EVCO EPH4DXP1CT Installer manual - Manual (Page 60)

Evco S.p.A. c-pro 3 CLIMA sistema | Installer manual ver.1.1 | Code 144CP3CSE114
page 60 of 74
8.1.4.2 Variation of the zone work set-point for "manual compensation" (MCZN
module)
By activating the work set-point variation function for “manual compensation” by installing a remote set-point variator
it is possible (e.g. the EVTP010V01 accessory), to allow the final user to increase/lower the active zone work set-point
within the pre-established limits, by simply acting on the pocoveriometer distinguished by the + / - indication.
Remote set-point variator
EVTP010V01
The system installer/maintenance technician must enable and set the function features from parameter, i.e.:
- set the room work set-point minimum and maximum variation values
- enable and set the presence of the remote set-point variator
- calibrate the movement of the potentiometer for 3 basic positions, i.e. maximum negative variation, neutral
(0°C variation) and maximum positive variation.
Calibration procedure
- access the remote set-point variator calibration screen
MCZN: Installer Menu Zone A(B) Zone A(B) setup R.Set calibr.
- position the cursor on position P1
- move the pocoveriometer into the negative set-point maximum variation position (the display will show the
number of points read by the pocoveriometer)
- press ENTER to calibrate the first calibration point
- position the cursor on position P2
- move the pocoveriometer into the neutral position (variation of 0°C set-point, the display will show the
number of points read by the pocoveriometer)
- press ENTER to calibrate the second calibration point
- position the cursor on position P3
- move the pocoveriometer into the positive set-point maximum variation position (the display will show the
number of points read by the pocoveriometer)
- press ENTER to calibrate the third and last calibration point
8.1.5 Zone anti-freeze protection (MCZN module)
During the winter functioning mode when the system is not running (i.e. in OFF state or with time bands enabled but
in a day when the system is off), however an zone anti-freeze protection control remains active
If the zone room temperature goes below the anti-freeze set-point, the system will however function (activating the
zone manifolds, the circulation pump of the associated delivery line, the heat pump or the boiler if necessary), in order
to guarantee a minimum temperature in the room and so as not to risk compromising the good functioning of the
system due to frozen piping.