DAIKIN ETVZ16S18EA6V Altherma 3 H HT F User Manual

DAIKIN ETVZ16S18EA6V Altherma 3 H HT F

safety instructions

Breadcrumbs
Breadcrumbs (example: [4.3]) help you to locate where you are in the menu structure of the user interface.

1| To enable the breadcrumbs: In the home screen or main menu screen, press the help button. The breadcrumbs appear in the top left corner of the screen.|
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2| To disable the breadcrumbs: Press the help button again.|

This document also mentions these breadcrumbs. Example:

1| Go to [4.3] : Space heating/cooling > Operation range.| ****

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This means:

Always observe the following safety instructions and regulations.

General

WARNING
If you are NOT sure how to operate the unit, contact your installer.

WARNING
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children SHALL NOT play with the appliance. Cleaning and user maintenance SHALL NOT be made by children without supervision.

WARNING
To prevent electrical shocks or fire:

• Do NOT rinse the unit.
• Do NOT operate the unit with wet hands.
• Do NOT place any objects containing water on the unit.

CAUTION

• Do NOT place any objects or equipment on top of the unit.
• Do NOT sit, climb or stand on the unit.

Units are marked with the following symbol:

This means that electrical and electronic products may NOT be mixed with unsorted household waste. Do NOT try to dismantle the system yourself: the dismantling of the system, treatment of the refrigerant, of oil and of other parts must be done by an authorized installer and must comply with applicable legislation. Units must be treated at a specialized treatment facility for reuse, recycling and recovery. By ensuring this product is disposed of correctly, you will help to prevent potential negative consequences for the environment and human health. For more information, contact your installer or local authority.

• Batteries are marked with the following symbol:

This means that the batteries may NOT be mixed with unsorted household waste. If a chemical symbol is printed beneath the symbol, this chemical symbol means that the battery contains a heavy metal above a certain concentration.
Possible chemical symbols are: Pb: lead (>0.004%). Waste batteries must be treated at a specialized treatment facility for reuse. By ensuring waste batteries are disposed of correctly, you will help to prevent potential negative consequences for the environment and human

Instructions for safe operation

WARNING: MILDLY FLAMMABLE MATERIAL
The refrigerant inside this unit is mildly flammable.

WARNING
The appliance shall be stored so as to prevent mechanical damage and in a well-ventilated room without continuously operating ignition sources (example: open flames, an operating gas appliance or an operating electric heater).

WARNING

• Do NOT pierce or burn refrigerant cycle parts.
• Do NOT use cleaning materials or means to accelerate the defrosting process other than those recommended by the manufacturer.
• Be aware that the refrigerant inside the system is odourless.

WARNING
The refrigerant inside the unit is mildly flammable, but normally does NOT leak. If the refrigerant leaks in the room and comes in contact with fire from a burner, a heater, or a cooker, this may result in fire, or the formation of a harmful gas.
Turn off any combustible heating devices, ventilate the room, and contact the dealer where you purchased the unit. Do NOT use the unit until a service person confirms that the part from which the refrigerant leaked has been repaired.

WARNING
Air purging heat emitters or collectors. Before you purge air from heat emitters or collectors, check if or is displayed on the home screen of the user interface.

• If not, you can purge air immediately.
• If yes, make sure that the room where you want to purge air is sufficiently ventilated. Reason: Refrigerant might leak into the water circuit, and subsequently into the room when you purge air from the heat emitters or collectors.

About the system

Depending on the system layout, the system can:

• Heat up a space
• Cool down a space (if a heating/cooling heat  pump model is installed)
• Produce domestic hot water

INFORMATION
Cooling is only applicable in case a conversion kit (EKHVCONV*) is installed.

Components in a typical system layout

• A Main zone. Example: Living room.
• B Additional zone. Example: Bedroom.
• C Technical room. Example: Garage.
  • a Outdoor unit heat pump
  • b Indoor unit heat pump
  • c Domestic hot water (DHW) tank
  • d User interface of the indoor unit
  • e Dedicated Human Comfort Interface (BRC1HHDA used as room thermostat)
  • f Underfloor heating
  • g Radiators, heat pump convectors, or fan coil units

Quick guide

User permission level

The amount of information you can read out and edit in the menu structure depends on your user permission level:

• User: Standard mode
• Advanced user: You can read out and edit more information

To change the user permission level

User pin code
The User pin code is 0000.

