Daikin Altherma EHYHBH05A Series How to use

Installer reference guide
Daikin Altherma hybrid heat pump
EVLQ05+08CA
EHYHBH05A▲
EHYHBH/X08A▲
EHYKOMB33AA
▲= A, B, C, …, Z
+

Table of contents
Installer reference guide
2
EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
Table of contents
1 About the product 6
2 About this document 8
2.1 Meaning of warnings and symbols................................................................................................................................. 8
2.2 Installer reference guide at a glance .............................................................................................................................. 10
3 General safety precautions 12
3.1 For the installer............................................................................................................................................................... 12
3.1.1 General ........................................................................................................................................................... 12
3.1.2 Installation site ............................................................................................................................................... 13
3.1.3 Refrigerant — in case of R410A or R32.......................................................................................................... 14
3.1.4 Water .............................................................................................................................................................. 16
3.1.5 Electrical ......................................................................................................................................................... 16
3.1.6 Gas .................................................................................................................................................................. 18
3.1.7 Gas exhaust..................................................................................................................................................... 19
3.1.8 Local legislation .............................................................................................................................................. 19
4 Specific installer safety instructions 21
5 About the box 28
5.1 Outdoor unit ................................................................................................................................................................... 28
5.1.1 To unpack the outdoor unit ........................................................................................................................... 28
5.1.2 To remove the accessories from the outdoor unit........................................................................................ 29
5.2 Indoor unit ...................................................................................................................................................................... 30
5.2.1 To unpack the indoor unit.............................................................................................................................. 30
5.2.2 To remove the accessories from the indoor unit .......................................................................................... 31
5.3 Gas boiler ........................................................................................................................................................................ 31
5.3.1 To unpack the gas boiler ................................................................................................................................ 31
5.3.2 To remove the accessories from the gas boiler............................................................................................. 32
6 About the units and options 34
6.1 Identification ................................................................................................................................................................... 34
6.1.1 Identification label: Outdoor unit .................................................................................................................. 34
6.1.2 Identification label: Indoor unit ..................................................................................................................... 35
6.1.3 Identification label: Gas boiler ....................................................................................................................... 35
6.2 Combining units and options.......................................................................................................................................... 37
6.2.1 Possible options for the outdoor unit............................................................................................................ 37
6.2.2 Possible options for the indoor unit............................................................................................................... 38
6.2.3 Possible options for the gas boiler................................................................................................................. 41
6.2.4 Possible combinations of indoor unit and outdoor unit................................................................................ 46
6.2.5 Possible combinations of indoor unit and domestic hot water tank ............................................................ 47
7 Unit installation 48
7.1 Preparing the installation site......................................................................................................................................... 48
7.1.1 Installation site requirements of the outdoor unit........................................................................................ 49
7.1.2 Additional installation site requirements of the outdoor unit in cold climates............................................ 50
7.1.3 Installation site requirements of the indoor unit .......................................................................................... 51
7.2 Opening and closing the units ........................................................................................................................................ 52
7.2.1 About opening the units................................................................................................................................. 52
7.2.2 To open the outdoor unit............................................................................................................................... 52
7.2.3 To open the switch box cover of the indoor unit .......................................................................................... 53
7.2.4 To open the gas boiler.................................................................................................................................... 54
7.2.5 To open the switch box cover of the gas boiler............................................................................................. 54
7.2.6 To close the outdoor unit............................................................................................................................... 55
7.2.7 To close the indoor unit ................................................................................................................................. 55
7.2.8 To close the gas boiler.................................................................................................................................... 55
7.2.9 To install the gas boiler cover plate ............................................................................................................... 56
7.3 Mounting the outdoor unit............................................................................................................................................. 56
7.3.1 About mounting the outdoor unit ................................................................................................................. 56
7.3.2 Precautions when mounting the outdoor unit.............................................................................................. 57
7.3.3 To provide the installation structure ............................................................................................................. 57
7.3.4 To install the outdoor unit ............................................................................................................................. 59
7.3.5 To provide drainage........................................................................................................................................ 60
7.3.6 To prevent the outdoor unit from falling over .............................................................................................. 61
7.4 Mounting the indoor unit ............................................................................................................................................... 62
7.4.1 About mounting the indoor unit.................................................................................................................... 62

