Daikin EJHA04AAV3, EHY2KOMB28AA, EHY2KOMB32AA Installer reference guide
Installer reference guide
+
Daikin Altherma H Hybrid
EJHA04AAV3
NHY2KOMB28AA
NHY2KOMB32AA
Table of contents
Table of contents
1 General safety precautions 6
1.1 About the documentation .............................................................................................................................................. 6
1.1.1 Meaning of warnings and symbols ................................................................................................................ 6
1.2 For the installer............................................................................................................................................................... 7
1.2.1 General ........................................................................................................................................................... 7
1.2.2 Installation site ............................................................................................................................................... 8
1.2.3 Refrigerant ...................................................................................................................................................... 9
1.2.4 Brine................................................................................................................................................................ 11
1.2.5 Water .............................................................................................................................................................. 11
1.2.6 Electrical ......................................................................................................................................................... 12
1.2.7 Gas .................................................................................................................................................................. 13
1.2.8 Gas exhaust..................................................................................................................................................... 14
1.2.9 Local legislation .............................................................................................................................................. 14
2 About the product 16
3 About the documentation 17
3.1 About this document ...................................................................................................................................................... 17
3.2 Installer reference guide at a glance .............................................................................................................................. 18
4 About the box 19
4.1 Overview: About the box ................................................................................................................................................ 19
4.2 Outdoor unit ................................................................................................................................................................... 19
4.2.1 To unpack the outdoor unit ........................................................................................................................... 19
4.2.2 To handle the outdoor unit ............................................................................................................................ 19
4.2.3 To remove the accessories from the outdoor unit........................................................................................ 20
4.3 Gas boiler ........................................................................................................................................................................ 20
4.3.1 To unpack the gas boiler ................................................................................................................................ 20
4.3.2 To remove the accessories from the gas boiler............................................................................................. 22
5 About the system 23
5.1 Possible system layouts .................................................................................................................................................. 23
5.1.1 Dedicated gas boiler ....................................................................................................................................... 23
5.1.2 Third-party gas boiler ..................................................................................................................................... 24
5.2 Freeze protection............................................................................................................................................................ 25
5.2.1 Glycol or freeze protection valves ................................................................................................................. 25
5.2.2 Bottom plate heater ....................................................................................................................................... 26
6 About the units and options 27
6.1 Overview: About the units and options.......................................................................................................................... 27
6.2 Identification ................................................................................................................................................................... 27
6.2.1 Identification label: Outdoor unit .................................................................................................................. 27
6.2.2 Identification label: Gas boiler ....................................................................................................................... 28
6.3 Combining units and options.......................................................................................................................................... 29
6.3.1 Possible combinations of outdoor unit, gas boiler and domestic hot water tank ........................................ 29
6.3.2 Possible options for the outdoor unit ............................................................................................................ 29
6.3.3 Possible options for the gas boiler ................................................................................................................. 32
7 Application guidelines 38
7.1 Overview: Application guidelines ................................................................................................................................... 38
7.2 Setting up the space heating system – In case of dedicated gas boiler ........................................................................ 38
7.2.1 Single room ..................................................................................................................................................... 39
7.2.2 Multiple rooms – OneLWT zone ................................................................................................................... 42
7.3 Setting up the space heating system – In case of third-party gas boiler....................................................................... 46
7.3.1 Single room ..................................................................................................................................................... 47
7.3.2 Multiple rooms – OneLWT zone ................................................................................................................... 48
7.4 Setting up the domestic hot water tank......................................................................................................................... 50
7.4.1 System layout – Standalone DHW tank ......................................................................................................... 50
7.4.2 Selecting the volume and desired temperature for the DHW tank .............................................................. 50
7.4.3 Setup and configuration – DHW tank ............................................................................................................ 52
7.4.4 DHW pump for instant hot water .................................................................................................................. 52
7.4.5 DHW pump for disinfection ........................................................................................................................... 53
7.5 Setting up the energy metering...................................................................................................................................... 53
7.5.1 Consumed energy........................................................................................................................................... 54
7.6 Setting up the power consumption control ................................................................................................................... 54
7.6.1 Permanent power limitation .......................................................................................................................... 54
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EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1B – 2020.02
Table of contents
7.7 Setting up an external temperature sensor ................................................................................................................... 55
8 Preparation 56
8.1 Overview: Preparation.................................................................................................................................................... 56
8.2 Preparing the installation site......................................................................................................................................... 56
8.2.1 Installation site requirements of the outdoor unit........................................................................................ 56
8.2.2 Additional installation site requirements of the outdoor unit in cold climates............................................ 59
8.3 Preparing water piping ................................................................................................................................................... 59
8.3.1 Water piping lengths and height difference ................................................................................................. 59
8.3.2 Water circuit requirements............................................................................................................................ 62
8.3.3 Formula to calculate the expansion vessel pre-pressure .............................................................................. 64
8.3.4 To check the water volume and flow rate ..................................................................................................... 64
8.3.5 Changing the pre-pressure of the expansion vessel...................................................................................... 65
8.4 Preparing electrical wiring .............................................................................................................................................. 66
8.4.1 About preparing electrical wiring................................................................................................................... 66
8.4.2 Overview of electrical connections except external actuators ..................................................................... 66
8.4.3 Overview of electrical connections for external and internal actuators....................................................... 67
9 Installation 70
9.1 Overview: Installation ..................................................................................................................................................... 70
9.2 Opening the units ........................................................................................................................................................... 70
