Daikin NHY2KOMB28AA How to use

Installer reference guide
Daikin Altherma H Hybrid English
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Installer reference guide
Daikin Altherma H Hybrid
EJHA04AAV3
NHY2KOMB28AA
NHY2KOMB32AA

Table of contents
Installer reference guide
2
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
Table of contents
1 General safety precautions 3
1.1 About the documentation .......................................................... 3
1.1.1 Meaning of warnings and symbols.............................. 3
1.2 For the installer.......................................................................... 4
1.2.1 General ....................................................................... 4
1.2.2 Installation site ............................................................ 4
1.2.3 Refrigerant .................................................................. 5
1.2.4 Brine............................................................................ 5
1.2.5 Water .......................................................................... 6
1.2.6 Electrical ..................................................................... 6
1.2.7 Gas ............................................................................. 7
1.2.8 Gas exhaust................................................................ 7
1.2.9 Local legislation .......................................................... 7
2 About the product 8
3 About the documentation 8
3.1 About this document.................................................................. 8
3.2 Installer reference guide at a glance ......................................... 8
4 About the box 9
4.1 Overview: About the box ........................................................... 9
4.2 Outdoor unit............................................................................... 9
4.2.1 To unpack the outdoor unit ......................................... 9
4.2.2 To handle the outdoor unit.......................................... 9
4.2.3 To remove the accessories from the outdoor unit....... 9
4.3 Gas boiler .................................................................................. 9
4.3.1 To unpack the gas boiler............................................. 9
4.3.2 To remove the accessories from the gas boiler.......... 10
5 About the system 10
5.1 Possible system layouts ............................................................ 10
5.1.1 Dedicated gas boiler ................................................... 11
5.1.2 Third-party gas boiler .................................................. 11
5.2 Freeze protection ...................................................................... 12
5.2.1 Glycol or freeze protection valves............................... 12
5.2.2 Bottom plate heater..................................................... 12
6 About the units and options 12
6.1 Overview: About the units and options...................................... 12
6.2 Identification .............................................................................. 12
6.2.1 Identification label: Outdoor unit ................................. 12
6.2.2 Identification label: Gas boiler..................................... 12
6.3 Combining units and options ..................................................... 13
6.3.1 Possible combinations of outdoor unit, gas boiler and
domestic hot water tank .............................................. 13
6.3.2 Possible options for the outdoor unit........................... 13
6.3.3 Possible options for the gas boiler.............................. 14
7 Application guidelines 17
7.1 Overview: Application guidelines............................................... 17
7.2 Setting up the space heating system – In case of dedicated
gas boiler................................................................................... 17
7.2.1 Single room................................................................. 18
7.2.2 Multiple rooms – OneLWT zone ................................ 19
7.3 Setting up the space heating system – In case of third-party
gas boiler................................................................................... 21
7.3.1 Single room................................................................. 21
7.3.2 Multiple rooms – OneLWT zone ................................ 21
7.4 Setting up the domestic hot water tank ..................................... 22
7.4.1 System layout – Standalone DHW tank...................... 22
7.4.2 Selecting the volume and desired temperature for
the DHW tank.............................................................. 22
7.4.3 Setup and configuration – DHW tank.......................... 23
7.4.4 DHW pump for instant hot water................................. 23
7.4.5 DHW pump for disinfection ......................................... 23
7.5 Setting up the energy metering ................................................. 23
7.5.1 Consumed energy........................................................ 23
7.6 Setting up the power consumption control ................................. 24
