Page 1 Installer reference guide Daikin Altherma H Hybrid EJHA04AAV3 EHY2KOMB28AA EHY2KOMB32AA...
Page 2: Table Of Contents
DHW pump for instant hot water........................8.4.5 DHW pump for disinfection........................... Setting up the energy metering ............................. 8.5.1 Consumed energy ............................Setting up the power consumption control ........................Installer reference guide EJHA04AAV3 + EHY2KOMB28+32AA Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 3 10.9.9 Fitting a vertical flue system.......................... 125 10.9.10 Plume management kit..........................125 10.9.11 Flues in voids..............................126 10.9.12 Flue gas materials (C63) available on the market..................127 EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 4 16.4.10 Symptom: Boiler/hydrobox combination abnormality (UA-52 error) ............209 16.4.11 Symptom: The burner does NOT ignite......................210 16.4.12 Symptom: The burner ignites noisily......................210 16.4.13 Symptom: The burner resonates........................210 Installer reference guide EJHA04AAV3 + EHY2KOMB28+32AA Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 5 Gas boiler..................................230 18.2.1 Components: Gas boiler ..........................230 18.2.2 Wiring diagram: Gas boiler ..........................231 18.2.3 Technical specifications: Gas boiler....................... 232 19 Glossary 20 Field settings table EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 6: About The Product
Heating and Hotwater Industry Council who manage and promote the Scheme. Visit http://www.centralheating.co.uk for more information. a Gas boiler module INFORMATION This product is intended for domestic use only. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 7: About The Documentation
Format: Paper (in the box of the outdoor unit) ▪ User reference guide: Detailed step-by-step instructions and background information for basic and advanced usage Format: Digital files on https://www.daikin.eu. Use the search function find your model. ▪ Installation manual – Heat pump module: Installation instructions Format: Paper (in the box of the outdoor unit) ▪...
Page 8: Installer Reference Guide At A Glance
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). 2.2 Installer reference guide at a glance...
Page 9 Note: There is also an installer settings table in the user reference guide. This table has to be filled in by the installer and handed over to the user. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 10: General Safety Precautions
WARNING: FLAMMABLE MATERIAL CAUTION Indicates a situation that could result in minor or moderate injury. NOTICE Indicates a situation that could result in equipment or property damage. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 11: For The Installer
WARNING Improper installation or attachment of equipment or accessories could result in electrical shock, short-circuit, leaks, fire or other damage to the equipment. ONLY use accessories, optional equipment and spare parts made or approved by Daikin unless otherwise specified. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).
Page 12: Installation Site
If the wall on which the unit is mounted is flammable, a non-flammable material must be placed between the wall and the unit. Do the same for all locations through which the flue piping passes. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 13: Refrigerant - In Case Of R410A Or R32
Toxic gas might be produced if refrigerant gas comes into contact with fire. WARNING ALWAYS recover the refrigerant. Do NOT release them directly into the environment. Use a vacuum pump to evacuate the installation. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 14 Charge with the cylinder upside down. ▪ Open refrigerant cylinders slowly. ▪ Charge the refrigerant in liquid form. Adding it in gas form may prevent normal operation. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 15: Brine
Using filling water and top-up water which does NOT meet the stated quality requirements can cause a considerably reduced service life of the equipment. The responsibility for this is entirely that of the user. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 16: Electrical
MUST be as such that the current-carrying wires are tautened before the earth wire is in case the power supply is pulled loose from the stress relief. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 17: Gas
The meter or regulator and pipe work to the meter MUST be checked preferably by the gas supplier. This is to ensure that the equipment works good and meets the gas flow and pressure requirements. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 18: Gas Exhaust
BS 5549: 1990 Forced circulation hot water systems. ▪ BS 6700: 2006 + A1: 2009 Design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages - Specification EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 19 Potable water: all seals, joints and compounds (including flux and solder) and components used as part of the secondary domestic water system MUST be approved by WRAS. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 20: Specific Installer Safety Instructions
WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation (for example national gas regulation) and are executed ONLY by authorised persons. EJHA04AAV3 + EHY2KOMB28+32AA...
Page 21 ▪ In order to place the condensate trap, the front cover MUST be pulled forward or removed entirely. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 22 Heart, kidney or liver damage in case of glycol swallowing or skin contact with glycol. ▪ Nausea, sickness and diarrhea in case of glycol inhalation. WARNING Ethylene glycol is toxic. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 23 For installation in damp rooms, a fixed connection is obligatory. When working on the electrical circuit ALWAYS isolate the electric supply. CAUTION Do NOT push or place redundant cable length into the unit. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 24 Make sure that the flue system has a uniform gradient back to the boiler. WARNING Flue materials of different markings must NOT be combined. The boiler must NOT be installed to a pressurized common flue system (more than one boiler). EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 25 ALWAYS comply with local and national regulations. The gas valve is sealed. In Belgium, any modifications to the gas valve MUST be performed by a certified representative of the manufacturer. For more information, contact your dealer. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 26 If necessary, place a new seal and check the correct positioning. ▪ If retarders are NOT or incorrectly fitted, it may lead to serious damage. Troubleshooting (see "16 Troubleshooting" [ 205]) DANGER: RISK OF ELECTROCUTION EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 27 ▪ Use a separate recovery system so that the unit's compressor does NOT have to operate. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 28: About The Box
