DAIKIN EWSAH06DA9W Altherma 3 WS Water Heat Pump System User Manual

: June 6, 2024
: Daikin

Operation manual
Daikin Altherma 3 WS

EWSAH06DA9W EWSAH06UDA9W
EWSAX06DA9W EWSAX06UDA9W

About this document

Thank you for purchasing this product. Please:

Read the documentation carefully before operating the user interface to ensure the best possible performance.
Request the installer to inform you about the settings that he used to configure your system. Check if he has filled in the installer settings tables. If NOT, request him to do so.
Keep the documentation for future reference.
Target audience
End users
Documentation set
This document is part of a documentation set. The complete set consists of:
General safety precautions :
- Safety instructions that you must read before installing
- Format: Paper (in the box of the unit)
Operation manual:
- Quick guide for basic usage
- Format: Paper (in the box of the unit)
User reference guide:
- Detailed step-by-step instructions and background information for basic and advanced usage
- Format: Digital files on http://www.daikineurope.com/supportand-manuals/product-information/
Installation manual:
- Installation instructions
- Format: Paper (in the box of the unit)
Installer reference guide:
- Preparation of the installation, good practices, reference data, …
- Format: Digital files on http://www.daikineurope.com/supportand-manuals/product-information/
Addendum book for optional equipment:
- Additional info about how to install optional equipment
- Format: Paper (in the box of the unit) + Digital files on http:// www.daikineurope.com/support-and-manuals/productinformation/

Latest revisions of the supplied documentation may be available on the regional Daikin website or via your installer. The original documentation is written in English. All other languages are translations.
Daikin Residential Controller app

If set up by your installer, you can use the Daikin Residential Controller app to control and monitor the status of your system. For more information, see:

http://www.onlinecontroller.daikineurope.com/

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.| ?
---|---|---
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.|
---|---|---
1| Starting from the home screen, turn the left dial and go to Space heating/cooling.
|
---|---|---
2| Press the left dial to enter the submenu.|
3| Turn the left dial and go to Operation range.
|
4| Press the left dial to enter the submenu.|

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

Components in a typical system layout

A Main zone. Example: Living room.
B Additional zone. Example: Bedroom.
C Technical room. Example: Garage.
a Central water loop circuit
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
---|---

Operation

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.

LED	Mode	Description
Blinking blue	Standby	The unit is not in operation.
Continuous blue	Operation	The unit is in operation.
Blinking red	Malfunction	A malfunction occurred. See “6.1 To display the

help text
in case of a malfunction” [ 14] for more information.

LCD screen
The LCD screen has a sleeping function. After 15 min of noninteraction 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
Item| Description
---|---
a| Left dial| The LCD shows an arc on the left side of the display when 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.

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.

Possible actions on this screen

| Go through the list of the main menu.
---|---
| Go to the main menu screen.
?| Enable/disable breadcrumbs.

Item	Description
a	Domestic hot water
a1
a2
b	Current date and time
c	Disinfection / Powerful
Disinfection mode active
PowPowerful operation mode active
d	Emergency
Heat pump failure and system operates in Emergency mode or heat pump is

(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

Possible actions on this screen

| Go through the list.
| Enter the submenu.
?| Enable/disable breadcrumbs.
Submenu| Description
---|---
[0]|
Malfunctioning| Restriction: Only displayed if a malfunction occurs.
See ‘6.1 To display the help text in case of a malfunction” fr 14) for more information.
[1]| Room| Restriction: Only displayed if a dedicated Human Comfort Interface (BRC1HHDA used as room thermostat) is controlling the indoor unit.
Set the room temperature.
[2]| | Shows the applicable symbol for your main zone emitter type.
Set the leaving water temperature for the main zone.
Main zone
[3]| Additional zone| Restriction: Only displayed if there are two leaving water temperature zones. Shows the applicable symbol for your additional zone emitter type.
Set the leaving water temperature for the additional zone (if present).
[4]| Space heating/ cooling| Shows the applicable symbol of your unit.
Put the unit in heating mode or cooling mode. You cannot change the mode on heating only models.
[5]| Tank| Set the domestic hot water tank temperature.
[7]| User settings| Gives access to user settings such as holiday mode and quiet mode.
[8]| Information| Displays data and information about the indoor unit.
[9]| Installer settings| Restriction: Only for the installer. Gives access to advanced settings.
[A]| Commissioning| Restriction: Only for the installer. Perform tests and maintenance.
[B]| User profile| Change the active user profile.
[C]| Operation| Turn heating/cooling functionality and domestic hot water preparation on a off.

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

Operation

Explanation

Possible actions on this screen

| Go through the list.
| Enter the submenu.
| Adjust and automatically apply the desired temperature.

Item	Description
Minimum temperature limit	al
a2	Restricted by the installer
Maximum temperature limit	bl
b2	Restricted by the installer
Current temperature	c
Desired temperature	d
Submenu	e

Detailed screen with values
Example:

a Settings
b Values
c Selected setting and value

Possible actions on this screen

| Go through the list of settings.
---|---
| Change the value.
| Go to the next setting.
| Confirm changes and proceed.

Turning operation ON or OFF

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

Room temperature control

a Room temperature control ON
b Room temperature control OFF

Space heating/cooling operation
c Space heating/cooling operation ON
d Space heating/cooling operation OFF

Tank heating operation
e Tank heating operation ON
f Tank heating operation OFF

To turn ON or OFF

Room temperature control

1| Go to [C.1]: Operation > Room.
|
---|---|---
2| Set operation to 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.