9.2.1 About opening the units................................................................................................................................. 70
9.2.2 To open the outdoor unit ............................................................................................................................... 70
9.2.3 To open the gas boiler.................................................................................................................................... 71
9.2.4 To open the switch box cover of the gas boiler............................................................................................. 71
9.3 Mounting the outdoor unit............................................................................................................................................. 72
9.3.1 About mounting the outdoor unit ................................................................................................................. 72
9.3.2 Precautions when mounting the outdoor unit .............................................................................................. 72
9.3.3 To provide the installation structure ............................................................................................................. 72
9.3.4 To install the outdoor unit ............................................................................................................................. 74
9.3.5 To provide drainage........................................................................................................................................ 75
9.3.6 To prevent the outdoor unit from falling over .............................................................................................. 75
9.4 Mounting the gas boiler.................................................................................................................................................. 76
9.4.1 To install the gas boiler .................................................................................................................................. 76
9.4.2 To install the condensate trap ....................................................................................................................... 77
9.5 Condensate pipe work .................................................................................................................................................... 78
9.5.1 Internal connections....................................................................................................................................... 78
9.5.2 External connections ...................................................................................................................................... 80
9.6 Connecting water piping................................................................................................................................................. 80
9.6.1 About connecting the water piping ............................................................................................................... 80
9.6.2 Precautions when connecting the water piping ............................................................................................ 80
9.6.3 Connecting the water piping of the outdoor unit ......................................................................................... 81
9.6.4 Connecting the water piping of the gas boiler .............................................................................................. 83
9.6.5 To protect the water circuit against freezing ................................................................................................ 85
9.6.6 To fill the space heating circuit ...................................................................................................................... 90
9.6.7 To fill the domestic water circuit of the gas boiler ........................................................................................ 92
9.6.8 To fill the domestic hot water tank ................................................................................................................ 92
9.6.9 To insulate the water piping .......................................................................................................................... 92
9.7 Connecting the electrical wiring..................................................................................................................................... 92
9.7.1 About connecting the electrical wiring .......................................................................................................... 92
9.7.2 Precautions when connecting the electrical wiring....................................................................................... 93
9.7.3 Guidelines when connecting the electrical wiring......................................................................................... 94
9.7.4 In case of dedicated gas boiler ....................................................................................................................... 95
9.7.5 In case of third-party gas boiler ..................................................................................................................... 101
9.8 Connecting the gas piping .............................................................................................................................................. 105
9.8.1 To connect the gas pipe ................................................................................................................................. 105
9.9 Connecting the boiler to the flue gas system................................................................................................................. 106
9.9.1 To change the gas boiler to 80/125 concentric connection.......................................................................... 106
9.9.2 To change the 60/100 concentric connection to a dual pipe connection .................................................... 107
9.9.3 Calculate the total piping length .................................................................................................................... 108
9.9.4 Appliance categories and pipe lengths .......................................................................................................... 109
9.9.5 Applicable materials ....................................................................................................................................... 114
9.9.6 Flue pipe position ........................................................................................................................................... 115
9.9.7 Insulation of the gas exhaust and air intake .................................................................................................. 116
9.9.8 Fitting a horizontal flue system ...................................................................................................................... 116
9.9.9 Fitting a vertical flue system .......................................................................................................................... 117
9.9.10 Plume management kit .................................................................................................................................. 117
9.9.11 Flues in voids .................................................................................................................................................. 118
9.9.12 Flue gas materials (C63) available on the market.......................................................................................... 119
9.9.13 About securing the flue system ..................................................................................................................... 120
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1B – 2020.02
Installer reference guide
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Table of contents
9.10 Finishing the outdoor unit installation ........................................................................................................................... 121
9.10.1 To close the outdoor unit............................................................................................................................... 121
9.11 Finishing the gas boiler installation ................................................................................................................................ 122
9.11.1 To perform an air purge on the gas supply.................................................................................................... 122
9.11.2 To close the gas boiler.................................................................................................................................... 123
9.11.3 To install the cover plate................................................................................................................................ 123
10 Configuration 124
10.1 Outdoor unit ................................................................................................................................................................... 124
10.1.1 Overview: Configuration ................................................................................................................................ 124
10.1.2 Basic configuration ......................................................................................................................................... 127
10.1.3 Advanced configuration/optimization ........................................................................................................... 139
10.1.4 Menu structure: Overview user settings ....................................................................................................... 156
10.1.5 Menu structure: Overview installer settings ................................................................................................. 157
10.2 Gas boiler ........................................................................................................................................................................ 158
10.2.1 Overview: Configuration ................................................................................................................................ 158
10.2.2 Basic configuration ......................................................................................................................................... 158
11 Operation 169
11.1 Overview: Operation....................................................................................................................................................... 169
11.2 Heating ............................................................................................................................................................................ 169
11.3 Domestic hot water ........................................................................................................................................................ 169
11.3.1 Flow resistance graph for appliance domestic hot water circuit .................................................................. 170
11.4 Operation modes ............................................................................................................................................................ 170
12 Commissioning 172
12.1 Overview: Commissioning .............................................................................................................................................. 172
12.2 Precautions when commissioning .................................................................................................................................. 172
12.3 Checklist before commissioning ..................................................................................................................................... 173