Table of contents
Installer reference guide
3
EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
7.4.2 Precautions when mounting the indoor unit................................................................................................. 62
7.4.3 To install the indoor unit ................................................................................................................................ 62
7.5 Mounting the gas boiler.................................................................................................................................................. 63
7.5.1 To install the gas boiler .................................................................................................................................. 63
7.5.2 To install the condensate trap ....................................................................................................................... 65
7.6 Connecting the boiler to the flue gas system................................................................................................................. 66
7.6.1 To change the gas boiler to 80/125 concentric connection.......................................................................... 67
7.6.2 To change the 60/100 concentric connection to a dual pipe connection .................................................... 68
7.6.3 Calculate the total piping length.................................................................................................................... 69
7.6.4 Appliance categories and pipe lengths .......................................................................................................... 70
7.6.5 Applicable materials ....................................................................................................................................... 74
7.6.6 Flue pipe position ........................................................................................................................................... 75
7.6.7 Insulation of the gas exhaust and air intake .................................................................................................. 76
7.6.8 Fitting a horizontal flue system...................................................................................................................... 76
7.6.9 Fitting a vertical flue system .......................................................................................................................... 77
7.6.10 Plume management kit .................................................................................................................................. 77
7.6.11 Flues in voids .................................................................................................................................................. 78
7.6.12 Flue gas materials (C63) available on the market.......................................................................................... 79
7.6.13 About securing the flue system ..................................................................................................................... 80
7.7 Condensate pipe work .................................................................................................................................................... 81
7.7.1 Internal connections....................................................................................................................................... 82
7.7.2 External connections ...................................................................................................................................... 83
8 Piping installation 84
8.1 Preparing refrigerant piping ........................................................................................................................................... 84
8.1.1 Refrigerant piping requirements.................................................................................................................... 84
8.1.2 Refrigerant piping insulation.......................................................................................................................... 85
8.2 Connecting the refrigerant piping .................................................................................................................................. 85
8.2.1 About connecting the refrigerant piping ....................................................................................................... 85
8.2.2 Precautions when connecting the refrigerant piping.................................................................................... 86
8.2.3 Guidelines when connecting the refrigerant piping...................................................................................... 87
8.2.4 Pipe bending guidelines ................................................................................................................................. 87
8.2.5 To flare the pipe end ...................................................................................................................................... 87
8.2.6 To braze the pipe end..................................................................................................................................... 88
8.2.7 Using the stop valve and service port............................................................................................................ 89
8.2.8 To connect the refrigerant piping to the outdoor unit ................................................................................. 90
8.2.9 To connect the refrigerant piping to the indoor unit .................................................................................... 91
8.3 Checking the refrigerant piping...................................................................................................................................... 91
8.3.1 About checking the refrigerant piping........................................................................................................... 91
8.3.2 Precautions when checking the refrigerant piping........................................................................................ 92
8.3.3 To check for leaks ........................................................................................................................................... 92
8.3.4 To perform vacuum drying............................................................................................................................. 92
8.3.5 To insulate the refrigerant piping .................................................................................................................. 93
8.4 Charging refrigerant........................................................................................................................................................ 94
8.4.1 About charging refrigerant............................................................................................................................. 94
8.4.2 Precautions when charging refrigerant ......................................................................................................... 95
8.4.3 To determine the additional refrigerant amount.......................................................................................... 95
8.4.4 To determine the complete recharge amount.............................................................................................. 95
8.4.5 To charge additional refrigerant .................................................................................................................... 95
8.4.6 To fix the fluorinated greenhouse gases label............................................................................................... 96
8.5 Preparing water piping ................................................................................................................................................... 96
8.5.1 Water circuit requirements............................................................................................................................ 96
8.5.2 Formula to calculate the expansion vessel pre-pressure.............................................................................. 99
8.5.3 To check the water volume and flow rate ..................................................................................................... 100
8.5.4 Changing the pre-pressure of the expansion vessel...................................................................................... 102
8.5.5 To check the water volume: Examples .......................................................................................................... 103
8.6 Connecting water piping................................................................................................................................................. 103
8.6.1 About connecting the water piping ............................................................................................................... 103
8.6.2 Precautions when connecting the water piping............................................................................................ 103
8.6.3 Connecting the water piping of the indoor unit............................................................................................ 104
8.6.4 Connecting the water piping of the gas boiler .............................................................................................. 105
8.6.5 To fill the space heating circuit ...................................................................................................................... 106
8.6.6 To fill the domestic water circuit of the gas boiler........................................................................................ 107
8.6.7 To fill the domestic hot water tank................................................................................................................ 107
8.6.8 To insulate the water piping .......................................................................................................................... 107
8.7 Connecting the gas piping .............................................................................................................................................. 108
8.7.1 To connect the gas pipe ................................................................................................................................. 108
8.7.2 To perform an air purge on the gas supply.................................................................................................... 108
9 Electrical installation 110