Advanced user pin code
The Advanced user pin code is 1234. Additional menu items for the user are now visible.

Space heating/cooling

To turn space heating/cooling operation ON or OFF

NOTICE
Room frost protection. Even if you turn OFF space heating/cooling operation ([C.2]: Operation > Space heating/cooling), room frost protection operation –if enabled– can still activate. However, for leaving water temperature control and external room thermostat control, protection is NOT guaranteed.

NOTICE
Water pipe freeze prevention. Even if you turn OFF space heating/cooling operation ([C.2]: Operation > Space heating/cooling), water pipe freeze prevention –if enabled– will remain active.

To change the desired room temperature
During room temperature control, you can use the room temperature setpoint screen to read out and adjust the desired room temperature.

To change the desired leaving water temperature
You can use the leaving water temperature setpoint screen to read out and adjust the desired leaving water temperature.

To change the weather-dependent curve for the space heating/cooling zones

Go to the applicable zone:

Operation

Heating WD curve

Additional zone – Cooling| [3.6] Additional zone >

Cooling WD curve

Change the weather-dependent curve.

There are 2 types of WD curves: slope-offset curve (default), and 2-points curve. If needed, you can change the type in [2.E] Main zone > WD curve type. The way to adjust the curve depends on the type.

Slope-offset curve

• Slope. When slope is changed, the new preferred temperature at X1 is unequally higher than the preferred temperature at X2.
• Offset. When offset is changed, the new preferred temperature at X1 is equally higher as the preferred temperature at X2.
• X1, X2 Outdoor ambient temperature
• Y1~Y4 Desired to leave water temperature
  • a WD curve before changes
  • b WD curve after changes
  • c Slope
  • d Offset

2-points curve

• X1, X2 Outdoor ambient temperature
• Y1, Y2 Desired leaving water temperature

More information
For more information, see also:

• “5.4 Turning operation ON or OFF” [4 11]
• “5.6 Space heating/cooling control” [4 12]
• “5.8 Schedule screen: Example” [4 14]
• “5.9 Weather-dependent curve” [4 15]
• User reference guide

Domestic hot water

To turn tank heating operation ON or OFF

NOTICE
Disinfection mode. Even if you turn OFF tank heating operation ([C.3]: Operation > Tank), disinfection mode will remain active. However, if you turn it OFF while disinfection is running, an AH error occurs.

To change the tank temperature setpoint
In Reheat only mode, you can use the tank temperature setpoint screen to read out and adjust the domestic hot water temperature. In other modes, you can only view the setpoint screen but not modify it. Instead, you can modify the settings for the Comfort setpoint [5.2], Eco setpoint [5.3] and Reheat setpoint [5.4].
More information
For more information, see also:

▪ “5.4 Turning operation ON or OFF” [4 11] ▪ “5.7 Domestic hot water control” [4 13] ▪ “5.8 Schedule screen: Example” [4 14] ▪ User reference guide

INFORMATION
Cooling is only applicable in case a conversion kit (EKHVCONV*) is installed.

User interface: Overview

The user interface has the following components:

• a Status indicator
• b LCD screen
• c Dials and buttons

Status indicator
The LEDs of the status indicator light up or blink to show the operating mode of the unit.

See “8.1 To display the help text in case of a malfunction” 4[  18] for more information.

Slot for WLAN cartridge
With the WLAN cartridge, the installer can connect the system to the internet. As user you can then control the system via the Daikin Residential Controller app. Note: This slot cannot be used for SD cards.

USB connector
With a USB memory stick, the installer can:

• Update the software. This requires a correct config file on the USB memory stick.
• Import the settings generated by E-Configurator (Heating Solutions Navigator) from the USB memory stick to the user interface (MMI). This requires a correct config file on the USB memory stick.
• Export the current settings (i.e. field settings, MMI EEPROM settings, schedule timers) from the user interface (MMI) to the USB memory stick.

LCD screen
The LCD screen has a sleeping function. After 15  min of non-interaction with the user interface, the screen darkens. Pressing any button or rotating any dial awakens the display.