12.4 Checklist during commissioning ..................................................................................................................................... 174
12.4.1 Air purge function........................................................................................................................................... 174
12.4.2 To perform a test run ..................................................................................................................................... 176
12.4.3 To perform an actuator test run .................................................................................................................... 177
12.4.4 Underfloor heating screed dryout ................................................................................................................. 177
12.4.5 To perform a gas pressure test ...................................................................................................................... 180
12.4.6 To perform a test run on the gas boiler......................................................................................................... 181
13 Hand-over to the user 182
14 Maintenance and service 183
14.1 Overview: Maintenance and service .............................................................................................................................. 183
14.2 Maintenance safety precautions .................................................................................................................................... 183
14.3 Outdoor unit ................................................................................................................................................................... 183
14.3.1 Opening the outdoor unit .............................................................................................................................. 183
14.3.2 Checklist for yearly maintenance of the outdoor unit .................................................................................. 183
14.4 Gas boiler ........................................................................................................................................................................ 185
14.4.1 Opening the gas boiler ................................................................................................................................... 185
14.4.2 To disassemble the gas boiler ........................................................................................................................ 185
14.4.3 To clean the inside of the gas boiler .............................................................................................................. 188
14.4.4 To assemble the gas boiler............................................................................................................................. 189
15 Troubleshooting 191
15.1 Overview: Troubleshooting ............................................................................................................................................ 191
15.2 Precautions when troubleshooting ................................................................................................................................ 191
15.3 General guidelines .......................................................................................................................................................... 191
15.4 Solving problems based on symptoms ........................................................................................................................... 192
15.4.1 Symptom: The unit is NOT heating as expected............................................................................................ 192
15.4.2 Symptom: The compressor does NOT start (space heating or domestic water heating) ............................ 193
15.4.3 Symptom: The pump is making noise (cavitation)......................................................................................... 193
15.4.4 Symptom: The pressure relief valve opens.................................................................................................... 193
15.4.5 Symptom: The water pressure relief valve leaks........................................................................................... 194
15.4.6 Symptom: The space is NOT sufficiently heated at low outdoor temperatures........................................... 194
15.4.7 Symptom: The pressure at the tapping point is temporarily unusually high................................................ 195
15.4.8 Symptom: Tank disinfection function is NOT completed correctly (AH-error)............................................. 195
15.4.9 Symptom: Boiler abnormality detection (HJ-11 error).................................................................................. 195
15.4.10 Symptom: Boiler/hydrobox combination abnormality (UA-52 error)........................................................... 195
15.4.11 Symptom: The burner does NOT ignite ......................................................................................................... 196
15.4.12 Symptom: The burner ignites noisily ............................................................................................................. 196
15.4.13 Symptom: The burner resonates ................................................................................................................... 196
15.4.14 Symptom: No space heating by the gas boiler .............................................................................................. 197
15.4.15 Symptom: The power is reduced ................................................................................................................... 197
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EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1B – 2020.02
Table of contents
15.4.16 Symptom: Space heating does NOT reach the temperature ........................................................................ 197
15.4.17 Symptom: No domestic hot water ................................................................................................................. 198
15.4.18 Symptom: Hot water does NOT reach the temperature (no tank installed) ................................................ 198
15.4.19 Symptom: Hot water does NOT reach the temperature (tank installed) ..................................................... 198
15.5 Solving problems based on LED behaviour .................................................................................................................... 198
15.5.1 Location of the outdoor unit LED................................................................................................................... 198
15.5.2 To diagnose faults........................................................................................................................................... 199
15.6 Solving problems based on error codes ......................................................................................................................... 199
15.6.1 Error codes: Overview.................................................................................................................................... 200
16 Disposal 207
16.1 Overview: Disposal.......................................................................................................................................................... 207
16.2 To pump down ................................................................................................................................................................ 207
17 Technical data 209
17.1 Outdoor unit ................................................................................................................................................................... 209
17.1.1 Piping diagram: Outdoor unit......................................................................................................................... 209
17.1.2 Wiring diagram: Outdoor unit........................................................................................................................ 211
17.1.3 ESP curve: Outdoor unit ................................................................................................................................. 216
17.2 Gas boiler ........................................................................................................................................................................ 217
17.2.1 Components: Gas boiler................................................................................................................................. 217
17.2.2 Wiring diagram: Gas boiler............................................................................................................................. 218
17.2.3 Technical specifications: Gas boiler ............................................................................................................... 219
18 Glossary 226
19 Field settings table 227
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1B – 2020.02
Installer reference guide
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1 | General safety precautions
1 General safety precautions
1.1 About the documentation
▪ The original documentation is written in English. All other languages are
translations.
▪ The precautions described in this document cover very important topics, follow
them carefully.
▪ The installation of the system, and all activities described in the installation
manual and in the installer reference guide MUST be performed by an authorised
installer.
1.1.1 Meaning of warnings and symbols
DANGER
Indicates a situation that results in death or serious injury.
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
DANGER: RISK OF BURNING
Indicates a situation that could result in burning because of extreme hot or cold
temperatures.
DANGER: RISK OF EXPLOSION
Indicates a situation that could result in explosion.
DANGER: RISK OF POISONING
Indicates a situation that could result in poisoning.
WARNING
Indicates a situation that could result in death or serious injury.
WARNING: PROTECT AGAINST FROST
Indicates a situation that could result in equipment or property damage.
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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 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1B – 2020.02
INFORMATION
Indicates useful tips or additional information.
Symbols used on the unit:
Symbol Explanation
Before installation, read the installation and operation
manual, and the wiring instruction sheet.
Before performing maintenance and service tasks, read the
service manual.
For more information, see the installer and user reference
guide.
The unit contains rotating parts. Be careful when servicing or
inspecting the unit.
Symbols used in the documentation:
Symbol Explanation
Indicates a figure title or a reference to it.
1 | General safety precautions
1.2 For the installer
1.2.1 General
If you are NOT sure how to install or operate the unit, contact your dealer.
Example: " 1–3 Figure title" means "Figure 3 in chapter 1".
Indicates a table title or a reference to it.
Example: " 1–3 Table title" means "Table 3 in chapter 1".
DANGER: RISK OF BURNING
▪ Do NOT touch the refrigerant piping, water piping or internal parts during and
immediately after operation. It could be too hot or too cold. Give it time to return
to normal temperature. If you must touch it, wear protective gloves.
▪ Do NOT touch any accidental leaking refrigerant.
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.
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1B – 2020.02
WARNING
Make sure installation, testing and applied materials comply with applicable
legislation (on top of the instructions described in the Daikin documentation).
CAUTION
Wear adequate personal protective equipment (protective gloves, safety glasses,…)
when installing, maintaining or servicing the system.
