Mitsubishi Electric PAC-IF081B-E Installation Manual page 17

4. Electrical work
2-zone temperature control
Control option A
This option features the main remote controller, the Mitsubishi Electric wireless remote
controller and a locally supplied thermostat.
The wireless remote controller is used to monitor the Zone 1 room temperature and the
thermostat is used to monitor the Zone 2 room temperature.
The thermostat can be also assigned to Zone 1 and the wireless remote controller to
Zone 2.
The wireless remote controller can be also used to make changes to the space heating
settings, boost DHW *1 and switch to holiday mode without having to use the main
remote controller.
If more than one wireless remote controller is used, the last temperature setting
adjustment/demand will be applied to all rooms in same zone.
Wire the wireless receiver to FTC (Main) 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 control-
ler installation manual.
The thermostat is used to set the maximum temperature for heating Zone 2 room.
The thermostat is wired to IN6 on FTC (Main). (If the thermostat is assigned to Zone 1,
it is wired to IN1 on TBI.1.) (Refer to 4.5.)
Control option B
This option features the main remote controller, the Mitsubishi Electric thermistor and a
locally supplied thermostat that are wired to FTC (Main).
The thermistor is used to monitor the Zone 1 room temperature and the thermostat is
used to control the Zone 2 room temperature.
The thermostat can be also assigned to Zone 1 and the thermistor to Zone 2.
The thermistor can not make any changes in control operation. Any changes to DHW *1
must be made using the main remote controller mounted on the FTC (Main).
Wire the thermistor to the CN20 connector on FTC (Main).
The number of room temperature thermistors that can be connected to FTC (Main) is
always one.
The thermostat is used to set the maximum temperature for heating Zone 2 room.
The thermostat is wired to IN6 on FTC (Main). (If the thermostat is assigned to Zone 1,
wire it to IN1 on TBI.1.) (Refer to 4.5.)
Control option C
This option features the main remote controller (with in-built thermistor) that is removed
from the FTC (Main) to monitor the Zone 1 room temperature and a locally supplied
thermostat to monitor the Zone 2 room temperature.
The thermostat can be also assigned to Zone 1 and the thermistor to Zone 2.
A thermistor built into the main remote controller can be used for monitoring the room
temperature for Auto Adaptation function whilst keeping all its features of the main re-
mote controller available.
The main remote controller and FTC (Main) are connected by a 2-core, 0.3 mm², non-
polar cable (local supply) with a maximum length of 150 m.
To use the sensor in the main remote controller, the main remote controller should be
detached from the FTC (Main). Otherwise it will detect the temperature of the FTC
(Main) instead of room temperature. This will affect the output of the space heating.
The thermostat is used to set the maximum temperature for heating Zone 2 room.
The thermostat is wired to IN6 on FTC (Main). (If the thermostat is assigned to Zone 1,
wire it to IN1 on TBI.1.) (Refer to 4.5.)
Control option D
This option features the locally supplied thermostats wired to FTC (Main). The ther-
mostats are individually assigned to Zone 1 and Zone 2. The thermostats are used to
set each maximum temperature for heating Zone 1 and Zone 2 rooms. Any changes to
DHW *1 must be made using the main remote controller mounted on the FTC (Main).
The thermostat for Zone 1 is wired to IN1 in TBI.1 on FTC (Main).
The thermostat for Zone 2 is wired to IN6 in TBI.1 on FTC (Main).
Note: For the options above, the sensor types can be exchanged between Zone 1 and Zone 2. (e.g. Wireless remote controller in Zone 1 and room temperature thermostat in
Zone 2 can be changed to room temperature thermostat and wireless remote controller, respectively.)
*1 If applicable
The wireless remote controller can be also used as a thermostat.
Wireless receiver
(option)
FTC
(Main)
Outdoor unit
Main remote controller
Zone 1; Auto Adaptation (Target room temperature)
Zone 2; Weather compensation curve or flow
temperature control
FTC
(Main)
Outdoor unit
Main remote controller
Zone 1; Auto Adaptation (Target room temperature)
Zone 2; Weather compensation curve or flow
temperature control
FTC
(Main)
Outdoor unit
Zone 1; Auto Adaptation (Target room temperature)
Zone 2; Weather compensation curve or flow
temperature control
FTC
(Main)
Outdoor unit
Main remote controller
Zone 1; Weather compensation curve or flow
temperature control
Zone 2; Weather compensation curve or flow
temperature control
Wireless remote controller
(option)
8 max.
Zone 1
Room temperature
thermostat
(local supply)
Zone 2
Room temperature
thermistor (option)
Zone 1
Room temperature
thermostat
(local supply)
Zone 2
Main remote controller
(remote position)
Zone 1
Room temperature
thermostat
(local supply)
Zone 2
Room temperature
thermostat
(local supply)
Zone 1
en
Room temperature
thermostat
(local supply)
Zone 2
16