Hydronic Module (Fig. 9/10/11) - Galletti Inverter technology MCI Manual De Instalación

5.5 - Hydronic module (Fig. 9/10/11)

The MCI__H units are equipped with an integrated
hydronic module with a variable flows pump self-controlled
that allows fast installation with the aid of a few external
components. The MCI__X units, on the other hand, do not
have a circulation pump and expansion vessel.
For this reason, they must be provided outside. In any case,
all the necessary protections and valves are to be inserted in
Size 004-006-008
The operating red knob allows to set several pressure levels in 2 control modes :
- Variable differential pressure (Δp-v)
- Constant differential pressure (Δp-c)
Variable differential pressure (Δp-v)
Constant differential pressure (Δp-c)
Venting function
''Set Up'' procedure :
Factory pre-setting = Δp-c 8.
All functions can be set, activated or deactivated by using the operating red
knob:
- The control mode Δp-v is set on the left of the middle position (from 1 to 8).
- The control mode Δp-c is set on the right of the middle position (from 1 to 8).
- For venting the pump, turn the knob in its middle position (the venting function
is activated after 3 seconds and lasts 10 minutes before going to Δp-c max
mode).
NOTE:
- The variable pressure mode (Δp-v or PP) is recommended in heating systems with radiators.
- The constant pressure mode (Δp-c or CP) is recommended for underfloor-heating circuits.
- All hydronic curves (Fig. 14) have been defined in constant pressure mode for min, medium and max speed.
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the water circuit inside the unit.
Refer to Figure 9 for the exact connection of the water
pipes. Figures 10 and 11 describe the integrated components
in their various configurations.
NOTE: The correct dimensioning of the expansion vessel is
left to the installer as a function of the type of plant.
The user interface allows to select between 6 pressure levels in 2 control modes:
- 3 constant pressure/power curves (CP)
- 3 proportional pressure curves (PP)
Min flow=1 ; Max flow=3
''Set Up'' procedure :
1) Factory pre-setting
2) Push the button 10 sec
3) With each push the setting changes
4) After 10 sec not pushing the button
5) LED 1 or 2 or 3 is permanently shining
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Size 012-015
PP1 (flashing fast)
PP2 (flashing fast)
PP3 (flashing fast)
CP1 (flashing slow)
CP2 (flashing slow)
CP3 (flashing slow)
Constant Pressure Curve CP3
Pump goes to setting mode - LED starts
flashing
LED 1-2-3 shines / control curve and
mode is changing
Setting is adapted – pump goes back to
operation mode
Pump is running with the selected curve
and mode