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1 | General safety precautions
WARNING
Tear apart and throw away plastic packaging bags so that nobody, especially
children, can play with them. Possible risk: suffocation.
WARNING
Provide adequate measures to prevent that the unit can be used as a shelter by small
animals. Small animals that make contact with electrical parts can cause
malfunctions, smoke or fire.
CAUTION
Do NOT touch the air inlet or aluminium fins of the unit.
CAUTION
▪ Do NOT place any objects or equipment on top of the unit.
▪ Do NOT sit, climb or stand on the unit.
NOTICE
Works executed on the outdoor unit are best done under dry weather conditions to
avoid water ingress.
1.2.2 Installation site
In accordance with the applicable legislation, it might be necessary to provide a
logbook with the product containing at least: information on maintenance, repair
work, results of tests, stand-by periods,…
Also, at least, following information MUST be provided at an accessible place at the
product:
▪ Instructions for shutting down the system in case of an emergency
▪ Name and address of fire department, police and hospital
▪ Name, address and day and night telephone numbers for obtaining service
In Europe, EN378 provides the necessary guidance for this logbook.
For Swiss market, domestic hot water operation should only be prepared in
combination with a tank. Instant domestic hot water by the gas boiler is NOT
allowed. Make the correct settings as described in this manual.
Please follow following Swiss regulations and directives:
▪ SVGW-gas principles G1 for gas installations,
▪ SVGW-gas principles L1 for liquid gas installations,
▪ cautional instances regulations (e.g., fire regulation).
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▪ Provide sufficient space around the unit for servicing and air circulation.
▪ Make sure the installation site withstands the weight and vibration of the unit.
▪ Make sure the area is well ventilated. Do NOT block any ventilation openings.
▪ Make sure the unit is level.
▪ 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 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1B – 2020.02
1 | General safety precautions
▪ ONLY operate the gas boiler if a sufficient supply of combustion air is ensured. In
case of a concentric air/flue gas system dimensioned according to the
specifications of this manual, this is fulfilled automatically and there are no other
conditions for the equipment installation room. This method of operation applies
exclusively.
▪ Store flammable fluids and materials at least 1meter away from the gas boiler.
Do NOT install the unit in the following places:
▪ In potentially explosive atmospheres.
▪ In places where there is machinery that emits electromagnetic waves.
Electromagnetic waves may disturb the control system, and cause malfunction of
the equipment.
▪ In places where there is a risk of fire due to the leakage of flammable gases
(example: thinner or gasoline), carbon fibre, ignitable dust.
▪ In places where corrosive gas (example: sulphurous acid gas) is produced.
Corrosion of copper pipes or soldered parts may cause the refrigerant to leak.
▪ In bathrooms.
▪ In places where frost is possible. The ambient temperature around the gas boiler
should be >5°C.
1.2.3 Refrigerant
If applicable. See the installation manual or installer reference guide of your
application for more information.
NOTICE
Make sure refrigerant piping installation complies with applicable legislation. In
Europe, EN378 is the applicable standard.
NOTICE
Make sure the field piping and connections are NOT subjected to stress.
WARNING
During tests, NEVER pressurize the product with a pressure higher than the
maximum allowable pressure (as indicated on the nameplate of the unit).
WARNING
Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks,
ventilate the area immediately. Possible risks:
▪ Excessive refrigerant concentrations in a closed room can lead to oxygen
deficiency.
▪ In case of R410A or R32 refrigerant: Toxic gas might be produced if refrigerant
gas comes into contact with fire.
▪ In case of CO
refrigerant: Refrigerant gas is toxic in high concentrations.
2
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1B – 2020.02
Installer reference guide
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1 | General safety precautions
DANGER: RISK OF EXPLOSION
Pump down – Refrigerant leakage. If you want to pump down the system, and there
is a leak in the refrigerant circuit:
▪ Do NOT use the unit's automatic pump down function, with which you can collect
all refrigerant from the system into the outdoor unit. Possible consequence: Selfcombustion and explosion of the compressor because of air going into the
operating compressor.
▪ Use a separate recovery system so that the unit's compressor does NOT have to
operate.
WARNING
ALWAYS recover the refrigerant. Do NOT release them directly into the environment.
Use a vacuum pump to evacuate the installation.
NOTICE
After all the piping has been connected, make sure there is no gas leak. Use nitrogen
to perform a gas leak detection.
NOTICE
▪ To avoid compressor breakdown, do NOT charge more than the specified amount
of refrigerant.
▪ When the refrigerant system is to be opened, refrigerant MUST be treated
according to the applicable legislation.
WARNING
Make sure there is no oxygen in the system. Refrigerant may only be charged after
performing the leak test and the vacuum drying.
Possible consequence: Self-combustion and explosion of the compressor because of
oxygen going into the operating compressor.
▪ In case recharge is required, see the nameplate of the unit. It states the type of
refrigerant and necessary amount.
▪ The unit is factory charged with refrigerant and depending on pipe sizes and pipe
lengths some systems require additional charging of refrigerant.
▪ Only use tools exclusively for the refrigerant type used in the system, this to
ensure pressure resistance and prevent foreign materials from entering into the
system.
▪ Charge the liquid refrigerant as follows:
If Then
A siphon tube is present
Charge with the cylinder upright.
(i.e., the cylinder is marked with "Liquid
filling siphon attached")
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A siphon tube is NOT present Charge with the cylinder upside down.
▪ Open refrigerant cylinders slowly.
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1B – 2020.02
1.2.4 Brine
1 | General safety precautions
▪ Charge the refrigerant in liquid form. Adding it in gas form may prevent normal
operation.
CAUTION
When the refrigerant charging procedure is done or when pausing, close the valve of
the refrigerant tank immediately. If the valve is NOT closed immediately, remaining
pressure might charge additional refrigerant. Possible consequence: Incorrect
refrigerant amount.
