Mitsubishi Electric EHST20-Serie Installationshandbuch Seite 37

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System Set Up
Operation Setting Menu
. To access the Operation setting menu use F and F2 buttons to scroll through
the service menu until Operation setting is highlighted.
2. Press CONFIRM.
3. Operation setting menu is displayed.
<Simultaneous Operation>
For periods of very low outside temperature this mode can be used. Simultane-
ous operation allows both DHW and space heating to run together by using the
heat pump to provide space heating whilst the immersion heater provides heating
for DHW. This operation is only available if BOTH a DHW tank AND immersion
heater are present on the system.
. From the Operation setting menu use F and F2 buttons to scroll through the
list until Simultaneous operation is highlighted.
2. Press CONFIRM.
3. Simultaneous operation screen is displayed.
4. To switch simultaneous operation ON/OFF press F.
5. To alter the temperature at which simultaneous operation starts use F3 and F4.
Note: Range of ambient (outdoor) temperature is -15°C to 10°C (default -15°C).
6. To return to Operation setting menu press BACK.
<Cold weather function>
For extremely low outdoor temperature conditions when the heat pump's capacity
is restricted the heating or DHW is provided by the electric booster heater (and
immersion if present). This function is for use during extreme cold periods only.
Extensive use of direct electrical heaters ONLY will result in higher electric usage
and may reduce working life of heaters and related parts.
. From the Operation setting menu use F and F2 buttons to scroll through the
list until Cold weather function is highlighted.
2. Press CONFIRM.
3. Cold weather function screen is displayed.
4. To switch Cold weather function ON/OFF press F.
5. To alter the temperature at which heater switching function starts use F3 and F4.
Note: Range of ambient (outdoor) temperature is -15°C to -10°C (default -15°C)
6. To return to Operation setting menu press BACK.
<room temp Control (Heating)>
This function allows operational setting of flow temperature range from the Eco-
dan and also the time interval at which the FTC3 collects and processes data for
the auto adaptation mode.
. From the Operation setting menu use F and F2 buttons to scroll through the
list until Room temp. control (HEATING) is highlighted.
2. Press CONFIRM.
Room temp. control (HEATING) screen is displayed.
3.
4. To alter the time period at which date will be collected use F and F2 buttons
to highlight 'Temp. control interval'.
5. Press CONFIRM.
6. Use F3 and F2 buttons to alter the time interval.
Note: Range 10 – 60 minutes at 10 minute intervals (default 10 minutes).
To alter the flow temperature limits use F1 and F2 buttons to highlight 'Flow
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temperature range'.
8. Press CONFIRM.
Flow temperature range screen is displayed.
To alter minimum flow temp. use F1 and F2 buttons.
9.
Note: Range of minimum flow temp. is 25°C to 40°C (default 30°C).
To alter maximum flow temp. use F3 and F4 buttons.
0.
Note: Range of maximum flow temp. is 35°C to 60°C (default 50°C)
. To return to Operation setting menu press BACK twice.
Operation setting menu screen
Simultaneous operation screen
Cold weather function screen
Room temp. control (HEATING) screen
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