Domestic Hot Water (Dhw)/Legionella Prevention - Mitsubishi Electric EHST20C-VM6HB Installationshandbuch

5
System Set Up
2. When 2-zone temperature control is active or wireless remote controllers are
available, from Room RC zone select screen, select zone no. to assign to
each remote controller.
3. From Sensor setting screen, select a room sensor to be used for monitoring
the room temperature from Zone1 and Zone2 separately.
Control option Corresponding initial settings room sensor
(pages 24 and 25) Zone1
A Room RC1-8 (one each
for Zone1 and Zone2)
B TH1
C Main controller
D *
* Not specified ( if a field-supplied room thermostat is used)
Room RC1-8 (one each for Zone1 and Zone2) (if a wireless remote controller
is used as a room thermostat)
4. From Sensor setting screen, select Time/Zone to make it possible to use differ-
ent room sensors according to the time schedule set in the Select Time/Zone
menu. The room sensors can be switched up to 4 times within 24 hours .

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 F2 to display the HOT WATER (DHW) SETTING menu.
4. 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.
5. 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. temperature Difference in temperature between DHW max. temp and the temperature at which DHW mode restarts
drop
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.)
Zone2
*
*
*
*
Time/Zone schedule setting screen
range
40 - 60
5 - 30
30 - 120
30 - 120
Unit default value
°C 50
°C 10
min 60
min 30
32