EVCO EPH4DXP1CT Installer manual - Manual (Page 71)

Evco S.p.A. c-pro 3 CLIMA sistema | Installer manual ver.1.1 | Code 144CP3CSE114
page 71 of 74
8.6 Other regulations
8.6.1 Management and setting of the periodic anti-grip cycle (MCCT,
MCPS modules)
The function has the purpose of preventing the blocking of the pumps and valves present in the c-pro 3 CLIMA
sistema during system standstill due to any deposits present in the system or due to the formation of crystalline
aggregates (lime scale or other) on the mechanical seals of the pumps and valves.
The function automatically activates all pumps and valves in sequence once a week, which have been at a standstill for
at least a week.
The day and time of weekly activation can be set by the user via the relevant Maintenance technician parameters.
The sequence scans the various utilities in the system every minute (pumps and valves): the cycle leads to the
activation of the element considered for 30 seconds.
The enabling and setting of the periodic anti-grip cycle is set separately on the thermal power plant c-pro 3 mega
MCCT controller and on the c-pro 3 hecto MCPS module for solar panels, respectively for the following utilities:
MCCT regulator anti-grip : delivery 1 circulation pump if enabled from parameter
delivery 1 mixing valve if enabled from parameter
delivery 2 circulation pump if enabled from parameter
delivery 2 mixing valve if enabled from parameter
MCPS regulator anti-grip : DHW circuit circulation pump always enabled
AUX1 circuit circulation pump always enabled
solar panels 1 circuit circulation pump always enabled
solar panels 2 circuit circulation pump always enabled
8.6.2 Management of the circulation pumps protection digital input
(MCCT, MCPS modules)
Every circulation pump present in the c-pro 3 CLIMA sistema has a protection digital input.
Every protection digital input linked to a circulation pump can be associated to one of the following functionalities,
depending on the value selected via the relevant parameters.
- THERMAL SWITCH: every activation of the digital input will cause the immediate deactivation of the relative
circulation pump.
Once the digital input is deactivated, the circulation pump will start to work according to its own regulation
(automatic rearm).
- FLOW: every activation of the digital input, after a delay time or from the activation of the pump (start) or
from the activation of the input itself (normal conditions), will cause the deactivation of the relative circulation
pump.
Once the digital input is deactivated, the circulation pump will start to work according to its own regulation
(automatic rearm) unless the maximum number of flow switch alarms is not reached for automatic rearm,
however the deactivation of the alarm will be possible only with manual procedure (manual rearm).
The regulation parameters relative to the delivery 1 and 2 circulation pumps are present in the MCCT thermal power
plant controller while the parameters relative to the circulation pumps of the auxiliary DHW circuit, solar panels 1 and
2 are present in the MCPS controller for solar panels.