EVCO EPH4DXP1SA - Manual (Page 28)

EVCO S.p.A. c-pro 3 hecto MCSA | User manual ver. 2.0 | Code 144MCSAE204
page 28 of 52
5. Regulations
5.1 Regulation of the zone temperature
5.1.1 Regulation principle
Depending on the system operating mode (summer or winter) and the time period active in each zone regulated by
the system (manual, economy, comfort in summer and manual, anti-freeze, economy, comfort in winter), when the
temperature detected by the environment probe is above (summer) or below (winter) the value of the active zone set-
point plus the differential value for that zone, the regulator will activate the corresponding zone heating/cooling
collector.
The activation of the collector automatically generates a flow pump activation request according to the enabling mode
(parameter PG02):
•
PG02 = 0 – pump not managed by MCSA
• PG02 = 1 – pump active on request of the regulator
• PG02 = 2 – pump always active
The pump is activated after a delay time (can be set from parameter) with respect to collector activation, activating
the system water pump and management of the mixing valve. Once the mixing valve is open, the consumption count
valve is activated.
After pump activation, the flow water temperature is controlled.
Whenever the flow water temperature does not satisfy the relative set-point, after a delay time set from parameter,
the heat pump/boiler activation control is activated in Winter mode (depending on the system) or the chiller is
activated in Summer mode.
For regulation of the flow water temperature, the mixing valve and the relative utilities for heating/cooling the water,
consult the relative paragraphs.
5.1.2 Management of the zone heating/cooling collectors
The zone heating/cooling collector is activated when:
Winter Operation: the environment temperature value is below the active environment set-point - hysteresis value
(differential)
Summer operating mode: the environment temperature value is over the active environment set-point + hysteresis
value (differential)
Every zone heating/cooling collector present in the system works independently and, once activated, generates a flow
pump activation request.
5.1.3 "Manual" or "Time period" operation mode
5.1.3.1 Manual Operation
Whenever the management of the time periods is not enabled by the User, the system works in MANUAL mode
(indicated with MAN on the zone page).
The system loads the ECONOMY work set point as default (both winter and summer). In this mode, a set-point
modification from user interface is maintained in the memory by MCSA in a dedicated variable (Manual Set).