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Recommended Settings - Mitsubishi Electric Ecodan PUHZ-W50VHA-BS Quick Start Up Manual

Air source heat pump
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Recommended Settings

The controller has settings pre-installed that will provide adequate hot water and heating, but they can be amended using
the instructions in the first two sections. The temperatures that should be used are as follows
PAR-W21MAA recommended flow temperatures
Hot Water
Eco Heating
Low Ambient Temperature
High Ambient Temperature
Radiators
Please note that heat pumps provide lower flow temperatures to radiators than a conventional gas boiler. Rather the
radiators turning on/off locally as with a gas boiler, heat pumps provide a more consistent lower flow temperature which
allows for more efficiency and greater comfort.
Hot Water Set-up
The recommended temperatures (as stated above) need to be programmed into the controller
What is on the screen
1. Normal mode
2. Water Temp Heating
3. Water Temp Heating Eco No.1
4. Water Temp Heating Eco No.2
5. Water Temp Hot Water
6. Water Temp Hot Water
7. Water Temp Hot Water
Throughout this guide the buttons on the controller are referenced by letters and displays by numbers ; this key can be found on the front page
Under-floor
Radiator
Under-floor
Radiator
Flashing Temp. represents
Keypad selection
Hold down H
for 3 seconds
Press E
Press E
Press E
Water Temp Hot Water
Press D
Water Temp Hot Water
Press A
Water Temp Hot Water
Hold down H
Factory Settings
°
50
C
-10°C ~ 38°C
17°C ~ 25°C
Lower flow temperatures lead to greater efficiencies.
Notes
This activates the controller, the display will flash
with the words 'loading'
This mode is not necessary and should be skipped
This mode is not necessary and should be skipped
This mode is not necessary and should be skipped
Move up or down to desired temperature
Once pressed it will memorise these settings. The
screen will flash 'settings' for several seconds.
This will end the parameters that need to be set.
Pressing button I (ON/OFF) will also end the set-up.
Recommended
°
58
C
-2°C ~ 40°C
-2°C ~ 45°C
15°C ~ 30°C
15°C ~ 30°C

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