2-Zone Valve On/Off Control; Indoor Unit Only Operation; Smart Grid Ready - Mitsubishi Electric ecodan ERSE series Installationshandbuch

5
System Set Up

5.4 2-zone valve ON/OFF control

Opening /closing 2-way valve provides a simple 2-Zone control.
Flow temperature is common for Zone1 and 2.
1. Pipe work
3
2. DIP switch
Turn DIP switch 3-6 ON.
3. 2-way valve 2a (for Zone1) / 2-way valve 2b (for Zone2)
Electrically wire 2-way valve 2a and 2b to the appropriate external output terminals. (Refer to "External outputs" in 5.2)
4. Room thermostat connection
Heating operation mode
Room temp. control
(Auto adaptation) *3
Compensation curve or flow temp. control
*3 Ensure to install the room thermostat for Zone1 in main room since the Room temp. control for Zone1 is prioritized.
*4 The wireless remote controller can be used as a thermostat.
5.5 Indoor unit only operation (during installation work)
In the case when DHW or heating operation is required prior to connection of the outdoor unit; i.e. during installation work, an electric heater in indoor unit (*1) can be used.
*1 Model with electric heater only.
1. To start operation
● Check if the indoor unit power supply is OFF, and turn DIP switch 4-4 and 4-5 ON.
● Turn ON the indoor unit power supply.
2. To end operation *2
● Turn OFF the indoor unit power supply.
● Turn DIP switch 4-4 and 4-5 OFF.
*2 When the indoor unit only operation is ended, ensure to check over the settings after outdoor unit is connected.
Note:
Prolonged running of the this operation may affect the life of the electric heater.

5.6 Smart grid ready

In DHW or heating operation, the commands in the table below can be used.
IN11 IN12 Meaning
OFF (open) OFF (open) Normal operation
ON (short) OFF (open) Switch-on recommendation*1
OFF (open) ON (short) Switch-off command
ON (short) ON (short) Switch-on command*2
Note:
• To activate this function, settings on the main remote controller are required.
(Main menu → Service → "Function settings" Ref. add: 0, Unit: 1)
• Heating operation mode (compensation curve or flow temp. control) requires
the optional wireless remote controller.
*1 Switch-on recommendation has following 2 modes:
Mode 7 Hot water operation
Additional boost temperature is added onto the usual DHW target temperature.
(1-Inactive (default) /2-Target temp. +3°C/3-Target temp. +5°C)
Mode 8 Heating operation
Heating ON (permitted heating with thermo ON) range is extended.
(1-Inactive (default ) /2-Thermo ON temp. +2°C/3-Thermo ON temp. +3°C)
*2 Switch-on command has following 2 modes:
Hot water operation
With electrical heater or DIP SW 1-2 ON → Target temp. : 60°C
Without electrical heater and DIP SW 1-2 OFF → Target temp. : 55°C
Heating operation
Heating is ALWAYS permitted.
21
Zone1
1
4
Zone2
2
Zone1
● Wireless remote controller (option)
● Room temperature thermistor (option)
● Main remote controller (remote position)
● Wireless remote controller (option) *4
● Room temperature thermostat (local supply)
1. Zone1 2-way valve 2a (local supply)
2. Zone2 2-way valve 2b (local supply)
3. Water circulation pump 2 (local supply) *1
4. By-pass valve (local supply) *2
*1 Install according to system in the field.
*2 For safety protection, it is recommended to install a by-pass valve.
Note: 1. Freeze stat function is deactivated whilst this control is ON. Use anti-freeze
solution to avoid freezing, if necessary.
2. When mixing tank and DHW tank are installed, install a 3-way valve (OUT4)
in the primary water circuit.
Zone2
● Wireless remote controller (option)
● Wireless remote controller (option) *4
● Room temperature thermostat (local supply)
7 8 9 10
TBI.3
IN11 IN12