To avoid injury, do NOT touch the air inlet or aluminium fins of the unit. NOTICE To prevent damage to the supporting feet, do NOT tilt the unit sideways in any way: Carry the unit slowly as shown: EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 29: To Remove The Accessories From The Outdoor Unit
Cable gland j Drain plug 5.3 Gas boiler 5.3.1 To unpack the gas boiler Before unpacking, move the gas boiler as close as possible to its installation position. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 30 About the box WARNING Tear apart and throw away plastic packaging bags so that nobody, especially children, can play with them. Possible consequence: suffocation. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 31: To Remove The Accessories From The Gas Boiler
5.3.2 To remove the accessories from the gas boiler 1 Remove the accessories. a Mounting strip b Condensate trap c Installation and operation manual d Current loop module, cable and installation manual EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 32: About The System
Using this gas boiler, you can produce domestic hot water as follows: ▪ Domestic hot water by tank ▪ Instant domestic hot water by gas boiler EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 33: Third-Party Gas Boiler
Using this gas boiler, you can only produce domestic hot water as instant domestic hot water by gas boiler. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 34 To prevent freeze-up of the water piping, the third-party gas boiler must have a fixed setpoint ≥55°C, or a weather-dependent setpoint ≥T (°C) –30 –25 –20 –15 –10 –5 (°C) Outdoor temperature Minimum weather-dependent setpoint for third-party gas boiler EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 35: Freeze Protection
If you install the bottom plate heater, you may lower the operation range of the heat pump to Ta≥–14°C using field setting [8-0E]=–14°C. ▪ If you do not install the bottom plate heater, keep [8-0E]=–5°C. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 36: About The Units And Options
Example: EJ H A 04 AA V3 Code Explanation Hybrid monobloc outdoor pair heating only Low water temperature – ambient zone 3 (see operation range) Refrigerant R32 Capacity class Model series Power supply EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 37: Identification Label: Gas Boiler
Gas group and gas connection pressure as set at the factory (EN 437) G25-25 mbar C13(x), …., C93(x) Approved flue gas category (EN 15502) Tmax Maximum flow temperature in °C IPX4D Electrical protection class EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 38: Combining Units And Options
LAN adapter for smartphone control + Smart Grid applications (BRP069A61) You can install this LAN adapter to: ▪ Control the system via a smartphone app. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 39 Only applicable in case of EHY2KOMB28+32AA gas boiler. For providing domestic hot water, a domestic hot water tank can be connected to the gas boiler. The following domestic hot water tanks are available: EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 40 The PC cable makes a connection between the switch box of the outdoor unit and a PC. It gives the possibility to update the software of the outdoor unit. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 41: Possible Options For The Gas Boiler
To fill and top up the space heating system. EKFL1A Solar water heater connection set To combine the boiler with a solar heated tank. EKSH1A Dongle set EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 42 Elbow PP/GLV 60/100 30° EKFGP4661 Elbow PP/GLV 60/100 45° EKFGP4660 Elbow PP/GLV 60/100 90° EKFGP4667 Meas. tee with inspection panel PP/ GLV 60/100 EKFGP4631 Wall bracket Ø100 EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 43 Roof Terminal PP/GLV 80/125 AR300 RAL 9011 EKFGT6300 Weather slate steep Pb/GLV 80/125 18°-22° EKFGT6301 Weather slate steep Pb/GLV 80/125 23°-27° EKFGP7909 Weather slate steep PF 80/125 25°-45° RAL 9011 EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 44 Chimney top PP 100 with included flue pipe EKFGP6316 Adapter flex-fixed PP 100 EKFGP6337 Support bracket top inox Ø100 EKFGP6346 Extension flex PP 100 L=10 m EKFGP6349 Extension flex PP 100 L=15 m EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 45 Chimney connection 60/100 EKFGP2520 Flex kit PP Ø80 EKFGP4828 Chimney connection 80/125 EKFGP6340 Extension Flex PP 80 L=10 m EKFGP6344 Extension Flex PP 80 L=15 m EKFGP6341 Extension Flex PP 80 L=25 m EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 46 For the installation of the flue and air supply duct material, see the manual included with the materials. Contact the manufacturer of the relevant flue and air supply duct materials for extensive technical information and specific assembly instructions. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 47: Application Guidelines
▪ Which heat emitter types are used in each room and what is their design leaving water temperature? Once the space heating requirements are clear, Daikin recommends to follow the setup guidelines below. INFORMATION In case an external room thermostat is used and room frost protection needs to be guaranteed in all conditions, then you have to set auto emergency [A.6.C] to 1.
Page 48: Single Room
For your daily needs, you can use preset values and schedules. To deviate from your daily needs, you can temporarily overrule the preset values and schedules, or use the holiday mode. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 49 OFF condition. ▪ Code: [C-05] Benefits ▪ Wireless. The Daikin external room thermostat is available in a wireless version. ▪ Efficiency. Although the external room thermostat only sends ON/OFF signals, it is specifically designed for the heat pump system. Heat pump convectors...
Page 50 ▪ The heat pump convectors are directly connected to the gas boiler. ▪ The desired room temperature is set via the remote controller of the heat pump convectors. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 51: Multiple Rooms - One Lwt Zone
The underfloor heating of the main room is directly connected to the gas boiler. ▪ The room temperature of the main room is controlled by the user interface used as thermostat. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 52 Configuration Setting Value Unit temperature control: 0 (LWT control): Unit operation is decided based on the leaving water ▪ #: [A.2.1.7] temperature. ▪ Code: [C-07] EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 53 Compared with heat pump convectors for one room: ▪ Comfort. You can set the desired room temperature, including schedules, for each room via the remote controller of the heat pump convectors. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 54: Setting Up The Space Heating System - In Case Of Third-Party Gas Boiler
How many rooms are heated by the heat pump system? ▪ Which heat emitter types are used in each room and what is their design leaving water temperature? EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 55: Single Room
Application guidelines Once the space heating requirements are clear, Daikin recommends to follow the setup guidelines below. INFORMATION In case an external room thermostat is used and room frost protection needs to be guaranteed in all conditions, then you have to set auto emergency [A.6.C] to 1.