7.6.1 Permanent power limitation ......................................... 24
7.7 Setting up an external temperature sensor ................................ 24
8 Preparation 24
8.1 Overview: Preparation................................................................ 24
8.2 Preparing the installation site ..................................................... 24
8.2.1 Installation site requirements of the outdoor unit ......... 25
8.2.2 Additional installation site requirements of the
outdoor unit in cold climates ........................................ 26
8.3 Preparing water piping ............................................................... 26
8.3.1 Water piping lengths and height difference ................. 26
8.3.2 Water circuit requirements ........................................... 27
8.3.3 Formula to calculate the expansion vessel pre-
pressure ....................................................................... 28
8.3.4 To check the water volume and flow rate .................... 28
8.3.5 Changing the pre-pressure of the expansion vessel.... 29
8.4 Preparing electrical wiring .......................................................... 29
8.4.1 About preparing electrical wiring.................................. 29
8.4.2 Overview of electrical connections except external
actuators ...................................................................... 29
8.4.3 Overview of electrical connections for external and
internal actuators ......................................................... 29
9 Installation 30
9.1 Overview: Installation ................................................................. 30
9.2 Opening the units ....................................................................... 30
9.2.1 About opening the units ............................................... 30
9.2.2 To open the outdoor unit.............................................. 30
9.2.3 To open the gas boiler ................................................. 31
9.2.4 To open the switch box cover of the gas boiler............ 31
9.3 Mounting the outdoor unit........................................................... 31
9.3.1 About mounting the outdoor unit.................................. 31
9.3.2 Precautions when mounting the outdoor unit............... 31
9.3.3 To provide the installation structure ............................. 31
9.3.4 To install the outdoor unit............................................. 32
9.3.5 To provide drainage ..................................................... 32
9.3.6 To prevent the outdoor unit from falling over ............... 33
9.4 Mounting the gas boiler .............................................................. 33
9.4.1 To install the gas boiler ................................................ 33
9.4.2 To install the condensate trap...................................... 34
9.5 Condensate pipe work................................................................ 34
9.5.1 Internal connections..................................................... 34
9.5.2 External connections.................................................... 35
9.6 Connecting the water piping....................................................... 35
9.6.1 About connecting the water piping............................... 35
9.6.2 Precautions when connecting the water piping............ 35
9.6.3 Connecting the water piping of the outdoor unit .......... 35
9.6.4 Connecting the water piping of the gas boiler.............. 36
9.6.5 To protect the water circuit against freezing ................ 37
9.6.6 To fill the space heating circuit..................................... 39
9.6.7 To fill the domestic water circuit of the gas boiler ........ 40
9.6.8 To fill the domestic hot water tank ............................... 40
9.6.9 To insulate the water piping ......................................... 40
9.7 Connecting the electrical wiring.................................................. 40
9.7.1 About connecting the electrical wiring.......................... 40
9.7.2 Precautions when connecting the electrical wiring ...... 41
9.7.3 Guidelines when connecting the electrical wiring ........ 41
9.7.4 In case of dedicated gas boiler .................................... 42
9.7.5 In case of third-party gas boiler.................................... 44
9.8 Connecting the gas piping.......................................................... 46
9.8.1 To connect the gas pipe............................................... 46
9.9 Connecting the boiler to the flue gas system ............................. 47
9.9.1 To change the gas boiler to 80/125 concentric
connection.................................................................... 47
9.9.2 To change the 60/100 concentric connection to a
dual pipe connection .................................................... 47
9.9.3 Calculate the total piping length................................... 48
9.9.4 Appliance categories and pipe lengths ........................ 48
9.9.5 Applicable materials..................................................... 51

