About the documentation
Meaning of warnings and symbols
For the installer
- General
- Installation site
- Refrigerant
- Brine
- Water
- Electrical
NEVER squeeze the cable bundle and make sure they do not come into contact with pipes and sharp edges. When installing the earth leakage protection, make sure that it is compatible with the inverter (resistant to high frequency electrical noise) to avoid opening the earth leakage protection unnecessarily.
Installer reference guide at a glance
All field wiring must be done in accordance with the wiring diagram provided with the product. This chapter describes what to do after the outdoor and indoor unit boxes are delivered to the site.
Outdoor unit
To unpack the outdoor unit
Field Settings Table Table must be completed by the installer and retained for future reference. This table must be completed by the installer and handed over to the user.
To handle the outdoor unit
To remove the accessories from the outdoor unit
Indoor unit
To unpack the indoor unit
To remove the accessories from the indoor unit
Be careful with your fingers, there are sharp edges on the lower part of the face plate.
Identification
Identification label: Outdoor unit
Identification label: Indoor unit
Combining units and options
Possible options for the outdoor unit
Possible options for the indoor unit
Optionally, the external indoor sensor can be installed to measure the room temperature at another location. For installation instructions, see the installation manual of the remote indoor sensor and the addendum book for optional equipment.
Possible combinations of indoor unit and outdoor
The external indoor sensor can only be used if the user interface is configured with room thermostat functionality. Optionally, the external outdoor sensor can be installed to measure the outdoor temperature at a different location (e.g. to avoid direct sunlight) for improved system behavior.
Setting up the space heating system
Multiple rooms – Two LWT zones
For installation instructions, refer to the installation manual of the heat pump convectors and the supplementary book for optional equipment. 2 (RT Control): The operation of the unit is decided based on the ambient temperature of the user interface.
Setting up the domestic hot water tank
- System layout – Integrated DHW tank
- Selecting the volume and desired temperature for
- Setup and configuration – DHW tank
- DHW pump for instant hot water
- DHW pump for disinfection
If energy prices are lower during the night, Daikin recommends heating the hot water tank during the night. If you use a lot of domestic water, you can heat up the hot water tank several times during the day.
Setting up the energy metering
- Produced heat
- Consumed energy
- Normal kWh rate power supply
- Preferential kWh rate power supply
The software adds the energy consumption data from both meters, so you do NOT have to set which meter covers which energy consumption. Power meter 1: Single or three phase power meter depending on the power supply of the outdoor unit.
Setting up the power consumption control
Permanent power limitation
Power limitation activated by digital inputs
For the specifications of the digital inputs and where to connect them, refer to the wiring diagram. If more than 1 digital input is closed (at the same time), the digital input priority is fixed: DI4 priority>...>DI1.
Power limitation process
Setting up an external temperature sensor
Preparing installation site
Installation site requirements of the outdoor unit
Strong winds (≥18 km/h) blowing against the outdoor unit's air outlet cause short-circuiting (suction of exhaust air). It is recommended to install the outdoor unit with the air inlet facing the wall and NOT directly exposed to the wind.
Additional installation site requirements of the
This is to prevent corrosion caused by high levels of salt in the air, which can shorten the life of the unit. The outdoor unit is designed for outdoor installation only and for ambient temperatures ranging from 10~43°C in cooling mode and –25~25°C in heating mode.
Installation site requirements of the indoor unit
Preparing refrigerant piping
Refrigerant piping requirements
Refrigerant piping insulation
Preparing water piping
- Water circuit requirements
- Formula to calculate the expansion vessel pre-
- To check the water volume and flow rate
- Changing the pre-pressure of the expansion vessel
- To check the water volume: Examples
This is the height difference (m) between the highest point in the water circuit and the indoor unit. Inappropriate setting of the pre-pressure of the expansion tank will lead to system malfunction.
Preparing electrical wiring
- About preparing electrical wiring
- About preferential kWh rate power supply
- Overview of electrical connections except external
- Overview of electrical connections for external and
2 During activation of the power supply according to the priority kWh tariff, the power supply is interrupted immediately or after a certain time by the electricity company. 4 Power supply according to the preferential kWh tariff (voltage-free contact) 5 Power supply according to the normal kWh tariff (for powering the indoor unit . PCB in case of power interruption for power supply according to the preferential kWh tariff).
Opening the units
- About opening the units
- To open the outdoor unit
- To open the indoor unit
- To open the switch box cover of the indoor unit
More technical specifications of the different connections are indicated on the inside of the indoor unit. Depending on the units and/or installation conditions, it may be necessary to connect electrical wiring before charging refrigerant.