Page 56: Multiple Rooms - One Lwt Zone
▪ #: [A.2.1.7] temperature of the user interface. ▪ Code: [C-07] Benefits ▪ Cost effective. You do NOT need an additional external room thermostat. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 57: Setting Up The Domestic Hot Water Tank
Only applicable in case of EHY2KOMB28+32AA gas boiler. 8.4.1 System layout – Standalone DHW tank See "Dedicated gas boiler + Domestic hot water via tank" in "6.1.1 Dedicated gas boiler" [ 32]. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 58: Selecting The Volume And Desired Temperature For The Dhw Tank
▪ =15°C Then V =307 l DHW consumption (equivalent hot water volume at 40°C) Required DHW tank volume if only heated once DHW tank temperature Cold water temperature EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 59: Setup And Configuration - Dhw Tank
Connecting the water piping of the standalone DHW tank to the gas boiler, see the installation manual of the DHW tank, the addendum book for optional equipment, and "To connect the electrical wiring to the gas boiler" [ 108]. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 60: Dhw Pump For Instant Hot Water
If applicable legislation requires disinfection of the water piping until the tapping point, you can connect a DHW pump and heater element (if needed) as shown above. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 61: Setting Up The Energy Metering
The power limitation level can be expressed as: Maximum running current (in A) Maximum power input (in kW) ▪ The power limitation level can be activated permanently, but not by digital inputs. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 62: Permanent Power Limitation
When the power saving functionality of the outdoor unit is active (see "11 Configuration" [ 136]), the outdoor unit is turned down to reduce standby energy losses. As a result, the outdoor ambient temperature is NOT read out. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 63 The external outdoor ambient sensor data (either averaged or instantaneous) is used in the weather-dependent control curves. To protect the outdoor unit, the internal sensor of the outdoor unit is always used. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 64: Preparation
>250 >250 >250 (mm) a Air outlet b Air inlet NOTICE The height of the wall on the outlet side of the outdoor unit MUST be ≤1200 mm. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 65 This is to prevent corrosion caused by high levels of salt in the air, which might shorten the life of the unit. Install the outdoor unit away from direct sea winds. Example: Behind the building. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 66 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). EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 67: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation (for example national gas regulation) and are executed ONLY by authorised persons. 9.2.2 Additional installation site requirements of the outdoor unit in cold climates Protect the outdoor unit against direct snowfall and take care that the outdoor unit is NEVER snowed up.
Page 68 Solutions Navigator which reached https:// professional.standbyme.daikin.eu. Please contact your dealer if you have no access to Heating Solutions Navigator. This recommendation ensures good operation of the unit, however, local regulations may differ and shall be followed. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D –...
Page 69 Start-up with glycol at – 44 m 30 m 15°C → 7.0 l/min ΔT 5°C with glycol at 20°C 36 m 14 m → 12.8 l/min ΔT 8°C with glycol at 20°C 170 m 120 m → 8.0 l/min EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 70: Water Circuit Requirements
Water flow. See "9.3.4 To check the water volume and flow rate" [ 73]. Minimum required flow rate 7 l/min (a) Below this value, no stable operation can be guaranteed. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 71 Domestic hot water tank – Capacity. To avoid stagnation of water, it is important that the storage capacity of the domestic hot water tank meets the daily consumption of domestic hot water. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 72: Formula To Calculate The Expansion Vessel Pre-Pressure
The pre-pressure (Pg) of the vessel depends on the installation height difference (H). For more information on the formula, see the manual of the third-party expansion vessel. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 73: To Check The Water Volume And Flow Rate
Changing the pre-pressure of the expansion vessel should be done by releasing or increasing nitrogen pressure through the Schrader valve of the expansion vessel. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 74: Preparing Electrical Wiring
Normal power supply b Hydro part of the outdoor unit c Refrigerant part of the outdoor unit d Gas boiler 1 Power supply for outdoor unit EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 75: Overview Of Electrical Connections For External And Internal Actuators
(c) Part of optional equipment (d) Minimum cable section 0.75 mm². (e) Cable section 0.75 mm² till 1.25 mm²; maximum length: 200 m. These wires MUST be sheathed. Recommended strip length: 6 mm. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 76 The following figure is an example and may NOT completely match your system layout. a Outdoor unit b Third-party gas boiler c Power supply for gas boiler Connections to outdoor unit: Item Description Wires Maximum running current Power supply EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 77 Recommended strip length: 6 mm. (g) Field supplied NOTICE More technical specifications of the different connections are indicated on the inside of the outdoor unit. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 78: Installation
DANGER: RISK OF ELECTROCUTION Do NOT leave the unit unattended when the service cover is removed. 10.2.2 To open the outdoor unit DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 79: To Open The Gas Boiler
1 Open the gas boiler, see "10.2.3 To open the gas boiler" [ 79]. 2 Pull the boiler controller unit forwards. The boiler controller will tip downwards to provide access. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 80: Mounting The Outdoor Unit
Additionally, make sure the unit is positioned at least 100 mm above the maximum expected level of snow. INFORMATION The maximum height of the upper protruding part of the bolts is 15 mm. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 81 Installation Anchor points 4× M8/M10 (mm) Option 1: On mounting feet "flexi-foot with strut" (mm) a Maximum snowfall height Option 2: On plastic mounting feet EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 82: To Install The Outdoor Unit
Option 3: On a pedestal (mm) Option 4: On brackets to the wall 4× (mm) a Anti-vibration rubber (field supply) 10.3.4 To install the outdoor unit 4× M8/M10 EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 83: To Provide Drainage
3 Insert a rubber sheet between the cables and the outdoor unit to prevent the cables from scratching the paint (field supply). 4 Attach the ends of the cables. 5 Tighten the cables. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 84: Mounting The Gas Boiler
4 Tilt the top of the unit at the position of the wall bracket and slide the boiler downwards to fix the boiler bracket onto the wall bracket. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 85: To Install The Condensate Trap
4 Connect the flexible tube (where applicable with the overflow pipe from the pressure relief valve) to the drain via an open connection. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 86: Condensate Pipe Work
A suitable permanent connection to the foul waste pipe should be used. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 87 A suitable permanent connection to the foul waste pipe should be used. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 88: External Connections
Protecting the water circuit against freezing. Filling the space heating circuit. Filling the domestic water circuit of the gas boiler. Filling the domestic hot water tank (if applicable). Insulating the water piping. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 89: Precautions When Connecting The Water Piping
