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b - Boiler controlled by the Microconnect microprocessor: P6 = 5
Application: boiler with basic control
When P6 is set to ‘5’, the burner and the heat pump are controlled by the Microconnect microprocessor using the water formu-
la entered in the terminal unit (settings P15 to P19). The room temperature is managed by the Microconnect terminal.
Heat pump and boiler operating ranges
5.5 On/Off control inputs
5-5-1 Turning off or “bypassing” your heat pump or the terminals via remote control
To turn off the heat pump and/or terminals remotely, remove the jumper on connector J2 terminals 4 and 5 from the
Microconnect board. Connect your contact between these two terminals.
Contact quality
: compatible with a 10 mA current at 24 V.
1: contact closed: normal operation
2: contact open: € symbol appears and bypass as indicated below.
HEATING MODE: the bypass depends on setting P6 (see the “Auxiliaries” section above”).
COOLING MODE: the unit turns off when the contact opens.
FROST PROTECTION MODE: no bypass
5-5-2 Turning on the frost protection via remote control: P2 = 2
To place your system in frost protection mode by remote control, adjust setting P2 to ‘2’. Connect a contact to connector J2 ter-
minals 3 and 5 on your unit’s Microconnect board.
Contact quality
: compatible with a 10 mA current at 24 V.
1: contact closed: operation determined by position of terminal dial
2: contact open: system forced to frost protection mode and the following is displayed:
5-5-3 Turning on cooling or heating mode remotely: P2=1
To activate heating or cooling mode remotely, adjust setting P2 to ‘1’. Connect a contact to connector J2 terminals 3 and 5 on
your unit’s Microconnect board.
Contact quality: compatible with a 10 mA current at 24 V.
1: contact closed: operation forced to heating mode and the following is displayed:
2: contact open: operation forced to cooling mode and the following is displayed:
Heat pump and boiler off
Boiler
only
Water return temperature (°C)
Heat pump off
Boiler
authorised
Heat pump off
Boiler
not authorised
Heat pump
+
Heat pump
only
Maximum temperature
back to heat pump
Max. heat pump
operation authorisation
temperature
Outdoor
temperature
Operating limits
Boiler
only
Heat pump
operation low limit
Programmed
auxiliary trigger
threshold
Miscellaneous:
•
The circulator will operate continuously: P34 forced to ‘1’ if P6 = 5
The control setpoint and, where applicable, the boiler operation authorisation symbol are displayed
Boiler operation authorised symbol
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