Daikin Altherma 3 R F EHVZ04S18E 6V Series - 9 Electrical Installation; About Connecting the Electrical Wiring

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9 | Electrical installation

Installer reference guide

ERGA04~08EAV3(A) + EHVZ04+08S18+23EA6V+9W

Daikin Altherma 3 R F

4P629093-1 – 2020.08

9 Electrical installation

WARNING

Make sure that the electrical wiring does NOT touch the refrigerant gas pipe, which

can be very hot.

a Refrigerant gas pipe

In this chapter

9.1 About connecting the electrical wiring .................................................................................................................................. 88

9.1.1 Precautions when connecting the electrical wiring .............................................................................................. 89

9.1.2 Guidelines when connecting the electrical wiring ................................................................................................ 90

9.1.3 Specifications of standard wiring components ..................................................................................................... 91

9.1.4 About electrical compliance .................................................................................................................................. 91

9.1.5 About preferential kWh rate power supply........................................................................................................... 92

9.1.6 Overview of electrical connections except external actuators............................................................................. 92

9.2 Connections to the outdoor unit............................................................................................................................................ 93

9.2.1 To connect the electrical wiring to the outdoor unit ............................................................................................ 93

9.3 Connections to the indoor unit .............................................................................................................................................. 95

9.3.1 To connect the main power supply ....................................................................................................................... 98

9.3.2 To connect the backup heater power supply........................................................................................................ 100

9.3.3 To connect the shut-off valve ................................................................................................................................ 102

9.3.4 To connect the electricity meters.......................................................................................................................... 103

9.3.5 To connect the domestic hot water pump............................................................................................................ 104

9.3.6 To connect the alarm output................................................................................................................................. 105

9.3.7 To connect the changeover to external heat source ............................................................................................ 106

9.3.8 To connect the power consumption digital inputs ............................................................................................... 107

9.3.9 To connect the safety thermostat (normally closed contact)............................................................................... 108

9.3.10 To connect a Smart Grid ........................................................................................................................................ 110

9.3.11 To connect the WLAN cartridge (delivered as accessory)..................................................................................... 114

9.4 After connecting the electrical wiring to the indoor unit...................................................................................................... 114

9.1 About connecting the electrical wiring

Before connecting the electrical wiring

Make sure:

▪ The refrigerant piping is connected and checked

▪ The water piping is connected