...) instantly if this can result in an immediate short circuit of the water flow between the outlet and the inlet of the unit (for example via a bypass valve). This may trigger an error. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 90 If this is NOT working correctly, overpressure will deform the tank and water leakage may occur. To confirm good operation, regular maintenance is required. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 91: Connecting The Water Piping Of The Gas Boiler
10.6.4 Connecting the water piping of the gas boiler To connect the water piping for domestic hot water (not applicable for Switzerland) 1 Flush the installation thoroughly to clean. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 92 1 Rinse the space heating installation carefully. 2 Connect the space heating outlet (a) and space heating inlet (b) to their connections as indicated in the following illustration: EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 93: To Protect The Water Circuit Against Freezing
Heart, kidney or liver damage in case of glycol swallowing or skin contact with glycol. ▪ Nausea, sickness and diarrhea in case of glycol inhalation. Freeze protection by glycol EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 94 You can use either propylene glycol domestic hot water tank ethylene glycol Propylene glycol, including the necessary inhibitors, classified as Category III according to EN1717. WARNING Ethylene glycol is toxic. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 95 Vacuum breaker (head-up for air supply) These parts are necessary to protect the piping inside the outdoor unit against freezing. Note: These parts do NOT protect the field piping against freezing. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 96 Vacuum breaker (head-up for air supply) 1 Open the top plate. 2 Open the front plate. 3 Open the rear plate. 4 Connect a+b1 as follows: EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 97 Head-up for air supply. Possibility 1 With option EKBALLV1 (shut-off valves with integrated connection for the vacuum breaker). For installation instructions, see the installation manual of the shut-off valves. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 98: To Fill The Space Heating Circuit
10 Check the pressure again. If it is too low, repeat from step 5. 11 Disconnect the water supply hose from the fill/drain point. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 99 11 Check the pressure again. If it is too low, repeat from step 5. 12 Disconnect the water supply hose from the fill/drain point. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 100: To Fill The Domestic Water Circuit Of The Gas Boiler
Connecting the LAN adapter (if applicable)(see the installation manual of the LAN adapter and addendum book for optional equipment). EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 101: Precautions When Connecting The Electrical Wiring
MUST NOT be supplied through an external switching device, such as a timer, or connected to a circuit that is regularly turned ON and OFF by the utility. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 102: Guidelines When Connecting The Electrical Wiring
2 Install a round crimp-style terminal on the end of the wire. Place the round crimp-style terminal on the wire up to the covered part and fasten the terminal with the appropriate tool. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 103: In Case Of Dedicated Gas Boiler
78]. 2 Strip insulation (20 mm) from the wires. a Strip wire end to this point b An excessive strip length may cause electrical shock or leakage EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 104 Connections in case of dedicated gas boiler Routing Possible cables (depends on the installed options) Main power supply Main power supply (high voltage) User interface (mandatory option) User interface (low voltage) EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 105 1N~ 50 Hz 220-240 V 1× a Recommended field fuse: 20 A Q1DI Earth leakage circuit breaker 2 Fix the cable with cable ties to the cable tie mountings. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 106 Reinstall the faceplate onto the wallplate. Be careful NOT to pinch the wiring when attaching the frontplate to the unit. 4A From the rear 4B From the left 1× 1× EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 107 2 Fix the cable with cable ties to the cable tie mountings. To connect the domestic hot water pump 1 Connect the domestic hot water pump cable to the appropriate terminals as shown in the illustration below. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 108 To connect the electrical wiring to the gas boiler 1 Open the gas boiler. 2 Open the switch box cover of the gas boiler. 3 Enter the wiring through the bottom of the unit. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 109: In Case Of Third-Party Gas Boiler
10.7.5 In case of third-party gas boiler To connect the electrical wiring to the outdoor unit NOTICE The distance between the high voltage and low voltage cables should be at least 50 mm. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 110 5 Inside the unit, route the wiring to the switch box as follows: 3× a~d See below 6 Inside the switch box, connect the wires to the appropriate terminals. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 111 1N~ 50 Hz 220-240 V 1× a Recommended field fuse: 20 A Q1DI Earth leakage circuit breaker 2 Fix the cable with cable ties to the cable tie mountings. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 112 Reinstall the faceplate onto the wallplate. Be careful NOT to pinch the wiring when attaching the frontplate to the unit. 4A From the rear 4B From the left 1× 1× EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 113 EKADDONJH and EKADDONJH2 (= connection kit for third-party gas boiler). This includes connecting the external pump to the outdoor unit. For installation instructions, see the installation manual of the connection kit. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 114: Connecting The Gas Piping
Carefully follow the instructions as described in the adapter set. The concentric adapter piece is equipped with a measuring point for the gas exhaust and one for the air intake. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 115: To Change The Gas Boiler To 80/125 Concentric Connection
2× Ø80 by an adapter set. 1 Remove the concentric pipe from the air supply and combustion gas pipe at the top of the gas boiler by turning counterclockwise. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 116: Calculate The Total Piping Length
The total permitted pipe length of the air supply and the combustion gas flue is indicated for each appliance category. Equivalent length for concentric installation (60/100) Length (m) Bend 90° Bend 45° EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 117 For a dual pipe connection, all defined lengths assume a diameter of 80 mm. Sample calculation for dual pipe application Pipe Pipe length Total pipe length Flue pipe L1+L2+L3+(2×2) m 13 m Air supply L4+L5+L6+(2×2) m 12 m EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 118: Appliance Categories And Pipe Lengths
Combustion air is drawn into the appliance from the room by means of a concentric duct, which encloses the flue. The air enters through defined orifices situated in the surface of the duct. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 119 Best recommended position of the bracket is just before the joint. INFORMATION Flexible flue gas lines may NOT be used in horizontal connection sections. 60/100 60/100 Twin-80 Twin-80 L1 (m) L1 (m) L1 (m) L1 (m) EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 120 L2. For example: if the length of L1 is 2 m, L2 can maximally be 8 m long. L2=–1.8×L1+11.8 Multi-boiler installation INFORMATION All piping lengths in the tables below are maximum equivalent piping lengths. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 121 : See the table below for the minimum diameters of the combined gas exhaust/air intake system. For EHY2KOMB28AA: Number of Concentric Dual pipe units Gas exhaust Air intake Gas exhaust Air intake EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 122 Dual pipe units Gas exhaust Air intake Gas exhaust Air intake Special remark regarding C : The minimum inner dimensions of the chimney have to be 200×200 mm. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 123: Applicable Materials