If applicable. See the installation manual or installer reference guide of your
application for more information.
WARNING
The selection of the brine MUST be in accordance with the applicable legislation.
WARNING
Take sufficient precautions in case of brine leakage. If brine leaks, ventilate the area
immediately and contact your local dealer.
1.2.5 Water
WARNING
The ambient temperature inside the unit can get much higher than that of the room,
e.g. 70°C. In case of a brine leak, hot parts inside the unit can create a hazardous
situation.
WARNING
The use and installation of the application MUST comply with the safety and
environmental precautions specified in the applicable legislation.
If applicable. See the installation manual or installer reference guide of your
application for more information.
NOTICE
Make sure water quality complies with EU directive 98/83EC.
Avoid damages caused by deposits and corrosion. To prevent corrosion products
and deposits, observe the applicable regulations of technology.
Measures for desalination, softening or hardness stabilization are necessary if the
filling and top-up water have a high total hardness (>3mmol/l–sum of the calcium
and magnesium concentrations, calculated as calcium carbonate).
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1B – 2020.02
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.
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1 | General safety precautions
1.2.6 Electrical
DANGER: RISK OF ELECTROCUTION
▪ Turn OFF all power supply before removing the switch box cover, connecting
electrical wiring or touching electrical parts.
▪ Disconnect the power supply for more than 1minute, and measure the voltage at
the terminals of main circuit capacitors or electrical components before servicing.
The voltage MUST be less than 50 V DC before you can touch electrical
components. For the location of the terminals, see the wiring diagram.
▪ Do NOT touch electrical components with wet hands.
▪ Do NOT leave the unit unattended when the service cover is removed.
WARNING
If NOT factory installed, a main switch or other means for disconnection, having a
contact separation in all poles providing full disconnection under overvoltage
categoryIII condition, MUST be installed in the fixed wiring.
WARNING
▪ ONLY use copper wires.
▪ Make sure the field wiring complies with the applicable legislation.
▪ All field wiring MUST be performed in accordance with the wiring diagram
supplied with the product.
▪ NEVER squeeze bundled cables and make sure they do NOT come in contact with
the piping and sharp edges. Make sure no external pressure is applied to the
terminal connections.
▪ Make sure to install earth wiring. Do NOT earth the unit to a utility pipe, surge
absorber, or telephone earth. Incomplete earth may cause electrical shock.
▪ Make sure to use a dedicated power circuit. NEVER use a power supply shared by
another appliance.
▪ Make sure to install the required fuses or circuit breakers.
▪ Make sure to install an earth leakage protector. Failure to do so may cause
electrical shock or fire.
▪ When installing the earth leakage protector, make sure it is compatible with the
inverter (resistant to high frequency electric noise) to avoid unnecessary opening
of the earth leakage protector.
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CAUTION
▪ When connecting the power supply: connect the earth cable first, before making
the current-carrying connections.
▪ When disconnecting the power supply: disconnect the current-carrying cables
first, before separating the earth connection.
▪ The length of the conductors between the power supply stress relief and the
terminal block itself 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 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1B – 2020.02
1 | General safety precautions
NOTICE
Precautions when laying power wiring:
▪ Do NOT connect wiring of different thicknesses to the power terminal block (slack
in the power wiring may cause abnormal heat).
▪ When connecting wiring which is the same thickness, do as shown in the figure
above.
▪ For wiring, use the designated power wire and connect firmly, then secure to
prevent outside pressure being exerted on the terminal board.
▪ Use an appropriate screwdriver for tightening the terminal screws. A screwdriver
with a small head will damage the head and make proper tightening impossible.
▪ Over-tightening the terminal screws may break them.
Install power cables at least 1 m away from televisions or radios to prevent
interference. Depending on the radio waves, a distance of 1 m may not be
sufficient.
1.2.7 Gas
WARNING
▪ After finishing the electrical work, confirm that each electrical component and
terminal inside the electrical components box is connected securely.
▪ Make sure all covers are closed before starting up the unit.
NOTICE
Only applicable if the power supply is three‑phase, and the compressor has an ON/
OFF starting method.
If there exists the possibility of reversed phase after a momentary black out and the
power goes on and off while the product is operating, attach a reversed phase
protection circuit locally. Running the product in reversed phase can break the
compressor and other parts.
The gas boiler is factory‑set to:
▪ the type of gas quoted on the type identification plate or on the setting type
identification plate,
▪ the gas pressure quoted on the type identification plate.
Operate the unit ONLY with the gas type and gas pressure indicated on these type
identification plates.
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Installation and adaptation of the gas system MUST be conducted by:
▪ personnel qualified for this work,
▪ in compliance with valid gas installation related guidelines,
▪ in accordance with applicable regulations of the gas supply company,
▪ In accordance with local and national regulations.
Boilers that use natural gas MUST be connected to a governed meter.
Boilers that use liquid petroleum gas (LPG) MUST be connected to a regulator.
The size of the gas supply pipe should under no circumstance be less than 22mm.
Installer reference guide
13
1 | General safety precautions
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.
1.2.8 Gas exhaust
Flue systems must NOT be modified or installed in any way other than as described
in the fitting instructions. Any misuses or unauthorized modifications to the
appliance, flue or associated components and systems could invalidate the
warranty. The manufacturer accepts no liability arising from any such actions,
excluding statutory rights.
DANGER
If you smell gas:
▪ call immediately your local gas supplier and your installer,
▪ call the suppliers's number on the side of the LPG tank (if applicable),
▪ turn off the emergency control valve at the meter/regulator,
▪ do NOT turn electrical switches ON or OFF,
▪ do NOT strike matches or smoke,
▪ put out naked flames,
▪ open doors and windows immediately,
▪ keep people away from the affected area.
1.2.9 Local legislation
It is NOT allowed to combine flue system parts purchased from different suppliers.
See the local and national regulations.