Dials and buttons
You use the dials and buttons:

• To navigate through the screens, menus and settings of the LCD screen
• To set values

you can use the left dial.

▪: Turn, then press the left dial. Navigate through the menu structure.

▪: Turn the left dial. Choose a menu item.

▪: Press the left dial. Confirm your choice or go to a submenu.

b| Back button| : Press to go back 1 step in the menu structure.
c| Home button| : Press to go back to the home screen.
d| Help button| : Press to show a help text related to the current page (if available).
e| Right dial| The LCD shows an arc on the right side of the display when you can use the right dial.

▪: Turn, then press the right dial. Change a value or setting, shown at the right side of the screen.

▪: Turn the right dial. Navigate through the possible values and settings.

▪: Press the right dial. Confirm your choice and go to the next menu item.

Menu structure: Overview user settings

INFORMATION
Depending on the selected installer settings and unit type, settings will be visible/invisible.

Possible screens: Overview

The most common screens are as follows:

• a Home screen
• b Main menu screen
• c Lower level screens:
  • c1: Setpoint screen
  • c2: Detailed screen with values
  • c3: Screen with weather-dependent curve
  • c4: Screen with schedule

Home screen
Press the button to go back to the home screen. You see an overview of the unit configuration and the room and setpoint temperatures. Only symbols applicable for your configuration are visible on the home screen.

• (a) If the corresponding operation (for example: space heating) is not active, the circle is greyed out.

Main menu screen

Starting from the home screen, press ( ) or turn ( ) the left dial to open the main menu screen. From the main menu, you can access the different setpoint screens and submenus.

• a Selected submenu

Setpoint screen
The setpoint screen is displayed for screens describing system components that need a setpoint value.

Examples

1.  Room temperature screen
2. Main zone screen

Detailed screen with values

• a Settings
• b Values
• c Selected setting and value

Turning operation ON or OFF

Visual indication
Certain functionalities of the unit can be enabled or disabled separately. If functionality is disabled, the corresponding temperature icon in the home screen will be greyed out.

Space heating/cooling operation

• a Space heating/cooling operation ON
• b Space heating/cooling operation OFF

Tank heating operation

• c Tank heating operation ON
• d Tank heating operation OFF

To turn ON or OFF
Space heating/cooling operation

NOTICE
Room frost protection. Even if you turn OFF space heating/cooling operation ([C.2]: Operation > Space heating/cooling), room frost protection operation –if enabled– can still activate. However, for leaving water temperature control and external room thermostat control, the protection is NOT guaranteed.

NOTICE
Water pipe freeze prevention. Even if you turn OFF space heating/cooling operation ([C.2]: Operation > Space heating/cooling), water pipe freeze prevention –if enabled– will remain active.

Tank heating operation

NOTICE
Disinfection mode. Even if you turn OFF tank heating operation ([C.3]: Operation > Tank), disinfection mode will remain active. However, if you turn it OFF while disinfection is running, an AH error occurs.

Reading out information

To read out information

1| Go to [8]: Information.| ****

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Possible read-out information

temperature (if applicable)
[8.5] Actuators| Status/mode of each actuator

Example: Domestic hot water pump ON/OFF

[8.6] Operation modes| Current operation mode

Example: Defrost/oil return mode

[8.7] About| Version information about the system
[8.8] Connection status| Information about the connection status of the unit, the room thermostat and the LAN adapter.
[8.9] Running hours| Running hours of specific system components

Space heating/cooling control

Setting the space operation mode
About space operation modes
This unit is a heating only model. The system can heat up a space, but NOT cool down a space. However, if the kit EKHVCONV* is installed, the system can cool down a space, and you have to tell the system which space operation mode to use: heating or cooling. To tell the system which space operation to use, you can:

Restrict automatic changeover according to a monthly schedule.

To set the space operation mode

1| Go to [4.1]: Space heating/cooling > Operation mode| ****

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2| Select one of the following options:

▪     Heating: Only heating mode

▪     Cooling: Only cooling mode

▪     Automatic: The operation mode changes automatically between heating and cooling based on the outdoor temperature. Restricted per month according to the Operation mode schedule [4.2].

| ****

To restrict automatic changeover according to a schedule
Conditions: You set the space operation mode to Automatic.

