Domestic Hot Water (Dhw)/Legionella Prevention - Mitsubishi Electric ecodan EHPT Série Manuel D'installation

5
System Set Up
<Continued from the previous page.>
<Main Controller Menu Tree>
Initial
Main screen
Main
menu
Menu
Service
Password
protected

Domestic Hot Water (DHW)/Legionella Prevention

The domestic hot water and legionella prevention menus control the operation of
DHW tank heat ups.
<DHW mode settings>
1. Highlight the hot water icon and press CONFIRM.
2. Use button F1 to switch between Normal and ECO heating modes.
3. To edit the mode, press down the MENU button for 3 seconds, then select "hot
water".
4. Press F2 key to display the Hot Water (DHW) SETTING menu.
5. Use F2 and F3 keys to scroll through the menu selecting each component in
turn by pressing CONFIRM. See the table below for description of each setting.
6. Enter the desired number using the function keys and press CONFIRM.
Menu subtitle Function
DHW max. temp. Desired temperature of stored hot water
DHW max. temp. drop Difference in temperature between DHW max. temp. and the temperature at which DHW mode restarts 5 - 30 *
DHW max. operation time Max. time allowed for stored water heating DHW mode
DHW mode restriction The time period after DHW mode when space heating has priority over DHW mode temporarily pre-
venting further stored water heating
(Only when DHW max. operation time has passed.)
* When the DHW max. temp is set over 55°C, the temperature at which DHW mode restarts must be less than 50°C to protect the device.
<Eco mode>
DHW mode can run in either 'Normal' or 'Eco' mode. Normal mode will heat the water in the DHW tank more quickly using the full power of the heat pump. Eco mode takes
a little longer to heat the water in the DHW tank but the energy used is reduced. This is because heat pump operation is restricted using signals from the FTC based on
measured DHW tank temperature.
Note: The actual energy saved in Eco mode will vary according to outdoor ambient temperature.
<[DHW recharge]>
Select the amount of DHW. If you need much hot water, select LARGE, but increase operating costs.
Return to the DHW/legionella prevention menu.
Electric heater
capacity
Energy monitor Water pump input
settings
Delivered energy adjustment
Electric energy meter
Heat meter
Demand control (IN4)
External input settings
Outdoor thermostat (IN5)
Thermo ON output Zone1/Zone2/Zone1&2
Commissioning wizard
Running information
Thermistor reading
Summary of settings
Error history
Password protection
Main controller
Manual reset
FTC
Main RC
SD
SD card
Main RC
Booster heater 1 capacity
Booster heater 2 capacity
Immersion heater
Analog output
Pump 1
Pump 2
Pump 3
Pump 4
OFF (Heat source)/Boiler
Heater/Boiler
Yes/No
Yes/No
Select download data
F1 F2 F3
SD Select upload data
F1 F2 F3
Range
40 - 60
30 - 120
30 - 120
Unrestricted access
Installer only
Long press
en
Unit Default value
°C 50
°C 10
min 60
min 30
24