MAXA i-32V5C MIDI 0121 - Continuous Operation; Operation on Call by Temperature Controller; Operating on Call by Temperature Controller with Periodic Activation; Operation with Integration Resistor Active

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Controllo per i-32V5 MIDI Air/water inverter chillers and heat pumps with axial fans
NOTE:
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


CONTINUOUS OPERATION
The factory conguraon of the unit is for connuous operaon (P03 = 0). In this mode, the circulator is only switched o with the unit in OFF,
in all other cases it is on. When the unit goes into stand-by, the circulator is switched o with a delay that can be set by parameter P02 in tenths
of a minute (default P02 = 20, i.e. 2 minutes).
OPERATION ON CALL BY TEMPERATURE CONTROLLER
Subsequently, the compressor is also switched on, aer a delay me of P01 seconds (default P01 = 30) since the pump was switched on. In the
switch-o phase, the pump is switched o with a delay me of P02 minutes (default P02 = 2) from the switch-o of the compressor.
OPERATION ON CALL FROM TEMPERATURE CONTROLLER
Temperature controller
ON
OFF
�me
Compressor
�me
Pump
�me
P01
P02
ON
OFF
ON
OFF
OPERATING ON CALL BY TEMPERATURE CONTROLLER WITH PERIODIC ACTIVATION
With P03 = 1, you can also congure the circulator to run periodically according to the following parameters:
• P16 = Periodic acvaon me interval (in minutes)
• P17 = Pump acvaon me (in seconds)
In pracce, when the pump is turned o for sased thermoregulaon, the countdown dened by parameter P16 begins and at each interval of
me P16 the circulator is turned on for a me equal to P17 seconds.
The funcon is disabled with P17 = 0 (default). The periodic funcon is suspended in the case of anfreeze mode intervenon.
OPERATION WITH INTEGRATION RESISTOR ACTIVE
If parameter r33 > 0, the circulator can also be switched on when the system and/or sanitary heang element is acvated.
ANTIFREEZE HYDRAULIC PUMP OPERATION
In this mode, the circulator is always on. Anfreeze operaon is enabled if the control temperature falls below P04 (default P04 = 5.0°C), it is
disabled if the control temperature rises above P04 + P05 °C (default P05 = 2.0°C).
PROPORTIONAL REGULATION
In cooling or heang mode, the speed of circulator changes depending on the temperature dierence between the inlet water and outlet water
of the heat exchanger according to the diagram below, where:
• P06 = Set ΔT water inlet/outlet in heang mode (default P06 = 4,0°C)
• P07 = Maximum speed (100%)
• P08 = Minimum speed
• P09 = Set ΔT water inlet/outlet in cooling mode (default P09 = 2,0°C)
• P10 = Modulang pump Delta (default P10 = 3,0°C)