To Fill The Domestic Hot Water Tank; To Insulate The Water Piping; Connecting The Electrical Wiring; About Connecting The Electrical Wiring - Daikin EBLQ05+07CAV3 Installer's Reference Manual

5 Purge as much air as possible from the water circuit.
INFORMATION
▪ To purge air, use all air purge valves present in the
system. This includes the manual air purge valve of the
outdoor unit, as well as any field-supplied valves.
▪ For the location of the manual air purge valve, see
"Components: Outdoor unit" in chapter
data" on page 86.
▪ If the system contains a backup heater, also use the air
purge valve of the backup heater. For the location of
this valve, see "Components: Backup heater" in
chapter "14 Technical data" on
▪ For instructions on how to perform an air purge, see To
perform an air purge.
NOTICE
When purging air with the manual air purge valve of the
unit, collect any fluid that might leak out of the valve. If this
fluid is NOT collected, it might drip on internal components
and damage the unit.
6 Refill the circuit until the pressure is ±2.0 bar.
7 Repeat steps 5 and 6 until no more air is purged and there are
no more pressure drops.
8 Close the drain and fill valve.
9 Disconnect the water supply hose from the drain and 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.
7.7.7

To fill the domestic hot water tank

For installation instructions, see the installation manual of the
domestic hot water tank.
7.7.8

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.
To prevent the freezing of the outdoor water piping during winter
time, the thickness of the sealing material MUST be at least 13 mm
(with λ=0.039 W/mK).
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.
During winter, protect the water piping and shut‑off valves against
freezing by adding heat tape (field supply). If the outdoor
temperature can drop below –20°C and no heat tape is used, it is
recommended to install the shut‑off valves indoors.
7.8

Connecting the electrical wiring

7.8.1

About connecting the electrical wiring

Before connecting the electrical wiring
Make sure the water piping is connected.

EBLQ05+07CAV3 + EDLQ05+07CAV3 + EKCB07CAV3 +

EK2CB07CAV3 + EKMBUHCA3V3 + EKMBUHCA9W1

Daikin Altherma low temperature monobloc
4P405544-1 – 2015.03
"14 Technical
page 86.
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 units.
2 Connecting the electrical wiring to the outdoor unit (if
applicable).
3 Connecting the electrical wiring to control box EKCB07CAV3 (if
applicable).
4 Connecting the electrical wiring to option box EK2CB07CAV3 (if
applicable).
5 Connecting the electrical wiring to the backup heater (if
applicable).
6 Connecting the main power supply
7 Connecting the backup heater power supply (if applicable).
8 Connecting the user interface.
9 Connecting the shut–off valves (if applicable).
10 Connecting the electrical meters (if applicable).
11 Connecting the domestic hot water pump (if applicable).
12 Connecting the alarm output (if applicable).
13 Connecting the space cooling/heating ON/OFF output (if
applicable).
14 Connecting the changeover to an external heat source (if
applicable).
15 Connecting the power consumption digital inputs (if applicable).
7.8.2

About electrical compliance

Only for EBLQ07CAV3+EDLQ07CAV3
Equipment complying with
International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage
systems with input current >16 A and ≤75 A per phase.).
7.8.3 Precautions when connecting the
electrical wiring
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
diagram" on page 98.
WARNING
ALWAYS use multicore cable for power supply cables.
7.8.4 Guidelines when connecting the electrical
wiring
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.
7 Installation
EN/IEC 61000‑3‑12 (European/
"14.6 Wiring
Installer reference guide
39