlled via a boiler block digital input which, whenever
activated, will block the utility immediately.
• Management of the heat pump: whenever the delivery temperature is below the Winter
delivery work set-point of the hysteresis value, then a heat pump activation request will be
sent.
Correct heat pump functioning is controlled via a chiller-heat pump digital input alarm
which, whenever activated, will block the utility immediately.
• Management of the boiler and the heat pump: whenever the delivery temperature is below the
Winter delivery work set-point of the hysteresis value, then a heat pump activation request
will be sent.
The heat pump will always have activation priority with respect to the boiler, which will
only be activated in the following cases, at the same time as the deactivation of the heat
pump.
1) Activation of the digital input for chiller-heat pump alarm:
2) External temperature below the value established with the relevant parameter (therefore
for low performance of the heat pump due to the low external temperature)
3) On reaching the number of continuous activation hours of the heat pump
Correct boiler functioning is always controlled via a boiler block digital input which,
whenever activated, will block the utility immediately.
In case N°3, the intervention of the digital input boiler block will cause the automatic reactivation
of the heat pump utility.
Important parameters:
MCCT: Installer menu
MCCT: Installer menu
MCCT: Installer menu
MCCT: Installer menu
MCCT: Maintenance Menu
C-PRO CLIMA SISTEMA INSTALLER MANUAL
heat pump (MCCT module)
General parameters
General parameters
General parameters
General parameters
Delivery lines
Enable boiler
CH-HP type
HP-Boiler switch
HP-Boiler switch
Pump management
Page 73
Switch temperature
Hysteresis
CH-HP delay