2-Zone Temperature Control - Mitsubishi Electric Ecodan EHST20 serie Para El Instalador

5
System Set Up

2-zone temperature control

Control option A
This option features the main controller, the Mitsubishi Electric wireless remote
controller and a locally supplied thermostat.
The wireless remote controller is used to monitor the Zone1 room temperature and the
thermostat is used to monitor the Zone2 room temperature.
The thermostat can be also allocated to Zone1 and the wireless remote controller to
Zone2.
The wireless remote controller can be also used to make changes to the space heating
settings, boost DHW and switch to holiday mode without having to use the main
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 FTC4 referring to the wireless remote controller instruc-
tion 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.)
The thermostat is used to set the maximum temperature for heating Zone2 room.
The thermostat is wired to IN6 on FTC4. (If the thermostat is allocated to Zone1, it is
wired to IN1 on TBI.1.) (Refer to 5.2.)
Control option B
This option features the main controller, the Mitsubishi Electric thermistor and a locally
supplied thermostat that are wired to FTC4.
The thermistor is used to monitor the Zone1 room temperature and the thermostat is
used to control the Zone2 room temperature.
The thermostat can be also allocated to Zone1 and the thermistor to Zone2.
The thermistor can not make any changes in control operation. Any changes to DHW
must be made using the main controller mounted on the cylinder unit.
Wire the thermistor to the TH1 connector on FTC4.
The number of room temperature thermistors that can be connected to FTC4 is always
one.
The thermostat is used to set the maximum temperature for heating Zone2 room.
The thermostat is wired to IN6 on FTC4. (If the thermostat is allocated to Zone1, wire it
to IN1 on TBI.1.) (Refer to 5.2.)
Control option C
This option features the main controller (with in-built thermistor) that is removed from
the cylinder unit to monitor the Zone1 room temperature and a locally supplied thermo-
stat to monitor the Zone2 room temperature.
The thermostat can be also allocated to Zone1 and the thermistor to Zone2.
A thermistor built into the main controller can be used for monitoring the room tempera-
ture for Auto Adaptation function whilst keeping all its features of the main controller
available.
The main controller and FTC4 are connected by a 2-core, 0.3 mm², non-polar cable (field
supply) with a maximum length of 500 m.
To use the sensor in the main controller the main controller should be detached from
the cylinder unit. Otherwise it will detect the temperature of the cylinder unit instead of
room temperature. This will affect the output of the space heating.
The thermostat is used to set the maximum temperature for heating Zone2 room.
The thermostat is wired to IN6 on FTC4. (If the thermostat is allocated to Zone1, wire it
to external input IN1 on TBI.1.) (Refer to 5.2.)
Control option D
This option features the locally supplied thermostats wired to FTC4. The thermostats
are individually allocated to Zone1 and Zone2. The thermostats are used to set each
maximum temperature for heating Zone1 and Zone2 rooms. Any changes to DHW
must be made using the main controller mounted on the cylinder unit.
The thermostat for Zone1 is wired to IN1 in TBI.1 on FTC4.
The thermostat for Zone2 is wired to IN6 in TBI.1 on FTC4.
* For the options above, the sensor types can be exchanged between Zone1 and Zone2. (e.g. Wireless remote controller in Zone1 and Room temp thermostat in Zone2 can
be changed to Room temp thermostat and wireless remote controller, respectively).
The wireless remote controller can be also used as a thermostat.
31
Wireless receiver
(option)
FTC4
Outdoor unit
Main controller
Cylinder unit
Zone1: Room temp. control (Auto adaptation)
Zone2: Compensation curve or flow temp. control
FTC4
Outdoor unit
Main controller
Cylinder unit
Zone1: Room temp. control (Auto adaptation)
Zone2: Compensation curve or flow temp. control
FTC4
Outdoor unit
Cylinder unit
Zone1: Room temp. control (Auto adaptation)
Zone2: Compensation curve or flow temp. control
FTC4
Main controller
Outdoor unit
Cylinder unit
Zone1, Zone2: Compensation curve or flow temp. control
Wireless remote controller
(option)
20.0°C
Max. 8
20.0°C
Zone1
20.0°C
Room temperature
thermostat
(field supply)
Zone2
Room temperature
thermistor (option)
Zone1
20.0°C
Room temperature
thermostat
(field supply)
Zone2
Main controller
(remote position)
Zone1
20.0°C
Room temperature
thermostat
(field supply)
Zone2
Room temperature
thermostat
(field supply)
Zone1
20.0°C
Room temperature
thermostat
(field supply)
Zone2