Mounting the outdoor unit
- About mounting the outdoor unit
- Precautions when mounting the outdoor unit
- To provide the installation structure
- To install the outdoor unit
- To provide drainage
- To prevent the outdoor unit from falling over
If the drainage holes of the outdoor unit are covered by a mounting base or the floor surface, raise the unit to provide a clearance of more than 150 mm below the outdoor unit. 3 Insert a rubber sheet between the cables and the outdoor unit to prevent the cable from scratching the paint (optional).
Mounting the indoor unit
About mounting the indoor unit
If you install the unit in a frame, install a waterproof plate within 150 mm of the bottom of the unit to prevent water from seeping into the unit and to avoid drain water dripping (see illustration below).
Precautions when mounting the indoor unit
To install the indoor unit
Connecting the refrigerant piping
- About connecting the refrigerant piping
- Precautions when connecting the refrigerant piping
- Guidelines when connecting the refrigerant piping
- Pipe bending guidelines
- To flare the pipe end
- To braze the pipe end
- Using the stop valve and service port
- To connect the refrigerant piping to the outdoor unit
- To connect the refrigerant piping to the indoor unit
- To determine if oil traps are required
3 Remove the flare nut from the valve and place the flare nut on the pipe. Be sure to open the stop valves after installing the refrigerant pipes and performing vacuum drying.
Checking the refrigerant piping
- About checking the refrigerant piping
- Precautions when checking the refrigerant piping
- Checking refrigerant piping: Setup
- To check for leaks
- To perform vacuum drying
1 Connect the liquid stop valve of the outdoor unit to the refrigerant liquid connection of the indoor unit. 2 Connect the gas stop valve of the outdoor unit to the refrigerant gas connection of the indoor unit.
Charging refrigerant
- About charging refrigerant
- Precautions when charging refrigerant
- To determine the additional refrigerant amount
- To determine the complete recharge amount
- To charge refrigerant
- To fix the fluorinated greenhouse gases label
In Europe, the greenhouse gas emissions of the total refrigerant charge in the system (expressed in tonnes of CO2 equivalent) are used to determine maintenance intervals. 2 Attach the label to the inside of the outdoor unit, near the gas and liquid valves.
Connecting the water piping
- About connecting the water piping
- Precautions when connecting the water piping
- To connect the water piping
- To connect the recirculation piping
- To connect the pressure relief valve to the drain
- To fill the water circuit
- To fill the domestic hot water tank
- To insulate the water piping
A drain device and pressure relief device must be installed on the cold water inlet connection of the domestic hot water cylinder. It is recommended to install the pressure relief valve at a higher position than the top of the domestic hot water tank.
Connecting the electrical wiring
- About connecting the electrical wiring
- About electrical compliance
- Precautions when connecting the electrical wiring
- Guidelines when connecting the electrical wiring
- Specifications of standard wiring components
- To connect the electrical wiring on the outdoor unit
- To reposition the air thermistor on the outdoor unit
- To connect the electrical wiring on the indoor unit
- To connect the main power supply
- To connect the backup heater power supply
- To connect the user interface
- To connect the shut-off valve
- To connect the electrical meters
- To connect the domestic hot water pump
- To connect the alarm output
- To connect the power consumption digital inputs
- To connect the safety thermostat (normal closed
1 Make sure that the power supply system meets the electrical specifications of the heat pump. 3 Use the 2 screws in the accessory bag to fix the wall plate of the user interface to the sheet metal of the unit.
Finishing the outdoor unit installation
To finish the outdoor unit installation
To close the outdoor unit
Finishing the indoor unit installation
- To fix the user interface cover to the indoor unit
- To close the indoor unit
- To connect the PC cable to the switch box
- To access the most used commands
- To copy the system settings from the first to the
- To copy the language set from the first to the second
- Quick wizard: Set the system layout after first power
2 Press for 4 seconds the user interface where you want to proceed to the quick wizard. 5 The user interface will be reinitialized and you can continue with the installation by setting the other applicable settings and commissioning the system.
Basic configuration
- Quick wizard: Language / time and date
- Quick wizard: Standard
- Quick wizard: Options
- Quick wizard: Capacities (energy metering)
- Space heating control
- Domestic hot water control
- Contact/helpdesk number
1-02]: Desired leaving water temperature when the outdoor temperature is equal to or falls below the low ambient temperature. Note: The desired leaving water temperature can only be read on the user interface.
Advanced configuration/optimization
- Space heating operation: advanced
- Domestic hot water control: advanced
- Heat source settings
- System settings
The desired leaving water temperature is the result of several settings (default values, offset values, weather-dependent curves, modulation). Leaving water temperature range for the main leaving water temperature zone (= leaving water temperature zone with the lowest leaving water temperature).