1 General safety precautions
Installer reference guide
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EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
9.9.6 Flue pipe position........................................................ 51
9.9.7 Insulation of the gas exhaust and air intake................ 52
9.9.8 Fitting a horizontal flue system ................................... 52
9.9.9 Fitting a vertical flue system........................................ 52
9.9.10 Plume management kit ............................................... 52
9.9.11 Flues in voids .............................................................. 53
9.9.12 Flue gas materials (C63) available on the market ...... 53
9.9.13 About securing the flue system................................... 53
9.10 Finishing the outdoor unit installation ........................................ 55
9.10.1 To close the outdoor unit ............................................ 55
9.11 Finishing the gas boiler installation ........................................... 55
9.11.1 To perform an air purge on the gas supply ................. 55
9.11.2 To close the gas boiler................................................ 55
9.11.3 To install the cover plate ............................................. 55
10 Configuration 56
10.1 Outdoor unit............................................................................... 56
10.1.1 Overview: Configuration.............................................. 56
10.1.2 Basic configuration...................................................... 57
10.1.3 Advanced configuration/optimization .......................... 62
10.1.4 Menu structure: Overview user settings...................... 70
10.1.5 Menu structure: Overview installer settings ................ 71
10.2 Gas boiler .................................................................................. 72
10.2.1 Overview: Configuration.............................................. 72
10.2.2 Basic configuration...................................................... 72
11 Operation 77
11.1 Overview: Operation.................................................................. 77
11.2 Heating ...................................................................................... 77
11.3 Domestic hot water.................................................................... 77
11.3.1 Flow resistance graph for appliance domestic hot
water circuit................................................................. 77
11.4 Operation modes....................................................................... 77
12 Commissioning 78
12.1 Overview: Commissioning ......................................................... 78
12.2 Precautions when commissioning ............................................. 78
12.3 Checklist before commissioning ................................................ 78
12.4 Checklist during commissioning ................................................ 79
12.4.1 Air purge function........................................................ 79
12.4.2 To perform a test run .................................................. 80
12.4.3 To perform an actuator test run .................................. 80
12.4.4 Underfloor heating screed dryout................................ 80
12.4.5 To perform a gas pressure test................................... 82
12.4.6 To perform a test run on the gas boiler....................... 82
13 Hand-over to the user 82
14 Maintenance and service 82
14.1 Overview: Maintenance and service ......................................... 82
14.2 Maintenance safety precautions................................................ 82
14.3 Outdoor unit............................................................................... 83
14.3.1 Opening the outdoor unit ............................................ 83
14.3.2 Checklist for yearly maintenance of the outdoor unit .. 83
14.4 Gas boiler .................................................................................. 84
14.4.1 Opening the gas boiler................................................ 84
14.4.2 To disassemble the gas boiler .................................... 84
14.4.3 To clean the inside of the gas boiler ........................... 85
14.4.4 To assemble the gas boiler......................................... 85
15 Troubleshooting 86
15.1 Overview: Troubleshooting........................................................ 86
15.2 Precautions when troubleshooting ............................................ 86
15.3 General guidelines .................................................................... 86
15.4 Solving problems based on symptoms...................................... 86
15.4.1 Symptom: The unit is NOT heating as expected ........ 86
15.4.2 Symptom: The compressor does NOT start (space
heating or domestic water heating)............................. 87
15.4.3 Symptom: The pump is making noise (cavitation) ...... 87
15.4.4 Symptom: The pressure relief valve opens................. 87
15.4.5 Symptom: The water pressure relief valve leaks ........ 87
15.4.6 Symptom: The space is NOT sufficiently heated at
low outdoor temperatures ............................................ 88
15.4.7 Symptom: The pressure at the tapping point is
temporarily unusually high ........................................... 88
15.4.8 Symptom: Tank disinfection function is NOT
completed correctly (AH-error)..................................... 88
15.4.9 Symptom: Boiler abnormality detection (HJ-11 error).. 88
15.4.10 Symptom: Boiler/hydrobox combination abnormality
(UA-52 error)................................................................ 88
15.4.11 Symptom: The burner does NOT ignite ....................... 88
15.4.12 Symptom: The burner ignites noisily............................ 88
15.4.13 Symptom: The burner resonates ................................. 89
15.4.14 Symptom: No space heating by the gas boiler ............ 89
15.4.15 Symptom: The power is reduced ................................. 89
15.4.16 Symptom: Space heating does NOT reach the
temperature.................................................................. 89
15.4.17 Symptom: No domestic hot water ................................ 89
15.4.18 Symptom: Hot water does NOT reach the
temperature (no tank installed) .................................... 89
15.4.19 Symptom: Hot water does NOT reach the
temperature (tank installed) ......................................... 89
15.5 Solving problems based on LED behaviour ............................... 90
15.5.1 Location of the outdoor unit LED ................................. 90
15.5.2 To diagnose faults........................................................ 90
15.6 Solving problems based on error codes ..................................... 90
15.6.1 Error codes: Overview ................................................. 90
16 Disposal 93
16.1 Overview: Disposal..................................................................... 93
16.2 To pump down............................................................................ 93
17 Technical data 94
17.1 Outdoor unit................................................................................ 94
17.1.1 Piping diagram: Outdoor unit ....................................... 94
17.1.2 Wiring diagram: Outdoor unit ....................................... 95
17.1.3 ESP curve: Outdoor unit .............................................. 98
17.2 Gas boiler ................................................................................... 99
17.2.1 Components: Gas boiler .............................................. 99
17.2.2 Wiring diagram: Gas boiler .......................................... 99
17.2.3 Technical specifications: Gas boiler.............................100
18 Glossary 105
19 Field settings table 107
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.

