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Installation manual
Daikin Altherma 4 H F
EPVX10S18A▲4V▼
EPVX10S23A▲4V▼
EPVX10S18A▲9W▼
EPVX10S23A▲9W▼
EPVX14S18A▲4V▼
EPVX14S23A▲4V▼
EPVX14S18A▲9W▼
EPVX14S23A▲9W▼
Installation manual
English
▲= 1, 2, 3, ..., 9, A, B, C, ..., Z
Daikin Altherma 4 H F
▼= , , 1, 2, 3, ..., 9
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Table of Contents
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Summary of Contents for Daikin Altherma 4 H F EPVX10S18A 4V Series
- Page 1 Installation manual Daikin Altherma 4 H F EPVX10S18A▲4V▼ EPVX10S23A▲4V▼ EPVX10S18A▲9W▼ EPVX10S23A▲9W▼ EPVX14S18A▲4V▼ EPVX14S23A▲4V▼ EPVX14S18A▲9W▼ EPVX14S23A▲9W▼ Installation manual English ▲= 1, 2, 3, …, 9, A, B, C, …, Z Daikin Altherma 4 H F ▼= , , 1, 2, 3, …, 9...
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Page 2: Table Of Contents
6.4.12 To connect the electricity meters ........ 18 for basic and advanced usage 6.4.13 To connect the safety thermostat (normally closed ▪ Format: Digital files on https://www.daikin.eu. Use the search contact) ............... 18 function to find your model. 6.4.14 Smart Grid..............19 ▪... -
Page 3: Specific Installer Safety Instructions
▪ A subset of the latest technical data is available on the regional Daikin website (publicly accessible). WARNING ▪ The full set of the latest technical data is available on the Daikin Business Portal (authentication required). Electrical wiring MUST be in accordance with the... -
Page 4: About The Box
Sealing rings for shut-off valves (space heating water ≥600 circuit) Sealing rings for field-supplied shut-off valves (domestic hot water circuit) "No glycol" tag (to attach to the field piping near the filling (mm) point) Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 5: Opening And Closing The Unit
Handle with care. ▪ When the user interface panel is removed, make sure it does not drop. 2× 6 Rotate the switch box. 3 Remove the front plate. EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 6: To Close The Indoor Unit
4 Adjust the height of the leveling feet to compensate for floor irregularities. The maximum allowed deviation is 1°. ≤1° 3× NOTICE Do NOT tilt the unit forwards: 1° 1° 0° Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 7: Piping Installation
Deformed pipes can cause the unit to malfunction. setting, the maximum LWT setpoint will also be reduced by Delivered as accessory: 5°C to allow stable control towards the setpoint. EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 8: To Connect The Recirculation Piping
Expansion vessel (recommended) NOTICE Install air purge valves at all local high points. 5.2.2 To connect the recirculation piping Prerequisite: Only required if you need recirculation in your system. Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 9: To Fill The Water Circuit
Optionally, you can install normally closed valves (located indoors construction MUST comply with applicable near the piping entry/exit points). These valves can prevent that all legislation. water from the indoor piping is drained when the freeze protection EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 10: About Electrical Compliance
▪ Maximum running current and/or inrush current of Choose which terminal pins to use for which connected component is >0.3 A component. X42M Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 11: Connections To The Indoor Unit
4 18]. closed Changeover to "6.4.10 To connect the changeover to Smart Meter Contact Smart Grid meter contact. source" [ 4 18]. external heat source external heat Grid" [ 4 19]. "6.4.14 Smart control EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... - Page 12 (field supply, see This is a Field IO input connection. addendum book optional "6.3 Field IO connections" [ 4 10]. equipment) [13] Field IO (External outdoor sensor) [5.22] Ambient sensor Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01...
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Page 13: To Connect The Electrical Wiring To The Indoor Unit
1 2 3 ▪ A5P: Power supply PCB X40M ▪ A6P: Multistep backup heater PCB ▪ A11P: Interface PCB Cables Cable Terminal block a Backup heater power supply X41M EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 14: To Connect The Backup Heater Power Supply
The output of the backup heater depends on the wiring and the selection in the user interface. Make sure that the power supply matches the selection in the user interface. Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... - Page 15 To be used instead of the factory-mounted wire harness (with connector X21YA). F1B Overcurrent fuse (field supply) Q1DI Earth leakage circuit breaker (field supply) Q1L Thermal protector backup heater [5.5] Backup heater Specifications of wiring components EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01...