1| Go to [C.2]: Operation > Space heating/cooling.
|
---|---|---
2| Set operation to On or Off.|

Space heating/cooling control

Setting the space operation mode
About space operation modes
Your unit can be a heating or a heating/cooling model:

If your unit is a heating model, it can heat up a space.
If your unit is a heating/cooling model, it can both heat up and cool down a space. You have to tell the system which operation mode to use.
To tell the system which space operation to use, you can: You can…| Location
---|---
Check which space operation mode is currently used.| Home screen
Set the space operation mode permanently.| Main menu
Restrict automatic changeover according to a monthly schedule.

To set the space operation mode

1| Go to [4.1]: Space heating/cooling > Operation mode|
---|---|---
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.|
---|---|---
2| Select a month.|
3| For each month, select an option:
▪ Reversible: Not restricted
▪ Heating only: Restricted
▪ Cooling only: Restricted|
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.

1| Go to [1]: Room.
|
---|---|---
2| Adjust the desired room temperature.
a Actual room temperature
b 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.|
---|---|---
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.

Operation

1| Go to [2]: Main zone or [3]: Additional zone.
|
---|---|---
2| Adjust the desired leaving water temperature.

a Actual leaving water temperature
b 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
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
If 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|
---|---|---
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.

Advanced usage

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

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

To change the user permission level
You can change the user permission level as follows:

1| Go to [B]: User profile.|
---|---|---
2| Enter the applicable pin code for the user permission level.
Go to [B]: User profile.
| _
▪ Browse through the list of digits and change the selected digit.|
▪ Move the cursor from left to right.|
▪ Confirm the pin code and proceed.|

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.
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.

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

To go to the schedule

1| Go to [1.1]: Room > Schedule.|
---|---|---
2| Set scheduling to Yes.|
3| Go to [1.2]: Room > Heating schedule.|

To clear the content of the week schedule

1| Select the name of the current schedule.|
---|---|---
2| Select Delete.|
3| Select OK to confirm.|

To clear the content of a day schedule

1| Select the day of which you want to clear the content. For example Friday
|
---|---|---
2| Select Delete.
|
3| Select OK to confirm.|

To program the schedule for Monday

1| Select Monday.
|
---|---|---
2| Select Edit.
|
3| Use the left dial to select an entry and edit the entry with the right dial. You can program up to 6 actions each day. On the bar, a high temperature has a darker colour than a low temperature.

Note: To clear an action, set its time as the time of the previous action.|
4| Confirm the changes.
Result: The schedule for Monday is defined. The value of the last action is valid until the next
programmed action. In this example, Monday is the first day you programmed. Thus, the last programmed action is valid up to the first action of next Monday.|

To copy the schedule to the other weekdays

1| Select Monday.
|
---|---|---
2| Select Copy.

Result: Next to the copied day, “C” is displayed.|
3| Select Tuesday.
|
4| Select Paste.

Result:|
5| Repeat this action for all other weekdays.
| _

To program the schedule for Saturday and copy it to Sunday

1| Select Saturday.|
---|---|---
2| Select Edit.|
3| Use the left dial to select an entry and edit the entry with the right dial.
|
4| Confirm the changes.|
5| Select Saturday.|
6| Select Copy.|
7| Select Sunday.|
8| Select Paste.
**Result:

**|

To rename the schedule

1| Select the name of the current schedule.
|
---|---|---
2| Select Rename.
|
3| (optional) To delete the current schedule name, browse through the character list until ← is displayed, then press to remove the previous character. Repeat for each character of the schedule name.|
4| To name the current schedule, browse through the character list and confirm the selected character.
The schedule name can contain up to 15 characters.|
5| Confirm the new name.|

INFORMATION
Not all schedules can be renamed.

Setpoint screen
(*) Not applicable
(**) Only accessible by installer

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

Installer settings: Tables to be filled in by installer

Configuration wizard

Setting	Fill In…

Settings menu

Setting	I Fill in…
Main zone
Thermostat type [2.A]
Additional zone (if applicable)
I Thermostat type [3.A]
Information
‘Dealer information [8.3]

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.
Use a weekly schedule for your normal space heating or cooling needs. If necessary, you can easily deviate from the schedule:
For shorter periods: You can overrule the scheduled room temperature until the next scheduled action. Example: When you have a party, or when you are leaving for a couple of hours.
For longer periods: You can use the holiday mode.

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.

Maintenance and service

Overview: Maintenance and service

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

1| 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.
Regularly check if the water pressure is above 1 bar.

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
The appliance shall be stored in a 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.

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.

1| 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.| ?**

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

Possible cause	Corrective action
The desired room temperature is too low (high).	Increase (decrease) the

desired room temperature. See “3.4.2 To change the desired room
temperature” [ ****7].
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 “3.7 Schedule screen: Example” [ ****9].

The desired room temperature cannot be reached.| Increase the desired leaving water temperature in accordance with the heat emitter type. See “3.4.3 To change the desired leaving water temperature” [ ****7].
The weather-dependent curve is set incorrectly.| Adjust the weather-dependent curve. See the user reference guide.

Symptom: The water at the tap is too cold

Possible cause	Corrective action
You ran out of domestic hot water because of unusually high consumption.	If

you immediately need domestic hot water, activate the DHW tank
Powerful operation. However, this consumes extra energy. See “3.5.4 Using DHW powerful operation” [ ****8].
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 “3.7 Schedule screen: Example” [ ****9].

The desired DHW tank temperature is too low.

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.

Possible cause	Corrective action
Heat pump is damaged.	See “6.1 To display the help text in case of a

malfunction” [ ****14].

Symptom: The system is making gurgling noises after commissioning

Possible cause	Corrective action
There is air in the system.	Purge air from the system.(a)
Incorrect hydraulic balance.	To be performed by the installer:

1 Perform hydraulic balancing to assure 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 “6.1 To display the
help text in case of a malfunction” [ ****14] 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 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.