1| Go to [4.2]: Space heating/cooling > Operation mode schedule.|

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2| Select a month.|

3| For each month, select an option:

▪     Reversible: Not restricted

▪     Heating only: Restricted

▪     Cooling only: Restricted

|

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4| Confirm the changes.|

To change the desired room temperature
During room temperature control, you can use the room temperature setpoint screen to read out and adjust the desired room temperature.

If scheduling is on after changing the desired room temperature

• The temperature will stay the same as long as there is no scheduled action.
• The desired room temperature will return to its scheduled value whenever a scheduled action occurs.

You can avoid scheduled behaviour by (temporarily) turning off scheduling.
To turn off room temperature scheduling

1| Go to [1.1]: Room > Schedule.| ****

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2| Select No.| ****

To change the desired leaving water temperature

INFORMATION
The leaving water is the water that is sent to the heat emitters. The desired leaving water temperature is set by your installer in accordance with the heat emitter type. Only adjust the leaving water temperature settings in case of problems.

You can use the leaving water temperature setpoint screen to read out and adjust the desired leaving water temperature.

Domestic hot water control

Reheat mode
In reheat mode the DHW  tank continuously heats up to the temperature shown on the home screen (example: 50°C) when the temperature drops below a certain value.

INFORMATION
When the DHW tank mode is reheat, the risk for capacity shortage and comfort problem is significant. In case of frequent reheat operation, space heating/cooling function is regularly interrupted.

Scheduled mode
In scheduled mode the DHW tank produces hot water corresponding to a schedule. The best time to allow the tank to produce hot water is at night, because the space heating demand is lower.

Example:

• Initially, the DHW  tank temperature is the same as the temperature of the domestic water entering the DHW  tank (example: 15°C).
• At 00:00 the DHW tank is programmed to heat up the water to a preset value (example: Comfort = 60°C).
• During the morning, you consume hot water and the DHW  tank temperature decreases.
• At 14:00 the DHW tank is programmed to heat up the water to a preset value (example: Eco = 50°C). Hot water is available again.
• During the afternoon and evening, you consume hot water again and the DHW tank temperature decreases again.
• At 00:00 the next day, the cycle repeats.

Scheduled + reheat mode
In scheduled + reheat mode, the domestic hot water control is the same as in scheduled mode. However, when the DHW  tank temperature drops below a preset value (=reheat tank temperature –hysteresis value; example: 35°C), the DHW tank heats up until it reaches the reheat set point (example: 45°C). This ensures that a minimum amount of hot water is available at all times.

Example:

Using DHW powerful operation

About powerful operation
The powerful operation allows the domestic hot water to be heated by the backup heater. Use this mode on days when there is more hot water usage than usual.

To check if powerful operation is active
is displayed on the home screen, powerful operation is active. Activate or deactivate Powerful operation as follows:

1| Go to [5.1]: Tank > Powerful operation|
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2| Turn powerful operation Off or On.|

Usage example: You immediately need more hot water You are in the following situation:

• You already consumed most of your domestic hot water.
• You cannot wait for the next scheduled action to heat up the domestic hot water tank.

Then you can activate powerful operation. The domestic hot water tank will start heating up the water to the Comfort temperature.

INFORMATION
When powerful operation is active, the risk of space heating/cooling and capacity shortage comfort problems is significant. In case of frequent domestic hot water operation, frequent and long space heating/cooling interruptions will happen.

Schedule screen: Example
This example shows how to set a room temperature schedule in heating mode for the main zone.

INFORMATION
The procedures to program other schedules are similar.

To program the schedule: overview
Example: You want to program the following schedule:

Prerequisite: The room temperature schedule is only available if room thermostat control is active. If leaving water temperature control is active, you can program the main zone schedule instead.

1. Go to the schedule.
2. (optional) Clear the content of the whole week schedule or the content of a selected day schedule.
3. Program the schedule for Monday.
4. Copy the schedule to the other weekdays.
5. Program the schedule for Saturday and copy it to Sunday.
6. Give the schedule a name.