Menu structure: Overview user settings
Menu structure: Overview installer settings
0-01]: Desired leaving water temperature when the outdoor temperature is equal to or falls below the low ambient temperature. Leaving water temperature range for the additional leaving water temperature zone (= the leaving water temperature zone with the highest leaving water temperature).
Precautions when commissioning
This chapter describes what you need to do and know to get the system up and running after it has been configured.
Checklist before commissioning
Checklist during commissioning
- To check the minimum flow rate
- Air purge function
- To perform a test run
- To perform an actuator test run
- Underfloor heating screed dryout
7 If applicable, set the desired 3-way valve position (space heating/domestic hot water). 8 Use the and buttons to set the desired position of the 3-way valve (space heating/domestic hot water).
Maintenance safety precautions
Opening the indoor unit
When the program stops due to an error, shutdown, or power failure, the user interface displays error U3. Explain to the user how to properly operate the system and what to do in case of problems.
Checklist for yearly maintenance of the outdoor unit
Make sure the user has the printed documentation and ask him/her to keep it for future reference. Inform the user that he can find the complete documentation at the url as described earlier in this manual.
Checklist for yearly maintenance of the indoor unit
To drain the domestic hot water tank
Perform a thorough visual inspection of the unit and look for obvious defects such as loose connections or faulty wiring.
Precautions when troubleshooting
Solving problems based on symptoms
- Symptom: The unit is NOT heating as expected
- Symptom: The compressor does NOT start (space
- Symptom: The pump is making noise (cavitation)
- Symptom: The pressure relief valve opens
- Symptom: The water pressure relief valve leaks
- Symptom: The space is NOT sufficiently heated at
- Symptom: The pressure at the tapping point is
- Symptom: Decoration panels are pushed away due
- Symptom: Tank disinfection function is NOT
Possible Causes Corrective Action There is air in the system Manually bleed both. Make sure that the amount of water in the installation is below the maximum permissible value (see.
Solving problems based on error codes
Error codes: Overview
Program the start of the disinfection function when NO domestic hot water contamination is expected in the next 4 hours. Major domestic hot water shut-off occurred recently before the scheduled start of the disinfection function.
About pump down
If the 7H error persists, the unit will stop working and the user interface will display an error code that must be manually reset. Additionally, this error code can be an indication of frost damage to the plate heat exchanger.
To pump down
If the unit detects flow when the pump is not running, an external device may be causing the leak or there may be something wrong with the flow measuring equipment (flow sensor). If the flow sensor detects flow when the pump is not running, the unit will stop operating and the user interface will display error C0‑00.
Dimensions and service space
Dimensions: Outdoor unit
Service space: Outdoor unit
Dimensions and service space: Indoor unit
Center of gravity
Center of gravity: Outdoor unit
Components
Components: Outdoor unit
X1M Terminal (communication and power supply) Y1E Electronic expansion valve (main) Y3E Electronic expansion valve (injection) Y1S Solenoid valve (4-way valve) Y3S Solenoid valve (hot gas flow). X1M Terminal (communication and power supply) Y1E Electronic expansion valve (main) Y3E Electronic expansion valve (injection) Y1S Solenoid valve (4-way valve) Y3S Solenoid valve (hot gas flow).
Components: Indoor unit
Components: Switch box (indoor unit)
Piping diagram
Piping diagram: Outdoor unit
Piping diagram: Indoor unit
Wiring diagram
Wiring diagram: Outdoor unit
5 Refer to the wiring diagram sticker (on the back of the service cover) for information on how to use the BS1~BS4 and DS1 switches. 8 Refer to the service manual for instructions on setting the selector switches (DS1).
Wiring diagram: Indoor unit
UNIT Only for kWh preferential power supply (outdoor) Use normal kWh rate power supply for indoor unit.
Technical specifications
Technical specifications: Outdoor unit
Power supply inlet Outdoor unit only. a) European/International Technical Standard setting the limits for harmonic currents connected by equipment to public low-voltage systems with input current >16 A and ≤75 A per phase. EN/IEC European/International Technical Standard setting the limits for harmonic currents connected by equipment to public low-voltage systems with input current >16 A and ≤75 A per phase.
Technical specifications: Indoor unit
Operation range
Operation range: Heating and cooling
Note: In limited power supply mode, the outdoor unit, booster heater and backup heater can only work separately. ERLQ units include special equipment (insulation, heating sheets,…) to ensure proper operation in areas with low ambient temperatures and high humidity conditions.
Operation range: Domestic hot water
ESP curve
ESP curve: Indoor unit
Adjust the offset to the measured room temperature. Adjust the offset to the measured room temperature. What is the required offset on the measured outside temperature? What is the high electricity price (do not use) What is the average electricity price (do not use) What is the low electricity price (do not use) What type of unit is installed.
