Remote Controller Options - Mitsubishi Electric EHSD-MEC Installation Manual

5
System Set Up

5.8 Remote Controller Options

The hydrobox comes factory fitted with a main remote controller. This incorporates a ther-
mistor for temperature monitoring and a graphical user interface to enable set-up, view
current status and input scheduling functions. The main remote controller is also used for
servicing purposes. This facility is accessed via password protected service menus.
To provide the best efficiency Mitsubishi Electric recommends using automatic adaptation
function based on room temperature. To use this function a room thermistor needs to be
present in a main living area. This can be done in a number of ways the most convenient
are detailed below.
Refer to heating section of this manual for instructions on how to set compensation
curve, Flow temp. or Room temp. (Auto adaptation).
For instructions on how to set the thermistor input for the FTC please refer to Initial
settings section.
The factory setting for space heating mode is set to Room temp. (auto adaptation). If
there is no room sensor present in the system, this setting must be changed to either
Compensation curve mode or Flow temp. mode.
Note: Auto-adaptation is not available in Cooling mode.
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 (*1) 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 (*1) must be made using the main
remote controller mounted on the hydrobox.
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 hydrobox 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 features 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 hydrobox. Otherwise it will detect the temperature of the hydrobox instead of room
temperature. 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 (Flow temp. or compensation curve only)
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 (*1) must be made using main remote controller mounted on the
hydrobox.
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.
*1 If applicable
Factory supplied standard
Outdoor unit
Wireless receiver
(option)
FTC
Outdoor unit
Main remote
controller
Hydrobox
FTC
Outdoor unit
Main remote
controller
Hydrobox
FTC
Outdoor unit
Hydrobox
FTC
Outdoor unit Main remote
controller
Hydrobox
FTC
Hydrobox
Wireless remote controller
(option)
20.0°C
20.0°C
Max. 8
20.0°C
20.0°C
Room
Room temperature
thermistor (option)
Room
Main remote
controller
(remote position)
Room
20.0°C
Room temperature
thermostat
(local supply)
Room
24