Local regulations for UK
It is law that all gas appliances are installed by a gas safe registered competent
engineer and in accordance with the following recommendations:
▪ Current Gas Safety (Installation and Use) Regulations
▪ All current building regulations
▪ Building Standards (Scotland) Consolidated
▪ This appliance MUST be installed in accordance with the Gas (Safety and Use)
Regulations, current Building Regulations, Building Standards (Scotland), I.S.813
Installation of Gas Appliances (Ireland), IEE Wiring Regulations (BS 7671), Health
and Safety Document No. 635 (Electricity at Work Regulations) and Local Water
Authority Bye Laws
▪ UK Water Regulations and Bye Laws
▪ Health & Safety
The installation MUST comply with the following British Standards codes of
practice:
Installer reference guide
14
▪ BS 5440-1: 2008 Flueing and ventilation for gas appliances of rated input not
exceeding 70kW net (1st, 2nd and 3rd family gases)
▪ BS 5440-2: 2009 Flueing and ventilation for gas appliances of rated input not
exceeding 70kW net (1st, 2nd and 3rd family gases)
▪ BS 5546: 2010 Specification for installation and maintenance of gas-fired water-
heating appliances of rated input not exceeding 70kW net
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1 | General safety precautions
▪ 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
▪ BS 6798: 2014 Specification for selection, installation, inspection, commissioning,
servicing and maintenance of gas-fired boilers of rated input not exceeding
70kW net
▪ BS 6891: 2015 Specification for the installation and maintenance of low pressure
gas installation pipework of up to 35mm (R1¼) on premises
▪ BS 7593: 2006 Code of practice for treatment of water in domestic hot water
space heating systems
▪ BS 7671: 2018 Requirements for electrical installations. IET wiring regulations
▪ BS 7074: 1 Code of practice for domestic and hot water supply
▪ EN12828: 2014 Space heating for domestic premises
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.
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Installer reference guide
15
2 | About the product
a
2 About the product
Especially for UK:
The Benchmark Scheme
Benchmark places responsibilities on both manufacturers and installers. The
purpose is to ensure that customers are provided with the correct equipment for
their needs, that it is installed, commissioned and serviced in accordance with the
manufacturer’s instructions by competent persons and that it meets the
requirements of the appropriate Building Regulations. The Benchmark Checklist
can be used to demonstrate compliance with Building Regulations and should be
provided to the customer for future reference.
Installers are required to carry out installation, commissioning and servicing work
in accordance with the Benchmark Code of Practice which is available from the
Heating and Hotwater Industry Council who manage and promote the Scheme.
Visit http://www.centralheating.co.uk for more information.
Installer reference guide
16
a Gas boiler module
INFORMATION
This product is intended for domestic use only.
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3 About the documentation
3.1 About this document
WARNING
This appliance is not intended for use by persons, including children, with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
Cleaning and user maintenance must not be carried out by children without
supervision.
Target audience
Authorised installers
Documentation set
This document is part of a documentation set. The complete set consists of:
3 | About the documentation
▪ General safety precautions:
- Safety instructions that you must read before installing
- Format: Paper (in the box of the outdoor unit)
▪ Operation manual:
- Quick guide for basic usage
- 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 http://www.daikineurope.com/support-and-manuals/
product-information/
▪ Installation manual – Heat pump module:
- Installation instructions
- Format: Paper (in the box of the outdoor unit)
▪ Installation and operation manual – Gas boiler module:
- Installation and operation instructions
- Format: Paper (in the box of the gas boiler)
▪ Installer reference guide:
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- Preparation of the installation, good practices, reference data,…
- Format: Digital files on http://www.daikineurope.com/support-and-manuals/
product-information/
▪ Addendum book for optional equipment:
- Additional info about how to install optional equipment
- Format: Paper (in the box of the outdoor unit) + Digital files on http://
www.daikineurope.com/support-and-manuals/product-information/
Latest revisions of the supplied documentation may be available on the regional
Daikin website or via your dealer.
Installer reference guide
17
3 | About the documentation
The original documentation is written in English. All other languages are
translations.
Technical engineering data
▪ A subset of the latest technical data is available on the regional Daikin website
(publicly accessible).
▪ The full set of latest technical data is available on the Daikin Business Portal
(authentication required).
3.2 Installer reference guide at a glance
General safety precautions Safety instructions that you must read before
About the product Required combination of heat pump module
About the documentation What documentation exists for the installer
About the box How to unpack the units and remove their
Chapter Description
installing
and gas boiler module
accessories
About the units and options ▪ How to identify the units
▪ Possible combinations of units and options
Preparation What to do and know before going on‑site
Installation What to do and know to install the system
Configuration What to do and know to configure the system
after it is installed
Operation Operation modes of the gas boiler module
Commissioning What to do and know to commission the system
after it is configured
Hand‑over to the user What to give and explain to the user
Maintenance and service How to maintain and service the units
Troubleshooting What to do in case of problems
Disposal How to dispose of the system
Technical data Specifications of the system
Glossary Definition of terms
Field settings table Table to be filled in by the installer, and kept for
future reference
Installer reference guide
18
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.
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4 About the box
1 2
4.1 Overview: About the box
This chapter describes what you have to do after the boxes with the outdoor unit
and the gas boiler are delivered on-site.
Keep the following in mind:
▪ At delivery, the unit MUST be checked for damage. Any damage MUST be
reported immediately to the claims agent of the carrier.
▪ Bring the packed unit as close as possible to its final installation position to
prevent damage during transport.
▪ Prepare the path along which you want to bring the unit inside in advance.
