MCZ Hydrotherm 70 - Manual (Page 21)

INSTALLATION AND USE MANUAL
Chapter 4
page
21
Installation and assembly Technical service – MCZ GROUP S.p.A. all rights reserved - Reproduction prohibited
4.5.3. Operation of the control unit MCZ
ON/OFF:
The control unit is turned on/off by pressing the P4 button for a
prolonged time (ON/OFF)
The OFF status is signalled by the lighting of the OFF LED
MAIN MENU:
Setting the THERMOSTATS for the operation of the controlled
outputs:
1. PUMP thermostat: to control the operation of the system pump
2. VALV thermostat: to directly control the solenoid valve or
another application
3. AUX thermostat: to integrate the gas boiler, solenoid valve
control or another application
How to change them:
 By simply clicking the P1 (MENU) button, the values of the set
Thermostat scroll, as signalled by the flashing of the associated
PUMP / VALV / AUX LED
 To make a change move to the value of the Thermostat to be
changed
 Change the value using the buttons P3(+) and P2(-)
 To save the change wait about 5 seconds or scroll the values
with the button P1(MENU)
Main menu
parameters:
Min.
Default
values
Max
PUMP thermostat 20 40 85
VALV thermostat 20 40 85
AUX thermostat 20 40 85
ALARM FUNCTION:
If the temperature read by the PROBE exceeds the value of the Alarm
Thermostat
A01:
 an acoustic and visual signal is triggered
 SILENCE function: the acoustic signal may be deactivated for 5
minutes by pressing any button.
 After this time, if the alarm condition persists, the acoustic signal
is triggered again.
If the PROBE does not work and/or the Lo alarm appears:
 an out of range downwards is signalled (Temperature below
0°C): Probe interrupted
If the PROBE does not work and/or the Hi alarm appears:
 Hi: indicates an out of range upwards (Temperature above
100°C): Probe in short circuit