1 General safety precautions
Installer reference guide
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EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
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.
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.
INFORMATION
Indicates useful tips or additional information.
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.
1.2 For the installer
1.2.1 General
If you are NOT sure how to install or operate the unit, contact your
dealer.
NOTICE
Improper installation or attachment of equipment or
accessories could result in electric shock, short-circuit,
leaks, fire or other damage to the equipment. Only use
accessories, optional equipment and spare parts made or
approved by Daikin.
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.
WARNING
Tear apart and throw away plastic packaging bags so that
nobody, especially children, can play with them. Possible
risk: suffocation.
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
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.
NOTICE
▪ 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.
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).
1.2.2 Installation site
▪ 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.
▪ 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.

1 General safety precautions
Installer reference guide
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EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
▪ Store flammable fluids and materials at least 1meter 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.
▪ Toxic gas may be produced if refrigerant gas comes
into contact with fire.
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:
Self-combustion 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.
▪ 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
(i.e., the cylinder is marked with
"Liquid filling siphon attached")
Charge with the cylinder upright.
A siphon tube is NOT present 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.
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.
1.2.4 Brine
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.
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.

1 General safety precautions
Installer reference guide
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EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
WARNING
The use and installation of the application MUST comply
with the safety and environmental precautions specified in
the applicable legislation.
1.2.5 Water
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
98/83EC.
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
(>3 mmol/l–sum of the calcium and magnesium concentrations,
calculated as calcium carbonate).
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.
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 1 minute,
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 category III
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 electric 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.
CAUTION
When connecting the power supply, the earth connection
must be made before the current-carrying connections are
established. When disconnecting the power supply, the
current-carrying connections must be separated before the
earth connection is. 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.
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metre away from televisions or radios
to prevent interference. Depending on the radio waves, a distance of
1metre may not be sufficient.

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Installer reference guide
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EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
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.
1.2.7 Gas
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.
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 22mm.
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.
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.
1.2.8 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.
It is NOT allowed to combine flue system parts purchased from
different suppliers.
1.2.9 Local legislation
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:
▪ BS 5440-1: 2008 Flueing and ventilation for gas appliances of
rated input not exceeding 70 kW net (1st, 2nd and 3rd family
gases)
▪ BS 5440-2: 2009 Flueing and ventilation for gas appliances of
rated input not exceeding 70 kW 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
70kW net
▪ 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 70kW net
▪ BS 6891: 2015 Specification for the installation and maintenance
of low pressure gas installation pipework of up to 35mm (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.

2 About the product
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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.
a
aGas boiler module
INFORMATION
This product is intended for domestic use only.
3 About the documentation
3.1 About this document
INFORMATION
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.
Target audience
Authorised installers
Documentation set
This document is part of a documentation set. The complete set
consists of:
▪General safety precautions:
▪ Safety instructions that you must read before installing
▪ Format: Paper (in the box of the 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:
▪ 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.
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
extranet (authentication required).
3.2 Installer reference guide at a
glance
Chapter Description
General safety
precautions
Safety instructions that you must read
before installing
About the product Required combination of heat pump
module and gas boiler module
About the documentation What documentation exists for the
installer
About the box How to unpack the units and remove
their 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

4 About the box
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Chapter Description
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
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.
4 About the box
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
1 2
4.2.2 To handle the outdoor unit
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:
Carry the unit slowly as shown:
4.2.3 To remove the accessories from the
outdoor unit
1Lift the outdoor unit. See "4.2.2To handle the outdoor unit"on
page9.
2Remove the accessories at the bottom of the package.
1×
2×
1× 1× 1× 1×
ENERG IJAY
IAIE
ENERG IJAY
IAIE
1×
j
ihd e f g
1× 1× 1×
a b c
aConnection piece (with O-ring) for freeze protection valve
inside the outdoor unit
bFreeze protection valve (for inside the outdoor unit)
cVacuum breaker (for outside the outdoor unit)
dGeneral safety precautions
eAddendum book for optional equipment
fOutdoor unit installation manual
gOperation manual
hEnergy label
iCable gland
jDrain plug
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.

5 About the system
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1
2
WARNING
Tear apart and throw away plastic packaging bags so that
nobody, especially children, can play with them. Possible
risk: suffocation.
4.3.2 To remove the accessories from the gas
boiler
1Remove the accessories.
a
b
c d
a b c d
aMounting strip
bCondensate trap
cInstallation and operation manual
dCurrent loop module, cable and installation manual
5 About the system
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:
Gas boiler System layout
Dedicated gas boiler
(=NHY2KOMB28+32AA)
a
c
b

5 About the system
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Gas boiler System layout
Third-party gas boiler
d2
d1
d2
b
a
c
aOutdoor unit
bGas boiler
cSpace heating circuit
d1+d2 Parts of mandatory options EKADDONJH and
EKADDONJH2 (= connection kit for third-party gas boiler):
d1: External pump (EKADDONJH)
d2: Non-return valve (EKADDONJH2)
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 c
b
d
65°C
95°C95°C
aOutdoor unit
bGas boiler
cSpace heating circuit
dInstant domestic hot water
Dedicated gas boiler + Domestic hot water via tank
a b c
e
d
M95°C95°C
89°C
aOutdoor unit
bGas boiler
cSpace heating circuit
dDomestic hot water via tank
eMotorised 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
e5
≤10 m
e1
e4
e2
e3
f1 f2
f3
f4
f5
a
b
c
d
e5
aOutdoor unit
bGas boiler
cSpace heating circuit
dInstant 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)
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
≥Tmin.
0
–30 –25 –20 –15 –10 –5 0 5
20
30
40
50
60
10
Ta(°C)
Tmin (°C)
TaOutdoor temperature
Tmin Minimum weather-dependent setpoint for third-party gas
boiler

