Mitsubishi Electric PAC-IF081B-E Installation Manual page 40

7. Remote controller 6
Remote Controller
Menu subtitle Function
DHW target temp. Desired temperature of stored hot water
[Max. temp. drop] Diff erence in temperature between the DHW maximum temperature and the temperature at which DHW
mode restarts
[Max. operation time]
Maximum time allowed for stored water heating DHW mode
[Interval] The time period after DHW mode when space heating has priority over DHW mode temporarily preventing
further stored water heating
(Only when DHW max. operation time has passed.)
*1 The maximum temperature diff ers depending on the connected outdoor unit. (60°C/65°C/70°C)
*2 When the DHW maximum temperature is set over 55°C, the temperature at which DHW mode restarts must be less than 50°C to protect the device.
[Eco]
DHW mode can run in either normal or Eco mode. Normal mode will heat the water in the DHW tank fast 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.
[Volume]
Select the amount of DHW tank. If you need much hot water, select [Large].
Return to the DHW/legionella prevention menu.
Legionella prevention mode settings (LP mode)
• [Legionella]: It can be activated/deactivated by the toggle.
The target temperature can be changed by +/-.
From the edit icon
[Max. operation time] can be set.
• [Schedule]: It can be activated/deactivated by the toggle.
• [Always off ]: It can be activated/deactivated by the toggle.
During LP mode, the temperature of the stored water is increased above 60°C to
inhibit legionella bacteria growth. It is strongly recommended that this is done at
regular intervals. Please check local regulations for the recommended frequency
of heat ups.
Note 1: When failures occur on the hydrobox, the LP mode may not func-
tion normally.
Note 2: Even when DHW operation is prohibited, LP mode will operate.
Menu subtitle
Hot water temp.
[Start time]
[Duration]
[Frequency]
[Max. operation time]
[Setting]
From the menu icon , access [Setting].
The following items can be edited in [Setting].
• [Date / time]
• [Display] (From [Setting], the screen can be switched to the full screen or the base screen.)
• [Language]
• [Room sensors]
• [Contact number]
• [Touch screen] ([Calibrate screen]*1, [Clean screen]*2, [Brightness], and [Backlight time])
Follow the procedure described in General Operation for the set up operation.
*1 Touching the 9 dots displayed on the screen starts calibration.
To properly calibrate the touch panel, use a pointy but not sharp object to touch the dots.
Note: A sharp object may damage or scratch the touch screen.
*2 You can wipe the screen while touch operations are invalid for 30 seconds.
Wipe with a soft dry cloth, a cloth soaked in water with mild detergent, or a cloth dampened with ethanol.
Do not use acidic, alkaline, or organic solvents.
[Room sensors]
For [Room sensors], it is important to choose the correct room sensor depending on the heating and cooling mode the system will operate in.
en
Zone programme
Back
Programme
Programme
Programme
Programme
[Zone 1 programme]
39
, [Start time], [Duration], [Frequency], and
Function
Desired temperature of stored hot water
Time when LP mode will begin
The time period after LP mode desired water temperature has been reached
Time between LP mode DHW tank heat up
Maximum time allowed for LP mode DHW tank heat
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RC
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RC
- MainRC
- MainRC
Please note that LP mode uses the assistance of electric heaters to supple-
ment the energy input of the heat pump. Heating water for long periods of
time is not effi cient and will increase running costs. The installer should give
careful consideration to the necessity of legionella prevention treatment whilst
not wasting energy by heating the stored water for excessive time periods.
The end user should understand the importance of this feature.
ALWAYS COMPLY WITH LOCAL AND NATIONAL GUIDANCE FOR YOUR
COUNTRY REGARDING LEGIONELLA PREVENTION.
Range
60 - 70
0:00 - 23:00
1 - 120
1 - 30
1 - 5
Range Unit Default value
40 - 70*1 °C 50
5 - 40*2 °C 10
30 - 120 min. 60
30 - 120 min. 30
Unit Default value
°C 65
- 03:00
min. 30
day 15
h 3