To go to the schedule

1| Go to [1.1]: Room > Schedule.| ****

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2| Set scheduling to Yes.| ****

3| Go to [1.2]: Room > Heating schedule.| ****

To clear the content of the week schedule

To clear the content of a day schedule

To program the schedule for Monday

To copy the schedule to the other weekdays

To program the schedule for Saturday and copy it to Sunday To rename the schedule

INFORMATION
Not all schedules can be renamed.

Weather-dependent curve

What is a weather-dependent curve?
Weather-dependent operation
The unit operates ‘weather dependent’ if the desired leaving water or tank temperature is determined automatically by the outdoor temperature. It therefore is connected to a temperature sensor on the North wall of the building. If the outdoor temperature drops or rises, the unit compensates instantly. Thus, the unit does not have to wait for feedback by the thermostat to increase or decrease the temperature of the leaving water or tank. Because it reacts more quickly, it prevents high rises and drops of the indoor temperature and water temperature at tap points.

Advantage
Weather-dependent operation reduces energy consumption.

Weather-dependent curve
To be able to compensate for differences in temperature, the unit relies on its weather-dependent curve. This curve defines how much the temperature of the tank or leaving water must be at different outdoor temperatures. Because the slope of the curve depends on local circumstances such as climate and the insulation of the house, the curve can be adjusted by an installer or user.

Types of the weather-dependent curve
There are 2 types of weather-dependent curves:

• 2-points curve
• Slope-offset curve

Which type of curve you use to make adjustments, depends on your personal preference. See “5.9.4  Using weather-dependent curves” [4 17].
Availability

The weather-dependent curve is available for:

• Main zone – Heating
• Main zone – Cooling
• Additional zone – Heating
• Additional zone – Cooling
• Tank (only available to installers)

INFORMATION
To operate weather dependent, correctly configure the setpoint of the main zone, additional zone or tank. See “5.9.4 Using weather-dependent curves” [4 17].

points curve
Define the weather-dependent curve with these two setpoints:

• Setpoint (X1, Y2)
• Setpoint (X2, Y1)

Example

Slope-offset curve
Slope and offset
Define the weather-dependent curve by its slope and offset:

• Change the slope to differently increase or decrease the temperature of the leaving water for different ambient temperatures. For example, if leaving water temperature is in general fine but at low ambient temperatures too cold, raise the slope so that leaving water temperature is heated increasingly more at decreasingly lower ambient temperatures.
• Change the offset to equally increase or decrease the temperature of the leaving water for different ambient temperatures. For example, if leaving water temperature is always a bit too cold at different ambient temperatures, shift the offset up to equally increase the leaving water temperature for all ambient temperatures.

Examples
Weather-dependent curve when slope is selected:

Using weather-dependent curves
Configure weather-dependent curves as follows:

To define the setpoint mode
To use the weather-dependent curve, you need to define the correct setpoint mode:

Main zone – Heating
[2.4] Main zone > Setpoint mode| WD heating, fixed cooling

OR Weather dependent

Main zone – Cooling
[2.4] Main zone > Setpoint mode| Weather dependent
Additional zone – Heating
[3.4] Additional zone >

Setpoint mode

| WD heating, fixed cooling

OR Weather dependent

Additional zone – Cooling
[3.4] Additional zone >

Setpoint mode

| Weather dependent
Tank
[5.B] Tank > Setpoint mode| Restriction: Only available to installers.

Weather dependent

To change the type of weather-dependent curve
To change the type for all zones (main + additional) and for the tank, go to [2.E] Main zone > WD curve type. Viewing which type is selected is also possible via:

• [3.C] Additional zone > WD curve type
• [5.E] Tank > WD curve type Restriction: Only available to installers.

To change the weather-dependent curve

Heating WD curve

Additional zone – Cooling| [3.6] Additional zone >

Cooling WD curve

curve

INFORMATION
Maximum and minimum setpoints
You cannot configure the curve with temperatures that are higher or lower than the set maximum and minimum setpoints for that zone or for the tank. When the maximum or minimum setpoint is reached, the curve flattens out.