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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.
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 "9.6.5 To protect the water circuit against
freezing"on page37.
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.
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.
6.2.1 Identification label: Outdoor unit
Location
Model identification
Example: EJHA04AAV3
Code Explanation
EJ Hybrid monobloc outdoor pair heating only
H Low water temperature – ambient zone 3 (see
operation range)
A Refrigerant R32
04 Capacity class
AA Model series
V3 Power supply
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

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Unit detail Description
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
Unit detail Description
DE, FR, GB, IT, NL Countries of Destination
(EN437)
I2E(s), I2H, IIELL3P, II2H3P,
II2Esi3P
Approved unit categories
(EN437)
G20-20mbar
G25-25mbar
Gas group and gas connection
pressure as set at the factory
(EN437)
B23, …., C93(x) Approved flue gas category
(EN15502)
Tmax Maximum flow temperature in °C
IPX4D Electrical protection class
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 NHY2KOMB28AA
NHY2KOMB32AA
EKHWS*D* Domestic hot water by tank.
Tank heated:
▪ By outdoor unit only, or
▪ By gas boiler only(a)
▪ By outdoor unit only, or
▪ By gas boiler only, or
▪ By combination of outdoor unit and
gas boiler
EKHWP
Third-party(b)
— 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
Third-party — Instant domestic hot water by gas boiler ▪ By outdoor unit only, or
▪ By gas boiler only (bivalent operation)
(a) Maximum tank set point is 60°C
(b) Third-party tank is possible, but comfort cannot be guaranteed. See the minimum requirements for third-party tanks in "8.3.2Water circuit
requirements"on page27.
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"on
page43.
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:
▪ 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.

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▪ 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:
▪ 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:
Tank Remark
Stainless steel tank:
▪ EKHWS150D3V3
▪ EKHWS180D3V3
▪ EKHWS200D3V3
▪ EKHWS250D3V3
▪ EKHWS300D3V3
When using this tank:
▪ Use the tank thermistor from
the following option kit: EKTH3
▪ Use the 3-way valve delivered
as accessory with the tank
Polypropylene tank (with
drainback solar):
▪ EKHWP300B
▪ EKHWP500B
When using this tank:
▪ Use the tank thermistor from
the following option kit: EKTH4
▪ Use the 3-way valve from the
following option kit:
EKDVCPLT3HX
Polypropylene tank (with
pressurised solar):
▪ EKHWP300PB
▪ EKHWP500PB
Tank Remark
Third-party tank When using a third-party tank:
▪ Make sure it complies with the
minimum requirements. See
"6.3.1 Possible combinations
of outdoor unit, gas boiler and
domestic hot water tank" on
page13.
▪ Use the tank thermistor from
the following option kit: EKTH3
▪ Use the 3-way valve from the
following option kit:
EKHY3PART
For installation instructions, see the installation manual of the
domestic hot water tank and the addendum book for optional
equipment.
Thermistor kit for EKHWS*D* or third-party tank (EKTH3)
Required when connecting one of the following tanks to the system:
▪ EKHWS*D* tank
▪ Third-party tank
For installation instructions, see the installation manual of the
thermistor kit.
Thermistor kit for EKHWP tank (EKTH4)
Required when connecting a EKHWP tank to the system.
For installation instructions, see the installation manual of the
thermistor kit.
Connection kit for third‑party tank (EKHY3PART)
Required when connecting a third-party tank to the system.
Contains a thermistor and a 3-way valve. However, only use the 3-
way valve from this kit. Do NOT use the thermistor, use the
thermistor from the EKTH3 instead.
For installation instructions, see the installation manual of the
connection kit and the addendum book for optional equipment.
PC cable (EKPCCAB)
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.
For installation instructions, see the installation manual of the PC
cable.
The software and corresponding operating instructions are available
on http://www.daikineurope.com/support-and-manuals/software-
downloads/.
Freeze protection valves (AFVALVEHY2)
Protects field piping from freezing and bursting.
Includes a vacuum breaker (head-up for air supply) and a freeze
protection valve (for water drainage).
For installation instructions, see "9.6.5 To protect the water circuit
against freezing"on page37.
6.3.3 Possible options for the gas boiler
Main options
Part NHY2KOMB28AA NHY2KOMB32AA
Boiler cover plate
Cover plate to protect the piping and valves of the gas boiler. For installation instructions, see
the installation manual of the cover plate(*).
EKHY093467
EKCP1A
Gas conversion kit G25
Kit for the conversion of the gas boiler for use with gas type G25. EKPS076217 EKPS076227

