Outdoor Sensor; Room Thermostat And/Or Room Control Unit - Fujitsu 112 Installation And Operating Manual

Heat pump split single service 3 phase

Outdoor sensor

Room thermostat
circuit 1
2
1
Room thermostat
circuit 2
2
1
or
Room control unit
G+
3
CL-
2
CL+
1
* If the control device does not provide a potential-free contact, the contact must be relayed to create equivalent wiring.
In all cases, please refer to the instruction manuals for the external components (load limiting device, power meters) to create the wiring.
Figure 38 - Connections to the heat pump regulator (accessories and options)
2 10 Outdoor sensor
The outdoor sensor is required for the heat pump to
operate correctly.
Consult the fitting instructions on the sensor's
packaging.
Place the sensor on the coldest part, generally the
northern or north-eastern side.
In any case, it must not be exposed to the morning
sun.
It must be installed so as to be easily accessible but at
least 2,5 m from the floor.
It is essential that it avoid any sources of heat such as
flues, the upper parts of doors and windows, proximity
to extraction vents, the underneath of balconies and
under-eave areas which would isolate the sensor from
variations in the outdoor air temperature.
- Connect the outdoor sensor to the M and B9 terminals
on the heat pump control board.
Installation and operating manual "1364 - EN"
M
B9
CL-
EX6
CL+
EX5
CL-
CL+
EX4
5 7
2 11 Room thermostat
The room thermostat (room control unit) is optional.
Consult the fitting instructions on the sensor's
packaging.
The sensor must be installed in the living room area on
a very uncluttered wall, 1,5 m above the floor.
Avoid direct sources of heat (chimney/flue, television,
cooking hobs), draughty areas (ventilation, door, etc.).
Air leaks in the seals in the constructions are often
translated into cold air blowing through the electrical
conduits. Lag the electrical conduits if there is a cold
draught on the back of the IR sensor.
• Installation equipped with two room thermostats.
- Connect each of the sensors to one of the CL+ or CL-
terminals on the heat pump control board using the
connector supplied.
• Installation equipped with a room thermostat and a
room control unit.
- Connect the sensor to one of the CL+ or CL- terminals
on the heat pump control board.
- Connect the room control unit to the other CL+, CL-
terminals and to G+.
External fault
Tariffs, day / night,
peak times/off-peak times
Power shedding
or EJP (peak day removal)
External component contact*
(faults, load shedder, power meter)
and/or room control unit
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