To Fill The Domestic Hot Water Tank; To Insulate The Water Piping; Connecting The Electrical Wiring; About Connecting The Electrical Wiring - Daikin Altherma EHVH04S18CB3V Installer's Reference Manual

2 Open the fill valve.
3 Make sure that the automatic air purge valve is open (at least 2
turns).
INFORMATION
For location of the air purge valve, see "Components:
Indoor unit" in chapter "14 Technical data" on
4 Fill the circuit with water until the manometer indicates a
pressure of ±2.0 bar.
5 Purge as much air as possible from the water circuit.
6 Close the fill valve.
7 Disconnect the water supply hose from the fill valve.
NOTICE
The water pressure indicated on the manometer will vary
depending on the water temperature (higher pressure at
higher water temperature).
However, at all times water pressure shall remain above
1 bar to avoid air entering the circuit.
7.8.7

To fill the domestic hot water tank

1 Open every hot water tap in turn to purge air from the system
pipe work.
2 Open the cold water supply valve.
3 Close all water taps after all air is purged.
4 Check for water leaks.
5 Manually operate the field-installed pressure relief valve to
ensure a free water flow through the discharge pipe.
7.8.8

To insulate the water piping

The piping in the complete water circuit MUST be insulated to
prevent condensation during cooling operation and reduction of the
heating and cooling capacity.
If the temperature is higher than 30°C and the humidity is higher
than RH 80%, the thickness of the insulation materials should be at
least 20 mm to prevent condensation on the surface of the
insulation.
7.9

Connecting the electrical wiring

7.9.1

About connecting the electrical wiring

Before connecting the electrical wiring
Make sure:
▪ The refrigerant piping is connected and checked
▪ The water piping is connected
ERLQ004~008CA + EHVH/X04+08S18+26CB
Daikin Altherma – Low temperature split
4P384973-1A – 2016.02
Typical workflow
Connecting the electrical wiring typically consists of the following
stages:
1 Making sure the power supply system complies with the
electrical specifications of the heat pump.
2 Connecting the electrical wiring to the outdoor unit.
page 84.
3 Connecting the electrical wiring to the indoor unit.
4 Connecting the main power supply.
5 Connecting the backup heater power supply.
6 Connecting the user interface.
7 Connecting the shut–off valves.
8 Connecting the electrical meters.
9 Connecting the domestic hot water pump.
10 Connecting the alarm output.
11 Connecting the space cooling/heating ON/OFF output.
12 Connecting the changeover to an external heat source.
13 Connecting the power consumption digital inputs.
7.9.2
Only for indoor units
See "7.9.8 To connect the backup heater power supply" on
page 42.
7.9.3
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
DANGER: RISK OF ELECTROCUTION
INFORMATION
More information about the legend and the location of the
wiring diagram of the unit can be found in the "Technical
data" chapter.
WARNING
ALWAYS use multicore cable for power supply cables.
7.9.4
Keep the following in mind:
▪ If stranded conductor wires are being used, install a round crimp-
style terminal on the tip. Place the round crimp-style terminal on
the wire up to the covered part and fasten the terminal with the
appropriate tool.
b
▪ Use the following methods for installing wires:

About electrical compliance

Precautions when connecting the
electrical wiring
Guidelines when connecting the electrical
wiring
a
a Stranded conductor wire
b Round crimp-style terminal
7 Installation
Installer reference guide
39