Especially for UK: Only use flue products approved by the boiler manufacturer, which can be bought from the supplier of your boiler. "7.3 Combining units and options" [ 38]. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 124 If this occurs, it is highly possible the flue is fitted with a negative pressure area and therefore a plume management kit MUST be fitted. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 125: Insulation Of The Gas Exhaust And Air Intake
(excluding the initial boiler connection). CAUTION Read the installation manuals of the field supplied parts. 10.9.10 Plume management kit See the local and national regulations. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 126: Flues In Voids
The term void includes ceiling voids, floor voids, purpose built enclosures, service risers, roof spaces or any other enclosure that will restrict access to inspect the flue. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 127: Flue Gas Materials (C63) Available On The Market
Flue pipe Air inlet Flue pipe Air inlet Ø80 Ø80 Ø125 Ø60 Ø100 (+0.3 / –0.7) (+0.3 / –0.7) (+2 / –0) (+0.3 / –0.7) (+2 / –0) EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 128: About Securing The Flue System
Do NOT mix flue parts or clamps of different suppliers. 10.9.14 Placing brackets on the flue gas piping The piping MUST be pushed downwards by positioning the bracket correctly. a Bracket EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 129 Position the first clamp at a maximum of 500 mm from the gasboiler. Make sure that the material of the bracket matches the material of the piping (air/ flue gas): EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 130 If extension tubes before and after the first bend are shorter than 0.25 m, the second element of the sleeve after the first bend must be fitted with a fixing bracket. element after the 1 bend EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 131 Place a fixing bracket between the fixing brackets in case of the metal piping. In case of vertical flue gas piping If the distance between the fixing brackets on sleeves is greater than 2 meters: EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 132 Position a securing bracket on the last element before the wall. ▪ When this last element is an elbow, the bracket may also be placed on the previous bracket. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 133: Finishing The Outdoor Unit Installation
10.11 Finishing the gas boiler installation 10.11.1 To perform an air purge on the gas supply 1 Turn once the screw counterclockwise. Result: Gas supply will purge air. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 134: To Close The Gas Boiler
2 Tilt the bottom side of the front panel towards the gas boiler. 3 Screw both screws of the cover. 4 Close the display cover. 10.11.3 To install the gas boiler cover plate EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 135 Installation The boiler cover plate is an optional product. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 136: Configuration
Accessing settings via the code in the overview Code settings. For example: [C-07] See also: ▪ "To access the installer settings" [ 137] ▪ "11.1.5 Menu structure: Overview installer settings" [ 170] EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 137 An additional 0-digit is added to the first part of the setting when you access the codes in the overview settings. Example: [1‑01]: "1" will result in "01". EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 138 1 At power ON and as long as the system layout was not confirmed yet, select your preferred language. Language Select the desired language Confirm Adjust EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 139: Basic Configuration
Quick wizard: Standard Space heating settings The system can heat up a space. Depending on the type of application, the space heating settings must be made accordingly. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 140: Pump Operation Mode
Remark: continuous pump operation requires more energy than sample or request pump operation. a: Space heating control (user interface) b: OFF c: ON d: Pump operation continued >> EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 141 Glycol present: ▪ 0 (No): No glycol was added to the water circuit. ▪ 1 (Yes): Glycol was added to the water circuit to protect it against freezing. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 142: Quick Wizard: Options
Domestic hot water tank: ▪ 0 (Type 1): EKHWS*D* or third-party tank (see below). ▪ 4 (Type 5). EKHWP. ▪ 6 (Type 7) Third-party tank. Range: 0~6 EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 143 Domestic hot water pump g Heater element h Non-return valve INFORMATION The correct domestic hot water default settings become only applicable when domestic hot water operation is activated ([E‑05]=1). EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 144 Set to Ecological, the heat source will be selected based on ecological parameters, resulting in a minimisation of primary energy consumption. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 145 10°C. See the user reference guide and/or operation manual for more details about this function. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 146 [7.7.1.1] [1‑00] Set weather-dependent heating: [1‑01] [1‑02] [1-02] [1‑03] [1-03] [1-00] [1-01] ▪ : Target leaving water temperature (main) ▪ : Outdoor temperature continued >> EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 147 If... Then the main pump runs... Space heating is done by... And... Outdoor unit only [C-0B]=1 According to ΔT control (see below). [C-0B]=0 At maximum pump speed. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 148 Leaving water temperature maximum modulation: Range: 0°C~10°C Requires modulation to be enabled. This is the value by which the desired leaving water temperature is increased or lowered. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 149 (set by the user interface) for under floor loops is 35°C. In such case, the unit will be controlled to realize a temperature difference of 5°C which means EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 150 During disinfection of the domestic hot water tank, the DHW temperature can exceed this maximum temperature. INFORMATION Limit the maximum hot water temperature according to the applicable legislation. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 151: Advanced Configuration/Optimisation