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Page 16: To Connect The Normally Closed Shut-Off Valve (Inlet Leak Stop)
X42M NOTICE Wiring is different for a NC (normally closed) valve and a NO (normally open) valve. Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 17: To Connect The Domestic Hot Water Pump
Pump runs when there is a request from the main zone. ▪ C/H pump ext. add.: Pump runs when there is a request from the additional zone. ▪ [4.6] Schedule EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 18: To Connect The Changeover To External Heat Source
▪ The safety thermostat is automatically resettable. ▪ The safety thermostat has a maximum temperature variation rate of 2°C/min. ▪ There is a minimum distance of 2 m between the safety thermostat and the 3‑way valve. Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 19: Smart Grid
The related settings in case of Smart Grid meter are as follows: ▪ [13] Field IO (Smart Meter Contact) ▪ [5.25.1] Operation mode (Smart Meter Contact) ▪ [5.30] Smart meter limit EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 20: To Connect The Wlan Cartridge (Delivered As Accessory)
4 13]. electrical wiring to the indoor ▪ Wires: 0.5 mm² ▪ This is a Field IO input connection. See "6.3 Field IO connections" [ 4 10]. Low voltage Smart Grid meter Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 21: Configuration Wizard
Configuration wizard – Overview ▪ Date Depending on your unit type and the selected settings, some steps ▪ Clock format (24 hours or AM/PM) will not be visible. ▪ Time EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 22: [10.4] System 1/4
▪ 2: auto SH reduced/DHW on: When a heat pump failure occurs, space heating is reduced but domestic hot water is still available. Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 23: [10.8] Backup Heater
Target delta T in heating [10.10] Main zone 2/4 Under floor heating 3~10°C Set: Heat pump convector 3~10°C ▪ Heating setpoint mode: Radiator 10~15°C ▪ Fixed ▪ Weather dependent EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 24: [10.11] Main Zone 3/4 (Heating Wd Curve)
Select this value in case of connection to multi-zoning wired Related settings: controls, wired room thermostats (EKRTWA) or wireless room thermostats (EKRTR1, EKRTRB) [10.14] Additional zone 2/4 Set: ▪ Heating setpoint mode: ▪ Fixed ▪ Weather dependent Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 25: [10.18] Configuration Wizard - Dhw 2/2
▪ Hysteresis (select value) To define a weather-dependent curve [10.19] Configuration wizard Define the weather-dependent curve using two setpoints (b, c). Example: The configuration wizard is finished! EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 26: Menu Structure: Overview Installer Settings
[3.10] Bizone kit installed The following table describes how to fine-tune the weather- dependent curve of a zone: [3.11] Undercooling setpoint [3.12] Overheating setpoint [4] Domestic hot water [4.12] Hysteresis Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 27: Commissioning
[5] Settings ▪ In the installation manuals (outdoor unit and indoor unit) or in the installer reference guide [5.1] Forced defrost ▪ In the Daikin e-Care app [5.2] Quiet operation [5.5] Backup heater NOTICE First operation. The first time the unit starts in heating or [5.6] Capacity shortage... -
Page 28: Checklist Before Commissioning
Service Manual ESIE22-02 "Systems using The indoor unit is properly mounted. R290 refrigerant" (available on https://my.daikin.eu). The following field wiring has been carried out according Checklist during commissioning to this document and the applicable legislation: ▪... - Page 29 The compressor of Daikin Altherma 4 heat pumps is shipped in a locked state. During commissioning, it must be unlocked via the Digital Key function on the Daikin e-Care app and on the user interface of the indoor unit. Daikin Altherma 4...
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Page 30: To Open The Stop Valve Of The Outdoor Unit's Refrigerant Vessel
When the commissioning process is completed, the valve. unit is ready to operate. Turn fully open and leave fully Turn fully open and leave fully open. open. Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 31: To Update The User Interface Software
1 Download the latest user interface software (available on https://my.daikin.eu; search via the Software Finder). 2 Put the software on a USB-stick (must be formatted as FAT32). Entering maintenance mode can take up to ~15 minutes. The unit is finishing 3 Power OFF the unit. -
Page 32: To Perform An Operation Test Run
Stop button is NOT available 1 Switch to installer mode. in early versions of the user interface software. Instead, 5678 to stop the function. Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 33: To Perform An Underfloor Heating Screed Dryout
If these limits are reached the actuator test will continue and activate that component again when the limitations allow its operation. ▪ [7.1.1] Booster heater test ▪ [7.1.2] Bivalent test ▪ [7.1.3] Tank Boiler test EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... - Page 34 ▪ The underfloor heating screen is used as home screen until the finish of the program. 4 Tap Stop to stop the underfloor heating screed dryout. Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01...
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Page 35: Hand-Over To The User
▪ Show the user what to do for the maintenance of the unit. my.daikin.eu). Technical data A subset of the latest technical data is available on the regional Daikin website (publicly accessible). The full set of the latest technical data is available on the Daikin Business Portal (authentication required). EPVX10+14S18+23A... -
Page 36: Piping Diagram: Indoor Unit
3-way valve (space heating/domestic hot water) Normally closed shut-off valve (inlet leak stop)(quick coupling – female 1") Thermistors: Inlet water Backup heater – Water OUT R5T, R8T, Tank R11T Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01... -
Page 37: Wiring Diagram: Indoor Unit
# Low voltage Smart Grid contact temperature ST6 (A30P) * Connector On/OFF thermostat (wired) ON/OFF thermostat (wired) X*A, X*Y, X*Y* Connector On/OFF thermostat (wireless) ON/OFF thermostat (wireless) Terminal strip Ext. thermistor External thermistor EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01... - Page 38 Shut-off valve – Normally closed Shut-off valve NO Shut-off valve – Normally open Smart Grid PV power pulse Smart Grid photovoltaic power meter pulse meter Space cooling/heating Space cooling/heating Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01...
- Page 39 3N~, 50 Hz, 400 V AC 1N~, 50 Hz, 230 V AC 1N~, 50 Hz, 230 V AC 3~, 50 Hz, 230 V AC 2~, 50 Hz, 230 V AC 4D152933B (1/2) EPVX10+14S18+23A Installation manual Daikin Altherma 4 H F 4P773386-1B – 2025.01...
- Page 40 2 core 1 mm² Max. load: 0.1 A - 230 V AC Bizone mixing kit A30P X44M -t° %H2O 3 core 0.75 mm² Voltage: 12 V DC 4D152933B (2/2) Installation manual EPVX10+14S18+23A Daikin Altherma 4 H F 4P773386-1B – 2025.01...
- Page 44 4P773386-1 B 00000005 4P773386-1B 2025.01...
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