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
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