5.3 Operating modes
Adjust setting
P3
as shown in the table below depending on your system and the desired operating mode.
TU = terminal units such as fan coil units and radiators
RFHC = radiant floor heating and cooling system
In the case of special applications (industrial, process) or to disable adjusting the system based on the ambient temperature,
adjust setting P4 to ‘0’. In a TU or TU+RFH configuration (P3 = 0) the setpoint displayed will therefore be
a water return
setpoint.
Note:
changing modes will cause the compressor to turn off first.
5.4 Auxiliaries
Setting P6 is used to configure the type of auxiliary installed. It also is used to define the type of
bypass (see “Bypass via
On/Off input” section).
Adjusting setting
P6
Note:
Auxiliaries are not allowed:
1 - if P06 = 0 or if P99 = 0
2 - if the unit is stopped by a water flow rate fault (d3)
3 - if there is a water inlet sensor fault (d4.2)
Auxiliaries are allowed:
1 - 80 seconds after the compressor starts
2 - if the compressor is not available (above cases excluded)
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P6
Auxiliary configuration
Bypass type (by opening of contact on terminal block J2 - terminals 4 and 5)
0
No auxiliary units
Heat pump turned off
1
Electric auxiliary units
Only electric auxiliary units turned off
2
Electric auxiliary units
Heat pump and electric auxiliary units turned off
3
Boiler auxiliary controlled by its own control system
Heat pump turned off and boiler turned on (e.g. offsetting of peak days scheme in France)
4
Boiler auxiliary controlled by its own control system
Heat pump and boiler turned off
(e.g. turning off entire heating system by remote control)
5
Boiler auxiliary controlled by the
Microconnect unit
Heat pump turned off and boiler turned on
in control stage 1 (e.g. offsetting of peak days scheme in France)
TU system
TU + RFHC system
RFHC system
P03 = 0
P03 = 0
P03 = 1
You
want to
cool
your
home
COOLING
mode
This mode
is enabled if
P36 = 1 and
disabled
if P36 = 0
The room temperature setpoint is displayed on the terminal unit /
The unit will adjust the temperature based on the room temperature setpoint and the out-
door temperature.
Slope adjustment:
The unit will begin cooling once the
room temperature is higher than the
room temperature setpoint.
Comment: given the limitations
of radiant floor systems, this is
a type of cooling (no more than
3/4°C than a home without a radiant
floor system).
You
want to
heat
your
home
HEATING
mode
The room temperature setpoint is displayed on the terminal unit /
The maximum water return setpoint is limited to 49°C without auxiliary heating, 55°C with
electric auxiliary units and 70°C with an auxiliary boiler
The maximum water return setpoint
is limited to 40°C
You
want to
heat during
freezing
weather
only
FROST
PROTECTION
mode
This mode is activated when the outdoor temperature drops below 10°C. Heating is maintained until
the frost protection setpoint is reached.
Heating provided primarily by the heat pump
(auxiliaries may however be used)
Heating provided by auxiliaries.
If no auxiliaries are used, heating is
provided by the heat pump with a
minimum water return temperature of
21°C and using the economy
setpoint if P1 = 0
P10
P13
P14
P12
Water return (°C)
Outdoor temperature (°C)
P18
P19
P17
Water return (°C)
Outdoor
temperature (°C)
P15 or
P16 if setpoint 2