6 About the units and options
Installer reference guide
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Part NHY2KOMB28AA NHY2KOMB32AA
Gas conversion kit G31
Kit for the conversion of the gas boiler for use with gas type G31 EKHY075867 EKHY075787
Dual pipe conversion kit
Kit for the conversion of a concentric flue gas system to a dual pipe system. For installation
instructions, see the installation manual of the dual pipe conversion kit
EKHY090707
80/125 concentric connection kit
Kit for the conversion of 60/100 concentric flue gas connections to 80/125 concentric flue gas
connections. For installation instructions, see the installation manual of the concentric
connection kit.
EKHY090717
B-packs
An integrated solution for expansion vessel to make filling easier. Required installation space
is limited(*).
EKFJM1A
EKFJM2A
EKFJM3A
EKFJM6A
EKFJL1A
EKFJL2A
EKFJL3A
EKFJL6A
Valve kit
To easier connect pipes and valves. For installation instruction, see the manual of the kit. EKVK4A
EKVK6A
Filling loop set
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
To set up wireless communication between the gas boiler and a computer EKDS1A
(*) The boiler cover plate cannot be used with B-packs.
Other options
Accessories Part number Description
EKFGP6837 Roof terminal PP/GLV 60/100
AR460
EKFGS0518 Weather slate steep Pb/GLV
60/100 18°-22°
EKFGS0519 Weather slate steep Pb/GLV
60/100 23°-17°
EKFGP7910 Weather slate steep PF 60/100
25°-45°
EKFGS0523 Weather slate steep Pb/GLV
60/100 43°-47°
EKFGS0524 Weather slate steep Pb/GLV
60/100 48°-52°
EKFGS0525 Weather slate steep Pb/GLV
60/100 53°-57°
EKFGP1296 Weather slate flat Aluminium
60/100 0°-15°
EKFGP6940 Weather slate flat Aluminium
60/100
EKFGP2978 Wall terminal kit PP/GLV
60/100
EKFGP2977 Wall terminal kit low profile PP/
GLV 60/100
EKFGP4651 Extension PP/GLV
60/100×500mm
EKFGP4652 Extension PP/GLV
60/100×1000mm
Accessories Part number Description
EKFGP4664 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
EKFGP1292 Wall terminal Kit PP/GLV
60/100
EKFGP1293 Wall terminal kit low profile PP/
GLV 60/100
EKFGP1294 Plume management kit 60 (UK
only)
EKFGP1295 Flue deflector 60 (UK only)
EKFGP1284 PMK elbow 60 90 (UK only)
EKFGP1285 PMK elbow 60 45° (2pieces)
(UK only)
EKFGP1286 PMK extension 60 L=1000
includes bracket (UK only)
EKFGW5333 Weather slate flat aluminium
80/125

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Installer reference guide
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Accessories Part number Description
EKFGW6359 Wall terminal kit PP/GLV
80/125
EKFGP4801 Extension PP/GLV
80/125×500mm
EKFGP4802 Extension PP/GLV
80/125×1000mm
EKFGP4814 Elbow PP/GLV 80/125 30°
EKFGP4811 Elbow PP/ALU 80/125 45°
EKFGP4810 Elbow PP/ALU 80/125 90°
EKFGP4820 Inspection elbow Plus PP/ALU
80/125 90° EPDM
EKFGP6864 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
EKFGT6305 Weather slate steep Pb/GLV
80/125 43°-47°
EKFGT6306 Weather slate steep Pb/GLV
80/125 48°-52°
EKFGT6307 Weather slate steep Pb/GLV
80/125 53°-57°
EKFGP1297 Weather slate flat aluminium
80/125 0°-15°
EKFGP6368 Tee flex 100 boiler connection
set 1
EKFGP6354 Flex 100-60 + support elbow
EKFGP6215 Tee flex 130 boiler connection
set 1
EKFGS0257 Flex 130-60 + support elbow
EKFGP4678 Chimney connection 60/100
Accessories Part number Description
EKFGP5461 Extension PP 60×500
EKFGP5497 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
EKFGP6347 Extension flex PP100 L=25m
EKFGP6325 Connector flex-flex PP100
EKFGP5197 Chimney top PP 130 with
included flue pipe
EKFGS0252 Adapter flex-fixed PP130
EKFGP6353 Support bracket top inox Ø130
EKFGS0250 Extension flex PP130 L=130m
EKFGP6366 Connector flex-flex PP130
EKFGP1856 Flex kit PPØ60-80
EKFGP4678 Chimney connection 60/100
EKFGP2520 Flex kit PP Ø80