Table of contents
Installer reference guide
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EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
9.1 About connecting the electrical wiring .......................................................................................................................... 110
9.1.1 Precautions when connecting the electrical wiring....................................................................................... 111
9.1.2 Guidelines when connecting the electrical wiring......................................................................................... 111
9.1.3 Overview of electrical connections except external actuators ..................................................................... 113
9.1.4 Overview of electrical connections for external and internal actuators....................................................... 114
9.1.5 About preferential kWh rate power supply................................................................................................... 115
9.2 Connections to the outdoor unit.................................................................................................................................... 116
9.2.1 To connect the electrical wiring to the outdoor unit .................................................................................... 116
9.3 Connections to the indoor unit ...................................................................................................................................... 117
9.3.1 To connect the electrical wiring to the indoor unit....................................................................................... 117
9.3.2 To connect the main power supply of the indoor unit.................................................................................. 118
9.3.3 To connect the main power supply of the gas boiler .................................................................................... 120
9.3.4 To connect the communication cable between gas boiler and indoor unit ................................................. 120
9.3.5 To connect the user interface ........................................................................................................................ 122
9.3.6 To connect the shut-off valve ........................................................................................................................ 124
9.3.7 To connect the electrical meter..................................................................................................................... 125
9.3.8 To connect the gas meter .............................................................................................................................. 125
9.3.9 To connect the domestic hot water pump .................................................................................................... 125
9.3.10 To connect the alarm output ......................................................................................................................... 126
9.3.11 To connect the space cooling/heating ON/OFF output................................................................................. 126
9.3.12 To connect the power consumption digital inputs........................................................................................ 127
9.3.13 To connect the safety thermostat (normally closed contact) ....................................................................... 127
10 Configuration 129
10.1 Indoor unit ...................................................................................................................................................................... 129
10.1.1 Overview: Configuration ................................................................................................................................ 129
10.1.2 Basic configuration ......................................................................................................................................... 134
10.1.3 Advanced configuration/optimisation ........................................................................................................... 154
10.1.4 Menu structure: Overview user settings ....................................................................................................... 177
10.1.5 Menu structure: Overview installer settings ................................................................................................. 179
10.2 Gas boiler ........................................................................................................................................................................ 180
10.2.1 Overview: Configuration ................................................................................................................................ 180
10.2.2 Basic configuration ......................................................................................................................................... 180
11 Operation 190
11.1 Overview: Operation....................................................................................................................................................... 190
11.2 Heating ............................................................................................................................................................................ 190
11.3 Domestic hot water ........................................................................................................................................................ 190
11.3.1 Flow resistance graph for appliance domestic hot water circuit .................................................................. 191
11.4 Operation modes ............................................................................................................................................................ 191
12 Commissioning 194
12.1 Overview: Commissioning .............................................................................................................................................. 194
12.2 Precautions when commissioning.................................................................................................................................. 195
12.3 Checklist before commissioning..................................................................................................................................... 195
12.4 Checklist during commissioning ..................................................................................................................................... 196
12.4.1 To check the minimum flow rate ................................................................................................................... 197
12.4.2 Air purge function........................................................................................................................................... 197
12.4.3 To perform a test run ..................................................................................................................................... 199
12.4.4 To perform an actuator test run .................................................................................................................... 200
12.4.5 Underfloor heating screed dryout ................................................................................................................. 201
12.4.6 To perform a gas pressure test ...................................................................................................................... 204
12.4.7 To perform a test run on the gas boiler......................................................................................................... 204
13 Hand-over to the user 206
14 Maintenance and service 207
14.1 Maintenance safety precautions.................................................................................................................................... 207
14.1.1 Opening the indoor unit ................................................................................................................................. 207
14.2 Checklist for yearly maintenance of the outdoor unit................................................................................................... 207
14.3 Checklist for yearly maintenance of the indoor unit ..................................................................................................... 208
14.4 To disassemble the gas boiler......................................................................................................................................... 209
14.5 To clean the inside of the gas boiler............................................................................................................................... 212
14.6 To assemble the gas boiler ............................................................................................................................................. 213
15 Troubleshooting 215
15.1 Overview: Troubleshooting ............................................................................................................................................ 215
15.2 Precautions when troubleshooting ................................................................................................................................ 215
15.3 Solving problems based on symptoms........................................................................................................................... 216
15.3.1 Symptom: The unit is NOT heating or cooling as expected........................................................................... 216
15.3.2 Symptom: The compressor does NOT start (space heating or domestic water heating) ............................ 217

