Name: Daikin Altherma 3 H MT W
Brand: Daikin
Rating: 4 (1 reviews)

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9 | Electrical installation

Installer reference guide

101

EPRA08~12EAV3+W1 + ETVH12SU18+23EA6V

Daikin Altherma 3 H MT F

4P644482-1 – 2021.03

9 Electrical installation

INFORMATION

This unit is a heating only model. Therefore, all references to cooling in this

document are NOT applicable.

In this chapter

9.1 About connecting the electrical wiring .................................................................................................................................. 101

9.1.1 Precautions when connecting the electrical wiring .............................................................................................. 101

9.1.2 Guidelines when connecting the electrical wiring ................................................................................................ 102

9.1.3 About electrical compliance .................................................................................................................................. 104

9.1.4 Specifications of standard wiring components ..................................................................................................... 104

9.1.5 About preferential kWh rate power supply........................................................................................................... 104

9.1.6 Overview of electrical connections except external actuators............................................................................. 105

9.2 Connections to the outdoor unit............................................................................................................................................ 105

9.2.1 To connect the electrical wiring to the outdoor unit ............................................................................................ 106

9.2.2 To reposition the air thermistor on the outdoor unit ........................................................................................... 112

9.3 Connections to the indoor unit .............................................................................................................................................. 113

9.3.1 To connect the main power supply ....................................................................................................................... 116

9.3.2 To connect the backup heater power supply........................................................................................................ 118

9.3.3 To connect the shut-off valve ................................................................................................................................ 121

9.3.4 To connect the electricity meters.......................................................................................................................... 122

9.3.5 To connect the domestic hot water pump............................................................................................................ 123

9.3.6 To connect the alarm output................................................................................................................................. 124

9.3.7 To connect the space cooling/heating ON/OFF output ........................................................................................ 125

9.3.8 To connect the changeover to external heat source ............................................................................................ 126

9.3.9 To connect the power consumption digital inputs ............................................................................................... 127

9.3.10 To connect the safety thermostat (normally closed contact)............................................................................... 128

9.3.11 To connect a Smart Grid ........................................................................................................................................ 129

9.3.12 To connect the WLAN cartridge (delivered as accessory)..................................................................................... 133

9.4 After connecting the electrical wiring to the indoor unit...................................................................................................... 133

9.1 About connecting the electrical wiring

Before connecting the electrical wiring

Make sure the water piping is connected.

Typical workflow

Connecting the electrical wiring typically consists of the following stages:

▪ "9.2Connections to the outdoor unit"[4105]

▪ "9.3Connections to the indoor unit"[4113]

9.1.1 Precautions when connecting the electrical wiring

DANGER: RISK OF ELECTROCUTION

WARNING

ALWAYS use multicore cable for power supply cables.