To fine-tune the weather-dependent curve: slope-offset curve
The following table describes how to fine-tune the weather-dependent curve of a zone or tank:

Energy-saving tips

Tips about room temperature

• Make sure the desired room temperature is NEVER too high (in heating mode) or too low (in cooling mode), but ALWAYS according to your actual needs. Each saved degree can save up to 6% of heating/cooling costs.
• Do NOT increase/decrease the desired room temperature to speed up space heating/cooling. The space will NOT heat up/cool down faster.
• When your system layout contains slow heat emitters (example: underfloor heating), avoid large fluctuation of the desired room temperature and do NOT let the room temperature drop too low/rise too high. It will take more time and energy to heat up/cool down the room again.

Maintenance and service

Tips about DHW tank temperature

• Use a weekly schedule for your normal domestic hot water needs (only in scheduled mode).
• Program to heat up the DHW tank to a preset value (Comfort = higher DHW tank temperature) during the night, because then space heating demand is lower.
• If heating up the DHW  tank once at night is not sufficient, program to additionally heat up the DHW tank to a preset value (Eco = lower DHW tank temperature) during the day.
• Make sure the desired DHW  tank temperature is NOT too high. Example: After installation, lower the DHW tank temperature daily by 1°C and check if you still have enough hot water.
• Program to turn ON the domestic hot water pump only during periods of the day when instant hot water is necessary. Example: In the morning and evening.

The installer has to perform a yearly maintenance. You can find the contact/helpdesk number via the user interface.

Go to [8.3]: Information > Dealer information.As end user, you have to:

• Keep the area around the unit clean.
• Keep the user interface clean with a soft damp cloth. Do NOT use any detergents.

Refrigerant
This product contains fluorinated greenhouse gases. Do NOT vent gases into the atmosphere.

• Refrigerant type: R32
• Global warming potential (GWP) value: 675

NOTICE
Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO2 equivalent. Formula to calculate the quantity in CO2 equivalent tonnes: GWP value of the refrigerant × total refrigerant charge [in kg] / 1000 Please contact your installer for more information.

WARNING: FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable.

WARNING

• Do NOT pierce or burn refrigerant cycle parts.
• Do NOT use cleaning materials or means to accelerate the defrosting process other than those recommended by the manufacturer.
• Be aware that the refrigerant inside the system is odourless.

The refrigerant inside the unit is mildly flammable, but normally does NOT leak. If the refrigerant leaks in the room and comes in contact with fire from a burner, a heater, or a cooker, this may result in fire, or the formation of a harmful gas.
Turn off any combustible heating devices, ventilate the room, and contact the dealer where you purchased the unit. Do NOT use the unit until a service person confirms that the part from which the refrigerant leaked has been repaired.

Troubleshooting

Contact
For the symptoms listed below, you can try to solve the problem yourself. For any other problem, contact your installer. You can find the contact/helpdesk number via the user interface.

Go to [8.3]: Information > Dealer information.

To display the help text in case of a malfunction

In case of a malfunction, the following will appear on the home screen depending on the severity:

• Error
• Malfunction

You can get a short and a long description of the malfunction as follows:

1. Press the left dial to open the main menu and go to Malfunctioning. Result: A short description of the error and the error code is displayed on the screen.
2. Press in the error screen. Result: A long description of the error is displayed on the screen.

To check the malfunction history

Conditions: The user permission level is set to advanced end user. Go to [8.2]: Information > Malfunction history. You see a list of the most recent malfunctions.

Symptom: You are feeling too cold (hot) in your living room

immediately need domestic hot water, activate the DHW tank Powerful operation. However, this consumes extra energy. See “5.7.4 Using DHW powerful operation” 4[  13].

If the problems recurs daily, do one of the following:

▪     Increase the DHW tank temperature preset value. See the user reference guide.

▪     Adjust the DHW tank temperature schedule. Example: Program to additionally heat  up   the DHW tank to a preset value (Eco setpoint = lower tank temperature) during the day. See “5.8 Schedule screen: Example” 4[  14].

The desired DHW tank temperature is too low.

Symptom: You are feeling too cold (hot) in your living room

desired room temperature. See “5.6.2 To change the desired room temperature” 4[  12].

If the problem recurs daily, do one of the following:

▪     Increase (decrease) the room temperature preset value. See the user reference guide.

▪     Adjust the room temperature schedule. See “5.8 Schedule screen: Example” 4[  14].