4.2 Outdoor unit
4.2.1 To unpack the outdoor unit
4 | About the box
4.2.2 To handle the outdoor unit
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CAUTION
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:
Installer reference guide
19
4 | About the box
1×
2×
1×
1× 1× 1×
ENERG
IJAY
IAIE
ENERG
IJAY
IAIE
1×
j
ihd e f g
1× 1× 1×
a b c
4.2.3 To remove the accessories from the outdoor unit
Carry the unit slowly as shown:
1 Lift the outdoor unit. See "4.2.2To handle the outdoor unit"[419].
2 Remove the accessories at the bottom of the package.
4.3 Gas boiler
4.3.1 To unpack the gas boiler
Before unpacking, move the gas boiler as close as possible to its installation
position.
a Connection piece (with O-ring) for freeze protection valve inside the outdoor unit
b Freeze protection valve (for inside the outdoor unit)
c Vacuum breaker (for outside the outdoor unit)
d General safety precautions
e Addendum book for optional equipment
f Outdoor unit installation manual
g Operation manual
h Energy label
i Cable gland
j Drain plug
Installer reference guide
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4 | About the box
1
2
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WARNING
Tear apart and throw away plastic packaging bags so that nobody, especially
children, can play with them. Possible risk: suffocation.
Installer reference guide
21
4 | About the box
a
b
c d
a b c d
4.3.2 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
Installer reference guide
22
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5 About the system
a
c
b
d2
d1
d2
b
a
c
a c
b
d
65°C
95
°C95°C
5.1 Possible system layouts
INFORMATION
This topic contains basic information about the possible system layouts. For more
information, see the "Application guidelines" chapter.
The system layout differs depending on the gas boiler. You can combine the
outdoor unit (=EJHA04AAV3) with either a dedicated or a third-party gas boiler.
Dedicated gas boiler
a Outdoor unit
b Gas boiler
c Space heating circuit
5 | About the system
Third-party gas boiler
5.1.1 Dedicated gas boiler
The dedicated gas boiler (=NHY2KOMB28+32AA) is recommended for new
installations.
Using this gas boiler, you can produce domestic hot water as follows:
▪ Domestic hot water by tank
▪ Instant domestic hot water by gas boiler
Dedicated gas boiler + Instant domestic hot water
a Outdoor unit
b Gas boiler
c Space heating circuit
d Parts of mandatory options EKADDONJH and EKADDONJH2 (= connection kit for third-party gas boiler):
d1: External pump (EKADDONJH)
d2: Non-return valve EKADDONJH2)
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a Outdoor unit
b Gas boiler
c Space heating circuit
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23
5 | About the system
a b c
e
d
M
95°C95°C
89°
C
e5
≤10 m
e1
e4
e2
e3
f1 f2
f3
f4
f5
a
b
c
d
e5
d Instant domestic hot water
Dedicated gas boiler + Domestic hot water via tank
a Outdoor unit
b Gas boiler
c Space heating circuit
d Domestic hot water via tank
e Motorised 3‑way valve
5.1.2 Third-party gas boiler
For existing installations, you do not need to buy a new gas boiler. You can reuse
the existing gas boiler, and the wiring of the old thermostat.
Using this gas boiler, you can only produce domestic hot water as instant domestic
hot water by gas boiler.
Third-party gas boiler + Instant domestic hot water
Installer reference guide
24
a Outdoor unit
b Gas boiler
c Space heating circuit
d Instant domestic hot water
e1~e5 Parts of mandatory options EKADDONJH and EKADDONJH2 (= connection kit for
third-party gas boiler). For installation instructions, see the installation manual of
the connection kit.
e1: External pump (EKADDONJH)
e2: External pump cable – Power supply (EKADDONJH2)
e3: External pump cable – Pulse-width modulation (PWM) signal (EKADDONJH2)
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5 | About the system
0
–30 –25 –20 –15 –10 –5 0 5
20
30
40
50
60
10
Ta (°C)
T
min
(°C)
e4: Distance between external pump and gas boiler must be as short as possible
e5: Non-return valve (EKADDONJH2)
f1~f5 Connection of user interface (you can reuse old wiring):
f1: Remove old thermostat
f2: Install new user interface
f3: Reuse old wiring
f4: Disconnect old wiring from the gas boiler, and connect it to new wiring
f5: Connect new wiring to the outdoor unit
Third-party gas boiler + Domestic hot water via tank
Not possible.
Setpoint of the third-party gas boiler
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
min
.
TaOutdoor temperature
T
Minimum weather-dependent setpoint for third-party gas boiler
min
5.2 Freeze protection
You must protect the system against freezing. This involves:
▪ Choosing between glycol and freeze protection valves
▪ Installing the bottom plate heater
5.2.1 Glycol or freeze protection valves
Frost can damage the system. To prevent the hydraulic components from freezing,
the software is equipped with special frost protection functions, that include the
activation of pump in case of low temperatures.
However, in case of a power failure, these functions cannot guarantee protection.
Do one of the following to protect the water circuit against freezing:
▪ Add glycol to the water. Glycol lowers the freezing point of the water.
▪ Install freeze protection valves. Freeze protection valves drain the water from
the system before it can freeze.
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NOTICE
If you add glycol to the water, do NOT install freeze protection valves. Possible
consequence: Glycol leaking out of the freeze protection valves.
INFORMATION
For more information about glycol and freeze protection valves, see "9.6.5To protect
the water circuit against freezing"[485].
Installer reference guide
25
5 | About the system
5.2.2 Bottom plate heater
To prevent freeze-up of the bottom plate you can install the optional bottom plate
heater. In certain circumstances this is required.
Bottom plate heater (EKBPHT04JH)
▪ Prevents freeze-up of the bottom plate.
▪ Required in areas with ambient temperature <–5°C and high relative humidity for
at least 3 consecutive days.
▪ For installation instructions, see the installation manual of the bottom plate
heater.
NOTICE
▪ 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.