Table of contents
Installer reference guide
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EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
15.3.3 Symptom: The pump is making noise (cavitation)......................................................................................... 217
15.3.4 Symptom: The pressure relief valve opens.................................................................................................... 218
15.3.5 Symptom: The water pressure relief valve leaks ........................................................................................... 218
15.3.6 Symptom: The space is NOT sufficiently heated at low outdoor temperatures........................................... 218
15.3.7 Symptom: The pressure at the tapping point is temporarily unusually high................................................ 219
15.3.8 Symptom: Tank disinfection function is NOT completed correctly (AH-error)............................................. 219
15.3.9 Symptom: Boiler abnormality detection (HJ-11 error).................................................................................. 220
15.3.10 Symptom: Boiler/hydrobox combination abnormality (UA-52 error)........................................................... 220
15.3.11 Symptom: The burner does NOT ignite ......................................................................................................... 220
15.3.12 Symptom: The burner ignites noisily ............................................................................................................. 221
15.3.13 Symptom: The burner resonates ................................................................................................................... 221
15.3.14 Symptom: No space heating by the gas boiler .............................................................................................. 222
15.3.15 Symptom: The power is reduced ................................................................................................................... 222
15.3.16 Symptom: Space heating does NOT reach the temperature ........................................................................ 222
15.3.17 Symptom: Hot water does NOT reach the temperature (no tank installed) ................................................ 222
15.3.18 Symptom: Hot water does NOT reach the temperature (tank installed) ..................................................... 223
15.4 Solving problems based on error codes......................................................................................................................... 223
15.4.1 Error codes: Overview .................................................................................................................................... 223
16 Disposal 232
16.1 Overview: Disposal.......................................................................................................................................................... 232
16.2 To pump down................................................................................................................................................................ 232
16.3 To start and stop forced cooling..................................................................................................................................... 233
17 Technical data 234
17.1 Piping diagram: Outdoor unit......................................................................................................................................... 234
17.2 Piping diagram: Indoor unit............................................................................................................................................ 235
17.3 Wiring diagram: Outdoor unit ........................................................................................................................................ 236
17.4 Wiring diagram: Indoor unit ........................................................................................................................................... 237
17.5 Wiring diagram: Gas boiler ............................................................................................................................................. 243
17.6 ESP curve: Indoor unit..................................................................................................................................................... 244
17.7 Technical specifications: Gas boiler................................................................................................................................ 245
17.7.1 General ........................................................................................................................................................... 245
17.7.2 Energy-related products specifications ......................................................................................................... 247
17.7.3 Appliance category and supply pressure ....................................................................................................... 248
18 Glossary 252
19 Field settings table 253

1 | About the product
Installer reference guide
6
EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
1 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.
Approvals
British Gas Service listing:
EHYKOMB33AA*: G.C.N. 47-464-01
The product (hybrid system) is composed of two modules:
▪heat pump module,
▪gas boiler module.
These modules MUST always be installed and used together.
a b
aHeat pump module
bGas boiler module

1 | About the product
Installer reference guide
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EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
INFORMATION
This product is intended for domestic use only.

