Mitsubishi Electric EHWT17D-MHEDW, Data Book

Page: 38 / 131

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 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 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 referring to the wireless remote
controller instruction manual. Turn DIP SW1-8 to ON. Before opera-
tion 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 FTC. (If the thermostat is allocated
to Zone1, it is wired to IN1 on TBI.1.) (Refer to 7.4.2.)
Control option B
This option features the main remote controller, the Mitsubishi Electric
thermistor and a locally supplied thermostat that are wired to FTC.
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 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.
The thermostat is used to set the maximum temperature for heating
Zone2 room.
The thermostat is wired to IN6 on FTC. (If the thermostat is allocated
to Zone1, wire it to IN1 on TBI.1.) (Refer to 7.4.2.)
Zone1: Room temp. control (Auto adaptation)
Zone2: Compensation curve or flow temp. control
Zone1: Room temp. control (Auto adaptation)
Zone2: Compensation curve or flow temp. control
Heat pump unit
FTC
20.0°C
20.0°C
20.0°C
C.B
Room temperature
thermostat
(local supply)
Wireless receiver
(option)
Wireless remote
controller (option)
Zone1
Zone2
Max. 8
Main remote
controller
Heat pump unit
FTC
20.0°C
C.B
Room temperature
thermistor (option)
Room temperature
thermostat
(local supply)
Main remote
controller
Zone1
Zone2
B-235
Water to Water Heat Pump (WTW)
7
Cylinder
unit/
Hydrobox/GSHP/WTW
Cylinder
unit/
Hydrobox/GSHP/WTW