7 Application guidelines
Installer reference guide
17
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Daikin Altherma H Hybrid
4P556861-1A – 2019.05
Accessories Part number Description
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
EKFGP6342 Extension Flex PP80 L=50m
EKFGP6324 Connector-flex-flex PP80
EKFGP6333 Spacer PP80-100
EKFGP4481 Fixation Ø100
EKFGV1101 Chimney connection 60/10
airintake Dn.80 C83
EKFGV1102 Connection set 60/10-60 Flue/
Air intake Dn.80 C53
EKFGW4001 ExtensionPBM-Air 80×500
EKFGW4002 ExtensionPBM-Air 80×1000
EKFGW4004 ExtensionPBM-Air 80×2000
EKFGW4085 ElbowPPBM-Air8090°
EKFGW4086 ElbowPPBM-Air8045°
EKGFP1289 ElbowPP/GALV 60/100 50°
EKGFP1299 Kit horizontal low profile PP/
GLV 60/100 (UK only)
INFORMATION
For extra configuration options regarding the flue gas
system, visit http://fluegas.daikin.eu/.
INFORMATION
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.
7 Application guidelines
7.1 Overview: Application guidelines
The purpose of the application guidelines is to give a glance of the
possibilities of the heatpump system.
NOTICE
▪ The illustrations in the application guidelines are meant
for reference only, and are NOT to be used as detailed
hydraulic diagrams. The detailed hydraulic
dimensioning and balancing are NOT shown, and are
the responsibility of the installer.
▪ For more information about the configuration settings to
optimize heat pump operation, see
"10Configuration"on page56.
This chapter contains application guidelines for:
▪ Setting up the space heating system
▪ Setting up the domestic hot water tank
▪ Setting up the energy metering
▪ Setting up the power consumption control
▪ Setting up an external temperature sensor
7.2 Setting up the space heating
system – In case of dedicated gas
boiler
The heatpump system supplies leaving water to heat emitters in one
or more rooms.
Because the system offers a wide flexibility to control the
temperature in each room, you need to answer the following
questions first:
▪ 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?
Once the space heating requirements are clear, Daikin recommends
to follow the setup guidelines below.
NOTICE
If an external room thermostat is used, the external room
thermostat will control the room frost protection. However,
the room frost protection is only possible if the leaving
water temperature control on the unit's user interface is
turned ON.
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.

7 Application guidelines
Installer reference guide
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4P556861-1A – 2019.05
7.2.1 Single room
Underfloor heating or radiators – Wired room
thermostat
Setup
A
B
a
AMain leaving water temperature zone
BOne single room
aUser interface used as room thermostat
▪ The outdoor unit is connected in series with the gas boiler.
▪ The underfloor heating or radiators are directly connected to the
gas boiler.
▪ The room temperature is controlled by the user interface, which is
used as room thermostat.
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
Benefits
▪Cost effective. You do NOT need an additional external room
thermostat.
▪Highest comfort and efficiency. The smart room thermostat
functionality can decrease or increase the desired leaving water
temperature based on the actual room temperature (modulation).
This results in:
▪ Stable room temperature matching the desired temperature
(higher comfort)
▪ Less ON/OFF cycles (more quiet, higher comfort and higher
efficiency)
▪ Lowest possible leaving water temperature (higher efficiency)
▪Easy. You can easily set the desired room temperature via the
user interface:
▪ 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.
Underfloor heating or radiators – Wireless room
thermostat
Setup
A
B
b
ca
AMain leaving water temperature zone
BOne single room
aUser interface
bReceiver for wireless external room thermostat
cWireless external room thermostat
▪ The outdoor unit is connected in series with the gas boiler.
▪ The underfloor heating or radiators are directly connected to the
gas boiler.
▪ The room temperature is controlled by the wireless external room
thermostat (optional equipment EKRTR1).
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
1 (Ext RT control): Unit
operation is decided by the
external thermostat.
External room thermostat for the
main zone:
▪ #: [A.2.2.4]
▪ Code: [C-05]
1 (Thermo ON/OFF): When the
used external room thermostat or
heatpump convector can only
send a thermo ON/OFF
condition.
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
Setup
a
A
B
b
AMain leaving water temperature zone
BOne single room
aUser interface
bRemote controller of the heatpump convectors
▪ The outdoor unit is connected in series with the gas boiler.
▪ 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.

