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5
System Set Up
1-zone temperature control
Control option A
This option features the main remote controller and the Mitsubishi
Electric wireless remote controller. The wireless remote controller is
used to monitor room temperature and can be used to make
changes to the space heating settings, boost DHW and switch to
holiday mode without having to directly use the main remote
controller.
If more than one wireless remote controller is used, the most
recently requested temperature setting will commonly be applied to
all rooms by the central control system regardless of which wireless
remote controller was used. No hierarchy exists across these
remote controllers.
Wire the wireless receiver to FTC referring to the wireless remote
controller instruction manual. Turn DIP SW1-8 to ON. Before
operation configure the wireless remote controller to transmit and
receive data referring to the wireless remote controller installation
manual.
Control option B
This option features the main remote controller and the Mitsubishi
Electric thermistor wired to FTC. The thermistor is used to monitor
room temperature but can not make any changes in control
operation. Any changes to DHW must be made using the main
remote controller mounted on the heat pump unit.
Wire the thermistor to the TH1 connector on FTC.
The number of room temperature thermistors that can be
connected to FTC is always one.
Control option C
This option features the main remote controller being removed from
the heat pump unit and situated in a different room. A thermistor built
in the main remote controller can be used for monitoring the room
temperature for Auto Adaptation function whilst keeping all its fea-
tures of the main remote controller available.
The main remote controller and FTC are connected by a 2-core,
0.3 mm², non-polar cable (local supply) with a maximum length of
500 m.
To use the sensor in the main remote controller the main remote
controller should come off from the heat pump unit. Otherwise it will
detect the temperature of the heat pump unit instead of room tem-
perature. This will affect the output of the space heating.
Note: Wiring for main remote controller cable shall be (5 cm or more)
apart from power source wiring so that it is not influenced by
electrical noise from power source wiring. (Do NOT insert main
remote controller cable and power source wiring in the same
conduit.)
Control option D
This option features the main remote controller and a locally
supplied thermostat wired to FTC. The thermostat is used to set the
maximum temperature for heating room. Any changes to DHW
must be made using main remote controller mounted on the heat
pump unit.
The thermostat is wired to IN1 in TBI.1 on FTC. The number of
thermostats that can be connected to FTC is always one.
The wireless remote controller can be also used as a
thermostat.
Wireless receiver
(option)
C.B
FTC
Main remote
controller
Heat pump unit
C.B
FTC
Main remote
controller
Heat pump unit
C.B
FTC
Heat pump unit
C.B
FTC
Main remote
controller
Heat pump unit
Wireless
remote controller
(option)
20.0°C
20.0°C
Max. 8
20.0°C
20.0°C
Room
Room tempera-
ture thermistor
(option)
Room
Main remote
controller
(remote position)
Room
20.0°C
Room tempera-
ture thermostat
(local supply)
Room
32
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