2 | About this document
Installer reference guide
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EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
2 About this document
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 indoor unit)
▪Heat pump module installation manual:
-Installation instructions
-Format: Paper (in the box of the indoor unit)
▪Gas boiler module installation manual:
-Installation and operation instructions
-Format: Paper (in the box of the gas boiler unit)
▪Outdoor unit installation manual:
-Installation instructions
-Format: Paper (in the box of the outdoor unit)
▪Installer reference guide:
-Preparation of the installation, reference data,…
-Format: Digital files on https://www.daikin.eu. Use the search function to
find your model.
▪Addendum book for optional equipment:
-Additional info about how to install optional equipment
-Format: Paper (in the box of the indoor unit) + Digital files on https://
www.daikin.eu. Use the search function to find your model.
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 Business Portal
(authentication required).
2.1 Meaning of warnings and symbols
DANGER
Indicates a situation that results in death or serious injury.

2 | About this document
Installer reference guide
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EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
DANGER: RISK OF BURNING/SCALDING
Indicates a situation that could result in burning/scalding 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.
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.
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:

2 | About this document
Installer reference guide
10
EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
Symbol Explanation
Indicates a figure title or a reference to it.
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".
2.2 Installer reference guide at a glance
Chapter Description
About the product Required combination of heat pump module
and gas boiler module
About the documentation What documentation exists for the installer
General safety precautions Safety instructions that you must read before
installing
Specific installer safety
instructions
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
Unit installation What to do and know to install the system,
including information on how to prepare for an
installation
Piping installation What to do and know to install the piping of the
system, including information on how to
prepare for an installation
Electrical installation What to do and know to install the electrical
components of the system, including
information on how to prepare for an
installation
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

2 | About this document
Installer reference guide
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EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
Chapter Description
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.

3 | General safety precautions
Installer reference guide
12
EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
3 General safety precautions
In this chapter
3.1 For the installer....................................................................................................................................................................... 12
3.1.1 General ................................................................................................................................................................... 12
3.1.2 Installation site ....................................................................................................................................................... 13
3.1.3 Refrigerant — in case of R410A or R32 ................................................................................................................. 14
3.1.4 Water...................................................................................................................................................................... 16
3.1.5 Electrical ................................................................................................................................................................. 16
3.1.6 Gas .......................................................................................................................................................................... 18
3.1.7 Gas exhaust ............................................................................................................................................................ 19
3.1.8 Local legislation ...................................................................................................................................................... 19
3.1 For the installer
3.1.1 General
DANGER: RISK OF BURNING/SCALDING
▪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.
WARNING
Make sure installation, testing and applied materials comply with applicable
legislation (on top of the instructions described in the Daikin documentation).
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
Wear adequate personal protective equipment (protective gloves, safety glasses,…)
when installing, maintaining or servicing the system.
CAUTION
Do NOT touch the air inlet or aluminium fins of the unit.

3 | General safety precautions
Installer reference guide
13
EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
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.
If you are NOT sure how to install or operate the unit, contact your dealer.
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).
3.1.2 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.
▪Store flammable fluids and materials at least 1meter away from the gas boiler.
▪This gas boiler is NOT designed for room air dependent operation.
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.

3 | General safety precautions
Installer reference guide
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EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
▪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.
▪In places where frost is possible. The ambient temperature around the indoor
unit should be >5°C.
3.1.3 Refrigerant — in case of R410A or R32
If applicable. See the installation manual or installer reference guide of your
application for more information.
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
During tests, NEVER pressurise 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 might be produced if refrigerant gas comes into contact with fire.
WARNING
ALWAYS recover the refrigerant. Do NOT release them directly into the environment.
Use a vacuum pump to evacuate the installation.
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.

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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.
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.
NOTICE
After all the piping has been connected, make sure there is no gas leak. Use nitrogen
to perform a gas leak detection.
▪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.

3 | General safety precautions
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Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
3.1.4 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 2020/2184.
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.
3.1.5 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 10minutes, 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.

3 | General safety precautions
Installer reference guide
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Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
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.
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.
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.
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.

3 | General safety precautions
Installer reference guide
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Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
Install power cables at least 1 meter away from televisions or radios to prevent
interference. Depending on the radio waves, a distance of 1 meter may NOT be
sufficient.
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.
3.1.6 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.

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Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
3.1.7 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.
3.1.8 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

3 | General safety precautions
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Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
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.