7 Application guidelines
Installer reference guide
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4P556861-1A – 2019.05
▪ The space heating demand signal is sent to one digital input on
the gas boiler (X4/6 and X4/7).
INFORMATION
When using multiple heat pump convectors, make sure
each one receives the infrared signal from the remote
controller of the heatpump convectors.
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
1 (Ext RT control): Unit
operation is decided by the
external thermostat.
External room thermostat for the
main zone:
▪ #: [A.2.2.4]
▪ Code: [C-05]
1 (Thermo ON/OFF): When the
used external room thermostat or
heatpump convector can only
send a thermo ON/OFF
condition.
Benefits
▪Efficiency. Optimal energy efficiency because of the interlink
function.
▪Stylish.
Combination: Underfloor heating + Heatpump
convectors
▪ Space heating is provided by:
▪ The underfloor heating
▪ The heatpump convectors
Setup
A
a
B
b
AMain leaving water temperature zone
BOne single room
aUser interface
bRemote controller of the heatpump convectors
▪ The outdoor unit is connected in series with the gas boiler.
▪ 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.
▪ The space heating demand signal is sent to one digital input on
the gas boiler (X4/6 and X4/7).
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
1 (Ext RT control): Unit
operation is decided by the
external thermostat.
External room thermostat for the
main zone:
▪ #: [A.2.2.4]
▪ Code: [C-05]
1 (Thermo ON/OFF): When the
used external room thermostat or
heatpump convector can only
send a thermo ON/OFF
condition.
Benefits
▪Efficiency. Underfloor heating has the best performance with the
heat pump system.
▪Comfort. The combination of the two heat emitter types provides
excellent heating comfort of the underfloor heating.
7.2.2 Multiple rooms – OneLWT zone
If only one leaving water temperature zone is needed because the
design leaving water temperature of all heat emitters is the same,
you do NOT need a mixing valve station (cost effective).
Example: If the heat pump system is used to heat up one floor
where all the rooms have the same heat emitters.
Underfloor heating or radiators – Thermostatic
valves
If you are heating up rooms with underfloor heating or radiators, a
very common way is to control the temperature of the main room by
using a thermostat (this can either be the user interface or an
external room thermostat), while the other rooms are controlled by
so-called thermostatic valves, which open or close depending on the
room temperature.
Setup
A
B
a
C
T
AMain leaving water temperature zone
BRoom 1
CRoom 2
aUser interface
▪ The outdoor unit is connected in series with the gas boiler.
▪ 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.
▪ A thermostatic valve is installed before the underfloor heating in
each of the other rooms.
INFORMATION
Mind situations where the main room can be heated by
another heating source. Example: Fireplaces.
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
Benefits
▪Cost effective. You do NOT need an additional external room
thermostat.
▪Easy. Same installation as for one room, but with thermostatic
valves.

7 Application guidelines
Installer reference guide
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4P556861-1A – 2019.05
Underfloor heating or radiators – Multiple external
room thermostats
Setup
a
c
B C
A
b b
M1 M2
AMain leaving water temperature zone
BRoom 1
CRoom 2
aUser interface
bExternal room thermostat
cBypass valve
▪ For each room, a shut-off valve (field supplied) is installed to avoid
leaving water supply when there is no heating demand.
▪ A bypass valve must be installed to make water recirculation
possible when all shut-off valves are closed. To guarantee reliable
operation, provide a minimum water flow as described in table "To
check the water volume and flow rate" in "8.3 Preparing water
piping"on page26.
▪ The room thermostats are connected to the shut-off valves, and
do NOT have to be connected to the outdoor unit. The outdoor
unit will supply leaving water all the time, with the possibility to
program a leaving water schedule.
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
0 (LWT control): Unit operation
is decided based on the leaving
water temperature.
Benefits
Compared with underfloor heating or radiators for one room:
▪Comfort. You can set the desired room temperature, including
schedules, for each room via the room thermostats.
Heatpump convectors – Multiple rooms
Setup
B
A
b b
C
a
AMain leaving water temperature zone
BRoom 1
CRoom 2
aUser interface
bRemote controller of the heatpump convectors
▪ The desired room temperature is set via the remote controller of
the heatpump convectors.
▪ The heating demand signals of each heat pump convector are
connected in parallel to the digital input on the gas boiler (X4/6
and X4/7). The outdoor unit will only supply leaving water
temperature when there is an actual demand.
INFORMATION
To increase comfort and performance, we recommend to
install the valve kit option EKVKHPC on each heat pump
convector.
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
1 (Ext RT control): Unit
operation is decided by the
external thermostat.
Benefits
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.
Combination: Underfloor heating + Heatpump
convectors – Multiple rooms
Setup
c
B C
A
b
M1
a
AMain leaving water temperature zone
BRoom 1
CRoom 2
aUser interface
bExternal room thermostat
cRemote controller of the heatpump convectors
▪ The outdoor unit is connected in series with the gas boiler.
▪ For each room with heat pump convectors: The heat pump
convectors are directly connected to the gas boiler.
▪ For each room with underfloor heating: A shut-off valve (field
supply) is installed before the underfloor heating. It prevents hot
water supply when the room has no heating demand.
▪ For each room with heat pump convectors: The desired room
temperature is set via the remote controller of the heat pump
convectors.
▪ For each room with underfloor heating: The desired room
temperature is set via the external room thermostat (wired or
wireless).
INFORMATION
To increase comfort and performance, we recommend to
install the valve kit option EKVKHPC on each heat pump
convector.