The desired room temperature cannot be reached.| Increase the desired leaving water temperature in accordance with the heat emitter type. See “5.6.3 To change the desired leaving water temperature” 4[  12].
The weather-dependent curve is set incorrectly.| Adjust the weather-dependent curve. See “5.9 Weather- dependent curve” 4[  15].

Symptom: Heat pump failure

When the heat pump fails to operate, the backup heater can serve as an emergency heater. It then takes over the heat load either automatically or by manual interaction.

• When Emergency is set to Automatic and a heat pump failure occurs, the backup heater automatically takes over the domestic hot water production and space heating.
• When Emergency is set to Manual and a heat pump failure occurs, the domestic hot water heating and space heating stops. To manually recover it via the user interface, go to the Malfunctioning main menu screen and confirm whether the backup heater can take over the heat load or not.
• Alternatively, when Emergency is set to:
• auto SH reduced/DHW on, space heating is reduced but domestic hot water is still available.
• auto SH reduced/DHW off, space heating is reduced and domestic hot water is NOT available.
• auto SH normal/DHW off, space heating operates as normally but domestic hot water is NOT available.

Similarly as in Manual mode, the unit can take the full load with the backup heater if the user activates this via the Malfunctioning main menu screen.

When the heat pump fails, will appear on the user interface.

malfunction” 4[  18].

INFORMATION
When the backup heater takes over the heat load, electricity consumption will be considerably higher.

Symptom: The system is making gurgling noises after commissioning

that the flow is correctly              distributed between the emitters.

2         If hydraulic balancing is not sufficient, change the pump limitation settings ([9-0D] and [9-0E] if applicable).

Various malfunctions.| Check if  or  is displayed on the home screen of the user interface. See “8.1 To display the help text in case of a malfunction” 4[ 18] for more information about the malfunction.

(a) We recommend to purge air with the air purge function of the unit (to be performed by the installer). If you purge air from the heat emitters or collectors, mind the following:

WARNING
Air purging heat emitters or collectors. Before you purge air from heat emitters or collectors, check if or is displayed on the home screen of the user interface.

• If not, you can purge air immediately.
• If yes, make sure that the room where you want to purge air is sufficiently ventilated. Reason: Refrigerant might leak into the water circuit, and subsequently into the room when you purge air from the heat emitters or collectors.

Disposal

NOTICE

Do NOT try to dismantle the system yourself: dismantling of the system, treatment of the refrigerant, oil and other parts MUST comply with applicable legislation. Units MUST be treated at a specialised treatment facility for reuse, recycling and recovery.

Glossary

DHW = Domestic hot water

Hot water used, in any type of building, for domestic purposes.

LWT = Leaving water temperature

Water temperature at the water outlet of the unit.

Installer settings: Tables to be filled in by the installer

Configuration wizard

System
| Indoor unit type (read only)|
Backup heater type [9.3.1] (read only)|
Domestic hot water [9.2.1]|
Emergency [9.5]|
Number of zones [4.4]|
Glycol Filled system

(overview field setting [E‑0D])

|
Backup heater
| Voltage [9.3.2]|
Configuration [9.3.3]|
Capacity step 1 [9.3.4]|
Additional capacity step 2 [9.3.5] (if applicable)|
Main zone
| Emitter type [2.7]|
Control [2.9]|
Setpoint mode [2.4]|
Schedule [2.1]|
WD curve type [2.E]|
Additional zone (only if [4.4]=1, dual zone)
| Emitter type [3.7]|
Control (read only) [3.9]|
Setpoint mode [3.4]|
Schedule [3.1]|
WD curve type [3.C] (read only)|
Tank
Setting| Fill in…
---|---
| Heat up mode [5.6]|
Comfort setpoint [5.2]|
Eco setpoint [5.3]|
Reheat setpoint [5.4]|
Setpoint mode [5.B]|
WD curve type [5.E] (read only)|

Settings menu

Main zone
| Thermostat type [2.A]|
Additional zone (if applicable)
| Thermostat type [3.A]|
Information
| Dealer information [8.3]|

References

• Internet - DENV | Daikin
• Internet - DENV | Daikin
• Internet - DENV | Daikin
• Daikin Onecta | Daikin

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