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6 About the units and options
6.1 Overview: About the units and options
This chapter contains information about:
▪ Identifying the outdoor unit
▪ Identifying the gas boiler
▪ Combining outdoor unit and gas boiler
▪ Combining the outdoor unit with options
▪ Combining the gas boiler with options
6.2 Identification
NOTICE
When installing or servicing several units at the same time, make sure NOT to switch
the service panels between different models.
6 | About the units and options
6.2.1 Identification label: Outdoor unit
Location
Model identification
Example: EJHA04AAV3
Code Explanation
EJ Hybrid monobloc outdoor pair heating only
H Low water temperature – ambient zone 3 (see operation
A Refrigerant R32
range)
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04 Capacity class
AA Model series
V3 Power supply
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6 | About the units and options
6.2.2 Identification label: Gas boiler
Location
Model identification
Unit detail Description
******-yymm****** Product code-Serial No.
yy = year of production, mm = month of
production
PIN Product Identification Number
Data related to domestic hot water
Data related to space heating
Information regarding electrical power
supply (Voltage, mains frequency,
elmax, IP-class)
PMS Permissible overpressure in space
heating circuit
PWS Permissible overpressure in domestic
hot water circuit
Qn HS Input related to gross caloric value in
kilowatts
Qn Hi Input related to net caloric value in
kilowatts
Pn Output in kilowatts
DE, FR, GB, IT, NL Countries of Destination (EN437)
I2E(s), I2H, IIELL3P, II2H3P, II2Esi3P Approved unit categories (EN437)
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G20-20mbar
G25-25mbar
Gas group and gas connection pressure
as set at the factory (EN437)
B23, …., C93(x) Approved flue gas category (EN15502)
Tmax Maximum flow temperature in °C
IPX4D Electrical protection class
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6 | About the units and options
6.3 Combining units and options
6.3.1 Possible combinations of outdoor unit, gas boiler and domestic hot water tank
System Remark
Outdoor unit Gas boiler DHW tank DHW Space heating
EJHA04AAV3 NHY2KOMB28
AA
NHY2KOMB32
AA
EKHWS*D* Domestic hot water by tank.
EKHWP
Third-party
Tank heated:
(b)
▪ By outdoor unit only, or
▪ By gas boiler only
(a)
— Instant domestic hot water by
gas boiler
▪ By outdoor unit only, or
▪ By gas boiler only, or
▪ By combination of outdoor
unit and gas boiler
▪ By outdoor unit only, or
▪ By gas boiler only, or
▪ By combination of outdoor
unit and gas boiler
Third-party — Instant domestic hot water by
gas boiler
▪ By outdoor unit only, or
▪ By gas boiler only (bivalent
operation)
(a)
Maximum tank setpoint is 60°C.
(b)
Third-party tank is possible, but comfort cannot be guaranteed. See the minimum requirements for third-party tanks in
"8.3.2Water circuit requirements"[462].
6.3.2 Possible options for the outdoor unit
User interface (EKRUHML*)
The user interface is required for operation, but has to be ordered separately
(mandatory option).
Following user interfaces are available:
▪ EKRUHML1 contains the following languages: English, French, Dutch, Italian.
▪ EKRUHML2 contains the following languages: English, German, Dutch, Italian.
For installation instructions, see "To connect the user interface"[497].
Remote outdoor sensor (EKRSCA1)
By default the sensor inside the outdoor unit will be used to measure the outdoor
temperature.
As an option the remote outdoor sensor can be installed to measure the outdoor
temperature on another location (e.g. to avoid direct sunlight) to have an
improved system behaviour.
For installation instructions, see the installation manual of the remote outdoor
sensor and the addendum book for optional equipment.
Heat pump convector (FWXV)
For providing space heating, it is possible to use heat pump convectors (FWXV).
For installation instructions, see the installation manual of the heat pump
convectors, and the addendum book for optional equipment.
LAN adapter for smartphone control + Smart Grid applications (BRP069A61)
You can install this LAN adapter to:
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Installer reference guide
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6 | About the units and options
▪ Control the system via a smartphone app.
▪ Use the system in various Smart Grid applications.
For installation instructions, see the installation manual of the LAN adapter and the
addendum book for optional equipment.
LAN adapter for smartphone control (BRP069A62)
You can install this LAN adapter to control the system via a smartphone app.
For installation instructions, see the installation manual of the LAN adapter and the
addendum book for optional equipment.
Room thermostat (EKRTWA, EKRTR1)
You can connect an optional room thermostat to the gas boiler. This thermostat
can either be wired (EKRTWA) or wireless (EKRTR1).
For installation instructions, see the installation manual of the room thermostat
and the addendum book for optional equipment.
Remote sensor for wireless thermostat (EKRTETS)
You can use a wireless indoor temperature sensor (EKRTETS) only in combination
with the wireless thermostat (EKRTR1).
For installation instructions, see the installation manual of the room thermostat
and addendum book for optional equipment.
Bottom plate heater (EKBPHT04JH)
▪ Prevents freeze-up of the bottom plate.
▪ Required in areas with ambient temperature <–5°C and high relative humidity for
at least 3 consecutive days.
▪ For installation instructions, see the installation manual of the bottom plate
heater.
Shut-off valves (EKBALLV1)
We recommended to install shut-off valves to the space heating water connections
of the outdoor unit. They let you service the outdoor unit without draining the
whole system.
One of the two shut-off valves has an integrated connection for the vacuum
breaker (if applicable).
For installation instructions, see the installation manual of the shut-off valves.
Connection kit for third-party gas boiler (EKADDONJH+EKADDONJH2)
Required when connecting a third-party gas boiler to the system.
Consists of 2 separate kits that have to be used together:
Installer reference guide
30
▪ EKADDONJH: Contains the external pump
▪ EKADDONJH2: Contains the 2 non-return valves and 2 cables
For installation instructions, see the installation manual of the connection kit.
Domestic hot water tank
Only applicable in case of NHY2KOMB28+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:
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