Mitsubishi Electric EHGT17D-YM9ED Service Manual page 24

Mixing valve control
1. From the Auxiliary settings menu highlight Mixing valve control.
2. Press CONFIRM.
3. The Mixing valve control screen is displayed.
4. Use F1 and F2 buttons to set Running time between 10 to 240 seconds. The Running time
equals to a period from full open of the valve (at a hot water mixing ratio of 100%) to full close
(at a cold water mixing ratio of 100%).
Note: Set the Running time according to the specifications of the actuator of each mixing
valve.
1. From the Auxiliary settings menu highlight Mixing valve control.
2. Press CONFIRM.
3. The Mixing valve control screen is displayed.
4. Press F3 and F4 buttons to set the interval between 2-zone temperature controls of the mixing
valve between 1 to 30 minutes.
Note: It is recommended to set the interval to 2 minutes that is a default value. With the
interval set longer, it could take longer to warm up a room.
Flow sensor
1. From the Auxiliary settings menu highlight Flow sensor.
2. Press CONFIRM.
3. The Flow sensor screen is displayed.
4. Use F1 and F2 buttons to set the minimum flow rate of flow sensor between 0
to maximum L/min.
5. Use F3 and F4 buttons to set the maximum flow rate of flow sensor between
minimum to 100L/min.
Note: Do not change the setting since it is set according to the
specification of flow sensor attached to the heat pump unit.
<Heat source setting>
The default heat source setting is heat pump and all electric heaters present in
the system to be operational. This is referred to as Standard operation on the
menu.
<Pump speed>
1. From the Service menu highlight Pump speed.
2. Press CONFIRM.
3. The Pump speed screen is displayed.
4. Use F2 and F3 buttons to set the pump speed of the water circulation pump
between 1 and 5.
<Heat pump settings>
Heat pump flow rate range
Quiet mode
This function can provide additional quietness if more quietness is required.
1. From the Heat pump settings menu highlight Quiet mode.
2. Press CONFIRM.
3. Use F2 and F3 buttons to select days.
4. Press F4 button to edit quiet level and time.
5. Select time settings or level settings using the F1 button.
6. Use the F3 and F4 buttons to set the time or level.
OCH722A
Mixing valve control setting screen
Flow sensor setting screen
Heat source setting screen
Pump speed setting screen
QUIET MODE
Time All
QUIET MODE
All
Quiet
24
Start Stop
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