Preset leaving water temperature for the main leaving water temperature zone in case of NOT weather dependent [7.4.2.1] [8-09] Comfort (heating) [9‑01]°C~[9‑00]°C [7.4.2.2] [8-0A] Eco (heating) [9‑01]°C~[9‑00]°C EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 152 This function defines how much the water temperature may rise above the desired leaving water temperature before the compressor stops. The compressor will startup again when the leaving water temperature drops below the desired leaving water temperature. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 153 Temperature ranges (room temperature) ONLY applicable in room thermostat control. In order to save energy by preventing overheating the room, you can limit the range of the room temperature. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 154 Set the room antifrost temperature ([2‑05]). External room thermostat control Allow for the external room thermostat ([C‑07]=1) to take care of room frost protection: ▪ Turn leaving water temperature home page. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 155 ON on the user interface, and the auto emergency setting ([A.6.C]) is set to "1". Additionally, limited frost protection by the unit is possible: EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 156 Additionally, a storage stop can be programmed. This feature puts a stop to tank heating even if the setpoint has NOT been reached. Only program a storage stop when tank heating is absolutely undesirable. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 157 (according to the weather-dependent curve). During weather-dependent operation, the end-user cannot adjust the desired tank temperature on the user interface. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 158 The disinfection function disinfects the domestic hot water tank by periodically heating the domestic hot water to a specific temperature. CAUTION The disinfection function settings MUST be configured by the installer according to the applicable legislation. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 159 This maximum allowable hot water temperature shall be selected according to the applicable legislation. CAUTION Make sure that the disinfection function start time [A.4.4.3] with defined duration [A.4.4.5] is NOT interrupted by possible domestic hot water demand. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 160 However, the disinfection function will be activated ONLY if the user confirms emergency operation via the user interface. Bivalent Only applicable in case of third-party gas boiler. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 161 COP = (Electricity price / gas price) × boiler efficiency ▪ Electricity price: 20 c€/kWh ▪ Gas price: 6 c€/kWh ▪ Boiler efficiency: 0.9 Then: COP = (20/6)×0.9 = 3 EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 162 ▪ [F-03] Bottom plate heater hysteresis: defines the temperature difference between bottom plate heater ON temperature and the bottom plate heater OFF temperature. Bottom plate heater EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 163 Code Description [A.5.2.3] [8-0E] Boiler only ambient temp When the ambient temperature is lower than this temperature, the heat pump is NOT allowed to work. Range: –14°C~25°C EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 164 (because the heat exchanger coil is not operational) with a warmer top layer. Range: 0°C~20°C EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 165 2: 24 hours ▪ 3: 48 hours ▪ 4: 72 hours Offset temperature external outdoor ambient sensor Only applicable in case of an external outdoor ambient sensor is installed and configured. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 166 Pump speed limitation [9‑0D] defines the maximum pump speed. In normal conditions, the default setting should NOT be modified. The pump speed limitation will also be overruled when delta T is abnormal. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 167 The maximum values depend on the unit type: [9-0D]=0 [9-0D]=1/5 a (kPa) a (kPa) b (l/min) b (l/min) [9-0D]=2/6 [9-0D]=3/7 a (kPa) a (kPa) b (l/min) b (l/min) EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 168 Configuration [9-0D]=4/8 a (kPa) b (l/min) a External static pressure b Water flow rate EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 169: Menu Structure: Overview User Settings
Set weather-dependent heating (*) Only applicable in case of EHY2KOMB28+32AA gas boiler INFORMATION Depending on the selected installer settings and unit type, settings will be visible/ invisible. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 170: Menu Structure: Overview Installer Settings
Actuator test run (*) Only applicable in case of EHY2KOMB28+32AA gas boiler. INFORMATION Depending on the selected installer settings and unit type, settings will be visible/ invisible. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 171: Gas Boiler
If there is no need for immediate hot water delivery, the domestic hot water comfort function can be turned off. To reset the gas boiler INFORMATION Resetting is only possible when an error occurs. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 172 INFORMATION ▪ Press the button to exit the menu without storing the parameter changes. ▪ Press the button to load the default settings of the gas boiler. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 173 Use the user interface instead. Maximum supply temperature 30°C~90°C 90°C Do NOT modify this setting on of the heat curve the boiler. Use the user interface instead. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 174: Parameter Setting
Minimal domestic hot water 23%~50% Adjustment range 23~50% (40=propane). (not applicable for It is recommended not to Switzerland) modify this setting in case of natural gas. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 175 Number of eco days. Anti-cycling period during 0 min~15 min 5 min Minimal switch-off time in space heating operation space heating operation. It is recommended not to modify this setting. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 176 Minimum required flow rate values for corresponding set powers are given in the table below. Minimum flow rate (l/ Set power (kW) min) 5.4 kW 8.5 kW 17.8 kW 12.5 26.2 kW EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 177 13 Put a sticker indicating the new gas type next to the gas valve, over the existing one. 14 Put the front panel back in its place. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 178 2 Switch off the gas boiler with the button. appears on the service display. 3 Remove the front panel from the gas boiler. 4 Remove the sampling point (a) and insert a suitable flue gas analyser probe. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 179 10 Allow readings to stabilise. Wait for at least 3 minutes and compare the CO percentage with the values in the table below. value at maximum power Natural gas Natural gas Propane P G31 Maximum value EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 180 (%) at minimum power power (front cover opened) Natural gas 2H/2E Propane 3P (G31, (G20, 20 mbar) 30/50/37 mbar) 10.8 — 10.5±0.1 10.6 10.3±0.1 10.4 10.1±0.1 10.2 9.9±0.1 10.0 9.8±0.1 9.6±0.1 EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 181 CO percentage at maximum power, contact your local dealer. 6 Press and simultaneously to exit the test program. 7 Put the front panel back in its place. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 182: Operation
INFORMATION For EHY2KOMB28+32AA, prolonged instant domestic hot water operation at low outdoor temperatures might be temporarily interrupted to protect the outdoor unit and water piping from freezing. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 183: Flow Resistance Graph For Appliance Domestic Hot Water Circuit
When the temperature drops too fast and the anti-cycle time has passed, the shutdown will be cancelled. Self-test The sensors check the boiler controller. During the check-up, the boiler controller does NOT perform any other tasks. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 184 The space heating supply temperature must be set on the user interface of the hybrid module. See the user reference guide for more details. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 185: Commissioning
Service Interval Record and left with the householder. 13.1 Overview: Commissioning This chapter describes what you have to do and know to commission the system after it is installed and configured. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 186: Precautions When Commissioning
▪ Between the gas boiler and the local supply panel ▪ Between the outdoor unit and the gas boiler (bivalent signal) ▪ Between the outdoor unit and the external pump EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 187: Checklist During Commissioning
To perform an actuator test run. To perform (start) an underfloor screed dryout (if necessary). To perform a gas pressure test. To perform a test run on the gas boiler. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 188: Air Purge Function
> Commissioning > Air purge > Start air purge and press to start the air purge function. Result: The manual air purge starts and the following screen appears. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 189: Air Purge
"To set the user permission level Installer" [ 137]. 2 Go to [A.7.1]: > Installer settings > Commissioning > Test run. 3 Select a test and press . Example: Heating. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 190: To Perform An Actuator Test Run
Bottom plate heater test ▪ Bivalent signal test (in case of third-party gas boiler) ▪ Circulation pump test ▪ Gas boiler test (in case of EHY2KOMB28+32AA gas boiler) EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 191: Underfloor Heating Screed Dryout
The installer can program up to 20 steps. For each step he needs to enter: 1 the duration in hours, up to 72 hours, 2 the desired leaving water temperature, up to 55°C. Example: EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 192 Result: The underfloor heating screed dryout starts and following screen will be shown. It stops automatically when done. To stop it manually, press , select OK and press EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 193: To Perform A Gas Pressure Test
6 Modify and restart the execution of the program. 13.4.5 To perform a gas pressure test 1 Connect a suitable gauge on the gas valve. Static pressure MUST be 20 mbar. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 194: To Perform A Test Run On The Gas Boiler
Burner ON at minimum power Burner ON, maximum and (1×) space heating power setting Burner ON, maximum and (2×) domestic hot water setting Stop test program Actual situation EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 195 Commissioning NOTICE If an 81‑04 error occurs, then do NOT perform a test run on the gas boiler. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 196: Hand-Over To The User
Show the user what to do for the maintenance of the unit. ▪ Explain about energy saving tips to the user as described in the operation manual. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 197: Maintenance And Service
15.3.2 Checklist for yearly maintenance of the outdoor unit Check the following at least once a year: ▪ Heat exchanger ▪ Water pressure ▪ Water filter ▪ Water pressure relief valve EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 198 Water coming out of the valve may be very hot. ▪ Check if nothing blocks the water in the valve or in between piping. The water flow coming from the relief valve must be high enough. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 199: Gas Boiler
79]. 15.4.2 To disassemble the gas boiler 1 Turn off the appliance. 2 Turn off the main power supply of the appliance. 3 Close the gas tap. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 200 8 Pull the bottom of the pipe forwards and remove the pipe downwards by turning the pipe alternately clockwise and counterclockwise. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 201 9 Lift the condensate drain pan on the left-hand side from the connection to the condensate trap. 10 Turn it to the right with the condensate trap connection over the edge of the base tray. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 202: To Clean The Inside Of The Gas Boiler
1 Clean the heat exchanger from top to bottom with a plastic brush or compressed air. 2 Clean the underside of the heat exchanger. 3 Clean the condensate drain pan with water. 4 Clean the condensate trap with water. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 203: To Assemble The Gas Boiler
Make sure in doing this that the back of the condensate drain pan comes to rest on the lug of the back of the base tray. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 204 17 Fit the casing, tighten the 2 screws on the left and right side of the display. 18 Close the display cover. 19 Check the heating and hot water supply. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 205: Troubleshooting
16.3 General guidelines Before starting the troubleshooting procedure, carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 206: Solving Problems Based On Symptoms
Make sure that the water volume in the too low installation is above the minimum required value (see "9.3.4 To check the water volume and flow rate" [ 73]). EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 207: Symptom: The Compressor Does Not Start (Space Heating Or Domestic Water Heating)
(see "9.3.4 To check the water volume and flow rate" [ 73] and "9.3.5 Changing the pre-pressure of the expansion vessel" [ 73]). EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 208: Symptom: The Water Pressure Relief Valve Leaks
[A.8] > Installer settings > Overview settings [5‑01] There is air in the system. Purge air manually or automatically. See the air purge function in the "Commissioning" chapter. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 209: Symptom: The Pressure At The Tapping Point Is Temporarily Unusually High
Corrective action Boiler/hydrobox mismatch Make sure that the . setting is set to 0. Incompatibility of software Update the boiler and hydrobox software to the latest version. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 210: Symptom: The Burner Does Not Ignite
Gas supply pressure too low. The house pressure switch may be faulty. Contact the gas company. Recirculation of combustion gasses. Check the flue gas and the air supply. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 211: Symptom: No Space Heating By The Gas Boiler
16.4.17 Symptom: No domestic hot water Not applicable for Switzerland Possible causes Corrective action The burner is NOT firing on domestic Replace S3. hot water: S3 faulty. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 212: Symptom: Hot Water Does Not Reach The Temperature (No Tank Installed)
Open the outdoor unit (see "10.2.2 To open the outdoor unit" [ 78]). The following illustration indicates the location of the outdoor unit LED on the PCB: EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 213: To Diagnose Faults
INFORMATION See the service manual for: ▪ The complete list of error codes ▪ A more detailed troubleshooting guideline for each error EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 214: Error Codes: Overview
OU: Voltage/current sensor problem. Please contact your dealer. OU: Malfunction of high pressure switch (HPS) Please contact your dealer. OU: Malfunction of position detection sensor. Please contact your dealer. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 215 Please contact your dealer. OU: Malfunction of inverter radiating fin temperature rise. Please contact your dealer. OU: Inverter instantaneous overcurrent (DC). Please contact your dealer. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 216 Please contact your dealer. Heat exchanger frozen. Heat exchanger frozen. Heat exchanger frozen. Abnormal increase outlet water temperature (DHW). Abnormal increase outlet water temperature. Overheating water circuit (thermostat). EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 217 Tank preheating External temperature sensor problem. Please contact your dealer. Tank temperature sensor problem. Please contact your dealer. Boiler abnormality detection Check boiler Refer to boiler manual EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 218 Error codes of the gas boiler The controller on the gas boiler detects faults and indicates them on the display by error codes. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 219 Fan catching on casing ▪ Wiring between fan and casing ▪ Check wiring for poor wire contact ▪ Replace fan 29, 30 Gas valve relay fault Replace boiler controller EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 220: Disposal
4 Check on the manifold if the vacuum is reached. 5 After ±5 minutes, close the gas stop valve, and stop the pump down operation by pressing on the user interface. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 221 Disposal a Liquid stop valve b Closing direction c Hexagonal wrench d Valve cap e Gas stop valve EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 222: Technical Data
Technical data 18 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). 18.1 Outdoor unit 18.1.1 Piping diagram: Outdoor unit...
Page 223 Technical data l Vacuum breaker EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 224: Wiring Diagram: Outdoor Unit
LAN adapter LAN adapter Main supply pump Main supply pump (= external pump) Ext outdoor thermistor External outdoor temperature sensor Bottom plate heater Bottom plate heater Main terminal EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 225 Outdoor unit: compressor module (1) Connection diagram English Translation Connection diagram Connection diagram Hydro switch box Hydro switch box Outdoor Outdoor (2) Layout English Translation Layout Layout EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 226 Fan motor PAM (PCB1) Pulse-amplitude modulation PCB1 Printed circuit board (main) PS (PCB1) Switching power supply Thermal protector Thermistor (outdoor air) Thermistor (heat exchanger) Thermistor (compressor discharge) EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 227: Noise Filter
3-WAY VALVE (heat pump convector) M3S (when tank is installed) 2 core selection domestic hot water–floor heating X2: 3-5-6 X4: 6-7 X11M: 5-6 230 V 230 V 4D115768A EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 228 OPTIONAL PART 2 core X2M: 1-9-10 2×0.75 MAIN PUMP communication Only for BRP069* X5M: 7-8 A13P: P1-P2 LAN adapter Bottom plate heater A1P: X14A-earth THIRD-PARTY BOILER INDOOR 4D115768A EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 229: Esp Curve: Outdoor Unit
▪ Selecting a flow outside the operating area can damage the unit or cause the unit to malfunction. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 230: Gas Boiler
Domestic hot water sensor S3 q Condensate S3 r Heat exchanger s Operating panel and read-out t Ionisation/ignition electrode u Position of data plate Bottom view EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 231: Wiring Diagram: Gas Boiler
X1 Gas valve and ignition electrode X2 Main power supply (2=L (BRN), 4=N (BLU)) X3 Power supply fan (230 V) X4 Sensor connection X5 Boiler communication cable X7 Sensor connection EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 232: Technical Specifications: Gas Boiler
Efficiency space heating (net calorific value 37/30 107.9% 108.3% (30%)) η30 Operation range 30~90°C Pressure drop See ESP curve in the installer reference guide. Maximum space heating water pressure (PMS) 3 bar EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 233 Boiler water volume 3.6 l 4.0 l Space heating water circuit Space heating piping connections Ø22 mm Piping material Copper Safety valve Not included Index 'x' only valid for DE. EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 234 Heat rated output (P 23 kW 27 kW rated Annual energy consumption (Q 47 GJ 53 GJ Seasonal space heating efficiency (η Sound power level indoors (at maximum heat output) (L Declared load profile EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 235 G25 (20 mbar) G31 (50 mbar) France II2Esi3P G20 (20 mbar) G25 (25 mbar) G31 (37 mbar) Italy II2H3P G20 (20 mbar) — G31 (37 mbar) United Kingdom II2H3P G20 (20 mbar) — G31 (37 mbar) EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 236 Technical data EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 237 Local Authority Building Control (LABC) either directly or through a Competent Persons Scheme. A Building Regulations Compliance will then be issued to the customer. © Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk EJHA04AAV3 + EHY2KOMB28+32AA Installer reference guide Daikin Altherma H Hybrid 4P531180-1D – 2025.03...
Page 238: Glossary
Optional equipment Equipment made or approved by Daikin that can be combined with the product according to the instructions in the accompanying documentation. Field supply Equipment NOT made by Daikin that can be combined with the product according to the instructions in the accompanying documentation.
Page 239: Field Settings Table
Field settings table Applicable indoor units EHY2KOMB28AA EHY2KOMB32AA NHY2KOMB28AA NHY2KOMB32AA Notes — 4P564438-1 - 2018.12...
Page 240 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value User settings └─ Preset values └─ Room temperature 7.4.1.1 Comfort (heating) [3-07]~[3-06], step: A.3.2.4 21°C 7.4.1.2 Eco (heating) [3-07]~[3-06], step: A.3.2.4 21°C └─...
Page 241 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value A.3.1.1.1 LWT setpoint mode 0: Fixed 1: Weather dep. 2: Fixed / scheduled 3: WD / scheduled A.3.1.1.2.1 [9-01] Temperature range Minimum temp (heating) 15~37°C, step: 1°C...
Page 242 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value A.6.D Disable protections 0: No 1: Yes └─ Overview settings [0-00] 35°C [0-01] 55°C [0-02] 15°C [0-03] -10°C [0-04] 8°C [0-05] 12°C...
Page 243 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [5-03] [5-04] [5-05] 50 A [5-06] 50 A [5-07] 50 A [5-08] 50 A [5-09] 20 kW [5-0A] 20 kW [5-0B] 20 kW [5-0C]...
Page 244 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [C-04] Bivalent hysteresis temperature. 2~10°C, step 1°C 3°C [C-05] What is the thermo request contact type for the main zone? 1: Thermo ON/OFF 2: C/H request [C-06]...
Page 248 4P531180-1D 2025.03...

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